CN109386573B

CN109386573B - Belt fastener

Info

Publication number: CN109386573B
Application number: CN201710683106.XA
Authority: CN
Inventors: 久保田仁
Original assignee: Iwabuchi Corp
Current assignee: Iwabuchi Corp
Priority date: 2017-08-10
Filing date: 2017-08-10
Publication date: 2020-12-29
Anticipated expiration: 2037-08-10
Also published as: CN109386573A

Abstract

Provided is a belt fastener which can make a closed rotating rod difficult to separate from a base part, can reliably and firmly fasten a resin belt to prevent looseness, and can improve operability by adding a temporary fixing function for temporarily fixing rotation of the resin belt and the rod. Locked holes (12b 1) are provided in locked portions (12b ) of a base portion (12), the locked holes (12b 1) have locked slant portions (12b11 ) whose top surfaces are gradually inclined upward from the inside to the outside, while locked slant portions (11c 1) are provided in locked portions (11c, 11c1) of a rotating lever (11), the locked slant portions (11c 1) are gradually inclined upward from the inside to the outside when the rotating lever (11) is closed to the base portion (12) to lock the locked slant portions (12b11 ) of the locked holes (12b1 ).

Description

Belt fastener

Technical Field

The present invention relates to a band fastener for attaching a resin band having a plurality of core wires embedded therein to a utility pole or for use in a package or the like, the band fastener including a rotating lever that rotates while stretching the resin band, and a base portion that rotates and locks the rotating lever.

Background

In recent years, polyester or stainless steel tapes that are substantially inextensible have been used for fixing cables, wire pipes, protective boards, and the like to the peripheral surface of utility poles, or for attaching supports such as advertisements and street lamps. As such a fastener for a belt, the other end of the belt is locked to a base portion, a rotating lever for fastening the belt is rotatably attached to the base portion, one end side of the belt is pulled by a winding shaft of the rotating lever, a tensile force (tension) is applied to the belt, and the rotating lever is locked to the base portion in a state where the tensile force is applied to the belt, thereby attaching the belt to a utility pole or the like. In this type of belt fastener, the tension of the belt gradually increases as the rotating lever is closed, and an excessive load is required at the time of final fastening, so if the belt fastener is a stretchable belt, fastening can be easily performed without any problem, but in the case of a polyester or stainless steel belt which is substantially free from stretchability, a method of reducing the excessive load at the time of final fastening is required.

In view of the above, a tape fastener is proposed (for example, see patent document 1), which is a tape fastener of a tape having substantially no extensibility, and which includes a rotating lever for fastening a tape, a tape insertion hole formed near a base portion of the rotating lever, one end of the tape connected and fixed to a fastener main body, a guide hole through which the tape is inserted into the tape insertion hole, and a guide hole continuously communicating with the guide hole when the rotating lever is raised outward of the fastener main body, wherein the other end of the tape is inserted into the tape insertion hole while the rotating lever is raised outward of the fastener main body, and the rotating lever is tilted toward the fastener main body.

Patent document 1: patent No. 3880657.

Recently, however, a resin belt in which a plurality of substantially inextensible core wires such as aramid fibers, glass fibers, and steel wires (wires) are incorporated in a resin member is used, as compared with a metallic belt made of stainless steel or the like.

However, in the above-described conventional tape fastener, only "the locking projections 23 are integrally provided on both side portions of the free end side of the operating lever 2, and the operating lever 2 is locked by locking the locking projections 23 to the locking holes 13 provided on the main body side" and "the locking projections are engaged with the locking holes of the base portion" as shown in fig. 4 of the patent, that is, fig. 18 of the present application, since the locking projections having the tip end of the lever with the isosceles triangle cross section are engaged with the locking holes of the base portion, even when the tape is passed through the lever and is in a locked (fully closed) state with respect to the base portion, there is a problem that the locking projections at the tip end of the lever are easily disengaged from the locking holes at the tip end of the base portion by a force acting on the lever due to a tensile force acting on the tape.

In particular, since the resin band is more easily stretched and more easily changed with time than the metal band, a stretching force larger than that of the metal band needs to be applied at the initial stage of fastening, and therefore, in the above-described conventional band fastener, the locking projection having the cross section of the rod tip in the shape of an isosceles triangle is easily disengaged from the locking hole of the base portion.

Further, in the above-described conventional belt fastener, there is a problem that operability is poor in this respect, since a so-called temporary fixing function for temporarily fixing rotation of the belt or the lever is not provided in the process of moving the lever from the wide open state to the fully closed state after the belt is passed through the lever.

Disclosure of Invention

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a tape fastener which can make it difficult for a closed rotating lever to be detached from a base portion, can securely and firmly fasten a resin tape to prevent looseness, and can improve operability by adding a temporary fixing function of temporarily fixing rotation of the resin tape and the lever.

In order to solve the above-mentioned problems, a tape fastener according to the present invention is a tape fastener including a rotating lever that rotates while stretching a resin tape having a plurality of core wires embedded therein, and a base portion that rotates and locks the rotating lever, the tape fastener being configured to fasten and attach the resin tape to an object such as a utility pole,

the rotating lever is provided with a locking portion on a distal end portion side of the rotating lever, a tape winding portion and a rotating shaft portion on a proximal end portion side of the rotating lever,

the belt winding part is provided with:

a belt insertion hole through which one end of the resin belt passes from the tip end portion side of the rotating lever,

a belt stretching portion which is located closer to a tip end portion side of the rotating lever than a rotation center of the rotating shaft portion, and which applies a stretching force to the resin belt by winding the resin belt and stretching one end side of the resin belt when the rotating lever is rotated from the open state to the locked state,

the base part is provided with:

a belt locking part for locking the other end of the resin belt,

a rotating shaft supporting portion that rotatably supports the rotating shaft portion of the rotating lever,

a locked portion for locking the locking portion of the rotating lever,

the locked part of the base part is provided with a locked hole which is provided with a locked inclined surface part with a top surface gradually inclining upwards from the inner side to the outer side,

the locking portion of the rotating lever is provided with a locking slant portion which is inclined upward from the inside to the outside when the rotating lever is closed to the base portion, and is locked to the locked slant portion of the locked hole.

