JPH081115B2 - Lock mechanism for opening regulator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism of an opening adjuster applied to a wing such as a window and an opening / closing lid of a housing which is swingably and openably supported.

[0002]

2. Description of the Related Art In an opening adjuster for a wing that swings and opens and closes, a lock mechanism is provided between a relative moving check rod and a guide for this, and a lock member is provided each time the wing reaches a predetermined opening angle. Is kept in a locked state to keep the wing open, that is, to automatically lock the restraining rod with the lock member when the wing is opened, for example, Japanese Utility Model Publication No. 58-35824 and Japanese Utility Model Publication No. 2-4992. Is known to

[0003]

As described above, the opening degree adjuster having the automatic lock function has a problem in that the lock mechanism automatically locks the restraining rod even when the wing is closed. is there. Therefore, while maintaining the unlocking lever and operation knob with one hand in the unlocked state,
The wing must be closed with the other hand.For example, in the case of a large window with a large sticking-out amount of the restraint bar, the upper body must be leaned out and both hands should be pushed out of the window to close the window. There is a danger of. Also, when the lid of the housing with a large left and right width is supported by a pair of opening adjustment devices, the left and right opening adjustment devices cannot be unlocked at the same time, so the lid closing operation must be performed by two workers. There is an inconvenience.

According to the present invention, when the wing is closed, the automatic locking function of the lock mechanism can be released so that the opening regulator can be returned to the standby state by simply closing the wing. And aim to improve safety. Another object of the present invention is, when reducing the opening amount of the wing, the opening degree with excellent operability in which the lock mechanism that has been unlocked can be returned to a state where it can be automatically locked again by simply opening and closing the wing. To obtain the lock mechanism of the adjuster.

[0005]

The present invention is a wing 2
In the lock mechanism of the opening degree adjuster, which automatically locks and locks the restraining rod 5 provided between the wing frame 1 and the wing frame 1, it is provided as a member of the opening degree adjuster. A lock pin 14 that selectively falls into and engages with the plurality of lock holes 11, and a lock spring 15 that urges the lock pin 14 to move toward the engagement posture.
And a case 13 for accommodating the lock spring 15 and the lock pin 14, and an unlock mechanism provided on the lock pin 14, and the unlock mechanism includes:
In the case 13, in a state of slightly projecting from the engaging end of the lock pin 14, the unlock claw 19 movably supported inward and outward in the radial direction with respect to the pin 14 and the unlock claw 19 are provided. The unlocking claw 19 is arranged on the pin peripheral surface on the lower side in the moving direction when the check rod 5 is closed and moved. It is a requirement. Specifically, the restraining rod 5 is composed of a pair of rod bodies 5A and 5B that are connected to each other in a stretchable manner.
Attach the lock mechanism to A and lock hole 1 to the other rod 5B.
1 is formed. Further, in the opening degree adjuster of a form in which the case 13 rotatably supported by the wing frame 1 and the restraining rod 5 whose one end is connected to the wing 2 are connected in a penetrating manner, the case 13 is provided in the case 13. Guide hole 3 for check rod 5
A lock mechanism is provided above 4, and the check rod 5 has a lock hole 1
1 is provided.

[0006]

The unlocking claw 19 is constantly urged to move outward in the radial direction by the unlocking spring 20, and the unlocking claw 19 becomes an obstacle when the locking claw 19 projects outward from the peripheral surface of the lock pin 14. The lock pin 14 falls into the lock hole 11 and cannot be engaged. In addition, the unlock claw 19
In a state in which the outer tip of the lock falls into the lock hole 11, a part of the lock pin 14 is received by the peripheral wall of the lock hole 11. Therefore, the lock pin 14 does not engage with the lock hole 11 and can get over each lock hole 11 one after another. In order to make this overcoming direction coincide with the closing direction of the wing 2, the arrangement position of the unlock claw 19 is specified.

Contrary to the above, in the state where the unlock claw 19 and the lock hole 11 relatively move close to each other (the state in which the wing 2 is opened), the unlock claw 19 enters the lock hole 11 ahead of others. . At this time as well, a part of the lock pin 14 is received by the peripheral wall of the lock hole 11, but the unlocking claw 19 slightly protrudes from the engaging end of the lock pin 14, so that the end of the unlocking claw 19 moves as the lock pin 14 moves. The portion abuts the lock hole 11 and resists the unlock spring 20 to unlock the unlock claw 19
The whole is pushed into the inside, and finally the lock pin 14
Is pushed by the lock spring 15 and enters the lock hole 11. That is, it automatically locks.

