Fastening band

Abstract

To provide a fastening band which is easy to fasten and provides a strong and stable fastening force.SOLUTION: In a fastening band B, a flat band body B1 formed of an elastic material comprises: each projection part 1 projectingly formed in a direction intersecting a longitudinal direction X of the band body B1 from the band body B1 in the vicinity of one end part along the longitudinal direction X; and each hole part 2 formed so as to be engaged with each projection part 1 in the vicinity of the other end part along the longitudinal direction X of the band body B1. The respective projection parts 1 and the respective hole parts 2 are formed along the longitudinal direction X, and a distance between the respective hole parts 2 is shorter than a distance between the respective projection parts 1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fastening band having a projection provided at one end along the longitudinal direction and a hole provided at the other end along the longitudinal direction so as to be engageable with the projection. [Background technology]

[0002] Conventionally, such fastening bands include, for example, those shown in Patent Document 1 (

[0009] to

[0011] , see FIG. 1).

[0003] This fastening band comprises a string portion that is stretchable in the longitudinal direction, a knob portion provided on one end side of the string portion, and a receiving hole formed on the other end side of the string portion and through which the knob portion is fitted to connect the one end side of the string portion with the knob portion provided to the other end side of the string portion.

[0004] At least one of the bump and the receiving hole is made of an elastic material so that the bump can be pushed into the receiving hole. The opening diameter of the receiving hole is made smaller than the outer diameter of the bump so that the bump can be prevented from slipping out of the receiving hole once it has been fitted through. Projections are formed on the sides of the receiving hole so as to sandwich the receiving hole and protrude in the opposite direction to the string.

[0005] According to the present invention, such a configuration allows the fastening band to be manufactured at low cost, while still allowing both ends of the string portion to be securely connected and detached in a loop, thereby providing a reusable fastening band. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Unexamined Japanese Patent Publication No. 2019-142528 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the above-mentioned conventional fastening bands have only one receiving hole for inserting the knob, so that, for example, when bundling multiple objects to be fastened together, even if an attempt is made to increase the fastening force, the locking force exerted by the knob and the receiving hole is limited, and a strong fastening effect cannot be expected.

[0008] The locking structure has a knob at one end that is inserted into a receiving hole at the other end, and the direction in which the knob is pulled out of the receiving hole is at a predetermined angle with respect to the longitudinal direction of the string. Therefore, when a tensile force acts on the string with the fastening band fastened to the fastening object, the direction of the tensile force is similar to the direction in which the knob is pulled out of the hole. Therefore, there is a limit to how much the locking force between the knob and the hole can be increased.

[0009] Furthermore, if the lump formed on the end of the string is inserted into the receiving hole, the lump will always be protruding from the receiving hole, making it prone to interfering with other objects and, in some cases, the lump may even slip out of the receiving hole.

[0010] As described above, there is still room for improvement in conventional fastening bands, and an object of the present invention is to provide a fastening band that is easy to fasten and can stably provide a strong fastening force. [Means for solving the problem]

[0011] (Features) The characteristic configuration of the fastening band according to the present invention is as follows: A flat band body made of an elastic material, a protrusion formed in the vicinity of one end of the band body along the longitudinal direction and protruding from the band body in a direction intersecting the longitudinal direction; a hole portion formed in the vicinity of the other end portion of the band body along the longitudinal direction so as to be able to be engaged with the protrusion portion, The projections and the holes are each formed in a plurality of portions along the longitudinal direction, and the distance between the holes is shorter than the distance between the projections.

[0012] (effect) The band body of this configuration is made of an elastic material, and when attached to an object to be fastened, the band body undergoes some stretching. Also, the area where the holes are formed has lower rigidity and higher stretching characteristics than the area where the protrusions are formed.

[0013] Therefore, in this configuration, the positions of the projections and the positions of the holes are related to each other, and the distance between the holes is made shorter than the distance between the projections in the longitudinal direction. This makes the distance between the holes, which are easily affected by stretching, the distance between the projections, which are not easily affected by stretching, the same, and ensures a secure engagement between the two.

