JPH0155135B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rope hook device for hooking a load fixing rope on the loading platform of a transport vehicle such as a truck.

[Conventional technology]

Examples of conventional rope hook devices of this type include the following.

(A) A rope hook that protrudes outward in a downward hook shape and is simply fixed to the side of the floorboard of the loading platform or the top of the gate plate. (For example, in 1973
-Refer to Publication No. 84820).

(B) A rope hook is provided inside the tilt plate (see, for example, Japanese Utility Model Application Publication No. 51-47111).

(C) For example, as disclosed in Japanese Utility Model Application Publication No. 58-2136, a rope hook is made to be able to protrude and retract from the surface of the cargo platform such as the gate plate.

[Problem to be solved by the invention]

With configuration (A) above, clothes may be caught on the rope hook by a loading worker or a passerby, or the rope hook may touch and injure a passerby while the vehicle is running, or may come into contact with another object and cause injury. There is a risk of damage to the vehicle, and there are problems such as spoiling the aesthetic appearance of the entire vehicle.

With configuration (B) above, the problems like (A) above do not occur, but the rope hook may interfere with loading the cargo onto the loading platform, reducing the loading capacity, or the rope hook may touch the cargo and cause it to fall. If the rope is damaged or loaded in large quantities, there are problems such as difficulty in hooking the rope to the rope hook.

In addition, in the configuration of (C) above, (A) and (B) above
Although the problem mentioned above can be solved, in order to pull out the rope hook, a space must be provided between the rope hook and a recess provided on the flap plate or other surface of the loading platform, which makes the appearance unsightly. At the same time, dust accumulates in that space, making it impossible for the rope hook to move in and out, and rainwater, etc. can enter the rope hook's ingress and ejection mechanism through that space, promoting rust and deteriorating durability. There is a problem with this.

Furthermore, in the structure (C) above, the rope hook can be freely rotated in the protruding state, so when hanging the rope,
The rope hook rotates randomly, which is inconvenient.
While the transport vehicle is running, the rope hook may rotate unexpectedly due to vibrations of the loading platform, and the rope hooked to it may come off unexpectedly, or the rope hook may become unintentionally retractable due to loosening of the tension of the rope, etc. There are problems such as being rotated and the rope hook accidentally sinking in.

The present invention has been made in view of the above problems of the conventional technology, and in particular, by further improving the configuration (C) above, the end surface of the rope hook is placed on the surface of the loading platform when not in use. It is an object of the present invention to provide a rope hook device for a transport vehicle that can close a provided window hole and prevent the rope hook from rotating accidentally.

[Means to solve the problem]

In order to achieve the above object, the rope hook device for a transportation vehicle of the present invention has a rope hook at its tip that almost complements the window hole provided on the surface of the loading platform, and on which a rope can be hung at the lower part, By having a protruding position in which the tip protrudes from the surface of the loading platform, and by having the tip approximately align with the surface of the loading platform or slightly recessed,
a movable member provided on the loading platform so as to be movable between a retracted position in which the window hole is closed and an operating position in which the distal end is retracted slightly from the retracted position, and not rotatable around a central axis; and the movable member is protruded. a biasing means that constantly biases the movable member toward the position, and is provided between the movable member and a case movably supporting the movable member, and the movable member is moved from the protruding position to the retracted position. , the movable member and the case are linked together to prevent the movable member from moving in the direction of the protruding position, and the movable member is moved from the retracted position to the actuated position, whereby the movable member and the case are linked together. Push lock/push release, wherein the movable member is released and the movable member is moved beyond the retracted position to the protruding position side, thereby restoring the disengaged state between the movable member and the case to a state in which the movable member and the case can be linked. It is equipped with a mechanism.

The push-lock/push-release mechanism is provided within the movable member so as to be slidable in a direction intersecting the moving direction of the movable member, and when the movable member reaches the retracted position, the push-release mechanism A lock lever that can be thrust into the hole and is always biased in the direction of thrusting into the engagement hole; A guide pin that is provided on one side of the lock lever so as to be freely protrusive and retractable and that is constantly biased in the direction that projects from the side surface of the lock lever. , the lock lever is provided on the case side so that the guide pin can be inserted into the guide pin, and the guide pin is removed from the engagement hole until the movable member moves from the operating position beyond the retracted position to the protruding position. a groove for guiding the movable member to be maintained in the retracted position, and a groove for guiding the movable member to be maintained in the retracted position until the movable member moves from the retracted position to the actuated position;
It is preferable that the guide means includes a cam surface that guides the guide pin so as to enter the groove.