[0008]

According to the lock mechanism of the present invention, when the wing 2 is opened and operated, the automatic lock function can be exhibited similarly to the conventional mechanism, and when the wing 2 is closed and operated,
The opening degree adjuster 3 can be returned to the standby state by releasing the automatic lock function and simply closing the wing 2. Therefore, even when the amount of the restraint rod 5 protruding to the outside of the window is large, the wing 2 can be closed and operated in a safe state such as grasping the wing frame 1 with one hand. Further, when the wing 2 having a large left and right width is operated to be closed, only one operator needs to perform the closing operation by simply unlocking the lock mechanism, and the operability of the opening adjuster equipped with the lock mechanism is improved. The safety can be improved.

Unlock claw 19 and lock pin 14
Goes over the lock hole 11 when the wing 2 is operated to be closed, and conversely falls into the lock hole 11 when operated to be opened. Therefore, in order to reduce the opening amount of the wing 2, the automatic lock function is released, the wing 2 is closed, and the wing 2 is opened near the desired opening amount to automatically lock the wing 2. This is advantageous in that adjustment to the side where the amount decreases can be performed easily.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1 to 6 show a first embodiment of a lock mechanism according to the present invention. In FIG. 4, reference numeral 1 is a wing frame, 2 is a wing, and 3 is an opening degree adjuster. The wing 2 is swingably supported on the wing frame 1 via a hinge 4, and can be fixed by an opening adjuster 3 at each predetermined open position. The opening degree adjuster 3 is composed of a pair of elastic rods 5A and 5B, and a bracket 9 that connects both ends of the rod 5 to the wing frame 1 and the wing 2 via pins 7 and 8. 10 and a lock mechanism provided on the rod body 5A on the wing frame 1 side. The rod 5B attached to the wing 2 side is formed of a stainless steel strip plate, and four lock holes 11 are formed on the plate surface at regular intervals. This rod 5B
The rod body 5A on the wing frame 1 side is formed to have a C-shaped cross section in order to hold only the slide.

1 to 3, the lock mechanism is caulked and fixed to the rod body 5A, and is further welded to the case 13.
A lock pin 14 that is vertically movable in the case 13, a lock spring 15 that urges the lock pin 14 downwardly toward the engagement position, and a lock pin 14 that projects from the upper end wall of the case 13. The operation knob 16 is fixed to the pin end with a screw, and the unlock mechanism is provided at the bottom of the lock pin 14.

The unlock mechanism is provided to prevent the lock mechanism from automatically switching to the locked state when the wing 2 is closed.
4 and the unlock claw 19 arranged in the grooves 17 and 18 provided on the sliding contact surface of the case 13, and the unlock spring 20 for urging the unlock claw 19 toward the groove 17 on the case 13 side. It consists of. The unlocking claw 19 is a plate-like member that is long in the vertical direction, and the upper end of the unlocking claw 19 in the groove 18
1 is swingably supported. A protrusion 22 is provided in the middle of the unlocking claw 19 to constantly engage the groove 17 on the case 13 side to prevent the lock pin 14 from rotating, and a spring receiving recess 23 is provided on the opposite side. A projecting arc surface 24 for overcoming the edge of the lock hole 11 is provided. The unlocking claw 19 moves in the moving direction when the rod body 5B is closed (see FIG. 1).
Is arranged on the lower side pin peripheral surface (in the direction opposite to the arrow), and the lower end thereof projects downward from the lower end of the lock pin 14 in the assembled state. In FIG. 1, reference numeral 25 indicates
It is a stopper that prevents the rod body 5B from coming off.

Next, the operation of the lock mechanism will be described. For example, as shown in FIG. 4, when the wing 2 is fixed at a certain open position, the lock pin 14 is fitted into the lock hole 11 to prevent relative movement of the rods 5A and 5B as shown in FIG. ing. From this state, when the lock pin 14 is pulled up against the lock spring 15 by the operation knob 16, the unlock claw 19 is pushed out by the unlock spring 20 and inside the groove 17 on the case 13 side as shown in FIG. Get in. Only in this state, the rods 5A and 5B can move relative to each other.

