JP2020190294A - Tie band and its manufacturing method - Google Patents

Abstract

To provide a tie band which can easily cut a tip part of a band part inserted into an engagement hole of a head part while leaving a prescribed length of a cut margin, and can suppress the contact of a portion of the cut margin with a worker and other components, and its manufacturing method.SOLUTION: A tie band 2 comprises a head part 2a having an engagement hole 4, and a band part 2b extending from the head part 2a. The band part 2b is engaged with the head part 2a so as not to be withdrawn from the engagement hole 4 by being formed into a loop shape, and inserted into the engagement hole 4 of the head part 2a. The band part 2b has a first salient part 2c inserted into the engagement hole 4, and salient in a direction separating from the head part 2a. A second salient part 5 salient in a direction which is the same as that of the first salient part 2c is formed at the head part 2a of the tie band 2. The head part 2a and the second salient part 5 are formed by two-color molding. Also, the second salient part 5 is telescopic in a protrusion direction with respect to the head part 2a by being formed of a material which is easier to be deformed than the head part 2a.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tie band and a method for producing the same.

In vehicles and the like, wire harnesses are fixed to the vehicle body and the like by tie bands. As shown in Patent Document 1, such a tie band includes a head having an engaging hole and a band portion extending from the same head, and the band portion is looped and inserted into the engaging hole of the head. By letting it engage, it is engaged with the head so as not to be pulled out from the engagement hole.

The band portion of the tie band is inserted into the engagement hole of the head of the tie band in a looped state and wound around the wire harness and the vehicle body. Then, when the tip of the band inserted into the engagement hole is pulled, the wire harness is tightened together with the vehicle body by the band, and the band is not pulled out with respect to the head of the tie band in the direction opposite to the insertion direction. To be engaged. As a result, the wire harness is fixed to the vehicle body.

By the way, the thickness of the wire harness and the portion to which the wire harness is fixed varies. Therefore, in the tie band for fixing the wire harness, the length of the band portion extending from the head is set longer. When the length of the band portion is set to be long in this way, when the band portion of the tie band is inserted into the head of the tie band in order to fix the wire harness to the vehicle body or the like using the tie band, the tie band is used. The tip of the band in the insertion direction is likely to protrude significantly from the head.

Therefore, the tip of the band that protrudes from the head is cut with a tool such as a band cutter, leaving a cutting allowance of a predetermined length. By the way, if a cutting allowance of a predetermined length is not left at the tip of the band in this way, a force in the extraction direction from the head acts on the band that is engaged with the head. When the band portion is displaced with respect to the head in the extraction direction, the engagement between the head and the band portion may be weakened and the band portion may be extracted with respect to the head.

However, if a cut allowance of a predetermined length is left at the tip of the band inserted into the head of the tie band and protruding from the head, the cut allowance in the band becomes a worker or the like. There is a risk of contact with parts of. Therefore, as shown in Patent Document 1, an extension portion protruding in the same direction as the cut allowance portion in the band portion is integrally formed on the head of the tie band, and the extension portion causes the cut allowance portion to be formed by an operator. It is designed to prevent contact with other parts.

JP-A-2017-210988

As shown in Patent Document 1, when the extension portion is integrally formed with the head of the tie band, the extension portion of the extension portion is less likely to come into contact with the operator or other parts. It is undeniable that it becomes difficult to cut the band part with a tool such as a band cutter depending on the part.

An object of the present invention is that the tip of the band portion inserted into the engaging hole of the head can be easily cut leaving a cutting allowance of a predetermined length, and the cutting allowance portion is formed by an operator or the like. It is an object of the present invention to provide a tie band capable of suppressing contact with other parts and a method for manufacturing the same.

Hereinafter, means for solving the above problems and their actions and effects will be described.
The tie band that solves the above problems includes a head having an engaging hole and a band portion extending from the same head, and the band portion is looped and inserted into the engaging hole of the head. It is engaged with the head so that it will not be pulled out from the engagement hole. The band portion has a first protruding portion that is inserted into the engaging hole and projects in a direction away from the head. The tie band has a second protruding portion provided on the head and protruding in the same direction as the first protruding portion. The second protruding portion is formed so as to be able to expand and contract in the protruding direction with respect to the head.

