JPH0213709B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a planar handle device in which a handle for rotating a latch plate is retracted into a case when not in use.

As exemplified in Utility Model Publication No. 45-28779,
In this type of flat handle device, the case and handle are made of zinc die-casting or aluminum die-casting because it is economical to manufacture, while the latch plate is made of iron plate to ensure strength as a locking member. Press molded. Because of this large difference in material hardness between the latch plate and the handle, as the latch plate is repeatedly rotated using the operating protrusion on the handle, the edge of the receiving hole on the latch plate causes the operating protrusion to The abrasion formed on the latch plate gradually grows, and when it reaches a certain stage, the edge of the receiving hole digs into the deepened abrasion groove and the latch plate becomes unable to move. If you forcefully push and pull the handle to forcefully rotate the latch plate, excessive bending stress will be applied to the handle body as the arm of the lever, causing the operating protrusion to break at the abrasion groove. It became a matter of fact.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a planar handle device that is free from breakage of the operating protrusion of the handle and has excellent durability.

The following is an explanation based on the drawings. The gist of the flat handle device of the present invention is that the handle 2
The cylindrical body 8 is rotatably fitted onto the operating protrusion 6 of the cylindrical body 8.

In the illustrated embodiment, a handle 2 that can freely move in and out of the case 1 is provided with a transverse shaft hole 9 at its base end on the operating protrusion 6 side. Transverse mounting holes 12 and 13 provided
It is pivotally connected to the case 1 by a pin-shaped first pivot shaft 3 inserted into the transverse shaft hole 9. The latch plate 4 arranged on the back side of the case 1 is inserted into the case 1 through a shaft hole 14 bored adjacent to the receiving hole 7.
A screw-shaped second pivot shaft 5 screwed into the back wall portion 15 of the
It is pivotally attached to case 1 by. Another screw 16 screwed into the back wall portion 15 of the case is located in the receiving hole 7, and the head of the screw 16 serves as a guide means for preventing the latch plate 4 from floating when it is rotated.

The operating protrusion 6 is a round bar body having an enlarged head 6a, and the operating protrusion 6 is inserted into an inclined receiving hole 31 formed on the back surface of the base end of the handle 2.
It is attached to the handle 2 to prevent accidental movement such as slipping out or wobbling by means of a mounting pin 33 that is inserted and fixed into a transverse mounting hole 30 at the base end and a transverse through hole 32 at the tip of the operating protrusion 6. The cylindrical body 8 fitted onto the operating protrusion 6 is prevented from being removed from the operating protrusion 6 by the enlarged head 6a.

A push button receiving hole 18 is provided in the case 1 adjacent to the handle accommodating recess 17, and a push button 20 which is biased to return by a compression coil spring 19 is accommodated in this hole. A driving protrusion 21 protruding from the outer surface of the push button 20 is in contact with a passive protrusion 22 protruding from the base end of the handle 2 . The bent end of the curved leaf spring 25 is inserted into the receiving groove 23 on the inner bottom surface 27 of the case 2 and the receiving groove 24 on the back surface of the tip end of the handle 2.

In this planar handle device, when the handle 2 is recessed into the case 1 as shown in FIGS. 1 and 3, the curved leaf spring 25 moves the handle 2 into the third Since the handle 2 is biased to rotate in the clockwise direction in the figure, the tip 26 of the handle 2 comes into contact with the inner bottom surface 27 of the case and is held in the retracted position. Next, push button 2
0, the driving protrusion 21 pushes the passive protrusion 22 of the handle 2, so the handle 2 moves to the first position.
It rotates counterclockwise in FIG. 3 about the pivot 3. When the handle 2 is rotated to a certain stage, the biasing direction of the curved leaf spring 25 is reversed.
From then on, the handle 2 is assisted by the leaf spring 25 and will fly out to a position where it can be grasped.

Then, when the handle 2 is grasped and pulled out further, the cylindrical body 8 fitted onto the operating protrusion
rotates and slides into contact with the hole edge 7a of the receiving hole 7 of the latch plate 4, and in order to push this, the latch plate 4 rotates clockwise around the second pivot 5 in FIG. The part 4a is a receiving part 28 provided on the housing side.
escape more. Thus, the door 29 to which the case 1 of the present device is fixed is unlocked from the housing, and is opened by further pulling the handle 2. Next, when the door 29 is closed and the handle 2 is pushed into the case 1, the cylindrical body 8 rotates and slides into contact with the hole edge 7b on the other side of the receiving hole 7, and in order to push this, the latch The plate 4 is connected to the second pivot 5 in FIG.
It rotates counterclockwise around , and its tip 4
a engages with the receiving portion 28. By that,
The door 29 will be locked to the housing again.

As described above, in the planar handle device of the present invention, when the latch plate 4 rotates forward and backward between the unlocked and locked positions as the handle 2 rotates in and out of the case 1, the hole edge of the receiving hole 7 of the latch plate 4 Since the cylindrical body 8 fitted onto the operating protrusion 6 slides into the parts 7a and 7b while rotating, the hole edges 7a and 7b form deep scratch grooves on the outer peripheral surface of the cylindrical body 8, and the cylindrical body 8 and the latch plate 4 do not bite. Therefore, even if the device is used repeatedly over a long period of time, the cylindrical body 8 or the operating protrusion 6 will not break or break, and the device of the present invention has excellent durability.

Note that the present invention can be implemented in various ways, and as shown in FIG. A retaining ring body 35 such as the like may be fitted to prevent the cylindrical body 8 from coming off, or a retaining pin 36 may be inserted into the tip cross hole 37 instead of the retaining ring body as shown in FIG. It may be fixed. Further, in the embodiments shown in FIGS. 1 to 4, the enlarged head 6a can be replaced with a retaining ring, a retaining pin, or a screw. Furthermore, as shown in FIG. 7, a bearing means 38 such as a roller bearing is interposed between the operating protrusion 6 and the cylindrical body 8, so that the cylindrical body 8 with the operating protrusion 6 as the central axis By making the rotation more smooth, damage to the outer peripheral surface of the cylindrical body 8 by the edge of the latch plate receiving hole 7 can be more accurately prevented. Further, it is more effective to make the cylindrical body 8 out of a material more rigid than the latch plate 4 in order to prevent this damage. Furthermore, the operating protrusion can also be screwed and fixed to the back surface of the proximal end of the handle.

[Brief explanation of drawings]

1 to 4 show an embodiment of the present invention,
Figures 1 and 2 are front and rear views of the flat handle device, Figure 3 is a sectional view taken along line A-A' in Figure 1, and Figure 4 is
The figure is a perspective view of the proximal end portion of the handle before assembly.
5, 6 and 7 are longitudinal sectional views of the proximal end portion of the handle in other embodiments of the present invention, respectively. DESCRIPTION OF SYMBOLS 1... Case, 2... Handle, 3... First pivot, 4... Latch plate, 5... Second pivot, 6... Operating protrusion, 7... Receiving hole, 8... Cylindrical body, 20 ...Push button, 25...Curved leaf spring, 38...Bearing means.

Claims (1)

[Claims] 1. A handle 2 that can freely extend and retract from the case 1 is pivotally connected to the case 1 by a first pivot 3, a latch plate 4 arranged on the back side of the case 1 is pivotally connected to the case 1 by a second pivot 5, In a planar handle device in which the latch plate 4 is rotated by engaging the operation protrusion 6 provided on the handle 2 with the receiving hole 7 of the latch plate 4 and pulling out the handle 2 from the case 1,
A flat handle device characterized in that a cylindrical body 8 is rotatably fitted onto an operating protrusion 6.