JPH08198005A - Fixing hook - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a fixing hook that is easy to put on and take off and has good workability. [Structure] The hook body 2 provided with a pair of arm supporting portions 11 and a tip end surface 14 of an outer swinging end face each other and abut each other to form a substantially O-shaped closed locking opening 17. As can be constructed, a pair of arms 3 each of which has an intermediate portion near the inward swing end 13 rotatably supported by a pin 9 of the arm support portion 11 and the locking opening 17 are substantially C-shaped. The torsion coil spring 5 for urging the arms 3 in the direction of opening the arms 3 and the engaging portion 4a formed at one swing end engages with the engaging portion 15 of the arm 3 to close the arm 3. The pin 10 of the lever support portion 12 of the hook body 2 can be held by
And a compression coil spring 6 for urging the lever 4 in a direction to engage with the arm 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing hook,
In particular, the present invention relates to an improvement of a fixing hook suitable for use in a belt with a hook for fixing an object to be fixed such as a wheelchair or luggage loaded in a vehicle.

[0002]

2. Description of the Related Art Conventionally, a fixing hook suitable for use with a belt with a hook for fixing an object to be fixed such as a wheelchair or luggage loaded on a vehicle is disclosed in, for example, Japanese Utility Model Publication No. 5-62270. Like a safety hook, the opening / closing lever (opening / closing cap) is provided on the abdominal side of the hook body to open and close the hook, and a safety device is also provided on the back side to prevent unexpected rotation of the opening / closing lever. Are used. In such a safety hook, both members are disengaged and the opening / closing lever can be rotated only when the safety device is gripped and rotated.

[0003]

However, in this type of fixing hook, an opening / closing lever is generally provided on the abdomen side of the hook body, and the hook is located on the abdomen side of the hook body. Therefore, the object to be fixed must be positioned at the hook to remove the fixing hook. For example, in the case of a belt with a hook that is used in a wheelchair fixing device that fixes a wheelchair to a vehicle, if the wheelchair moves due to vibration while the vehicle is running, and a large tension is applied to the belt with a hook,
It may not be possible to immediately release the securing hook from the wheelchair frame. Therefore, in order to release the fixing hook, it is necessary to loosen the tension acting on the belt with the hook, move the fixing hook to the fixed object side, and then perform the releasing operation of the fixing hook.

Further, the hook of the frame of the fixing hook is always closed, and when the belt with the hook is fixed to the object to be fixed, the opening / closing lever is released while releasing the safety device of the fixing hook. Must be pivoted to open the hook of the frame body and then locked to the frame. Therefore, an object of the present invention is to solve the above problems, and to provide a fixing hook that is easy to attach and detach and has good workability.

[0005]

The object of the present invention is to provide a hook body provided with an arm support portion, and an intermediate portion rotatably pivotally supported by the arm support portion so that the opening is always substantially C-shaped. When the arm is biased in the opening direction by the first biasing means so as to maintain the state, and when the arm is closed in a substantially O-shape against the biasing force of the first biasing means. A fixing hook having a lever capable of engaging with the arm to prevent the opening and a second urging means for urging the lever in the arm engaging direction so as to maintain the closed state of the arm. Can be achieved.

Another object of the present invention is to close a hook body provided with a pair of arm supporting portions and a tip end surface of one swinging end portion so as to face each other and to be closed in a substantially O shape. And a pair of arms rotatably supporting the intermediate portion near the other swing end to the arm supporting portion so that the locking opening can be configured, and the locking opening has a substantially C shape. A first urging means for urging these arms in a direction of opening, and a shaft swingably attached to the hook main body so that one swing end engages with the arm and holds the arm in a closed state. This can be achieved by a fixing hook including a supported lever and a second urging means that urges the lever in a direction to engage with the arm.

[0007]

According to the above construction, the arm is substantially C in the normal state.
It becomes a letter-shaped opening state. Then, the swinging end of the hook body closer to the hook body than the intermediate portion supported by the arm support is pressed against the fixed object, and the arm is in a substantially O-shaped closed state against the biasing force of the first biasing means. When it is rotated in the direction of, the lever is oscillated by the urging force of the second urging means to a position for holding the arm in the closed state. Therefore, the arm whose opening is blocked by the lever is held in a state in which the fixed object is locked in the substantially O-shaped opening. Therefore, the fixing hook can be locked to the fixed object only by pressing the swinging end of the arm on the hook body side to the fixed object.

When the lever is swung against the urging force of the second urging means, the lever blocking the opening of the arm is disengaged and the arm is moved to the first urging means. The urging force of the element returns to the substantially C-shaped open state. On this occasion,
Since the arm opens in a substantially C shape, it is not necessary to move the fixing hook to the fixed object side when releasing the fixing hook. Therefore, even when tension is applied between the fixing hook and the fixed object, the fixing hook can be easily released.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1st of this invention shown in FIG. 1 thru | or FIG.
The fixing hook 1 according to the embodiment is a fixing hook suitable for a belt with a hook used in a wheelchair fixing device or the like for fixing a wheelchair to a vehicle.