When the wing 2 is opened from the state shown in FIG. 1, the rod 5B moves along with the wing 2, and the lock hole 11 adjacent to the lock hole 11 approaches the unlock claw 19 (see FIG. 6). (B) state). When the rod 5B is further slid, as shown in FIG. 6 (A), the unlocking claw 19 falls into the lock hole 11, and the lower end of the lock pin 14 contacts the upper surface of the rod 5B. Eventually, the unlocking claw 19 comes into contact with the inner peripheral surface of the lock hole 11 and is pushed into the groove 18 on the lock pin 14 side against the unlocking spring 20. Then, when the lock hole 11 comes directly under the lock pin 14, the lock pin 14 moves downward due to the pressing force of the lock spring 15, and again as shown in FIG.
Fit in 1. Therefore, when the operation knob 16 is pulled up, the wing 2 is opened by an appropriate amount, the operation knob 16 is opened, and then the wing 2 is further opened, the lock pin 14 engages with the nearest lock hole 11 and automatically locks. Switch to the state.

When the wing 2 is closed, as shown in FIG. 1, the lock pin 14 is pulled up to support the unlock claw 19 (or the lock pin 14) on the peripheral wall of the lock hole 11. When the wing 2 is closed in this state, the peripheral wall of the lock hole 11 enters inside the peripheral edge of the lock pin 14 before the unlock claw 19 falls into the lock hole 11. Therefore, the unlock claw 19
Even if is dropped into the lock hole 11, the lock pin 14 is received by the upper surface of the rod body 5B as shown in FIG. 6 (A). When the rod 5B is further slid and displaced, the projecting arc surface 24 of the unlocking claw 19 contacts the peripheral edge of the lock hole 11,
As shown in FIG. 6 (B), the user climbs onto the peripheral edge. The lock pin 14 and the unlock claw 19 can successively cross over the lock holes 11 in the same manner thereafter.

When the wing 2 is reversely opened during the closing operation, the unlocking pawl 19 first falls into the lock hole 11 and is pushed into the groove 18 as described above, so that the lock pin 14 automatically locks again. You can do it.

(Second Embodiment) FIG. 7 shows a second embodiment of the present invention in which the unlock mechanism is mainly changed. With this,
A hole 27 is provided inside the lock pin 14, and an L-shaped unlocking claw 19 and an unlocking spring 20 made of a leaf spring are accommodated in the hole 27, and the unlocking claw 19 and the unlocking spring 2 are provided.
Both ends of 0 were supported by pins 28 penetrating the holes 27 so as to be movable left and right. Further, a groove 29 is provided on the peripheral surface of the lock pin 14, and the pin 30 driven from the outer surface of the case 13 is inserted into the groove 29.
To prevent the lock pin 14 from rotating. An escape groove 31 for the unlocking pawl 19 is formed in the mounting portion of the lock pin 14. In this unlock mechanism, the unlock claw 19 is pushed in the lock hole 11 in a parallel movement manner.

(Third Embodiment) FIG. 8 shows a third embodiment of the present invention in which the unlocking mechanism is modified. The unlocking pawl 19 is formed in a block shape and is supported slidably by a screw 32. However, it is pushed out and biased by the unlock spring 20.

(Fourth Embodiment) FIGS. 9 and 10 show a fourth embodiment of the present invention in which the unlocking mechanism is modified. In this, the unlocking claw 19 is formed in a leaf shape in a plan view, and one end thereof is supported by a screw 33 so as to be horizontally swingable.

(Fifth Embodiment) FIG. 11 shows a fifth embodiment in which the lock mechanism of the present invention is incorporated in the protrusion type opening degree adjuster 3. In the opening degree adjuster 3 here, the case 13 of the lock mechanism and one restraint rod 5 are connected in a penetrating manner, and one end of the restraint rod 5 is connected to the wing 2 via the bracket 10.
The case 13 is rotatably supported by a bracket 9 mounted on the wing frame 1, and has a guide hole 3 for guiding the restraining rod 5.
A lock mechanism is incorporated above 4.