According to the above configuration, when the band portion of the tie band is looped and inserted into the engaging hole of the head of the tie band, the tip portion of the band portion in the insertion direction greatly protrudes from the head. .. Then, when excising the first protruding portion, which is the tip of the band portion inserted into the head of the tie band and protrudes from the same head, leaving a cutting allowance of a predetermined length, it is provided on the head. The second protruding portion is made to contract in a direction approaching the same head. As a result, when the first protruding portion of the band portion is excised as described above, it is possible to prevent the second protruding portion from becoming an obstacle. Further, after the first protruding portion of the band portion is excised as described above, the second protruding portion is returned to the position before shrinking as described above, so that the second protruding portion extends in the direction away from the head. , The cut allowance portion of the first protruding portion of the band portion is less likely to come into contact with the operator or other parts due to the second protruding portion.

In the tie band, it is conceivable that the second protruding portion is formed in a tubular shape so as to surround the periphery of the first protruding portion.
According to this configuration, when the first protruding portion of the band portion is excised with a cutting allowance of a predetermined length left, the circumference of the cutting allowance portion can be surrounded by the second protruding portion. The protrusion makes it more difficult for the cut allowance portion of the first protrusion to come into contact with the operator or other parts.

It is conceivable that the second protruding portion is formed of a material that is more easily elastically deformed than the head.
According to this configuration, when the first protruding portion of the band portion is excised with a cut allowance of a predetermined length left, the second protruding portion can be easily contracted by elastic deformation in the direction approaching the head. Further, after the first protruding portion of the band portion is excised as described above, the second protruding portion extends in the direction away from the head due to its own elasticity, so that the cut allowance portion in the first protruding portion of the band portion. Is easily surrounded by the second protrusion.

A method for manufacturing a tie band that solves the above problems is to engage a head having an engaging hole with the head so as not to be pulled out from the engaging hole by extending from the head and being inserted into the engaging hole. The band portion to be formed, the first protruding portion inserted into the engaging hole in the band portion and protruding in the direction away from the head, and the first protruding portion provided on the head so as to project in the same direction as the first protruding portion. It is applied to a tie band having two protrusions. In this manufacturing method, a second protruding portion made of a material that is more easily elastically deformed than the head and the head are formed by two-color molding.

According to the tie band manufactured by this method, the band portion inserted into the engagement hole of the head is formed by contracting the second protrusion provided on the head in the direction approaching the head. The first protruding portion can be easily cut leaving a cutting allowance of a predetermined length. Further, after the first protrusion of the band is excised as described above, the second protrusion extends in the direction away from the head due to its own elasticity, so that the cut allowance portion in the first protrusion of the band Can be prevented from coming into contact with the operator or other parts by the second protrusion. Further, according to the above method, the head of the tie band and the second protruding portion made of a material that is more easily elastically deformed than the same head can be easily formed by two-color molding.

According to the present invention, the tip of the band portion inserted into the engaging hole of the head can be easily cut leaving a cutting allowance of a predetermined length, and the cutting allowance portion is formed by an operator or the like. Contact with other parts can be suppressed.

The cross-sectional view which shows the usage mode of a tie band. A perspective view showing a tie band. FIG. 3 is a plan view showing a procedure for excising the first protruding portion of the band portion inserted into the head of the tie band. FIG. 3 is a plan view showing a procedure for excising the first protruding portion of the band portion inserted into the head of the tie band. FIG. 3 is a plan view showing a procedure for excising the first protruding portion of the band portion inserted into the head of the tie band. FIG. 5 is a cross-sectional view showing another example of a head and a second protrusion in a die band.

Hereinafter, an embodiment of the tie band and its manufacturing method will be described with reference to FIGS. 1 to 5.
As shown in FIG. 1, in a vehicle such as an automobile, the wire harness 1 is fixed to the vehicle body 3 or the like by a tie band 2. Such a tie band 2 includes a rectangular parallelepiped head portion 2a made of a resin having an engaging hole 4, and a band portion 2b made of the same resin extending from the head portion 2a. The band portion 2b of the tie band 2 is inserted into the engagement hole 4 of the head portion 2a of the tie band 2 in a state of being wound around the wire harness 1 and the vehicle body 3 in a loop shape. Then, by pulling the tip of the band portion 2b inserted into the engagement hole 4, the wire harness 1 is tightened together with the vehicle body 3 by the band portion 2b, and the band portion 2b is tightened with respect to the head portion 2a of the tie band 2. Engage so that it is not pulled out in the direction opposite to the insertion direction.