[0014] In addition, in this configuration, the holes are engaged with the protrusions that protrude so as to intersect with the longitudinal direction of the band body, so the fastening portion is aligned with the longitudinal direction of the band body and fits compactly. Therefore, there is little opportunity for the fastening band to interfere with other objects when fastened, and the holes are less likely to come off the protrusions.

[0015] (Features) In the fastening band according to the present invention, it is advantageous that the width of the hole in the longitudinal direction is formed to be shorter than the width of the protrusion in the longitudinal direction.

[0016] (effect) In this configuration, by forming the width of the hole portion along the longitudinal direction to be shorter than the width of the protrusion portion along the longitudinal direction, when the protrusion portion and the hole portion are engaged with each other, the hole portion elastically deforms and expands, so that the two portions securely abut and the engaged state is stabilized.

[0017] (Features) In the fastening band of the present invention, the side of the protrusion that faces the center of the band body along the longitudinal direction can be formed as a locking plane that is biased toward the center the further it is from the surface of the band body.

[0018] (effect) In this configuration, the further the locking plane of the protrusion is from the band body, the more it is displaced toward the center of the band body. This makes it easier for the edge of the hole to move in a direction that deepens the locking state when the edge of the hole is locked to the locking plane. This makes it easier to lock the hole and obtain a stronger locking state.

[0019] (Features) In the fastening band of the present invention, the side of the surface of the protrusion that is opposite the locking plane can be formed as an abutment plane that is biased toward the one end as it moves away from the surface of the band body.

[0020] (effect) When the fastening band is wrapped around an object to be fastened and the hole is engaged with the protrusion, the band body stretches elastically by a predetermined length, and elastic deformation occurs in the vicinity of the hole. At this time, one edge of the hole abuts against the abutment plane of the protrusion, and the inclination effect of the abutment plane ensures that the edge is engaged with the protrusion. Therefore, when the end of the band body is pulled while the hole is hooked onto the protrusion, the other edge of the hole easily passes over the engagement plane of the protrusion, making the engagement operation extremely easy.

[0021] (Features) In the fastening band according to the present invention, the multiple holes can be configured by a combination of a first hole having a curved edge shape and a second hole having a linear shape perpendicular to the longitudinal direction in the area of ​​the edge that abuts the protrusion and located farther away from the multiple protrusions than the first hole.

[0022] (effect) When the band body is wrapped around a fastening object, the band body is stretched by a predetermined amount, so that the band body is stretched by a predetermined amount. The first hole portion and the second hole portion are formed at positions with different distances from the area where the multiple protrusions are formed, and a larger locking load is often applied to the first hole portion closer to the protrusions. In other words, the first hole portion has a function of maintaining the stretched state of the band body by locking with the protrusions and generating a predetermined fastening force. Therefore, the amount of deformation is large around the first hole portion, and the stress borne by the member is large. Therefore, the shape of the first hole portion is curved to suppress the occurrence of excessive stress concentration locally.

[0023] On the other hand, the second hole also engages with the protrusion and contributes to the fastening force of the band body. However, depending on the stretch of the band body, the stretch rate of the region between the first hole and the second hole may be smaller than the overall stretch rate of the band body. In this case, the locking function of the second hole is mainly to prevent the second hole from coming off the protrusion, rather than to bear the stretch of the band body. In this case, it is preferable that the longest region of the edge of the second hole exerts an equal locking force on the protrusion. Therefore, a straight line portion perpendicular to the longitudinal direction is formed on the edge of the second hole, and a long region that exerts a locking force on the protrusion along the longitudinal direction is formed.

[0024] This makes it possible to obtain a fastening band that exhibits a predetermined fastening force, has excellent durability, and is less likely to come loose at the ends of the band body.

[0025] (Features) In the fastening band according to the present invention, it is advantageous if the first hole portion is circular and the second hole portion is rectangular, and if, among the multiple protrusions, the one that engages with the first hole portion is a first protrusion portion having a circular cross section, and the one that engages with the second hole portion is a second protrusion portion having a rectangular cross section.

[0026] (effect) With this configuration, the first protrusion and the first hole, which have a circular cross-sectional shape, can increase the fastening force of the band body while mitigating stress concentration at the contact portion between the two. Furthermore, the second protrusion and the second hole, which have a rectangular cross-sectional shape, can ensure the contact length between the two in the direction perpendicular to the longitudinal direction, effectively preventing the end of the band body from lifting up.

