JP2019023490A - Band fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a band fastener capable of restricting free rotation of a winding shaft for winding a band and improving reliability of binding ability. A band fastener 100 includes a fastener main body 101 and a take-up shaft 110. The fastener main body 101 is formed with the side walls 105 and 106 standing upright from both sides of the base portion 102. On the side walls 105 and 106, an engaging portion 108 and a reinforcing portion 109 are formed by plastic working around the shaft through hole 107 through which the take-up shaft 110 penetrates. The take-up shaft 110 includes a head portion 112 at one end of the body portion 111 that winds up the belt B, and a bent piece 115 at the other end. The head portion 112 includes an abutting portion 113 that receives pressing force from the side wall 105 by extending toward the side wall 105 and abutting the head portion 112. [Selection diagram] Fig. 1

Description

  The present invention relates to a band fastener used when fastening a band extending in a band shape to a utility pole, piping or duct.

  Conventionally, a band fastening tool has been used as a tool for fastening a band extending in a band shape to an object to be bound such as a utility pole, piping or duct. For example, the following Patent Document 1 discloses a band tightening device in which a winding shaft that winds a band around a bearing portion of a rectangular seat plate having a substantially U-shaped cross section is formed through a claw wheel. Yes. In this case, in this band tightener, the rotation of the winding shaft is restricted by the hook wheel being caught by the projection formed on the bearing portion of the rectangular seat plate.

Japanese Utility Model Publication No. 50-142196

  However, in such a band clamp described in the above-mentioned Patent Document 1, the claw portion that is hooked on the protrusion of the claw wheel is formed to extend in a gear shape along the circumferential direction of the winding shaft, and the entire claw wheel is thus formed. However, since the flatness of the claw gear is low and warping and bending occur, the hook between the claw portion and the projection is loosened and the reliability of the binding ability is lowered.

  The present invention has been made to address the above problems, and an object of the present invention is to provide a band fastener that can restrict the free rotation of the winding shaft that winds the band to improve the reliability of the binding capability. There is to do.

  In order to achieve the above-mentioned object, the present invention is characterized in that a fastener body in which two side walls facing each other are formed upright on both sides of a plate-like base portion, and a body disposed between the two side walls. Part, a head part and a bent piece that are arranged in a flange-like manner on the outside of the two side walls, respectively, and penetrated in a rotatable state with respect to the two side walls, and a band is wound around the body part A band fastener having a take-up shaft to be taken, wherein the two side walls press the head portion and the bent piece outward, respectively, and around the portion where the take-up shaft passes through the side wall facing the head portion A plurality of convex or concave engaging portions are formed along the circumferential direction of the winding shaft, and the head portion protrudes toward the side wall and abuts against the side wall to receive a pressing force from the side wall. It has a plate-like butting piece Located in.

  According to the feature of the present invention configured as described above, the band fastener is configured such that the abutting piece extending in a plate shape from the head portion of the take-up shaft toward the side wall of the fastener body hits the side wall and presses the pressing force. Therefore, the adhesion between the side wall and the abutting piece is improved. Thereby, the band fastener according to the present invention can restrict the free rotation of the winding shaft that winds the band, and can improve the reliability of the binding capability.

  According to another aspect of the present invention, in the band fastener, the engaging portion is formed in a state in which a part of the side wall is plastically deformed and work-hardened. That is, the periphery of the portion through which the take-up shaft penetrates is formed by a reinforcing portion that is plastically deformed into a ring shape and is work-hardened.

  According to another feature of the present invention configured as described above, the band fastener is formed in a state in which the engagement portion is formed and hardened by plastic deformation of a part of the side wall, and faces the bent piece. The periphery of the portion of the side wall through which the take-up shaft passes is formed with a work-hardened reinforcement by plastic deformation in a ring shape, and the portion of the side wall through which the take-up shaft passes is work hardened. Since the rigidity is enhanced by the above, the deformation of the both side walls at the time of winding the belt can be suppressed and the reliability of the binding ability can be improved.

