JPS6028760Y2 - Crescent tightening - Google Patents

Description

[Detailed description of the invention] This invention is characterized by being able to draw the opposite shoji together sufficiently when tightening the crescent, having a good appearance, and increasing safety as a lock by double locking. .

Embodiments of the present invention will be specifically described below.

The crescent lock includes a pedestal 1 raised in the shape of a cap, a lever-shaped knob 4 pivotally mounted on the top wall 2 of the pedestal with a rotating shaft 3, and a first locking arm 5 operated by the knob. It mainly consists of a second locking arm 6 that locks the locking arm in the engaged position.

The first locking arm 5 is swingably provided in a space 8 surrounded by the top wall 2 and side wall 7 of the pedestal, and engages with the receiving portion 9 to draw and lock the opposing shoji 10 and 10' together. A hooking edge 11 of an arc-shaped wall is formed, and the hooking edge 11 protrudes into and out of the base from an opening 12 in the side wall 7.

Like the first locking arm, the second locking arm 6 is swingably provided in the space 8 of the pedestal, and one end thereof extends outward from the opening 14 of the side wall 7 facing the opening 12.

1 and 2, the first locking arm 5 is in an engaged position protruding outward from the opening 12, and the second locking arm 6 locks this locking arm.

There is a 90 degree play between the knob 4 and the first locking arm 5,
When the knob 4 is rotated 90 degrees in the unlocking direction of arrow A, the knob and the first locking arm are connected together, and the knob is further rotated 90 degrees.
When the locking arm 5 rotates by 0 degrees, the locking arm 5 rotates in the same direction, and its engaging portion 11 is retracted into the opening 12 or into the pedestal to reach the unlocked position.

From this unlocked position, the lock arm 5 does not rotate until the knob rotates 90 degrees in the locking direction opposite to arrow A from the imaginary line position to the solid line position, and when the knob further rotates 90 degrees, the lock is locked. The arm rotates 90 degrees in the same direction, and its engaging portion 11 protrudes outward from the opening 12 to reach the locked position.

The interlocking relationship between the knob 4 and the first locking arm 5 is shown in detail in FIGS. 6-8.

The rotating shaft 3 formed integrally with the knob 4 is loosely fitted into the shaft hole 17 of the top wall 2 of the pedestal, a tube shaft 18 is loosely fitted around the shaft, and a first locking arm is fitted around the tube shaft. 5 are fixed so that they rotate together.

A washer 19 fixed to the tip of the rotary shaft 3 with a caulk 21 is engaged with a flange 20 of a tube shaft 18, the flange is engaged with a locking arm 5, and the knob 4 is pivotally attached to the base 1.

The knob 4 has a 180 degree (semicircular) groove 23 formed in its boss portion 22, and a 90 degree (4 circular) protrusion 24 that fits into the groove is formed on the end surface of the tube shaft 18. (6th ~
Figure 7).

When the first locking arm 5 is in the locked position, the protrusion 24
As shown in the figure, it engages with one end of the groove 23, and there is a 90 degree play between it and the other end 26.

When knob 4 is rotated 90 degrees in the unlocking direction of arrow A, groove 2
When one end 26 of the groove 3 engages with the protrusion 24 and rotates further 90 degrees, the one end 26 of the groove rotates the tube shaft 18 90 degrees while pushing the protrusion 24, and the first locking arm 5 and the tube shaft rotate 90 degrees in the same direction as the knob. Rotate it once and pull it into the pedestal 1.

The knob 4 further includes a protrusion 27 formed on the boss portion 22 thereof.
An arcuate groove 28 into which the protrusion is inserted is located at the top 2 of the base.
The angle of the groove 28 is determined so that the protrusion 27 can rotate 180 degrees.

When the first locking arm 5 is in the locked position, the protrusion 27
As shown in the figure, the knob 4 is engaged with one end 29 of the groove 28, and the knob 4 is placed in the locked position shown in FIG.
There is a play of 180 degrees between 7 and the other end 30.

Knob 4 moves 90 degrees in the unlocking direction of arrow A from the seventh locked position.
The first locking arm 5 is held in the locked position until rotated once,
While rotating 90 degrees from the 90 degree position to the 180 degree position, the first locking arm 5 is rotated in the same direction by the knob 4 to the unlocked position, and the protrusion 27 is connected to the other end 30 of the groove 28. When engaged, the knob 4 stops at the unlocked position.

