JP2003182683A - Cone lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cone lock which is constituted so that early drop at a relatively small rotation angle caused by the cone lock attached in a vertically reverse orientation can be prevented. <P>SOLUTION: In the cone lock 1 having an upper cone 4 engaged with an upper cone socket 33 and a lower cone 5 engaged with a lower cone socket 34, a vertically reverse-oriented attachment preventing mechanism 21 is provided for preventing attachment by stopping rotation of the cone 4 when the cone lock 1 is to be attached in the vertically reverse orientation. As the vertically reverse-oriented attachment preventing mechanism 21, the one having a stopper member 22 for stopping rotation of the cone 4 by movement with its own weight is suitable, and the pin-shaped stopper member composed so as to stop rotation of the upper cone 4 by freely projecting from an upper face 2e of an upper fitting part 2b of a case 2 with its own weight is suitable as the stopper member 22. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cone lock related to container loading and lashing technology. The cone lock of the present invention is used as a container connecting fitting when a plurality of containers are stacked vertically or when the containers are fixed on the floor.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 5-23514, an upper cone for engaging an upper cone socket and a lower cone for engaging a lower cone socket are provided. Cone locks are known, and a pair of upper and lower cones are arranged so as to be rotationally displaced from each other for operational or safety reasons, that is, they are engaged from the engagement position (lock position) with respect to the upper and lower cone sockets. The rotation angles (hereinafter, also referred to as operating rotation angles) up to the release position (open position) are set to be different from each other.

Therefore, for example, when the operating rotation angle of the lower cone is set to be smaller than the operating rotation angle of the upper cone, if the cone lock is mistakenly mounted upside down, the cone lock will not work for the operator. It may fall at an unexpected rotation angle, which is extremely dangerous.
For example, when the operating rotation angle of the upper cone in a certain cone lock is set to 90 degrees and the operating rotation angle of the lower cone is set to 45 degrees, if the cone lock is mounted in the normal up and down direction, Unless the upper and lower cones are rotated 90 degrees, the cone lock will not drop from the bottom cone socket of the container suspended by the crane, but if the cone locks are installed upside down, the upper and lower cones will rotate 45 degrees. The corn rock will fall. On the other hand, the worker puts the upper and lower cones at 9
I think that the cone lock will not fall unless it is rotated by 0 degrees, so that the cone lock will fall at an unexpected timing for the operator, which causes a very dangerous situation in work.

Also, when a cone lock is attached to the lower cone socket of a container also suspended by a crane, the lower cone exposed under the lower cone socket collides with another container during transportation. Then, the lower cone may rotate together with the upper cone in the disengagement direction (open direction). In this case as well, if the cone lock is installed in the normal direction up and down, the cone lock will not drop unless the upper and lower cones rotate 90 degrees, but the cone lock will be installed upside down. Then, when the upper and lower cones rotate 45 degrees, the cone lock will fall. Therefore, the cone lock falls at a relatively small rotation angle, which causes an extremely dangerous situation in work.

[0005]

In view of the above points, the present invention prevents the cone lock from being dropped early at a relatively small rotation angle due to the cone lock being mounted upside down. The purpose is to provide a cone lock that has been devised so that

[0006]

To achieve the above object, a cone lock according to claim 1 of the present invention comprises an upper cone for engaging an upper cone socket and a lower cone for engaging a lower cone socket. In the cone lock having the above, it is characterized in that it has an upside down attachment preventing mechanism that prevents rotation of the cone and prevents the attachment when the cone lock is attached upside down.

Further, in the cone lock according to claim 2 of the present invention, in the cone lock according to claim 1 described above, the upside-down opposite mounting prevention mechanism has a stopper member that moves by its own weight to prevent rotation of the cone. It is characterized by.

The cone lock according to a third aspect of the present invention is the cone lock according to the second aspect, wherein the stopper member projects from the upper surface of the upper fitting portion of the case so as to be retractable by its own weight and the upper cone rotates. It is a pin-shaped stopper member for blocking

In the above-mentioned prior art, there is a danger that the cone lock may fall at a relatively small rotation angle, although the function of the cone lock is set even though the operating rotation angles of the upper and lower cones are set to be different from each other. This is because it was allowed to be mounted upside down and upside down. On the other hand, the present invention has a mechanism that physically obstructs the mounting of the cone lock when it is mounted upside down. It has the function of preventing early fall due to mounting.

