JPH0571254A - Handle fixing device - Google Patents

Abstract

PURPOSE:To prevent a screw from loosening and a handle axis from rattling or slipping out, even if loosened, for a long time, regarding a handle fixing device to fix the handle axis which is attached at the end of a rotary stopper shaft fitted in the hub hole of the case attached to a door. CONSTITUTION:A recessed groove 6 having a long arc bottom face 6a at one 4b of a rotary stopper shaft sides, in the axial direction, is formed at the rotary stopper shaft 4 fitted to the hub hole 3. An arc recessed face 7b is provided on the recessed groove 6 in the axial direction. A hold piece 7 made of a plastically deforming light metal having a notch 7c at the nearly middle part is fitted. The neck 4a of the rotary stopper shaft 4 is fitted to the hole 9 of the handle axis 8. The upper face 7a of the holding piece 7 is pressed by a set screw 11 screwed in the handle axis 8 to deform to be of a V-shape from the position of the recessed notch 7c. The middle of arc bottom face 6a and both ends thereof 7d, 7e are pressed respectively on the inner wall face 9a in the hole of the rotary stopper shaft 4 and the handle axis 8 to fix these parts.

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 rotation stop shaft such as a square shaft is fitted in a hub hole of a latch hub installed in the lock case. The present invention relates to a handle fixing device in which a handle shaft having a lever, a knob, and the like is fitted on the detent shaft, and the handle shaft is fixed to the detent shaft by screwing.

[0002]

2. Description of the Related Art As a conventional handle fixing device in the case of both handle types, a lock hub has an internal latch hub, and a central portion of a rotation stopping shaft such as an elliptic shaft of a square shaft is fitted into a hub hole of the lock hub. Insert the handle shaft holes at both ends,
It is known that the detent shaft and the handle shaft are fixed by tightening a mounting screw. (Conventional example 1)

It is also known that a leaf spring is mounted in the hub hole of the latch hub, and a detent shaft such as a protruding angular shaft is fitted and fixed from the lever handle through the leaf spring. (Conventional example 2)

The detent shaft is composed of two elongated members, and both members are aligned and fitted into the holes of the hub hole and the handle shaft. In this state, the handle is inserted into the gap formed between the facing portions of both members. It is also known that the wedge body is screwed from the outside of the shaft by screwing it in, and both members are pressed against the hub hole of the latch hub and the inner wall surface of the hole of the handle shaft to be fixed. Has been. (Conventional example 3)

Furthermore, the detent shaft has a two-part structure,
Each of the divided surfaces is a convex curved surface that can be contacted with each other, and one of the two divided members is pressed by a screw so that the two divided members can be pressed against the inner wall surface of the hub hole and the handle shaft hole. There is also one (conventional example 4), and various structures other than this are also proposed.

[0006]

However, the above-mentioned conventional example 1
Since the screw easily loosens due to vibration or the like, the handle shaft loosens during repeated use, which eventually causes rattling and the handle shaft slips out of the rotation preventing shaft.

In the above-mentioned conventional example 2, the detent shaft can prevent rattling with respect to the hub hole of the latch hub, but the detent is attached to the hole for attaching the detent shaft of the handle shaft. Since it cannot be prevented, the handle shaft is loosened by repeated use and the handle shaft hangs down. Further, the leaf spring may be detached when the detent shaft is inserted, and further, the leaf spring and the hub hole have to be variously processed, which is expensive.

In the above-mentioned conventional example 3, if the wedge body inserted and pushed in the longitudinal gap between both members is loosened even after repeated use, the hub holes of both members are formed. In addition, the pressure applied to the inner wall surface of the hole of the handle shaft is reduced, and the handle shaft comes out in the axial direction.

Further, in the prior art example 4, since the tip of the screw presses one of the members having the two-divided structure, the screw is easily loosened. Therefore, also in this case, the handle shaft is loosened by repeated use. The same defect that rattle occurs and the handle shaft slips out is the same. Further, since the shaft has a two-divided structure or the divided surface is a convex curved surface portion, the cost becomes higher.

In view of the above problems of the prior art, the present invention makes it possible to fix the handle to the rotation preventing shaft without rattling by an easy operation, and to handle the handle shaft even if the push screw is loose. The purpose is to be able to prevent the escape of.

