JP3204084U - Spanner for turnbuckle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turnbuckle spanner that can improve operability and has a simple structure and is inexpensive. A wrench 1 for a turnbuckle comprising a wrench head 2 having an open cut portion 6 that meshes with a body portion of the turnbuckle and a rod-like operation lever 3 having one end fixed to the outer periphery of the wrench head. The turnbuckle spanner is characterized in that the opening direction of the tip of the notch 6 with respect to the long axis of the operation lever 3 is an angle selected from an angle range of 20 degrees to 90 degrees. [Selection] Figure 1

Description

  The present invention relates to a turnbuckle spanner.

  The turnbuckle is a well-known metal member that adjusts the tension of a lashing member such as a wire rope or a tie rod or a support wire (hereinafter collectively referred to as a lashing member), and is attached to both ends of the body of the turnbuckle. The female screw of the reverse screw (right screw and left screw) is cut. Such a turnbuckle is used for screwing a connecting tool in which a lashing member is connected to female screws at both ends, and rotating the trunk to tighten the tying member connected to both ends. Further, the tying member can be loosened by rotating the body part in the opposite direction, and it is used in a wide range of applications that require adjustment of tension such as tying.

  In general, a rod-shaped tool or a spanner is widely used as a tool for rotating the body of the turnbuckle. The turnbuckle spanner includes a spanner head having an open cut portion that meshes with a body portion of the turnbuckle, and a rod-shaped operation lever having one end fixed to the outer periphery of the spanner head. In particular, in order to improve operability, a turnbuckle spanner provided with a known ratchet mechanism in the spanner head has been proposed (Patent Document 1). According to this, a C-shaped annular head main body having an opening that can be inserted into the body of the turnbuckle, a disk member rotatably held inside the C-shaped annular of the head main body, and the disk A gear member is fixed to the outer periphery of the member. The disc-shaped member is formed with a concave cut portion having an insertion surface corresponding to the meshing surface of the body portion of the turnbuckle, and the gear member is provided with a notch corresponding to the opening of the cut portion of the disc-shaped member. It has been. The ratchet mechanism is configured by urging a ratchet pawl pivotally supported by the head main body portion with a spring so as to engage with a tooth in a tangential direction of the gear member. The rotation direction of the disk member can be defined according to the direction in which the ratchet pawl is engaged with the gear.

  In the case of a turnbuckle spanner equipped with a ratchet mechanism, the control lever is repeatedly reciprocated within a certain angle range (for example, 30 to 180 °) with respect to the center of rotation of the disk member of the spanner head, thereby fixing a wire rope or the like. Since the binding member can be tightened, the operability is excellent. Moreover, it is comprised so that the effective rotation direction which a ratchet meshes can be switched by switching a ratchet mechanism.

  By the way, as described in Patent Document 1, the opening direction opened at the tip of the cut portion of the spanner head is generally inclined, for example, by 0 ° to 15 ° with respect to the longitudinal axis of the operation lever. . However, the wrench for the turnbuckle of Patent Document 1 does not consider operability when used for a turnbuckle for container lashing, for example. That is, when a container mounted on a container ship is secured to the hull with a wire rope, or when multiple stacked containers are secured to each other with a wire rope, the turnbuckle is close to the outer wall surface of the container. Are often located. For example, if the direction of the meshing surface of the spanner on the trunk of the turnbuckle is parallel to the outer wall surface of the container, the operation lever is parallel to the wall surface and the meshing surface of the turnbuckle is inserted into the notch of the spanner head. The lever is rotated to tighten the wire rope. In this operation, if the spanner head rotates and the tip of the notch comes into contact with the outer wall of the container, depending on the tension of the wire, the corner of the notch may damage the outer wall, or the notch may be caught on the outer wall. The lever may not rotate smoothly. In such a case, the operator tries to operate the lever of the spanner while pulling the spanner lever to the side (near side) in order to create a gap between the spanner head and the container wall. The spanner may come off from the turnbuckle. Alternatively, the operation lever is reciprocated by operating the ratchet mechanism within an angle range (for example, 90 or less) in which the corner portion of the cut portion does not contact the outer wall surface of the container, resulting in poor workability.