[Effect]

According to the present invention, when the rope hook is not in use, if the rope hook is stopped at the retracted position, the window hole is closed by the end surface of the rope hook, and a flat appearance without unevenness can be provided. There is no risk of dust, rainwater, etc. entering through the gap with the rope hook.

From this state, when the rope hook is pushed to the operating position, the link between the moving member and the case is released, and then the rope hook is pushed to the protruding position by the urging force of the urging means.

In this state, the rope can be hooked onto the rope hook.

At this time, the rope hook does not rotate accidentally.

Next, when the rope hook is pushed from the protruding position to the retracted position, the movable member and the case are linked, and the rope hook is stopped at the retracted position.

〔Example〕

Embodiments of the present invention shown in the accompanying drawings will be described below.

In Fig. 1, reference numeral 1 denotes a loading platform for a small truck, which includes a floor plate 2, fixed side flaps 3 erected on both sides of the floor plate 2, and a rear end of the floor plate 2 that can be opened and closed in the vertical direction. It consists of a rear flap plate 4 which is freely hinged.

The side flap plate 3 includes a side plate 3a and a side plate 3a.
It consists of a horizontal upper piece 3b that is connected to the upper end and faces inward of the loading platform 1, and a hanging piece 3c that hangs down from the inner end of this upper piece 3b.

A plurality of rope hook devices 5 are provided along the longitudinal direction of the upper piece 3b of the side flap plate 3 at appropriate intervals.

As shown in FIG. 2 and subsequent figures, in each rope hook device 5, the upper end of the arm portion 6b extending upward from the front and rear edges of the substantially vertical base piece 6a is connected to the lower surface of the upper piece 3b of the side flap plate 3. A base 6 is fixed to the base 6, and a base piece 6a of the base 6 is fixed to one side of the base piece 6a with an appropriate set screw (not shown).
It is provided with a case 8 consisting of a cover 7 which bulges out in a U-shape in plan view toward the inside of the loading platform 1.

Front wall 7 at the U-shaped bulge in the center of the cover 7
a. In the rectangular space formed by the side wall 7b, the rear wall 7c, and the center part of the base piece 6a of the base 6, there is a rope for hooking the rope to the upper end of the cylindrical part 9 having a rectangular cross section. Horizontal plate-like rope hook 10
The cylindrical portion 9 of the movable member 11, which is formed by fixing the central portion of the lower surface of the movable member 11, is fitted so as to be slidable in the vertical direction.

As shown in FIGS. 2 to 6, the movable member 11 has a window hole 12 formed in the upper piece 3b of the side flap plate 3, which is substantially complementary to the planar shape of the rope hook 10. a retracted position in which the upper surface of the rope hook 10 is substantially flush with the surface of the upper piece 3b, or retracts slightly downward to close the window hole 12, as shown in FIG. , an operating position in which the rope hook 10 is retracted slightly further downward than the retracted position and the lower surface of the rope hook 10 abuts the upper end of the cover 7; and as shown in FIG.
A flange-shaped stopper 13 that protrudes further upward and is fixed to the lower end of the cylindrical portion 9 is movable to a protruding position where it abuts the lower end of the cover 7.

Furthermore, since the movable member 11 is surrounded by a case 8 having a substantially rectangular cylindrical shape,
Rotation about the central axis pointing in the vertical direction is prevented.

A spring receiving piece 14 is connected at right angles from the center of the lower end of the base piece 6a in the base 6 toward the inside of the loading platform 1.
and a spring receiving piece 15 formed by cutting and raising the middle part of the side wall 9a on the inner side of the loading platform 1 in the cylindrical portion 9 of the moving member 11 toward the base 6 side. Compression coil spring 16 serving as a force means
is compressed, and this spring 16 causes the moving member 11
is constantly urged upward toward the protruding position.

