JPH0525959A - Handle fixing method - Google Patents

Abstract

PURPOSE:To keep the locked condition between a whirl-stop shaft and a handle shaft securely and present the slip out of the handle shaft even if the push screw comes off, in a handle shaft fixing method for setting the end of the whirl-stop shaft set in the hub shaft of a latch hub in the hole of the handle shaft, and fixing it with a screw. CONSTITUTION:A plastically deformed member 5 is laid on one side face at the end of a whirl-stop shaft 4, and this is set in the hole 13 of a handle shaft 12, and a push screw 11 is screwed in the screw hole 14 of the handle shaft 12, and the top 11a is pushed in the plastically deformed member 5. Hereby, the section jutting out upward of the plastically deformed member 5 is pushed in the screw hole 14, and the handle shaft 12 and the whirl-stop shaft 4 are fixed, and even if the push screw 11 slips out of the hole 14, the handle shaft 14 does not come out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock case mounted for locking and unlocking a door, in which a hub hole of a latch hub installed inside the lock case is provided with a rotation stopper such as a square bar or an elliptic rod. The present invention relates to a handle fixing method in which a shaft is fitted, a handle shaft having a lever or a knob is fitted to one end or both ends of the detent shaft, and the handle shaft is fixed to the detent shaft by screwing.

[0002]

2. Description of the Related Art Conventionally, as a handle fixing method as described above, firstly, in the case of a double handle type, a lock hub has an internal latch hub, and a central portion of a detent shaft is fitted into the hub hole. Then, insert the holes of the handle shaft at both ends,
It is known that the detent shaft and the handle shaft are fixed by tightening a mounting screw.

Further, as a second conventional example, a leaf spring is mounted in a hub hole of a latch hub and a detent shaft is fitted through the leaf spring, and as a third conventional example. The anti-rotation shaft is composed of two long and slender members, and both members are aligned and fitted into the hub hole and the hole of the handle shaft. In this state, the handle shaft is inserted into the gap formed between the facing portions of both members. It is also known that a wedge body is screwed in from the outside by pushing it in, and thereby both members are pressed against and fixed to the inner wall surfaces of the hub hole of the latch hub and the hole of the handle shaft. is there.

As the fourth conventional example, the rotation preventing shaft is 2
As a divided structure, the divided surfaces are formed as convex curved surfaces that can contact each other, and the two divided members can be pressed against the inner wall surface of the hub hole and the hole of the handle shaft by screws,
There is also one in which one of them is pressed, and in addition to this, various structures are proposed.

[0005]

However, in the case of the above-mentioned first conventional example, the screws are easily loosened due to vibration or the like, so that the handle shaft loosens during repeated use, and finally the peeling occurs. This causes rattling and the handle shaft will slip out of the rotation stop shaft.

In the case of the second conventional example, the detent shaft can prevent rattling of the hub hole of the latch hub, but rattles the hole of the handle shaft for mounting the detent shaft. Since the sticking cannot be prevented, the handle shaft is loosened by repeated use and the handle shaft hangs down. Further, the leaf spring may come off when the detent shaft is inserted, and further, the leaf spring and the hub hole have to be subjected to various processes, which is expensive.

Also in the third conventional example, if the wedge body inserted and pushed into the longitudinal gap between both members is loosened even after repeated use, The crimping force against the inner wall surface of the bubb hole of both members and the hole of the handle shaft is reduced, and the handle shaft is slipped out in the axial direction.

In the case of the above-mentioned fourth conventional example, the tip of the screw pushes one of the members having the two-divided structure.
The above-mentioned screw is easy to loosen. Therefore, in this case as well, the handle shaft is loosened by repeated use, rattling occurs, and the handle shaft is pulled out. In addition, since the detent shaft has a two-divided structure or the divided surface is a convex curved surface portion, the cost becomes higher.