The fixing hook 1 is integrally formed of a hook body 2 and an arm 3 which are formed into a predetermined shape by pressing, forging or casting a plate material, a lever 4 and a synthetic resin, and the hook body 2 is formed. A cover 8 for covering
It is provided with a torsion coil spring 5 and a compression coil spring 6 that are biasing means, and is fixed to the end of the webbing 7 of the hooked belt.

The hook body 2 has a substantially Y-shape having an insertion hole 16 for fixing the webbing, which is opened at one end, and a pair of arm supporting portions 11, 11 formed at the other end. And the arm 3 is attached to the tip of each arm support 11.
Are rotatably supported by pins 9. The pair of arms 3 and 3 are each formed in a substantially arc shape,
The hook body of the other hook body is formed so that the front end surfaces 14 of the outer rocking ends, which are the one rocking end portions, face each other and come into contact with each other to form the substantially O-shaped closed locking opening 17. The intermediate portion near the inner swing end 13, which is the side swing end, is rotatably supported by the arm support 11. Further, both ends of the pair of arms 3 and 3 have locking holes 2a of the hook body 2 and locking holes 3a of the arms 3, respectively.
By the torsion coil spring 5 which is the first biasing means held by the pin 9 so as to be locked to
7 is urged in the opening direction so as to always maintain the substantially C-shaped opening state.

Arm support portions 11, 1 of the hook body 2
1, lever supporting portions 12 extending outward are provided near the base portion of the lever 1.
Is swingably supported in the middle part. At one swinging end of each lever 4, the arms 3 and 3 are provided with an opening 17 for locking.
When they are closed in a substantially O-shape, they are engaged with the engaging portions 15 of the arms 3, respectively, and hold the arms 3, 3 in the closed state against the biasing force of the torsion coil spring 5. Therefore, the locking portion 4a capable of blocking the opening is formed. Further, the other swinging end of each lever 4 is formed with a pressing portion 4b which faces the opening 8a of the cover 8 and is pressed. Further, in the lever 4, the locking portion 4a is engaged with the engaging portion 15 of the arm 3 by the compression coil spring 6 which is the second biasing means interposed between the hook body 2 and the pressing portion 4b. The arm is always biased in the engaging direction.

That is, the arm 3 which has once released the engagement state between the engaging portion 4a and the engaging portion 15 by pressing the pushing portion 4b of the lever 4, as shown in FIG. Due to the urging force of the coil spring 5, the arms 3 are in a substantially C-shaped open state in a normal state. This time,
The inward swing ends 13, 13 of the arms 3, 3 on the hook body side of the intermediate portion supported by the pin 9 extend inwardly of the locking opening 17. Incidentally, these arms 3, 3
Even if an attempt is made to open it by a predetermined angle or more, the locking portion 4a of the lever 4 comes into contact with the outer side surface of the lever 4 and the rotation thereof is restricted, so that it does not open more than necessary.

Next, a method of using the fixing hook 1 will be described. First, the operator holds the cover 8 of the fixing hook 1, and the frame 20 is fixed to the frame 20 of the wheelchair, which is an object to be fixed, so that the frame 20 has the inward swinging ends of the arms 3 and 3. By pressing 13 and 13, the arms 3 and 3 are rotated against the urging force of the torsion coil spring 5 in a direction in which the arms 3 and 3 are in a substantially O-shaped closed state (arrow A direction in FIG. 2).

The front end surfaces 14, 14 of the outer swing ends of the arms 3, 3 face each other and come into contact with each other to reach a position forming a substantially O-shaped closed locking opening 17. When the arms 3 and 3 are rotated, FIG.
As shown in FIG. 3, the engaging portion 4a of the lever 4, which is constantly urged in the arm engaging direction (the arrow B direction in FIG. 3) by the compression coil spring 6, slides in contact with the outer surface of the arm 3 to engage with the engaging portion 4a. By reaching the part 15 and engaging the engaging part 15, the lever 4 blocks the opening in order to hold the arms 3, 3 in the closed state. Therefore, the arms 3 and 3 whose opening is blocked by the lever 4 have a substantially O-shaped locking opening 17
The frame 20 is held in a locked state.

Accordingly, the arms 3, 3 are attached to the frame 20.
The fixing hook 1 can be locked to the frame 20 only by pressing the inward swing ends 13, 13. Therefore, the hooked belt of the wheelchair fixing device using the fixing hook 1 can be easily attached when the wheelchair is fixed to the vehicle. The lever 4 is constantly urged in the arm engaging direction by the compression coil spring 6 and is covered by the cover 8 so that the engagement with the engaging portion 15 of the arm 3 is inadvertently released. Has been prevented.

