JPH05202667A - Hanging look tool for cover of opening part - Google Patents

Abstract

PURPOSE:To easily operate hanging lock and release at one touch by engaging the cam engaging claw provided on a hook with the engaging groove of a can body, and rotating or restraining the cam body with a spring. CONSTITUTION:A hook 1 having a cam engaging claw 5 on the side part and a main body 2 are respectively fitted opposing to a cover 6 and an opening part. This main body 2 is provided with a hook inserting device 13, a pressing member 30, a cam body 40 having an engaging groove 42, and a spring 50. When the cover 6 is pressed against the opening part, the hook is inserted into the hook inserting passage 13, and the head part is pressed in the reverse direction of the inserting direction by means of the pressing member 30. Next, the can engaging claw 5 is engaged with the engaging groove 42 of the cam body 40. At this time, the cam body 40 is rotated or restrained by means of the spring 50, and hanging lock and release are alternately repeated at every pressing of the cover 6 to the opening part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch for latching a lid to an opening, and more specifically, every time the lid is pressed against the opening, the lid and the opening are latched or released alternately. Related to the hook.

[0002]

2. Description of the Related Art Conventionally, an opening for inspection is provided on a ceiling of a building, and a lid that can be opened and closed is attached to the opening. A general opening is formed by cutting a predetermined portion of a wall material such as a ceiling and reinforcing the edge portion with a reinforcing material. Then, a lid having a size suitable for this opening is prepared, but an appropriate hooking tool is usually used for opening and closing the lid. Many of the hooks that have been used in the past are made up of hooks and brackets that receive them.
The receiving metal fitting is attached to the edge of the opening, and the lid is opened and closed by attaching and detaching the hooking metal fitting to the receiving metal fitting.

[0003]

However, in order to open and close the lid by using such a conventional hook, it is necessary to support the lid at a predetermined position with one hand and operate the hook with the other hand. I always needed both hands. Further, when the opening is large, the weight of the lid becomes large, so that it sometimes took two persons to open and close the lid. Further, the hook metal is exposed on the surface of the lid, which is not preferable in appearance. Therefore, the present invention solves the problems of the conventional hooks, and provides a one-touch hook that can be operated with one hand and that does not appear on the surface of the lid. To do.

[0004]

SUMMARY OF THE INVENTION A hooking device of the present invention for solving the above-mentioned problems is a hooking device for hooking a lid on an opening, and the hooking device is provided to face either the opening or the lid. It is composed of a main body and a hook to be attached. The hook has a cam engaging claw on its side portion. On the other hand, the main body has a hook insertion path where you can insert a hook,
A pressing means for pressing the head of the hook in the direction opposite to the insertion direction when the hook is inserted into the hook insertion path, and a rotatably rotatably supported adjacent to the hook insertion path and engageable with a cam engaging claw of the hook. A cam body having a plurality of engagement grooves and a spring for rotating the cam body are provided. The spring is configured to elastically press the outer circumference of the cam body, rotate the cam body according to the outer peripheral shape of the elastic pressure position, and restrain the cam body. Then, when the hook is inserted into the hook insertion path, the spring is fitted into one of the engagement grooves to hold the engagement groove of the cam body at the hook lock position facing the cam engagement claw of the hook. To be done. Further, when the hook is pushed back from the state to the pressing means, the cam engaging claw is engaged with the engaging groove of the cam body to be in the locked state, and the cam body is slightly moved by the locking operation. 40 rotates and the spring 50 disengages from the engagement groove 42 and elastically presses against the edge of the engagement groove. Then, when the hook 1 is pushed in again from that state, the cam body 40 is rotated by the elastic force of the spring 50, and the engagement groove 42 and the cam engagement claw 5 are held at the hook release position where they do not face each other. The hook 1 is pushed back by the pressing means 30 and separated from the main body 2.