That is, when the cone lock according to claim 1 of the present invention having the above-mentioned structure is mounted in the upside-down direction, the upside-down mounting mechanism prevents the cone from rotating in the open direction. Prevents mounting upside down. The cone is located in the locked position in the initial position, and is prevented from being mounted in this position because the cone is prevented from rotating in the open direction. As the upside-down opposite-direction mounting preventing mechanism, as described in claim 2, a mechanism having a stopper member that moves by its own weight to prevent rotation of the cone is preferable, and the stopper member described in claim 3 is preferable. As described above, it is preferable to use a pin-shaped stopper member that projects freely from the upper surface of the upper fitting portion of the case by its own weight to prevent the upper cone from rotating. In the case of the pin-shaped stopper member according to this aspect, when the cone lock is to be mounted upside down, the pin-shaped stopper member projects from the upper surface of the upper fitting portion of the case by its own weight, and the upper cone and the lower cone together. It will prevent it from rotating in the open direction.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a cone lock according to an embodiment of the present invention, FIG. 2 is a front view of the cone lock, and FIG. 3 is a sectional view taken along the line AA in FIG. 1 to 3 show a state in which the cone lock is in a vertically normal direction. On the other hand, FIGS. 4 and 5 show a state in which the cone lock is turned upside down.

The cone lock 1 according to this embodiment has, as a basic structure, firstly the upper and lower cone sockets 33, 34.
A plate-shaped support board 2 arranged so as to be sandwiched between
A case 2 integrally formed with upper and lower fitting portions 2b and 2c that are fitted in the engaging holes 33a and 34a of the cone sockets 33 and 34 in a state of being prevented from rotating, respectively, and a case 2 is rotated in the vertical direction. A shaft 3 freely inserted, and an upper cone socket 3 provided on the upper end of the shaft 3
3, the upper end cone 4 that engages (locks) the engaging end 4a with the edge of the engaging hole 33a from the inside when inserted and rotated, and the lower cone socket 34 provided at the lower end of the shaft 3 The lower cone 5 that engages the engaging end 5a with the edge of the engaging hole 34a from the inside when inserted and rotated, and the upper cone 4 provided on the upper cone 4 in the open direction ( A cam surface 4b that automatically rotates counterclockwise when viewed from above, a cam surface 5b that is provided below the lower cone 5 and that automatically rotates the lower cone 5 in the open direction, and a shaft 3 that rotates the upper and lower cones 4, 4. Spring means 6 including a coil spring (twist spring) or the like that elastically urges in the engaging direction of 5 (locking direction, clockwise when viewed from above).
And a manual operation part 7 provided with a wire 8 or the like for rotating the shaft 3 in the open direction against the elasticity of the spring means 6 by a pulling operation, and the manual operation part 7 at its manual disengagement position (manual open position). ) Has a manual operation portion stopping means 9 for stopping against the elasticity of the spring means 6.

The upper cone socket 33 is the upper container 31 of the upper and lower containers 31, 32 which are stacked on each other.
Is attached to the lower surface of the, and has an engaging hole 33a that opens to the lower surface and has a hollow interior. The engagement hole 33a has a rectangular opening shape (however, the short side of the rectangle is rounded) so that the cone lock 1 has a round shape.
The upper fitting portion 2b of the case 2 formed in the same plane rectangle (however, the short side of the rectangle has a round shape) has a directional property with respect to the mounting, and the rotation is stopped in the same direction. It is inserted in the state.

The lower cone socket 34 is the lower container 32 of the upper and lower containers 31, 32 which are stacked on each other.
Is attached to the upper surface of the, and has an engaging hole 34a that opens to the upper surface and is hollow inside. The engagement hole 34a has a rectangular opening shape (however, the short side of the rectangle is rounded), and the cone lock 1
Has a directional property with respect to the mounting, and the lower fitting portion 2c of the case 2 which is also formed in a flat rectangular shape (however, the short side of the rectangular shape is rounded) is prevented from rotating in the same direction. It is inserted in the closed state.

The support board portion 2a and the upper and lower fitting portions 2b, 2
The case 2 integrally provided with c is divided into two parts on the left and right when viewed from the direction B in the figure, and the left and right halves are bolted together.

The shaft 3 rotatably inserted in the case 2 is
Inside the case 2, the upper and lower cones 4 and 5 are elastically biased in the locking direction (clockwise direction) by the spring means 6 as described above, and the arm-shaped contact portion 3a contacts the inner surface 2d of the case 2. It has been stopped by that.
Hereinafter, this stop position will be referred to as the initial movement position of the shaft 3.

The upper and lower cones 4, 5 are displaced in the rotational direction from each other and are arranged in a plane x shape, and the operating rotation angle θ of the lower cone 5 is lower than the operating rotation angle θ ₁ of the upper cone 4. ₂ is set smaller.