The present invention has been made in view of the above-mentioned problems of the above-mentioned prior art, and the detent shaft and the handle shaft can be easily fixed by a simple operation of screwing a push screw. The purpose is to prevent the handle shaft from unintentionally coming out even if the push screw becomes loose or comes out.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention interposes a plastically deformable member made of a light alloy or the like on one side of an end portion of a detent shaft fitted in a hub hole of a latch hub. Then, the hole of the handle shaft is fitted, and a push screw is screwed in from the outside of the handle shaft, and this is pushed into the plastically deformable member. A part of the plastically deformed member deformed by this is a screw hole of the handle shaft. An attempt is made to provide a handle fixing method characterized in that the handle is fixed by being pushed in.

[0011]

[Function] The detent shaft is fitted into the hub hole of the latch hub, and the end thereof is projected outward from the hub hole. A plastically deformable member made of a light alloy or the like is fixedly interposed on one side surface of the detent shaft near the end. As a means for fixing the plastically deformable member, a concave groove portion is provided on one side surface of the detent shaft so that the plastically deformable member is fitted therein to prevent movement in the axial direction.

While the plastically deformable member is fixed to one side surface as described above, it is fitted into the hole of the handle shaft at the end portion of the detent shaft and pushed into the screw hole formed in the peripheral wall of the handle shaft. When the screw is screwed in from the outside, the tip of the push screw abuts on the upper surface of the substantially central portion of the plastically deformable member. When the push screw is further screwed in, the push screw is pushed into the plastically deformable member by the screwing force, and the plastically deformable member having substantially the same volume as the pushed in volume protrudes around the push screw. , To the inside of the screw hole of the handle shaft.

Here, the shape of the tip of the push screw is such that it can be easily pushed into the plastically deformable member, and that it has a gap between the inner peripheral wall surface of the screw hole penetrating the handle shaft and the outer peripheral side thereof. It is formed in advance so that the protruding portion of the plastically deformable member can enter the location.

Therefore, not only when the push screw is screwed and tightened, but even when the push screw is loosened or comes out from the screw hole, the protruding portion of the plastically deformable member is in the screw hole, By being locked in the screw hole in the axial direction, even if an axial pulling force is applied to the handle shaft, the handle shaft is prevented from coming off.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described below with reference to FIGS. In FIG. 1, 1 is a lock case, 2 is a latch hub, and 3 is a hub hole into which the central portion or the end portion of a rotation stopping shaft 4 formed by a square shaft or the like is fitted. On one side surface 4b of the end portion 4a of the anti-rotation shaft 4 protruding outward from the hub hole 3, a recessed groove portion 6 for fitting and fixing the plastic deformation member 5 is cut. As shown in FIGS. 5A, 7A, and 9, the concave groove portion 6 is formed as a groove groove that is long in the axial direction and narrow in the central portion of the one side surface 4b. Alternatively, as shown in FIG. 6, the side surface 4b may be formed so as to be as wide as possible.

In addition, the bottom surface 6a of the recessed groove portion 6 is formed in the embodiment shown in FIGS. 1 to 4 and 5B and 6B, or 7B, and FIG. By forming a concave curved surface in an arc shape, slopes 7 and 7 that are curved and rise from the central portion to the end portion are symmetrically provided at both front and rear ends in the axial direction. The plastically deformable member 5 fitted in the groove portion 6 is the end portion 4 of the detent shaft 4.
It is formed in order to prevent the plastic deformation member 5 from being disengaged in the a direction and to be lifted upward in the drawing by moving the plastic deformation member 5 in the direction of the end 4a. Alternatively, as shown in FIGS. 10A to 10D, the strobe 7 may be formed only on the front end side, and the rear end may be simply formed on the vertical surface 8.

The strobe 7 in this case is shown in FIG.
The curved surface shown in (A) of FIG.
(D), it can be formed on an inclined surface, and further, as shown in FIGS. 7 to 9, the concave groove portion 6 is at the center of the bottom portion in the width direction, and the slit 9 is cut in the length direction. Alternatively, the plastically deformable member 5 may be pushed into the slit 9 as described later.

