CLAMP FOR PLURAL WIRE HARNESSES
A clamp including a panel fixing portion and a wire harness holding portion. The wire harness holding portion includes a holding portion main unit with a U-shaped groove with an open upper portion and a cover portion. A plurality of protruding ribs are formed on the inner wall surface on the bottom surface side of the holding portion main unit and extend lengthwise with respect to the wire harnesses from the mid-height position of the U-shaped groove, the open portion upward from the mid-height position of the U-shaped groove being wide enough to accommodate more wire harnesses above the mid-height position. The cover portion is formed with an elastic harness pressing tab for elastically pressing down on the upper portion of the wire harnesses, so that the entire outer periphery of the wire harnesses are elastically pressed down upon when covered.
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This application claims the benefit of Japanese Application No. 2008-69676 filed Mar. 18, 2008, the disclosure of which is incorporated herein by reference.
TECHNICAL FIELDThe present invention relates to a clamp for securely holding a plurality of wire harnesses in a manner similar to wrapping with tape, regardless of the number of wire harnesses.
BACKGROUND ARTIt is common to wrap a plurality of wire harnesses with tape to secure the wire harnesses to a mounting component such as a panel.
[Patent Document 1] Published Unexamined Utility Model Application No. 5-047666
[Patent Document 2] Published Unexamined Utility Model Application No. 7-002690
[Patent Document 3] Published Unexamined Patent Application No. 7-059232
[Patent Document 4] Published Unexamined Patent Application No. 2006-187095
[Patent Document 5] Published Unexamined Patent Application No. 2005-113953
Patent Document 1 describes a linear object retaining tool able to retain three to eight linear objects such as cords to a mounting component. In this retaining tool, a pressure applying and interposing tab is installed at one end of a mounting base plate and is freely bent via a hinge. An arc-shaped engagement tab stands erect from the other end of the mounting base plate along the arc-like swinging trajectory of the pressure applying and interposing tab. An engagement portion with an inverted U-shaped horizontal cross section and a space for inserting the engagement tab is formed on the free end of the pressure applying and interposing tab. By engaging the engagement tab and the engagement portion, three to eight linear objects can be fastened and retained between the mounting base plate and the pressure applying and interposing tab. Patent Document 1 describes a configuration in which a plurality of linear objects such as cords are retained on a mounting component using a single retaining tool. However, this retaining tool cannot keep the plurality of linear objects from sliding back and forth in the axial direction and in the direction perpendicular to the axial direction.
Patent Document 2 describes a holding tool for electrical wires able to secure long components such as two electrical wires to a mounting component. This holding tool is configured to mount two electrical wires separately, and cannot secure long components such as a plurality of wire harnesses together. Patent Document 3 describes an inexpensive clip for electrical wires able to easily secure electrical wires to a mounting component such as a vehicle body. This clip is configured to secure a single electric wire, and cannot secure long components such as a plurality of wire harnesses together.
The long object securing tool described in Patent Document 4 accommodates a plurality of long objects in a retaining portion with a semicircular grooved shape. A lid turning on a hinge is closed from above to hold the long objects in place. An elastic pressure-applying tab is formed in the lid to apply pressure to the upper surface of the long objects when the lid is closed. Because the retaining portion in this long object securing tool has a semicircular grooved shape, there is space on either side and, thus, space for the long objects to move. As a result, it cannot keep the long objects from moving in the direction perpendicular to the axial direction. The cable clamp described in Patent Document 5 has a configuration for holding a single cable in place. This cable clamp does not have a configuration able to secure long components such as a plurality of wire harnesses together. It cannot hold a plurality of cables so that they are enveloped all around such as when wrapped in tape.
SUMMARY OF THE INVENTIONAn aspect of the present invention is to provide a wire harness clamp in which a plurality of wire harnesses can be retained without being able to move in the axial direction or in the direction perpendicular to the axial direction such as when a plurality of wire harnesses is wrapped with tape but without requiring the wire harnesses to be wrapped with tape.