The manual operation section 7 has one end of the wire 8 wound around the shaft 3 and fixed to the shaft 3 so as to rotate the shaft 3 and the upper and lower cones 4 and 5 manually.
The other end of the wire is pulled out to the outside of the case 2. When the grip 10 attached to the other end of the wire 8 is grasped and pulled, the shaft 3 and the upper and lower cones 4, 5 resist the elasticity of the spring means 6. And rotate in the open direction. When the pulling force is released, the shaft 3 and the upper and lower cones 4 and 5 are returned and rotated in the locking direction by the elasticity of the spring means 6.

The manual operation portion stopping means 9 is provided with a spring member 12 including a mouthpiece member 11 and a coil spring (compression spring) so as to stop the manual operation portion 7 at the manual engagement releasing position against the elasticity of the spring means 6. And a piece member (not shown) provided in the middle of the wire 8,
By engaging with the notches 11a and 11b provided in the opening of the mouthpiece member 11, the wire 8 is stopped in a state of being pulled out to some extent, and the upper and lower cones 4 and 5 are respectively stopped in the open position. It is provided in. The notches 11a and 11b are provided at two positions above and below the opening of the mouthpiece member 11, and the distances from the shaft 3 are set to be different from each other. Therefore, when one notch 11a is used, the upper cone 4 is at the open position. When the other notch 11b is used, the lower cone 5 stops at the open position.

With the above construction, the cone lock 1 operates as follows.

(A) Initial movement posture FIGS. 1 to 3 show a state in which the cone lock 1 is in the initial movement posture. That is, when the shaft 3 is at the initial movement position in FIG. 3, the upper cone 4 has its engaging end 4a protruding outward from the plane outer shape of the upper fitting portion 2b of the case 2 by a predetermined angle. 1 in the locked position. Also, the lower cone 5 has its engaging end 5a protruding outward from the plane outer shape of the lower fitting portion 2c of the case 2 by a predetermined angle, and is also in the lock position in FIG. However, since the operating rotation angle θ ₂ of the lower cone 5 is set smaller than the operating rotation angle θ ₁ of the upper cone 4 as described above, the upper cone 4 is larger than the lower cone 5. It sticks out at an angle. This initial posture is also the lock posture when the mounting of the cone lock 1 is completed.

(B) Installation work 1-1 From the initial posture of (a), the cone lock 1 is attached to the lower surface cone socket of the upper container 31 (upper cone socket).
When it is mounted on the upper side of the upper cone 4 without holding the cone lock 1 in the hand and operating the manual operation unit 7,
Is pressed against the upper cone socket 33 from below.
Then, the upper cone 4 is preliminarily twisted and inclined to form the cam surface 4b.
Since the cam surface 4b is pressed against the edge of the engagement hole 33a of the upper cone socket 33, the rotational moment generated by the cam surface 4b causes the upper cone 4 to resist the elasticity of the spring means 6 in the open direction. (Counterclockwise)
Automatically rotates to overlap with the flat outer shape of the upper fitting portion 2b, and at the same time, it can pass through the engagement hole 33a.
3a is inserted into the upper cone socket 33,
At the same time when it has finished passing through the engagement hole 33a, it is pulled back by the spring means 6 and returned to the locked position in FIG. The upper fitting portion 2b of the case 2 is fitted in the engagement hole 33a while being prevented from rotating.

(C) Installation work 1-2 Then, when the upper container 31 on which the cone lock 1 is suspended by the above work is stacked on the lower container 32 by a crane or the like, the manual operation unit 7 is used. The lower cone 5 is pressed against the upper cone socket (lower cone socket) 34 of the lower container 32 from above without operating. Then, since the lower cone 5 is preliminarily provided with the cam surface 5b having a twisted slope shape, the rotational moment generated by the cam surface 5b being pressed against the edge of the engagement hole 34a of the lower cone socket 34. As a result, the lower cone 5 automatically rotates in the open direction (counterclockwise) against the elasticity of the spring means 6, overlaps with the planar outer shape of the lower fitting portion 2c, and at the same time, can pass through the engagement hole 34a. 1 is inserted into the lower cone socket 34 after passing through the engaging hole 34a, and at the same time when it has finished passing through the engaging hole 34a, it is pulled back by the spring means 6 and returned to the locked position in FIG. The lower fitting portion 2c of the case 2 is fitted in the engagement hole 34a while being prevented from rotating. Therefore, the cone lock 1 is connected to the upper and lower cone sockets 33 and 34, respectively, by the above work of B and C.

