JPH0882140A - Handle device for locking - Google Patents

Abstract

PURPOSE: To smoothly drive a link mechanism without release of locked state due to vibration and shocks or the like without intention, by providing a handle, a locking member, an interlocked link mechanism, a guide groove, and support holes. CONSTITUTION: When a door 18 is unlocked, a plate 11 is driven by an interlocking mechanism 24 to retract to the deepest position in the case 1. Subsequently, a link plate pin 7 is positioned at the initial end of the curved part of a guide groove 25 and subsequently, a joint plate pin 14 is positioned at the initial end of the straight part of the guide groove 25. Next, when the door 18 is closed and the handle 19 is turned, the driving power from the rotary shaft 23 is transmitted to the cam 3 of interlocking mechanism 24. Plates 5, 9 are actuated by this rotation to vertically transfer the plate 11. When the locking member 22 is driven, the pin 7 is positioned at the terminal end of the curved part 24 of the guide groove 25 and the pin 14 is positioned at the terminal end of the straight part. Even if an external force acts on the mechanism 24, it is converted to a pushing force to the stopper 27. In this way, the locking member is not transferred to the unlocking position without intension to trustfully retain the locked state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking handle device used for opening and closing a door and for locking a door with respect to a fixed frame.

[0002]

2. Description of the Related Art In a conventional locking handle device disclosed in Japanese Utility Model Laid-Open No. 5-47272, a handle rotating shaft rotatably supported by a seat body mounted on a door,
A locking member for locking the door to the fixed frame and an interlocking link mechanism are interposed, and a linearly sliding crank is connected to the rotating shaft of the handle so that the interlocking link mechanism is integrally rotated and a guide member fixed to the door. A slide block that is movably fitted and has a lock member connected to the tip end, and an intermediate part where the tip end is connected to the base end of the slide block by a pivot and the base end is connected to the crank tip by a pivot. It is composed of links.

In this locking handle device, when the handle is rotated forward and backward, the slide block reciprocates up and down in a straight line, and the locking member moves up and down to engage and disengage from the receiving portion on the fixed frame side. However, when the locking member moves forward to the locking position, the stopper pin against which the connecting portion of the crank and the intermediate link collide is crimped and fixed to the guide member in order to restrict further rotation of the handle. .

However, in this conventional device, the door may be opened by accidentally releasing the lock due to vibration and shock, and the starting operation of the interlocking link mechanism by the rotation of the handle cannot be smoothly performed. there were.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a locking handle device in which the locking is not unintentionally released due to vibration or the like and the interlocking link mechanism can be activated smoothly. It is to be.

[0006]

The locking handle device of the present invention is rotatably supported by a seat main body 20 mounted on a door 18, which will be described below with reference to the accompanying drawings. The handle 19, the locking member 22 for locking the door 18 to the fixed frame 21, the rotary shaft 23 of the handle 19 and the locking member 22 are interposed and connected to the locking member 22 by the joint plate 11. The interlocking link mechanism 24, the guide groove 25 of the interlocking link mechanism 24, and the joint plate 1
And a case 1 provided with one support hole 26.

The interlocking link mechanism 24 is attached to the handle 19
Cam 3 connected to the rotating shaft 10 of
And the cam pin 6 at the base end to the diametrical arm of the cam 3.
The first link plate 5 in which the center link plate pin 7 is inserted into the guide groove 25, and the base end is pivotally connected to the tip end of the first link plate 5 by the link pin 10. Part is joint plate pin 14
And a second link plate 9 pivotally attached to the base end of the joint plate 11.

When the joint plate pin 14 is inserted into the guide groove 24 of the case 1 and the cam 3 is rotated by the rotation operation of the handle 19, the locking member 22 is driven to the locking position via the interlocking link mechanism 24, Link pin 10
Link plate pin 7 and joint plate pin 14
When the dead point position on the straight line connecting the
The case 1 is provided with a cam stopper 27 with which the arm portion of the contact portion abuts.

Although the guide groove 25 of the interlocking link mechanism 24 provided in the case 1 is formed straight in the vertical direction as a whole, the guide groove 25 into which the link plate pin 7 is inserted can be curvedly formed.

[0010]

When the door 18 is unlocked, the joint plate 11 moves the interlocking link mechanism 24 as shown in FIG.
It is in the position where it is most deeply retracted into the case 1 by being pulled by. The link plate pin 7 is located at the beginning of the curved portion of the guide groove 25, and the joint plate pin 14 is located at the beginning of the straight portion of the guide groove 25.

When the door 18 is closed and the handle 19 is rotated in a predetermined direction, the driving force from the rotary shaft 23 of the handle 19 is transmitted to the cam 3 which is the input end of the interlocking link mechanism 24.
By the rotation of the cam 3, the first link plate 5 and the second link plate 9 are actuated, and the joint plate 1
1 is moved forward and downward.