The plastically deformable member 5 includes the detent shaft 4
The upper surface 5a is formed so as to be flush with the upper surface 4b of the rotation stopping shaft 4 in a state where it can be fitted into the concave groove portion 6 and is fitted, but at least at the tip end side of the bottom surface thereof. A slope 10 corresponding to the slope 7 of the groove 6 is formed. Further, in the illustrated example, the plastic deformation member 5 is not formed into a solid line shape that fits the concave groove portion 6, but the rear end portion is cut off as shown by the chain double-dashed line in FIG. It can also be shaped.

As the plastically deformable member 5, a light alloy such as aluminum, copper, zinc, tin or the like, which can be plastically deformed relatively easily by screwing the illustrated push screw 11, is adopted. You can

With the plastic deformation member 5 fitted in the groove 6, the end portion 4a of the detent shaft 4 is fitted into the hole 13 of the handle shaft 12 as shown in FIG. In the screw hole 14 penetrating the peripheral wall of the handle shaft 12, the push screw 11
By screwing in as shown in FIG. 1B, the tip end portion 11a of the push screw 11 is formed so that the tip end portion 11a can be pushed into the plastic deformation member 5.

The screw hole 14 is formed in the peripheral wall of the handle shaft 12 so as to face the substantially central portion of the upper surface 5a of the plastically deformable member 5. On the other hand, the tip portion 11a of the push screw 11 is integrally projected from the center of the lower end of the male screw portion 11b in FIGS. 1 (A) and 1 (B), and the diameter thereof is a required dimension larger than that of the male screw portion 11b. It is formed in the shape of a rod with a small diameter so that the push screw 11 can be screwed into the screw hole 1
As shown in FIG. 1B, an annular gap 15 is formed between the tip portion 11a and the lower inner wall surface of the screw hole 14 by screwing into the screw hole 4.

With respect to the tip portion 11a of the push screw 11,
In the embodiment shown in FIG. 2, the male screw portion 11b is integrally projected from the center of the lower end so as to form an inverted conical shape, whereby an annular void portion 15 having a substantially inverted V-shaped cross section is formed on the outer peripheral side of the base portion. Are formed.

Further, the tip portion 11a of FIG. 3 is formed in the shape of a rod having a small diameter, and the male screw portion 1
A tapered portion 11c is formed on the lower end side of 1b so that an annular void portion 15 having a cross section of a substantially right triangle is formed between the tapered portion 11c and the inner wall surface of the screw hole 14. There is.

Further, in FIG. 4, it is formed in the shape of an inverted truncated cone, whereby an annular void portion having a substantially right-angled cross section is formed between the tip portion 11a and the inner wall surface of the screw hole 14. 15 is formed.

Therefore, as for the shape of the tip portion 11a, when the push screw 11 is screwed into the screw hole 14, the tip portion 11a is pushed into the upper surface 5a of the plastically deformable member 5, whereby the plastically deformable member 5 in each of the drawings. Any form may be adopted as long as it protrudes upward and is pushed into the inside of the screw hole 14.

Next, the handle fixing method of the present invention will be described in the order of steps. As shown in FIG. 1A, the end portion 4 a of the detent shaft 4 is fitted into the hole 13 of the handle shaft 12 with the plastic deformation member 5 fitted in the groove 6. Next, when the push screw 11 is screwed into the screw hole 14 of the handle shaft 12, the tip portion 11 a of the push screw 11 is inserted into the upper surface 5 a of the plastic deformation member 5.
However, when the push screw 11 is further screwed in, the tip portion 11a is plastically deformed by the screwing force as shown in FIG. 1 (B) and FIG. 2, and FIG. 3, FIG. 4, and FIG. It is pushed into the upper surface 5a of the member 5 and goes.

The tip portion 11a of the push screw is the plastic deformation member 5
When pushed in, the plastic deformation member 5 corresponding to the pushed-in volume protrudes upward, and this
It goes into the space 15 between the tip 11a of the push screw and the inner wall surface of the screw hole 14. That is, since the protruding plastic deformation member 5 is pushed and locked at the lower end of the screw hole 14, when the push screw 11 is completely screwed in, the tip end 11a and the plastic deformation member 5 are pushed in. The locking shaft 4 and the handle shaft 12 are fixed to each other in the axial direction by the locking by the above and the plastic deformation member 5b locked by being pushed into the screw hole 14.