In order to achieve this aspect, one embodiment of the present invention includes a clamp having a wire harness holding portion for holding a plurality of wire harnesses, wherein the wire harness holding portion includes a rigid holding portion main unit having a U-shaped groove with an open upper portion and a space accommodating a plurality of wire harnesses, and a cover portion for closing the open upper portion of the holding portion main unit, wherein a plurality of protruding ribs is formed on the inner wall surface on the bottom surface side of the holding portion main unit and extend lengthwise with respect to the wire harnesses from the mid-height position of the U-shaped groove to align the wire harnesses so as to be stacked from the bottom surface, wherein the open portion above the mid-height position of the U-shaped groove is wide enough to accommodate more wire harnesses above the mid-height position, wherein the cover is formed with elastic wire harness pressing tabs for elastically pressing down on the upper portion of the wire harnesses when the cover portion is closed and the open portion of the U-shaped groove is closed, and wherein the entire outer periphery of the wire harnesses accommodated in the U-shaped groove is surrounded by the inner wall surface of the U-shaped groove and the harness pressing tabs to keep the wire harnesses from sliding in the axial direction and moving in the direction perpendicular to the axial direction.
In the clamp of an exemplary embodiment, the entire periphery of the plurality of wire harnesses accommodated in the U-shaped groove may be surrounded with pressure applied elastically from the inner wall surface of the U-shaped groove and a harness pressing tab to keep the wire harnesses from sliding axially and to keep them from moving in the direction perpendicular to the axial direction. Because this has the same effect as wrapping a plurality of wire harnesses with tape, it eliminates the cumbersome tape wrapping operation. The same clamp can also be used to retain different numbers of wire harnesses. A plurality of protruding ribs is formed on the inner wall surface on the bottom surface side of the holding portion main unit and extend lengthwise with respect to the wire harnesses from the mid-height position of the U-shaped groove to align the wire harnesses so as to be stacked from the bottom surface, and the open portion above the mid-height position of the U-shaped groove is wide enough to accommodate more wire harnesses above the mid-height position. As a result, the wire harnesses do not have to be aligned beforehand, but can be aligned by the U-shaped groove in the holding portion main unit and secured in a taut configuration. Also, because the holding portion main unit has a simple configuration, the cost of each clamp is low.
In an exemplary embodiment of the clamp, a hinge may be connected to one end of the cover portion and one end of the holding portion main unit, and the cover portion turns on the hinge to close the open portion of the holding portion main unit. The cover portion has a lock portion formed in the end opposite the hinge, and the holding portion main unit has an engagement portion formed at the end opposite the hinge to engage the lock portion, and the lock portion engages the engagement portion to keep the open portion closed when the cover portion turns on the hinge and closes the open portion of the holding portion main unit. The lock portion has a first locking claw and a second locking claw to engage the engagement portion; the first locking claw is positioned to engage the engagement portion with the cover portion keeping the space above the space accommodating the wire harnesses in the holding portion main unit somewhat wider, and the second locking claw is positioned to engage the engagement portion with the cover portion keeping the space above the space accommodating the wire harnesses in the holding portion main unit narrower. Thus, a plurality of wire harnesses can be reliably secured regardless of the number.
In an exemplary embodiment of the clamp, four protruding ribs may be arranged to position one wire harness at the bottom of the U-shaped groove and to form a shaped space to stack two more wire harnesses on top of this wire harness, the three stacked wire harnesses forming an upside-down triangle. The width of the U-shaped groove on the inner wall surface from the mid-height position of the U-shaped groove to the open portion facing upward becomes larger from the mid-height position to allow three more wire harnesses to be stacked on top of the two wire harnesses at the mid-height position and form an upside-down triangle with six wire harnesses. The harness pressing tabs have a tip elastically pressing down on the upper surface of the wire harnesses accommodated inside the U-shaped groove, and the horizontal cross-section of the tip has a curved shape to press down firmly on the middle portion of the upper surface of the wire harnesses in the lengthwise direction.
In this clamp, a panel fixing portion is integrated with the wire harness holding portion main unit to be fixed to a workpiece such as a panel. The panel fixing portion comprises a main portion integrated with the wire harness holding portion and a metal holding tab connected to hold the main portion, a pair of elastic engagement tabs is formed in the holding tab, and the pair of elastic engagement tabs interpose a plate-shaped mounting portion standing erect from the panel.
The following is an explanation with reference to the figures of the clip for a plurality of wire harnesses in an exemplary embodiment of the present invention.
