JP2000270448A - Wire harness attaching band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce force required for pulling the main body of a wire harness attaching band, and at the same time, to surely maintain the band in a locked state. SOLUTION: A wire harness attaching band is provided with a band main body 12 having a locking groove 12a, a locking piece 14 which has a locking click 14a and a position regulating click 14b and is movably installed to a band locking section 13 via flexible sections 16-1 and 16-2, and a regulating frame 18 which regulates the vertical position of a the locking piece 14 by coming into contact with the position regulating click 14b and is protruded from the band locking section 13. At tightening the band main body 12, the locking piece 14 moves in the inserting direction of the band main body 12 and upwards, and if a load is applied to the locking piece 14 in the separating direction of the piece 14 after the main body 12 is locked, the piece 14 is made to move in the separating direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band for attaching a wire harness, and more particularly, to reducing the tightening force of the band main body required when the band main body is locked, and firmly fixing the wire harness in the locked state. Things.

[0002]

2. Description of the Related Art A wire harness is routed and fixed to the body of an automobile to connect various electric devices to be mounted, and a wire harness mounting band is provided at a fixed portion of the wire harness. May be used.

A conventional band 1 for attaching a wire harness shown in FIGS. 6 (A) and 6 (B) has a band body 2 having a sawtooth-shaped locking groove 2a on one side surface, and a continuous band at one end of the band body 2. It is composed of a band lock section 3 having an insertion hole 3a. The band lock portion 3 has a locking piece 4 having a locking claw 4a projecting from an upper inner surface of the insertion hole 3a, and a clip portion 5 protruding from the upper surface 3b.

[0006] As shown in FIG. 6 (C), in order to fix the wire harness W / H to the vehicle body panel P with the wire harness mounting band 1, the band main body 2 is connected to the wire harness W.
/ H, and the tip is inserted into the insertion hole 3a of the band lock portion 3 and pulled to a required position.
Wire harness W / H locked by band lock unit 3
Has been concluded. After that, the insertion hole 3 of the band lock portion 3
a, the clip part 5 is inserted into the through hole Pa of the vehicle body panel P, and the wire harness W / H is inserted into the vehicle body panel P.
Is fixed to

[0005] The regulation of the movement direction by the locking piece 4 when the band body 2 is inserted and after it is fixed is as shown in FIG.
When the band body 2 is pulled in the direction of arrow A in the figure,
When the locking claw 4a comes into contact with the locking groove 2a, the free end 4d is bent upward with the fixed side 4c of the locking piece 4 as a fulcrum, and the locking claw 4a gets over the locking groove 2a. A
The movement of the band body 2 in the direction is enabled. Further, even if a load such as pulling is applied to move the band main body 2 in the direction of detaching (the direction of arrow B in the figure), the locking claw 4a
And the locking groove 2a is locked by engagement of the vertical portions thereof, so that the band body 2 is prevented from returning. In some cases, the plate thickness t of the fixed side 4c of the locking piece 4 may be slightly thinner than other portions to make the locking piece 4 easily bendable.

[0006]

SUMMARY OF THE INVENTION Wire harness W / H
In the routing work shown in FIG. 8, in order to route the wire harness W / H to a required location, a tensile load or the like is applied to the wire harness W / H.
(A), the wire harness mounting band 1 previously fixed to the vehicle body panel P may be subjected to a tensile load or the like in the direction of the arrow F which is a vertical direction with respect to the vehicle body panel P. After the wire harness W / H is fixed, a load may be applied in the direction of arrow G, which is vertically downward, due to vibration of the vehicle body or gravity.

When a load is applied in the directions indicated by the arrows F and G, a stress is applied to the band body 2 in a detaching direction, and when the load indicated by the arrow F or the like is large, as shown in FIG. There is a case where the fixed side 4c of the locking piece 4 bends upward, or a tip of the locking claw 4a or the like warps. In this case, there is a problem that the engagement between the locking claw 4a and the locking groove 2a is loosened, and the band main body 2 returns. Further, when the load is further increased and exceeds the strength of the locking piece 4 and the locking claw 4a, the fixed side 4c of the locking piece 4 and the locking claw 4a
a may be damaged.