  On the other hand, the turnbuckle wrench described in Patent Document 2 does not open the cut portion like a wrench, so that the operation lever can be reciprocated in a wide angle range (for example, 180 °). In other words, the turnbuckle wrench described in Patent Document 2 is provided with an insertion hole having two surfaces corresponding to the meshing surface of the turnbuckle on a disk member having a gear member of a ratchet mechanism on the outer periphery. Therefore, there is no problem of damaging the outer wall surface of the container at the corners of the cut portion.

Japanese Utility Model Publication No. 61-28690 Reality Fair 8-138

  However, according to the turnbuckle wrench described in Patent Document 2, the turnbuckle connected to a securing member such as a wire rope is inserted into the insertion hole, so that the structure is complicated and expensive. There is. That is, it is necessary to divide the ring member, the disk member, and the gear member that constitute the wrench head into two, to provide a hinge structure that can be opened and closed, and to assemble the disk member and the gear member to the ring member so as to be rotatable. In addition, it is necessary to prepare a plurality of disk members and ratchet gears having insertion holes that match the size of the turnbuckle, which increases the cost.

  The problem to be solved by the present invention is to provide a turnbuckle spanner that can improve operability and has a simple structure and is inexpensive.

  In order to solve the above-described problems, the present invention includes a spanner head having an opening cut portion that meshes with a body portion of a turnbuckle, and a rod-shaped operation lever having one end fixed to the outer periphery of the spanner head. In the turnbuckle spanner, the opening direction of the tip of the notch with respect to the long axis of the operation lever is an angle selected from an angle range of 20 degrees to 90 degrees.

  A description will be given of an operation when the turnbuckle located near the outer wall surface of the container is further tightened by the turnbuckle spanner of the present invention. First, the angular range in which the operation lever can be rotated by engaging the turnbuckle with the turnbuckle located near the container outer wall surface is assumed to be an angle range in which the operation lever is parallel to the container outer wall surface. Under the assumption, the case where the direction of the meshing surface of the body portion of the turnbuckle is perpendicular to the outer wall surface of the container will be examined. In this case, according to the present invention, the operation lever can be rotated within a range of 180 degrees between two positions where the operation lever is parallel to the outer wall surface of the container. On the other hand, in the case of the conventional turnbuckle spanner of Patent Document 1, the operation lever is rotated only within a range of 90 degrees from a position perpendicular to the container outer wall surface to a position parallel to the container outer wall surface. I can't.

  On the other hand, the case where the direction of the meshing surface of the body part of the turnbuckle is parallel to the outer wall surface of the container will be examined. In this case, according to the present invention, the operation lever can be rotated in a range of 90 degrees from a position perpendicular to the container outer wall surface to a position parallel to the container outer wall surface. On the other hand, in the case of the conventional turnbuckle spanner of Patent Document 1, 90 degrees from the position where the operation lever is parallel to the container outer wall surface to the position where the corner of the insertion port reaches the container outer wall surface. There are cases where the control lever can only be rotated back and forth only within a weak range. This is because when the turnbuckle is pulled toward the container wall by retightening, the operator pulls the lever of the turnbuckle toward the near side and tries to separate the turnbuckle and the spanner from the container wall. It is because there is a possibility of coming off. As will be described later, if the turnbuckle spanner of the present invention is provided with a ratchet mechanism, the reciprocating operation can be repeated in an angle range exceeding 90 degrees, so that the operability can be further improved. .

  In the present invention described above, it is preferable that the opening direction of the cut portion with respect to the long axis of the operation lever is an angle selected from an angle range of 60 degrees to 90 degrees. According to this, the angle range of rotation operation can be expanded compared with the past.