Reference numeral 17 denotes a push-lock/push-release mechanism, which generally consists of a lock lever 18, a guide pin 19, a guide means 20 for guiding the guide pin 19, and the like.

The lock lever 18 is held in the cylindrical portion 9 of the movable member 11 by a pair of upper and lower guide pieces 21 cut and raised in the middle part of the side wall 9b of the cylindrical portion 9 on the base 6 side. It is supported so as to be slidable in orthogonal front and rear directions. The front end surface of the lock lever 18 has a pointed shape that slopes forward and upward, and the front end has a window hole 22 bored in the front wall 9c of the cylindrical portion 9 and the movable member 11 is in the retracted position. At this time, it can be inserted into the engagement hole 23 formed in the front wall 7a of the cover 7.

A compression coil spring 24 is compressed between the rear end of the lock lever 18 and the rear wall 9d of the cylindrical portion 9, and this spring 24 allows the lock lever 18 to
It is always urged forward so that its tip enters the window hole 22 and the like.

A bottomed hole 25 is bored in the left and right direction, which is perpendicular to both the moving direction of the moving member 11 and the slidable direction of the lock lever 18, in the approximate center of the side surface of the lock lever 18 facing inward of the loading platform 1. A guide pin 19 is fitted into the bottomed hole 25 so as to be freely protrusive and retractable, with a compression coil spring 26 compressed in the inner part.

This guide pin 19 is always urged by a spring 26 so as to protrude from the side surface of the lock lever 18, and the tip of the guide pin 19 is connected to the side wall of the cylindrical portion 9.
Penetrating through the long hole 27 in the front and back direction drilled in a,
It is in pressure contact with the side wall 7b of the cover 7.

As shown in FIG. 3, a shallow concave portion 28 is formed in the side wall 7b of the cover 7, with which the tip of the guide pin 19 comes into pressure contact.

The moving member 11 is located at the middle part of the front edge of the recess 28.
When the guide pin 19 reaches the retracted position, a front protrusion 28a into which the guide pin 19 can enter is formed, and the front edge of the recess 28 downward from the tip of the front protrusion 28a forms a cam surface 28b that slopes downwardly at the rear.
When the movable member 11 is pushed from the retracted position to the operating position, this cam surface guides the guide pin 19 to move backward, so that the lock lever 18 can be retracted inside the window hole 22. It's summery.

The shape of the other peripheral portions of the recessed portion 28 can be freely determined within a range that does not prevent the guide pin 19 from operating as described below.

29 is a recess 28 in the side wall 7b of the cover 7.
Inside, there is a vertical groove recessed deeper toward the inside of the loading platform 1, and the lower end is a cam surface 28b.
At a position where it intersects with the lower end of the recess 28 and whose upper end is above the forward protrusion 28a of the recess 28, it gently continues to the intermediate part of the recess 28 and is entirely parallel to the moving direction of the moving member 11.

The recess 28 and the groove 29 form a guide means 20 for guiding the guide pin 19.

Next, the operation and effect of the above embodiment will be explained.

As shown in FIGS. 2 to 6, the moving member 11
When the guide pin 19 is in the retracted position, the guide pin 19 is in the recessed part 2.
The lock lever 1 is engaged with the front projection 28a of the lock lever 1.
8 is urged forward by a spring 24,
Its front end enters the engagement hole 23 through the window hole 22.
Due to the engagement between the lock lever 18 and the engagement hole 23, the movable member 11 is prevented from moving upward from the retracted position, and since it is urged upward by the spring 16, it is stably held in the retracted position. maintained.

At this time, the rope hook 10 is at almost the same height as the upper piece 3b of the side flap plate 3 or recessed below it, so the rope hook 10 does not get caught on other objects and has a beautiful appearance. present.

From this state, attach the rope 30 to the rope hook 10.
(See Fig. 9), push the top surface of the rope hook 10 downward and move the moving member 11.
from the retracted position to the activated position, and then
Just let go.

