JP3117151U - U-shaped hook with return - Google Patents

Abstract

Disclosed is a hook that is always open, and the detachment from a hook body of a string locked to the hook body can be almost completely prevented.
A protrusion 4 is provided on a free end side of a hook body 2 formed in a U shape so as to protrude downward toward a fixed end side. On the fixed end side of the hook body 2, a lower protrusion 5 that protrudes downwardly toward the free end side is provided so as to close a gap between the protrusion 4 and the fixed end side of the hook body. The protrusion 4 and the lower protrusion 5 prevent the suspension rope 7 of the seat 6 from being detached from the hook body 2.
[Selection] Figure 1

Description

  The present invention relates to a U-shaped hook with a hook for locking the middle part of the rope for hanging the seat to prevent the slack when the seat is stretched along the wall surface of the ship, for example. In particular, the present invention relates to a U-shaped hook with a bar which can be almost completely prevented from being detached from a hook of a rope while being a normally open hook.

  Conventionally, for example, when a seat is stretched along a wall surface of a ship, it is customary to stretch the seat using a rope for hanging the seat. Since the part is slack, it is usual to lock the hook to prevent the rope from slackening.

In this case, a method of using a completely closed hook such as a D link or an eye plate fixed to the wall surface, a method of fixing a hook having a movable piece such as a carabiner to the wall surface, a C link, a U-shaped hook, etc. There is a method of using a normally open type hook fixed to a wall surface.
Website of Mizumoto Machine Mfg. Co., Ltd. URL: http://www.mizumoto-mm.co.jp

  Among the conventional methods, the method using a completely closed hook has the advantage that the structure of the hook is simple and there is no possibility of failure because there is no moving part. Since the sheet must be passed through the hook, there is a problem that the tensioning operation of the seat is not easy and the removal of the rope is not easy.

  On the other hand, the method using a normally open hook has the advantage that the hook structure is simple and there is no moving part, so there is no risk of failure and the rope can be locked later. However, since it is always open, there is a fatal problem that if the seat is blown by wind, the rope can easily come off the hook.

  On the other hand, in the case of a method using a hook having a movable piece, the rope can be locked later, and the rope can be easily detached from the hook, and the sheet can be blown by the wind. The rope has the excellent advantage that it will not come off the hook, but because it has a movable piece, it is structurally weak, inferior in durability, and structurally complicated, There is a problem of high costs. In particular, heavy machinery is often used for other work in the ship's harbour, and at that time, a large impact may be applied to the hook fixed to the wall surface. It becomes a drawback.

  The present invention has been made in view of the current situation, and is as robust as an eye plate and the like, and can be easily engaged and disengaged like a normal always-open type hook. It is an object of the present invention to provide a U-shaped hook with a turn that can prevent the string body from being detached from the hook body to the same extent.

  Another object of the present invention is to provide a U-shaped hook with return that can more reliably prevent the string body from being detached from the hook body.

  Another object of the present invention is to provide a U-shaped hook with a return that can sufficiently secure the arrangement space of the string body without increasing the size of the hook body more than necessary.

  Another object of the present invention is to provide a U-shaped hook with a return which can prevent the detachment of the string body from the hook body mainly by the protrusions, and can more effectively prevent the detachment of the string body from the hook body. There is.

  Another object of the present invention is to provide a U-shaped hook with a return that can drop a cord body that collides with a protrusion or a lower protrusion to be detached from the hook body to the bottom of the hook body as quickly as possible. It is in.

  Another object of the present invention is to solve the problem that the string that collides with the protrusion or the lower protrusion while trying to detach from the hook body bites into the base portion of the protrusion or the lower protrusion to the hook body and cannot be separated. It is to provide a U-shaped hook with a bar that can be prevented.

  Still another object of the present invention is to provide a U-shaped hook with a return that can easily lock the string body to the hook body and can effectively prevent the string body from being detached from the hook body.

  In order to achieve the above object, the present invention provides a hook body in which a fixed end side and a free end side are connected in a U-shape; provided on the outer surface of the hook body on the fixed end side; A fixing plate for fixing; and a projection for returning the string body protruding from the free end side of the hook body toward the fixed end side are provided.

  The present invention is also characterized in that the hook main body is provided with a lower protrusion protruding from the fixed end side toward the free end and positioned below the protrusion.