As shown in FIG. 7, when the locking member 22 is driven to the locking position, the link plate pin 7 is guided by the guide groove 2
5 is located at the end of the curved portion, and the joint plate pin 14 is located at the end of the straight portion of the guide groove 25.

[0013]

In the illustrated embodiment, a torsion coil spring 12 is provided between the screw guide 2 provided on the case 1 and the joint plate pin 14, and the joint plate 11 is urged to move in the projecting direction. A pair of upper and lower interlocking link mechanisms 24 are prepared, and a pair of upper and lower locking members 22 are simultaneously driven by rotating the handle 19.

The case 1 is mounted on the back side of the door 18 via a suitable adapter 28. The locking member 22 is composed of a known latch device or the like, and engages with and disengages from the receiving member 22 on the fixed frame body 21 side. The locking member 22 and the joint plate 11 are connected by a known means such as a locking rod.

The maximum rotation angle of the cam 3 is set to 60 degrees, and the arm portion of the cam 3 comes into contact with the cam stopper 27 of the case 1 at the stage of rotating by 60 degrees. When the rotation angle of the cam 3 is 50 degrees, as shown in FIG.
Is the link plate pin 7 and the joint plate pin 14
The cam 3 is in a position before the dead center position on the straight line connecting the lines, and in this state, the cam 3 may reverse when a strong vibration impact is applied.

[0016]

As described above, in the locking handle device of the present invention, when the locking member 22 is driven to the locking position through the interlocking link mechanism 24, the link pin 10 causes the link plate pin 7 and the joint plate pin to move. Since the case 1 is provided with the cam stopper 27 with which the arm portion of the cam 3 abuts at the stage beyond the dead center position on the straight line connecting the fourteen, the interlocking link mechanism 2 via the locking member 22 due to vibration impact.
Even if an external force is applied to 4 in the vertical direction, the external force is converted into a force for pressing the arm portion of the cam 3 against the cam stopper 27, so that the locking member 22 unintentionally moves to the unlocked position. It has excellent reliability in maintaining the lock.

When the guide groove 25 into which the link plate pin 7 of the interlocking link mechanism 24 is inserted is curved, the interlocking link mechanism 2 is rotated by rotating the handle 19.
The operation at the time of starting 4 can be performed smoothly and appropriately.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a locking handle device according to an embodiment of the present invention, in which a locking member is in a locking position.

FIG. 2 is a right side view of the locking handle device.

FIG. 3 is a front view of a main part of the locking handle device.

FIG. 4 is a right side view of a main part of the locking handle device.

FIG. 5 is a cross-sectional view of essential parts when the locking handle device is unlocked.

FIG. 6 is a cross-sectional view of essential parts of the locking handle device at the time of operating at 50 degrees.

FIG. 7 is a cross-sectional view of essential parts of the locking handle device during locking.

8 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Case 2 Screw Guide 3 Cam 4 Ring 5 1st Link Plate 6 Cam Pin 7 Link Plate Pin 8 Link Plate Ring 9 2nd Link Plate 10 Link Pin 11 Joint Plate 12 Spring 13 Spacer 14 Joint Plate Pin 15 Small Screw 16 Pan head screw with spring washer 17 Hexagon nut 18 Door 19 Handle 20 Seat body 21 Fixed body 22 Locking member 23 Handle rotating shaft 24 Interlocking mechanism 25 Guide groove 26 Support hole 27 Cam stopper 28 Adapter

Claims (2)

[Claims] 1. A handle 19 rotatably supported by a seat body 20 mounted on a door 18;
Locking member 22 for locking to 1; Rotating shaft 2 of handle 19
The interlocking link mechanism 24 that is interposed between the locking member 22 and the locking member 22 and is connected to the locking member 22 by the joint plate 11; the guide groove 25 of the interlocking link mechanism 24 and the support hole 26 of the joint plate 11 are provided. The case 1 and the interlocking link mechanism 24 are connected to the rotating shaft 10 of the handle 19 so as to rotate integrally with the cam 3, and the base end portion is pivotally attached to the diametrical arm portion of the cam 3 by the cam pin 6. The link plate pin 7 in the central portion is inserted into the guide groove 25.
The first link plate 5 inserted into the base plate, and the base end portion is pivotally attached to the tip end portion of the first link plate 5 by the link pin 10, and the tip end portion is pivotally attached to the base end portion of the joint plate 11 by the joint plate pin 14. The joint plate pin 14 is inserted into the guide groove 24 of the case 1, the locking member 22 is driven to the locking position, and the link pin 10 and the link plate pin 7 are jointed. A lock handle device in which a case 1 is provided with a cam stopper 27 with which the arm portion of the cam 3 abuts when a dead point position on a straight line connecting the plate pins 14 is exceeded. 2. The locking handle device according to claim 1, wherein the guide groove 25 into which the link plate pin 7 is inserted is curved.