JPH10252322A - Fixing structure of square core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly fix a square core inserted in a square hole by a method wherein an elastic member is disposed between the square hole and the square core and the square core is pressed from two directions through the force of the elastic member. SOLUTION: Elastic members 10 are arranged on the horizontal surface and the vertical surface of the square hole 41 such that a square hole 41 is made narrower in the two directions of a horizontal direction and a vertical direction. When a square core 4 is inserted in the square hole 41 in which the elastic members 10 are arranged, a force to cause movement of the elastic members 10 in the advancing direction of the square core 4 is applied. However, since a lock piece 11 is brought into abutment against the end face of a hub 40, the elastic members 10 are prevented from displacement in a position. The square core 4 inserted in the square hole 41 deforms the arcuate elastic member 10 into a flat state and the square 4 is pressed in a direction in which no elastic member 10 is arranged. As a result, the square core 4 is pressed in a vertical direction and a horizontal direction and the square core 4 and a hub 40 firmly fixed both in a vertical direction and a horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure of a square core for fixing a square core inserted into a square hole of a hub incorporated in a lock case. More specifically, the square core rattles in a square hole of the hub. The present invention relates to a fixing structure of a square core which is firmly fixed without being fixed.

[0002]

2. Description of the Related Art As shown in FIG. 5, a latch lock and other locks are rotated by a hub 40 incorporated in a bottomed tubular lock case 1 having an opening. The latch bolt 2 projects and retreats from the opening. As shown in FIG. 6, the hub 40 has a square hole 41 at the center and two convex portions 42, 42 projecting in opposite directions. A square core 4 integrated with the handle 3 such as a lever or a grip ball is inserted through a square hole 41 formed in the hub 40. A compression spring (not shown) abuts on the two convex portions 42, 42 protruding from the hub 40, so that the rotated hub 40 is forcibly returned to the original state.

[0003] That is, when the handle 3 is turned, the rotational force is transmitted to the square core 4, and the hub 40 is rotated by the rotation of the square core 4, and the latch bolt 2 is retracted. Therefore, to retract the latch bolt 2 to open the door,
It is necessary to turn the handle 3. When the steering wheel 3 is turned, if the steering wheel 3 rattles, the usability deteriorates.
It is desirable that the handle 3, the square core 4, and the hub 40 are firmly fixed. Since the handle 3 and the square core 4 can be screwed together, they can be fixed without rattling between them.

However, since the square core 4 has a structure in which the square hole 41 of the hub 40 is inserted, the square core 4 and the hub 40 cannot be screwed, and it is difficult to fix them firmly.
The square core 4 was liable to rattle in the square hole 41 of the hub 40. For this reason, various types of fixing structures of the square core 4 in which rattling between the square core 4 and the hub 40 is less likely to occur are proposed. For example, the fixing structure of the square core 4 shown in FIG. 7 is a device disclosed in Japanese Utility Model Application No. Hei 6-74764.
Is a structure in which a gap 102 is formed between a pair of quadrangular prism-shaped members 101, 101, and a thin push plate 103 is inserted into the gap 102. Push plate 10
The exposed portion 3 is pressed by a screw from the square hole 41 of the handle 3 toward the space between the square pillar members 101, 101, and a part of the push plate 103 is removed from between the square pillar members 101, 101. Then, the square core 4 is fixed in the square hole 41 of the hub 40 by projecting toward the front side or the back side of the paper surface and abutting the projected part on the flat part of the square hole 41 of the hub 40.

[0005]

The above-mentioned square core 4 according to the prior art is firmly fixed in the vertical direction because the projecting portion is pressed against the flat portion of the square hole 41 of the hub 40. . However, the fixing force of the square core 4 in the horizontal direction with respect to the contact surface of the pressing plate 103 is merely due to the frictional force between the plane portions of the square core 4 and the square holes 41.
If there is a gap between the side face of the hub 40 and the square hole 41, the square core 4 rattles in the horizontal direction in the square hole 41 of the hub 40, and there is a drawback that it is not fixed well.

