WO2011024490A1

WO2011024490A1 - Band type clamp

Info

Publication number: WO2011024490A1
Application number: PCT/JP2010/050720
Authority: WO
Inventors: 山中英岳; 山竹尚文
Original assignee: 住友電装株式会社
Priority date: 2009-08-27
Filing date: 2010-01-21
Publication date: 2011-03-03
Also published as: JP2011046418A

Abstract

Provided is a band type clamp by which the projecting amount of a wiring harness from a vehicle body panel can be reduced. The clamp is provided with a box-shaped body (2) for locking a band, a vehicle body locking portion (4) which projects from the body, and a band (3), wherein a plate portion (5) of the vehicle body locking portion (4) defines the upper wall of the body (2), a locking piece (10) is provided to project from the plate portion (5), and the locking piece (10) is locked with a locking groove (7) of the band (3) which is inserted into a through hole (6) of the body (2).

Description

Band type clamp

The present invention relates to a band-type clamp, and more specifically, is used for binding a wire group of a wire harness routed to an automobile and fixing it to a vehicle body panel.

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 that is widely used has the shape shown in FIGS. 6A to 6D, and the blade-like body locking portion 102 projects from the outer surface of the upper wall of the box-shaped main body 101 projecting from the band 100. Has been established. 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.

When the locking position of the locking piece 106 of the main body 101 and the locking groove 103 of the band is located immediately below the central axis L1 of the vehicle body locking portion 102, the band-shaped clamp is configured such that the locking piece 106 is locked during locking. In order to prevent bending, the protruding position L2 of the locking piece 106 is offset from the central axis L1 of the vehicle body locking portion 102.
Further, the vehicle body locking portion 102 has a shaft portion 102b protruding from the center of a dish portion 102a protruding from the outer wall of the main body 101, and the blade portion 102c is folded in two directions from the tip of the shaft portion 102b. And a locking step 102d is provided at the tip of each blade 102c.

As shown in FIGS. 7 (A) and 7 (B), the band-type clamp having the general shape described above has a band 100 wound around a wire harness 120 and is inserted and locked to a main body 101 to be attached to an automobile. When wiring the harness, the vehicle body locking portion 102 is inserted and locked in the locking hole H of the vehicle body panel P.

In a 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, the upper wall thickness of the main body 101, the locking piece 106 , The thickness of the band 100, the thickness of the lower wall of the main body 101, and the radius of the wire harness are added together, and the distance a is relatively large. Therefore, it is necessary to provide a wiring harness wiring space that can secure this distance a along the vehicle body panel.
Further, since the locking position between the locking piece 106 and the locking groove 103 of the band 100 is offset from the center axis L1 of the vehicle body locking portion 102, as shown in FIG. It becomes easy for the harness 120 to fall down to the side off the center of the vehicle body locking portion 102. In addition, since the positioning force is reduced when the center O of the wire harness 120 is spaced from the vehicle body panel P as described above, the wire harness 120 is more easily tilted to the offset side. Therefore, it is necessary to secure the wiring space for the wire harness in consideration of the collapsed state. However, since parts to be mounted on automobiles are rapidly increasing, there is a demand for making the wiring harness wiring space as small as possible.

Further, the present applicant has provided a band type clamp C-1 shown in FIG. 8 in Japanese Patent Application Laid-Open No. 11-255260 assuming that this type of band type clamp is attached to a corrugated tube externally mounted on a group of electric wires.
In the band type clamp C-1, a convex portion 202 is provided at a position corresponding to a concave portion of the corrugated tube on the smooth surface 201 of the band 200 wound around the corrugated tube, and the band 200 is positioned and attached to the corrugated tube. .
However, the band-type clamp C-1 is also in the same state as in FIGS. 7A and 7B, requires a distance a from the vehicle body panel, and the corrugated tube externally fitted to the wire harness is on the locking side. It becomes easy to collapse.

JP-A-11-255260

The present invention has been made in view of the above-described problem. The distance between the wire harness attached to the vehicle body panel by attaching the band-type clamp and the vehicle body panel is made as small as possible, and the center of the wire harness is the center of the vehicle body locking portion. The wire harness is prevented from falling down and stabilized so that the wiring space of the wire harness along the vehicle body panel can be made as small as possible.

