JP3247868B2 - Handle 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 handle mechanism which is attached to an opening / closing member such as a door and has a locking function.

[0002]

2. Description of the Related Art Doors and the like are locked in a state where the door is closed by a handle mechanism having a lock function.

FIGS. 4 and 5 show a conventional structure of a handle mechanism 80 of this type. A resin housing 88 is attached to a door 84 that is rotatably supported by the device. A handle 86 is pivotally supported by the housing 88 via a pin 90 so that the handle 86 can be rotated from the front side of the door 84.

A lock portion 92 is provided on the back side of the handle 86 so as to penetrate the housing 88 and protrude to the back side of the door 84, and can be locked to a lock pin 94 on the device side.

On the other hand, a notch 8 is provided at the bottom of the housing 88.
8A is formed, and a projecting piece 96 is provided by pushing up a portion surrounded by the notch 88A from the back surface. The projecting piece 96 presses the handle 86 in a direction in which the lock portion 92 rotates in the direction of arrow C by the urging force.

At this time, even when the projecting piece 98 formed on the lock portion 92 abuts against the bottom of the housing 88 and the door 84 is opened, the lock portion 92 is prevented from further rotating in the direction of arrow C. In the locked position.

Accordingly, the inclined surface 92A formed at the tip of the lock portion 92 is opposed to the urging force of the projecting piece 96 only by rotating the door 84 to the device side without operating the handle 86. The lock portion 92 is rotated in the direction of arrow D. The recess 95 formed in the lock portion 92 is
When the number reaches 4, the lock portion 92 is locked by the lock pin 94, and the door 84 is locked in the closed state.

When the door 84 is opened, the handle 86 is pushed against the pin 90 (FIG. 4) against the urging force of the projecting piece 96.
When the rotation is made in the direction of arrow D, the locking portion 92
Is separated from the lock pin 94, and the door 84 can be opened.

In such a configuration, since the protruding piece 96 is formed integrally with the housing 88 made of resin, the labor for assembling can be omitted, and the cost can be reduced by reducing the number of working steps.

However, the projecting piece 96 to which a stress is always applied due to its structure is made of resin, so that the urging force is reduced by creep, and the locked state may be released carelessly. Further, the urging force of the projecting piece 96 may decrease due to thermal deformation.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a handle mechanism which has a small change with time due to creep and has a lock function which does not cause thermal deformation.

[0012]

According to the first aspect of the present invention, a rectangular hole is formed in the opening / closing member which is supported by the device so as to be openable / closable, and a frame portion is attached to the rectangular hole. A claw protrudes from the side wall of the frame, and is elastically deformed and locked in the rectangular hole, thereby fixing the frame in the rectangular hole.

A bearing hole is formed in a side wall of the frame portion, and a shaft portion of a lever inserted through an opening formed in the bottom is pivotally supported in the bearing hole so that the lever can rotate. It is pivoted. The lever is provided with a handle, and when the handle is operated, the lever rotates.

Further, a metal coil spring is disposed between the frame portion and the handle, and a concave portion formed on the tip end side of the lever is locked at a lock position where it is locked by a lock pin provided on the device side. Bias the handle in the direction.
Further, the lever is in contact with the edge of the opening, and the posture is maintained in the locked position even when the opening / closing member is in the open state.

With this configuration, when the opening and closing member is closed, the concave portion of the lever is locked by the lock pin, and the opening and closing member is locked in the closed state.

Further, by using a metal coil spring, a change with time due to creep is small, and a lock function can be maintained without causing thermal deformation.

To release the lock, the handle may be operated to separate the recess from the lock pin.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A handle mechanism according to this embodiment will be described.

As shown in FIGS. 1 to 3, an opening / closing door 16 is rotatably supported by a device via a hinge (not shown).
It can be opened and closed. The opening / closing door 16 is formed with a rectangular hole 16A at a position away from the hinge, and the handle mechanism 10 having a lock function is formed in the rectangular hole 16A.
Is attached.

The handle mechanism 10 includes a box-shaped housing 12 and a rectangular plate-shaped handle 14. A flange 26 projects at a right angle from the tip of the side wall 12B of the housing 12, and two claw portions 28 are formed on the side wall 12B so as to protrude outward.

These claws 28 are in the form of cantilever arms, and when the housing 12 is inserted into the rectangular holes 16A of the opening / closing door 16, they temporarily elastically deform inward and pass through the rectangular holes 16A. After the passage, the claw 28 recovers its shape, and the claw 28 and the flange 26 clamp the periphery of the rectangular hole 16 </ b> A to mount the housing 12 to the door 16.

A hole 30 is formed between the two claws 28, and a shaft 31 of a pair of levers 32 projecting from the back surface of the handle 14 is inserted into the hole 30. The lever 32 is pivotally supported so as to be rotatable.

On the other hand, an opening 20 is formed in the bottom 12 A of the housing 12, and the lever 32 is inserted through the opening 20 and comes into contact with the edge of the opening 20 so that the lever 32 is moved.
Is suppressed.

A hole 18 (see FIG. 1) is formed above the reference line L (rotation center axis) shown in FIG. Is provided with a cross-shaped stopper 18A.

Further, the ribs 22 extend from the periphery of the hole 18.
(In this embodiment, four locations are provided at regular intervals in the circumferential direction), and one end of a metal coil spring 24 is inserted inside the rib 22.