[0005]

In the hooking device of the present invention, by attaching the main body and the hook to either the opening or the lid, the hooking and releasing can be repeated each time the lid is pressed against the opening. Therefore, if the opening has a normal size, the opening / closing operation can be performed with one hand, and even if the opening is large, the opening / closing operation can be sufficiently performed by one person. Furthermore, since there are no parts on the surface of the lid that impair the appearance, it is aesthetically pleasing.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an exploded perspective view showing an example of a latch of the present invention. The latch is composed of a hook 1 and a main body 2. The hook 1 has a mounting portion 3, an elongated plate-shaped insertion shaft 4 standing upright from the mounting portion 3, and a cam engagement claw 5 provided so as to project at a right angle from a side portion of the insertion shaft 4. The hook 1 is provided, for example, with a pair of bolts 7 on the back surface of the lid 6.
And attached with nut 8.

The main body 2 comprises a U-shaped casing 9 whose upper and lower sides and one side are open, and a cover 10 for closing the upper and lower sides and the side. The casing 9 comprises a back plate 11 and a pair of side plates 12 extending at right angles from both ends thereof, and a hook insertion path 13 is formed inside one of the side plates 12. The side plate 12 constituting one wall of the hook insertion path 13 is formed with an uneven surface having a large number of lateral grooves to prevent the hook from slipping.

A pair of flanges 14 are formed at right angles outward from the tops of the side plates 12, and each of the flanges 14 has a hole 15 for attaching to the edge of the opening with a bolt or the like. It is provided. Further, a pair of flanges 16 extending outward from the side portions of the side plate 12 at a right angle are provided, and the flanges 16 are also provided with mounting holes 17. A slit 18 is provided on each of the flanges 16.

The cover 10 is composed of a front plate 19, a top plate 20 and a bottom plate 21, and has a U-shape with both sides open. At both ends of the front plate 19, holes 22 corresponding to the holes 17 of the flange 16 of the casing 9 are provided. A pair of insert pieces 24 formed by being separated by slits 23 are provided near both sides of the upper plate 20, and the insert pieces 24 have holes 15 of the flange 14 formed therein.
Is provided with a hole 25 corresponding to. A U-shaped insertion hole 26 is provided near one end of the bottom plate 21. The insertion hole 26 is for inserting the hook 1,
With the cover 10 attached to the casing 9,
It is configured so as to coincide with the hook insertion path 13 located above it.

Inside the main body 2, there is provided a pressing means 30 for pressing the head of the hook 1 inserted in the hook insertion path 13 in the direction opposite to the inserting direction. This pressing means 30
Is composed of a shaft 31 whose both ends are fixed to the back plate 11 and the front plate 19 and a spring 32 supported by the shaft 31, and a U-shaped arm 33 of the spring 32 forms a downward pressing body. A cam body 40 is further provided inside the main body 2. The cam body 40 is composed of an elongated block body rotatably supported by a shaft 41 having both ends fixed to the back plate 11 and the front plate 19, and the length thereof is the U-shaped arm 33 of the spring 32. Is slightly smaller than the width. The cross section at right angles to the axis is in the form of a trapezoid in which both short sides of the rectangle are formed into engagement grooves 42 formed of, for example, V- or U-shaped concave grooves and both long sides are formed into a flat surface 43.

Angle setting members 44 are fixed to the outer sides of both ends of the cam body 40 in the axial direction. The angle setting member 44 has an elongated butterfly shape, and its longitudinal direction is slightly inclined with respect to the line connecting the centers of the engagement grooves 42. The arm 33 of the spring 32 is engaged with the upper surface of the angle setting member 44 to forcibly set the angle of the cam body 40. A spring 50 for driving the cam body 40 is provided obliquely below the cam body 40. The spring 50 is supported by a shaft 51 whose both ends are fixed to the back plate 11 and the front plate 19.

The spring 50 constitutes a torsion spring which is wound around a shaft 51 a plurality of times, an arm 53 at the center thereof is formed in a planar U-shape, and a tip portion 55 thereof is formed in a circular arc shape (this tip is formed). The parts are shown in FIGS. 3 to 6), and are configured so that they can be engaged with the engagement groove 42 of the cam body 40. When the cover 10 is attached to the casing 9, the tip portions of the arms 54 at both ends are in contact with and supported by the upper surface of the bottom plate 21. FIG. 2 shows a state in which the hook 1 is inserted into the body 2 assembled by caulking the casing 9 and the cover 10 shown in FIG.

