JPH11159217A - Locking device for snow ditch - Google Patents

Abstract

(57) [Problem] To provide a locking device for a snow drift that can be forcibly locked even if snow is trapped between a lid and a fixed frame. SOLUTION: A lock lever 4 and a release lever 8 are pivotally mounted on a side wall plate 1 of a fixed body, and a metal receiving rod 2 on a fixed frame body 21 side.
A receiving groove 5 that engages with and disengages from the lock lever 4 is provided at the tip of the lock lever 4.
A locking notch 6 and an unlocking notch 7 are provided at the base end of the lock lever 4, a locking claw 9 is provided at a distal end of the release lever 8, and a torsion coil spring 13 fitted on a pivot of the release lever 8 is provided. Accordingly, the locking claw 9 is urged to rotate in a direction in which the locking claw 9 engages with the locking notch 6 or the unlocking notch 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device used for a cover of an inlet of a snowfall ditch.

[0002]

2. Description of the Related Art In a conventional snow groove locking device, a lock lever that is engaged with and disengaged from a metal bar on a fixed frame side is deviated from a center of gravity with respect to a side wall plate of a fixed body fixed to a lower surface of a lid. When the cover is closed, the lock lever is rotated in the locking direction by the rotational force due to the eccentric weight and engages with the receiving rod.

However, in such an operation type locking device, when a snow lump is caught between the lid and the fixed frame or between the lock lever and the lid, the snow acts as a resistance, and the rotation of the lock lever is prevented. Since the lid stops halfway, locking of the lid is not established or the lid is in a semi-locked state, which is dangerous.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for controlling a vehicle even when snow is sandwiched between a lid and a fixed frame.
An object of the present invention is to provide a snow gutter locking device that can be forcibly locked.

[0005]

Means for Solving the Problems Hereinafter, a description will be given using reference numerals in the accompanying drawings. In the locking device for a snowfall groove of the present invention, the mounting plate portion 2 at the base end portion is provided with an inlet 23 for the snowfall groove. Lid 1
8, a receiving rod 20 fixed to the fixing frame 21 of the insertion port 23, and a fixing body 24.
Lock lever 4 and release lever 8 pivotally connected to
And the torsion coil spring 1 for urging the release lever 8 to rotate
3

The locking lever 4 has a receiving groove 5 which is pivotally connected to one edge of the intermediate portion of the side wall plate 1 of the fixed main body 24 by a first pivot shaft 14 and is engaged with and disengaged from a receiving rod 20 at the tip. The locking notch 6 and the unlocking notch 7 are provided at the base end. The release lever 8 has a middle portion pivotally connected to the other edge of the middle portion of the side wall plate 1 of the fixed body 24 by a second pivot shaft 15, and the locking notch 6 and the unlocking notch 7 of the lock plate 4.
A hook claw 9 is provided at the distal end of the unlocking operation rod 22.
The receiving rod 12 on which the hook portion 22a is hooked is fixed to the passive arm portion 10 at the base end. The torsion coil spring 13
The coil portion 13a is fitted on the second pivot 15, and the coil portion 1
The first linear portion 13b extended to one side of the side wall 3a contacts the spring receiving plate portion 3 at the tip of the side wall plate 1, and the second linear portion 13c extended to the other side of the coil portion 13a is a passive arm of the release lever-8. The release lever 8 is hung on the upper surface spring receiving portion 11 of the portion 10 and rotationally urges the release lever 8 in the direction in which the locking claw portion 9 engages with the locking notch 6 or the unlocking notch 7.

[0007] In this snow groove locking device, when the lid 18 is closed as shown in FIG.
The receiving rod 20 is engaged with the receiving groove 5, and the locking claw 9 of the release lever 8 is engaged with the locking notch 6 of the lock lever 4. Since the release lever 8 is rotationally urged clockwise by the torsion coil spring 13, the engagement between the locking claw 9 and the locking notch 6 is securely held, and the lock lever 4 is moved to the locking position. Will be maintained. At this time, since the receiving groove 5 is oriented in a direction substantially parallel to the lid 18, the lid 1
Even if the user attempts to open the cover 8, the receiving rod 20 does not come off the receiving groove 5, and the cover 18 is kept closed. .

[0008] An unlocking operation rod 22 is inserted into the lower surface side of the lid 18 from an insertion opening 19 provided at a predetermined position of the lid 18, and the hook 22 a at the tip of the unlocking operation rod 22 is connected to the passive arm 10 of the release lever 8. Of the passive arm 10
Release lever 8, the torsion coil spring 1
3 rotates counterclockwise about the second pivot 15. By this rotation, the catch 9 of the release lever 8
Is released from the locking notch 6 of the lock lever 4,
The lock lever 4 becomes rotatable. Therefore, when the unlocking operation rod 22 is further pulled up, the lid 18 rotates clockwise around the hinge shaft (not shown) at the right end.

