JPH02256590A - Hooking device for harness - Google Patents

Abstract

PURPOSE: To automatically release a connecting element in an emergency by pivotally supporting a hooking element free to connect to and disconnect from the connecting element such as steel, etc., on a support plate installed on a body of a user and providing a holding means to release the connecting element at the time when force higher than specified force works within the support plate. CONSTITUTION: This hooking device used by a wind surfer is constituted of a support plate 1 to be installed on a body of a user by a harness and a hooking element 2. The hooking element 2 is free to be engaged with steel both ends of which are moored to a rigging element such as a wishbone, etc. The support plate 1 has a pair of leg parts 5 on its central part, and the hooking element 2 is pivotally supported by a shaft 8 between a pair of the leg parts 5. Additionally, a holding means A to release the steel at the time when force applied on the hooking element 2 by the steel becomes higher than a specified value and an automatic recovering means B to function to return the hooking element 2 to an original state after releasing the connecting element 3 are provided within this support plate 1.

Description

[Detailed description of the invention] It is.

When engaging in certain suit activities that use the wind as a means of propulsion, such as windsurfing, speed sailing, sailing, etc., in order to help the person better resist the forces that the wind exerts on the sail, It becomes necessary to use a harness. and <K.

When operating a windner twin or speed sail,
The performer tilts the sail toward the side that receives the wind and tries to make the sails hang slightly below it. In this case, it is the weight of the person that allows the sail to balance against the force of the wind.

However, since a large muscle force is induced in this case, in order to reduce this force, it is necessary to use a harness that can disperse the force throughout the body.

For this purpose, it is also already known to use hook devices that are connected to the torso of the harness user. The hook device consists of a support plate and a seven-socket element), the hook element being rounded and holding a connecting element fixed to the rigging, the ends of which are connected to each other by means of a "witsipone" or the like. is moored to the rigging element to form a knot that fits within the hook element.

The hook elements are usually opened downwards so that an angle is formed which allows for better retention of the connecting element.

This type of mooring method involves some inconveniences. A user who is unable to exert the force necessary to release the coupling element and thus unhook the hook element may become trapped in his rigging under difficult circumstances (gusts of wind, loss of balance) and lose the sail. If you fall inside, you may be injured if you fall.

Observing the condition of the drop to the limp, the drop is due to a change in the direction of the tension applied to the hook element rather than an increase in the tension applied to the hook element by the connecting element. I understand. in fact,
Under current conditions of use, the connecting element makes an angle of approximately 800 degrees to the axis of the user's body, and when the user's body falls, the connecting element changes direction and the user's body approach the axis of

It is also already known that some devices have been developed to solve some of these inconveniences. For example, French patent 2,345,172.2473.2
No. 95.2,550,455 describes that, with a device of this type, it is possible to open the hook part articulated on the support and thereby release the connecting element. can.

In order to run and open it, the latch must be manually removed, thus requiring the user to use one hand.
, with the disadvantage that there is a risk of losing control of the rigging.

French Patent No. 2,513,353 discloses a device that automatically opens the hook element, but this device only opens the hook when the tension on the connecting element on the hook element is released. Unable to release element.

U.S. Pat. No. 4,378,614 discloses a self-opening hook element in which a retaining elastic force opens when the tension exerted by a connecting element exceeds a certain threshold. It looks like this. Therefore, in this device, the force applied to the hook element must increase in order for it to open, and it will not open any more if the orientation of the connecting element changes.

Moreover, all these devices have articulated hook elements that require the lid to be manually re-rigged after opening, making it impossible to hold the rigging with both hands, and This may lead to loss of financial control.

The present invention overcomes these inconveniences by providing a device that holds or releases a coupling element in response to a threshold of force couples applied to the hook element, rather than depending on a threshold of tension applied to the hook element. The device utilizes changes in the length of the tortoise arm caused by changes in the direction of the connecting element within the hook element, and provides a constant The present invention also provides a device for automatically restoring the hooked condition of the hook element.