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,
A box-shaped main body for locking the band, a vehicle body locking portion protruding from the main body, and a band,
The vehicle body locking portion includes a pair of plates that project from the bottom of the plate, a support shaft that protrudes from the bottom of the plate, and a pair that projects in a folded manner from the tip side of the support shaft. And a locking step provided at the tip of each blade,
The band-locking main body penetrates in the left-right direction with an upper wall made up of the bottom of the dish part, left and right side walls projecting from the bottom lower surface of the dish part, and a bottom wall connecting the lower ends of the left and right side walls. A shape surrounding the hole, and provided with a locking piece projecting from the bottom lower surface of the dish portion serving as the upper wall toward the through hole on the central axis of the vehicle body locking portion,
The band-type clamp characterized in that the band protrudes from the bottom wall on the one-side opening side of the through hole of the main body, and is continuously provided with a locking groove for locking the locking piece on one surface in the width direction. Is provided.

As described above, in the present invention, the upper wall of the box-shaped main body that penetrates and locks the band is constituted by the dish portion that is a constituent member of the vehicle body locking portion, and the conventional upper wall of the main body is eliminated. ing. In this way, using the dish part as the upper wall of the main body, standing the front and rear side walls of the main body from the bottom surface of the dish part, providing the bottom wall continuously between the lower ends of the front and rear side walls, and Thus, the locking piece protrudes from the bottom surface of the plate portion. In this way, when the dish part is used as the upper wall of the main body, the dish part has flexibility, and therefore, the locking piece protruding from the bottom surface of the dish part is arranged on the central axis of the vehicle body locking part. . Therefore, since the locking position between the band and the main body is disposed on the central axis of the vehicle body locking portion, the wire harness shown in FIG. 7B can be prevented from falling to the side.
And since the upper piece of the main body is eliminated and the locking piece protrudes from the plate portion, the distance between the vehicle body panel and the center of the wire harness can be reduced by the thickness of the main body.
As described above, with the wire harness attached to the vehicle body panel via the band-type clamp, the dimension from the vehicle body panel to the center position of the wire harness can be reduced and the wire harness can be prevented from falling to the side. The wiring space for the wiring harness along the vehicle body panel can be made narrower than before.

The locking piece projecting from the bottom of the dish portion serving as the upper wall of the main body is provided at the center position in the width direction of the main body as a main locking piece, and the locking piece is at the center in the width direction of the band. The sub-locking piece is locked to the locking groove, and a sub-locking piece is provided at a band outlet side or / and an inlet position from the main locking piece, and the sub-locking piece is connected to the main locking piece in the width direction. It is preferable that they are provided at the same position or both side positions in the width direction, and these sub locking pieces are locked in the locking grooves of the band.

As described above, in addition to the main locking piece arranged on the central axis of the vehicle body locking portion, if the sub locking pieces are provided and locked at a plurality of locations, the vehicle vibrations can be obtained only in the case of the main locking piece. Although the main locking piece is worn by the above, wear of the main locking piece can be prevented by providing a sub locking piece to increase the locking force.

It is preferable that the width of the band is as wide as 7.5 mm to 20 mm, and the sub locking pieces are provided on the outlet side of the main locking piece and on both sides in the width direction.

Conventionally used bands have a maximum width of about 7 mm and a wall thickness of about 1.2 mm.
As described above, when the width of the band is made wider than before, the tightening force can be distributed to the wire harness and the load on the wire harness can be reduced. In addition, an increase in material cost can be suppressed by reducing the wall thickness instead of widening the band.
Furthermore, in order to lock the wide band, the band is stably fastened in the width direction by providing the left and right sub-locking pieces together with the main locking piece as the locking piece provided on the main body as described above. be able to.