  Furthermore, in any one of the above-described inventions, the spanner head has an outer shape of a part away from a part where the operation lever is fixed, the center line in the opening direction of the cut portion and the long axis of the operation lever. It is preferable to have an arc part centering on the intersection. According to this, even when the outer peripheral surface of the spanner head is in contact with the outer wall surface of the container, the turnbuckle spanner can be smoothly rotated.

  Furthermore, it is preferable to provide a ratchet mechanism in any of the above-described turnbuckle spanners of the present invention. As one aspect thereof, the spanner head includes a C-shaped annular head main body having an opening that can be inserted into the body of the turnbuckle at a position corresponding to the opening direction of the notch, and an inner side of the head main body. A disc member having the cut portion rotatably held on the disc member, a C-shaped annular gear member having an opening corresponding to the opening of the cut portion, which is fixed to the outer periphery of the cut portion of the disc member, and the gear member And a ratchet mechanism for defining the rotation direction of the disk member. Moreover, it is preferable that the ratchet mechanism includes a switching mechanism that regulates the rotation direction in different directions. According to this, the turnbuckle spanner can be engaged with the body portion of the turnbuckle without considering the rotation direction of the turnbuckle, and the operability is further improved.

  Further, in the turnbuckle spanner according to any one of the above aspects, the spanner head is provided with screw holes on a flat plate surface of the spanner head (or a disk surface of the disk member) with the notch portion interposed therebetween, and the notch portion. It is preferable that an adjusting member for adjusting the interval between the two insertion surfaces facing each other is detachably attached to the screw hole. According to this, it is possible to easily cope with turnbuckles of different sizes by attaching adjusting members having different plate thicknesses according to the size of the turnbuckle.

  According to the present invention, it is possible to provide a turnbuckle spanner that can improve operability and has a simple structure and is inexpensive.

It is a figure which shows the structure of one Embodiment of the spanner for turnbuckles of this invention. It is a figure which decomposes | disassembles and shows the spanner head main-body part of FIG. 1 embodiment. It is a figure which shows the structure of the disk member and gear member of FIG. It is a figure explaining the structure and operation | movement of a ratchet mechanism of FIG. 1 embodiment. It is a figure which shows the switching lever of the ratchet mechanism of FIG. It is a schematic diagram explaining the operating method of the spanner for turnbuckles of one Embodiment of this invention.

  Hereinafter, the present invention will be described based on embodiments.

  In FIG. 1, the structure of the spanner for turnbuckles of one Embodiment of this invention is shown. FIG. 4A is a front view, and FIG. 4B is a side view. As shown in the figure, the turnbuckle spanner 1 according to this embodiment includes a spanner head 2 and a rod-like operation lever 3 fixed to the outer periphery of the spanner head 2. The spanner head 2 includes a C-shaped annular head main body 5 having an opening 4 into which a turnbuckle body (not shown) can be inserted, and a notch 6 that is rotatably held inside the head main body 5. A disk member 7 having a C-shaped annular shape, which is fixed to the outer periphery excluding the opening of the notch 6 of the disk member 7 and has an opening corresponding to the opening 8 of the notch 6, not shown in FIG. 1. It is prepared for. The operation lever 3 is composed of two operation levers 3a and 3b formed to be extendable and contractible.

  The spanner head 2 has an arc portion whose outer shape away from the portion where the operation lever 3 is fixed has an arc portion centering on the intersection of the center line in the opening direction X of the cut portion 6 and the long axis of the operation lever 3. Is preferred. In this embodiment, although the back surface 2a of the opening part 4 is made flat, it may replace with this and may form in a circular arc. The cut portion 6 of the head main body portion 5 has an insertion surface 6a having an interval corresponding to the interval between the meshing surfaces of the body portion of the turnbuckle. In this embodiment, as shown in FIG. 1 (b), the insertion surface 6a has a pair of adjustment members 10 formed in a U-shaped cross section attached to the insertion surface 6a side of the disk member 7, It can be adjusted to the meshing surface of the turnbuckle. Therefore, a pair of screw holes 11 for attaching the adjusting member 10 to the disk member 7 is provided in order to attach the adjusting member 10 to the disk member 7 in a detachable manner. The gear member 9 not shown in FIG. 1 is one of the members constituting a ratchet mechanism that defines the rotation direction of the disk member, and the ratchet mechanism will be described later.