By the way, a large number of mountain portions (not shown) are formed in the band portion 2b of the tie band 2 at intervals in the extending direction of the band portion 2b, and are formed in the engaging hole 4 in the head portion 2a of the tie band 2. Is formed with a groove portion (not shown) that can be engaged with the mountain portion of the band portion 2b. Then, this groove allows the displacement of the mountain portion in the insertion direction of the band portion 2b with respect to the engaging hole 4, while restricting the displacement of the mountain portion in the direction opposite to the displacement. The engagement between the groove and the mountain portion, that is, the engagement of the band portion 2b with the head portion 2a prevents the band portion 2b from being pulled out from the head portion 2a (engagement hole 4) of the tie band 2, and the wire harness 1 Is fixed to the vehicle body 3.

The first protruding portion 2c forming the end portion of the band portion 2b is inserted into the engaging hole 4 of the head portion 2a and protrudes in a direction away from the head portion 2a (left direction in FIG. 1). .. The head 2a of the tie band 2 is provided with a second protruding portion 5 that protrudes in the same direction as the first protruding portion 2c. The second protruding portion 5 is formed in a square tubular shape so as to surround the periphery of the first protruding portion 2c of the band portion 2b. Further, the second protruding portion 5 is formed so as to be able to expand and contract in the protruding direction with respect to the head 2a. Specifically, the second protruding portion 5 is formed of a material that is more easily elastically deformed than the head portion 2a, for example, an elastomer.

As shown in FIG. 2, the tubular second protruding portion 5 is provided so as to surround the four peripheral surfaces of the head 2a formed in a rectangular parallelepiped shape, that is, both the upper and lower surfaces and the widthwise both surfaces, and the four surfaces thereof. Is stuck to. The tie band 2 having such a head portion 2a and a second protruding portion 5 is manufactured by a manufacturing method in which the head portion 2a and the second protruding portion 5 are formed by two-color molding. According to such a manufacturing method, in the tie band 2 provided with the head 2a made of different materials of resin and elastomer and the second protruding portion 5, the head 2a and the second protruding portion 5 can be easily formed through the two-color molding. Will be formed.

Next, the action of the tie band 2 will be described.
As shown in FIG. 3, in order to fix the wire harness 1 to the vehicle body 3 using the tie band 2, the band portion 2b of the tie band 2 is inserted into the engagement hole 4 of the head 2a of the tie band 2. At that time, the first protruding portion 2c (lower end portion in FIG. 4), which is the tip portion of the band portion 2b in the insertion direction, greatly protrudes from the head portion 2a. Then, the first protruding portion 2c is excised leaving a cutting allowance of a predetermined length.

The cutting of the first protruding portion 2c of the band portion 2b in the tie band 2 is performed by using the band cutter 6 shown in FIG. By pressing the tip of the band cutter 6 against the second protruding portion 5, the second protruding portion 5 is elastically deformed so as to contract in the direction approaching the head portion 2a. Further, the band cutter 6 is in contact with the second protruding portion 5 which has been shrunk as described above, and while gripping the first protruding portion 2c of the band portion 2b, the band cutter 6 has a first portion thereof. The protruding portion 2c can be excised leaving a cutting allowance L1 having a predetermined length. It should be noted that the reason why the cutting allowance L1 having a predetermined length is left in the first protruding portion 2c of the band portion 2b in this way is that the force in the extraction direction from the same head portion 2a acts on the band portion 2b otherwise. This is because when the band portion 2b is displaced from the head portion 2a in the extraction direction, the engagement between the groove portion and the mountain portion may be weakened and the band portion 2b may be extracted from the head portion 2a.

When the first protruding portion 2c of the band portion 2b is excised as described above, the second protruding portion 5 is elastically deformed so as to contract in the direction approaching the head portion 2a, so that the second protruding portion 5 is formed. It is possible to suppress the obstruction to the excision of the first protruding portion 2c of the band portion 2b. Further, after the first protruding portion 2c of the band portion 2b is excised, the second protruding portion 5 returns to the original position as shown in FIG. 5 by its own elasticity, so that the second protruding portion 5 becomes the head. It is displaced so as to extend in a direction away from the portion 2a, and is in a state of protruding with respect to the head portion 2a from the portion of the cutting allowance L1 in the first protruding portion 2c of the band portion 2b. As a result, the portion of the cutting allowance L1 in the first protruding portion 2c of the band portion 2b is surrounded by the second protruding portion 5 and is less likely to come into contact with the operator or other parts.

According to the present embodiment described in detail above, the following effects can be obtained.
(1) In the tie band 2, the first protruding portion 2c of the band portion 2b inserted into the engaging hole 4 of the head portion 2a can be easily cut off leaving a cutting allowance L1 of a predetermined length. It is possible to prevent the portion of the cutting allowance L1 from coming into contact with the operator or other parts.