Accordingly, an object of the present invention is to provide a fixing structure of a square core in which the square core is firmly fixed in the square hole of the hub without vibrating both vertically and horizontally. . Note that the terms “horizontal”, “vertical”, and “vertical” described below are used for convenience for ease of explanation, and the actual angle of the square core 4 or the like is arbitrary. Cannot be said to be horizontal or vertical.

[0007]

According to the present invention, there is provided a square core fixing structure for fixing a square core inserted into a square hole of a hub incorporated in a lock case. An elastic member is disposed between a square hole and a square core, and the square member is pressed from two directions by the elastic member.

According to the above-described structure for fixing the square core, when the square core is inserted into the square hole in which the elastic member is disposed, the elastic member is deformed, and the square core in the square hole is bidirectionally fixed by the elastic member. And is firmly fixed.

According to another aspect of the present invention, there is provided a square core fixing structure for fixing a square core inserted into a square hole of a hub incorporated in a lock case. An elastic member integrally having a member piece is provided, and the elastic member is disposed between a square hole and a square core, and the two or more member pieces contact two or more inner surfaces of the square hole to press the square core from two directions. This is a fixing structure of the square core.

In the fixing structure of the square core according to the present invention, since the elastic member has two or more member pieces, workability of disposing the elastic member in the square hole is improved.

Further, in the square core fixing structure obtained by improving the above invention, the elastic member is constituted by a plate warped in an arc shape, and a locking piece is formed at least at one end. It is a fixing structure of the square core described in 1 or 2.

According to the above-described structure for fixing the square core, the arc-shaped elastic member is deformed into a flat shape when the square core is inserted into the square hole, and is resiliently deformed by the spring force to restore the original arc shape. Press the square core. Also, the locking piece formed on at least one end of the elastic member abuts on the end face of the hub,
When the square core is inserted into the square hole, the elastic member does not shift.

[0013] Still another square core fixing structure for achieving the above object is that an elastic member integrally has two or more member pieces, has a substantially L-shaped cross section, and has a shape similar to that of the other member. The fixing structure of the square core according to claim 2 or 3, wherein a slit is provided at a connecting portion of the square core.

According to still another aspect of the present invention, in order to achieve the above object, at least one ridge is formed at a portion where the elastic member comes into contact with the square core. 5. The fixing structure for a square core according to any one of 4.

According to the above-described structure for fixing the rectangular core, when the rectangular core is inserted into the rectangular hole narrowed by the convex line formed on the elastic member, the convex line is deformed into a flat shape. The square core is pressed and fixed by the spring force of the elastic member trying to restore the original ridge. Here, it is desirable that the ridge is formed in a direction perpendicular to the axial direction. When the ridge is formed in a direction orthogonal to the axial direction, the square core inserted into the square hole is pressed so as to be hardly displaced in the axial direction.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of an elastic member used for a fixing structure of a square core according to a first embodiment of the present invention, and an enlarged perspective view of a locking portion of the elastic member. FIG. 2 is a sectional view when the elastic member of the first example is arranged in a square hole of the hub. FIG.
FIG. 6 is a perspective view of an elastic member used for a square core fixing structure according to a second embodiment of the present invention. FIG. 4 is a perspective view of an elastic member used for a fixing structure of a square core according to a third embodiment of the present invention. The same parts as those in the related art are denoted by the same reference numerals, and description thereof will be omitted.

The fixing structure of the square core 4 according to the present invention
The elastic members 10, 20, 30 are disposed in the 0 square hole 41. As shown in FIG. 1A, the elastic member 10 of the first example is formed by bending a leaf spring into an arc shape and bending at least one end, preferably both ends, to form a locking piece 11. It is. The shape of the locking piece 11 is, for example, a small piece shape as shown in FIG. 1B, and it is possible to adopt a shape that is bent to an angle of about 60 ° to 90 ° with respect to the main body. In addition, the locking piece 11
As shown in FIG. 1 (c), it is also recommended that the end portion be widened for the purpose of facilitating mounting. Conversely, locking piece 11
As shown in FIG. 1D, it is also recommended that the tip be bent inward. The configuration in FIG. 1D is intended to improve the strength at the time of mounting.