[0011]

In order to achieve the above-mentioned object, the present invention has a detent shaft fitted in a hub hole of a latch hub, and a hole of a handle shaft is freely fitted into an end portion of the detent shaft. In addition, on one side surface in the vicinity of the end portion of the whirl-stop shaft, a concave groove portion having an arc-shaped bottom surface that is long in the axial direction is formed, and the concave groove portion has an arc-shaped back surface that is long in the axial direction, A plastically deformable holding piece made of light metal or the like provided with a recessed portion in the middle is fitted, whereby the upper surface and the arc-shaped back surface of the holding piece are respectively the inner wall surface of the hole of the handle shaft and the surroundings. By facing the arc-shaped bottom surface of the recessed groove portion of the stop shaft, by pressing a substantially intermediate portion on the upper surface of the holding piece by a push screw screwed into the handle shaft,
The holding piece is bent or bent from the recessed portion, and the upper end and the arcuate back surface of the holding piece can be crimped to the inner wall surface of the hole and the arcuate bottom surface of the groove, respectively. The present invention is intended to provide a handle fixing device characterized by the above.

[0012]

The lock shaft is fitted into the hub hole of the latch hub, and the holding piece is fitted into the concave groove portion formed on one side surface of the end portion protruding outward from the hub hole. Since this holding piece is set so as to fit into the groove portion, the upper surface thereof is fitted into the groove portion so as to be flush with one side surface of the detent shaft.

Next, a handle shaft is fitted into the end of the rotation preventing shaft, and a push screw is screwed into a screw hole formed in the handle shaft. At this time, the position of the screw hole is on the upper surface of the holding piece. Therefore, it is set in advance so as to be substantially in the middle thereof.

When the push screw is screwed into the screw hole, its tip comes into contact with the substantially middle portion of the upper surface of the holding piece.
When the push screw is further screwed in, the holding piece is pressed downward at the tip, and at this time, a concave cutout is provided in the approximate middle part of the arcuate back surface to facilitate bending. Along with the fact that the holding piece itself is made of a plastically deformable material, the holding piece is pushed and bent by the pushing force of the pushing screw, and is deformed into a bent state or a bent state in a substantially upward side face shape. ..

That is, the holding piece is bent in the central portion downward by the depth of the recessed portion of the arcuate back surface, so that both longitudinal end portions thereof are bent upward or broken. In other words, the holding piece is symmetrically deformed with its central portion and both end portions being perpendicular to the axial direction.

Therefore, the holding piece is crimped at its arcuate inner surface to the arcuate bottom surface of the concave groove portion of the detent shaft, and the upper surface at one or both ends thereof is crimped to the inner wall surface of the hole in the handle shaft. As a result, the detent shaft and the handle shaft are crimped and fixed in the direction perpendicular to the axial direction.

When the handle shaft is repeatedly used or subjected to vibration, the push screw may be loosened. However, even in such a case, the holding piece does not return to its original shape like the spring. The bent or bent state is maintained, and the handle shaft does not rattle or separate from the detent shaft.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing an embodiment. FIG. 1A shows a handle fixing device in the case of a lever handle lock, in which a hub shaft 2 is rotatably supported by a latch hub 1 and is not shown by rotating the hub shaft 2 forward and backward. The latches appear and disappear from the latch hub 1, and the doors (not shown) are locked and unlocked, respectively. In the axial direction of the hub shaft 2, a hub hole 3 formed by a square hole, an elliptical hole or the like is penetrated, and in the illustrated example, a central portion of a detent shaft 4 is fitted into the hub hole 3, and both end portions 4a, 4a thereof are fitted. Each of them is projected from the hub hole 3 to the outside, and reference numeral 5 in the drawing denotes a case.

One side surface 4 at the end 4a of the detent shaft 4
In b, a groove 6 is formed to be long in the axial direction, and its bottom surface shape is formed into an arcuate bottom surface 6a curved in the axial direction.

A holding piece 7 for fixing the handle shaft 8 as described later is fitted in the groove portion 6. This holding piece 7 is made of a plastically deformable material, for example,
It is integrally formed of a light metal material such as blunted aluminum, and its upper surface 7a is formed into a flat surface, and its bottom surface is formed into an arcuate inner surface 7b having substantially the same curvature as the arcuate bottom surface 6a of the recessed groove portion 6 described above. In addition, as shown in FIG. 2, the holding piece 7 is at a substantially intermediate portion of the arc-shaped back surface 7b so that both end portions in the longitudinal direction are easily bent upward from the substantially intermediate portion in the longitudinal direction. A recessed portion 7c having a depth a is formed long in the longitudinal direction. Here, the illustrated recessed portion 7c is formed by cutting out the entire width of the arc-shaped inner surface 7b, but is formed as a groove groove in the longitudinal direction only in the widthwise middle portion of the arc-shaped inner surface 7b. You may do so.

In the illustrated example, the lever 8a is integrally formed at the end of the handle shaft 8, but not the lever but a knob (not shown) is integrally provided, or the knob is fixed by another member. Etc. are used. Further, in the illustrated example, a case is shown in which the pair of left and right handle shafts 8 are provided, but as is known, only one handle shaft 8 is provided to prevent the detent shaft 4.
There is also a case in which is not penetrated through the hub hole 3 but internally fitted.

The handle shaft 8 has a base end portion 8 of a lever 8a.
b, a horizontally long square hole corresponding to the above-mentioned rotation preventing shaft 4,
A hole 9 such as an elliptical hole is provided as a recess, and the handle shaft 8 is fixed to the end portion 4a of the detent shaft 4 as follows. As shown in FIG. 1 (A), the holding piece 7 is fitted into the groove 6 in the end portion 4a, so that the upper surface 7a of the holding piece 7 is substantially flush with the one side surface 4b of the end portion 4a. It will be in one state.

Next, the hole 9 of the handle shaft 8 is fitted into the end portion 4a of the detent shaft 4, and the push screw 11 is screwed into the screw hole 10 formed in the base end portion 8b of the handle shaft 8. Since the screw hole 10 is provided on the handle shaft 8 in advance so as to be located at a position facing the substantially middle portion of the upper surface 7a of the holding piece 7 in the longitudinal direction, the screw 1 is pushed into the screw hole 10.
When 1 is screwed in, the tip thereof comes into contact with a substantially middle portion of the upper surface 7 a of the holding piece 7 in the longitudinal direction.

When the push screw 11 is further screwed in,
As shown in FIG. 1B, the holding piece 7 made of a plastically deformable material is deformed into a divided state by pressing or bending the substantially middle portion in the longitudinal direction where the recessed portion 7c is formed. As a result, it is bent into a dogleg shape that opens substantially upward on the side surface. That is, the arcuate back surface 7 of the holding piece 7
The intermediate portion in the longitudinal direction of b is crimped to the arcuate bottom surface 6a of the concave groove portion 6, whereas in the illustrated example, both end portions 7d and 7e in the longitudinal direction of the holding piece 7 are in the hole 9 of the handle shaft 8. The end surface 4a of the detent shaft 4 is pressure-bonded to the inner wall surface 9a that faces the one side surface 4b.
And the handle shaft 8 are crimped in a direction perpendicular to the axial direction,
It becomes fixed.

When the handle shaft 8 is fixed as described above, the holding piece 7 is held in a bent or bent state as shown in FIG. Even if it is loosened, the holding piece 7 of the concave groove portion 6 slides the arc-shaped inner surface 7b with respect to the arc-shaped bottom surface 6a by the force of pulling out the handle shaft 8 from the end portion 4a (acts in the right direction in FIG. Since the piece 7 rises up, the handle shaft 8 is strongly prevented from coming off.

In FIG. 4, unlike the case where the handle shaft 8 is on both the indoor and outdoor sides and is detachably attached by the push screw 11 as in the case of FIG. 1, the handle shaft 8 is detachable on the indoor side R1. It is attached so that it can be freely
At the outdoor side R2, the handle shaft 8 is fixed to the detent shaft 4 by a fixing pin 12 so that the handle shaft 8 is not inadvertently removed. The cover is shown in contact with and fitted to the handle shaft 8.

In the above case, the push screw 1
When the holding piece 7 is bent or bent by screwing 1 in the above-described manner, only one end 7e is pressed against the inner wall surface 9a of the handle shaft 9, and the other end is not pressed. The portion 7d is arranged in the hole D1 of the door D as shown.