The hook device according to the invention is a hook device for a harness of the type described above, which comprises a support plate fixed to a harness connected to the user's torso and a hook element articulated thereon. The hook is configured such that the tension applied to the hook element by the connecting element utilizes the lever arm to increase the length of the jump as the angle that the direction of the tension makes with the axis of the user's body decreases. It has an element.

The other side has retaining means and automatic restoring means acting on the rotation of the hook element, the retaining means being such that the moment of tension exerted by the connecting element is essentially equal to the moment of force exerted by the retaining means. The release of the coupling element occurs when the coupling element becomes larger, and the shape of the hook element ensures that the tension does not necessarily increase as the length of the lever arm increases, and the automatic restoring means ensures that the coupling element releases This device is characterized in that the 7-piece element functions to return to its original state after being removed.

Therefore, the retention means may become dislodged not simply when the tension exerted by the connecting element exceeds a certain value, but also when the user falls or intentionally tampers with the lever on the hook element. It will fail when the length of the lever arm is increased by the connecting element in response to the displacement of the arm. This avoids the inconvenience associated with release only occurring as the force increases beyond a certain threshold, ie requiring more subtle adjustments.

According to one simple embodiment of the invention, the hook element has a circular central part or center part, in the center of which is provided a hollow hole through which the articulating shaft passes; A hook leg extends from this central part, and this hook leg is
On its inner surface, in an articulated manner as it moves away from the ring center,
It has so-called connection area, release area, hook area and ejection area.

The connection area is the area in which the connecting element is never supported. This area connects the release area to the central part. The hook area is the area on which the coupling element rests during normal use of the device.

This area has a shape such that as the connecting element moves within this area, the lever arm changes only slightly, so that unintentional unhooking is prevented.

The hook element therefore remains in the closed position. When the coupling element is moved into the release or ejection area, the lever arm extends and the hook element opens.

According to a preferred embodiment of the invention, the holding means, which function depending on the dark value of the force couple, are constituted by a contact mechanism guided by a guide mechanism and always subjected to the action of elastic means connected thereto. and the contact mechanism, in the closed position, fits partially within a cavity disposed in a portion of the part rotatably connected with the hook element.

According to one simple embodiment of the invention, the contact mechanism and the elastic means are each constituted by a cylinder and a spring whose axis is parallel to the articulation axis of the hook element, the cylinder being arranged at the end of the spring. The cylinder-spring assembly is placed in a section and guided by a guide piece, and the cylinder-spring assembly is seated in a hole drilled in the support plate and is perpendicular to the part with one end pivotally connected with the hook element. The cylinder is connected to the cylinder, and a cavity is disposed therein so that the cylinder partially opens when the seven-piece element is in the closed position.
The hole into which it fits, also has an axially displaceable mechanism at its other end, such as a threaded plug on which a spring rests.

The spring presses the cylinder with the hook element against a rotatably connected part, so that in the closed position of the hook element, the cylinder partially fits into the cavity disposed inside the #element. try to Rotation of the hook element is therefore impossible unless a sufficiently large couple is applied thereon that the spring cannot resist ejecting the cylinder out of the cavity. This force couple forms a threshold from which release of the hook element occurs. The screw type plug is
By changing the degree of compression of the spring, it is possible to adjust this threshold to a sagging value.

Furthermore, the automatic restoring means can consist of a contact mechanism guided by a guide mechanism and constantly under the action of an elastic means connected thereto, and the nuclear contact mechanism can be rotatably coupled together with the hook element. a groove with a cam-like profile disposed within a portion of the part.

The restoring means may be similar to the retaining means of the hook element. That is, the contact mechanism consists of a cylinder with an axis parallel to the axis of rotation of the hook element, which cylinder, guided by a guide piece, rests on a spring, so that the assembly is opened into a support plate. and one end thereof is placed in a hole communicating at right angles to the part to which it is pivotally connected together with the hook element. Also arranged in this part is a groove, the bottom of which has a cam-like profile, against which the above-mentioned cylinder is pressed, and in which the hook element is closed. The configuration is such that the distance between the cylinder and the hook element is minimal when in the fixed position and increases as the element pivots.