  Another feature of the present invention is that in the band fastener, one abutment piece is provided at a position opposite to each other across the rotation axis of the winding shaft with respect to the head. There is.

  According to another feature of the present invention configured as described above, the band fastener is provided with one abutting piece with respect to the head or at positions opposite to each other across the rotation axis of the winding shaft. Therefore, when one or two abutting pieces receive a pressing force from the side wall, the adhesion between the side wall and the abutting piece is improved. Thereby, the band fastener according to the present invention can restrict the free rotation of the winding shaft that winds the band, and can improve the reliability of the binding capability.

  Another feature of the present invention is that, in the band fastener, the abutting piece is bent toward the winding direction of the band on the winding shaft at the tip portion that abuts against the side wall.

  According to another feature of the present invention configured as described above, the band fastener is formed such that a tip portion that abuts against the side wall of the abutting piece is bent toward the winding direction of the band on the winding shaft. The winding shaft can be easily rotated in the direction opposite to the winding direction of the band, that is, the direction in which the winding of the band is released, and the wound band can be loosened.

  Another feature of the present invention is that in the band fastener, the body of the fastener is cut in a state in which a central portion between the two side walls remains in a portion where the two side walls stand up with respect to the base portion. Each of the cutouts has a cutout portion that is cut out, and the two cutout portions are formed to have a length equal to or greater than the diameter of the engagement portion at a position overlapping the engagement portion.

  According to another aspect of the present invention configured as described above, the band fastener includes a portion in which an engaging portion of one of the two side walls to be deformed outward is formed and the other side wall. Since the portions facing the engaging portion in the above are deformed in parallel with each other, the winding shaft can be smoothly rotated and the operability of the winding shaft can be improved.

It is a perspective view which shows the outline of the external appearance structure of the band fastener which concerns on one Embodiment of this invention. It is a rear view which shows the outline of an external appearance structure of the band clamp shown in FIG. It is sectional drawing for demonstrating the operating state of the band clamp shown in FIG. It is a side view which shows the outline of the external appearance structure of the fastening tool main body in the band fastening tool shown in FIG. It is a top view which shows the expansion | deployment state of the winding shaft in the band fastener shown in FIG.

  Hereinafter, an embodiment of a band fastener according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an outline of an external configuration of a band fastener 100 according to the present invention. FIG. 2 is a rear view showing an outline of the external configuration of the band fastener 100 shown in FIG. FIG. 3 is a cross-sectional view for explaining the operating state of the band fastener 100 shown in FIG. In addition, since each figure referred in this specification may represent typically some components, such as exaggerating in order to make an understanding of this invention easy, the dimension between each component is shown. And ratios may vary. The band fastening tool 100 is a tool for fastening a band B extending in a band shape to an object to be bound WK such as a utility pole, piping, or duct.

  The band fastener 100 is mainly composed of a fastener body 101 and a winding shaft 110. The fastening tool main body 101 is a part that supports the winding shaft 110 and is attached to the object to be bound WK, and is mainly configured by the base portion 102 and the two side walls 105 and 106. In this case, in the fastener main body 101, the base portion 102 and the side walls 105 and 106 are integrally formed by pressing one metal plate.

  The base portion 102 supports the two side walls 105 and 106 and is a portion around which one end of the band B is wound, and is formed in a flat plate shape extending in a rectangular shape in plan view. The base portion 102 is formed with a banding portion 103 and a notch portion 104, respectively.

  The band hanging portion 103 is a portion that is wound around one end portion of the band B, and is formed on one end portion side of both end portions of the base portion 102. More specifically, the banding portion 103 includes a through hole extending in parallel with each other in the width direction of the base portion 102 and a single plate-like portion formed between the two through holes in the width direction. Has been.