[0027] (Features) In the fastening band according to the present invention, it is advantageous that a groove-shaped thin-walled portion is formed along the longitudinal direction in the region of the band body between the projection and the hole that are located closest to each other.

[0028] (effect) With this configuration, when the band body is wrapped around the object to be fastened, the area between the closest protrusion and hole is stretched and comes into close contact with the object to be fastened. In this state, a difference occurs in the stretching stress borne by the thin-walled area and the other areas. In this case, a difference occurs in the contact force that the inner surface of the band body in both areas exerts on the object to be fastened, and the frictional force between the object to be fastened and the band body varies depending on the part of the band body. As a result, the band body is prevented from shifting in position, and the fastening state is stable.

[0029] Furthermore, if the thin-walled portion is a groove, a longitudinal region that generates a different frictional force against the fastening object is provided along the longitudinal direction of the band body. This makes it difficult for the band body to shift in position relative to the fastening object in a direction perpendicular to its longitudinal direction, making the fastening state more stable. Furthermore, if the groove is a groove, the configuration of the mold for forming the fastening band is simplified, and manufacturing costs are reduced. [Brief description of the drawings]

[0030] [Figure 1] FIG. 1 is a perspective view showing a configuration of a fastening band according to a first embodiment; [Diagram 2] FIG. 1 is an explanatory diagram showing a configuration of a fastening band according to a first embodiment; [Diagram 3] FIG. 1 is an explanatory diagram showing the function of a fastening band according to a first embodiment; [Figure 4] FIG. 13 is a perspective view showing a configuration of a fastening band according to a second embodiment; [Diagram 5] FIG. 11 is an explanatory diagram showing the function of a fastening band according to a second embodiment. [Figure 6] FIG. 11 is a perspective view showing the configuration and function of a fastening band according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] 〔overview〕 The fastening band B according to the present invention is a member that can be wrapped around a target long member and then lock the ends together when bundling various long members together or fixing various long members to other objects. Each embodiment of the fastening band B according to the present invention will be described with reference to the drawings.

[0032] [First embodiment] The fastening band B of this embodiment is shown in Figures 1 to 3. As shown in Figure 1, the fastening band B of this embodiment has a flat band body B1 made of an elastic material. As the elastic material, for example, various rubber materials, thermoplastic elastomers, etc. can be used.

[0033] In the band body B1, a protrusion 1 is formed near one end along the longitudinal direction X, protruding in a direction intersecting the longitudinal direction X. Here, a prismatic shape is exemplified as the shape of the protrusion 1. However, it may also be substantially cylindrical. Meanwhile, in the band body B1, a hole 2 is formed near the other end so as to be able to be engaged with the protrusion 1. Here, the shape of the hole 2 is rectangular so as to fit the prismatic protrusion 1. The hole 2 can also be configured, for example, in a circular shape. Each of these protrusions 1 and holes 2 is formed in a plurality along the longitudinal direction X. In the fastening band B of this embodiment, the engagement operation of the plurality of protrusions 1 and holes 2 is easy, and a reliable engagement state is obtained. Details of each part will be described below.

[0034] (protrusion) 1 to 3 show an example in which two protrusions 1 are provided at one end of a band body B1. A somewhat thicker thick portion B2 is formed at one end of the band body B1. The protrusions 1 are formed integrally with this thick portion B2, and two protrusions 1 are provided integrally along the longitudinal direction X at the center position in the width direction of the band body B1. The shape of the protrusions 1 is, for example, a rectangular column, and the four side surfaces 11 are formed to be approximately aligned with or approximately perpendicular to the longitudinal direction X.

[0035] (hole) 1 and 2, a long band body B1 is provided adjacent to the thick portion B2. An aperture 2 is provided at an end of the band body B1. The edges 21 forming the aperture 2 are each formed as a straight line substantially parallel to the longitudinal direction X and a straight line substantially perpendicular to the longitudinal direction X.

[0036] By making the shape of the protrusion 1 and the shape of the hole 2 rectangular in this way, local deformation is unlikely to occur at the contact area between the protrusion 1 and the hole 2 when they are engaged with each other. In other words, since they contact each other linearly, the pressing force acting on the protrusion 1 and the hole 2 is dispersed to the linear contact area.