When releasing the fixing hook 1, the pressing portion 4b is resisted against the urging force of the compression coil spring 6.
When the lever 4 is swung by pushing, the engagement between the locking portion 4a of the lever 4 and the engagement portion 15 of the arms 3 and 3 which prevent the opening of the arms 3 and 3 is released. The arms 3 are returned to the substantially C-shaped open state by the biasing force of the torsion coil spring 5.

At this time, since the arms 3 and 3 open in a substantially C shape, it is not necessary to move the fixing hook 1 to the frame 20 side when releasing the fixing hook 1. Therefore, even when the wheelchair moves due to vibration or the like while the vehicle is traveling and a large tension is applied to the hooked belt, the fixing hook 1 can be immediately released from the frame 20 of the wheelchair. That is, the fixing hook 1 includes the frame 2
It is possible to easily attach / detach the belt with hook to / from 0.

In the first embodiment described above, the fixing hook 1 is fixed to the end of the webbing 7 of the belt with a hook and used for the wheelchair fixing device. It is needless to say that the present invention is not limited to this and can take various forms. The locking hook 21 which is the fixing hook based on the second embodiment of the present invention shown in FIGS. 5 to 9 shows an example of use as a locking means of a bicycle or a motorcycle. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

The locking hook 21 is similar to the fixing hook 1 of the first embodiment, and the hook main body 22 and the arm 3 formed into a predetermined shape by pressing, forging or casting a plate material, and the lever. 4 and a cover 28 that is integrally molded of synthetic resin or the like and covers the hook body 22.
And a torsion coil spring 5 and a compression coil spring 6 which are urging means. As shown in FIG. 8, the locking hook 21 is directly inserted between the tire 29 and the rim 33 to prevent the wheel from rotating. As shown in FIG. 9, there is a locking method in which the spokes 35 of the wheels are fixed via a frame 34 of a bicycle or a motorcycle.

The hook main body 22 has a substantially Y-shape having a pair of arm supporting portions 31 and 31 provided at one end, and the arm 3 has a pin 9 at the tip of each arm supporting portion 31.
Are rotatably supported by each. Further, a locking mechanism 27 is formed at a substantially central portion of the hook body 22. The locking mechanism 27 is driven by a cam piece 26 rotatable by the key 30 and a cam surface of the cam piece 26 when the key 30 inserted from the key hole 25 of the cover 28 is fitted. Cam rod 23 and the cam rod 2
And a coil spring 24, which is an urging unit arranged to press one end of 3 into contact with the cam surface of the cam piece 26,
The other end of the cam rod 23 is brought into contact with the inner wall surface of the lever 4 on the side of the pressing portion 4b according to the rotational position of the cam piece 26.

That is, in the unlocked position of the locking mechanism 27 in which the cam rod 23 is located on the cam surface of the cam piece 26 shown in FIG. 6, the pressing portion 4b of the lever 4 is pressed to operate the locking portion 4a. In the arm 3 which is once released from the engagement state with the engaging portion 15, the arms 3 and 3 are always in a substantially C-shaped open state by the biasing force of the torsion coil spring 5.

Next, a method of using the locking hook 21 will be described by taking the locking method shown in FIG. 8 as an example. First, in order to lock the bicycle wheel, which is the fixed object, as shown in FIG.
As shown in FIG. 3, the inner swinging ends 13, 13 of the arms 3, 3 are pressed against the tire 29, and the arms 3, 3 are closed in a substantially O-shape against the biasing force of the torsion coil spring 5. Is rotated in the direction (arrow A direction in FIG. 6).

Then, the front end surfaces 14, 14 of the outer swing ends of the arms 3, 3 face each other and come into contact with each other to reach a position where a closed O-shaped locking opening 17 is formed. When the arms 3 and 3 are rotated, the locking portion 4a of the lever 4 engages with the engaging portion 15 as shown in FIG. 7, so that the lever 4 closes the arms 3 and 3. Block the opening to hold. Therefore, the arms 3, 3 whose openings are blocked by the levers 4 are engaged with the tires 29 and the rims 33 of the wheels and the spokes 35 which are inserted into the substantially O-shaped locking openings 17, so that the wheels rotate. Prevent.

Further, when the cam piece 26 is rotated about 90 degrees counterclockwise in the figure by the key 30 to bring the locking mechanism 27 into the locked state, the cam rod 23 causes the cam piece 23 to move.
The cam surface of 6 causes the outer surface of the hook body 22 to follow, and moves to the locking position shown in FIG. 7 against the biasing force of the coil spring 24. Therefore, the other end of the cam rod 23 contacts the inner wall surface of the lever 4 on the side of the pressing portion 4b.

