JPH0343427B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flat handle device in which a handle for rotating a stop plate is held recessed in a case when not in use.

[Prior Art] In the flat handle device disclosed in Japanese Utility Model Publication No. 45-28779, the base end of the handle, which rotates and protrudes in the front direction of the case, is pivoted to the left and right side walls of the case by a left-right pivot. A stop plate that rotates along the back wall of the case is pivotally attached to the back wall by a pivot in the front and back direction, and a spring inserted between the handle and the case causes the handle to be moved in the protruding direction and retracting direction. The operating protrusion integrally provided at the base end of the handle is inserted into the passive hole 7 provided in the stop plate 4, and when the handle is pulled out, the side surface of the operating protrusion touches the edge of the passive hole. The stop plate is rotated by pressing the part.

In this conventional device, the case and handle are molded from zinc die-casting or aluminum die-casting because it is economically efficient in manufacturing, while the stopper plate is press-formed from an iron plate to ensure strength as a locking member. There is a large difference in the hardness of the materials used for the stop plate and the handle.

Therefore, as the stop plate is rotated repeatedly by pressing the operating protrusion of the handle, the scratches on the side of the operating protrusion caused by the edge of the passive hole in the stop plate gradually grow. If this exceeds a certain stage, the hole edge of the passive hole will dig into the deeply V-groove scratched portion, and the stop plate will no longer rotate.

In this situation, if you forcefully pull out or push in the handle to forcefully rotate the stop plate, excessive bending stress will be applied to the operating protrusion using the main body of the handle as the arm of the lever. As a result, stress was concentrated on the scratched portion, resulting in breakage of the operating protrusion.

[Problems to be Solved by the Invention] Accordingly, an object of the present invention is to provide a flat handle device that does not cause breakage of the operating protrusion and has excellent durability.

[Means for Solving the Problems] As explained below using reference numerals in the attached drawings, in the flat handle device of the present invention, the proximal end of the handle 2 that rotates and protrudes in the front direction of the case 1 is rotated in the left and right direction. The left and right side walls 1 of the case 1 are connected by the pivot 3.
A stop plate 4, which is pivotally attached to the rear wall 15 of the case 1 and rotates along the rear wall 15 of the case 1, is pivotally attached to the rear wall 15 by a pivot shaft 5 in the front-rear direction.

A round rod-shaped operating protrusion 6 that is rotatable around the longitudinal axis is provided protruding from the base end of the handle 2, and the operating protrusion 6 is inserted into a driven hole 7 provided in the stop plate 4, and the handle 2 is rotated. At the time of drawing out, the circumferential side of the operation protrusion 6 presses the hole edges 7a, 7b of the driven hole 7.

[Function] The case 1 is fixed, for example, to the door 29 of a switchboard storage box, and when the handle 2 is recessed into the case 1 as shown in FIG. The stop plate 4, which is close to the hole edge 7b and arranged at right angles to the vertically elongated case 1, is
The tip portion 4a engages with a receiving portion 28 provided on the box body side, thereby locking the door 29 to the box body.

In this locked state, when the handle 2 is pulled out from the case 1 and rotated around the pivot 3, the circumferential side of the round bar-shaped operating protrusion 6 presses the hole edge 7a of the passive hole 7, so that the stop plate 4 In the figure, the stopper plate 4 rotates clockwise around the pivot 5, and the tip end 4a of the stopper plate 4 separates from the receiver part 28. The door 29, which has been unlocked to the box body in this manner, is opened by further pulling out and rotating the handle 2.

When the door 29 is closed and the handle 2 is pushed into the case 1, the circumferential side of the operating protrusion 6 presses against the hole edge 7b on the other side of the passive hole 7, so that the stop plate 4 is moved as shown in FIG. The door 29 is relocked to the box body by rotating counterclockwise about the pivot 5 and engaging the tip 4a of the stop plate 4 with the receiving part 28.

In both the rotation of the stop plate 4 in the unlocking direction and the locking direction, the round rod-shaped operating protrusion 6 slides against the hole edges 7a and 7b of the passive hole 7 while rotating around the longitudinal axis. Rotate to. In other words, the operating protrusion 6
Since most of the frictional force acting between the hole edges 7a and 7b is consumed as a force for rotating the operating protrusion 6, the degree of scratching of the operating protrusion 6 is significantly reduced.

[Embodiment] In the embodiment shown in FIGS. 1 to 4, the pivot 3 for pivotally attaching the handle 2 to the case 1 so as to be freely retractable is in the form of a pin, and is attached to the mounting holes in the left and right side walls 10 and 11 of the case 1. 12, 13 and the shaft hole 9 at the base end of the handle 2
is inserted into. A pivot 5 for pivotally connecting the stop plate 4 to the case 1 is in the form of a screw, and is screwed into the back wall 15 of the case 1 through a shaft hole 14 adjacent to the passive hole 7. Another screw 16 screwed into the back wall 15 of the case 1 is located in the passive hole 7, and the head of the screw 16 serves as a guide means to prevent the stopper plate 4 from floating when it rotates. There is.

