JPH09158937A - Connecting metal fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a theft and enhance safety at work time provide excellent mass productivity, by forming a structure with which a lock mechanism can not be easily unlocked. SOLUTION: A connecting metal fixture is formed in a constitution such that a base end of an opening/closing lever 3 is pivotally mounted in one end of an opening part of a C-shaped lever 2, and, by open/close turning this opening/closing lever 3, the opening part is constituted so as to be openable/closable by the opening/closing lever 3, and a closing lock cylinder 5, fitted to a closing engaging part between a tip end of this opening/closing lever 3 and the other end of the opening part to impede open/close turning of the opening/closing lever 3, is movably provided along the C-shaped lever 2 or the opening/closing lever 3. Here, a lock hole 6 is formed in the closing lock cylinder 5, a lock lever 9 impeding moving of this closing lock cylinder 5 by inserting the lock lever to this lock hole 6 is provided, and insertion/draw out moving of this lock lever 9 can be performed not by hand but only by a tool 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting fitting.

[0002]

2. Description of the Related Art A base end of an opening / closing rod is pivotally attached to one end of an opening portion of a C-shaped rod, and the opening / closing rod is pivoted to open / close the opening portion by the opening / closing rod. Various structures with different structures have been proposed depending on the application, but for the carabiner for mountaineering and for connecting with a lifeline to prevent a fall at work in high places, opening and closing In order to prevent the rod from being accidentally opened and rotated, the closing lock cylinder is fitted to the closing engagement portion between the tip of the opening / closing rod pivotally attached to one end of the opening of the C-shaped rod and the other end of the opening. It is screwed on.

Therefore, unless the closing lock cylinder moves, the opening / closing rod does not accidentally open and rotate, and when the opening is opened, the closing lock cylinder is manually rotated. The structure is such that it moves along the C-shaped rod or the open / close rod to expose the closing engagement portion, and the open / close rod is rotated to open the opening.

However, since the conventional closing lock mechanism has a structure in which the closing lock cylinder is simply screwed as described above, it may be subject to vibration or contact with an operator during work.
There is a concern that the screw of the closing lock cylinder may become loose, or the sliding engagement may be gradually moved to expose the closing engagement portion and open the opening / closing rod.

Further, in such a closing lock mechanism, the closing lock is released by manually turning the closing lock cylinder. In other words, anyone can unlock it by simply turning it by hand.

Therefore, since the object to be connected, which is connected to the connecting member, can be easily removed from the connecting member, the object to be connected and the connecting member can be stolen easily. For that purpose, for example, you can rent a set with a hook and a rope with a hook and a fall prevention device for working in high places connected with a hook
When used in the field, ropes with hook fittings are often stolen from the connecting fittings, and fall prevention devices for work in high places are often stolen, which bothers rental owners.

In view of such a current situation, an object of the present invention is to
The lock mechanism is a structure that cannot be easily released to prevent theft, and to provide an epoch-making connecting fitting that has high safety during work and is excellent in mass productivity.

[0008]

The gist of the present invention will be described with reference to the accompanying drawings.

The base end of the opening / closing rod 3 is pivotally attached to one end of the opening of the C-shaped rod 2, and the opening / closing rod 3 is opened and closed to open and close the opening. A closing lock tubular body 5 which is fitted into a closing engagement portion between the tip of the opening / closing rod 3 and the other end of the opening to prevent the opening / closing rotation of the opening / closing rod 3.
In a connecting fitting movably provided along the C-shaped rod 2 or the opening / closing rod 3, a locking hole 6 is formed in the closing lock cylinder body 5, and the locking hole A connecting metal fitting is characterized in that a lock rod 9 for preventing the movement of the body 5 is provided, and the insertion / drawing movement of the lock rod 9 cannot be performed by hand and can be performed only by a tool 15. It is a thing.

Further, a communication locking hole 7 communicating with the locking hole 6 is located inside the closing lock body 5 and the C-shaped rod 2 is provided.
Alternatively, the connecting fitting according to claim 1 is provided on the opening / closing rod 3.