Accordingly, the lever 4 is constantly biased in the arm engaging direction by the compression coil spring 6 and is rotated in the direction in which the engagement with the engaging portion 15 of the arm 3 is released by the cam rod 23. Is prevented,
The locking hook 21 is locked. When the locking hook 21 is unlocked, the key 30 rotates the cam piece 26 about 90 degrees in the clockwise direction in the drawing to bring the locking mechanism 27 into the unlocked state. The cam rod 23 driven along the surface is moved inward of the hook body 22 by the biasing force of the coil spring 24.
Then, since the lever 4 can rotate in the direction in which the engagement with the engaging portion 15 of the arm 3 is released, the pressing portion 4b is pressed against the urging force of the compression coil spring 6, and the lever 4 is rotated. When 4 is swung, the engagement between the locking portion 4a of the lever 4 that blocks the opening of the arms 3 and 3 and the engagement portion 15 of the arms 3 and 3 is released, and these arms 3 and 3 move. By the biasing force of the torsion coil spring 5, it is possible to return to the substantially C-shaped open state.

Therefore, according to the locking hook 21 in the second embodiment, it is possible to provide a locking means that can be easily locked and unlocked for locking a bicycle or a motorcycle. In each of the above-mentioned embodiments, the inner swing end is formed so that the substantially O-shaped closed locking opening 17 can be formed by the end faces 14 of the outer swing ends facing and abutting each other. Although a pair of arms 3 each of which has an intermediate portion near 13 is pivotally supported by the arm supporting portion 11 (31), the pair of arms is not necessarily required. For example, if instead of the one arm 3, a part of the hook main body is extended in a substantially semi-circular shape and its tip end surface is located substantially on the center line of the fixing hook, the other tip end surface is The front end surface 14 of the outer swing end of the arm 3 faces and abuts, so that a substantially O-shaped closed locking opening can be formed, and the same effect as each of the above embodiments can be obtained. .

The fixing hook according to the present invention is not limited to the shapes and configurations of the hook main body, the arm, the lever, the first urging means and the second urging means in each of the above embodiments. It goes without saying that various shapes can be adopted based on the spirit of the present invention.

[0029]

That is, according to the fixing hook of the present invention,
In a normal state, the arm is in a substantially C-shaped open state, and the fixing hook is fixed by simply pressing the swing end on the hook body side from the intermediate portion supported by the arm support to the fixed object. Can be locked to an object.

When the lever is swung against the urging force of the second urging means, the arm is opened by the urging force of the first urging means into a substantially C-shaped open state. There is no need to move the fixing hook to the fixed object side when releasing the hook. Therefore, even when tension is applied between the fixing hook and the object to be fixed, the fixing hook can be easily released.

Therefore, it is possible to provide a fixing hook which is easy to put on and take off and has good workability.

[Brief description of drawings]

FIG. 1 is a partial sectional front view of a fixing hook according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional front view for explaining a usage state of the fixing hook shown in FIG.

FIG. 3 is a partial cross-sectional front view of the fixing hook shown in FIG. 1 with a part broken to explain a usage state.

FIG. 4 is an overall side view of the fixing hook shown in FIG.

FIG. 5 is a partial sectional front view of the locking hook according to the second embodiment of the present invention.

6 is a front view of relevant parts for explaining a use state of the locking hook shown in FIG.

7 is a front view of relevant parts for explaining a usage state of the locking hook shown in FIG.

FIG. 8 is a schematic explanatory view showing a state when the locking hook shown in FIG. 5 is fixed to a wheel and locked.

9 is a schematic explanatory view showing a state in which the spokes of the wheel are fixed via the frame with the locking hook shown in FIG.

[Explanation of symbols]

 1 Hook for Fixing 2 Hook Main Body 3 Arm 4 Lever 4a Locking Part 5 Torsion Coil Spring 6 Compression Coil Spring 7 Webbing 8 Cover 11 Arm Supporting Part 12 Lever Supporting Part 13 Inner Swing End 14 Tip Surface 15 Engaging Part 17 Locking Opening

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoto Fujii 516 Nanasawa, Atsugi City, Kanagawa Prefecture Kanagawa Prefectural Rehabilitation Project Group (72) Inventor Masataka Saito 516 Nanasawa, Atsugi City, Kanagawa Prefectural Rehabilitation Kanagawa Prefecture Within the business group

Claims (1)

[Claims] 1. A hook main body provided with an arm supporting portion, and a first urging means so that an intermediate portion is rotatably supported by the arm supporting portion so as to always maintain a substantially C-shaped open state. And an arm that is biased toward the opening direction by the first biasing means, and when the arm is in a substantially O-shaped closed state against the biasing force of the first biasing means, the arm is engaged to prevent the opening. A fixing hook including a movable lever and a second urging means for urging the lever in the arm engaging direction so as to maintain the closed state of the arm.