  Here, the configuration of the spanner head 2 will be described with reference to FIG. As shown in FIGS. 1B and 2A to 2C, the spanner head 2 of the present embodiment includes a C-shaped annular lower cover 5a, a housing 5b, and an upper cover made of three plate-like members. 5c. The housing 5b is a three-ply middle plate-like member, the lower cover 5a is rotated 90 degrees and superimposed on the back side in the figure of the housing 5b, and the upper cover 5c is rotated 90 degrees and is the surface in the figure of the housing 5b. The screw 12 is screwed onto the lower cover 5a with the housing 5b sandwiched from the upper cover 5c side. In addition, the screw hole of the lower cover 5a in which the screw 12 can be screwed is formed in the back surface in FIG.

  Next, the structure of the disk member 7 and the gear member 9 which are rotatably incorporated in the spanner body 5 of the spanner head 2 will be described with reference to FIGS. As shown in FIG. 3, the disk member 7 and the gear member 9 are integrally formed in this embodiment. The disk member 7 has a thick portion 7 a having an outer diameter that is slidably fitted to the inner peripheral surface 5 d of the C-shaped annular spanner main body portion 5. The gear member 9 is formed on the outer periphery of the thick portion 7a of the disk member 7 and has a plurality of gears 9a that are thinner than the thick portion 7a. The C-shaped annular spanner body 5 is formed with thin portions 5e and 5f for rotatably accommodating the gear 9a of the gear member 9. The outer peripheral edges 5g and 5h of the thin portions 5e and 5f are formed larger in diameter than the outer diameter of the gear member 9. Further, the disk member 7 and the gear member 9 have an opening 8 into which the meshing surface of the body portion of the turnbuckle can be inserted, and the disk member 7 has an insertion surface 6a with an interval corresponding to the interval between the engagement surfaces of the turnbuckle. The notch part 6 having is formed. Further, a counterbore 7b for avoiding interference with the adjusting member 10 described later is provided at the corner at the back of the inner surface of the cut portion 6. Furthermore, an opening 7c for reducing the thickness is provided as appropriate.

  Next, the ratchet mechanism of the present embodiment will be described with reference to FIGS. 4A and 4B show the ratchet mechanism in a state where the upper cover 5c of the spanner head portion 5 is removed. FIG. 4A shows a state where the disk member 7 is effectively rotated in the same direction when the operation lever 3 is rotated in the direction of the arrow A shown in the figure. FIG. 4B shows a state where the disk member 7 is effectively rotated in the same direction when the operation lever 3 is rotated in the direction of the arrow B shown in the figure. When rotating in the opposite directions, the ratchet mechanism is disengaged, and even if the operation lever 3 is rotated, the disk member 7 is not rotated, and is in a so-called free state. Switching to the effective rotation direction of the disk member 7 can be performed by the ratchet switching mechanism 25. That is, the ratchet mechanism of the present embodiment is configured to define the effective rotation direction of the spanner head 2 in different directions.

  Here, the structure of the ratchet mechanism of the present embodiment will be described in detail. In the present embodiment, a pair of ratchet claws for the A direction and for the B direction are provided so as to have sufficient biting strength. That is, the ratchet pawls 21a and 21b for the A direction and the ratchet pawls 22a and 22b for the B direction can be freely rotated on the pins 23 along the outer periphery of the gear member 7 with the longitudinal axis of the operation lever 3 interposed therebetween. I support it. Further, the ratchet claws 21a and 21b for the A direction are urged clockwise by a coil spring 24 in the drawing. On the other hand, the ratchet claws 22a and 22b for the B direction are urged counterclockwise in the drawing by the coil spring 24.