Here, a raised portion is provided at the distal end portion of the rotating lever, the raised portion being raised at the center than at both sides.

In addition, in the rotating shaft portion of the rotating lever, the size of the outer diameter of the left and right rotating shaft portions is changed,

the left and right rotation axis support portions of the base portion have bearing holes respectively supporting the left and right rotation axis portions of the rotation axis, and the left and right bearing holes have inner diameters corresponding to the sizes of the outer diameters of the left and right rotation axis portions of the rotation axis.

Further, a state switching projection is provided at a rear end portion of the base portion, and the state switching projection is engaged with an engaging end portion of the tape stretching portion of the tape winding portion, the engaging end portion being separated from the tape insertion hole, when the rotating lever attached to the base portion is rotated,

when the state switching projecting portion is located on the belt stretching portion side, a wide open state in which the rotating lever is widely opened with respect to the base portion is maintained, and when the engaging end portion passes over the state switching projecting portion by rotating in a direction in which the rotating lever is closed from the wide open state, the resin belt is temporarily fixed by sandwiching the resin belt between the end portion on the belt outlet side of the belt insertion hole in the belt winding portion and the belt bending sandwiching projecting portion of the base portion.

Further, when the rotating lever around which the resin tape is wound is rotated to be in a locked state in which the locking portion is locked to the locked portion of the base portion, the resin tape is sandwiched between the state switching projection and an end portion of the tape winding portion on the opposite side from the side where the tape stretching portion is formed, of the end portion on the tape outlet side of the tape insertion hole.

Further, an end portion of the tape winding portion on the opposite side to the side on which the tape stretching portion is formed, of the end portion of the tape exit side of the tape insertion hole, is formed at a smaller acute angle than an end portion of the tape exit side of the tape insertion hole on the side on which the tape stretching portion is formed and both upper and lower end portions of the tape entry side of the tape insertion hole.

Further, the base portion is provided with a winding portion rotating recessed portion which is formed as a recess so as to allow the tape winding portion around which the resin tape is wound to rotate, and a gap is formed between the winding portion rotating recessed portion and the tape winding portion,

in the rotating lever, a central opening portion is further formed between a tip end portion side of the rotating lever and the belt winding portion, and a main bridge portion connected to both right and left side surfaces is formed in the central opening portion,

a belt bending clamping convex portion is formed on a belt outlet side of the winding portion rotating concave portion in the base portion, the belt bending clamping convex portion protrudes toward a first central opening portion between the main bridging portion and the belt winding portion in the central opening portion, and the resin belt is bent and clamped between the belt bending clamping convex portion and the main bridging portion and the belt winding portion.

Further, a base side step portion is formed on the winding portion rotating concave portion side of the band bending pinching convex portion,

a lever side step portion formed in the band winding portion facing the base side step portion of the band bending and pinching convex portion when the rotation lever is rotated to bring the locking portion into a locked state in which the locking portion is locked to the locked portion of the base portion,

when the locked state is achieved, the resin belt is bent and sandwiched between the base-side step portion and the rod-side step portion.

In the tape fastener of the present invention, the engaged portion is provided with the engaged hole having the engaged slant portion whose top surface is gradually inclined upward from the inside to the outside, and the engaging portion of the rotating lever is provided with the engaging slant portion which is gradually inclined upward from the inside to the outside to engage with the engaged slant portion of the engaged hole when the rotating lever is rotated to close the base portion.

Drawings

Fig. 1A and 1B are a plan view and a bottom view of a fastening tape (the pivot lever is in a wide open state) according to the embodiment of the present invention.

Fig. 2 is a sectional view taken along line a-a in fig. 1A.

Fig. 3A and 3B are a front view and a rear view of the fastening member with tape (the rotating lever is in a wide open state) according to the embodiment of the present invention, respectively.

Fig. 4 is an enlarged left side view of the fastening tape (the pivot lever is in a wide open state) according to the embodiment of the present invention.

Fig. 5 is an enlarged right side view of the fastening member with tape (the rotating lever is in a wide open state) according to the embodiment of the present invention.

Fig. 6A and 6B are a plan view and a bottom view of a rotating lever with a fastener according to an embodiment of the present invention.

Fig. 7A and 7B are a front view of a rotating lever constituting a fastening tool according to an embodiment of the present invention, and a sectional view taken along line B-B in fig. 6A.

Fig. 8A and 8B are left and right side views of a rotating lever with a fastener according to an embodiment of the present invention.

Fig. 9A and 9B are a plan view and a bottom view of the base portion with fastener according to the embodiment of the present invention.

Fig. 10A and 10B are a front view of a base portion with a fastener constituting the embodiment of the present invention, and a sectional view taken along line C-C in fig. 9A, respectively.

Fig. 11A and 11B are left and right side views of a rotating lever with a fastener according to an embodiment of the present invention.

Fig. 12A and 12B are a sectional view and a main-part enlarged sectional view showing a state where one end of the resin tape is inserted through an entrance of the tape insertion hole of the tape winding portion of the tape fastener (the rotating lever is in a wide open state) according to the embodiment of the present invention.

Fig. 13A and 13B are a sectional view and a main-part enlarged sectional view showing a state where one end of the resin tape is inserted through the tape insertion hole of the tape winding portion of the tape fastener (the rotating lever is in a wide open state) according to the embodiment of the present invention.