As described above, the band-type clamp according to the present invention uses the plate portion provided in the vehicle body locking portion as the upper wall of the main body through which the band penetrates and engages with the band locking groove from the bottom surface of the plate portion. Since the locking piece to be stopped protrudes, the locking piece can be easily bent, and as a result, the locking piece can be provided at a position on the central axis of the vehicle body locking portion. Therefore, the center position of the wire harness attached to the vehicle body panel via the band-type clamp can be matched with the center position of the vehicle body locking portion, and the wire harness can be prevented from falling down. In addition, by eliminating the upper wall of the main body, the distance of the wire harness from the vehicle body panel can be shortened, and the wire harness can be brought close to the surface of the vehicle body panel and stably held. Thus, since the distance from the vehicle body panel of a wire harness can be shortened and the fall of a wire harness can be prevented, the wiring space of a wire harness can be reduced.

1A and 1B show a first embodiment of the present invention, in which FIG. 1A is an enlarged perspective view of a main part, FIG. 1B is an overall side view, and FIG. (A) is an enlarged front view showing the main body and the vehicle body locking portion, (B) is a cross-sectional view taken along the line BB of (A), and (C) is an explanatory view showing the position of the locking piece. (A) (B) (C) is sectional drawing which shows the attachment process of the band type clamp to a wire harness. It is sectional drawing which shows the state attached to the vehicle body. A 2nd embodiment is shown, (A) is a principal part front view, and (B) is an explanatory view showing a position of a locking piece. (A) to (D) are drawings showing a conventional general-purpose band-type clamp. (A) (B) is drawing explaining the problem of the band type clamp of FIG. It is a perspective view of the band type clamp of other conventional examples.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 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 left-right direction X, and penetrates through the upper and

lower side walls

2a, 2b, the bottom wall 2c, and the upper wall made up of the dish portion 5 of the vehicle body locking portion 4. It is formed in a box surrounding the hole 6. The right opening of the through hole 6 is a band inlet 6a, and the left 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 a locking groove 7 continuously on one surface in the width direction. One surface on which the locking groove 7 is provided is a surface on the outer peripheral surface side when the band 3 is wound around the wire harness, and on the inner peripheral surface side in contact with the wire harness, as shown in FIG. A small protrusion 8 for stopping is provided.

The plate portion 5 is conventionally provided as a portion that comes into contact with the surface of the vehicle body panel when the vehicle body locking portion 4 is inserted and locked in the through hole of the vehicle body panel. The dish portion 5 has an elliptical shape, and a flange portion 5b protrudes in an arc shape from the periphery of the bottom portion 5a. The bottom part 5a of the dish part 5 is used as the upper wall of the main body 2 as described above, and the front and

rear side walls

2a and 2b of the main body 2 project from the central bottom part 5a of the dish part 5.

The vehicle body locking portion 4 includes

support shaft portions

4a and 4b projecting from both sides on the long axis side of the bottom portion 5a of the dish portion 5, a connecting portion 4c for connecting the tips of the

support shaft portions

4a and 4b, A pair of

blade portions

4d, 4e projecting from the lower surface of the connecting portion 4c is 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 the short axis side of the through hole H of the vehicle body panel P having an elliptical shape by the locking

step portions

4f and 4g provided on the

blade portions

4d and 4e. It is made to latch on the periphery which opposes. As shown in FIG. 2B, the center axis L1 of the vehicle body locking portion 4 is a position sandwiched between the

blade portions

4d and 4e.

The main body 2 for locking the band projects on the central axis L1 of the vehicle body locking portion 4 from the bottom bottom surface of the dish portion 5 serving as the upper wall toward the through hole 6. Has been established. And the protrusion position of this locking piece 10 is made into the center part of the width direction Y (the left-right direction X orthogonal direction) of the main body 2.
Further, with respect to the main locking piece 10,

sub locking pieces

11 and 12 are provided on both sides in the width direction Y at a position on the band outlet 6 b side of the through hole 6. The main locking piece 10 and the

sub locking pieces

11 and 12 are located at the vertices of the equilateral triangle.
The dimension between the main locking piece 10 and the

sub locking pieces

11 and 12 is the same as the pitch of the locking groove 7 provided in the band 3, and the main locking piece 10 is placed in one of the adjacent locking grooves 7. The

sub locking pieces

11 and 12 are locked in the other locking groove 7.

The width of the band 3 is wider than that of the conventional general-purpose product shown in FIG. 6, and is 10 mm in this embodiment. Further, the thickness of the band 3 is made thinner than that of a conventional general-purpose product, and is 0.7 mm in this embodiment.

In the band locking main body 2, the dimension L3 to the inner surface of the through hole facing the main locking piece 10 and the

sub locking pieces

11, 12 protruding from the through hole 6 is as narrow as 1.0 mm. is doing. And the vertical dimension L4 of the main body 2 from the bottom part upper surface of the dish part 5 used as the upper wall of the main body 2 to the lower surface of the bottom wall 2c is 3 mm, and the main body 2 is made low. The general-purpose conventional product shown in FIG. 6 is 4.5 mm and is 1.5 mm lower.

As shown in FIG. 3, the band-type clamp 1 having the above-described shape is formed by winding the band 3 around a plurality of electric wire groups 21 constituting the wire harness 20 and then inserting the band 3 into the through hole 6 of the main body 2 from the inlet 6 a. And pull out from the outlet 6b. A jig (not shown) for tightening and cutting is attached to the pulled-out band 3, and the band 3 is pulled strongly with the jig to lock the main locking piece 10 and the sub-locking in the locking groove 7 of the band 3. While the

pieces

11 and 12 are locked, the band 3 drawn out from the outlet 6b is cut.

When the band 3 is inserted into the through hole 6, it is necessary to bend the main locking piece 10 and the

sub locking pieces

11 and 12. Since these main locking pieces 10 and

sub-locking pieces

11 and 12 protrude from the upper wall of the main body 2 formed of the plate part 5 which is easily bent, when the band 3 is pulled through the through hole 6, The dimensions of the locking piece 10 and the tips of the

sub-locking pieces

11 and 12 and the inner surface of the through hole 6 facing each other are 1.0 mm, but the dish portion 5 bends upward as shown in FIG. Therefore, the band 3 can be passed through without difficulty. Therefore, the main locking piece 10 is positioned on the central axis L1 of the vehicle body locking portion 4, and the main locking piece 10 and the locking groove 7 of the band 3 are on the central axis L1 of the vehicle body locking portion 4. It can be locked. As a result, the center O of the wire harness fastened to the main body 2 by the band 3 can be fixed to the central axis L1, and the side fall of the wire harness as shown in FIG. 7B can be prevented.

When the wire harness with the band-type clamp 1 attached as described above is routed along the vehicle body panel of the automobile, the vehicle body locking portion 4 is inserted into the through hole H of the vehicle body panel P as shown in FIG. Stop. At that time, the pair of

blade portions

4d and 4e of the vehicle body locking portion 4 is bent and inserted into the through hole H. After the insertion, the

blade portions

4d and 4e are returned to their original positions, and the locking

step portions

4f and 4g are returned. Is locked to the periphery of the through hole H. In this state, the flange portion 5b of the plate portion 5 expands and is pressed against the surface of the vehicle body panel P. By using the dish portion 5 as the upper wall of the main body 2, the main body 2 comes into contact with the vehicle body panel P in a stable state.

Since the upper wall of the main body 2 is formed by the bottom portion 5a of the dish portion 5 with the band-type clamp 1 attached to the vehicle body panel P as described above, from the surface of the vehicle body panel P to the center position of the wire harness. The dimensions can be shortened and the wire harness can be held stably.
As described above, since the protruding amount of the band-type clamp 1 protruding from the vehicle body panel P can be reduced, and the wire harness can be prevented from falling as described above, the wiring space for the wire harness along the vehicle body panel P can be reduced. it can.

In addition, the main locking piece 10 is locked in the locking groove 7 of the band 3 and the

sub locking pieces

11 and 12 are also locked in the locking groove 7 and locked at three positions. The locking force can be increased, and the wide band 3 can be locked so as not to be twisted. And since the

sub latching pieces

11 and 12 are latched by the exit side of the band 3, even if a load is applied to the band 3, the influence on the main latching piece 10 can be reduced. In addition, since the load due to vehicle vibration can also be dispersed by the three locking

pieces

10, 11, 12, the wear of the main locking piece 10 can be reduced, and the reliability of the band-type clamp can be improved.
Furthermore, since the band 3 is wide, the tightening force can be distributed to the wire harness.

5A and 5B show a second embodiment of the present invention.
The band type clamp 1-1 of the second embodiment is the same as the first embodiment in that the plate portion 5 is the upper wall of the band locking main body 2, but the width of the band 3 is the same as the conventional one. It is set to 6.4 mm which is 7 mm or less.
Only the main locking piece 10 protrudes from the lower surface of the bottom portion 5a of the dish portion 5 on the central axis of the vehicle body locking portion 4, and the width of the locking piece 10 is larger than that of the locking piece 10 of the first embodiment. It is wide.
The vehicle body locking portion 4 projects a frame-shaped support shaft 4k from the bottom portion 5a of the plate portion 5, and a pair of

blade portions

4j and 4i project from both sides in the width direction of the support shaft 4k. The locking

step portions

4m and 4n provided at the tips of 4j and 4i are locked to the peripheral edge facing the long axis side of the through hole of the vehicle body panel.
Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

In the second embodiment, since the width of the band 3 is narrower than that of the first embodiment, the band 3 can be stably locked only with the main locking piece 10. By narrowing the width of the band 3 in this way, there is an advantage that the material cost can be reduced and the configuration of the main body 2 for locking the band can be simplified.

The present invention is not limited to the first and second embodiments. For example, one sub locking piece may be provided and provided at the center in the width direction in the same manner as the main locking piece. Further, when the locking hole of the vehicle body panel is circular, the dish portion is circular. In addition, the shape of the vehicle body locking portion may be such that one support shaft portion projects from the center of the plate portion, and a pair of blade portions are provided in a folded shape from the tip of the support shaft portion.

DESCRIPTION OF SYMBOLS 1 Band type clamp 2 Main body for band locking 3 Band 4 Car body locking part 4a

Support shaft part

4d, 4e Blade | wing part 4f 4g Locking step part 5 Dish part

5a Bottom part

5b Gutter part 6 Through-hole 7 Locking groove 10

Main Locking pieces

11, 12 Sub-locking pieces 20 Wire harness 21 Wire group P Car body panel H Through hole L1 Center axis of the car body locking part

Claims

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 for locking the band, a vehicle body locking portion protruding from the main body, and a band,
The vehicle body locking portion includes a pair of plates that project from the bottom of the plate, a support shaft that protrudes from the bottom of the plate, and a pair that projects in a folded manner from the tip side of the support shaft. And a locking step provided at the tip of each blade,
The band-locking main body penetrates in the left-right direction with an upper wall made up of the bottom of the dish part, left and right side walls projecting from the bottom lower surface of the dish part, and a bottom wall connecting the lower ends of the left and right side walls. A shape surrounding the hole, and provided with a locking piece projecting from the bottom lower surface of the dish portion serving as the upper wall toward the through hole on the central axis of the vehicle body locking portion,
The band-type clamp characterized in that the band protrudes from the bottom wall on the one-side opening side of the through hole of the main body, and is continuously provided with a locking groove for locking the locking piece on one surface in the width direction. .
The locking piece projecting from the bottom of the dish portion serving as the upper wall of the main body is provided at the center position in the width direction of the main body as a main locking piece, and the locking piece is at the center in the width direction of the band. The sub-locking piece is locked to the locking groove, and a sub-locking piece is provided at a band outlet side or / and an inlet position from the main locking piece, and the sub-locking piece is connected to the main locking piece in the width direction. The band-type clamp according to claim 1, wherein the band-type clamp is provided at the same position or at both side positions in the width direction, and the sub locking pieces are locked in the locking grooves of the band.
The width of the band is as wide as 7.5 mm to 20 mm,
The band type clamp according to claim 2, wherein the sub locking pieces are provided on the outlet side of the main locking piece and on both sides in the width direction.