(D) Removal work 1 1 When the upper container 31 of the vertically stacked containers 31 and 32 is lifted by a crane or the like and is unloaded from the lower container 32, the manual operation part 7 is preceded. Is operated to rotate the lower cone 5 from the lock position to the open position, and the position is fixed by the manual operation unit stopping means 9. Next, the upper container 31 is lifted by a crane or the like, and at this time, the lower cone 5 is pulled out from the lower cone socket 34.

(E) Removal work 1-2 Next, the cone lock 1 is attached to the upper cone socket 33.
To remove the upper cone 4 from the lock position to the open position by manually rotating the upper cone 4 from the lock position to the open position by holding the lower cone 5 in the hand and rotating it in the open direction (left direction). Pull out from. Therefore, the cone lock 1 is removed from the upper and lower cone sockets 33 and 34 by the above work of D and E.

Further, depending on the situation, as a work procedure,
First, the cone lock 1 may be mounted on the upper surface cone socket 34 of the lower container 32, and then the upper container 31 suspended by a crane or the like may be mounted thereon. In this case, the mounting work is performed as follows. Become.

(F) Installation work 2-1 From the initial posture of (1), the cone lock 1 is attached to the upper surface cone socket (lower cone socket) of the lower container 32.
When it is mounted on the lower cone 5, the cone lock 1 is held in the hand and the lower cone 5 is operated without operating the manual operation section 7.
Is pressed against the lower cone socket 34 from above.
Then, as described above, since the lower cone 5 is provided with the cam surface 5b having a twisted slope shape in advance, the cam surface 5b is not provided.
Is pressed against the edge of the engagement hole 34a of the lower cone socket 34, the lower cone 5 automatically rotates in the open direction (counterclockwise) against the elasticity of the spring means 6 by the rotational moment generated. It becomes possible to pass through the engaging hole 34a at the same time as it overlaps with the planar outer shape of the side fitting portion 2c,
The lower cone socket 34 actually passes through the engagement hole 34a.
At the same time when it is inserted into the inside and has finished passing through the engagement hole 34a, it is pulled back by the spring means 6 and returned to the locked position in FIG. The lower fitting portion 2c of the case 2 is fitted in the engagement hole 34a while being prevented from rotating.

(G) Installation work 2-2 Then, the upper container 31 suspended by a crane or the like is placed on the lower container 32 in which the cone lock 1 is installed in the upper surface cone socket 34 by the above work.
When placing the, without operating the manual operation unit 7,
The upper cone socket 33 is pressed against the upper cone 4 from above. Then, as described above, since the upper cone 4 is provided with the cam surface 4a having a twisted slope shape in advance, the cam surface 4a is engaged with the engagement hole 33a of the upper cone socket 33.
The upper cone 4 automatically rotates in the open direction (counterclockwise) against the elasticity of the spring means 6 by the rotation moment generated by being pressed against the edge of the upper fitting portion 2.
At the same time as it overlaps with the planar outer shape of b, it can pass through the engagement hole 33a, is actually inserted through the engagement hole 33a and is inserted into the upper cone socket 33, and at the same time when it has finished passing through the engagement hole 33a, the spring means is formed. 6 and is returned to the lock position shown in FIG. The upper fitting portion 2b of the case 2 has an engagement hole 33.
It is inserted in a state in which it is not rotated by a. The cone lock 1 is connected to the upper and lower cone sockets 33 and 34, respectively, by the above operations.

(H) Removal work 2 1 When the upper container 31 of the containers 31 and 32 stacked above and below is lifted by a crane or the like and lowered from above the lower container 32, prior to this, the manual operation part 7 is used. Is operated to rotate the upper cone 4 from the lock position to the open position, and the manual operation unit stopping means 9 fixes the position. Then, the upper container 31 is lifted by a crane or the like, and at this time, the upper cone 4 is pulled out from the upper cone socket 33 relative to each other.

(I) Removal work 2-2 Then, the cone lock 1 is attached to the lower cone socket 34.
When removing from above, hold the upper cone 4 in your hand and rotate it manually in the open direction (left direction) to rotate the lower cone 5 from the locked position to the open position. Pull out from the socket 34. Therefore, the cone lock 1 is detached from the upper and lower cone sockets 33 and 34 by the above-mentioned operations of chi and re.

As a further configuration, the cone lock 1 is provided with an upside down attachment prevention mechanism 21 having the following structure in order to prevent the upside down attachment.