  The present invention is also characterized in that the total length in the horizontal direction of both protrusions is made to substantially coincide with the distance between the fixed end side and the free end side of the hook body.

  The present invention is also characterized in that the protrusion length of the protrusion is set to be longer than the protrusion length of the lower protrusion.

  The present invention is also characterized in that each protrusion has a downward slope toward the protruding tip.

  The present invention is also characterized in that the downward slope angle of each protrusion is set to 70 to 75 degrees with respect to the vertical line.

  In the present invention, the distance between the protruding tip of the protrusion and the fixed end side of the hook body and the vertical distance between both protrusions are 1.0 to 1.5 with respect to the thickness of the string to be locked. It is characterized in that it is set to a double spacing dimension.

  The present invention relates to a hook body in which a fixed end side and a free end side are connected in a U-shape; a fixing plate provided on the outer surface of the hook body on the fixed end side, for fixing the hook body to a wall surface of a ship And a string-returning projection that protrudes from the free end side of the hook body toward the fixed end side. As with the hook, the string body can be easily engaged and disengaged. Moreover, since the protrusions are provided on the hook body, the detachment of the string body from the hook body is prevented by this protrusion, so that the detachment of the string body from the hook body is about the same as a completely closed hook. Can be prevented.

  In the present invention, the hook body is provided with a lower protrusion that protrudes from the fixed end side toward the free end and is positioned below the protrusion, so that the tip of the protrusion and the fixed end side of the hook body The detachment of the string from between the two can be prevented by the lower protrusion. For this reason, the detachment | leave from the hook main body of a string can be prevented more reliably.

  The present invention also makes the total length of both projections in the horizontal direction substantially coincide with the distance between the fixed end side and the free end side of the hook body. The length can be shortened. For this reason, the space in the hook main body under the lower protrusion is increased, and the arrangement space for the string body can be ensured without increasing the size of the hook main body more than necessary. In addition, since the protrusion length of the lower protrusion is shortened, the probability that the string body to be detached from the hook body will get on the lower protrusion is low, and even if it rides, the time it has been riding As a result, the detachment of the string body from the hook body can be more reliably prevented.

  In the present invention, since the protrusion length of the protrusion is set to be longer than the protrusion length of the lower protrusion, the engagement / disengagement position of the string body is close to the fixing side of the hook body. . For this reason, the detachment of the string body from the hook body can be prevented more effectively.

  That is, when observing the detachment behavior of the string body from the hook body, the number of attempts to detach along the free end side of the hook body is greater than the number of attempts to detach along the fixed end side of the hook body. However, it has been confirmed that it is overwhelmingly large. For this reason, making the engagement / disengagement position of the string body closer to the fixed end side of the hook body can consequently reduce the possibility of the string body being detached from the hook body.

  In the present invention, each protrusion has a downward slope toward the protruding tip, so that the string body that collides with the protrusion or the lower protrusion in an attempt to detach from the hook body can be removed as quickly as possible. Can be dropped to the bottom.

  In the present invention, the downward slope angle of each protrusion is set to 70 to 75 degrees with respect to the vertical line, so that the string body that collides with the protrusion or the lower protrusion is about to be detached from the hook body. In addition, it is possible to prevent a problem that the protrusion or the lower protrusion bites into the base portion of the hook body and cannot be separated.

  In the present invention, the distance between the protruding tip of the protrusion and the fixed end side of the hook body and the vertical distance between both protrusions are 1.0 to 1.5 with respect to the thickness of the string to be locked. Since the double spacing is set, it is easy to lock the string body to the hook body, and the detachment of the string body from the hook body can be effectively prevented.

The present invention will be described below with reference to the drawings.
FIG. 1 shows a U-shaped hook with a return according to an embodiment of the present invention. This U-shaped hook 1 includes a hook body 2 in which a fixed end side and a free end side are connected in a U-shaped hook shape. The hook body 2 is provided with a fixing plate 3 for fixing the hook body 2 to a wall surface of a shipboard or the like by welding or other fixing methods, and protrudes from the free end side of the hook body 2 toward the fixed end side. A string returning protrusion 4 and a lower protrusion 5 protruding from the fixed end side of the hook body 2 toward the free end side are provided. And after fixing this hook main body 2 to wall surfaces, such as a ship's boat, via the fixing board 3, the suspension rope 7 of the sheet | seat 6 stretched along the wall surface is latched to the said hook main body 2. The slack of the hanging rope 7 can be prevented.