[0037] In addition, a tensile force acts on the band body B1, and in the hole 2 that engages with the protrusion 1, large elastic deformation occurs on both sides of the edge 21 that is approximately perpendicular to the longitudinal direction X. By dispersing the areas with large deformation in this way, the stress concentration occurring in each area is reduced, and problems such as cracks occurring at specific positions near the hole 2 are less likely to occur.

[0038] (Engagement between the protrusion and the hole) As shown in Fig. 2(a), the protrusions 1 and holes 2 in this embodiment are formed such that the distance L2 between the holes 2 is shorter than the distance L1 between the protrusions 1. That is, since the fastening band B in this embodiment is made of rubber, for example, the band body B1 is in a predetermined tension state when attached to a fastening object. However, in this configuration, when the multiple protrusions 1 and holes 2 are engaged with each other, in addition to the region between the protrusions 1 and holes 2 that is in the tension state, the stretch deformation of the region between adjacent holes 2 is also taken into consideration.

[0039] By forming the distance L2 between the holes 2 shorter than the distance L1 between the protrusions 1, the locked band body B1 is in the state shown in Fig. 2(b). In other words, the opening shape of the holes 2 changes, and the distance between the holes 2 becomes slightly wider. This makes the stretch of the part of the band body B1 that is wrapped around the object to be fastened similar to the stretch of the area between the adjacent holes 2, and the degree of deformation of each hole 2 becomes equivalent. This makes the locking effect between the protrusions 1 and the holes 2 in the two locations similar.

[0040] Furthermore, if the rigidity of the band body B1 in which the hole 2 is formed is greater than the rigidity of the thick portion B2 in which the protrusion 1 is formed, it is preferable to set the distance L1 between the protrusions 1 to be shorter than the distance L2 between the holes 2.

[0041] (Details of protrusions and holes) 3(a) shows a side cross section of the engagement position between the protrusion 1 and the hole 2. This figure shows the state in which one of the holes 2 is engaged with the protrusion 1 while pulling the end of the band body B1, and the tension on the band body B1 is being released. The protrusion 1 here is particularly formed on the end-most side of the band body B1, and most of the stretching force of the band body B1 often acts on this protrusion 1.

[0042] Of the protrusion 1, the side surface 11 on the central side of the band body B1 along the longitudinal direction X is the locking side surface 11a. When the locking side surface 11a is locked with the hole 2, it bears the tensile force between the hole 2 and the locking side surface 11a. The locking side surface 11a is displaced toward the center as it moves away from the surface of the band body B1. As shown in FIG. 3(a), when the edge portion 21 of the hole 2 starts to lock with the locking side surface 11a, the hole 2 tries to shrink in the direction of the arrow in the figure, and the hole 2 is guided toward the base side of the protrusion 1. This edge portion 21 is particularly referred to as the locking edge portion 21a. This makes it easier to lock the hole 2 to the protrusion 1. In addition, when the locking is completed, it is naturally difficult for the hole 2 to come off the protrusion 1.

[0043] On the other hand, the surface formed on the opposite side of the locking side 11a is also configured to be biased toward the end side of the band body B1 as it moves away from the surface of the band body B1. This configuration facilitates the work of fastening the band body B1 to an object to be fastened, and this surface is referred to as the abutment side 11b.

[0044] When the fastening band B is wrapped around an object to be fastened and the hole 2 is engaged with the protrusion 1, the band body B1 is elastically stretched by a predetermined length, and the vicinity of the hole 2 is deformed. As shown in FIG. 3(b), one edge 21 of the hole 2 abuts against the abutment side surface 11b of the protrusion 1, and the inclination effect of the abutment side surface 11b ensures that the edge 21 is engaged with the protrusion 1. This edge 21 is referred to as the abutment edge 21b. By further pulling the band body B1 while hooking the abutment edge 21b on the abutment side surface 11b in this way, the other engagement edge 21a of the hole 2 becomes more likely to pass over the engagement side surface 11a of the protrusion 1, making the engagement operation easier.