The spring always applies pressure to the cylinder and tends to move toward the axis of rotation.

The more the hook element pivots in the opening direction, the further the cylinder moves away from the axis of rotation and compresses the spring. The force generated by this will therefore be in force when attempting to return the hook element to its initial position. In the first position,
The tension exerted on the hook element by the coupling element ceases.

In particular, this device has two positions: a closed position, in which the contact mechanism is arranged to receive it and fits within the cavity, and a maximum open position, in which the contact mechanism still rests on the bottom of the groove of the cam-like profile. A stop is provided to limit pivoting of the hook element between the hook elements.

In fact, the angular stroke of the hook element is determined to the maximum open position in which the contact element rests in the groove with the bottom of the cam-shaped profile and the release threshold so that the restoring function is activated. It is necessary for the contact element of the retaining means to fit into the cavity and be confined between a closed position and a resting position.

The retention means and restoring means of the hook element may consist of a single cylinder-spring assembly, and in some cases one
1llfli means, in which the cavity and the groove of the cam-like profile are arranged flush with the diametric plane of the part of the part pivotally connected with the hook element, such that in the closed position of the hook element the cavity forms a cylinder. It is advantageous for the hook element to face the bottom of the groove, and for k to be such that the hook element rests on the bottom of the groove when the hook element is rotating.

Therefore, when the connecting element is exerting too large a couple force on the hook element, the spring no longer resists the pressure of the cylinder, and the cylinder comes out of the cavity and comes into contact with the bottom of the groove of the cam-like profile. - the groove tends to move the cylinder away from the axis of the part pivotally connected to the hook part, thereby increasing the compression of the spring to restore the hook element to its initial position; This allows a single cylinder-spring assembly to perform the holding and restoring functions, reducing the bulk of the device.

According to one preferred embodiment of the device, the cavity and groove are arranged in the thickness of the annulus of the hook element.

Therefore, the hook element does not necessarily have to be pivotally connected to its articulation axis, which can simplify the embodiment of the device, and the cavity and the cam-shaped groove can be arranged on its axis. It is possible to omit the use of blocking parts such as locking pins for the purpose of fixing them, as is the case when they are arranged in the same manner.

In any case, the invention will be better understood by the following description, which refers to the accompanying schematic drawings, which show by way of example several embodiments of the device. However, these embodiments do not limit the present invention.

FIG. 1 shows a windsurfer using the device according to the invention.

The device consists of a support plate 1 and a hook element 2 articulated thereon. The support plate 1 is connected to the user's torso by a harness and is placed between the pelvis and sternum of the beam user. Engaged in the hook element 2 supported by the support plate 1 is a connecting element 3 consisting of a rope, both ends of which are moored to rigging elements such as "witshi bones", forming a kind of buckle. do. Therefore, the user
(hanging under the sail), can use their own weight to balance against the force exerted on the sail by the wind, and a harness can then distribute that force across the body, and is therefore used Can reduce muscle strength.

FIG. 2 shows a support plate with hook elements 2. FIG. The support plate l, which has a curved shape, has an opening 4 at its end and a central part, which is thickened and has two legs 5, in which a central part is inserted. A collar is provided and the holder constitutes a part 7 in which the hook element 2 is articulated by a shaft 8 supported by the holder part 7.

The reason why the hook element 2 is articulated in this way is to enable the coupling element 3 to be released. The opening 4 serves to secure the support plate l to the harness.

The support plate 1 has a length and a curved surface close to the user's torso in order to make the device comfortable.

FIG. 3 shows the hook element 2 provided in the support plate 1 and articulated in the bearing part 7, which element has, on the one hand, an articulating shaft 8 therein; It has a rounded central part or ring core 9 with a fitting borehole, the other being fixed to the ring center 9 and holding the connecting element 3 on its inner side. It has a curved hook leg 10.