Fig. 14A and 14B are a cross-sectional view and a main-part enlarged cross-sectional view each showing a state in which one end of the resin tape is inserted through the tape insertion hole of the tape winding portion, the rotating lever is rotated in the closing direction, and the engagement end portion of the tape stretching portion of the rotating lever is caused to pass over the state switching projection portion to temporarily fix the resin tape.

Fig. 15A and 15B are a cross-sectional view and a main-part enlarged cross-sectional view showing a locked state in which one end of the resin tape is inserted through the tape insertion hole of the tape winding portion, the pivot lever is rotated in a closing direction, the locking portion at the tip end of the pivot lever is locked to the locked portion of the base portion, and the pivot lever is completely closed.

Fig. 16A and 16B are a front view showing a locked state in which one end of the resin tape is inserted through the tape insertion hole of the tape winding portion, the pivot lever is rotated in a closing direction, the locking portion at the distal end of the pivot lever is locked to the locked portion of the base portion, and the pivot lever is completely closed, and a cross-sectional view taken along line D-D in fig. 16A.

Fig. 17A and 17B are a front view showing a locked state in which the rotating lever of the tape winding portion is rotated in a closing direction, the locking portion at the distal end of the rotating lever is locked to the locked portion of the base portion, and the rotating lever is completely closed, and a cross-sectional view taken along line E-E in fig. 17A.

Fig. 18 is a cross-sectional view showing a state in which a locking projection (locking portion) of a conventional tape fastener is locked to a locking hole.

Description of the reference numerals:

1 with fastener

11 rotating rod

11a tape winding part

11a1 with through hole

11a2 first tape winding part

11a21 concave-convex strip part

11a21a raised strip

11a21b concave strip portion

11a22 tape outlet side end

11a23 belt entrance side end

11a24 rod side step

11a3 second tape winding

11a31 belt stretch

11a32 tape outlet side end

11a33 belt entrance side end

11a34 end for clamping

11b1, 11b2 turning shaft part

11c, 11c locking part

11c1, 11c1 inclined plane part for locking

11c2 and 11c2 slant surface parts for guide

11d tongue piece part

11e central opening part

11e1 first central opening part

11e2 second center opening part

11e3 third center opening part

11f1 main bridge

11f2 sub-bridge

11g bump

12 base part

12a1, 12a2 rotating shaft support

12a11, 12a21 bearing hole

12a12, 12a22 guide groove part

12b, 12b locking part

12b1, 12b1 locked holes

Inclined surface parts for locking 12b11 and 12b11

12b12, 12b12 horizontal plane portion

Inclined surface portion for guiding locking portion 12b2, 12b2

12c with locking hole

12d winding part rotating recess

12e convex part for clamping with bending

12e1 base side step part

12f state switching projection

12g leg

2 resin tape

2a resin member

2b core wire

3 telegraph pole (object)

Detailed Description

Embodiments of the band fastener of the present invention will be described below with reference to the drawings. The embodiments described below are merely examples of the present invention, and the present invention is not limited to the embodiments described below, and can be modified as appropriate within the scope of the technical idea of the present invention.

The belt fastener 1 of the present embodiment is made of synthetic resin or the like, and as shown in fig. 1A to 5, the belt fastener 1 is made up of a rotating lever 11 and a base portion 12, and as shown in fig. 12A to 16B, is used when fastening a resin belt 2 to an object such as a utility pole 3.

As shown in fig. 16B, the resin belt 2 is a belt in which a plurality of core wires 2B having substantially no extensibility and large tensile stress, such as aramid fibers, glass fibers, and wires (steel wires), are incorporated in a resin member 2a made of a soft synthetic resin such as polyvinyl chloride (PVC).

< construction of rotating lever 11 >

As shown in fig. 1A to 8B, the pivot lever 11 has a tape winding portion 11A and pivot shaft portions 11B1, 11B2 on the proximal end side, and locking

portions

11c, 11c and a tongue piece portion 11d on the distal end side, and is pivoted approximately 180 degrees from the wide open state shown in fig. 1A to 5 by pivoting about the pivot shaft portions 11B1, 11B2, thereby being brought into the locked (closed) state shown in fig. 15A, 16A, and the like.

The wide open state is a state in which the pivot lever 11 is maximally opened before and after 180 degrees relative to the base portion 12, and may be rotated only by a slight angle from the maximally opened state.

The tape winding portion 11a is provided with a tape insertion hole 11a1 through which one end of the resin tape 2 is inserted, and the lateral width and the longitudinal width of the tape insertion hole 11a1 are slightly larger than those of the cross section of the resin tape 2, ensuring a size in which the resin tape 2 can be smoothly inserted.

The upper side in the wide open state of the rotating lever 11, i.e., the upper side in fig. 6A to 8B, is referred to as a first tape winding portion 11a2, and the lower side in the wide open state of the rotating lever 11, i.e., the lower side in fig. 6A to 8B, is referred to as a second tape winding portion 11a 3. The first tape winding portion 11a2 and the second tape winding portion 11a3 are separated by a tape insertion hole 11a 1.

As shown in fig. 6A and 8A, the first tape winding portion 11a2 of the tape winding portion 11a is provided with a plurality of concave and convex stripe portions 11a21b and 11a21 in which the convex stripe portions 11a21a extend in parallel at predetermined intervals in the longitudinal direction of the resin tape 2.

Thus, when the pivot lever 11 is closed by the concave-convex stripe portion 11a21 of the first tape winding portion 11a2, the resin tape 2 is stretched by the tape stretching portion 11a31 and a large stretching force acts on the resin tape 2, and the resin tape 2 is pressed by the concave-convex stripe portion 11a 21.