On the other hand, as shown in FIG. 2, a cross-shaped holding member 42 protrudes from the back surface of the handle 14 above the reference line L. The other end of the coil spring 24 mounted on the housing 12 is inserted into the holder 42.
Therefore, the handle 14 is pressed by the urging force of the coil spring 24, and the lever 32 rotates in the direction of arrow A about the shaft 31.

The coil spring 24 is provided with a rib 22
Also, since the lever 32 is mounted on the holding member 42, there is no deviation even if the lever 32 rotates. Further, by using the metal coil spring 24, there is little change over time due to creep, and no thermal deformation occurs, so that the spring force can be maintained. Further, since the coil spring 24 is only inserted inside the rib 22, the number of working steps does not increase.

On the other hand, a lock pin 38 is provided on the device side, and a concave portion 34 is formed in the lever 32.
The concave portion 34 is formed in a direction in which the concave portion 34 is locked by the lock pin 38 when the handle 14 rotates in the direction of arrow A.

The lever 32 abuts on the edge of the opening 20 so that the lever 3 can move even when the door 16 is open.
2 is held in the locked position so as not to further rotate in the direction of arrow A.

On the other hand, an inclined surface 32A is formed from the edge of the concave portion 34 to the tip of the lever 32.
6 is closed, the inclined surface 32A is
, And rotates the lever 32 in the direction of arrow B against the urging force of the coil spring 24. When the recess 34 reaches the lock pin 38, the lever 32 rotates in the direction A, and the recess 34 is locked by the lock pin 38.

Thus, the door 1 can be rotated only by rotating the door 16 toward the device without operating the handle 14.
6 is locked in the closed state.

On the other hand, when a hand is inserted between the housing 12 and the handle 14 and the end 14A of the handle 14 is pulled (in the direction in which the door is opened), the lever 32 rotates in the direction of arrow B, and the locked state is released. You. For this reason, there is no fear that the lock function may be damaged by forcibly pulling the door 16 before the locked state is released.

On the other hand, the two levers 32 are provided with ribs 44 on the reference line L. When the levers 32 are rotated, the coil springs 24 are erroneously caught by the coil springs 24 or the like. It does not come off from the ribs 22 and the holder 42.

Next, a method of attaching the handle mechanism according to the present embodiment and a method of opening and closing the door will be described.

First, one end of the coil spring 24 is mounted inside the rib 22 of the housing 12. Next, rib 2
The orientation of the handle 14 is determined so that the holder 2 and the holder 42 of the handle 14 face each other.

Then, the coil spring 2 is
4 while inserting the other end thereof into the opening 2 of the housing 12.
0, the lever 32 is inserted through the
Into the hole 30. Thus, the lever 32 is rotatably supported by the housing 12, and the handle 14 is mounted on the housing 12.

At this time, the handle 14 is pressed by the urging force of the coil spring 24, and the lever 32 comes into contact with the edge of the opening 20 and is held in the locked position.

Next, the housing 12 is inserted into the rectangular hole 16A from the front side of the opening / closing door 16 so that the concave portion 34 faces upward.

Then, the housing 12 is pressed and the claw 2 is pressed.
8 is elastically deformed, the housing 12 is pushed in until the flange 26 abuts on the door 16, and the housing 12 is mounted on the door 16.

On the other hand, when the door 16 is closed, the inclined surface 32 A of the lever 32 comes into contact with the lock pin 38 and resists the urging force of the coil spring 24 simply by rotating the door 16 toward the device. To rotate the lever 32 in the direction of arrow B. When the concave portion 34 reaches the lock pin 38, the lever 32 rotates in the direction A, the concave portion 34 is locked by the lock pin 38, and the door 16 is closed.

When the door 16 is opened, a hand is put between the housing 12 and the handle 14 and the end 14A of the handle 14 is turned in the direction of arrow B. And
When the lever 32 comes into contact with the edge of the opening 20, the recess 34
Is separated from the lock pin 38, and the door 16 is opened.

[0042]

According to the present invention having the above-described structure, the change with time due to creep is small, and the lock function can be maintained without causing thermal deformation.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a handle mechanism according to the embodiment.

FIG. 2 is a sectional view showing a handle mechanism according to the embodiment.

FIG. 3 is a sectional view showing a handle mechanism according to the embodiment.

FIG. 4 is an exploded perspective view showing a conventional handle mechanism.

FIG. 5 is a sectional view showing a conventional handle mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Housing (frame part) 14 Handle 16A Rectangular hole 20 Opening 24 Coil spring 28 Claw part 30 Hole part (bearing hole) 32 Lever 34 Recess

Claims (1)

(57) [Claims] 1. A handle mechanism for locking in a closed state an opening / closing member supported to be openable and closable by a device, comprising: a rectangular hole formed in the opening / closing member; a frame portion attached to the rectangular hole; An opening formed in a bottom portion, a claw projecting from a side wall of the frame portion and elastically deformed and locked in the rectangular hole; a bearing hole formed in a side wall of the frame portion; A lever provided with a shaft portion that is inserted into the portion and is supported by the bearing hole, and that comes into contact with an edge of the opening to maintain the posture of the lock position; and a lever that is formed on the tip side of the lever and provided on the device side. A recess provided to be locked by the lock pin, a handle provided on the lever for rotating the lever, and a lock position disposed between the frame portion and the handle so that the recess is locked to the lock pin. Hand in direction A metal coil spring for biasing the constant in the circumferential direction from the bottom of the frame portion
A handle mechanism, comprising: a rib protruding at an interval to allow one end of the coil spring to be inserted inside; and a holder formed on the back surface of the handle and into which the other end of the coil spring is inserted.