JPH051569Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a push-button flat handle device used for doors of power distribution boards, control boards, etc.

(Prior art) In the conventional push button type flat handle device disclosed in Publication of Utility Model Publication No. 55-22126, when the push button is slightly pressed when unlocking the door, the upper end of the push button and the lower end of the handle body The push button is rotated in the direction in which the engagement with the stepped surface of the front edge of the button is released, that is, in the retreat direction. Therefore, the handle body, which is released from the restraint by the push button, protrudes to an angular position where it can be gripped by the spring bias.

Furthermore, when the door is locked, if the handle body is pushed into the case against the spring bias after the door is closed, the back side of the lower end of the handle body presses the upper end protrusion of the push button. The button momentarily rotates in the retract direction to allow passage of the handle body. When the handle body is completely retracted, the push button is reversely rotated by the spring bias, and the upper end protrusion of the push button and the stepped surface of the handle body re-engage.

(Problem to be solved by the invention) However, in this conventional push button type flat handle device, the rotation angle of the push button in the retracting direction to allow the handle body to pass through is relatively small. If the handle body is accidentally pushed in the case retraction direction due to being hit by some object, the push button may rotate in the retraction direction and the handle body may be retracted into the case.

When the handle body is recessed into the case in this way, the stop plate pivotally attached to the back of the case is rotated by the actuating protrusion on the back of the upper end of the handle body to the locking position that protrudes greatly from the side of the case. It is being

If you accidentally close the door while this stop plate is in the locked position, the stop plate will collide with the fixed frame such as the box body, which may damage the fixed frame or damage the stop plate. Excessive stress will be applied to the pivot screw and guide screw, and the flat handle device may be damaged.

Therefore, an object of the present invention is to prevent the door from being closed with the stopper plate protruding to the locked position. It is an object of the present invention to provide a push-button flat handle device with safety ensuring means.

(Means for Solving the Problems) The gist of the present invention will be explained below using reference numerals in the attached drawings.
protrudes obliquely upward, the handle body 5 and the push button 1 are housed vertically adjacent to each other in the opening 4 of the case 3, and the upper end of the handle body 5 is pivotally connected to the case 3 by an orthogonal pivot 6; The handle body 5 is urged to rotate in the projecting direction by the spring 7, the tip of the arm 2 of the push button 1 is pivoted to the case 3 by the orthogonal pivot 8, and returned between the push button 1 and the case 3. A step surface 13 is provided on the front ridge of the lower end of the handle body 5 to which the upper end protrusion 12 of the push button 1 comes into contact, and a receiving part on the fixed frame side is provided with a spring 9 for biasing the rotation in the direction. 20
A stop plate 17 that engages and disengages by sliding is pivotally attached to the back of the case 3 with a pivot 19, and an actuation protrusion that is movably inserted into a driven hole 18 of the stop plate 17 and presses the edge of the driven hole 18. 21 protruding from the back surface of the proximal end of the handle body 5, a recess 14 or a convex portion 15 is provided at the lower end of the handle body 5 on the back side of the cross section 13, and the recess 14 Alternatively, when the convex portion 15 comes into contact with the upper end protrusion 12 of the push button 1, no rotational moment is applied to the push button 1 in the retracting direction.

(Function) When the push button 1 is pressed against the rotational bias of the spring 9, the push button 1 is rotated in a direction in which the upper end protruding edge 12 moves away from the step surface 13 on the front edge of the handle body 5, i.e., in the retreating direction. As a result, the handle body 5, which has been released from the constraint of the push button 1, projects to an angular position where it can be grasped by the rotational bias of the spring 7, but since there is frictional resistance between the stopper plate 17 and the receiving part 20 that is strong enough to overcome the rotational bias of the spring 7, the handle body 5 stops rotating at this angular position. At this stage, the operating projection 21, which has rotated freely downward within the passive hole 18 in FIG. 2,
is in contact with the edge surface of the passive hole 18, and the stopper plate 1
7 is in a protruding state in the locked position.

Therefore, when the handle main body 5 is further pulled out and rotated with a force that overcomes the frictional resistance between the stop metal plate 17 and the receiving part 20, the operating protrusion 21 of the handle main body 5 touches the edge surface of the passive hole 18 of the stop metal plate 17. In order to press it, the stop plate 17 rotates around the pivot screw 19 and comes to an unlocked position where it is separated from the receiving part 20 on the fixed frame side. Note that depending on the magnitude of the frictional force between the stop plate and the receiving part and whether or not a locking rod is attached to the stop plate, the stop plate may be damaged when the push button is first pressed. Immediately protrudes and rotates to the fully unlocked position. The door 16 is thus opened by further pulling the handle body 5. When the handle body 5 is released after opening the door 16, the handle body 5 is held at the most pulled-out position by the rotational bias of the spring 7, and the operating protrusion 21 of the handle body 5 holds the handle body 5 at the most pulled out position. The stop plate 17, which is pushed against the edge of the driven hole 18, is held in the unlocked position.

