JPH0650615Y2 - Lever handle lock - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever handle lock in which a handle shaft of a lever handle is fitted into a hub hole of a latch hub and a handle shaft mounting hole of a lever handle to fix the lever handle to an end of the handle shaft. It is a thing.

[0002]

2. Description of the Related Art A conventional lever handle lock of this type has a handle shaft composed of a first member and a second member, as shown in Japanese Utility Model Publication No. 62-24687, so that both members face each other. While pushing a wedge such as a screw that is screwed into the lever handle part into the gap formed in the part, expand both of the above members to the inner wall surface of the hub hole of the latch hub and the inner wall surface of the handle mounting hole of the lever handle, and press and fix them. ing.

According to such a crimping and fixing method, only the both ends of the first member and the second member are expanded, so that both members with respect to the inner wall of the hub hole are expanded by expanding the central portion penetrating the hub hole. The crimping force of is extremely weak.

Therefore, there is a problem that rattling occurs at the fitting portion between the hub hole and the square shaft, and the initial rotation of the lever handle is not smoothly transmitted to the latch hub.

There is also a problem that the lever handle may fall off from the square shaft if the screw is loosened even a little.

Particularly, when the handle shaft is composed of the first member and the second member, when the sides of the first member and the second member are not aligned, the handle shaft is fitted in the hub hole of the latch hub incorporated in the lock box. When inserting, there was a problem that the protruding side was caught due to the step difference of the sides and it could not be inserted smoothly.

Therefore, an object of the present invention is to allow the handle shaft to be smoothly inserted into the hub hole of the latch hub and to crimp and fix the square shaft not only to the inner wall surface of the handle mounting hole of the lever handle but also to the inner wall surface of the hub hole of the latch hub. It is possible to provide a lever handle lock capable of preventing the screw from loosening.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention inserts the handle shaft of a lever handle into a hub hole of a latch hub and a handle shaft mounting hole of a lever handle, and In a lever handle lock in which the lever handle is fixed to an end portion, the handle shaft is composed of a first member and a second member each having a rectangular cross section in the axial cross section and having opposing surfaces overlapped with each other. Two
A protrusion and a recess are provided which are fitted to one side edge of the overlapping surface with the member, and the width of the opening at the other side edge of the overlapping surface of the first member and the second member is smaller than the internal width, Further, a V-shaped concave groove is provided at the bottom, and the opening edge of the concave groove is cut by a tapping screw screwed from the outside of the lever handle, and a pressing force at the tip of the tapping screw is applied to the bottom of the concave groove. The first member and the second member are crimped and fixed to the hub hole and the mounting hole.

[0009]

The lever shaft is inserted into the hub hole of the latch hub, and the lever handle is attached to the outside of the other end of the handle shaft.

Then, while screwing the tapping screw, the side edge of the opening of the concave groove is cut by the tapping screw, and the tip of the tapping screw is pressed to the lowest position of the bottom surface of the concave groove to form the handle shaft and the first member. Second
Since the member is expanded, the outer peripheral surfaces of the first member and the second member are crimped to the hub hole and the mounting hole.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2, 1 is a lock case, 2
Is a front plate, 3 is an indoor lever handle, 4 is an outdoor lever handle, and the base ends of the handles 3 and 4 have mounting holes 6 into which both ends of a square handle shaft 5 are inserted.
Is provided.

Reference numeral 7 is a latch bolt. The latch bolt 7 is connected to the latch bolt shaft 8 in the lock case 1, and the elastic force of the spring 9 constantly biases the latch bolt 7 in the protruding direction. There is.

Reference numeral 10 denotes a latch hub which is positioned below the latch bolt shaft 8 and is rotatably installed in the lock case 1. A fork 11 protruding from a part of the outer periphery of the latch hub 10 is engaged with the latch bolt shaft 8. The latch hub 10 is rotated through the rotating operation of the handle shaft 5 which is inserted into the hub hole 12 of the latch hub 10, and this rotational movement is converted into a reciprocating linear movement of the latch bolt shaft 8 to move the latch bolt 7 Infest.

The mounting holes 6 and the hub hole 12 of the lever handles 3 and 4 have the same diameter.

As shown in FIG. 3 and FIG. 7, the handle shaft 5 is composed of a first member 5'and a second member 5 "whose axial cross-sections are quadrangular with opposing surfaces overlapped with each other. A protrusion 13 and a recess 14 to be fitted are provided on one side edge of the overlapping surface of the member 5 ′ and the second member 5 ″.