The following is an explanation of the configuration of the clip 1 with reference to
In the embodiment shown in the figures, the panel fixing portion 5 consists of a main unit 8 and a metal holding tab 9 accommodated and held by and connected to the main unit 8 in order to fix the clamp to the panel with force. While the main unit 8 and the holding tab 9 are integrally molded of hard plastic, the elastic engagement tabs 9A can also be molded of hard plastic. In the example shown in the figures, the holding tab 9 is formed in a shape to receive the mounting component 7 on the panel 2 from the right in
The wire harness holding portion main unit 6 is securely connected to the main unit 8 of the panel fixing portion 5 through integral molding. As shown in
In the holding portion main unit 10, the width of the U-shaped groove 12 increases from the mid-height position on the inner wall surface from the mid-height position in the space of the U-shaped groove 12 to the open portion above so that even more wire harnesses can be stacked inside. In the embodiment shown in the figures, as shown in
An engagement portion 15 is formed in the holding portion main unit 10 which has an engagement shoulder on the side opposite the cover portion 11 for engaging locking claw 21 or 22 on the cover portion 1 1. The engagement portion 15, as indicated by the dotted lines in
One end of the cover portion 11 is connected to one side of the holding portion main unit 10 via a thin hinge 18 so as to be able to turn around the hinge 18. The cover 11 is turned on the hinge 18 to close the upper portion of the wire harnesses 3 accommodated by and held in the U-shaped groove 12 in the holding portion main unit 10. This keeps the wire harnesses 3 from coming out. To prevent this, a lock portion 19 is formed on the front end (upper end in
When the second locking claw 22 engages the engagement portion 15, the cover portion 11 closes flat, as shown in
A harness pressing tab 23 is formed in the cover portion 11 to elastically support and envelop the upper portion of the wire harnesses 3 accommodated in the U-shaped groove 12. The harness pressing tab 23 has a tip 25 (
As shown in
As indicated by the dotted lines in
If the wire harnesses 3 are long, clamps 1 can be installed at multiple locations along the wire harnesses 3. If the wire harnesses are to be installed on an automobile panel, clamps 1 are installed at predetermined locations for the wire harnesses according to the wiring layout.
The clamps are positioned towards the mounting portions 7 standing erect from the panel 2, and the elastic engagement portions 9 on the panel fixing portions 5 are pushed in. The panel fixing portions 5 are fixed to the panel 2, and the three wire harnesses 3 are mounted on the panel 2 via the clamps 1.
In the wire harness holding portion 6, three wire harnesses 3 are accommodated in the U-shaped groove 12 in the holding portion main unit 10. The cover portion 11 is positioned so that the lock portion 19 turning on the hinge 18 engages the engagement portion 15 of the holding portion main unit 10, and the second lock claw 22 engages the engagement shoulder on the engagement portion 15. In this way, the elastic end 25 of the harness pressing tab 23 bends elastically and presses down elastically to envelope the upper portion of the three wire harnesses 3. The curved portion 24 of the tip 25 (
The clamp 1 in
In both
As explained above, a plurality of wire harnesses can be held by the same clip 1 in a manner similar to tape wrapping and easily mounted on a mounting component such as a panel. (In the embodiments shown in the figures, three and six wire harnesses are held, but another number of wire harnesses can also be held.) As a result, the cumbersome tape wrapping operation can be eliminated, and the same clamp can be used to retain different numbers of wire harnesses. Because a clip is easy to mount on a mounting component, the wire harness mounting operation does not require any skill an can be performed in a short amount of time.
It will be appreciated by persons skilled in the art that the above embodiments have been described by way of example only, and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the invention as defined by the appended claims.
Claims
1. A clamp comprising:
- a wire harness holding portion for holding a plurality of wire harnesses, wherein the wire harness holding portion includes a rigid holding portion main unit having a U-shaped groove with an open upper portion and a space accommodating a plurality of wire harnesses, and a cover portion for closing the open upper portion of the holding portion main unit, wherein a plurality of protruding ribs are formed on the inner wall surface on a bottom surface side of the holding portion main unit and extend lengthwise with respect to the wire harnesses from a mid-height position of the U-shaped groove to align the wire harnesses so as to be stacked from the bottom surface,
- wherein the open portion above the mid-height position of the U-shaped groove is wide enough to accommodate more wire harnesses above the mid-height position, wherein the cover is formed with elastic wire harness pressing tabs for elastically pressing down on the upper portion of the wire harnesses when the cover portion is closed and the open portion of the U-shaped groove is closed, and
- wherein the entire outer periphery of the wire harnesses accommodated in the U-shaped groove is surrounded by the inner wall surface of the U-shaped groove and the harness pressing tabs to keep the wire harnesses from sliding in the axial direction and moving in the direction perpendicular to the axial direction.
