Wire rope fastener

Abstract

To provide a wire rope fastening fitting capable of easily making a ring for coupling at an anti-sway wire rope terminal, and facilitating the adjustment of length of the ring.SOLUTION: A wire rope fastening fitting is provided with a metal fitting body 10, a pinching plate 20, and a pressing bolt 30. The pinching plate 20 is screwed with the pressing bolt 30 from the metal fitting body 10 side. A wire P is pinched between the metal fitting body 10 and the pinching plate 20. A coil spring 50 is provided, which presses and energizes a head portion of the pressing bolt 30 from the metal fitting body 10. The wire P is temporarily fixed between the metal fitting body 10 and the pinching plate 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wire rope fastener suitable for use when making a connecting loop at the end of a wire rope for sway prevention, for example. [Background technology]

[0002] To prevent the wires used to secure various types of equipment from swinging, a stopper is fixed to the end of the wire rope to create a loop of any size, and the wire rope is then connected using this loop.

[0003] An example of such a fastening metal fitting is a fastener for connecting wire ropes, etc., described in Patent Document 1. This fastener is composed of a base portion with multiple protrusions and a U-bolt that secures the wire rope that is passed through the protrusions of the base portion. The wire rope that is sandwiched between the U-bolt and the base portion is tightened and fixed.

[0004] To form a connecting loop at the end of a wire rope using this fastener, as shown in Figure 8, the end of wire P is passed between base 100 and U-bolt 110, then rolled up to form a loop, and the end is passed through base 100 again, and U-bolt 110 is tightened. Therefore, multiple fasteners are used to form a connecting loop. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 5-59013 Summary of the Invention [Problem to be solved by the invention]

[0006] However, creating a connecting loop at the end of a wire rope using such fasteners requires adjusting the fastening force of each fastener individually, making the process of creating the connecting loop extremely difficult.

[0007] Furthermore, when adjusting the length of the U-bolt used in this fastening device, multiple nuts must be loosened even for temporary fastening, making adjusting the length of the connecting loop even more time-consuming and difficult.

[0008] Therefore, the present invention was created to solve the conventional problems, and aims to provide a wire rope fastener that makes it possible to easily create a connecting loop at the end of an anti-sway wire rope and also makes it easy to adjust the length of the loop. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the first means of the present invention is a wire rope fastener comprising a metal fitting body 10, a clamping plate 20, and a bolt member for screwing together the metal fitting body 10 and the clamping plate 20, and configured to clamp a wire P between the metal fitting body 10 and the clamping plate 20, A spring member is provided to bias the metal fitting body 10 and the clamping plate 20 in a direction in which they approach each other, The wire P is temporarily fixed between the metal fitting body 10 and the clamping plate 20 by the elastic force of the spring member. The metal fitting body 10 includes a plate-shaped top plate 11, and the top plate 11 includes a bolt insertion hole 11B through which the bolt member is inserted. As the bolt members, two bolt members, a pressing bolt 30 arranged on the front end side of the top plate 11 of the metal fitting body 10 and a fixing bolt 40 arranged on the rear end side, are inserted into the bolt insertion hole 11B of the top plate 11 of the metal fitting body 10, and the spring member is provided only on the pressing bolt 30, and the spring member is interposed between the head of the pressing bolt 30 and the top plate 11 of the metal fitting body 10, and the spring member is provided so as to press the head of the pressing bolt 30 from the top plate 11 of the metal fitting body 10. The reason is that

[0010] The spring member of the second means is a coil spring 50.

[0011] The spring member of the third means is a leaf spring.

[0012] The fourth means is either the metal fitting body 10 or the clamping plate 20, or both. Nowa The ear P clamping surface is provided with crimping projections 11C and 21C for crimping the wire P.

[0013] The fifth means is that the widths of the longitudinal ends of the metal fitting body 10 and the clamping plate 20 are formed wider than the widths of the longitudinal central portions.

[0014] No. 6 The means of The aforementioned The clamping plate 20 is screwed in place by the bolt member inserted through the bolt insertion hole 11B, and as the clamping plate 20 is tightened, it approaches the metal fittings main body 10, thereby clamping the wire P between the metal fittings main body 10 and the clamping plate 20.