In order to prevent the band body 2 from returning and the locking piece 4 from being damaged, the thickness and width of the fixed side 4c of the locking piece 4 are increased, and the height of the locking claw 4a is reduced. Raise it,
It is conceivable to improve the rigidity of the locking piece 4 and the engagement force between the locking claw 4a and the locking groove 2a. However, when the band body 2 is inserted into the insertion hole 3a of the band lock portion 3 and then pulled, the free end side 4d of the locking piece 4 is less likely to bend, and the locking claw 4a and the locking groove 2a are formed. Are firmly engaged with each other, so that an excessive force is required for pulling the band main body 2, and there is a problem that the locking workability of the band main body 2 is greatly reduced.

The present invention has been made in view of the above-described problems, and does not cause the band body to return or break the locking pieces even when various loads are applied after the wire harness is locked and fixed. The first task is to surely maintain the locked state. A second object is to reduce the pulling force of the band main body required for locking the band main body to the band lock portion and easily lock the band main body.

[0010]

In order to solve the above-mentioned problems, the present invention is to insert a tip of a band body wound around an outer periphery of a wire harness into an insertion hole of a band lock portion provided at the other end of the band body. A band attached to a vehicle body panel or the like of a vehicle by a clip portion protruding from the band lock portion, wherein the band body has a continuous sawtooth-shaped locking groove on one surface side, and the band lock The part has a locking claw for locking with the locking groove on one surface, and a locking piece having a position regulating claw provided on the other surface on the back side so as to be movable via a flexible part, and A restricting frame that contacts the restricting claw and regulates the position of the movable locking piece protrudes from the outer surface. When the band body is inserted into the insertion hole of the band lock portion, the locking piece is In the direction of insertion After the free end side of the piece moves upward, after the band main body is fixed, the locking piece moves by the restoring force of the flexible portion so that the position regulating claw of the above-mentioned locking piece abuts within the regulation frame and fits. A wire harness mounting band is provided in which the locking piece moves in the detaching direction when a load is applied to the main body in the detaching direction.

By providing the locking claw and the position regulating claw on the movable locking piece as described above, when the band body is inserted into the insertion hole of the band lock portion, the locking groove and the locking piece of the band body are used. When the locking claw abuts, the locking piece moves in the insertion direction of the band body. By this movement, the position regulating claw of the locking piece comes off from the restriction frame, and the locking piece moves upward following the contact surface of the sawtooth-shaped locking groove. Due to the upward movement of the locking piece, the engagement area between the locking claw and the locking groove is reduced, the resistance of the locking claw can be reduced, the force required for pulling the band main body is reduced, and the band main body is easily moved. Insertion and pulling work can be performed.

When the pulling force is released after the band body is pulled to the required position, the locking piece is pulled back to the original position by the restoring force of the flexible portion continuous with the locking piece.
Since the position regulating claw is fitted inside the regulating frame and presses the locking claw against the locking groove, the locking claw and the locking groove are securely engaged, and the band body can be firmly locked.

Further, when a load is applied in the detaching direction of the band main body in the locked state of the band main body, the locking piece receives the load and moves in the load direction, and the stress acting on the locking piece and the locking claw is exerted. Can prevent damage to the locking pieces and the like. In addition, the movement of the locking piece in the load direction is performed in a state where the locking piece and the locking groove are securely engaged, so that the band main body does not return.

[0014] The locking piece is disposed with a gap around the inside of the recessed part of one side of the band lock part, and one end of each of the flexible parts protruding from both sides on the closed side of the recessed part. The engaging piece is continuous with both corners of the end portion facing the closed side of the concave portion. By locating the locking piece in the cutout recess of the band lock portion in this way, the locking piece can be engaged with the locking claw and the locking groove of the band body without increasing the size of the band lock portion. It can be arranged so as to have a positional relationship suitable for matching. In addition, by providing a gap around the locking piece, even if the locking piece moves, no interference occurs and smooth movement can be performed. Furthermore, by moving both corners of the end of the locking piece on the closed side of the concave portion with the flexible portion, the movement of the locking piece can be performed stably.

[0015] Further, at least two of the locking claws are provided continuously, and a position regulating claw having an inclined surface abutting on the regulating frame is provided directly behind the center position in the continuous direction. Is preferred. Providing a plurality of locking claws in this way increases the number of locations where the locking claws are engaged with the locking grooves, so that the lock can be strengthened. In addition, by providing a position regulating claw directly behind the center position of these locking claws which are continuous in the same direction as the locking groove of the band main body, the force pressing the locking piece downward by contact with the restriction frame is dispersed. Since it is transmitted to the locking claw in the vertical direction without causing the locking, the lock by the engagement can be further strengthened. Furthermore, by inclining the surface of the position regulating claw that comes into contact with the regulating frame with the free end side of the locking piece as the high position side, the position regulating claw is removed from the regulating frame,
When returning to the state of contact with the restriction frame, the resistance due to the contact is reduced, and the vehicle can move more smoothly.