This initial push-in motion of the rope hook 10 causes the guide pin 19 to move toward the cam surface 28 of the recess 28.
While sliding in contact with b, resisting the biasing force of the spring 24,
It is moved backward together with the lock lever 18,
After the front end of the lock lever 18 is disengaged from the engagement hole 23, the tip of the guide pin 19 projects into the groove 29 just before the moving member 11 reaches the operating position.

Thereafter, when the lower surface of the rope hook 10 comes into contact with the cover 7, the moving member 11 assumes the operating position shown in FIGS. 7 and 8. When the user releases the rope hook 10 from this state, the moving member 11 is pushed up by the upward biasing force of the spring 16.

During this time, the tip of the guide pin 19 plunges into the groove 29 and rises directly above along the groove 29, so that
The lock lever 18 is restrained from moving forward by the engagement between the tip of the guide pin 19 and the groove 29, and is maintained at a retreated position rearward from the window hole 22, as shown in FIG. .

Therefore, while the guide pin 19 is inserted into the groove 29, the front end of the lock lever 18 does not protrude forward beyond the window hole 22, and the movable member 11 can freely rise. .

When the movable member 11 rises slightly beyond the retracted position, the guide pin 19 is pushed back slightly into the bottomed hole 25 and comes off the upper end of the groove 29, and at the same time, due to the biasing force of the spring 24, The lock lever 18 is pushed forward.

However, at this time, since the movable member 11 has moved slightly upward beyond the retracted position, the front end of the lock lever 18 cannot engage with the engagement hole 23, and the front end of the lock lever 18 cannot engage with the engagement hole 23. Touching the rear surface,
Progress is blocked midway.

In this state, the movable member 11 further rises while the front end of the lock lever 18 is in sliding contact with the rear surface of the front wall 7a of the cover 7, and when it reaches the protruding position shown in FIG. It stops when it comes into contact with it.

In this state, the rope 30 can be hooked onto the lower surface of the rope hook 10 to tie up the cargo.

When the rope hook 10 is not in use, it is sufficient to push the rope hook 10 from the state shown in FIG. 9 to the retracted position.

Then, the lock lever 18 descends together with the movable member 11 while remaining in the state shown in FIG. Return to the state shown in Figure 6.

Note that when the lock lever 18 descends together with the movable member 11 from the state shown in FIG. do not have.

After that, even if you let go of the rope hook 10,
As described above, the engagement between the lock lever 18 and the engagement hole 23 prevents the movable member 11 from moving upward, so the movable member 11 is maintained at the retracted position without returning to the protruding position. Ru.

In this way, by repeating the pushing operation of the rope hook 10, the operation of protruding the rope hook 10 to the protruding position and stopping it in the retracted position can be repeated.

〔Effect of the invention〕

As is clear from the above, according to the present invention, when the rope hook is not in use, by stopping the rope hook in the retracted position, the window hole formed on the surface of the loading platform is closed by the rope hook.
To eliminate the risk of injury or damage to human bodies, their clothes, cargo, or other objects when a rope hook gets caught on them, and to provide a loading platform with a smooth appearance with few irregularities. This is significant in terms of safety measures and improving the appearance, and can also prevent dust, rainwater, etc. from entering the rope hook device through the window hole.

In addition, when hanging a rope on a rope hook, simply push the rope hook, and on the return trip, the rope hook will protrude to the optimal position for hanging the rope, and when the rope hook is not in use,
Just by pushing the rope hook again, it returns to the original retracted position, so the rope hook can be moved in and out with a single touch, making handling convenient.

Furthermore, since rope hooks do not rotate around their central axis, they are convenient for hanging ropes, and unlike conventional retractable rope hooks, rope hooks do not rotate around their central axis, and unlike conventional retractable rope hooks, they do not rotate when the transport vehicle is running due to vibrations in the loading platform. There is a risk that the rope hook may rotate unexpectedly and the rope hooked to it may come off, or that the rope hook may be rotated to a position where it can be retracted due to tension or loosening of the rope, causing the rope hook to be retracted unexpectedly. Not at all.