The inner surface of the hook leg portion 10 has a plurality of regions, each successively starting from the ring center portion 9: a connection region 10 a s release region 10
b, a hook area 10C1 and a discharge area 10d.

The connection area 10a is an area in which the connecting element 3 is never supported. Release area 1 by this area
0b is connected to the central part 9.

The release area 10b is released when the connecting element 3 is dragged forward by the rigging or when the user tries to release the connecting element 3 by using force such as rotating the pelvis. An area designed to be supported near the axis of a person's body. In this release area 10b, from the hook area 10c to the connection area 10aK
The progressively varying tension increases the leverage available and allows the coupling element 3 to disengage quickly and effectively. Hook area 10 cg, the area on which the connecting element 3 rests when the hook device is actually in use, i.e. when the direction taken by the connecting element 3 takes an angle of approximately 806 to the axis of the user's torso. . This area 1
At 0c, the lever arm utilized by tension is of such length that the connecting element 3 can change its direction by a slight K without increasing the lever arm significantly enough to risk opening the hook element 2. , the ejection area 10d is an area that continues with the hook area 10cK. The role of this area is to lengthen the hook leg 10 and to hold the connecting element 3 inside the hook element 2. This discharge area 10
In d, the lever arm utilized by the tension is larger and larger so that the ejection of the connecting element 3, which opens when the hook element 2 is opened, is not obstructed.

Because of these areas, the hook element 2 is able to open against the force exerted on it when the lever arm increases, rather than when the tension on this arm increases. It will be. This opening can occur even when the force is decreasing if the increase in the lever arm is large enough and is due to a change in the direction of the connecting element 3.

The shape of the hook element 2 is such that in the open position, the connecting element 3 can pop out. moreover,
The support part 7 stops the hook element 2 in the maximum open position 1.
It has 8.

Figures 4.5 and 6Kii show the holding means A and the automatic restoring means B which the device is equipped with.

As shown in FIG. 4, 1 these means can be one and the same and can be in the form of bearings, but preferably they are cylinders 11 resting on springs 12, which guide the cylinders 11. KL is separated by means 13 such that the axis of cylinder 11 is parallel to articulation axis 8, ie transverse to the direction of displacement under the action of spring 120.

Each cylinder 11-spring 12 assembly is inserted into a hole 14 drilled in the thickness of the leg 5 of the support plate 1 and the support plate 7 with one end thereof communicating at right angles to the axis 8. There is.

A cavity 16 is arranged in the shaft 8, which cavity, when the hook element 2, in which the coupling element 3 is held, is in the closed position, the cylinder 11 of the holding means A.
facing. Furthermore, a groove is arranged in the shaft 8, the bottom of which has the contour of a cam 17, in which the cylinder 71 of the restoring means B rests. A retaining pin 19 fixes the shaft 8 and the hook element 2 so as to rotate together.

When the hook element 2 is in the closed position, the cylinder 11 of the retaining means A partially fills the cavity 16 under the action of a spring 120 which exerts a constant pressure on the cylinder 11 against the shaft 8. It's stuck inside. The coupling element 3 exerts a couple force on the hook element 2, so that the spring 12 can no longer resist the pressure of the cylinder 11, so that the cylinder 11 is ejected from the cavity 16 as a result of the rotation of the shaft 80 and the hook is released only when 20 rotations of the element is not possible. At the same time, by rotation of the shaft 8, a groove 17 with a force-shaped profile is formed on the cylinder 11 of the automatic restoring means B, in which the spring 12 is inserted.
Apply pressure opposite to that applied by . The more the hook element 2 pivots, the more the cylinder 11 of the automatic restoring means B
is pressed back by the cam-like contour at the bottom of the groove 17;
Spring 12 is compressed. The force thus generated causes the hook element 2 to return to its initial position when the tension exerted thereon by the connecting element 3 ceases.