Further, according to the present invention, the locking groove of the band main body is provided on an outer surface which becomes an outside in a state where the band main body is wound around the wire harness, and the locking piece and the regulating frame are provided on an upper surface side of the band lock portion. Is provided. As described above, in accordance with the provision of the locking groove of the band main body on the outer surface, the locking piece and the like are provided on the upper surface side of the band lock portion which is not easily interfered by the base side portion of the band main body, so that the band main body of the band main body is provided. Fastening workability can be improved, and molding of the wire harness mounting band itself can be facilitated.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 (A) and 1 (B) show a band 10 for attaching a wire harness of the present invention. The band 10 for attaching a wire harness is formed of a resin, and a band body 12 and a band body 12 are wound around the outer periphery of the wire harness.
Is mainly constituted by a band lock portion 13 having an insertion hole 13a for inserting the. The band lock portion 13 has a clip portion 15 and a regulating frame 18 protruding from an upper surface 13b, and has a locking piece 14 having a locking claw 14a and a position regulating claw 14b.

The band body 12 has an overall length that can sufficiently cope with the outer dimensions of the wire harness W / H to be fixed, and becomes outside when wound around the wire harness W / H. Serrated locking groove 12 continuous on outer surface
a is provided. A cross section of the locking groove 12a in the longitudinal direction of the band body 12 is, as shown in FIG.
The triangular groove composed of b and the vertical surface 12c has a continuous shape.

The band lock portion 13 which is continuous with the base portion side of the band main body 12 has a substantially rectangular parallelepiped shape, and has a height and a width which allow the band main body 12 to be inserted from one end surface to the other end surface. A hole 13a is provided. On the side of the upper surface 13b of the band lock portion 13 facing the clip portion 15, a concave portion 13c is provided by notching from the end. The concave portion 13c is cut out to such a size that gaps 17-1 to 17-3 are formed around the locking piece 14 even when the locking piece 14 is disposed inside.

As shown in FIGS. 2A and 2B, the locking piece 14 is connected to one end of each of flexible portions 16-1 and 16-2 protruding from the vicinity of both corners on the closed side of the recess 13c. The stop piece 14 is positioned inside the concave portion 13c by being continuous with both corners of the end portion on the fixed side 14c. The flexible portions 16-1 and 16-2 can swing and bend around the base protruding from the recess 13c, and have sufficient strength to cope with the load applied to the locking piece 14. At the same time, it also has a restoring force that returns from the bent state. By moving both corners of the locking piece 14 to the flexible portions 16-1 and 16-2 in this manner, the movement of the locking piece 14 is stabilized, and by providing gaps 17-1 to 17-3 around the circumference. , Locking piece 14
No interference or the like occurs at the time of the movement, and the smooth movement of the locking piece 14 is ensured.

Locking claw 14a provided on locking piece 14
Are provided on the free end 14d side of the lower surface 14e of the locking piece 14 so as to be continuous in the same direction as the continuous locking groove 12a of the band body 12. The locking claw 14a has a shape in which a triangular shape consisting of a slope 14i and a vertical surface 14j projects corresponding to the locking groove 12a of the band body 12. The locking claw 14
The claw height a is set to be equal to or less than the groove depth of the locking groove 12a.

A position regulating claw 14b is provided on an upper surface 14f which is a back surface of the lower surface 14e of the locking piece 14.
Specifically, the position regulating claw 14b is located vertically above the center position 14g of the two consecutive locking claws 14a. The upper surface of the position regulating claw 14b is
4 has a free end side 14d that is high and a fixed side 14c that is pulled to form a slope 14h. By providing the position restricting claw 14b as described above, the force for pressing the position restricting claw 14b downward by contacting the slope 14h of the position restricting claw 14b of the restricting frame 18, which will be described later, reduces the locking claw located immediately below. 14a can be transmitted linearly. In order to ensure the contact with the regulating frame 18, a horizontal surface may be provided at the top of the slope 14h to increase the contact area.