In FIGS. 4 and 5, the second locking arm 5 locks the first locking arm 5.
The operation of the locking arm 6 is shown.

When the first locking arm 5 is in the locked position, the tension spring 33 tensioned between the protrusion 31 of the washer 19 and the predetermined position 32 of the base 1 moves the washer 19 in the opposite direction of arrow A, as shown in FIG. It functions to rotate in the locking direction, and in turn rotates the knob 4, which is integrated with the washer, in the same direction to hold it in the locked position.

The second locking arm 6 is constantly pulled around the pin 35 by a tension spring 34 so as to rotate in the locking direction of arrow B, and its engaging portion 36 engages with a protrusion or engaging portion 37 of the first locking arm 5. Therefore, the first locking arm 5 cannot be rotated in the unlocking direction of arrow A and is locked.

In this locked state, when the second locking arm 6 is rotated in the unlocking direction opposite to the arrow B, the engaging portion 36 is disengaged from the protrusion 37, and the knob 4 can be turned in the unlocking direction as the arrow A.

When the knob rotates 180 degrees, the first locking arm 5 reaches the retracted position, and the second locking arm 6 returns to its original position (locked position).
The spring 33 acts to rotate the washer in the unlocking direction of arrow A and holds the knob 4 in the unlocked position (FIG. 5).

When the first locking arm 5 is rotated to the locked position again, the engaging portion 36 of the second locking arm 6 automatically engages with the protrusion 37.

This engagement improves the safety of crescent tightening.

As described above, the present invention has a locking arm 5 that protrudes inward and outward from the opening 12 on the side surface of the pedestal 1, extends narrowly in one direction from the center of rotation, and has a hooking edge 11 at the tip thereof in the direction of the mounting surface of the pedestal 1. The locking arm 5 is bent into a U-shape so as to be concave, and there is a rotational play of approximately 90 degrees between the locking arm 5 and the knob 4.While the knob rotates 180 degrees, the locking arm From the unlocked position, the locking position is reached by rotating >'90 degrees, and the unlocking position, which is one end of the swinging range of the locking arm, is a position within the pedestal where the locking arm extends in the longitudinal direction of the pedestal. Since the pedestal is specified in Since it does not protrude toward the front when moving, it has a good appearance and does not get in the way.Moreover, it is closer to the pedestal mounting surface of the hooking edge 11, so that the height from the mounting position 10 of the receiving part 9 that hooks to the hooking edge 11 can be reduced. It can be made lower than before the limitation, and therefore the deflection of the receiving part 9 can be reduced, and the opposing shoji 10, 10 can be strongly attracted to each other.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIGS. 1 and 2 are perspective views, FIG. 3 is a plan view of the installed state, FIGS. 4 and 5 are bottom views, and FIG. 6 is a vertical sectional view. Figures 7 and 8 are from ■-■ in Figure 6.
It is a sectional view along the line and the line ■-■. 1 is a pedestal, 3 is a rotating shaft, 4 is a knob, 5 is a first locking arm,
6 is the second locking arm, 9 is the receiving part, 11 is the engaging edge, 12.13
is an opening, and 18 is a tube axis.

Claims (1)

[Scope of utility model registration request] a pedestal 1; a first locking arm 5 having an engaging edge 11 that engages with the receiving portion 9 and swingably provided within the space 8 of the pedestal; The knob 4 is provided with a knob 4 that rotates the engaging edge 11 of the first locking arm between a locked position and an unlocked position, and the knob 4 is pivotally attached to the base 1 by a rotating shaft 3 that rotates together with the knob 4, and a protrusion 27 of the knob 4 is provided. The first locking arm 5 has a tube shaft 18 that rotates together with the first locking arm 5, and the tube shaft is loosely fitted to the rotating shaft. Furthermore, the groove 23 of the knob 4 and the protrusion 24 of the tube shaft 18 that fits into the groove are rotatable by S 90 degrees,
The first locking arm 5 has a play of 90 degrees, and the first locking arm 5 extends narrowly in one direction from the center of rotation, and has a hooking edge 11 at its tip bent into a U-shape so as to be recessed toward the mounting surface of the pedestal 1. Therefore, the unlocked position at one end of the swing range of the locking arm 5 is determined at a position where the locking arm 5 extends in the longitudinal direction of the pedestal 1 within the space 8 of the pedestal 1, and the locked position at the other end is determined at a position where the locking arm 5 extends in the longitudinal direction of the pedestal 1. Opening 1
Crescent tightening located at a position protruding from 2.