[0045] In this embodiment, the protrusions 1 and holes 2 are provided in two or more locations, and the engagement between a pair of the protrusions 1 and holes 2 has the function of preventing the end of the band body B1 from coming off and floating up.

[0046] As shown in Figure 3(b), the projection 1 and hole 2 on the right side of the figure exert a lift-up prevention function. This figure shows the state where the hole 2 reaches the locking position with respect to the projection 1 on the left side, and further, the right hole 2 is in the process of locking with the projection 1. At this time, the right abutting edge 21b also abuts against the abutting side surface 11b, deepening the locking state between the two and causing the position of the locking edge 21a to exceed the locking side surface 11a.

[0047] When the right side is locked, the pulling force on the band body B1 is released, and as a result, as shown in Fig. 3(c), the contact force of the locking edge 21a against the locking side surface 11a exceeds the contact pressure between the abutment side surface 11b and the abutment edge 21b for both sets of the protrusion 1 and the hole 2, and the two sets are stabilized.

[0048] The shapes of the projection 1 and hole 2 in this embodiment when viewed in a direction perpendicular to the band body B1 are as follows. As shown in Fig. 2(a), the width of the hole 2 along the longitudinal direction X, i.e., the width S2 from the abutting edge 21b to the locking edge 21a, is made shorter than the width of the projection 1 along the longitudinal direction X, i.e., the width S1 from the locking side surface 11a to the abutting side surface 11b. This relationship applies when the band body B1 is in its natural state.

[0049] In the state where the protrusion 1 and the hole 2 are engaged, as shown in FIG. 2(b), the engaging edge 21a and the abutting edge 21b of the hole 2 are often in close contact with the engaging side surface 11a and the abutting side surface 11b of the protrusion 1, respectively. In this state, the hole 2 is slightly elastically deformed and expands in the longitudinal direction X, so that the hole 2 sandwiches the protrusion 1 along the longitudinal direction X. Thus, the engagement state between the two is stabilized. In this abutment state, the engaging side surface 11a and the abutting side surface 11b are substantially flat, and the protrusion 1 has a certain rigidity due to its own shape, so that they abut each other linearly. Therefore, even in the area near the hole 2, which is thin and prone to deformation, excessive deformation is suppressed, and a fastening band B with high durability can be obtained.

[0050] FIG. 2 shows an example in which the hole 2 is rectangular. In this case, when the hole 2 is engaged with the protrusion 1, it is easy to find the appropriate engagement position of the two. In particular, as shown in FIG. 3, this is effective when the end of the band body B1 is pulled when engaging the two, and the width S2 of the hole 2 along the longitudinal direction X is expanded to be equal to or larger than the width S1 of the protrusion 1 along the same direction. In other words, although the shape of the abutment edge 21b is somewhat deformed, if the hole 2 is rectangular, the abutment edge 21b is maintained in a state close to a straight line. Therefore, the position of the hole 2 relative to the protrusion 1 is easy to see, and the engagement operation is easier than when, for example, a round hole 2 is provided in the band body B1.

[0051] Second Embodiment A second embodiment of the fastening band according to the present invention is shown in Figs. 4 and 5. In this embodiment, the hole 2 includes a first hole 201 and a second hole 202 having different shapes. The first hole 201 has a curved edge 21, e.g., a circular shape. In contrast, the second hole 202 has a linear shape perpendicular to the longitudinal direction X in the region of the edge 21 that contacts the protrusion 1, e.g., a rectangular shape. The second hole 202 is located farther away from the multiple protrusions 1 formed on the band body B1 than the first hole 201. The shape of the second hole 202 may be a triangular shape other than a rectangular shape, as long as it includes a linear edge 21.

[0052] When the band body B1 is wrapped around a fastening object, the band body B1 is stretched by a predetermined amount, so that the band body B1 as a whole is stretched by a predetermined amount. The first hole 201 and the second hole 202 are formed at positions with different distances from the area where the multiple protrusions 1 are formed, and when the band body B1 is stretched by a large amount, a larger locking load acts on the first hole 201, which is closer to the protrusions 1.