  The cutout portion 104 is a portion for suppressing the bending deformation of the portions of the side walls 105 and 106 that support the winding shaft 110 to facilitate the rotation operation of the winding shaft 110, and the side walls 105 and 106 in the base portion 102. Are formed in a through-hole shape in which a part of each standing part is cut out. More specifically, the notch 104 has a length equal to or greater than the diameter of the engagement portion 108 at a position on the base portion 102 that overlaps with a formation position of an engagement portion 108 described later formed on the side wall 105 in a plan view. Is formed. Further, each notch 104 formed on each of the side walls 105 and 106 is formed with a width that leaves the central portion of the side wall 105 and the side wall 106 in the base portion 102 as a bridge portion 104a. In this case, the bridge portion 104 a may be formed thicker than the width of each notch portion 104.

  The side walls 105 and 106 are portions for supporting the take-up shaft 110 and are respectively formed in a state of standing from the respective side edge portions extending in the longitudinal direction of the base portion 102. In this case, the side walls 105 and 106 are formed in a mountain shape in a side view in which a portion that supports the take-up shaft 110 extends most. Moreover, these side walls 105 and 106 are formed in the shape opened so that the space | interval of the side wall 105 and the side wall 106 may become far toward the front-end | tip part side. The side walls 105 and 106 are respectively formed with shaft through holes 107, engaging portions 108, and reinforcing portions 109.

  The shaft through-hole 107 is a part for supporting the winding shaft 110 in a state of passing therethrough, and is configured by circular through-holes formed concentrically on the side walls 105 and 106, respectively. As shown in FIG. 4, the engaging portion 108 is a portion for restricting the rotation of the winding shaft 110, and is formed in a ring shape around the shaft through hole 107 on the outer surface of the side wall 105.

  More specifically, the engaging portion 108 is configured such that a plurality of protrusions that protrude outward from the outer surface of the side wall 105 are arranged around the shaft hole 107 in a ring shape. Each of the protrusions constituting the engaging portion 108 has a rising surface portion 108a that rises substantially perpendicular to the side wall 105 on the front side in the winding rotation direction of the band B by the winding shaft 110, and a winding rotation direction from the rising surface portion 108a. And a slant portion 108b having a spherical downward slope on the rear side thereof, and is formed in a substantially triangular shape in a side view of the fastener body 101. The engaging portion 108 is formed by plastic working (pressing) the side wall 105. In FIG. 4, the winding shaft 110 is indicated by a two-dot chain line.

  The reinforcing portion 109 is a portion for reinforcing the periphery of the shaft through hole 107 in the side wall 106, and the periphery of the side wall 106 is formed in a ring shape toward the outside. The reinforcing portion 109 is formed in a state in which the side wall 106 is processed and hardened by plastic processing (press processing). Further, the reinforcing portion 109 is formed on the inner side of the distal end portion of the bent piece 115 described later.

  The take-up shaft 110 is a part for taking up the band B, and is mainly composed of a body part 111, a head part 112, and a bent piece 115. In this case, the winding shaft 110 has a body 111, a head 112, and a bent piece 115 integrally formed by pressing one metal plate.

  The body portion 111 is a portion that is disposed between the side wall 105 and the side wall 106 and winds up the band B, and is configured by rounding two metal plates facing each other to form a cylindrical shape as a whole. The trunk portion 111 is formed with a band through hole 111a extending along the axial direction in a state of penetrating in the radial direction. The band through hole 111a is a part for inserting the other end of the band B opposite to the one end. In the body 111, a head portion 112 is formed on one end side, and a bent piece 115 is formed on the other end side. Note that the direction of rotation of the body 111 toward the side where the band B is wound is referred to as “forward rotation”, and the direction of rotation in which the winding state of the band B is released in reverse to the normal rotation is referred to as “reverse rotation”. Sometimes.

  The head portion 112 is a portion for the user to rotate the winding shaft 110, and the cross-sectional shape extending in a direction orthogonal to the axial direction of the body portion 111 is formed in a cylindrical shape. In this case, the head portion 112 is formed in a size that can be manually operated at a position facing the outer surface of the side wall 105. Abutting piece 113 is formed on the head portion 112 at a position facing the engaging portion 108, and an operation mark 114 indicating the rotation direction of the winding shaft 110 when the band B is tightened is formed on the outer surface. Has been.