When the cover 18 is lifted, the lock lever 4 rotates counterclockwise about the first pivot 14 because the lower inner surface 5a of the receiving groove 5 is pushed by the receiving rod 20. Unlocking operation rod 2 with receiving groove 5 inclined downward with respect to lid 18
When the hook 2 is removed from the receiving rod 12, the latching claw 9 of the release lever 8 is held in a state of being engaged with the unlocking notch 7 of the lock lever 4. When the door 18 is lifted and rotated in this state, the receiving rod 20 on the fixed frame body 21 escapes from the receiving groove 5 of the lock lever 4, and the door 18 can be opened for putting snow chunks.

When the lid 18 is pushed in the closing direction after the completion of the loading of the snow mass, the upper inner surface 5b of the receiving groove 5 first hits the metal rod 20, and the lock lever 4 is pushed by the metal rod 20, so that the first pivot 14 Rotate clockwise around. Therefore, the release lever 8 rotates counterclockwise about the second pivot 15, and the locking claw 9 of the release lever 8 is disengaged from the unlocking notch 7 of the lock lever 4, and again the locking notch 6. Engage with. At this time, even if a small snow mass is sandwiched between the lid 18 and the fixed frame body 20 or between the lock lever 4 and the lid 18, the lock lever 4 is forcibly moved to the closed position by the strong restoring force of the torsion coil spring 13. Because it is rotated, it does not enter a semi-locked state.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, the fixing body 24 is shown.
Is provided with a pair of side wall plates 1, 1, and the mounting plate portion 2 is
Are provided at right angles to the base end. Twist coil spring 13
Has a pair of coil portions 13a, 13a arranged on both sides of the release lever 8, and the second linear portion 13c is constituted by an intermediate bent portion connecting the two coil portions 13a, 13a. The two first straight portions 13b, 13b extended from the two coil portions 13a, 13a are in contact with a pair of spring receiving plates 3, 3 of the fixed body 24, so that an elastic force required for pushing out a small snow mass can be obtained. It is supposed to be. Further, in order to prevent the locking and unlocking operations from being hindered by freezing of the first pivot 14 and the second pivot 15, the first pivot 14 is covered with a first anti-freeze collar 16, The two pivots 15 are covered with a second anti-freeze collar 17.

[0012]

According to the locking device for a snowfall groove of the present invention configured as described above, even if a small snow lump is sandwiched between the lid 18 and the fixed frame 21, the cooperative restoration of the torsion coil spring 13 is achieved. Since the lock lever 4 is forcibly rotated to the closed position by the force, the lid 18 can be safely locked at the proper closed position without lock failure or semi-locked state.

[Brief description of the drawings]

FIG. 1 is a front view of a snow drift locking device according to an embodiment of the present invention.

FIG. 2 is a bottom view of the snow drift lock device.

FIG. 3 is a right side view of the snow groove locking device.

FIG. 4 is a central longitudinal sectional view in a closed state of a lid to which the snow groove locking device is attached.

FIG. 5 is a longitudinal sectional view showing an initial state of opening the lid of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side wall plate of a fixed main body 2 Mounting plate part of a fixed main body 3 Spring receiving plate part of a fixed main body 4 Lock lever 5 Lock lever receiving groove 6 Lock lever locking notch 7 Lock lever unlocking notch 8 Release Lever 9 Hook claw portion of release lever 10 Passive arm portion of release lever 11 Upper surface spring receiving portion of passive arm portion 12 Receiving rod of passive arm portion 13 Torsion coil spring 14 First pivot 15 Second pivot 16 First freeze prevention collar -17 Second freezing prevention collar 18 Cover for opening slot for snow flow groove 19 Insertion opening for lid unlocking operation rod 20 Receiving rod 21 Fixed frame body for opening port for snow flow groove 22 Unlocking operation rod 23 Snow flow groove Inlet 24 Fixed body of lock device

Claims (1)

[Claims] 1. A fixed main body 24 to which a mounting plate portion 2 at a base end is fixed to a lower surface side of a lid 18; and an intermediate portion formed by a first pivot 14 at one edge of an intermediate portion of a side wall plate 1 of the fixed main body. A receiving groove 5 is provided at the distal end, which is engaged with a metal rod 20 provided on a fixed frame 21 of a snow flow slot input port 23, and a locking notch 6 is provided.
And a lock lever 4 having an unlocking notch 7 at the base end;
An intermediate portion is pivotally connected to the other edge of the intermediate portion of the side wall plate 1 by a second pivot shaft 15, and a locking claw portion 9 engaging and disengaging with the locking notch portion 6 and the unlocking notch portion 7 of the lock plate 4. A release lever 8 having a receiving rod 12 on which a hook 22a of an unlocking operation rod 22 is hooked attached to a passive arm 10 at a base end.
The coil portion 13a is fitted on the second pivot 15, and the first straight portion 13b extended to one side of the coil portion 13a contacts the spring receiving plate portion 3 at the tip of the side wall plate 1, and the other side of the coil portion 13a. The second straight portion 13c extended to the release lever-8
And the release lever 8 is urged to rotate in the direction in which the locking claw 9 engages with the locking notch 6 or the unlocking notch 7. A snow groove locking device comprising a coil spring 13.