JP2943758B2 - Panel lock mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel provided on an exterior panel configured as a door for opening and closing an opening of a housing of various equipment, and used for locking the exterior panel to the housing in a closed state. Related to the lock mechanism.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, an exterior panel 101 which is hinged to an opening 102 of an electric equipment casing 100 and is configured as a door for opening and closing this opening is opened. For locking, a panel lock mechanism using a latch lock and a key lock has been proposed. FIGS. 5A and 5B show an example thereof, wherein FIG. 5A is a front view and FIG. 5B is a side view. Latch locks 1A and 1B are provided near the upper and lower sides of the exterior panel 101, respectively.
Each of the latch locks 1A and 1B is composed of a fixing piece 11 fixed to the exterior panel 101 and a latch piece 13 movable with respect to the fixing piece. When they are projected upward and downward, respectively, they are fitted into latch holes (not shown) provided at the upper edge and the lower edge of the housing 100 to be in a locked state. A key lock 3A is provided at a substantially central position on a line connecting the upper and lower latch locks 1A and 1B, and the upper and lower latch locks 1A and 1B are connected to the key lock 3A by wires 2 respectively.
A and 2B are used for connection. By rotating the key lock 3A with the key 31, tension is generated in each of the wires 2A and 2B, and the tension forces the latch pieces 13 of the upper and lower latch locks 1A and 1B to retreat. Then, the locked state can be released. Here, in the key lock 3A, the ends of the wires 2A and 2B are individually fixed to the lock plate 32 provided in a part thereof at the eccentric position by screws 37, and the key lock 3A
Is connected.

[0003]

In such a conventional panel lock mechanism, the wires 2A and 2B connected to the upper and lower latch locks 1A and 1B are individually screwed to the lock plate 32 of the key lock 3A. However, in this case, since the ends of the wires 2A and 2B are individually fixed by the screws 37, there is a problem that the assembling work is complicated and the workability is poor. Further, in order to enhance the operability of the key lock, it is preferable that the wires 2A and 2B connecting the key lock 3A and the respective latch locks 1A and 1B be stretched without loosening. It is necessary to perform an adjustment operation to bring 2B into a tension state with the same tension, and since this adjustment operation is performed on each of the wires 2A and 2B, this adjustment operation is also one of the factors that lower the workability. Further, when the key lock 3A is rotated, the wires 2A and 2B may come into contact with the lock plate 32. However, the corners of the lock plate 32 easily touch the wire, and the wire 2A is repeatedly operated. , 2B are damaged by the corners, and the wire strength is liable to be significantly degraded at this point.

[0004] It is an object of the present invention to provide a panel lock mechanism which can improve the workability of assembling, can easily adjust the wire tension, and prevent damage to the wires.

[0005]

According to the present invention, there is provided a panel lock mechanism comprising: a pair of latch locks provided on opposite sides of an exterior panel provided in a housing; a wire connecting these latch locks; A key lock that is provided at a central position in the length direction of the wire and that operates the latch lock via the wire when the wire is operated to rotate, and the key lock is disposed to face the radial direction. A rotary operation body including a pair of or more arc-shaped arc walls is provided, and the wire is radially inserted between the opposed arc walls, and an end of the arc wall when the key lock is rotated. The portion is configured to abut the wire. For example, the rotary operation body is formed of a circular plate and provided with a pair of semi-circular arc walls that are radially opposed along the periphery thereof, and at the end of the arc wall that abuts on the wire, A circular contact portion is formed toward the inner diameter direction. Further, it is preferable that a circular boss is provided at the center of the rotary operation body, and the wire is in contact with the peripheral surface of the circular boss so as to be inserted through the rotary operation body. Further, the wire is provided with an adjusting means for adjusting the tension of the wire between the latch locks at one position in the length direction.