Further, the outer end portion 11 of the lock rod 9 is provided with a hole such as a hexagonal hole, a cross hole, or a hole into which the tip of the rotary tool 15 can be inserted, and only by the rotary tool 15, the lock rod 9 can be inserted.
The connecting fitting according to any one of claims 1 and 2, wherein the connecting fitting can be inserted and pulled out.

Further, the lock rod 9 is a screw rod, the locking hole 6 or the communication locking hole 7 is a screw hole, and the lock rod 9 inserted into the locking hole 6 can be manually removed. The connecting metal fitting according to any one of claims 1 to 3, wherein the connecting metal fitting is configured to be detachable only by using the screw turning tool 15.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be briefly described with reference to the drawings, which are examples of embodiments, showing the functions and effects.

The closing lock body 5 is fitted on the closing engagement portion between the tip of the opening / closing rod 3 and the other end of the opening, and then the closing lock body 5 is inserted.
The lock rod 9 is inserted into the locking hole 6 provided in the lock rod 9, and the lock rod 9 locks the closing lock body 5 so as not to move accidentally.

When it is desired to open the opening of the C-shaped rod 2 and remove the object to be connected in the C-shaped rod 2, the lock rod 9 cannot be pulled out and moved by hand, so the tool 15 pulls out and moves the lock rod 9. Alternatively, it is completely pulled out and the blocking of the closing lock body 5 is released by the lock rod 9. Then, the closing lock body 5 is moved along the C-shaped rod 2 or the opening / closing rod 3 to expose the closing engagement portion, and the opening / closing rod 3 is opened and rotated to open the opening.

[0016]

Embodiments of the present invention will be described with reference to the drawings.

In this embodiment, as shown in FIGS.
The opening is provided on a part of the long side of the elliptical C-shaped rod 2, the opening / closing rod 3 connected to the pivot 8 at one end of the opening, and the notch step at the other end of the opening. A coupling fitting provided with the engaging portion 14 and a engaging portion 4 having a notched step portion at the tip so as to engage with the engaging portion 14 of the C-shaped rod 2 at the rotating tip of the opening / closing rod 3. The present invention is applied to.

In the present embodiment, the closing lock cylinder 5 is fitted and inserted into the outer periphery of the opening / closing rod 3 of the connecting fitting so that it can be slid along the opening / closing rod 3 and the engaging portion of the opening / closing rod 3 is formed. Four
Communication locking hole 7 that is a screw hole that penetrates the opening and closing rod 3 inside the
Is provided. That is, the cylindrical body covers the closed engagement portion (the engagement portion 14 and the engagement portion 4) that engages the engagement portion 14 of the C-shaped rod 2 and the engagement portion 4 of the opening / closing rod 3. 5 are provided so that the cylindrical body 5 is provided with a locking hole 6 so as to be inserted into the communication locking hole 7 provided in the opening and closing rod 3, and the communication locking hole 7 and the locking hole 6 are provided. The lock rod 9 is screwed by using a screw rod that penetrates through and connects with the cylinder body 5 so that the cylinder body 5 cannot slide.

Further, in this embodiment, the lock rod is made into a fine rod so that it cannot be easily removed by turning it by hand, and when screwed into the locking hole 7, the outer end portion does not protrude much from the drawing of the tubular body 5. Or
Alternatively, it is in a state of being put in. In this embodiment, a locking hole such as a hexagonal hole with which the tip of the screw turning rotary tool 15 engages is formed on the outer end of the lock rod 9, and the lock is screwed only by the screw turning rotary tool 15. Rotate the rod 9,
The lock rod 9 is pulled out from the communication locking hole 7 so that the movement prevention of the tubular body 5 can be released.