[0015] No. 7 The means of Record The clamping plate 20 screwed to the bolt member is configured to be pulled up toward the top plate 11 of the metal fitting body 10 by the pressing force of the screw member. [Effects of the Invention]

[0019] According to the present invention, it is possible to easily form a connecting loop at the end of an anti-sway wire rope, and further, the length of the loop can be easily adjusted. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view showing an embodiment of a fastener of the present invention. [Figure 2] FIG. 2 is an exploded perspective view showing the fastener of the present invention. [Figure 3] FIG. 2 is a side view showing the fastener of the present invention. [Figure 4] FIG. 2 is a front view showing the metal fitting body of the present invention. [Figure 5] FIG. 2 is a side view showing the clamping plate of the present invention. [Figure 6] FIG. 2 is a front view showing the clamping plate of the present invention. [Figure 7] 1(a) to 1(d) are explanatory diagrams showing the procedure for using the present invention. [Figure 8] FIG. 10 is a perspective view showing a conventional fastening device. DETAILED DESCRIPTION OF THE INVENTION

[0021] The fastener of the present invention is composed of a metal fitting body 10, a clamping plate 20, and a bolt member (see Figure 1). The end of a wire P is clamped between the metal fitting body 10 and the clamping plate 20, and the bolt member is tightened to form a connecting loop (see Figure 7).

[0022] The metal fitting body 10 is a member having a U-shaped cross section, and includes a plate-like top plate 11 and a pair of side plates 12 facing each other on both sides along the longitudinal direction of the top plate 11 (see FIG. 2). Furthermore, a bolt member protruding from the top plate 11 side toward the clamping plate 20 is inserted into a bolt insertion hole 11B in the top plate 11.

[0023] The clamping plate 20 is then screwed in place with this bolt member, and is arranged so that as the bolt member is tightened, the clamping plate 20 approaches the metal fitting main body 10. At this time, a spring member is interposed between the head of the bolt member and the top plate 11, and the pressing force of this spring member causes the clamping plate 20, which is screwed to the bolt member, to be constantly pulled up toward the top plate 11 (see FIG. 3). Therefore, the action of the spring member keeps the clamping plate 20 constantly close to the metal fitting main body 10. Therefore, when a wire P is inserted between the metal fitting main body 10 and the clamping plate 20, the wire P is temporarily fastened by the biasing force of the spring member.

[0024] In the illustrated example, two bolt members, a pressure bolt 30 disposed on the front end side of the top plate 11 and a fixing bolt 40 disposed on the rear end side, are inserted into the bolt insertion hole 11B of the top plate 11 (see FIG. 2). The front end side of the top plate 11 is the side where the connecting loop is formed with the wire P.

[0025] On the other hand, a coil spring 50 is used as the spring member, and is arranged so as to press the head of the pressing bolt 30 from the top plate 11 (see FIG. 3). The number and arrangement of the bolt members are not limited to the illustrated example. A leaf spring can also be used as the spring member. The spring member in the embodiment is arranged on the tip end side of the top plate 11, but it may also be arranged on the rear end side or multiple springs may be arranged. Also, in the illustrated example, the spring member is arranged on the head of the pressing bolt 30, but if a nut is used instead of the burring tap 21B, the spring member may also be arranged on the tip end side of the pressing bolt 30.

[0026] The clamping plate 20 is a plate-like member arranged between the side plates 12 of the metal fitting body 10 so as to overlap the top plate 11, and includes a top plate 21 and a side plate 22 (see FIG. 2). The wire P is clamped between the top plate 21 of the clamping plate 20 and the top plate 11 of the metal fitting body 10. For this reason, crimping protrusions 11C, 21C are respectively provided on the wire P contact surfaces of the top plates 11, 21 (see FIG. 3). These crimping protrusions 11C, 21C are crimped in a point-like manner onto the side surfaces of the wire P, thereby increasing the clamping force for the wire P.

[0027] The clamping plate 20 also has two screw holes for screwing in the pressure bolt 30 and the fixing bolt 40. By forming burring taps 21B as these screw holes, the workability of the screwing work is improved (see FIG. 5). It is also possible to weld nuts to the clamping plate 20 as screw holes (not shown).

[0028] The procedure for forming a connecting loop at the tip of wire P using the fastener of the present invention is shown in Figure 7. First, the head of pressure bolt 30 is pressed with the fingers to open the gap between top plate 11 and clamping plate 20, and in this state wire P is inserted into the inside of fitting body 10 from the rear end side of fitting body 10 (see Figure 7 (A)).