A circular support hole 31 is obliquely formed at the base end of the handle 2, and the operating protrusion 6, which has an annular receiving groove 30 on the outer periphery of the base end, is rotatably inserted into the support hole 31. ing. A mounting hole 32 is formed at the base end of the handle 2 and is perpendicular to the support hole 31. By engaging the tip of the retaining pin 8 inserted and fixed into the mounting hole 32 with the annular receiving groove 30, , the operation protrusion 6 is prevented from being removed from the support hole 31.

The case 1 is provided with a push button receiving hole 18 adjacent to the handle receiving recess 17, and the push button 20, which is biased to return by a compression coil spring 19, is accommodated in the receiving hole 18. A driving protrusion 21 provided on the side surface of the push button 20 is in contact with a passive protrusion 22 provided at the base end of the handle 2.

A curved leaf spring 25 is provided which biases the handle 2 to rotate in the protruding direction and the retracting direction, and one bent end of the curved leaf spring 25 is inserted into the receiving groove 23 provided in the inner bottom surface 27 of the case 2, and the curved leaf spring 25 is inserted into the receiving groove 23 provided in the inner bottom surface 27 of the case 2. The other bent end of the leaf spring 25 is attached to the base 2 of the handle 2.
It is inserted in 4.

When the handle 2 is recessed into the case 1 as shown in FIG. 1, the curved leaf spring 25 biases the handle 2 to rotate in the clockwise direction around the pivot 3 in FIG. Handle 2 is tip 2
6 is held in the retracted position by abutting against the inner bottom surface 27 of the case.

When the pushbutton 20 is pushed in and the drive protrusion 21 is pressed against the passive protrusion 22 of the handle 2, the handle 2 rotates counterclockwise about the pivot 3 in FIG. When the handle 2 is rotated to a certain stage, the biasing direction of the curved leaf spring 25 is reversed, so that the handle 2 is rotated vigorously and protruded to the grippable position.

Note that the present invention can be implemented in various ways, and as shown in FIG. Then, the rotation of the operating protrusion 6 is performed even more smoothly, and the hole edge 7a of the passive hole 7,
Scratches on the circumferential side surface of the operating protrusion 6 caused by the operation protrusion 6 are more accurately prevented.

Further, as shown in FIG. 6, a support hole 31 having a large diameter at the front end is provided through the handle 2, and the enlarged head 6a of the operating protrusion 6 is brought into contact with the stepped shoulder surface of the support hole 31. It is also possible to prevent the operating protrusion 6 from being removed by an E-shaped ring or a C-shaped ring 36 fitted in the annular receiving groove 35 in the middle of the operating protrusion 6. In this embodiment, the pivot shaft 3 does not pass through the handle 2 in the left-right direction, but extends between the base end of the operating protrusion 6 and the left and right sides.
This book is used.

In the embodiment shown in FIG. 7, only one pivot 3 is used, which completely traverses the handle 2 at a location offset from the proximal end of the operating barb 6.

[Effects of the Invention] As described above, in the planar handle device of the present invention, when the handle 2 is pulled out from the case 1 and rotated or inserted into the case 1 and rotated, the operating protrusion 6 moves into the passive hole 7.
The stop plate 4 is rotated to the unlocked position or the locked position by pressing the hole edges 7a and 7b of the handle. 2, the operating protrusion 6 rotates while slidingly contacting the hole edges 7a, 7b of the driven hole 7 on the circumferential side.
Deep scratch grooves are formed on the circumferential side of the operating protrusion 6 to prevent the operating protrusion 6 from biting into the stopper plate 4. Therefore, even if it is used repeatedly over a long period of time, there will be no accident of breakage of the operation protrusion 6, and a highly durable flat handle device can be obtained.

[Brief explanation of drawings]

FIG. 1 is a front view of a flat handle device according to an embodiment of the present invention in a locked state, FIG. 2 is a rear view of the flat handle device, and FIG. 3 is a line A-A′ in FIG. It is a line sectional view, and FIG. 4 is an exploded perspective view of the handle base end portion and the operating protrusion. FIG. 5 is a longitudinal sectional view of the proximal end portion of the handle in another embodiment of the present invention. FIG. 6 is a longitudinal sectional view of the proximal end portion of the handle in still another embodiment of the present invention. FIG. 7 is a longitudinal sectional view of the proximal end portion of the handle in another embodiment of the present invention. 1... Case, 2... Handle, 3... Left and right pivot, 4... Stop plate, 5... Front and back pivot, 6... Operating protrusion, 7... Passive hole, 8... Retaining pin, 20... Push button, 25...Curved leaf spring, 34...Bearing means, 3
6...Retaining ring.

Claims (1)

[Claims] 1. The base end of the handle 2, which rotates and projects in the front direction of the case 1, is attached to the case 1 by means of a left-right pivot 3.
A stop plate 4, which is pivotally attached to the left and right side walls 10, 11 of the case 1 and rotates along the back wall 15 of the case 1, is pivoted to the back wall 15 by a longitudinal pivot 5, and the longitudinal axis A round bar-shaped operating protrusion 6 that can be rotated around the handle 2 is provided protruding from the base end of the handle 2, and the operating protrusion 6 is inserted into a passive hole 7 provided in the stop plate 4, and is operated when the handle 2 is pulled out. A flat handle device that presses the hole edges 7a and 7b of the passive hole 7 with the circumferential side of the protrusion 6.