JP2001193145A - Locking device for pit cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To offer construction for easily locking a cover and unlocking and opening the cover in association by eliminating the possibility of unlocking the cover due to vibration and shock during locking and applying force to a locking portion in the direction of opening the cover when opening the cover. SOLUTION: One of four sides of an open/closed cover body 2 is rotationally moved by a hinge fitting but constrained from upward escape. An open slit 4 is made at the approximate center of the opposite side symmetrical with the side perpendicularly to the side to form a storage portion for a lever 7 of a locking fitting 5. The lever in a pin structure is pivotally mounted on the cover to form a rod body suspended downward from a pin mounting portion. A wedged locking portion 8 is formed at the end of the rod body and a collar portion 9 disengageable therefrom is protruded on a receiving frame side main portion. Vane bodies 11 which contact the whole locking fitting in the process of rotational movement for pushing the cover up are planted right and left at the lever portion of the locking fitting. The cover is made open while being set free from constraint by pulling up the locking fitting at its end with a cover opening tool or fingers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a box lid for preventing the lid from jumping out of the lid when the vehicle passes at a high speed. It is.

[0002]

2. Description of the Related Art Conventionally, there is a system in which a lid and a receiving frame are connected by a chain, and a configuration in which the lid is fixed to the receiving frame with bolts.

[0003]

The key points of the present invention are that the locking operation is simple and that the locking operation is automatically performed without any special intention during the closing operation, and that the vibration during the locking operation is avoided. , It will not be released by impact, etc.
A technical problem to be solved is to provide a configuration in which unlocking and lid opening are performed in conjunction with each other by applying a force in a lid opening direction to a part performing a locking motion.

[0004]

The technical means for solving the above-mentioned problem is as follows. One of the four sides of the lid which can be opened and closed is usually a hinged metal or other structure in a square-shaped square lid.
It is configured to rotate around the part of the side but restrain escape from upward, and drill a long hole of a through hole at right angles to the side at substantially the center of the opposite side that is symmetrical to the side, The long hole is used as a storage portion for a lever of a locking hardware constituting the locking device, the lever being shorter than the length of the long hole, forming a void portion in the center of the lid body of the long hole and forming a gap with the receiving frame side. The rod is pivotally attached to the lid with a pin structure on the outside, and a rod hanging downward from the pin mounting portion is integrally formed, and a beveled locking portion is formed at the tip of the rod, and the locking is performed. A jaw portion engaging and disengaging from the receiving frame side main portion corresponding to the locking portion is further provided, and a slight gap is provided on the lower surface of the lid at a portion on the tip side from the pin position in the lever portion of the locking hardware. And the wing body is planted on the left and right sides so as to push up the lid body while rotating the whole lock hardware. Tip lid opening tool, in which a configuration in which the lid opening while releasing the constraint by pulling with a finger or the like.

[0005]

The operation and the operation of the present invention will be described. In the closed state, the locking hardware is pivotally attached to the lid body with a pin structure, and the locking side is attached to the lever side with the pin as the center. If the moment ratio on the lever side is set to be large on the lever side, the locking part will be restrained by the moment difference on the jaw configured on the receiving frame,
That is, the locked state is maintained, and when performing the lid opening operation, the lever tip of the locking hardware is pulled up by the lid opening tool in the long hole gap part, that is, the lid opening part, and the locking is performed. The locking part of the metal fitting is released from the jaw on the receiving frame side. During this time, the wings of the locking metal work in the gap with the lower surface of the lid, and work proceeds without contacting the lid. The wing body pushes up the lower surface of the lid to finish the work. When the target lid is relatively light, it is possible to work by directly putting a finger into the lid opening section without using a lid opening tool. Next, when performing the lid closing operation, simply returning the lid body to the lid closing direction, the locking part of the locking hardware slides into the receiving frame side jaw, and the locking operation is completed simultaneously with the lid closing. It is.

[0006]

An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, 1 is a receiving frame, 2 is a lid, and 3 is an arrow A
The hinge pin 4 for turning and opening and closing is formed by a long hole having a through hole formed substantially at the center of the opposite side of the side restricted by the hinge pin 3 of the lid 2 and perpendicular to the side. A locking hardware having a lever 7 stored with the gap 6 left, 8 is a beveled locking part integrally formed at the lowermost part of the locking hardware 5, and 9 is a receiving frame 1 which is engaged with and disengaged from the locking part 8. The configured jaw 10 is a pin on which the locking hardware 5 is pivotably attached to the lid 2, and 11 has a slight gap on the lower surface of the lid 2 and is integrally implanted in the locking hardware, and FIGS. 2A and 2B show a wing body that comes in contact with the rotating body and pushes up the lid body 2, FIG. 2 shows a mode of a lid opening operation, (1) shows a closed state before work, and FIG. 2) shows a state in which the lid opening tool 12 is inserted into the gap portion 6, the lever 7 is raised, and the locking portion 8 is removed from the jaw portion 9. FIG. Shows a state where the lid opening working the body 2 Te lifting progresses.

[0007]

As described above, according to the present invention, in the opening and closing operations, when the lever tip of the locking hardware is pulled upward by the opening opening part at the time of opening, first, the beveled shape is obtained. Is released from the jaw on the receiving frame side, and then the integral wings eliminate the gap with the lower surface of the lid and push up the lid to finish the work.When the lid is closed, simply close the lid The locking part of the locking hardware slides into the receiving frame side jaw simply by returning the locking hardware in the closing direction, and the locking operation is completed simultaneously with the closing of the locking hardware. The locked state is maintained, the workability is reasonable, the operation is reliable, and its practicality and usefulness are high.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cutout and a locking device of the present invention in which a part is cut away.

FIG. 2 is a front cross-sectional view showing the operation state of FIG. 1 (1) lid closed state before work (2) lock part 8 is removed from jaw 9 (3) lid 2 is pushed up and opened A state where the lid work is proceeding

[Explanation of symbols]

 1, receiving frame 8, locking portion 2, lid 9, jaw 3, hinge pin 10, pin 4, long hole 11, wing 5, locking hardware 12, lid opening tool 7, lever

Claims (1)

[Claims] 1. In a square cover, which is usually square, one of four sides of a cover which can be opened and closed is hinged, and other structures are used to rotate around the side, but escape upward. Is configured to be constrained, and a long hole is formed in a substantially central portion of the opposite side, which is symmetrical to the side, at right angles to the side, and the long hole is used as a storage portion for a lever of a locking hardware constituting a locking device. Things,
The lever is shorter than the length of the long hole, and a space is formed in the center of the cover of the long hole so that the lever is pivotally attached to the cover with a pin structure on the outer side on the receiving frame side. The rod body hanging down to is integrally formed, a beveled locking portion is formed at the tip of the rod body, and a jaw portion engaging with and disengaging from the receiving frame side main portion corresponding to the locking portion is projected, Further, in the lever portion of the locking hardware, there is a slight gap on the lower surface of the lid at a portion on the tip side from the pin position, and the lever comes into contact with the entire locking hardware while rotating and pushes up the lid. A wing body is implanted on the left and right as much as possible, and the lid is opened while releasing the constraint by pulling up the tip of the locking metal with a lid opening tool, a finger, or the like. Locking device for lid.