What must be noted in and \ is that the restoring force of the hook element 2 is small and exerts its effect only after the coupling element 3 is released.

Moreover, even if the cylinder 11 of the holding means A pops out of the cavity 16, it does not exert any restoring force on the hook element 2, and therefore the release of the coupling element 3 is only possible when the dark value of the couple is exceeded. It is done suddenly.

FIG. 7 shows a variant of the embodiment of the device according to the invention. The shaft 8 is provided in the same diametric plane with a cavity 16 and a groove 17 whose bottom has a cam-shaped profile. child\
Now, only a single cylinder-11-spring 12 assembly is required to perform the retention and restoring functions sequentially.

Thus, in the closed position of the hook element 2, the cylinder 11 partially fits into the cavity 16, and when this hook element 2 rotates, it is ejected therefrom and the cam-shaped profile Comes into contact with the groove.

A locking pin 19 fixes the ° shaft 8 and the hook element 2 so as to rotate together.

Retention and restoration occur as previously described.

81st! i! ! i' shows one preferred embodiment of the hook device according to the invention. cavity 1
6 and cam-shaped contour grooves! Reference numeral 7 indicates a hook element 20 disposed in a trap on the outer periphery of the wheel center portion 9. In the closed position of the hook element 2, the ring center 9 furthermore extends to the wall surface 2 of the support plate l.
It is provided with a leg portion 22 that is K so as to correspond to zero. moreover,
The receptacle 7 of the hook element also has a wall 18 against which the base of the outer surface of the hook leg 10 rests when the hook element 2 is in its maximum open position.

In the embodiment of the device shown in FIG.
has a hemispherical or semi-cylindrical upper part contacting the cavity 16, and the mechanism further comprises a bore at its base, into which the end of the spring 12 fits. The contact mechanism 21-spring 120 assembly is recessed in the same vertical plane as the hook element 2, and the contact mechanism 21 is positioned relative to the cavity 16 and groove 17 depending on the angular position of the hook element 20, as already explained. Right angle.

This variant has the advantage of simplifying the manufacture of the device, since no fixing means are required to facilitate the rotation of hook element 2 and shaft 8. Furthermore, the diameter of the shaft 8 is reduced, and the diameter of the leg 5 is also reduced since it is not necessary to include the hole 14, and the hole 14 is arranged in the same vertical plane as the hook element 2, that is, between the two legs 50. be able to. This device allows for a significant reduction in device volume.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the device being used by a windsurfer. FIG. 2 is a perspective view of the hook device. FIG. 3 is a vertical sectional view of the hook element taken along the line ■-■ in FIG. 2. FIG. 4 is a vertical cross-sectional view of the retaining means and restoring means of the hook element. FIG. 5 is a vertical sectional view of the holding means taken along the line V--V in FIG. 4. FIG. 6 is a vertical cross-sectional view of the restoring means along the line Vl--Vl in FIG. 4. FIG. 7 is a vertical sectional view of a modification of the embodiment of the invention. FIG. 8 is a vertical sectional view of another modification of the embodiment of the invention. l... Support plate, 2... Hook element, 3... Connecting element, 5... Leg portion, 7... Support portion, 8...
・Shaft, 9...Central part (wheel center part), 10a...Connection area, 10b...Release area, 10c,...7-touch area 110d...Discharge area, 11...Cylinder, 1
2...Spring, 13...Guiding means, 14...
- Hole, 16... Cavity, 17... Cam-shaped contour groove, 21... Contact mechanism.