[0006]

Next, embodiments of the present invention will be described with reference to the drawings. 1A and 1B are diagrams showing a locked state in an embodiment of a panel lock mechanism of the present invention, wherein FIG. 1A is a front view and FIG. 1B is a side view. In the exterior panel 101 of the electric device housing 100 as shown in FIG. 4, latch locks 1A and 1B are provided near the upper side and the lower side of the exterior panel 101, respectively. These latch locks 1A and 1B have the same configuration as the conventional configuration, and include a fixing piece 11 fixed to the exterior panel 101 with small screws 12, and a fixing piece 11 for the fixing piece 11.
Of the exterior panel 101
Latch which is inserted into latch holes (not shown) provided in the upper edge and the lower edge of the housing 100 when the upper panel and the lower panel are respectively moved upward and downward from the upper side or the lower side to lock the exterior panel. And a piece 13.

The latch pieces 11 of the upper and lower latch locks 1A and 1B are connected to each other by a single wire 2. In this embodiment, the lower end of the wire 2 is fixedly connected to the latch piece 13 of the lower latch lock 1B, but the upper end of the wire 2 is connected to the hole of the latch piece 13 of the upper latch lock 1A. It is inserted, and its folded end is connected to the middle of the wire 2 by the adjusting screw 21 to form a loop. Therefore, the tension of the wire 2 can be adjusted by changing the loop length using the adjusting screw 21. At a substantially central position along the extension direction of the wire 2, a key lock 3 for operating the latch locks 1A and 1B when rotated is provided. The central part is inserted.

FIG. 2 is a perspective view showing the structure of the key lock 3. The key lock 3 includes a lock plate 32 that is rotated by a key 31 that is fitted from the outer surface of the exterior panel 101, and a rotary operation body 33 that is integrated with the lock plate 32. This rotary operation body 3
Reference numeral 3 denotes a circular plate portion, a pair of semi-circular arc walls 35 formed along the periphery of the circular plate portion 34 and arranged to face each other in the radial direction, and a central portion of the circular plate portion 34. And a boss portion 32a of the same shape provided on the lock plate 32 is fitted into a non-circular fitting hole 36a provided at a center position of the circular boss 36, and By being fixed with the screw 37, the lock plate 32 is integrally rotated.
The arc wall 35 of the rotary operation body 33 projects in the radial direction at one end along the circumferential direction, that is, the end on the side where the key lock 3 is rotated when unlocked. A small circular contact portion 35a is integrally formed. The wire 2 is inserted in the radial direction of the rotary operation body 33 through the gap between the arc walls 35,
At this time, the wire is in contact with the peripheral surface of the circular boss 36.

According to this configuration, in the state shown in FIG. 1, the latch pieces 13 of the respective latch locks 1A and 1B are in the protruded positions due to the rigidity of the wire 2, and the housing 10
It is inserted into the 0 side and is in a locked state. On the other hand, when unlocking the upper and lower latch locks 1A and 1B, the key 31
To rotate the key lock 3 in the counterclockwise direction in FIG. FIG. 3 is a front view showing the rotated state. Since the rotation operation body 33 is also integrally rotated by the rotation of the lock plate 32 of the key lock 3, the rotation operation body 33 is provided at each end of the arc wall 35 at a required rotation position. The circular contact portions 35a are respectively contacted from opposite sides of the wire 2, and when further rotated, the circular contact portions 35a forcibly move the wire 2 in a direction intersecting the wire extending direction. . Thereby, the tension of the wire 2 is increased, and accordingly, the latch pieces 13 of the respective latch locks 1A, 1B are moved in the retreating direction, and as a result, the respective latch locks 1A, 1B are unlocked.

As described above, in this exterior panel lock mechanism, the arc wall 35 of the rotary operation body 33 is in contact with the wire 2 on the circumferential surface of the circular contact portion 35a. The wire 2 is not contacted at an acute angle with respect to the wire 2, and the wire 2 is not damaged at the contact portion even by the repetitive operation, and the life can be extended. In addition, since the wire 2 is in contact with the peripheral surface of the circular boss 36 and is curved in an arc shape at the center position of the rotary operation body 33, the wire 2 is bent by the circular contact portion 35 a of the arc wall 35. Even in this case, the wires 2 are stretched in the tangential directions of the circular contact portion 35a and the circular boss 36, thereby effectively preventing the damage to the wires 2 described above.