Therefore, when the resin belt 2 is passed through the rotating lever 11 and becomes a locked (fully closed) state with respect to the base portion 12, the resin belt 2 is pressed by the concave-convex strip portion 11a21 and deformed into the concave-convex shape of the concave-convex strip portion 11a21, and therefore, the resin member 2a around the core wire 2b is more firmly sandwiched between the core wires 2b or joined to the core wires 2 b.

As a result, even if the resin belt 2 is strongly sandwiched between the raised strip 11a21a of the 11a21 of the rotating lever 11 and the winding portion rotating concave portion 12d of the base portion 12, the resin member 2a around the core wire 2b can be prevented from being torn and the resin member 2a can be prevented from being separated from the core wire 2b, and the number of times of performing the belt fastening operation again is reduced, and therefore, the operability can be improved.

As shown in fig. 7B and the like, the tape outlet side end portion 11a22 of the first tape winding portion 11a2 on which the concave-convex stripe portion 11a21 is formed at a smaller acute angle than the tape inlet side end portion 11a23 of the first tape winding portion 11a2, the tape outlet side end portion 11a32 of the second tape winding portion 11a3, and the tape inlet side end portion 11a 33.

As shown in fig. 7A and 7B, the tape inlet side end portion 11a23 of the first tape winding portion 11a2 protrudes toward the distal end portion of the rotating lever 11 from the tape inlet side end portion 11a33 of the second tape winding portion 11a 3.

Further, a tape stretching portion 11a31 is provided on the distal end portion side of the rotating lever 11 in the second tape winding portion 11a3, and when the rotating lever 11 is rotated from the open state to the locked state, the tape stretching portion 11a31 slides in contact with the resin tape 2, and moves the tape stretching portion toward the distal end portion side of the rotating lever 11 to stretch one end of the resin tape 2.

Here, as shown in fig. 6B and the like, the tape stretching portion 11a31 is formed in a curved shape in plan view so as to be closer to the distal end portion side of the pivot lever 11 from the center in the width direction (the short side direction of the pivot lever 11 or the pivot axis direction of the pivot shaft portions 11B1, 11B 2) toward both sides, that is, so as to be closer to the pivot axis side of the pivot shaft portions 11B1, 11B2 than to both sides. However, in the present invention, the belt stretching portion 11a31 need not be formed in a curved shape in a plan view, and the curved shape in a plan view may be any shape, or may be a straight shape in a plan view, and is not limited to the curved shape in a plan view, and may be formed in a V shape in a plan view, or the like.

As shown in fig. 6A to 8B, in the pivot shaft portions 11B1 and 11B2 of the pivot lever 11, the outer diameter r1 of the pivot shaft portion 11B1 is made smaller than the outer diameter r2 of the pivot shaft portion 11B2, and the right and left outer diameters are changed, whereby the pivot lever 11 can be reliably prevented from being mistakenly attached to the base portion 12 by the obverse and reverse surfaces of the pivot lever 11 being mistakenly shifted. Therefore, the inner diameters of the bearing holes 12a11 and 12a21 of the pivot supporting portions 12a1 and 12a2 of the base portion 12 into which the pivot shaft portions 11b1 and 11b2 of the pivot lever 11 are fitted are also changed in size in accordance with the outer diameters of the pivot shaft portions 11b1 and 11b 2.

The locking portions 11c and the tongue portion 11d are provided on the distal end portion side of the rotating lever 11.

The locking

portions

11c, 11c project laterally from the side surface of the distal end of the rotating lever 11 and are locked in the locked holes 12b1, 12b1 of the base portion 12.

As shown in fig. 17B, the locking

portions

11c and 11c are formed with locking inclined surfaces 11c1 and 11c1 and guiding inclined surfaces 11c2 and 11c2, respectively, the locking inclined surfaces 11c1 and 11c1 are inclined so as to be gradually upward from the inside to the outside when the rotating lever 11 is closed to the base portion 12, the locking inclined surfaces 12B11 and 12B11 locked in the locked holes 12B1 and 12B1 of the base portion 12, and the guiding inclined surfaces 11c2 and 11c2 are inclined with respect to the locking inclined surfaces 11c1 and 11c1 so that the locking

portions

11c and 11c are easily locked in the locked holes 12B1 and 12B 1.

Therefore, when the rotating lever 11 is closed to the locked (fully closed) state, the locking inclined surfaces 11c1 and 11c1 of the locking

portions

11c and 11c make the locking

portions

11c and 11c easily locked in the locked holes 12b1 and 12b1 of the base portion 12, while after the rotating lever 11 is closed to the locked (fully closed) state, the locking inclined surfaces 11c1 and 11c1 of the locking

portions

11c and 11c which are gradually inclined upward are locked in the locked inclined surfaces 12b11 and 12b11 of the locked

portions

12b and 12b of the base portion 12, respectively, so that the locked state can be reliably maintained. That is, the locking

portions

11c and 11c are configured to have a shape that is easy to close and difficult to detach. The locking

portions

11c, 11c and the locked hole 12b1 may have any shape.

As shown in fig. 7A and 7B, the tongue portion 11d of the pivot lever 11 protrudes upward from the upper surface of the pivot lever 11 main body. Thus, when the one end of the resin tape 2 reaches the tongue piece portion 11d from the tape winding portion 11a of the rotating lever 11, the tongue piece portion 11d presses the one end of the resin tape 2 from above and is disposed along the utility pole 3 or the like, and the resin tape 2 can be prevented from being lifted from the utility pole 3 or the like. In particular, since the tongue portion 11d is formed to be curved as shown in fig. 3B and 4, one end of the resin band 2 can be smoothly curved downward so as to follow the outer peripheral surface of the utility pole 3.

When the pivot lever 11 in the locked state is released, a driver (not shown) with a sharp tip or the like is inserted into the tongue portion 11d, and the pivot lever 11 can be lifted. In the present invention, the tongue portion 11d may be provided at the distal end portion of the rotating lever 11, and may be omitted.

In order to reduce the weight of the rotating lever 11 and to reduce the cost of raw materials, a central opening 11e having a large opening is formed between the distal end portion of the rotating lever 11 and the tape winding portion 11a, and the central opening 11e is divided into three openings, i.e., a first central opening 11e1, a second central opening 11e2, and a third central opening 11e3, so that the central opening 11e is separated by a predetermined interval, and two bridge portions, i.e., a main bridge portion 11f1 and a sub bridge portion 11f2, are connected to both left and right side surfaces.

As will be described later, the main bridge portion 11f1 projects toward the first central opening portion 11e1 between the band bending pinching convex portion provided on the band exit side of the winding portion turning concave portion 12d in the base portion 12 and the band winding portion 11a, and the resin band 2 is pinched by bending between the band bending pinching convex portion and the main bridge portion 11f1 and the band winding portion 11 a.

This enables the resin tape 2 to be more reliably fastened than in the case where the main bridge portion 11f1 is not provided, and thus, operability can be improved.

As shown in fig. 2, 4, 5, 6A, 6B, and the like, a raised portion 11g is provided at the distal end of the rotating lever 11, the center of the upper surface of which is raised more than at both sides.

Thus, compared to the case where the raised portion 11g is not provided, the distal end portion of the rotating lever 11 can be pressed more strongly, and the locking

portions

11c, 11c on the distal end portion side of the rotating lever 11 can be locked in the locked holes 12b1, 12b1 on the distal end side of the base portion 12, so that the resin tape 2 can be fastened more reliably, and operability can be improved.

< construction of base part 12 >

As shown in fig. 9A to 11B, the base portion 12 includes: a rotating shaft support portion 12a1, 12a2 that rotatably supports the rotating shaft portion 11b1, 11b2 of the rotating lever 11; locked

portions

12b and 12b for locking the locking

portions

11c and 11c of the rotating lever 11; a belt locking hole 12c for locking the other end of the resin belt 2; a winding portion rotating recess 12 d; a bending holding projection 12 e; the state switching projection 12 f.

The rotary shaft support portions 12a1, 12a2 are erected from both rear sides of the base portion 12 on the rear side walls, and are provided with bearing holes 12a11, 12a21 into which rotary shaft portions 11b1, 11b2 projecting from both sides of the rotary shaft 11 are rotatably fitted, respectively, and guide groove portions 12a12, 12a22 that guide the rotary shaft portions 11b1, 11b2 to the bearing holes 12a11, 12a21, respectively.

As described above, in order to prevent the front and back surfaces of the pivot lever 11 from being mistakenly attached to the base portion 12, the dimensions of the outer diameters of the pivot shaft portions 11b1, 11b2 of the pivot lever 11 are changed, and therefore, the inner diameters of the bearing holes 12a11, 12a21 of the pivot shaft supporting portions 12a1, 12a2 of the base portion 12 and the groove widths of the guide groove portions 12a12, 12a22 are also changed in size in accordance with the outer diameters of the pivot shaft portions 11b1, 11b 2.

The engaged portions 12B, 12B are erected from both sides of the front of the base portion 12 on the front side wall, and as shown in fig. 17A, 17B, and the like, engaged holes 12B1, 12B1 and engaging portion guiding inclined surfaces 12B2, 12B2 are provided in the front side wall, and the engaged holes 12B1, 12B1 have the same cross-sectional shape as the cross-sectional shape of the engaging

portions

11c, 11c of the rotating lever 11 and are engaged with the engaging

portions

11c, 11 c; the locking part guide inclined surfaces 12b2 and 12b2 are inclined so as to guide the locking

parts

11c and 11c of the rotating lever 11 to the locked holes 12b1 and 12b 1.

As shown in fig. 17B, the engaged holes 12B1 and 12B1 have engaged slant surfaces 12B11 and 12B11 and horizontal plane surfaces 12B12 and 12B12 that are substantially horizontal and not inclined, respectively, and the inclined angles of the engaging slant surfaces 11c1 and 11c1 of the engaging

portions

11c and 11c match.

The tape locking hole 12c is a hole for fixing the other end of the resin tape 2, and the lateral width and the longitudinal width are slightly larger than those of the cross section of the resin tape 2, thereby ensuring a dimension in which the resin tape 2 can be smoothly inserted.

The winding portion turning concave portion 12d is formed with a gap between the winding portion 11a around which the resin tape 2 is wound in order to allow turning of the tape winding portion 11a around which the resin tape 2 is wound, and the winding portion turning concave portion 12d is formed in a substantially curved cross-sectional shape in accordance with a cross-sectional shape of the tape winding portion 11a, a thickness of the resin tape 2, and the like so as to be able to turn the tape winding portion 11a around which the resin tape 2 is wound from a wide open state to a locked (closed) state.

The tape bending clamping convex portion 12e is a convex portion provided on the tape outlet side of the winding portion rotating concave portion 12d, and as shown in fig. 15A and 15B described later, when the rotating lever 11 is closed and becomes a locked (closed) state, the tape bending clamping convex portion 12e protrudes toward the first central opening portion 11e1 between the main bridge portion 11f1 and the tape winding portion 11a in the central opening portion 11e of the rotating lever 11, and bends and clamps the resin tape 2 between the main bridge portion 11f1 and the tape winding portion 11 a.

Here, a base side step portion 12e1 is formed on the tape entrance side surface of the tape bending pinching convex portion 12e, that is, on the tape exit side of the winding portion turning concave portion 12d, and the resin tape 2 is pinched between the base side step portion 12e1 and a step portion provided on the first tape winding portion 11a2 side where the concave-convex strip portion 11a21 is provided in the tape winding portion 11 a.

The state switching convex portion 12f is a convex portion provided at the rear end portion of the base portion 12 so as to face the tape bending clamping convex portion 12e, and is a portion for switching the wide open state of the rotating lever 11, the temporary locking state for temporarily locking the resin tape 2, and the like by engaging the engaging end portion 11a34 separated from the tape insertion hole 11a1 in the tape stretching portion 11a31 of the tape winding portion 11a of the rotating lever 11 when the rotating lever 11 attached to the base portion 12 is rotated.

That is, when the state switching projecting portion 12f is located on the belt stretching portion 11a31 side with the engagement end portion 11a34 of the pivot lever 11 as a boundary portion, the side surface on the belt inlet side holds the wide open state in which the pivot lever 11 is widely opened with respect to the base portion 12.

On the other hand, when the state switching projection portion 12f is rotated from the wide open state in which it is positioned on the side of the belt stretching portion 11a31 of the pivot lever 11 in the direction of closing the pivot lever 11 and the engagement end portion 11a34 of the pivot lever 11 moves to the opposite side of the belt stretching portion 11a31 beyond the state switching projection portion 12f, a temporarily fixed state is achieved in which the resin belt 2 is temporarily fixed by sandwiching the resin belt 2 between the end portion 11a22 on the belt exit side in the first belt winding portion 11a2 of the pivot lever 11 and the belt bending clamping projection portion 12e of the base portion 12.

< method of Using fastener with Belt 1 >

Next, a method of using the band fastener 1 will be described with reference to fig. 12A to 17B

First, as shown in fig. 12A and 12B, in a state where the belt fastener 1, which has the other end of the resin belt 2 locked to the base part 12, is in contact with the side surface of the utility pole 3, one end of the resin belt 2 is wound around along the circumferential surface of the utility pole 3, and then one end of the resin belt 2 is inserted from the belt inlet side of the belt insertion hole 11a1 of the belt winding part 11a of the rotating lever 11 in the wide open state to the surface of the base part 12.

At this time, as shown in fig. 12A and 12B, since the tape inlet side end portion 11a23 of the first tape winding portion 11a2 protrudes toward the tip end portion side of the rotating lever 11 more than the tape stretching portion 11a31 of the second tape winding portion 11a3, when the tip end portion of the resin tape 2 abuts against the curved surface of the tape stretching portion 11a31, the tip end portion of the resin tape 2 abuts against the inlet inner surface of the tape inlet side end portion 11a23 of the first tape winding portion 11a2, that is, the inner surface of the tape inlet side 11a11 in the tape insertion hole 11a1, and therefore, the tip end portion of the resin tape 2 can be reliably and quickly guided to the tape insertion hole 11a1, and the operability of the tape insertion operation can be improved.

Next, as shown in fig. 13A and 13B, after one end of the resin tape 2 is inserted into the tape insertion hole 11a1 of the tape winding portion 11a of the rotating lever 11 and the tip end portion is protruded by a predetermined length, the rotating lever 11 is rotated in the arrow α direction from the wide open state shown in fig. 13A.

In the wide open state of the rotating lever 11 in which one end of the resin tape 2 is inserted through the tape insertion hole 11a1 of the tape winding portion 11a of the rotating lever 11, as shown in fig. 12A to 13B, the state switching projecting portion 12f at the rear end of the base portion 12 is engaged with the engaging end portion 11a34 of the rotating lever 11 and positioned on the tape stretching portion 11a31 side, and the wide open state of the rotating lever 11 is maintained.

Therefore, in the belt fastener of the present embodiment, since the rotation lever 11 and the base portion 12 are stabilized in the wide open state in which the rotation lever 11 is widely opened with respect to the base portion 12, the operability of the belt inserting operation can be improved also from this point.

As a result, when the rotating lever 11 is opened widely with respect to the base portion 12 and the resin tape 12 is inserted through the tape insertion hole 11a1, the passing state switching convex portion 12f and the tape stretching portion 11a31 of the tape winding portion 11a of the rotating lever 11 are kept opened widely, and therefore, the tape insertion operation by the operator is facilitated.

Next, as shown in fig. 14A and 14B, when the pivot lever 11 is pivoted about 60 degrees from the wide open state, from the wide open state in which the state switching convex portion 12f is positioned on the belt stretching portion 11a31 side of the pivot lever 11, the engagement end portion 11a34 of the pivot lever 11 presses the state switching convex portion 12f and bends the state switching convex portion 12f, thereby moving to the opposite side of the belt stretching portion 11a31 beyond the state switching convex portion 12 f.

Then, as shown in fig. 14A and 14B, the resin tape 2 is sandwiched between the tape outlet side end portion 11a22 of the first tape winding portion 11a2 of the rotating lever 11 and the tape bending sandwiching convex portion 12e of the base portion 12, and the resin tape 2 is temporarily fixed in a temporarily fixed state.

In the temporarily fixed state of the resin tape 2, the engagement end portion 11a34 of the pivot lever 11 passes over the state switching projection 12f, and therefore, even if the tensile force of the resin tape 2 is applied in the return direction, which is the direction of opening the pivot lever 11, the pivot lever 11 does not open unless the tensile force of a predetermined value or more is applied.

As a result, compared to the conventional art which does not have the function of temporarily fixing the resin belt 2, since the belt fastener 1 of the present embodiment has the temporary fixing function of temporarily fixing the resin belt 2 and preventing the return of the rotating lever 11, the height of the resin belt 2 can be changed by releasing the hand from the rotating lever 11 in the temporarily fixed state of the resin belt 2, and even the rotating lever 11 can be opened again to fasten the resin belt 2 again, and the operability can be improved.

Next, when the rotating lever 11 is further rotated from the temporarily fixed state of the resin tape 2 and the rotating lever 11 shown in fig. 14A and 14B, the resin tape 2 is stretched while being wound by the tape stretching portion 11a31 of the second tape winding portion 11a3, and the stretching force gradually increases.

Here, the belt stretching portion 11a31 is formed in a curved shape in which the central portion in the width direction is recessed toward the rotation center side of the turning shaft portions 11b1 and 11b2 than both sides thereof, and therefore, the central portion in the width direction of the resin belt 2 is wound around the belt winding portion 11a at a shorter radius than both sides thereof. Therefore, although strong tensile forces are applied to both sides in the width direction of the resin tape 2 stretched by sliding contact with the tape stretching portions 11a31, the tensile forces are not applied to the center portion in the width direction of the resin tape 2, and therefore, even in a tape having substantially no stretchability, the tape fastener 1 can be wound and fixed around an object such as the utility pole 3 without increasing the size of the entire tape fastener 1 and without requiring an excessive force.

Next, when the rotating lever 11 is further rotated from the temporarily fixed state shown in fig. 14A and 14B, and the locking

portions

11c and 11c at the distal end portion of the rotating lever 11 are locked (closed) in the locked hole 12B1 of the base portion 12 as shown in fig. 15A and 15B while the tensile force of the resin band 2 is increased, the rotating lever 11 is locked (closed) in the base portion 12.

As shown in fig. 15A and 15B, in the locked (closed) state, the amount of winding of the resin tape 2 around the tape winding portion 11a is maximized, and the tape stretching portion 11a31 stretching the resin tape 2 is moved from the rear end side to the tip end side of the base portion 12, so that the stretching force applied to the resin tape 2 is maximized, and the resin tape 2 can be reliably fastened to the utility pole 3.

< effects of the fastener 1 of the embodiment >

As described above, in the tape fastener 1 of the present embodiment, the locked holes 12b1 and 12b1 are provided in the locked

portions

12b and 12b of the base portion 12, respectively, and the locked holes 12b1 and 12b1 have the locked slant portions 12b11 and 12b11 whose top surfaces are gradually inclined upward from the inside to the outside, while the locking slant portions 11c1 and 11c1 are provided in the locking

portions

11c and 11c at the tip end of the rotating lever 11, respectively, so that the locking slant portions 11c1 and 11c1 are gradually inclined upward from the inside to the outside to be locked with the locked slant portions 12b11 and 12b11 of the locked

portions

12b and 12b of the base portion 12 when the rotating lever 11 is rotated and closed to the base portion 12, respectively, and therefore, the closed rotating lever 11 can be made difficult to be detached from the base portion 12, and the resin tape 2 can be reliably fastened.

Further, in the belt fastener 1 of the present embodiment, since the raised portion 11g whose upper surface is raised more at the center than at both sides is provided at the distal end portion of the rotating lever 11, the distal end portion of the rotating lever 11 can be pressed more strongly than in the case where the raised portion 11g is not provided, and the locking

portions

11c and 11c on the distal end portion side of the rotating lever 11 can be locked to the locked holes 12b1 and 12b1 on the distal end side of the base portion 12, and therefore, the resin belt 2 can be fastened more reliably, and operability can be improved.

In the tape fastener 1 of the present embodiment, the sizes of the outer diameters r1 and r2 of the left and right pivot shaft portions 11b1 and 11b2 are changed in the pivot shaft portions 11b1 and 11b2 of the pivot lever 11, while the left and right pivot shaft supporting portions 12a1 and 12a2 of the base portion 12 have the bearing holes 12a11 and 12a21 that support the left and right pivot shaft portions 11b1 and 11b2 of the pivot lever 11, respectively, and the left and right bearing holes 12a11 and 12a21 have inner diameters corresponding to the sizes of the outer diameters r1 and r2 of the left and right pivot shaft portions 11b1 and 11b2 of the pivot lever 11, respectively, so that the pivot lever 11 can be reliably attached to the base portion 12 while preventing the obverse and reverse surfaces of the pivot lever 11 from being mistakenly.

Further, in the belt fastener 1 of the embodiment, the state switching projecting portion 12f is provided at the rear end portion of the base portion 12, and when the rotating lever 11 attached to the base portion 12 is rotated, the state switching projecting portion 12f is engaged with the engaging end portion 11a34 of the second belt winding portion 11a3, and when the state switching projecting portion 12f is positioned on the belt stretching portion 11a31 side, the wide open state in which the rotating lever 11 is widely opened with respect to the base portion 12 is maintained, and when the rotating lever 11 is rotated in the closing direction from the wide open state and the engaging end portion 11a34 goes over the state switching projecting portion 12f, the resin belt 2 is temporarily fixed by sandwiching the resin belt 2 between the belt outlet side end portion 11a22 of the first belt winding portion 11a2 and the belt bending clamping projecting portion 12e of the base portion 12.

Therefore, compared to the conventional technique which does not have a function of temporarily fixing the resin belt 2, in the temporarily fixed state of the resin belt 2, the height of the resin belt 2 can be changed by releasing the hand from the rotating lever 11, and even the rotating lever 11 can be opened again to fasten the resin belt 2 again, so that the operability can be improved.

Further, as shown in fig. 15A and 15B, when the rotating lever 11 around which the resin tape 2 is wound is rotated to a locked state in which the

locking portions

11c, 11c on the tip end side of the rotating lever 11 are locked to the locked portions 12B, 12B of the base portion 12, respectively, the resin tape 2 is sandwiched between the state switching projecting portion 12f and the tape outlet side end portion 11a22 of the tape insertion hole 11a1 in the tape winding portion 11a, and therefore, the resin tape 2 can be more reliably fastened.