Claims (1)

[Claims] 1. A harness hook device of the type that has a support plate (1) fixed to a harness connected to a user's torso, and a hook element (2) connected thereon, comprising: For one thing,
The tension exerted on the hook element (2) by the connecting element (3) utilizes the lever arm to increase the length of the arm when the angle that the direction of the tension makes with the axis of the user's body decreases. It has a hook element (2) shaped like this;
It has retaining means (A) acting on the rotation of the hook element (2) and self-righting means (B), the retaining means (A) being such that the moment of tension exerted by the connecting element (3) is essentially The release of the connecting element (3) takes place when the moment of force applied by the holding means (A) increases, and the shape of the hook element (2) increases the length of this arm. The automatic restoring means (B) also function to ensure that the hook element (2) returns to its taut condition after the coupling element (3) has been released. A hook device featuring: 2. The hook device according to claim 1, wherein the hook element (2) has a circular central portion or ring center portion (9), and a boring is provided in the center thereof through which the connecting shaft (8) passes. A hook leg (10) extends from the central part (9), and the hook leg has, on its inner surface, a continuous groove extending away from the ring center (9). Connection area (10a
), a release area (10b), a hook area (10c), and a discharge area (10d). 3. A hook device according to claim 1, in which the holding means, which functions depending on the threshold value of the force couple, is guided by the guiding mechanism (13) and always connected to the elastic means (12).
is constituted by a contact mechanism (11) which, in the closed position, acts on the hook element (2).
hook device, characterized in that it partially fits into a cavity (16) arranged in a part of the part which is rotatably connected with ). 4. The hook device according to claim 3, wherein the contact mechanism and the elastic means each correspond to the articulation shaft (2) of the hook element (2).
It consists of a cylinder (11) and a spring (12) with an axis parallel to ) - the spring (12) assembly is housed in a hole (14) drilled in the support plate (1) and has one end connected to the part rotatably connected to the hook element (2); communicating at right angles and in which a cavity (16) is arranged, in which the cylinder (11) partially fits when the hook element (2) is in the closed position; Moreover, the hole (14) further includes:
A hook device characterized in that the other end is provided with an axially displaceable mechanism, such as a threaded plug (15) surmounted by a spring (12). 5. A hook device according to any one of claims 1 to 4, in which the automatic restoring means is guided by a guide mechanism (13) and is constantly under the action of elastic means (12) connected thereto. It consists of a mechanism (11), and said contact mechanism (11) abuts against a groove (17) of cam-like profile arranged in a part of the part pivotally connected with the hook element (2). A hook device characterized by: 6. A hook device according to any one of claims 3 to 5, wherein the restoring means are similar to the retention means of the hook element (2), i.e. the contact mechanism is similar to the retention means of the hook element (2). ) whose axis is parallel to the axis of rotation of the cylinder (
11) and guided by a guide part (13), the cylinder (11) rests on a spring (12) and the assembly is drilled into the support plate (1) and Its one end is placed in a hole (14) leading at right angles to the part pivotally connected with the hook element (2), and a groove (17) is arranged in this part. Its bottom part has a cam-like profile against which the cylinder (11) is pressed;
the distance between the cylinder (11) and the hook element (2) is minimal when the hook element (2) is in the closed position;
A hook device also characterized in that the element (2) has a shape that increases when pivoted. 7. A hook device according to any one of claims 1 to 6, wherein the retention means and the restoring means of the hook element (2) are constituted by a single cylinder (11)-spring (12) assembly. , and optionally with adjustment means,
A cavity (16) and a groove (17) with a cam-like profile form a hook element (
hook element (2) is arranged flush with the diametric plane of the part of the part which is rotatably connected with the hook element (2);
characterized in that in the closed position of the cavity (16) faces the cylinder (11) and that when the hook element (2) is rotating the hook element (2) rests against the bottom of the groove (17). hook device. 8. A hook device according to any one of claims 3 to 7, wherein the cavity (16) and the groove (17) are arranged in the thickness of the annulus (9) of the hook element (2). A hook device characterized by: 9. Hook device according to any one of claims 3 to 8, characterized in that the contact mechanism (21) has a hemispherical or semi-cylindrical upper part, and the mechanism is provided with a boring in its bottom part. A hook device characterized in that the end of the spring (12) fits within the hook. 10. Hook device according to any one of claims 1 to 9, including a stop (18, 20) for limiting the pivoting of the hook element (2) between the closed position and the maximum open position.
).