  That is, as shown in FIG. 2, the hook body 2 includes a straight round bar-like fixed end 2a arranged in the vertical direction and a straight round bar-like free end arranged almost parallel to the fixed end 2a. 2b, and a round bar-like connecting bottom 2c that connects the lower end of the fixed end 2a and the lower end of the free end 2b in an arc shape, and is formed in a U-shape as a whole, and the outer surface of the fixed end 2a For example, a flat fixed plate 3 is integrally connected by welding or the like.

  Further, as shown in FIGS. 1 and 2, a protrusion 4 that protrudes downwardly toward the fixed end 2a is fixed at a position near the upper end of the free end 2b. The distance W1 between the distal end portion and the fixed end portion 2a is set to 1.0D to 1.5D, more preferably 1.25D, with respect to the diameter D of the hanging rope 7. As a result, the suspension rope 7 can be easily locked to the hook body 2 and the suspension rope 7 once locked can be almost completely prevented from being detached from the hook body 2. Yes. That is, the suspending rope 7 once locked is prevented from being detached from the hook body 2 mainly by the protrusions 4.

  Further, as shown in FIG. 2, the downward inclination angle θ1 of the protrusion 4 is set to 70 to 75 degrees, more preferably 74 degrees with respect to the vertical line, thereby making the hook body 2 more than necessary. The arrangement space G of the hanging rope 7 can be set to a necessary and sufficient size without increasing the size.

  That is, the arrangement space G of the hanging rope 7 formed at the position below the protrusion 4 of the hook body 2 is somewhat larger than the diameter D of the hanging rope 7, and the arrangement space G has a certain amount of play. It has been confirmed by experiments by the present inventors that the inner suspension rope 7 is less likely to be detached from the hook body 2. Therefore, considering only this point, it is better to project the protrusion 4 with an upward gradient than to project it with a downward gradient.

  On the other hand, when the detachment behavior of the hanging rope 7 from the hook body 2 is observed, the hanging rope 7 rises along the free end 2b of the hook body 2 when the seat 6 is blown by the wind. In most cases, the protrusion 4 moves along the lower surface of the protrusion 4 and is detached from the hook body 2 from the tip of the protrusion 4. The protrusion rises along the fixed end 2 a of the hook body 2 and is detached from the hook body 2. It has been confirmed by experiments by the present inventors that there are almost no cases. Therefore, from this point, it is better that the protrusion 4 protrudes with a downward slope and the angle θ1 is as small as possible.

  However, if the downward inclination angle θ1 of the protrusion 4 is too small, when the hanging rope 7 collides with the protrusion 4 in an attempt to separate from the hook body 2, the protrusion 4 bites into the base portion of the protrusion 4 to the hook body 2, There is a problem of not being able to leave.

  Considering both of the above points, as a result of repeated trial and error by the inventors, it has been confirmed that the downward gradient angle θ1 of the protrusion 4 is preferably 70 to 75 degrees, more preferably about 74 degrees.

  On the other hand, as shown in FIGS. 1 and 2, the lower protrusion 5 extends from the fixed end 2 a to the free end so that the gap between the tip of the protrusion 4 and the fixed end 2 a of the hook body 2 can be closed. The vertical distance W2 between the lower projection 5 and the projection 4 is 1.0D to 1 with respect to the diameter D of the suspension rope 7. .5D, more preferably 1.25D, and the horizontal protrusion length of the lower protrusion 5 substantially coincides with the interval W1. That is, the total length in the horizontal direction of the protrusions 4 and 5 is substantially equal to the distance between the fixed end 2a and the free end 2b of the hook body 2. As a result, even if the suspension rope 7 rises along the fixed end portion 2a of the hook body 2 and tries to detach from the hook body 2, it is pushed back by the lower protrusion 5 and the suspension rope 7 Can be more completely prevented from being detached from the hook body 2.

  Further, as shown in FIG. 2, the downward inclination angle θ2 of the lower projection 5 is set to 70 to 75 degrees, more preferably 71 degrees with respect to the vertical line. The reason for determining the value of the downward gradient angle θ2 is that, as with the downward gradient angle θ1 of the protrusion 4, the value was confirmed to be appropriate as a result of trial and error by the inventors.

  The reason why the protrusion length of the lower protrusion 5 is made longer than necessary and does not overlap the protrusion 4 is as follows.