(Sixth Embodiment) FIG. 12 shows a sixth embodiment in which a lock mechanism of the present invention is incorporated in a protrusion type opening degree adjuster using a square pipe. The opening adjuster rotatably supports a guide case 36 on a wing frame 1 via a bracket 9, and a guide pipe 36 slidably supports a check rod 5 made of a square pipe. The lock mechanism described in the fourth embodiment is incorporated in. The lock mechanism fixes the lock pin 14 to the inner surface of the lower wall of the case 37 made of a rectangular tube so as not to rotate relative to the lock pin 14, and attaches the leaf-shaped unlocking claw 19 to the upper end of the lock pin 14 so that the case 37 and the guide case 36 are separated from each other. The lock spring 15 is arranged in the. Case 3
7 is supported by a guide case 36 so that it can be moved only up and down.
When the push-down operation is performed against, the lock pin 14 and the unlock claw 19 can be pulled out from the lock hole 11 and the locked state can be released. In each of the following examples, the same members as those in the first example are designated by the same reference numerals.

The lock mechanism of the present invention can be applied to an opening adjuster other than the above. For example, in an opening degree adjuster in which a horizontally long guide frame is provided along the wing frame 1 and a slide body guided by the guide frame is connected by a check rod 5, one of the guide frame and the slide body is provided. It may be implemented by providing a lock mechanism on the other side and a lock hole on the other side.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a lock mechanism.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a view on arrow B in FIG.

FIG. 4 is a plan view showing a usage example of an opening adjuster.

5 is a sectional view taken along line CC in FIG.

FIG. 6 is a vertical sectional view showing an operating state of the unlock mechanism.

FIG. 7 is a longitudinal sectional view showing a second embodiment of the lock mechanism.

FIG. 8 is a vertical sectional view showing a third embodiment of the lock mechanism.

FIG. 9 is a vertical cross-sectional view showing a fourth embodiment of the lock mechanism.

10 is a cross-sectional view taken along the line DD in FIG.

FIG. 11 is a partially cutaway front view showing a fifth embodiment in which a lock mechanism is applied to a protrusion type opening degree adjuster.

FIG. 12 is a vertical cross-sectional view showing a sixth embodiment in which the lock mechanism is applied to another protrusion type opening adjuster.

[Explanation of symbols]

 1 Wing Frame 2 Wing 3 Opening Adjuster 5 Check Rod 5A / 5B Rod 11 Lock Hole 13 Case 14 Lock Pin 15 Lock Spring 19 Unlock Claw 20 Unlock Spring

Claims (3)

[Claims] 1. A lock mechanism of an opening adjuster for automatically locking and fixing a check rod 5 provided between a wing 2 and a wing frame 1 each time the wing 2 opens a predetermined amount, the opening adjusting A lock pin 14 that selectively falls into and engages with a plurality of lock holes 11 provided in a member forming the container,
A lock spring 15 for urging the lock pin 14 toward the engagement posture side, a case 13 for accommodating the lock spring 15 and the lock pin 14, and an unlock mechanism provided for the lock pin 14 are included. In the case 13, the unlock mechanism is configured to slightly project from the engaging end of the lock pin 14 and
The unlocking claw 19 supported so as to be displaceable inward and outward in the radial direction with respect to the locking claw 19 and the unlocking spring 20 for biasing the unlocking claw 19 to move to the outside of the outline of the lock pin 14, A lock mechanism of an opening degree adjuster in which an unlocking pawl 19 is arranged on the pin peripheral surface on the lower side in the moving direction when closing and moving. 2. The restraining rod 5 is composed of a pair of rods 5A and 5B that are connected to each other in a telescopic manner. One rod 5A is equipped with a lock mechanism, and the other rod 5B is provided with a lock hole 11. The lock mechanism of the opening adjuster according to claim 1, which is formed. 3. A case 13 rotatably supported on the wing frame 1 and a check bar 5 having one end connected to the wing 2 are connected in a penetrating manner, and for the check bar 5 provided on the case 13. 2. The lock mechanism of the opening degree adjuster according to claim 1, wherein a lock mechanism is provided above the guide hole 34 and the lock hole 11 is formed in the restraining rod 5.