(2) In the tie band 2, the second protruding portion 5 is formed in a tubular shape so as to surround the circumference of the first protruding portion 2c of the band portion 2b. Therefore, when the first protruding portion 2c of the band portion 2b inserted through the head portion 2a of the tie band 2 is excised leaving a cutting allowance L1 having a predetermined length, the circumference of the cutting allowance L1 is surrounded by the second portion. It can be surrounded by the protrusion 5. Therefore, the portion of the cutting allowance L1 in the first protruding portion 2c of the band portion 2b becomes more difficult to come into contact with the operator or other parts by the second protruding portion 5.

(3) The second protruding portion 5 is formed of a material that is more easily elastically deformed than the head portion 2a. Therefore, when the first protruding portion 2c of the band portion 2b inserted through the head 2a of the tie band 2 is excised leaving a cutting allowance L1 of a predetermined length, the second protruding portion 5 approaches the head 2a. It can be easily contracted by elastic deformation in the direction. Further, after the first protruding portion 2c of the band portion 2b is excised as described above, the second protruding portion 5 extends in the direction away from the head 2a due to its own elasticity, so that the first protruding portion 2c of the band portion 2b The portion of the cutting allowance L1 in the above is easily surrounded by the second protruding portion 5.

(4) Since the head 2a and the second protruding portion 5 of the tie band 2 are formed by using two-color molding, the second protruding portion 5 and the head are made of a material that is more easily elastically deformed than the head 2a. 2a and 2a can be easily formed.

The above embodiment can be changed as follows, for example. The above embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-In the tie band 2, in order to fix the second protruding portion 5 made of a material different from the head 2a to the same head 2a, the head 2a and the second protruding portion 5 are formed by two-color molding. The present invention is not limited to this. That is, the second protruding portion 5 may be fixed to the head portion 2a by a method other than the two-color molding.

-The second protruding portion 5 does not necessarily have to be fixed to the head 2a. That is, as shown in FIG. 6, the second protruding portion 5 may be attached to the head portion 2a. In this case, when the second protruding portion 5 is attached to the head 2a, it is conceivable that the claw portion 7 formed on the head 2a prevents the second protruding portion 5 from coming off the head 2a.

-Although the elastomer is exemplified as the material for forming the second protruding portion 5, the second protruding portion 5 may be formed of any other material.
-The second protruding portion 5 does not necessarily have to be tubular. For example, a shape in which a part of the second protruding portion 5 is cut out is formed, for example, a slit extending in the same direction as the portion inserted into the engaging hole 4 of the band portion 2b is formed in the second protruding portion 5. It is also possible to adopt it.

-The second protruding portion 5 may be formed integrally with the head 2a by using the same material as the head 2a. In this case, a bellows portion may be formed in the second protruding portion 5, and the bellows portion may allow the second protruding portion 5 to expand and contract in the protruding direction with respect to the head 2a.

-Although the tie band 2 was used for fixing the wire harness 1 to the vehicle body 3, it may be used for binding the wire harnesses 1 to each other.

1 ... Wire harness, 2 ... Tie band, 2a ... Head, 2b ... Band, 2c ... First protrusion, 3 ... Body, 4 ... Engagement hole, 5 ... Second protrusion, 6 ... Band cutter, 7 … Claws.

Claims (4)

It is provided with a head having an engaging hole and a band portion extending from the head, and the band is looped and inserted into the engaging hole of the head to be extracted from the engaging hole. In the tie band that is engaged with the head so that it is not
The band portion has a first protruding portion that is inserted into the engaging hole and projects in a direction away from the head.
The tie band has a second protruding portion provided on the head and protruding in the same direction as the first protruding portion.
The second protruding portion is a tie band formed so as to allow expansion and contraction in a protruding direction with respect to the head. The tie band according to claim 1, wherein the second protruding portion is formed in a tubular shape so as to surround the periphery of the first protruding portion. The tie band according to claim 1 or 2, wherein the second protruding portion is formed of a material that is more easily elastically deformed than the head. A head having an engaging hole, a band portion that extends from the head and is engaged with the head so as not to be pulled out from the engaging hole by being inserted into the engaging hole, and the band portion. A first protruding portion that is inserted through the engaging hole and protrudes in a direction away from the head, and a second protruding portion provided in the head so as to protrude in the same direction as the first protruding portion. Applies to tie bands with
A method for producing a tie band, which comprises forming the second protruding portion made of a material that is more easily elastically deformed than the head and the head by two-color molding.