  That is, when the protruding length of the lower protrusion 5 is increased, the arrangement space G at the bottom of the hook body 2 is reduced accordingly, and in order to make the arrangement space G larger than a certain size, the size of the hook body 2 itself is increased. This is because it must be increased.

  Moreover, if both the protrusions 4 and 5 are overlapped, there is a high probability that the suspension rope 7 that collides with the lower surface of the protrusion 4 and is pushed back downward will remain on the upper surface of the lower protrusion 5. This is because there is a high possibility that the hanging rope 7 is detached from the hook body 2.

Next, the operation of the present embodiment will be described.
In use, first, the U-shaped hook 1 is fixed to a wall surface of a shipboard or the like via a fixing plate 3. Usually, it is fixed by welding. After that, the seat 6 is stretched along the wall surface of the ship.

  By the way, when the length of the sheet 6 in the lateral direction is increased, there is a problem that even if the suspension rope 7 is pulled with a strong force, the intermediate portion thereof is slacked downward. Therefore, as shown in FIG. 1, the intermediate portion of the hanging rope 7 is locked to the hook body 2. Thereby, slack of the rope 7 for suspension and the sheet | seat 6 can be prevented.

  In this state, when the seat 6 is blown with wind, the suspension rope 7 is subjected to a force to lift it upward, and the suspension rope 7 rises in the hook body 2. . As described above, most of the behavior is an upward movement along the free end 2b.

  However, as shown in FIG. 1, a protrusion 4 having a downward slope toward the projecting tip is provided near the upper end of the free end 2b. Then, when it collides with the lower surface of the protrusion 4 and the squeezing force by the wind is weakened, the hook body 2 is returned to the bottom.

  Since the U-shaped hook 1 is a normally open type hook, it is very easy to lock the hanging rope 7 to the hook body 2 and the projection 4 and the lower projection 5 are used for hanging. Since the detachment of the rope 7 from the hook body 2 is prevented, the detachment of the hanging rope 7 from the hook body 2 can be prevented to the same extent as a carabiner or the like. Moreover, it is easier to remove the hanging rope 7 than a hook having a movable piece such as a carabiner.

  In the embodiment, the case where the lower protrusion 5 is provided together with the protrusion 4 has been described. However, as described above, the lower protrusion 5 is necessary because the number of times the lower protrusion 5 is required is extremely small. It may be omitted depending on.

  As described above, the U-shaped hook with a hook according to the present invention is useful as a hook used when, for example, a seat is stretched along the wall surface of a ship's wall, and in particular, the detachment of the string body from the hook body is possible. Suitable as a normally open hook that can be almost completely prevented.

It is explanatory drawing of the U-shaped hook with a return which concerns on one Embodiment of this invention. It is detail drawing of the U-shaped hook with a turn of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 U-shaped hook 2 Hook main body 2a Fixed end part 2b Free end part 2c Connection bottom part 3 Fixing plate 4 Protrusion 5 Lower side protrusion 6 Seat 7 Hanging rope D Diameter G Arrangement space W1 Space W2 Vertical space θ1, θ2 Downhill angle

Claims (7)

  A hook body in which a fixed end side and a free end side are connected in a U-shape; a fixing plate provided on the outer surface of the hook body on the fixed end side for fixing the hook body to a wall surface of a ship; A U-shaped hook with a barb, characterized by comprising: a string body return protrusion protruding from the free end side toward the fixed end side.   The hooked U-shaped hook according to claim 1, wherein the hook body has a lower protrusion protruding from the fixed end side toward the free end and positioned below the protrusion.   3. A U-shaped hook with a barb according to claim 2, wherein the total length of both projections in the horizontal direction substantially coincides with the distance between the fixed end side and the free end side of the hook body.   4. A U-shaped hook with a barb according to claim 2, wherein the protruding length of the protrusion is set to be longer than the protruding length of the lower protrusion.   The hooked U-shaped hook according to claim 1, 2, 3, or 4, wherein each projection has a downward slope toward the projecting tip.   6. The U-shaped hook with barb according to claim 1, 2, 3, 4 or 5, wherein an angle of a downward slope of each protrusion is set to 70 to 75 degrees with respect to a vertical line.   The distance between the protruding tip of the protrusion and the fixed end of the hook body and the vertical distance between both protrusions are 1.0 to 1.5 times the dimension of the string to be locked. The U-shaped hook with barb according to claim 2, wherein the hook is set.

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