When the handle body 5 is pushed into the case 3 against the rotational bias of the spring 7 after the door 16 is closed, each flat part of the recess 14 or the convex part 15 provided on the back side of the lower end of the handle body 5 is pressed. Since the surface comes into contact with the upper end protrusion 12 of the push button 1, no rotational moment is applied to the push button 1 in the retracting direction.
Even if it is applied, the rotational moment will be extremely small.

Therefore, in order to pass through the handle body 5, it is necessary to forcibly rotate the push button 1 in the retracted direction with a fingertip, and push the handle body while holding the push button 1 in the retracted position.

(Embodiment) In the embodiment shown in FIGS. 1 to 3, a recess 14 is provided at the front end of the inclined surface 5a at the lower end of the handle body 5, and is set back one step. A partition wall portion 5b is formed in the shape of a protrusion between the stepped surface 13 and the partition wall portion 5b.

Further, in another embodiment shown in FIG.
5 is provided protrudingly.

In any case, the concave portion 14 and the convex portion 15 are formed in a shape and position such that when they come into contact with the upper end protrusion 12 of the push button 1, they do not impart a rotational moment to the push button 1 in the retracting direction.

The left and right sides of the push button 1 are provided with stop protrusions 11 that come into contact with the back edge 10 of the opening 4 of the case 3, so that the push button 1 is prevented from over-rotating by the rotational force of the spring 9. is prevented from doing so.

(Effect of the invention) As described above, in the present invention, when the push button 1 comes into contact with the upper end protrusion 12, the recess 14 and the protrusion 1 do not apply rotational moment to the push button 1 in the retracting direction.
5 is provided at the lower end of the handle body 5, the handle body 5 cannot be pushed into the case 3 unless an additional operation of forcibly rotating the push button in the retracting direction with a finger is performed. . That is, even if some object hits the handle body 5 and pushes the handle body 5 in the direction of recessing it into the case 3 while the door 16 is open, the object or another object hits the push button 1 and the push button is pressed. Unless the handle body 5 accidentally rotates in the retracting direction at the same time, it is impossible for the handle body 5 to sink into the case 3, and the stop plate 17 is retracted to the unlocked position. Precisely held. Only after the operator closes the door 16, consciously rotates the pushbutton 1 in the retraction direction, and then pushes the handle body 5 into the case 3, does the operating protrusion 21 of the handle body 5 engage with the stopper. Since the edge surface of the passive hole 18 of the plate 17 is pressed to cause the stop plate 17 to protrude to the locked position, the stoppage caused by closing the door 16 with the stop plate 17 still protruding to the locked position. Accidents that damage metal plates, fixed frames, etc. can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is a front view of the push-button flat handle device according to the first embodiment of the present invention in a locked state, FIG. 2 is a vertical sectional view of the flat handle device, and FIG. 3 is an unlocked flat handle device. It is a longitudinal cross-sectional view at the time, and the illustration of the stopper plate is omitted. FIG. 4 is a vertical cross-sectional view of a main part of a flat handle device according to a second embodiment of the present invention. 1...Push button, 2...Arm, 3...Case, 4...Opening, 5...Handle body, 6...
Pivot of the handle body, 7... Spring for urging rotation of the handle body, 8... Pivot of the push button, 9... Spring for urging rotation of the push button, 10... Back side of the edge of the opening, 11... Stop protrusion, 12...Lower end protrusion, 1
3... Step surface of front ridge, 14... Concavity, 15...
Convex portion, 16...Door, 17...Stopping plate, 18...
Passive hole, 19... Pivot screw, 20... Receiving part,
21... Operating protrusion.

Claims (1)

[Scope of utility model registration request] An arm 2 is provided protruding from the back surface of the push button 1, and the handle body 5 and the push button 1 are accommodated vertically adjacent to each other in the opening 4 of the case 3. The handle body 5 is urged to rotate in the protruding direction by a spring 7, and the tip of the arm 2 of the push button 1 is pivoted to the case 3 by an orthogonal pivot 8, so that the push button 1 and the case are A spring 9 for urging rotation in the return direction is interposed between the handle body 5 and a stepped surface 13 on which the upper end protrusion 12 of the push button 1 comes into contact with the front edge of the lower end of the handle body 5. A stopper plate 1 that engages and disengages by sliding against the receiver part 20 on the body side
7 is pivotally attached to the back of the case 3 by a pivot 19, and an operating protrusion 21 that is movably inserted into the driven hole 18 of the stopper plate 17 and presses the edge of the driven hole 18 is attached to the back surface of the upper end of the handle body 5. In the protruding push button type flat handle device, a concave portion 14 or a convex portion 1 is provided at the lower end of the handle body 5 on the back side of the cross section 13.
5 is provided, and the recess 14 or the protrusion 15 is the push button 1.
A push button type flat handle device characterized in that no rotational moment is applied to the push button 1 in the retracting direction when the push button 1 comes into contact with the front upper end projection 12 of the push button 1.