[0053] That is, the first hole 201 maintains the stretched state of the band body B1 by engaging with the protrusion 1, and generates a predetermined fastening force. At this time, the amount of deformation is large around the first hole 201, and the stress borne by the band body B1 is large. Therefore, in this configuration, the shape of the first hole 201 is curved, such as a circle, so that even if the stress increases, excessive stress concentration does not occur locally. The shape of the second hole 202 may be a semicircle or an ellipse other than a circle, as long as it has a curved edge 21.

[0054] The first protrusion 101 is what engages with the first hole 201. The shape of the first protrusion 101 is not particularly limited, but it is advantageous if it is configured in a roughly cylindrical shape as shown in FIG. 4, as this provides a good engagement with the first hole 201.

[0055] On the other hand, the second hole 202 also engages with the protrusion 1 to generate a fastening force for the band body B1. However, depending on how the band body B1 is stretched, the elongation rate of the region between the first hole 201 and the second hole 202 may be smaller than the overall elongation rate of the band body B1. In this case, the main function of the engagement of the second hole 202 is to prevent the second hole 202 from coming off the protrusion 1, rather than to bear the elongation force of the band body B1.

[0056] For this purpose, it is preferable that the longest possible region of edge 21 of second hole 202 exerts an equal locking force on protrusion 1. Therefore, a straight line portion perpendicular to longitudinal direction X is formed on edge 21 of second hole 202, and a wide region is formed that exerts a locking force on protrusion 1 in longitudinal direction X.

[0057] The part that engages with the second hole portion 202 is referred to as the second protrusion portion 102. The shape of the second protrusion portion 102 is not particularly limited, but it is advantageous if it is configured in an approximately rectangular column shape as shown in FIG. 4, since this ensures a linear contact area with the second hole portion 202.

[0058] By using the first hole portion 201 and the second hole portion 202 having different shapes in this manner, a fastening band can be obtained that exerts a predetermined fastening force while having excellent durability and is less likely to come loose at the end of the band main body B1.

[0059] In addition, the first protrusion 101 and the first hole 201, which have a circular cross-sectional shape, reduce stress concentration at the contact portion between them, thereby increasing the fastening force of the band body B1. Furthermore, the second protrusion 102 and the second hole 202, which have a rectangular cross-sectional shape, ensure the contact length between them in the direction perpendicular to the longitudinal direction X, effectively preventing the end of the band body B1 from lifting up.

[0060] Furthermore, in this embodiment, a groove-shaped thin wall portion 3 is formed along the longitudinal direction X in the band body B1 in a region between the second protrusion 102 and the first hole 201, which are located closest to each other. Specifically, a first thick wall portion B21 is formed along the longitudinal direction X, including the periphery of the first hole 201. Also, a second thick wall portion B22 is formed along the longitudinal direction X, including the periphery of the second hole 202. The second thick wall portion B22 extends to the region of the protrusion 1 on both outer sides of the first thick wall portion B21. A thin wall portion 3 having a small thickness is formed in the region between the first thick wall portion B21 and the second thick wall portion B22 and in a region further outside the second thick wall portion B22.

[0061] With this configuration, as shown in Fig. 5, when the band body B1 is stretched during fastening, the stretching stress generated in the thin-walled portion 3 area differs from that generated in the adjacent thick-walled portion B2. As a result, the contact force that the inner surface of the band body B1 exerts on the fastening object differs depending on the portion of the band body B1, making it difficult for the band body B1 to shift position.

[0062] In this embodiment, the thin-walled portion 3 is configured as a groove formed along the longitudinal direction X. The groove is configured integrally with the band body B1, and a constant abutting posture is obtained against the fastening object, improving the fastening effect. In addition, when the groove is formed, the configuration of the mold for forming the fastening band B is simplified, and the manufacturing cost is reduced. Note that such a groove can also be formed in the band body B1 configured according to Figures 1 to 3.

[0063] Third Embodiment A second embodiment of the fastening band B according to the present invention is shown in Fig. 6. In this embodiment, the thick portion B2 is not formed at the end of the band body B1, and the thickness is constant over the entire length. Also, the thickness is constant over the entire width, and no thin portion 3 is provided.

[0064] As shown in Fig. 6(a), one end of the band body B1 is formed with, for example, three tongue edges 10. The opposite end is formed with three slits 20 into which the tongue edges 10 engage. Fig. 6(b) shows the state in which the tongue edges 10 and the slits 20 are engaged with each other.