The restricting frame 18 has a rigidity that can cope with various stresses and the like.
3c so that the apex of the slope 14h of the position regulating claw 14b abuts on the lower surface 18a of the regulating frame 18 in a state where no load is applied to the locking piece 14 so as to straddle the upper surface 13b of the band lock portion 13. Both ends are fixed and projected.
The dimension from the lower surface 18a of the regulating frame 18 to the upper surface 14f of the locking piece 14 when no load is applied is set to be equal to the height of the position regulating claw 14b.
4b is in contact with the lower surface 18a of the regulating frame 18,
The locking piece 14 is securely pressed downward.
Further, the width of the regulating frame 18 is set to such a size that the contact of the position regulating claw 14b does not come off even when the locking piece 14 moves in the detaching direction of the band body 12 as described later.

In order to attach the wire harness W / H to the vehicle body panel P using the above-mentioned wire harness attachment band 10, a band lock portion is provided from the tip with the band main body 12 wound around the outer periphery of the wire harness W / H. 13, the tip of the band main body 12 is pulled from the other end side.

By inserting the band main body 12 as described above, the locking groove 12a of the band main body 12 and the locking claw 14a of the locking piece 14 are engaged as shown in FIG. By pulling the tip of the band main body 12 in the direction of arrow A in the figure from the state, the band main body 12 moves in the direction A as shown in FIGS. Flexure 16
When -1, 2 bends, the tracing moves in the A direction. With this movement, the position regulating claw 14b comes off the regulating frame 18,
When the band body 12 is further pulled in the direction A, the locking groove 1
The free end side 14d of the locking piece 14 is lifted up by the slope 14i of the locking claw 14a following the slope 12b of 2a, and the engaging portion between the locking claw 14a and the locking groove 12a is greatly reduced.

In the above state, since the engagement portion is small, the resistance due to the engagement between the locking claw 14a and the locking groove 12a is greatly reduced, and the force required for pulling the band body 12 in the A direction can be reduced. The labor burden of the worker can be reduced.

After the band main body 12 is pulled to a required position corresponding to the outer diameter of the wire harness W / H in this way, when the pulling force is released, the locking pieces 14 become flexible portions 16-1, 2 Is intended to return to the original position in the direction of arrow B in the figure. Due to this return, the position regulating claw 14
Since the inclined surface 14h moves in the direction B in contact with the outer end portion 18b of the lower surface 18a of the regulating frame 18, the locking piece 1
4 moves in the direction B while being pressed downward, and FIG.
(A) It has returned to the original position shown in (B). In this state, since the position regulating claw 14b is in contact with the lower surface 18a of the regulating frame 18, the locking piece 14 is pressed vertically downward, and the engagement between the locking claw 14a and the locking groove 12a is ensured. The wire harness W / H can be securely locked.

After locking as described above, the unnecessary band main body 12 is cut, and the clip portion 15 is inserted and locked in the through hole Pa of the vehicle body panel P, thereby connecting the wire harness W / H to the vehicle body panel P. Attached to.

Next, the wire harness W / H is connected to the vehicle body panel P by the wire harness attaching band 10 as described above.
4 (A) and 4 (B) on the band main body 12 due to the wiring work of the wire harness W / H, vibration, etc.
As shown in the figure, when a load is applied in the direction of arrow B, which is the detaching direction, the vertical surface 12c of the locking groove 12a and the locking claw 14
The vertical surface 14j of a is engaged, and a stress in the B direction is applied to the locking piece 14. Under this stress, the locking piece 14 is moved to the flexible portion 16-
It moves in the B direction due to the bending of 1 and 2. At this time, there is a gap 1 between the locking piece 14 and the concave portion 13c of the band lock portion 13.
Because of the provision of 7-3, the locking piece 14 can move in the B direction by the width of the gap 17-3. Due to this movement, the stress caused by the load applied in the detaching direction of the band main body 12 is absorbed and the breakage of the locking piece 14 is prevented.

In the above movement, since the position regulating claw 14 is always in contact with the lower surface 18a of the regulating frame 18, the engaging claw 14a and the engaging groove 12a are securely engaged, and the band body 12 does not return in the direction B, and the tips of the locking claws 14a and the like are prevented from warping.

The wire harness mounting band 10
The present invention is not limited to the above-described embodiment, and the positions of the locking pieces 14 and the clip portions 15 provided on the band lock portion 13 may be appropriately changed. The locking groove 12 of the band body 12
a is provided on the winding side of the wire harness W / H, and the locking piece 14 and the regulating frame 18 are attached to the band lock portion 1.
3 may be provided on the lower surface side. Further, as shown in FIG. 5, a bent portion 16a-1 'is formed on a part of the flexible portions 16-1' and 16-2 'protruding from the band lock portion 13'.
16a-2 'is provided to move the locking piece 14'.
The flexible portions 16-1 'and 16-2' bend and the bent portion 16
a-1 ', 16a-2' may be extended so that the locking piece 14 'can move more smoothly.