Next, the operation of the latch of FIG. 1 will be described with reference to FIGS. First, in FIG. 3, one edge of the opening 60 and the lid 6 are joined by a hinge (not shown), and the main body 2 is attached to the inside of the edge opposite to the hinge joining portion. The hook 1 is attached to a predetermined position of the lid 6 corresponding to the part. Before the insertion shaft 4 of the hook 1 is inserted into the hook insertion path 13 of the main body 2, one end of the arm 55 of the spring 50 is engaged with one engagement groove 42 of the cam body 40, and the cam body 40 is slanted to the right. The angle is set so that the other engagement groove 42 is located above.
The position of the cam body 40 at this angle is a hook lock position where the engaging claw 5 of the hook 1 to be inserted and the engaging groove 42 of the cam body 40 face each other. On the other hand, the arm 33 of the pressing means 30 is also engaged with the upper surface of the angle setting member 44 of the cam body 40, thereby making the angle setting of the cam body 40 more reliable.

When the insertion shaft 4 of the hook 1 is inserted into the hook insertion path 13 of the main body 2 by pushing the lid 6 as shown in FIG. 3, first, the head of the arm 33 of the pressing member 30 is opposed to the downward pressing force. And lifts the arm 33 upward to move the arm 33 to the cam body 4
The angle setting member 44 of 0 is detached from the upper surface. At that time, the cam engaging claw 5 comes into contact with the flat surface 43 of the cam body 40, and ascends slightly in the counterclockwise direction to slide and rise. When the hook 1 is further inserted, the cam engaging claw 5 is disengaged from the flat surface 43 of the cam body 40, and the cam body 40 moves the spring 50.
Is returned to the angle of the hook lock position by the action of FIG.
It becomes the state of. Thus, the cam body 4 when the hook 1 is inserted
Zero is always maintained at the hook lock position angle by the spring 50. FIG. 4 shows a state in which the cam engaging claws 5 of the hook 1 are completely separated from the cam body 40 and the head of the hook 1 is inserted to the uppermost part of the hook insertion path 13.

FIG. 5 shows a state in which the hook 1 is returned in the reverse direction while the insertion force of the hook 1 is relaxed from the state of FIG. 4 to adapt to the downward pressing force of the pressing means 30. Ie hook 1
The tip end of the engaging claw 5 contacts the projection on the upper part of the engaging groove 42 of the cam body 40 to lock the rotation of the cam body 40, whereby the engaging claw 5 and the engaging groove 42 are engaged with each other. It's locked. At that time, the hook 1 includes the engaging claw 5 and the cam body 4.
It is sandwiched between 0 and between the side surface of the insertion shaft 4 and the side plate 12 of the main body 2 and is stably locked to the main body 2. as a result,
The lid 6 is hooked on the opening 60. Next, when the lid 6 is pushed again and the hook 1 is pushed further into the insertion path 13 of the main body 2, the engaging claw 5 is disengaged from the engaging groove 42 of the cam body 40, and the state shown in FIG. 6 is obtained. That is, the cam body 40, which has been unconstrained by the engaging claw 5, is rotated clockwise by the spring 50, and its engaging groove 42 is held at the hook releasing position where it does not face the engaging claw 5 of the hook 1. ..

Therefore, when the force applied to the lid 6 is released from this state, the hook 1 is pushed back by the pressing means 30 and is removed from the insertion hole, whereby the lid 6 and the main body 2 are released.
The lock with and is released. On the other hand, the hook 1 is the insertion path 13
When disengaged from the flat surface 43 of the cam body 40
Since it is rotated while contacting with, the engaging groove 42 of the cam body 40 reaches the position where it contacts the tip portion 55 of the spring of the spring 50. Then, the spring action further rotates the cam body 40, and the engagement groove 42 is engaged with the tip portion 55 of the spring. In this state, the position of the cam body 40 is as shown in FIG.
Position, that is, the hook lock position, and a standby state is waited for the next insertion of the hook 1. In the present example, the rotation of the cam body 40 by the spring 50 and the rotation of the pressing means 30 are performed at the same time, so that the position of the cam body 40 can be set more reliably.