  As shown in FIG. 5, the ratchet switching mechanism 25 includes an arc-shaped switching arm 25a and a switching lever 25b. The switching arm 25a is provided along the outer peripheral portion of the gear member 9 so as to be positioned on the back side of the gear 9a in FIG. Protrusions 26a, b are provided at both ends of the switching arm 25a, and the projecting parts 26a, b are positioned outside the projecting part of the gear 9a, and the outer peripheral walls of the thin parts 5e, 5f of the housing 5b and the upper cover 5c. Are slidably provided. Note that the protrusions 26a and 26b are assembled to be positioned on the back side of the switching arm 25a in FIG. Further, the positions of the projections 26a, b on the arc are set so that the ratchet pawls 22a, 22b are pushed up to a position outside the rotation range of the gear 9a when the position of the switching lever 25b is FIG. 4 (a). . On the other hand, when the position of the switching lever 25b is as shown in FIG. 4 (b), the ratchet pawls 21a and 21b are set to be pushed up to a position outside the rotation range of the gear 9a. The switching lever 25b is positioned in a recess 15 formed in the housing 5b, and a tip is positioned in a portion 15a exposed from the upper cover 5c.

  With reference to the schematic diagram shown in FIG. 6, description will be given of the operation when the turnbuckle located near the outer wall surface of the container is tightened by the turnbuckle spanner 1 of the present embodiment. As shown in the figure, the angular range in which the operation lever 3 can be rotated by engaging the turnbuckle spanner 1 with the turnbuckle 31 located in the vicinity of the container outer wall surface 30 is such that the operation lever 3 moves to the container outer wall surface 30. Assume a range of angles that are parallel. Under the assumption, the case where the direction of the meshing surface 32 of the trunk portion of the turnbuckle 31 is perpendicular to the container outer wall surface 30 as shown in FIG. In this case, according to the present embodiment, as shown in the drawing, the operation lever 3 is rotated within a range of 180 degrees from the first position 33 where the operation lever 3 is parallel to the container outer wall surface 30 to the second position 34. can do. Also, even if the tightening force increases the pulling force of the turnbuckle against the container wall, the operator can easily create a gap between the spanner and the container wall by pulling the lever toward you. There is no need to worry about losing. On the other hand, in the case of the conventional turnbuckle spanner of Patent Document 1, the operation lever is parallel to the container outer wall surface 30 from a vertical position as shown by a two-dot chain line in FIG. The control lever 3 can be rotated only within the range of 90 degrees to the position, and when the operator tries to make a gap between the container wall 30 and the turnbuckle, the turnbuckle is worried that it will come off the spanner. Must. This is because, in many cases, an operator tries to create a gap by pulling the spanner to his / her side.

  Next, the case where the direction of the meshing surface 32 of the trunk portion of the turnbuckle 31 is parallel to the container outer wall surface 30 as shown in FIG. In this case, according to the present embodiment, as shown in the figure, the operation lever 3 can be rotated within a range of 90 degrees from a position perpendicular to the container outer wall surface 30 to a position parallel to the container outer wall surface 30. On the other hand, in the case of a conventional turnbuckle spanner, as shown by a two-dot chain line in FIG. In some cases, the operation lever can be rotated only within a range of less than 90 degrees until the position reaches the container outer wall surface 30. This is because the turnbuckle may come off from the spanner as the wire tension increases.

  When the direction of the meshing surface 32 of the turnbuckle is vertical, the opening corner of the cut portion 6 of the spanner head 2 faces the outer wall surface of the container at the initial stage of meshing, which may damage the outer wall surface. In this case, for example, a tool such as a round bar is inserted into the body opening of the turnbuckle and turned, and the direction of the meshing surface is shifted from the vertical direction to a desired direction so that the corner of the cut portion 6 is moved to the outer wall surface of the container. It is preferable to remove from the facing position.