Further, even when the tightening of the push screw 11 is loosened by repeated use, the screw hole 14 and
By the plastically deformable member 5b which is press-fitted and locked to this,
The detent shaft 4 and the handle shaft 12 are held in a fixed state.

Further, when the pull-out force in the axial direction is applied to the plastically deformable member 5 together with the handle shaft 12 in the state where the above-mentioned lock shaft 4 and the handle shaft 12 are fixed, the concave groove portion 6 of the lock shaft 4 is provided. The plastic deformation member 5 rises upward due to the slope 7 on the tip side of the upper surface 5a.
Is crimped to the inner wall surface of the hole 13 of the handle shaft 12,
Since the plastically deformable member 5b is further pushed into the screw hole 14, the handle shaft 1 does not rotate with respect to the detent shaft 4.
The withdrawal of 2 will be blocked.

When the slit 9 is provided at the bottom of the groove 6, the bottom of the plastically deformable member 5 is pushed into the slit 9 as shown in FIG. 9 by being pushed by the push screw 11. It means that the detent shaft 4
The handle shaft 12 is more firmly fixed.

[0031]

Since the present invention is carried out as described above, a push screw is screwed into a screw hole of a handle shaft so that its tip end is fixed to one side surface of the rotation preventing shaft. The plastic deformable member protrudes by being pushed into the plastic deformable member, which is pushed and locked in the screw hole of the handle shaft, and the detent shaft and the handle shaft are fixed by simply screwing the push screw. It can be made robust and easy. Further, since the protruding portion of the plastically deformable member is press-fitted and locked in the screw hole of the handle shaft, it is possible to prevent the handle shaft from slipping out even if the push screw is loosened or comes out.

[Brief description of drawings]

1 (A) and 1 (B) are vertical cross-sectional views showing a state in which an end of a rotation stopper shaft is fitted in a hole of a handle shaft, and a rotation stopper shaft and a handle shaft are fastened and fixed by a push screw. It is a longitudinal cross-sectional view of a state.

FIG. 2 is a vertical cross-sectional view showing a fixed state of a detent shaft and a handle shaft according to another embodiment of a push screw.

FIG. 3 is a vertical cross-sectional view showing a fixed state of a detent shaft and a handle shaft according to another embodiment of a push screw.

FIG. 4 is a cross-sectional view showing a fixed state of a detent shaft and a handle shaft according to another embodiment of a push screw.

5A and 5B are a plan view and a side view, respectively, showing a recessed groove portion at an end portion of a detent shaft.

6A and 6B are a plan view and a side view, respectively, showing another embodiment of the recessed groove portion at the end of the detent shaft.

7A and 7B are a plan view and a side view, respectively, showing another embodiment of the concave groove portion at the end portion of the rotation preventing shaft.

FIG. 8 is a vertical cross-sectional view showing a fixed state of the rotation preventing shaft and the handle shaft by the groove portion shown in FIGS. 7 (A) and 7 (B).

9 is a sectional view taken along the line AA in FIG.

10 (A), (B), (C), and (D) are vertical cross-sectional views showing different embodiments of the concave groove portion at the end of the detent shaft.

[Explanation of symbols]

 2 Latch hub 3 Hub hole 4 Non-rotating shaft 5 Plastic deformation member 11 Push screw 11a Tip part 12 Handle shaft 13 hole

Claims (1)

Claim: What is claimed is: 1. A hole for a handle shaft is fitted to an end portion of a detent shaft fitted into a hub hole of a latch hub with a plastically deformable member made of a light alloy or the like interposed on one side thereof. , A push screw is screwed in from the outside of the handle shaft, the push screw is pushed into the plastic deformation member, and a part of the plastic deformation member deformed by this is pushed into the screw hole of the handle shaft to be locked. A handle fixing method characterized in that