2. The clamp of claim 1, wherein a hinge is connected to one end of the cover portion and one end of the holding portion main unit, and wherein the cover portion turns on the hinge to close the open portion of the holding portion main unit.
3. The clamp of claim 2, wherein the cover portion has a lock portion formed in an end opposite the hinge, and the holding portion main unit has an engagement portion formed at the end opposite the hinge to engage the lock portion, and
- wherein the lock portion engages the engagement portion to keep the open portion closed when the cover portion turns on the hinge and closes the open portion of the holding portion main unit.
4. The clamp of claim 3, wherein the lock portion has a first locking claw and a second locking claw to engage the engagement portion, wherein the first locking claw is positioned to engage the engagement portion with the cover portion keeping the space above the space accommodating the wire harnesses in the holding portion main unit somewhat wider, and
- wherein the second locking claw is positioned to engage the engagement portion with the cover portion keeping the space above the space accommodating the wire harnesses in the holding portion main unit narrower.
5. The clamp of claim 4, wherein four protruding ribs are arranged to position one wire harness at the bottom of the U-shaped groove and to form a shaped space to stack two more wire harnesses on top of this wire harness, the three stacked wire harnesses forming an upside-down triangle.
6. The clamp of claim 5, wherein the width of the U-shaped groove on the inner wall surface from the mid-height position of the U-shaped groove to the open portion facing upward becomes larger from the mid-height position to allow three more wire harnesses to be stacked on top of the two wire harnesses at the mid-height position and form an upside-down triangle with six wire harnesses.
7. The clamp of claim 6, wherein the harness pressing tabs have a tip elastically pressing down on the upper surface of the wire harnesses accommodated inside the U-shaped groove, and the horizontal cross-section of the tip has a curved shape to press down firmly on the middle portion of the upper surface of the wire harnesses in the lengthwise direction.
8. The clamp of claim 5, wherein a panel fixing portion is integrated with the wire harness holding portion main unit to be fixed to a workpiece such as a panel.
9. The clamp of claim 8, wherein the panel fixing portion comprises a main portion integrated with the wire harness holding portion and a metal holding tab connected to hold the main portion, wherein a pair of elastic engagement tabs is formed in the holding tab, and wherein the pair of elastic engagement tabs interpose a plate-shaped mounting portion standing erect from the panel.
10. A clamp comprising:
- a wire harness holding portion, the wire harness holding portion including a main unit and a cover portion;
- wherein the main unit comprises a generally U-shaped groove comprising a space for retaining wire harnesses with an open upper end and further comprises a plurality of protruding ribs formed on an inner wall surface of the U-shaped groove;
- wherein the cover portion is configured to move between a closed position of closing the open upper end of the U-shaped groove and an open position, the cover portion comprising a locking portion and a harness pressing tab; and
- wherein, when the cover portion is in closed position the locking portion engages an engagement portion of the main unit to retain the cover portion in the closed position and the harness pressing tab closes the open upper end of the U-shaped groove.
11. The clamp of claim 10, wherein the harness pressing tab is configured such that when the cover portion is in the closed position the harness pressing tab presses against wire harnesses retained in the space.
12. The clamp of claim 11, wherein the space is configured to receive wire harnesses in an upside-down pyramid arrangement.
13. The clamp of claim 12, wherein the space is configured to receive only a single wire harness at a bottom location
14. The clamp of claim 13, wherein the space is configured to receive exactly two wire harnesses in a row directly above the single wire harness.
15. The clamp of claim 10, wherein the clamp further comprises a panel fixing portion attached to the main unit, the panel fixing portion including a main unit and a metal holding tab, the metal holding tab including engagement tabs for engaging a mounting portion of a panel.
16. The clamp of claim 10, wherein the locking portion comprises a first locking claw and a second locking claw, and
- wherein when the first locking claw engages the engagement portion, the cover portion is retained in a first closed position and wherein when the second locking claw engages the engagement portion, the cover portion is retained in a second closed position.
Type: Application
Filed: Mar 18, 2009
Publication Date: Sep 24, 2009
Applicant: NEWFREY LLC (Newark, DE)
Inventors: Hiroto MATSUNO (Toyohashi-shi), Kiyohito SAKAKIBARA (Toyohashi-shi)
Application Number: 12/406,660