[0065] In this configuration, too, the distance L2 between the slits 20 at different positions along the longitudinal direction X is set to be shorter by a predetermined distance than the distance L1 between the tongue edges 10 at different positions along the longitudinal direction X. This makes it easier to set the engagement state of each tongue edge 10 and slit 20 to the same state even if the band body B1 stretches when fastened.

[0066] Moreover, the width S2 of the slit 20 along the longitudinal direction X is configured to be narrower than the thickness T10 of the tongue edge 10. This creates an effect that the slit 20 holds the tongue edge 10 along the longitudinal direction X when both are engaged, effectively preventing the tongue edge 10 from slipping out.

[0067] The arrangement of the tongue edges 10 and the slits 20 is not limited to that shown in FIG. 6, and the number of the tongue edges 10 and the slits 20 or the positions thereof may be arbitrarily set.

[0068] Other embodiments Although the thin-walled portion 3 in FIG. 4 is a continuous recessed portion along the longitudinal direction X, the recessed portions may be formed intermittently along the longitudinal direction X.

[0069] With this configuration, when the band body B1 is in a tensile state, the region with a small cross-sectional area due to the formation of the thin-walled portion 3 elongates more in the longitudinal direction X, while the region with a large cross-sectional area without the thin-walled portion 3 elongates less in the same direction. As a result, the contact force that the band body B1 imparts to the object to be fastened 4 changes along the longitudinal direction X, and positional deviation of the band body B1 along the longitudinal direction X after fastening is suppressed.

[0070] Furthermore, the thin-walled portion 3 may be a simple recess such as a groove, or may be a notch penetrating to the back surface of the band body B1. In the case of a notch, forming notches of a predetermined length in a vertical row along the longitudinal direction X makes it easier to maintain the overall shape of the band body B1. [Industrial Applicability]

[0071] The fastening band of the present invention can be widely applied as a fastening band having a protrusion portion provided at one end along the longitudinal direction and a hole portion provided at the other end along the longitudinal direction so as to be able to engage with the protrusion portion. [Explanation of symbols]

[0072] 1 Protrusion 1 11 Side 11 11a Locking side 11a11 11b Contact side 11b11 101 1st protrusion 102 Second protrusion 2 Hole 2 21 Edge 21 201 1st hole 202 2nd hole 3 Thin section B Fastening band B1 Band body B1 X Longitudinal direction X

Claims

1. A flat band body made of an elastic material, a protrusion formed in the vicinity of one end of the band body along the longitudinal direction and protruding from the band body in a direction intersecting the longitudinal direction; a hole portion formed in the vicinity of the other end portion of the band body along the longitudinal direction so as to be able to be engaged with the protrusion portion, A fastening band in which a plurality of the projections and a plurality of the holes are formed along the longitudinal direction, and the distance between the holes is shorter than the distance between the projections.

2. The fastening band according to claim 1 , wherein a width of the hole along the longitudinal direction is smaller than a width of the protrusion along the longitudinal direction.

3. The fastening band according to claim 2, wherein a side surface of the protrusion that faces the center of the band body along the longitudinal direction is formed as a locking plane that is biased toward the center as it moves away from the surface of the band body.

4. The fastening band according to claim 3, wherein the side surface of the projection opposite the locking plane is formed as an abutment plane that is biased toward the one end as it moves away from the surface of the band body.

5. The plurality of holes are A first hole portion having a curved edge shape; and a second hole portion, the shape of which is a straight line perpendicular to the longitudinal direction and which is located farther away from the plurality of protrusions than the first hole portion. The fastening band according to claim 4, further comprising: a first hole portion, the second hole portion having a shape perpendicular to the longitudinal direction and which is located farther away from the plurality of protrusions than the first hole portion.

6. the first hole portion is circular and the second hole portion is rectangular; The fastening band according to claim 5, wherein, among the plurality of protrusions, the first hole portion is engaged with a first protrusion having a circular cross section, and the second hole portion is engaged with a second protrusion having a rectangular cross section.

7. The fastening band according to claim 6, wherein a groove-shaped thin-walled portion is formed along the longitudinal direction in a region of the band body between the second protrusion portion and the first hole portion that are located closest to each other.

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