When the key lock is locked, the wire 2 is inserted through the gap between the arc-shaped walls 35 of the rotary operation body 33 and extends along the peripheral surface of the circular boss 36. An appropriate tension is applied by the curvature of the peripheral surface of the boss 36, and the tension is applied to the wire 2 by this tension.
Is closely contacted with the peripheral surface of the circular boss 36. This prevents the wire 2 from being loosened and coming off the rotary operation body 33. Further, the tension of the wire 2 itself may be adjusted with the adjusting screw 21 provided at one place, and the adjustment work is also simplified. Further, in this case, the tension of the entire wire 2 can be adjusted by one adjustment, and the operation of each of the upper and lower latch locks due to the difference in the tension of each wire as in the related art is caused. Not even.

In the above embodiment, the rotary operation body 33 is used.
Shows an example in which a pair of arc walls 35 are provided at positions where the circumference is divided into two parts, but arc walls are respectively provided at positions where the circumference is divided into four parts, and a wire is inserted into an arbitrary gap between these arc walls. By inserting the wire, the wire tension may be adjusted over a wide range. In the above embodiment, the latch lock is unlocked and locked by using the wire tension. However, the latch lock is provided with a spring means for urging the latch piece in the projecting direction. You may comprise so that locking by a latch piece may be performed by the spring force of a means. In this case, a flexible member can be adopted for the wire.

[0013]

As described above, the present invention provides a key lock for operating a pair of latch locks via a wire.
A rotary operation body having a pair of or more arc-shaped arc walls arranged in a radially opposed manner is provided, and the wire is radially inserted between the opposed arced walls, and a key lock is rotated. Sometimes the end of the arc wall is configured to abut against the wire, so it is not necessary to connect the wires individually to each latch lock and connect them individually to the key lock. Work can be simplified. Further, since the circular contact portion is in contact with the wire, damage to the wire can be reduced, and the life can be extended. Further, since the wire is brought into contact with the peripheral surface of the circular boss in the key lock and a required tension is applied, the wire does not become loose, and the wire is prevented from coming off the key lock. Further, the tension adjustment of the wire need only be adjusted by one adjusting means, and the tension can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a front view and a side view of an embodiment of a panel lock mechanism of the present invention.

FIG. 2 is a partially exploded perspective view showing a schematic configuration of a key lock.

FIG. 3 is a front view for explaining the operation of the panel lock mechanism of FIG. 1;

FIG. 4 is a schematic external view of an electric device housing to which the present invention is applied.

FIG. 5 is a front view and a side view of an example of a conventional panel lock mechanism.

[Description of Signs] 1A, 1B Latch lock 2 Wire 3 Key lock 21 Adjustment screw 31 Key 32 Lock plate 33 Rotary operation body 35 Arc wall 35a Circular contact portion 36 Circular boss 37 Screw

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) E05B 63/14 E05C 9/04 E05C 9/12 E05C 9/16 E05C 9/20 H05K 5/03

Claims (4)

(57) [Claims] 1. A pair of latch locks provided on opposite sides of an exterior panel provided on a housing, a wire connecting these latch locks, and a wire provided at a central position in a longitudinal direction of the wire. And a key lock for operating the latch lock via the wire when rotated, wherein the key lock includes:
A rotary operation body having a pair of or more arc-shaped arc walls arranged in a radially opposed manner is provided, and the wire is radially inserted between the opposed arced walls, and a key lock is rotated. A panel lock mechanism wherein the end of the arc wall is sometimes brought into contact with the wire. 2. The rotary operation body is formed of a circular plate, and provided with a pair of semi-circular arc walls that are radially opposed along the periphery thereof, and the rotation wall of the arc wall that is in contact with the wire is provided. 2. The panel lock mechanism according to claim 1, wherein a circular contact portion protruding in the inner diameter direction is formed at the end. 3. The panel lock mechanism according to claim 2, wherein a circular boss is provided at a central portion of the rotary operation body, and the wire is inserted into the rotary operation body in contact with a peripheral surface of the circular boss. 4. The panel lock mechanism according to claim 1, wherein said wire is provided with an adjusting means for adjusting a tension of the wire between the latch locks at one position in a length direction thereof.