In this embodiment, the communication locking hole 7 penetrating the opening / closing rod 3 is provided inside the engaging portion 4 of the opening / closing rod 3 and the lock rod 9 is attached, but the lock rod 9 is attached. The location may be in the vicinity of the engaging portion 14 of the C-shaped rod 2 or the like, in short,
In order to prevent the opening / closing rod 3 from opening / closing, the closing lock cylinder 5
Is provided so as to cover the engaging portion 14 of the C-shaped rod 2 and the engaging portion (closing engaging portion) of the engaging portion 4 of the opening / closing rod 3, and locks the movement of the closing lock cylinder 5. It suffices if the locking rod 9 is inserted into the communication locking hole 7 and is locked, the communication locking hole 7 is not provided, and the locking rod 9 projecting from the locking hole 6 penetrating the tubular body 5 is abutted with the insertion end. You may lock.

Further, the lock rod 9 has been described with the thread provided on the outer periphery of the lock rod 9, but in this case, the lock rod 9 is provided.
May be screwed into both the locking hole 6 of the closing lock cylinder 5 and the communication locking hole 7 provided in the opening / closing rod 3 or the C-shaped rod 2, or only by screwing either one. But good.

Further, the threaded thread is not provided on the outer periphery of the lock rod 9, and the lock rod 9 is provided with the locking hole 6 of the closed lock cylinder 5, the opening / closing rod 3 or the communication locking hole 7 provided in the C-shaped rod 2. It may be a structure that is connected to.

FIG. 4 shows a structure in which the above-mentioned connecting fitting 1 is used to connect a fall arrester 20 and a hanging rope 30 which are used for high-altitude work such as construction, bridges, shipbuilding and power transmission work.

This fall arrester 20 is provided with a hole 21 for connecting to the connecting fitting 1 of this embodiment, a hook 31 is provided at one end of the suspension rope 30, and a hook 31 is provided at the other end. A ring 32 is provided. And, in the connecting fitting 1,
The hole 21 provided in the fall arrester 20 is connected to the hook 31 and the ring 32 provided in the suspension rope 30.

A connecting portion 22 for connecting the pulling rope 25 and the like is provided on the side of the fall arrester 20 opposite to the side connected to the connecting fitting 1.

A method of using the connecting fitting of this embodiment will be described with reference to this example.

FIG. 1 is a plan view showing a state in which the connecting metal fitting is closed, FIG. 2 is a plan view showing a cross section of a main part in a state in which the connecting metal fitting is closed, and FIG. 3 is an open state of the connecting metal fitting. It is a top view which shows the principal part cross section of the state where it is.

When connecting the object to be connected to the connecting fitting,
For example, the hook 31 and the ring 32 of the hanging rope 30 are inserted into the C-shaped rod 2 of the connecting fitting in the open state shown in FIG. 3, and the engaging portion 14 of the C-shaped rod 2 is engaged with the engaging portion 4 of the opening / closing rod 3. And a locking lock tubular body 5 is provided so as to cover the engaging portion 4 and the engaging portion 14, and the locking hole 6 and the opening / closing rod 3 provided in the blocking lock tubular body 5 are engaged.
The closing lock cylinder 5 is provided so as to be inserted into the communication lock hole 7 provided in the lock rod 9, and the lock rod 9 is provided at the outer end portion 11 of the lock rod 9 through the lock hole 6, for example, a hexagon wrench in a hexagonal hole or the like. Tools of 15
, And attach the lock rod 9 to the communication locking hole 7
The connecting fitting is fixed in the closed state as shown in FIG. 1 or 2.

The locking hole 6 provided in the closed lock cylinder 5 may be a through hole or a threaded one, and the number of the locking hole 6 may be one, so that the opposite surface of the locking hole 6 is penetrated if necessary. You can If the length of the lock rod 9 is such that it does not protrude beyond the outer peripheral surface of the closed lock cylinder 5 when the lock rod 9 is attached, the lock rod 9 will not be an obstacle when the connecting fitting is used in the closed state.

When one lock hole 6 is provided in the closed lock cylinder 5, when the lock rod 9 is mounted, the tip of the lock rod 9 has an inner surface facing the lock hole 6 of the closed lock cylinder 5. The lock rod 9 is firmly fixed by being protruded from.