[Modified example]

In the above-mentioned embodiment, the rope hook 10 can be moved upwardly from the upper piece 3b of the side flap plate 3, but for example, the entire rope hook device 5 of the above-mentioned embodiment can be゜The rope hook 10 can be laid down on its side and attached to the side flap plate 3 so that the rope hook 10 can be retracted outward from the side plate 3a of the side flap plate 3, or the rope hook device can be buried in the floorboard of the loading platform and the rope hook can be attached to the side flap plate 3. A number of modifications are possible, such as making it possible to extend and retract from the side edge or lower side of the floorboard, or providing a rope hook device on the rear flap plate in the same way as the side flap plate.

Further, as the push-lock/push-release mechanism, for example, one having a structure similar to a known mechanism used in push-button switches and the like may be used.

However, if the structure is as in the embodiment, not only will the mechanism be small and operate smoothly, but the amount of mechanism protruding from the case 8 will be small, and it can be easily installed at any position on the loading platform.

Furthermore, the rope hook is not limited to a flat plate as in the embodiment, but may also be a rod bent into an L-shape or other shapes.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing a loading platform of a truck equipped with a rope hook device of the present invention, and FIG. 2 is an enlarged longitudinal sectional front view taken along line A-A in FIG. 1, with the movable member in the retracted position. FIG. 3 is a vertical cross-sectional side view taken along line B-B in FIG. 2, FIG. 4 is a cross-sectional plan view taken along line C-C in FIG. 3, and FIG. 5 is a cross-sectional side view taken along line C-C in FIG. 6 is a longitudinal sectional front view taken along the line D-D of FIG. 5, and FIG. 7 is a longitudinal sectional side view taken along the line EE of FIG. A vertical sectional side view of a similar part, FIG.
FIG. 9, a longitudinal sectional front view taken along line F, is a longitudinal sectional side view of the same portion as FIG. 6, showing a state in which the moving member is in the protruding position. 1... Loading platform, 3... Side agitation plate, 5... Rope hook device, 6... Base, 7... Cover, 8
... Case, 9 ... Cylinder part, 10 ... Rope hook, 11 ... Moving member, 12 ... Window hole, 16 ...
Spring, 17... Push lock/push release mechanism, 18... Lock lever, 19... Guide pin, 20... Guide means, 23... Engaging hole, 2
4, 26... Spring, 28... Concave portion, 28b... Cam surface, 29... Concave strip.

Claims (1)

[Scope of Claims] 1. A rope hook that is substantially complementary to the window hole provided on the surface of the loading platform, and a rope hook can be hung at the lower part of the rope hook, and the tip of the rope hook is provided at a protruding position where the tip protrudes from the surface of the loading platform. and is movable between a retracted position in which the tip is substantially aligned with the surface of the loading platform or retracted slightly more than that, thereby closing the window hole, and an operating position in which the distal end is retracted slightly further than the retracted position, and a movable member provided on the loading platform so as to be unrotatable around a central axis; urging means that constantly biases the movable member toward a protruding position; and a case movably supporting the movable member and the movable member. When the movable member is moved from the protruding position to the retracted position, the movable member and the case are linked to prevent the movable member from moving in the protruding position direction, and the movable member is moved from the retracted position to the activated position, thereby releasing the link between the movable member and the case, and by moving the movable member beyond the retracted position to the protruding position, the movable member and the case are released. 1. A rope hook device for a transport vehicle, comprising a push lock/push release mechanism configured to restore a state in which the link is released from a state in which the link is released to a state in which the link can be made. 2. A push-lock/push-release mechanism is provided within the movable member so as to be slidable in a direction intersecting the direction of movement of the movable member, and when the movable member reaches the retracted position, a locking mechanism provided in the case A lock lever that can be thrust into a mating hole and is always biased in the direction of thrusting into the engagement hole, and a guide that is provided on one side of the lock lever so as to be freely protrusive and retractable and that is constantly biased in a direction that projects from the side surface of the lock lever. A pin is provided on the case side so that the guide pin can be inserted, and the lock lever holds the guide pin from the engagement hole until the movable member moves from the operating position beyond the retracted position to the protruding position side. a groove guiding the movable member to remain in the disengaged position, and a movable member moving from the retracted position to the actuated position;
Claim 1, further comprising a guide means having a cam surface that guides the guide pin so as to enter the groove.
A rope hook device for a transport vehicle as described in 2.