[0032]

As is apparent from the above description, by using the wire harness mounting band of the present invention in which the locking pieces move forward and backward, the pulling force required when the wire harness is locked by the band body is reduced. It is possible to reduce the labor involved in the fastening work of the operator. Also, after the wire harness is fixed to the vehicle body panel by the wire harness mounting band, even if a load is applied to the band body in the detaching direction due to various loads, the stress is released by the movement of the locking piece, so that the locking piece and the like can be removed. Damage can be prevented. Further, even during this movement, the locking claw of the locking piece and the locking groove of the band main body are securely engaged by the position control claw and the control frame, so that the lock of the band main body can be firmly maintained. .

[Brief description of the drawings]

FIG. 1 is a wire harness mounting band of the present invention, wherein (A) is an overall perspective view and (B) is an enlarged perspective view of a main part.

FIG. 2 shows a no-load state after the insertion of the band body,
(A) is an enlarged plan view of a main part, and (B) is X- in (A).
It is X sectional drawing.

3A and 3B are tension states of the band main body in a fastening direction, wherein FIG. 3A is an enlarged plan view of a main part, FIG. 3B is a sectional view taken along line XX in FIG. 3A, and FIG.

FIG. 4 is a diagram showing a load state in a detaching direction of the band body,
(A) is an enlarged plan view of a main part, and (B) is X- in (A).
X is a cross-sectional view, and FIG.

FIG. 5 is an enlarged plan view of a main part of a wire harness mounting band according to a modification.

FIG. 6 is a conventional wire harness mounting band,
(A) is an overall perspective view, (B) is an enlarged perspective view of a main part, (C)
FIG. 3 is a perspective view showing a state of attachment to a vehicle body panel.

FIG. 7 is a cross-sectional view of a main part of a conventional wire harness mounting band in a pulled state of a band body.

FIG. 8A is a schematic view showing a load applied to a wire harness mounting band in a state of being fixed to a vehicle body panel;
(B) is a sectional view of a main part showing a problem.

[Explanation of symbols]

 1, 10 Wire harness mounting band 2, 12 Band body 2a, 12a Lock groove 3, 13 Band lock portion 4, 14 Lock piece 4a, 14a Lock claw 14b Position control claw 16-1, 16-2 Flexible Part 18 regulatory framework

Claims (4)

[Claims] An end of a band main body wound around an outer periphery of a wire harness is inserted into an insertion hole of a band lock section provided at the other end of the band main body and locked, and a clip section protruding from the band lock section is used. A band attached to a vehicle body panel or the like of a vehicle, wherein the band main body includes a continuous serrated locking groove on one surface side, while the band lock portion includes a locking claw that locks with the locking groove on one surface. A locking piece having a position regulating claw is provided on the other surface on the back side so as to be movable via a flexible portion, and abuts on the position regulating claw to move the position of the movable locking piece. When the regulating frame to be regulated protrudes from the outer surface and the band body is inserted into the insertion hole of the band lock portion, the locking piece moves in the insertion direction of the band body and the free end side of the locking piece faces upward. Move to and after fixing the band body When the load is applied to the band body in the detaching direction by moving the locking piece so that the position restricting claw of the locking piece abuts within the restriction frame due to the restoring force of the flexible portion, the locking piece is The wire harness mounting band is configured to move in the detaching direction. 2. The locking piece is disposed in a concave portion formed by cutting out one surface of the band lock portion with a gap around it, and one end of each of flexible portions protruding from both sides on the closed side of the concave portion. The band for attaching a wire harness according to claim 1, wherein the band is continuous with both corners of an end portion of the locking piece facing the closed side of the concave portion. 3. The at least two locking claws are provided continuously, and a position regulating claw having an inclined surface abutting on the regulating frame is provided directly behind the center position in the continuous direction. The wire harness mounting band according to claim 1 or 2, wherein: 4. The locking groove of the band main body is provided on an outer surface which is outside when the band main body is wound around a wire harness, and the locking piece and the regulating frame are provided on the upper surface side of the band lock portion. The wire harness mounting band according to any one of claims 1 to 3, wherein: