JP2011155819A - Band type clamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a band type clamp for a wire harness, capable of reducing a projecting height of the clamp. <P>SOLUTION: The band type clamp includes a box-shaped body 2, a car-body engager 4 projected from the external surface of the box-shaped body 2, and a band 3 extended from the edge of one-side opening of a through-hole 6 formed to the body 2. The band is continuously provided with engaging grooves 7A and 7B along the longitudinal direction at both side edges in the width direction, and at the same time, engaging pieces 12A and 12B facing the through-hole are formed on both sidewalls in the width direction of the body 2 for side lock. Projections 10A and 10B extended in the longitudinal direction are formed at intermediate positions in the width direction of the band while recesses 14A and 14B for guides fitted to the projections or the projections for the guides fitted to the recesses are formed to an upper wall or a lower wall surrounding a band-inserting side opening. A central position in the width direction of the band inserted into the band through-hole and a central position in the width direction of the body are aligned to hold the band. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a band-type clamp, and more particularly, is used for binding a wire group of a wire harness to be wired to an automobile and fixing it to a vehicle body panel, and in particular, to be routed in a narrow wire harness wiring space. It is suitably attached to a wire harness.

2. Description of the Related Art Conventionally, a band-type clamp is attached to a wire harness in order to route a wire harness composed of a bundle of electric wires to an automobile and fix the wire harness to a vehicle body panel or the like at a required position.
The band-type clamp C which is widely used has a shape shown in FIGS. 10A, 10B, and 10C, and has a blade shape from the outer surface of the upper wall of the box-shaped main body 101 projecting the band 100 through the dish portion 102a. The vehicle body locking portion 102 is projected. The vehicle body locking portion 102 has a blade 102c protruding from the tip of the support portion 102b in a folded shape, and a locking step 102d is provided at the tip of the blade 102c. The band 100 is provided with a locking groove 103 continuously on one surface in the width direction, while a main body 101 is provided with a band through hole 105, and the inner surface (or lower wall inner surface) of the upper wall 101 a of the main body 101 surrounding the band through hole 105. A locking piece 106 protrudes in the vertical direction from and is locked in the locking groove 103 of the band 100 and fastened.

  As shown in FIG. 10C, in the state where the band-type clamp is attached to the vehicle body panel P, the distance a from the vehicle body panel P to the center O of the wire harness 120 is the dimension in the axial direction of the dish portion 102a, and the main body 101. The distance a is relatively large because the upper wall thickness, the protruding dimension of the locking piece 106, the thickness of the band 100, and the lower wall thickness of the main body 101 are combined with the radius of the wire harness. Therefore, it is necessary to provide a wiring harness wiring space that can secure this distance a along the vehicle body panel.

  11A and 11B, when the wire harness W / H is a door harness routed in the space S between the inner panel 200 and the trim 201 of the door D, the width of the space S is Since it is very narrow, it does not provide a wiring space required for the band-type clamp, and a door harness to which the band-type clamp is attached cannot be routed.

In order to reduce the height of the band-type clamp, the present applicant has proposed a side-lock type band clamp in Japanese Patent Application Laid-Open No. 11-79233.
As shown in FIGS. 12A and 12B, the side lock type band clamp has locking pieces 212 protruding from inner surfaces on both sides of the through hole 211 of the main body 210, and locking grooves 216 on both side end surfaces of the band 215. The height of the main body 210 is reduced.

  In the side lock type band clasp, as shown in FIGS. 13A, 13B, and 13C, the lock piece 212 is bent outward when the band 215 is pulled through the through hole 211 in the direction of the arrow. The piece 212 is relatively easily bent outward. As shown in FIG. 13C, when the band pulling direction is even a little oblique and “squeezing” occurs, the lock piece 212 inserted and locked in the locking groove 216 of the band 215 bends outward, There is a problem of being locked in a state where it is easy to come off.

Japanese Patent Laid-Open No. 11-79233

  The present invention has been made in view of the above problems, and uses a side lock band-type clamp to reduce the protruding height of the clamp so that the wire harness can be routed in a narrow space. It is an object of the present invention to eliminate the occurrence of “twisting” due to the band pulling direction that occurs in the mold clamp, and to make it difficult to release the lock.

In order to solve the above-mentioned problem, the present invention is a band-type clamp made of a resin molded product that is wound around the outer periphery of a plurality of electric wires and bound as a group of electric wires, and that fixes the electric wires to the vehicle body, And a vehicle body locking portion protruding from the outer surface of the main body, and a band extending from the edge of one side opening of the band through hole provided in the main body,
The band is provided with a locking groove continuously along the length direction on both side edges in the width direction, while a locking piece is provided on the inner surface facing the band through-hole of both side walls in the width direction of the main body, It is configured to side lock the band to be locked with the band locking groove,
And the convex part or recessed part extended in a length direction is provided in the intermediate position of the width direction of the said band, On the other hand, the recessed part for a guide fitted with the said convex part on the upper wall or lower wall surrounding the said band insertion side opening or Provided is a band-type clamp that is provided with a guide convex part that fits into the concave part, and that can hold the center position in the width direction of the band inserted through the band through-hole and the center position in the width direction of the main body. is doing.

  As described above, in the band-type clamp of the present invention, in order to prevent the occurrence of “twisting” in an oblique direction when the band is inserted into the through hole of the main body, the band-type clamp extends in the length direction on the band side. On the other hand, a guide recess or projection that fits into the projection or recess is provided on the main body side. When passing the band through the through hole of the main body, insert the convex part of the band into the concave part for guide (or insert the convex part for guide into the concave part of the band), and the width direction center of the band and the width direction center of the main body By pulling the band through the through-hole in a state where the positions are aligned, it is possible to reliably prevent the occurrence of “twisting” caused by the pulling of the band in the oblique direction.

  Specifically, two or more protrusions are provided on the surface that becomes the outer peripheral surface when the band is wound around the electric wire group with a gap in the width direction, while the protrusions are formed on the lower surface of the upper wall of the main body. It is preferable that a guide wall portion provided with a plurality of recesses to be fitted with is protruded and the vehicle body locking portion is protruded on the upper surface of the upper wall of the main body.

  As described above, in the present invention, the band-type clamp is used as a side lock, so that the protrusion height of the clamp can be lowered, and it can be applied to a door harness with a narrow wiring space. The problem that the lock is easily released due to easy “squeezing” is solved by providing the band and the main body with a concavo-convex portion that fits each other so that the band cannot be pulled obliquely. Therefore, it can be set as the band type clamp of a side lock with high attachment reliability to a wire harness.

It is a perspective view of a band type clamp of a first embodiment of the present invention. (A) is the front view of the said band type clamp, (B) is the principal part enlarged view of (A), (C) is CC sectional view taken on the line of (A). It is sectional drawing of the main body of a band type clamp. It is sectional drawing of the state which wound the band around the electric wire group of the wire harness. It is a front view of the state which inserted the band in the through-hole of the main body. It is drawing which shows the state which latched the locking groove of the band with the locking piece of the main body. The 1st modification of 1st embodiment is shown, (A) is a front view, (B) is the BB sectional drawing of (A). The 2nd modification of 1st embodiment is shown, (A) is a front view, (B) is the BB sectional drawing of (A). A 2nd embodiment is shown, (A) is a front view of a main part, and (B) is a sectional view showing the winding state of the band to a wire harness. (A) (B) (C) is drawing which shows a prior art example. The problem at the time of attaching a band type clamp to a door harness is shown, (A) is a schematic diagram of the whole door, and (B) is a B arrow expanded sectional view of (A). (A) (B) is drawing which shows the other conventional example of a side lock type. (A), (B), and (C) are drawings for explaining problems of the side lock type.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show a band-type clamp according to the first embodiment.
The band-type clamp 1 is made of a resin molded product, and integrally includes a band locking main body 2, a band 3 protruding from the main body 2, and a vehicle body locking portion 4.

  The band-locking main body 2 has a box shape with through holes 6 in the front-rear direction X in the figure, which is the protruding direction of the band 3, and the left and right side walls 2a, 2b, the bottom wall 2c and the upper wall 2d are through holes. 6 is formed in a box surrounding. The other side opening of the through hole 6 is a band inlet 6a, and the one side opening is a band outlet 6b. A band 3 is projected from the bottom wall on the band outlet 6b side.

The band 3 is provided with locking grooves 7A and 7B that are continuous in the length direction on both end faces in the width direction.
Further, guide protrusions 10A and 10B that are continuous in the length direction are provided on the surface 3a of the band 3 that is an outer peripheral surface that is not in contact with the wire harness when the band is wound around the wire harness with a gap in the width direction. is doing. On the inner peripheral surface that comes into contact with the wire harness, a non-slip protrusion 11 is provided at an interval in the length direction.

On the other hand, locking pieces 12A and 12B protruding from the inner surfaces of the left and right side walls 2a and 2b of the main body 2 are provided so as to protrude into the through holes 6, and are respectively formed in the locking grooves 7A and 7B on both end surfaces in the width direction of the band 3. The band 3 is locked and side-locked.
The protruding positions of the locking pieces 12A, 12B are intermediate positions in the front-rear direction of the left and right side walls 2a, 2b.

  Further, a guide wall 13 projecting downward from the upper wall 2d is provided on the band inlet 6a side of the through hole 6 of the main body 2, and a pair of guides are spaced from the lower end of the guide wall 13 in the width direction. Recesses 14A and 14B are provided. The guide recesses 14A and 14B are provided so that the projections 10A and 10B provided on the band 3 inserted into the through hole 6 are just fitted, and the center in the width direction of the band 3 is the width of the main body 2 in the fitted state. It is set to coincide with the center of the direction.

  The vehicle body locking portion 4 protrudes from the upper wall 2d of the main body 2. Specifically, the dish part 5 is projected from the upper wall 2d, and the support shaft parts 4a and 4b projecting from both sides on the long axis side of the bottom part 5a of the dish part 5, and the support shaft parts 4a and 4b A connecting portion 4c for connecting the tips and a pair of blade portions 4d, 4e protruding from the lower surface of the connecting portion 4c are provided, and locking step portions 4f, 4g are provided at the tips of the blade portions 4d, 4e. The pair of blade portions 4d and 4e are inclined and project in the opposite direction, and are opposed to each other on the short axis side of the through hole of the oval body panel by the locking step portions 4f and 4g provided on the blade portions 4d and 4e. It locks to the peripheral edge.

As shown in FIG. 4, the side lock band-type clamp 1 having the above-described shape has the band 3 attached to the through hole 6 of the main body 2 in a state where the band 3 is wound around the plurality of electric wire groups 21 constituting the wire harness 20. Insert from the inlet 6a and pull out from the outlet 6b. In a state where the band 3 is wound around the electric wire group 21, the surface provided with the guide convex portions 10A and 10B is an outer peripheral surface.
A jig for clamping and cutting (not shown) is attached to the band 3 drawn out from the through hole 6, and the band 3 is strongly pulled by the jig so that the locking groove 7 </ b> A, 7 </ b> B of the band 3 is extended from the main body 2. The protruding locking pieces 12A and 12B are locked and the band 3 drawn out from the outlet 6b is cut.