In the above description, the hexagonal hole is provided in the outer end portion 11 of the lock rod 9, and the lock rod 9 is attached to the communication locking hole 7 using the tool 15 such as a hexagonal wrench.
The outer end 11 may have any shape such as a cross hole or a single hole instead of a hexagonal hole. In particular, a special shape that cannot be used with a commercially available tool is provided on the outer end 11, and a tool suitable for the special shape is separately provided. You may prepare.

[0032]

Since the present invention is constructed as described above, the lock rod does not easily (erroneously) loosen and rotate due to the lock rod, so that the lock state of the lock cylinder can be reliably maintained. It is highly safe, and this lock rod cannot be removed without using a tool such as a hexagon wrench, and it is not possible to separate the connected object from the connecting fitting without a tool. It is possible to prevent the article to be coupled or the coupling fitting from being stolen when stored in a coupled state. In other words, even if someone finds something to store the connected object and the connecting metal fitting in the connected state and tries to steal it, if you do not have the tool, you can not release the connected state,
Since it is impossible to steal the object to be connected or the connecting metal fitting, it becomes an epoch-making connecting metal fitting in which theft is suppressed.

According to the second aspect of the present invention, the communication lock hole is provided and the lock rod inserted into the lock hole is inserted into the communication lock hole to prevent the closed lock cylinder from moving. Blocking will be ensured.

Further, according to the third aspect, since the tool is a rotating tool, the lock rod can be removed smoothly with only a tool and is easy to handle.

If the outer end of the lock rod is formed into a special shape and a special tool is prepared so that the lock rod cannot be removed with a tool that is generally sold, the object to be connected and the connecting metal fitting can be connected. Separation is possible only with the special tool prepared, and it is possible to completely prevent the article to be connected or the connection metal fitting from being stolen.

[Brief description of the drawings]

FIG. 1 is a plan view showing a schematic overall configuration of a connecting fitting according to an embodiment of the present invention.

FIG. 2 is a plan view showing a cross section of a main part of a connecting fitting according to an embodiment of the present invention.

FIG. 3 is a plan view showing a cross section of a main part of a connecting fitting according to an embodiment of the present invention in an open state.

FIG. 4 is a perspective view showing a use state of the connecting fitting according to the embodiment of the present invention.

[Explanation of symbols]

 2 C-shaped rod 3 Opening / closing rod 5 Closure lock cylinder 6 Locking hole 7 Communication lock hole 9 Locking rod 11 Outer end 15 Tool

Claims (4)

[Claims] 1. A structure in which a base end of an opening / closing rod is pivotally attached to one end of an opening of a C-shaped rod and the opening / closing rod is pivoted to open / close so that the opening can be opened / closed by the opening / closing rod. A closing lock tubular body fitted to a closing engagement portion between the tip of the opening / closing rod and the other end of the opening to prevent the opening / closing rotation of the opening / closing rod is provided movably along the C-shaped rod or the opening / closing rod. In the connecting metal fitting, a locking hole is formed in the closing lock cylinder body, and a lock rod for preventing the movement of the closing lock cylinder body by inserting the locking hole is provided. A connecting fitting characterized in that it can be done only by a tool and cannot be done by hand. 2. The connecting fitting according to claim 1, wherein a communication locking hole communicating with the locking hole is provided in the C-shaped rod or the opening / closing rod located inside the closing lock body. 3. A hole into which an end of a rotary tool such as a hexagonal hole, a cross hole, or a hole can be inserted is provided at an outer end portion of the lock rod.
The connecting fitting according to any one of claims 1 and 2, wherein the locking rod can be inserted and pulled out only by the rotating tool. 4. The locking rod is a screw rod, and the locking hole or the communication locking hole is a screw hole, and the locking rod inserted into the locking hole cannot be removed by hand, and a screw turning tool is used. The connecting fitting according to any one of claims 1 to 3, wherein the connecting fitting is configured to be detachable only when used.