As described above, according to the turnbuckle spanner 1 of the present embodiment, the rotation operability of the turnbuckle can be improved, and the structure can be provided simply and inexpensively. However, the present invention is not limited to the above-described embodiment, and can be implemented in a form modified or changed within the scope of the gist of the present invention. In short,
(1) The opening direction of the notch portion with respect to the long axis of the operation lever of the turnbuckle spanner may be an angle selected from an angle range of 20 degrees to 90 degrees, preferably 60 degrees to 90 degrees. According to this, the container can be rotated without damaging the outer wall surface of the container at least in a wider angle range than the conventional turnbuckle spanner.
(2) Since the spanner head 2 has a circular shape or a shape obtained by connecting two semicircles with a gentle curved surface, the turnbuckle can be smoothly rotated without damaging the outer wall surface of the container.
(3) Since the spanner head 2 is provided with screw holes for detachably attaching the adjusting member 10 between the two surfaces on each of the two opposing surfaces of the cut portion 6, the size of the turnbuckle is small. Different cases can be accommodated. However, it goes without saying that the adjustment member 10 is not necessary if the size of the turnbuckle used for securing the container is the same.
(4) Although the ratchet mechanism does not need to be provided, it is preferable to provide it because the operability can be improved.

DESCRIPTION OF SYMBOLS 1 Turn wrench spanner 2 Spanner head 3 Operation lever 4 Opening part 5 Head main-body part 6 Cutting part 7 Disk member 8 Opening 9 Gear member 10 Adjustment member 11 Screw hole 15 Recesses 21a, 21b Ratchet claw 22a, 22b Ratchet claw 23 Pin 24 Coil spring 25 Ratchet mechanism 25a Ratchet arm 25b Switching lever 26a, 26b Projection

Claims (7)

In a turnbuckle spanner comprising a spanner head having an open cut portion that meshes with a body portion of a turnbuckle, and a rod-shaped operation lever having one end fixed to the outer periphery of the spanner head,
The turnbuckle spanner characterized in that the direction of the tip opening of the cut portion with respect to the long axis of the operation lever is an angle selected from an angle range of 20 degrees to 90 degrees. The turnbuckle spanner according to claim 1,
The turnbuckle spanner, wherein an opening direction of the cut portion with respect to the long axis of the operation lever is an angle selected from an angle range of 60 degrees to 90 degrees. The turnbuckle spanner according to claim 1 or 2,
In the spanner head, the outer shape of the part away from the part where the operation lever is fixed has an arc part centering on the intersection of the center line in the opening direction of the cut part and the long axis of the operation lever. A wrench for turnbuckle. The turnbuckle spanner according to claim 3,
The spanner head has a C-shaped annular head main body having an opening that can be inserted into the body of the turnbuckle at a position corresponding to the opening direction of the notch, and is rotatably held inside the head main body. A disc member having the cut portion formed therein, a C-shaped annular gear member having an opening corresponding to the opening of the cut portion, which is fixed to the outer periphery of the disc member excluding the tip opening of the cut portion, and the gear member A turnbuckle spanner comprising a ratchet mechanism that engages and defines the rotation direction of the disk member. The turnbuckle spanner according to claim 4,
The ratchet mechanism includes a switching mechanism that regulates the rotation direction in a different direction. The turnbuckle spanner according to claim 1 or 2,
The spanner head is provided with a screw hole for detachably attaching an adjustment member capable of adjusting a distance between two opposing surfaces of the insertion surface of the cut portion. The turnbuckle spanner according to any one of claims 3 to 5,
The turnbuckle spanner, wherein the disk member is provided with a screw hole for detachably attaching an adjustment member capable of adjusting a distance between two opposing surfaces of the insertion surface of the cut portion.

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