As shown in FIG. 2, the main body portion of the elastic member 10 has an arc shape whose length matches the length of the square hole 41 and is narrowed toward the back of the square hole 41. The locking piece 11 abuts against the end face of the hub 40 to prevent the elastic member 10 from being displaced. Therefore, a step 43 is formed on the end face of the hub 40 to fit the locking piece 11, and the locking piece 11
Does not protrude from the end face of the hub 40. The elastic member 10 is disposed on the horizontal plane and the vertical plane of the square hole 41 so as to narrow the square hole 41 in two directions, that is, the horizontal direction and the vertical direction. Therefore, the width of the elastic member 10 is made slightly smaller than the width of the square hole 41.

The square hole 4 in which such an elastic member 10 is arranged
1, the square core 4 is inserted. At this time, a force to move the elastic member 10 in the traveling direction of the square core 4 is applied.
However, since the locking piece 11 abuts against the end face of the hub 40, the elastic member 10 is not displaced.
Therefore, when the locking piece 11 is formed only at one end, the square core 4 is inserted into the square hole 41 from the locking piece 11 side. When the locking pieces 11 are formed at both ends, the square core 4 can be inserted into the square hole 41 from either side.

The square core 4 inserted into the square hole 41 deforms the arc-shaped elastic member 10 into a flat shape. Elastic member 10
Has a spring force for restoring the original arc shape, the square core 4 is pressed toward the side where the elastic member 10 is not arranged. Moreover, since the elastic member 10 is arranged on the horizontal plane and the vertical plane of the square hole 41 and is narrowed in two directions,
The square core 4 inserted in 1 is pressed in the vertical direction and the horizontal direction, and the square core 4 and the hub 40 are firmly fixed both vertically and horizontally. Therefore, when the handle 3 is turned, the rattle 2
Retreats into the lock case 1.

The above-mentioned first elastic member 10 is such that the two elastic members 10 are separately arranged on the horizontal plane and the vertical plane of the square hole 41, but the second elastic member 20 shown in FIG. As described above, the end face shape may be an "L" shape, and the arc-shaped horizontal part member 22 and the arc-shaped vertical part member 23 may be integrally formed by bending.
When the horizontal member 22 and the vertical member 23 are provided integrally, it is desirable to provide a slit 24 in the middle of the boundary between the two, as shown in FIG. Here, the slit 24 allows the intermediate portion to be easily deformed from a convex shape to a concave shape. That is, the elastic member 10 employed in the present embodiment includes two member pieces 22 and 2.
3 are integrated, and each of the member pieces 22 and 23 is warped in an arc shape. Therefore, when this is deformed, an internal stress is generated at the joint between the member pieces 22 and 23, which hinders the deformation. Therefore, in the present embodiment, a slit 24 is provided in the intermediate portion to prevent the occurrence of stress. The locking piece 21 of the second elastic member 20 is formed only on either the horizontal piece 22 or the vertical piece 23, so that the elastic member 20 can be prevented from being displaced. As the shape of the locking piece 21, any of the three types shown in FIG. 1 described above can be used. In FIG.
As an example, the locking piece 21 in which the tip portion is folded inward is described.

When the square core 4 is inserted into the square hole 41 in which the elastic member 20 is disposed, the elastic member 20 is not displaced, and the intermediate portion is shifted from the convex line to the concave line. Deform to. The square core 4 is pressed by a spring force that attempts to restore the deformed state to the original state. Since the elastic member 20 is composed of the horizontal member 22 and the vertical member 23, the square core 4 is firmly fixed both vertically and horizontally.

A third elastic member 3 as shown in FIG.
Numeral 0 indicates that one or more ridges 34 are formed on the leaf spring. By forming the ridges 34 in a direction perpendicular to the axial direction, it is possible to fix the square core 4 so that it is difficult for the square core 4 to move in the axial direction. In the elastic member 30 of the present embodiment, the member 32 of the horizontal part and the member 33 of the vertical part are connected at the middle part, and both ends are cut away. The projecting ridges 34 are formed at the boundary between the part 32 of the horizontal part and the part 33 of the vertical part, which are connected to each other and separated from each other. Further, the member 32 of the horizontal portion is slightly angled at the portion of the ridge 34, and is warped in an arc shape when observed as a whole. The second elastic member 20 is also used for the elastic member 30 of the present embodiment.
Similarly to the above, the member 32 of the horizontal portion and the member 33 of the vertical portion
A locking piece 31 is formed on one or both of the members to prevent the elastic member 30 from being displaced. Locking piece 3
As the shape 1, any of the three types shown in FIG. 1 can be used. FIG. 4 shows an example in which the tip of the locking piece 31 is straight.

When the square core 4 is inserted into the square hole 41 in which the elastic member 30 is arranged, the elastic member 30 is not displaced and the ridge 34 is flattened. Then, the square core 4 is pressed by the spring force of the elastic member 30 trying to restore to the original ridge 34. Since the elastic member 30 is composed of the member 32 of the horizontal portion and the member 33 of the vertical portion, the square core 4 is firmly fixed both vertically and horizontally.

The present invention can be modified without being limited to the above embodiment. For example, the third elastic member is formed by integrally connecting the member of the horizontal portion and the member of the vertical portion, but may be formed separately as the first elastic member.

[0026]

According to the present invention, the elastic member is arranged in the square hole, and the square core is pressed by the elastic member in two directions, a vertical direction and a horizontal direction. Therefore, since the square core is firmly fixed to the hub both vertically and horizontally, the latch bolt retreats into the lock case without rattling when the handle is turned. As a result, a lock with excellent usability can be provided. In addition, since a separate operation for fixing the square core and the hub is not required, the workability of assembling the square core to the hub is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an elastic member used in a first embodiment of a square core fixing structure according to the present invention, and an enlarged perspective view of a locking portion of the elastic member.

FIG. 2 is a cross-sectional view when the elastic member of the first example is arranged in a square hole of a hub.

FIG. 3 is a perspective view of an elastic member used in a square core fixing structure according to a second embodiment of the present invention.

FIG. 4 is a perspective view of an elastic member used for a fixing structure of a square core according to a third embodiment of the present invention.

FIG. 5 is an exploded perspective view of the lock.

FIG. 6 is a perspective view of a hub.

FIG. 7 is a cross-sectional view of a conventional square core fixing structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lock case 4 Square core 10, 20, 30 Elastic member 22 Member of horizontal part 23 Member of vertical part 11, 21, 31 Engagement piece 32 Member of horizontal part 33 Member of vertical part 34 Projection 40 Hub 41 Square hole

Claims (5)

[Claims] In a structure for fixing a square core inserted into a square hole of a hub incorporated in a lock case, an elastic member is arranged between the square hole and the square core, and the elastic member is A square core fixing structure characterized in that the square core is pressed from two directions. 2. A square core fixing structure for fixing a square core inserted into a square hole of a hub incorporated in a lock case, comprising: an elastic member integrally including two or more member pieces; The square core fixing structure, wherein the elastic member is disposed between the cores, and the two or more member pieces contact the two or more inner surfaces of the square hole and press the square core from two directions. 3. The square core fixing structure according to claim 1, wherein the elastic member is formed of a plate that is curved in an arc shape, and a locking piece is formed at least at one end. 4. The elastic member according to claim 2, wherein the elastic member has two or more member pieces integrally, has a substantially L-shaped cross section, and has a slit at a connecting portion between the member pieces. Or the fixing structure of the square core according to 3. 5. The fixing structure for a rectangular core according to claim 1, wherein one or more convex stripes are formed at a contact portion of the elastic member with the rectangular core.