Although the projections 13 and the recesses 14 are provided with protrusions and grooves along the entire length in the longitudinal direction of the first member 5'and the second member 5 "in the figure, they may be provided in a scattered manner. .

Further, on the other side edge of the overlapping surface of the first member 5'and the second member 5 ", the width of the opening is smaller than the inner width and the bottom is V-shaped. Is provided.

With the above arrangement, the latch hub 10
The outer side lever handle 4 at one end in the hub hole 12 of
After passing through the handle shaft 5 to which is attached, as shown in FIG. 5, the mounting hole 6 of the indoor lever handle 3 is fitted to the outside of the other end of the handle shaft 5.

Next, when the tapping screw 17 screwed into the screw hole 16 of the indoor lever handle 3 is screwed in, the tapping screw 17 cuts both side edges of the opening of the groove 15, and the bottom of the groove 15 is cut. Lowest point (1st
When the tip of the tapping screw 17 comes into contact with the overlapping surface of the member 5'and the second member 5 ", the first member 5'and the second member 5 constituting the handle shaft 5 as shown in FIGS. 6 and 8. ", So that the first member 5'is attached to the mounting hole 6 and the hub hole 12.
The second member 5 ″ is pressed to stop rattling of the latch hub 10 and the lever handle 3 with respect to the handle shaft 5, and the lever handle 3 is fixed to the handle shaft 5.

The outdoor lever handle 4 is attached to the handle shaft 5 by using a tapping pin instead of using the tapping screw as in the case of the indoor lever handle 3.

Further, as shown in FIGS. 7 and 8, the tip of the tapping screw 17 is used to widen the overlapping surface of the first member 5'and the second member 5 ". As described above, when the groove line 18 is provided from the bottom surface of the concave groove 15 toward the overlapping surface of the first member 5 ′ and the second member 5 ″, the tip of the tapping screw 17 is fitted into the groove line 18 before cutting. Then, the first member 5'and the second member 5 "are pushed apart from each other.

[0023]

As described above, according to the lever handle lock of the present invention, the first member and the second member are pushed apart by the tapping screw that cuts the both side edges of the opening of the concave groove, and the latch hub and the mounting hole for the handle shaft are formed. Since the rattling is stopped, even if the tapping screw is loosened, it is possible to prevent the lever handle from coming off the handle shaft due to the notch of the opening edge of the concave groove.

Further, since the projection and the recess provided on the overlapping surface of the first member and the second member are fitted together,
The movement of both members in the circumferential direction stops. Therefore, when the handle shaft is inserted into the hub hole, it is possible to eliminate the inconvenience that the protruding side is caught due to the step difference of the sides.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a lever handle lock according to the present invention.

FIG. 2 is a transverse plan view of the same as above.

FIG. 3 is an exploded perspective view of a handle shaft

FIG. 4 is a sectional view taken along the line XX in FIG.

FIG. 5 is a vertical sectional front view in which a mounting hole is fitted in a handle shaft.

FIG. 6 is a sectional view taken along the line Y-Y in FIG.

FIG. 7 is an exploded perspective view of another embodiment of the handle shaft.

FIG. 8 is a vertical sectional front view showing the attachment of the above handle.

[Explanation of symbols]

 1 lock case 2 front plate 3, 4 lever handle 5 handle shaft 5'first member 5 '' second member 6 mounting hole 7 latch bolt 8 latch bolt shaft 9 spring 10 latch hub 11 bifurcated piece 12 hub hole 13 protrusion 14 recess 15 Groove 16 Screw hole 17 Tapping screw

Claims (1)

[Scope of utility model registration request] 1. A lever handle lock in which a handle shaft of a lever handle is fitted and inserted into a hub hole of a latch hub and a handle shaft mounting hole of a lever handle, and the lever handle is fixed to an end portion of the handle shaft. The shaft is composed of a first member and a second member each having a quadrangular cross-section of the shaft in which opposed surfaces are overlapped with each other, and a projection and a recess fitted to one side edge of the overlapping surface of the first member and the second member. Is provided, the width of the opening is smaller than the inner width at the other side edge of the overlapping surface of the first member and the second member, and the bottom has a V-shaped concave groove. The opening edge of the groove is cut by a tapping screw that is screwed in from the outside, and the pressing force at the tip of the tapping screw is applied to the bottom of the groove so that the hub hole and the mounting hole have the first member and the second member. The pressure A lever handle lock characterized by being fixed and fixed.