Here, in FIG. 4 described above, the one end portion 7d of the holding piece 7 is formed with the inclined surface 7f which is inclined downward from the upper surface 7a toward the end portion. When the handle shaft 8 on the outdoor side R2 is pulled out to the left after the push screw 11 is loosened and the handle shaft 8 is removed, the end portion 7d is engaged with the hub hole 3 by Therefore, it becomes possible to prevent inability to pull out.

Next, in FIG. 3, the concave groove portion 6 is formed on one side surface 4b of the detent shaft 4 so as to be elongated from the end portion 4a toward the central portion, and the holding piece 7 also has the concave groove portion 6 concerned. With the holding piece 7 fitted in the concave groove portion 6, the detent shaft 4 is fitted into the hub hole 3 and then fitted into the hole 9 of the handle shaft 8 from the end 4a. ,
By pushing the holding screw 7 into the screw hole 10 of the handle shaft 8 to bend or bend the holding piece 7 as described above, one end 7d of the holding piece 7 is moved to the inner wall surface of the hub hole 3 of the latch hub 1. 3a, the other end 7e
Are respectively crimped to the inner wall surface 9a of the hole 9 of the handle shaft 8.

In the case of such a construction, the detent shaft 4
The latch hub 1, the detent shaft 4, and the handle shaft 8 can be easily fixed by the single recessed groove portion 6, the holding piece 7, and the push screw 11.

[0031]

Since the present invention is constructed as described above, the holding piece fitted in the concave groove portion at the end portion of the rotation preventing shaft is recessed in the substantially central portion by the push screw screwed into the handle shaft. Both end portions in the longitudinal direction are bent or bent upward from the cutout portion and are pressed into the inner wall surface of the hole of the handle shaft, whereby the detent shaft and the handle shaft are axially moved. The handle shaft can be fixed without rattling by crimping and fixing the handle shaft in the right angle direction.

Further, even if the push screw is loosened due to repeated use of the handle shaft, vibration, etc., the holding piece maintains the above-mentioned deformed state, so that the holding piece does not loosen or rattle, and Even if the pulling force of the handle shaft with respect to the detent shaft is applied, the holding piece slides in the recessed groove portion, so that the handle shaft can be reliably prevented from coming off or coming off.

[Brief description of drawings]

1A and 1B are embodiments of a handle fixing device according to the present invention, in which FIG. 1A is a longitudinal sectional view showing a state before a handle shaft is fixed, and FIG. It is an expanded longitudinal cross-sectional view which shows a part of the state which fixed the handle shaft to FIG.

FIG. 2A is a side view showing a holding piece that is one member of the present invention, and FIG. 2B is a cross-sectional view showing an end portion of a rotation stop shaft.

FIG. 3 is a vertical cross-sectional view showing another embodiment of the present invention partially cut away.

FIG. 4 is a vertical cross-sectional view showing a heterogeneous embodiment of the present invention with a part cut away.

[Explanation of symbols]

 1 Latch Hub 3 Hub Hole 4 Non-rotating Shaft 4a End of Non-rotating Shaft 4b One Side of Non-rotating Shaft 6 Recessed Groove 6a Arc Bottom Bottom of Recessed Groove 7 Holding Piece 7a Upper Side 7b of Holding Piece Arc Back Depth 7c Holding Piece Recessed part 8 Handle shaft 9 Handle shaft hole 11 Push screw

Claims (1)

[Claims] 1. A detent shaft is fitted in a hub hole of a latch hub, a hole of a handle shaft is freely fitted in an end of the detent shaft, and the detent shaft is provided on one side surface in the vicinity of the end. , A concave groove portion having an arcuate bottom surface that is long in the axial direction is formed, and the concave groove portion has an arcuate back surface that is long in the axial direction and is provided with a concave cutout portion at approximately the middle portion thereof. The holding piece is fitted so that the upper surface and the arcuate back surface of the holding piece face the inner wall surface of the hole of the handle shaft and the arcuate bottom surface of the concave groove portion of the detent shaft, respectively. By pressing the approximately middle part on the upper surface of the holding piece by the screwed push screw,
The holding piece is bent or bent from the recessed portion, and the upper end and the arcuate back surface of the holding piece can be crimped to the inner wall surface of the hole and the arcuate bottom surface of the groove, respectively. A handle fixing device characterized in that