When the band 3 is inserted into the through hole 6, the width of the band 3 is substantially equal to the width of the through hole 6 as shown in FIG. 2 penetrates into the through-hole 6 in a state of being inserted into the guide recesses 14A and 14B provided on the inlet side. Since the convex portions 10A and 10B of the band 3 are continuous in the length direction, the band 3 is obliquely inclined because the band 3 is pulled in a state where the convex portions 10A and 10B are fitted in the guide concave portions 14A and 14B of the main body 2. It is possible to prevent “pickling” from being pulled in the direction.
Therefore, as shown in FIG. 6, the locking pieces 12A and 12B protruding from the main body 2 can be accurately locked in the locking grooves 7A and 7B on both sides in the width direction of the band 3, and the lock can be prevented from being released.

  Further, when the wire harness to which the band-type clamp 1 of the side lock is attached is installed in the installation space formed by the narrow space S of the door D shown in FIG. Since the protrusion amount can be reduced, the space S can be routed.

7A and 7B show a first modification.
In the modification, the guide convex portions provided on the band 3 are three convex portions 10A, 10B, and 10C, and the guide concave portions provided on the main body 2 are also three 14A, 14B, and 14C. Since other configurations and operational effects are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

FIGS. 8A and 8B show a second modification. In this modification, the guide recesses 20A and 20B are provided on the band 3, while the guide protrusions 21A inserted into the recesses 20A and 20B on the main body 2 side. 21B is protrudingly provided.
Since the depth of the recesses 20A and 20B cannot be increased due to the relationship with the thickness of the band 3, it is preferable to provide the projections 10A and 10B for guides on the band 3 as in the first embodiment. .

9A and 9B show a second embodiment.
In 2nd embodiment, convex part 10A, 10B for a guide is provided in the inner surface side which contacts a wire harness when the band 3 is wound around a wire harness. Therefore, the convex portions 10A and 10B also serve as a slip prevention function with the wire harness.
On the other hand, a guide base 15 provided with guide concave portions 14A and 14B into which the convex portions 10A and 10B are inserted protrudes from the upper surface of the bottom wall 2c on the main body 2 side.

  The wire group of the wire harness is not positioned on the front end side of the band 3 to be inserted into the through hole 6, so that the through hole is inserted while inserting the convex portions 10A and 10B of the band 3 into the guide concave portions 14A and 14B on the main body 2 side. 6 can be passed through and the band 3 can be pulled. Therefore, also in this case, the band 3 is prevented from being pulled obliquely.

DESCRIPTION OF SYMBOLS 1 Band type clamp 2 Main body 2a, 2b Left and right side wall 3 Band 4 Car body locking part 5 Dish part 6 Through hole 6a Inlet 6b Outlet 7A, 7B Locking groove 12A, 12B Locking piece 10A, 10B Guide convex part 14A, 14B Concave portion for guide 20 Wire harness 21 Wire group P Body panel H Through hole

Claims (2)

It is a band type clamp made of a resin molded product that is wound around the outer periphery of a plurality of electric wires and bound as a group of electric wires and fixed to the vehicle body,
A box-shaped main body, a vehicle body locking portion protruding from the outer surface of the main body, and a band extending from an edge of one side opening of the through hole provided in the main body,
The band is provided with a locking groove continuously along the length direction on both side edges in the width direction, and a locking piece is provided on the inner surface facing the through hole of both side walls in the width direction of the main body. It is configured to side lock the band that locks with the locking groove of
And the convex part or recessed part extended in a length direction is provided in the intermediate position of the width direction of the said band, On the other hand, the recessed part for a guide fitted with the said convex part on the upper wall or lower wall surrounding the said band insertion side opening or A band-type clamp that is provided with a guide convex portion that fits into the concave portion and that can hold the center position in the width direction of the band inserted through the band through-hole and the center position in the width direction of the main body.   A plurality of protrusions are provided on the surface that becomes the outer peripheral surface when the band is wound around the electric wire group with a gap in the width direction, and the plurality of protrusions are fitted on the lower surface of the upper wall of the main body. The band-type clamp according to claim 1, wherein a guide wall portion provided with a recess is protruded and the vehicle body locking portion is protruded on the upper surface of the upper wall of the main body.

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