  The abutting piece 113 is a portion for restricting the rotation of the take-up shaft 110 by being caught by the engaging portion 108, and a plate-like shape in which a part of the head portion 112 extends toward the side wall 105 and abuts against the side wall 105. Is formed. In this case, the abutting piece 113 is formed in a direction in line contact or surface contact with the standing surface portion 108a. In this embodiment, the abutting pieces 113 are formed at positions opposite to each other across the rotation axis of the winding shaft 110. Further, these abutting pieces 113 are formed to be bent so that the tip end side is inclined forward in the rotational direction of the winding shaft 110. In this case, the inclination angle θ on the tip end side of the abutting piece 113 is 1 ° to 5 °, preferably 3 to 5 ° with respect to the surface perpendicular to the side wall 105.

  The bending piece 115 is a part for attaching the winding shaft 110 to the side walls 105 and 106 in cooperation with the abutting piece 113 and is formed on the outer surface of the side wall 106. The bent piece 115 is configured by bending the respective distal end portions of two metal plates constituting the body portion 111 outward in the radial direction. In this case, since the reinforcing portion 109 is formed so as to protrude around the through-hole 107 on the outer surface of the side wall 106, the two bent pieces 115 that are bent can be reliably attached and hung.

  Here, the manufacturing process of the band fastener 100 will be briefly described. First, an operator punches a shape obtained by developing the fastener main body 101 and the winding shaft 110 into a flat plate shape from a metal plate made of stainless steel or the like by press working. In this case, the punching material in which the fastener main body 101 is developed into a flat plate shape includes a base portion 102, a band hanging portion 103, a notch portion 104, a bridge portion 104a, side walls 105 and 106, a shaft through hole 107, an engagement. Portions 108 and reinforcing portions 109 are integrally formed. Further, as shown in FIG. 5, the punched material obtained by developing the winding shaft 110 into a flat plate shape includes portions that become the body portion 111, the band through hole 111 a, the head portion 112, the abutting piece 113, and the bent piece 115. Each is formed integrally.

  Next, the operator completes the fastener body 101 by bending each part of the punched material obtained by developing the fastener body 101 into a flat plate shape using a press machine or the like. In this case, the operator bends the side wall 105 and the side wall 106 with the front end portions opened by bending the side wall 105 and the side wall 106 at an angle of 90 ° or more.

  Next, the operator completes a part of the winding shaft 110 by bending each part of the punched material obtained by developing the winding shaft 110 into a flat plate shape using a press machine or the like. In this case, the operator forms the bent piece 115 in a straight line without bending the body 111. Then, the operator passes the body portion 111 of the winding shaft 110 through the shaft through hole 107 of the fastener body 101 and then forms the bent piece 115 by bending the tip of the body portion 111 to form the winding shaft 110. Is assembled to the fastener body 101.

  In this case, the operator bends and shapes the bent piece 115 so that the side walls 105 and 106 are pressed inward by the bent piece 115 and the abutting piece 113, respectively. Thereby, the abutting piece 113 in the winding shaft 110 is assembled to the fastener main body 101 in a state where the pressing force is received from the side wall 105. Further, since the reinforcing portion 109 in the fastener main body 101 is formed so as to protrude from the outer surface of the side wall 106 on the inner side of each distal end portion of the bent piece 115, the bent piece 115 can be easily bent at a deep angle. Adhesion with the bent piece 115 is increased. Further, since the reinforcing portion 109 is work-hardened by plastic working, partial deformation of the side wall 106 due to pressing from the bent piece 115 can be suppressed and the entire side wall 106 can be tilted toward the side wall 105. By these operations, the operator can complete the band fastener 100.

(Operation of band fastener 100)
Next, the operation of the band fastener 100 configured as described above will be described. First, the operator prepares the band B and the band fastener 100, respectively. In this case, the band B is made of a metal material or a resin material that has flexibility and extends in a band shape. Next, the operator winds one end of the band B around the band hooking portion 103 of the fastener body 101 and then winds the band B along the outer peripheral portion of the object to be bound WK. The other end of B is wound around the body 111 of the winding shaft 110.

  Next, the operator operates the head portion 112 directly by hand or using a tool such as a screwdriver or pliers to rotate the winding shaft 110 forward so that the band B is placed on the body portion 111 of the winding shaft 110. By wrapping, the band B is bound to the outer peripheral portion of the object to be bound WK. In this case, the abutting piece 113 always receives a pressing force to the outside from the outer surface of the side wall 105 or the engaging portion 108, and thus becomes a resistance to rotation of the winding shaft 110.

  In particular, when the rotational force in the anti-rotation direction in which the winding of the band B is loosened acts on the body 111 due to the reaction force of the band B wound around the body 111, the abutting piece 113 is engaged with the engaging portion 108. In addition to blocking the rotation of the take-up shaft 110 by being strongly pressed against the rising surface portion 108a, the counter-rotation of the take-up shaft 110 is also prevented by the pressing force from the side wall 105 acting on the abutting piece 113. (See FIG. 4). As a result, the band fastener 100 can improve the reliability of the binding capability by restricting the free rotation of the winding shaft that winds the band.

  Therefore, the operator rotates the winding shaft 110 forward while resisting the reaction force from the band B and the pressing force from the side wall 105. As a result, the winding shaft 110 rotates forward as the abutting piece 113 rides on the inclined surface portion 108b of the engaging portion 108 as the side wall 105 tilts inward.

  When the operator wants to loosen the tightened state of the band B, the operator operates the head unit 112 with a tool such as a screwdriver or pliers to rotate the winding shaft 110 in the counter-rotating direction. By eliminating the winding state of the band B wound on the portion 111 according to the rotation amount, the binding state of the object to be bound WK by the band B can be relaxed. In this case, the abutting piece 113 is bent so that the tip end side is inclined forward in the winding rotation direction of the band B by the take-up shaft 110, so that the tip end portion is perpendicular to the side wall 105. It is easier to ride on the standing surface portion 108a than when standing.

  Therefore, the operator reverses the body 111 by rotating the winding shaft 110 counterclockwise with a stronger force than when the band B is wound, and riding the abutting piece 113 on the standing surface portion 108a. Can be loosened.

  As can be understood from the above description of operation, according to the above embodiment, the band fastener 100 is abutted to extend in a plate shape from the head portion 112 of the winding shaft 110 toward the side wall 105 of the fastener body 101. Since the piece 113 is provided in a state where it abuts against the side wall 105 and receives a pressing force, the adhesion between the side wall 105 and the abutting piece 113 is improved. As a result, the band fastener 100 according to the present invention can restrict the free rotation of the winding shaft 110 that winds the band B and can improve the reliability of the binding capability.

  Furthermore, in carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

  For example, in the above embodiment, the band fastener 100 is made of a stainless material. However, the band fastener 100 can also be configured using a metal material or a resin material other than stainless steel.

  Moreover, in the said embodiment, the engaging part 108 and the reinforcement part 109 shape | molded the side walls 105 and 106 by plastic processing, respectively. Thereby, the engaging part 108 and the reinforcement part 109 can improve mechanical strength by work hardening. However, the engaging portion 108 and the reinforcing portion 109 can also be formed by a forming method other than plastic processing, for example, a processing method such as cutting, injection molding, bonding, welding, or welding. Further, the reinforcing portion 109 can be omitted.

  In the above-described embodiment, the abutting pieces 113 are formed on the opposite sides of the head portion 112 with the rotation axis of the body portion 111 interposed therebetween. However, it is sufficient that at least one abutting piece 113 is provided on the head portion 112. Therefore, three or more butting pieces 113 can be provided in the head portion 112.

  Further, in the above-described embodiment, the abutting piece 113 is formed such that the tip portion is inclined at an inclination angle θ toward the front in the forward rotation direction of the winding shaft 110. Thereby, the winding shaft 110 is easily rotated in the counter-rotating direction. However, the abutting piece 113 may be formed to extend in a direction perpendicular to the side wall 105. According to this, the abutting piece 113 can be configured to be difficult to rotate in the counter-rotating direction of the winding shaft 110 or to be non-rotatable.

  Moreover, in the said embodiment, the engaging part 108 was comprised by ten protrusion arrange | positioned at ring shape. However, the engaging portion 108 is not necessarily limited to the above embodiment as long as the rotation of the winding shaft 110 can be regulated via the abutting piece 113. That is, the engaging part 108 should just be comprised by the at least 1 or more convex processus | protrusion or recessed hollow where the butting piece 113 is hooked.

  In the above embodiment, the base portion 102 is provided with the two notches 104. In this case, the two cutout portions 104 are formed with a length equal to or larger than the diameter of the engagement portion 108 at a position overlapping the engagement portion 108 in a plan view of the fastener main body 101. As a result, the fastener body 101 is deformed so that the portions where the engaging portions 108 and the reinforcing portions 109 are formed on the two side walls 105 and 106 that are to be deformed outwardly are parallel to each other. The take-up shaft 110 can be smoothly rotated. However, the base portion 102 can be configured by omitting the notch portion 104.

B ... Band, WK ... Bound object, θ ... Inclination angle of the abutting piece,
DESCRIPTION OF SYMBOLS 100 ... Band fastener, 101 ... Fastener main body, 102 ... Base part, 103 ... Band hanging part, 104 ... Notch part, 104a ... Bridge part, 105 ... Side wall, 106 ... Side wall, 107 ... Shaft through hole, 108 ... engaging portion, 108a ... standing surface portion, 108b ... slope portion, 109 ... reinforcing portion,
DESCRIPTION OF SYMBOLS 110 ... Winding shaft, 111 ... Body part, 111a ... Band through-hole, 112 ... Head part, 113 ... Abutting piece, 114 ... Operation mark, 115 ... Bending piece.

Claims (5)

A fastener body in which two side walls opposed to each other are formed upright on both sides of the plate-like base portion;
The body portion disposed between the two side walls, the head portion disposed so as to protrude in a flange shape outside each of the two side walls, and the bent piece are integrally provided and can be rotated with respect to the two side walls. A band fastening tool including a winding shaft that penetrates in a state and winds the band at the body portion,
The two side walls are
While pressing the head part and the bent piece respectively outward, a plurality of convex shapes along the circumferential direction of the take-up shaft around the portion of the side wall facing the head part through which the take-up shaft passes. A concave engagement portion is formed,
The head portion is
A band fastening tool comprising a plate-like abutting piece that projects toward the side wall and receives a pressing force from the side wall by abutting against the side wall. In the band fastener described in claim 1,
The engaging portion is
It is formed in a state where a part of the side wall is plastically deformed and work hardened,
The side wall facing the bent piece is:
A band fastening tool comprising a reinforcing portion that is plastically deformed in a ring shape around a portion through which the winding shaft passes and is work-hardened. In the band fastener described in claim 1 or claim 2,
The abutting piece is
One band fastening tool is provided for each of the heads or at positions opposite to each other across the rotation axis of the winding shaft. In the band fastener described in any one of claims 1 to 3,
The abutting piece is
The band fastener according to claim 1, wherein a front end portion that abuts against the side wall is bent toward a winding direction of the band on the winding shaft. In the band fastener formed in any one of Claims 1 thru | or 4,
The fastener body is
Each of which has a notch portion that is notched in a state where the central portion between the two side walls is left in a portion where the two side walls stand with respect to the base portion;
The two notches are
A band fastener having a length equal to or greater than a diameter of the engaging portion at a position overlapping the engaging portion.

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