In the above description, the hook 1 is attached to the lid 6 and the main body 2
Although the hooks 1 are attached to the openings 60, respectively, the hook 1 can be attached to the openings 60 and the main body 2 can be attached to the lid 6. Although the cam body 40 is provided with the angle setting member 44 to make the setting of the angle more reliable, this means may be omitted in some cases. Further, as an application example of the hook of the present invention, the hook and the main body may be attached to each side of the opening and the lid as a pair, and the lid may be attached to and detached from the opening in parallel.

[0018]

EFFECTS OF THE INVENTION Since the latch for the lid of the opening according to the present invention has the above-described structure, it is possible to open and close the lid with one hand. Furthermore, it is aesthetically superior because no parts that impair its appearance appear on the surface of the lid.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example of a latch according to the present invention.

2 is a perspective view showing a state in which a hook 1 is inserted into a main body 2 assembled by caulking a casing 9 and a cover 10 shown in FIG.

FIG. 3 is an explanatory view showing an operation of the hooking tool of FIG. 1.

FIG. 4 is an explanatory view showing an operation of the hooking tool of FIG. 1.

FIG. 5 is an explanatory view showing the operation of the hooking device in FIG. 1.

FIG. 6 is an explanatory view showing the operation of the hooking tool of FIG. 1.

[Explanation of symbols]

 1 Hook 2 Main Body 3 Mounting Part 4 Insertion Shaft 5 Cam Engagement Claw 6 Lid 7 Bolt 8 Nut 9 Casing 10 Cover 11 Back Plate 12 Side Plate 13 Hook Insert Path 14 Flange 15 Hole 16 Flange 17 Hole 18 Slit 19 Front Plate 20 Top Plate 21 Bottom Plate 22 Hole 23 Slit 24 Inserting Piece 25 Hole 26 Insertion Hole 30 Pressing Means 31 Shaft 32 Spring 33 Arm 40 Cam Body 41 Shaft 42 Engagement Groove 43 Plane 44 Angle Setting Member 50 Spring 51 Shaft 53 Arm 54 Arm 55 Tip 60 Aperture

Claims (1)

[Claims] 1. A hook for hooking a lid 6 to an opening 60, which comprises a main body 2 and a hook 1 which are attached to face the opening 60 or the lid 6, and the hook 1 The main body 2 has a cam engaging claw 5 on its side portion, and a hook insertion path 13 into which the hook 1 can be inserted, and a head portion of the hook 1 when the hook 1 is inserted into the hook insertion path 13. A pressing means 30 for pressing in the opposite direction, and a rotatably rotatably supported adjacent to the hook insertion path 13, and
A cam body 40 having a plurality of engaging grooves 42 capable of engaging with the cam engaging claws 5 of the hook 1 on the outer circumference, and the cam body 40 is elastically pressed against the outer circumference of the cam body 40, and the cam body according to the outer peripheral shape of the elastic pressure position. 40 is provided with a spring 50 that rotates and restrains 40, and when the hook 1 is inserted into the hook insertion path 13, the spring 50 fits into one of the engaging grooves 42 and the cam body 40 is inserted. When the engaging groove 42 is held at the hook lock position facing the cam engaging claw 5 of the hook 1 and the hook 1 is pushed back from the state to the pressing means 30, the cam engaging claw 5 is moved to the cam. The body 40 is engaged with the engagement groove 42 to be in a locked state, and the cam body 40 is slightly rotated with the locking operation so that the spring 50 is disengaged from the engagement groove 42 and the engagement is performed. Repress on the edge of the groove, then from that state When the hook 1 is pushed in, the cam body 40 is rotated by the elastic force of the spring 50, and the engagement groove 42 and the cam engagement claw 5 are held at the hook release position where they do not face each other. Is adapted to be pushed back by the pressing means 30 to be detached from the main body 2.