That is, the upper fitting portion 2 in the case 2
The upper surface 2e of b is provided with a small hole 2f.
A stopper member 22 having a pin shape is inserted in f so as to be capable of projecting and retracting. The pin-shaped stopper member 22 protrudes from the upper surface 2e of the upper fitting portion 2b so that it can be retracted by its own weight.
At the time of the protrusion, the upper cone 4 protrudes laterally to prevent the upper cone 4 from rotating. The formation position of the small hole 2f, that is, the disposition of the stopper member 22 is immediately beside the rotation direction of the upper cone 4 in the open position in the locked position as shown in FIG. 4 can hardly move from the locked position, and the shaft 3 and the lower cone 5 can accordingly hardly move from the initial position or the locked position. The stopper member 22 is formed of a rigid material such as metal and has an upper fitting portion 2b.
Has a pin-shaped stopper portion 22a with which the upper cone 4 abuts when protruding, and a retaining head portion 22b for retaining the stopper member 22 from the case 2. . In addition, this stopper member 2
A beam-shaped stopper stroke limiting portion 2g is provided inside the case 2 so that the case 2 does not excessively sink into the case 2.

As shown in FIG. 2, the cone lock 1
The stopper member 22 is retracted into the case 2 due to its own weight when the vertical direction is normal. Therefore, the rotation of the upper cone 4 is not blocked, and the cone lock 1 normally operates as described above. On the other hand, as shown in FIGS. 4 and 5, when the cone lock 1 is turned upside down, the stopper member 22 projects from the upper surface 2e of the upper fitting portion 2b of the case 2 by its own weight and the upper cone 4
The rotation of the cone lock 1 is blocked together with the rotation of the shaft 3 and the lower cone 5 to prevent the cone lock 1 from being mounted in the opposite directions. Therefore, according to the cone lock 1 provided with the upside down opposite attachment preventing mechanism 21, the upside down opposite attachment is prevented in advance, so that the cone lock 1 can be prevented from prematurely dropping due to this. .

In this embodiment, one pin-shaped stopper member 22 is provided on the upper fitting portion 2b of the case 2. However, if there is a risk of insufficient strength or breakage, reference numeral 22 in FIG. The second stopper member 22 may be arranged at a point symmetrical position indicated by '.

[0036]

The present invention has the following effects.

That is, in the cone lock according to each of the claims of the present invention having the above-mentioned structure, when the cone lock is mounted upside down, the rotation of the cone is blocked to prevent the cone lock from being mounted upside down. Since the orientation mounting prevention mechanism is provided, it is possible to prevent the cone lock from being mounted upside down, and thereby prevent the cone lock from dropping early due to the installation of the cone lock upside down. it can. Therefore, it is possible to provide a highly safe product in which the cone lock does not drop at a relatively small rotation angle. Also, when the stopper member of the upside-down opposite mounting prevention mechanism moves by its own weight to prevent rotation of the cone, or when the stopper cone of the upper fitting part of the case protrudes so that it can be retracted and retracted by its own weight to prevent rotation of the upper cone. In the case of a pin-shaped block, the stopper is operated without the need for a drive source, so there are few failures, the structure is relatively simple, and a cost-effective product can be provided. .

[Brief description of drawings]

FIG. 1 is a plan view of a cone lock according to an embodiment of the present invention.

FIG. 2 is a front view of the cone lock.

3 is a sectional view taken along line AA in FIG.

FIG. 4 is a plan view of the cone lock in a state in which the cone lock is turned upside down.

FIG. 5 is a front view of the cone lock in a state in which the cone lock is turned upside down.

[Explanation of symbols]

1 cone lock 2 cases 2a Support board part 2b Upper fitting part 2c Lower fitting part 2d inner surface 2e Upper surface 2f small hole 2g Stopper stroke limiter 3 axes 3a contact part 4 upper cone 4a, 5a Engaging ends 4b, 5b cam surface 5 lower cone 6,12 spring means 7 Manual operation part 8 wires 9 Manual operation part stop means 10 hands 11 Base material 11a, 11b Notch 21 Upside down mounting prevention mechanism 22 Stopper member 22a Stopper part 22b retaining head 31 upper container 32 Lower container 33 Upper cone socket 33a, 34a Engagement holes 34 Lower cone socket

Claims (3)

[Claims] 1. A cone lock having an upper cone that engages with the upper cone socket and a lower cone that engages with the lower cone socket, wherein the cone lock is mounted when the cone lock is mounted upside down. A cone lock having an upside-down opposite mounting prevention mechanism that prevents the rotation of the blade and prevents the mounting. 2. The cone lock according to claim 1, wherein the upside down attachment preventing mechanism has a stopper member that moves by its own weight to prevent rotation of the cone. 3. The cone lock according to claim 2, wherein the stopper member is a pin-shaped stopper member that projects from the upper surface of the upper fitting portion of the case so that it can be retracted and retracted by its own weight to prevent rotation of the upper cone. Cone rock.