[0029] When inserting the wire P into the metal fitting body 10, the wire P is held in one hand, so the pressure bolt 30 must be pressed with the other hand. For this reason, it is possible to attach a coil spring 50 to the rear bolt or to all the bolts, but in order to press the pressure bolt 30 while holding the metal fitting with one hand, it is much more efficient to attach a coil spring 50 only to the pressure bolt 30 on the tip side, as this makes it easier to press the bolt head with the thumb. Also, because the side plate 12 is curved inward, it is difficult for the bolt to shift position when held with one hand, making it easy to hold.

[0030] Next, the end of the wire P that was passed through the tip end of the metal fitting body 10 is returned and inserted back into the metal fitting body 10 (see FIG. 7(b)). This forms a connecting loop on the tip end side of the metal fitting body 10 (see FIG. 7(c)). In this state, the wire P inside the metal fitting body 10 is temporarily fixed in place by the action of the coil spring 50. At this time, the tightening force in the temporarily fixed state can be adjusted by manually tightening the pressure bolt 30 and the fixing bolt 40.

[0031] Once the size of the ring has been determined in the temporary fastening state, the pressing bolt 30 and the fixing bolt 40 are tightened with a tool to complete the installation (see FIG. 7(d)).

[0032] In the illustrated example, the widths of the tip end sides of the metal fitting body 10 and the clamping plate 20 are made wider to facilitate the task of returning the end of the wire P from the tip end of the metal fitting body 10 to the interior (see FIG. 2). In addition, an inclined surface is formed on the top plate 21 of the clamping plate 20 to facilitate the task of returning the looped end into the metal fitting body 10 (see FIGS. 2 and 6). Furthermore, in order to align the two wires P inside the metal fitting body 10, curved portions 12A that protrude inward of the metal fitting body 10 are formed on the side plates 12 of the metal fitting body 10 (see FIGS. 2 and 4).

[0033] The present invention is not limited to the illustrated example, and design changes such as changes to the components and types of cables are free to be made as long as they do not change the gist of the present invention. For example, the same effect can be obtained even if the bolts are inserted from the clamping plate 20, and the side plate 12 may be provided on the clamping plate 20. [Explanation of symbols]

[0034] P-wire 10 Metal fittings 11 Top plate 11A Tip 11B Bolt insertion hole 11C Crimping protrusion 12 Side panel 12A curved section 20 Sandwich plate 21 Top plate 21A Tip 21B Burring Tap 21C Crimping protrusion 22 Side panel 30 Press bolt 40 Fixing bolt 50 coil spring 100 Base 110 U-bolt

Claims

1. A wire rope fastener comprising a metal fitting body, a clamping plate, and a bolt member for screwing together the metal fitting body and the clamping plate, and configured to clamp a wire between the metal fitting body and the clamping plate, A spring member is provided to bias the metal fitting body and the clamping plate in a direction in which they approach each other, The wire is temporarily fixed between the metal fitting body and the clamping plate by the elastic force of the spring member. the metal fitting body includes a plate-shaped top plate, and a bolt insertion hole through which the bolt member is inserted in the top plate; a spring member disposed between the head of the pressure bolt and the top plate of the metal body, the spring member being arranged so as to press the head of the pressure bolt from the top plate of the metal body.

2. 2. A wire rope fastener according to claim 1, wherein said spring member is a coil spring.

3. 2. A wire rope fastener according to claim 1, wherein said spring member is a leaf spring.

4. 4. A wire rope fastener as described in any one of claims 1 to 3, wherein a crimping protrusion for crimping the wire is provided on the wire clamping surface of either or both of the fixture body and the clamping plate.

5. 5. The wire rope fastener according to claim 1, wherein the widths of the longitudinal ends of the fastener body and the clamping plate are formed wider than the widths of the longitudinal center portions.

6. A wire rope fastener as described in any one of claims 1 to 5, configured so that the clamping plate is screwed in place with the bolt member inserted through the bolt insertion hole, and the clamping plate approaches the metal fitting body as the bolt member is tightened, thereby clamping the wire between the metal fitting body and the clamping plate.

7. A wire rope fastener as described in any one of claims 1 to 6, configured so that the clamping plate screwed to the bolt member is pulled up toward the top plate of the metal fitting body by the pressing force of the spring member.

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