As shown in fig. 13A and 13B, in the tape fastener 1 of the embodiment, the tape outlet side end portion 11a22 of the first tape winding portion 11a2 in which the uneven stripe portion 11a21 is formed at a smaller acute angle than the tape inlet side end portion 11a23 of the first tape winding portion 11a2, the tape outlet side end portion 11a32 of the second tape winding portion 11a3, and the tape inlet side end portion 11a 33.

Therefore, even if only one end of the resin tape 2 is inserted into the tape insertion hole 11a1 of the tape winding portion 11a and rotated, the resin tape 2 is bent at a large acute angle at the tape outlet side end portion 11a22 of the first tape winding portion 11a2 and wound around the tape winding portion 11a, and therefore, only by inserting the resin tape 2 into the tape insertion hole 11a1 and rotating the rotating lever 11 in the direction of locking the rotating lever 11, the resin tape 2 can be reliably fastened, and operability can be improved.

In the tape fastener 1 of the embodiment, the base portion 12 is provided with the winding portion rotating concave portion 12d, the winding portion rotating concave portion 12d is formed as a concave so as to allow the tape winding portion 11a around which the resin tape 2 is wound to rotate, a gap is formed between the winding portion rotating concave portion 12d and the tape winding portion 11a, on the other hand, the rotating lever 11 is formed with the central opening portion 11e between the tip end portion of the rotating lever 11 and the tape winding portion 11a on the rear end portion side of the rotating lever 11, and the central opening portion 11e is formed with the main bridging portions 11f1 connected to both left and right side surfaces, the base portion 12 is provided with the tape bending clamping convex portion 12e on the tape outlet side of the winding portion rotating concave portion 12d, the tape bending clamping convex portion 12e is projected to the first central opening portion 11e1 between the main bridging portion 11f1 and the tape winding portion 11a in the central opening portion 11e, and the resin tape 2 is bent and clamped between the tape bending and clamping convex portion 12e, the main bridging portion 11f1 and the tape winding portion 11 a.

Therefore, when the rotating lever 11 is closed and the locked (closed) state is achieved, the resin tape 2 is bent and clamped between the bent clamping convex portion 12e, the main bridging portion 11f1, and the tape winding portion 11a, and therefore the resin tape 2 can be more reliably fastened, and operability can be further improved.

In the tape fastener 1 of the embodiment, the base-side stepped portion 12e1 is provided on the tape entrance side surface of the tape bending pinching convex portion 12e, and when the pivot lever 11 is closed and the locked (closed) state is achieved, the lever-side stepped portion 11a24 is formed in the first tape winding portion 11a2 opposed to the base-side stepped portion 12e1 of the tape bending pinching convex portion 12 e.

Therefore, even when the rotating lever 11 is closed and the locked (closed) state is achieved, the resin tape 2 is further bent and clamped between the base-side stepped portion 12e1 of the bent clamping convex portion 12e and the lever-side stepped portion 11a24 of the first tape winding portion 11a2, and therefore the resin tape 2 can be more reliably fastened, and operability can be further improved from this point.

In the above description of the embodiment, the tongue portion 11d is provided on the distal end portion side of the pivot lever 11, but the present invention is not limited to this, and the tongue portion 11d may be omitted.

Claims

1. A tape fastener having a rotating lever that rotates while stretching a resin tape having a plurality of core wires built therein in a resin member, and a base portion that rotates and locks the rotating lever, the tape fastener fastening and attaching the resin tape to an object,

the belt winding part is provided with:

the base part is provided with:

a belt locking part for locking the other end of the resin belt,

a locked portion for locking the locking portion of the rotating lever,

a state switching projection portion is provided at a rear end portion of the base portion, and the state switching projection portion is engaged with an engaging end portion of the tape stretching portion of the tape winding portion, the engaging end portion being separated from the tape insertion hole, when the rotating lever attached to the base portion is rotated,

2. The strap fastener of claim 1 wherein,

when the rotating lever around which the resin tape is wound is rotated to be in a locked state in which the locking portion is locked to the locked portion of the base portion, the resin tape is sandwiched between the state switching projection and an end portion of the tape winding portion on the tape outlet side of the tape insertion hole, that is, an end portion on the opposite side from the side on which the tape stretching portion is formed.

3. The strap fastener of claim 1 wherein,

the base portion is further provided with a winding portion rotating recessed portion which is formed as a recess so as to allow the tape winding portion around which the resin tape is wound to rotate, and a gap is formed between the winding portion rotating recessed portion and the tape winding portion,

the base portion has a concave portion for turning the winding portion, the concave portion for turning the winding portion has a convex portion for bending the tape, the convex portion for bending the tape protrudes toward a first central opening portion between the main bridging portion and the winding portion in the central opening portion, and the resin tape is bent and clamped between the convex portion for bending the tape and the main bridging portion and the winding portion.

4. The strap fastener of claim 2 wherein,

5. The strip fastener of any one of claims 3 to 4,

a base side step portion is formed on the winding portion rotating concave portion side of the band bending holding convex portion,

6. The strap fastener of any one of claims 1 to 4,

7. The strap fastener of any one of claims 1 to 4,

a raised part with a center raised more than two sides is arranged at the top end part of the rotating rod.

8. The strap fastener of any one of claims 1 to 4,

in the rotating shaft portion of the rotating shaft, the size of the outer diameter of the left and right rotating shaft portions is changed,

9. The strap fastener of any one of claims 1 to 4,

the end portion of the tape winding portion on the tape outlet side of the tape insertion hole, that is, the end portion on the opposite side to the side on which the tape stretching portion is formed, is formed at an acute angle smaller than the end portion on the tape outlet side of the tape insertion hole, that is, the end portion on the side on which the tape stretching portion is formed, and the upper and lower end portions of the tape insertion hole on the tape inlet side.