Harness board fixture
A harness board fixture with improved mounting features enables better positioning and securing of an automatic cable tie tool to the fixture. The mounting features may be provided on the same side or on opposite sides of an arcuate wire bundle support surface of the fixture. When provided on a same side, multiple mounting or locating features may be located near each other. The opposite side, forming a front of the fixture, may be open to define a readily accessible wire bundle entrance and exit path. The fixture preferably includes a mounting structure for reliably receiving and releaseably holding a push mount by snap-fit and oriented substantially perpendicular to the fixture base or at an angle.
This non-provisional application claims the benefit of U.S. Provisional Application No. 60/618,492 filed Oct. 13, 2004 and U.S. Provisional Application No. 60/692,679 filed Jun. 21, 2005.
BACKGROUNDThe invention is directed to a harness board fixture and, more particularly, to a harness board fixture that mountably receives an automatic cable tie tool used to apply a cable tie to a wire bundle positioned on the fixture. The harness board fixture may also mountably receive a push mount to which the cable tie may be applied by the automatic cable tie tool.
SUMMARYIt would be desirable to provide a harness board fixture that can readily, precisely, and securely mount an automatic cable tie tool.
It would further be desirable to provide a harness board fixture with improved mounting features that enable better positioning and securing of the automatic cable tie tool to the fixture. These mounting features may be provided on the same side or on opposite sides of an arcuate wire bundle support surface of the fixture and may include an interengaging mounting pin that engages a jaw of the tool. When provided on a same side, multiple mounting or locating features may be located near each other. Also, when provided on the same side, the opposite side, forming a front of the fixture, may be open to define a readily accessible wire bundle entrance and exit path.
It would be desirable to also provide a harness board fixture with a mounting structure for reliably receiving and releaseably holding a push mount. The push mount and a cable tie may be applied to a wire bundle with an automatic cable tie tool. The push mount may be supported with a snap-fit and oriented substantially perpendicular to the fixture base or at an angle.
It would further be desirable to provide a harness board fixture having a curved wire bundle support surface that forms a guide for routing a cable tie around a wire bundle and into a cable tie head of an automated cable tie installation tool without requiring use of both jaws of the tool to guide the cable tie.
It would also be desirable to provide an automatic cable tie tool configured to interengage a mounting pin of the harness board fixture to more reliably and securely latch the tool to the fixture.
It would further be desirable to provide an automatic cable tie installation tool configured with tool locating features that allow for simpler and/or more secure mounting. These mounting features may be substantially aligned with corresponding mounting structure on the harness board fixture. One of the mounting features may have an angled surface, allowing for guided movement of the automated cable tie tool from a rough initial placement position to a precise mounting position.
It would also be desirable to provide a harness board fixture having one or more sensors to ensure proper cable tie tool operation.
BRIEF DESCRIPTION OF THE DRAWINGSThe invention will be described with reference to the following drawings, wherein:
Automated cable tie installation tools are known per se. Examples of these tools include those disclosed in U.S. Pat. Nos. 3,946,769; 3,976,108; 4,498,506; and 4,632,247, all assigned to Panduit Corp. and hereby incorporated herein by reference in their entireties. Similar tools are also marketed by Panduit Corp. under the trade name of PAT1M and PAT1.5M automatic cable tie systems. However, exemplary cable tie tools may include additional features described below to mate with harness board fixture 20. Additionally, in certain embodiments, harness board fixture 20 may include one or more sensors 30, 44, 46 to ensure proper cable tie tool operation.
In operation, push mount 22 is releasably inserted into harness board fixture 20, as shown in
As best seen in
As best seen in
Different styles of push mounts can be accommodated by having snap-in adapters to hold the different sized or shaped push mounts. A wing push mount 22 is illustrated in
As shown in
Cavity 132 is preferably provided to support the push mount 300 in a substantially vertical orientation, perpendicular to base 120 of fixture 100. There is an ease of installation if the push mount is installed vertically. However, the push mount needs to be oriented correctly relative to the automated cable tie installation tool 200. The exact orientation depends on several factors, including the tool's jaw and handle design. Preferably, the tool needs to be oriented so that the handle does not bump onto the plywood or other base support on which the fixture is mounted. If there is sufficient height in the design, the push mount can be substantially vertically provided as shown. If there is insufficient height to prevent interference between the tool and base substrate, the fixture 100 can be mounted on standoffs to compensate for the insufficient height. Alternatively, the push mount cavity 132 can be oriented at a slight angle along support surface 130 to properly orient the push mount relative to the tool to enable proper operation of the tool 200. A typical push mount can be oriented at an angle α of between about 0-20° (
Automated cable tie installation tool 200 includes a handle 210 connected on one end to a conventional cable tie dispenser (unshown) through a feeder hose (also unshown). A cable tie tool head 220 is provided at the other end of handle 210. Head 220 includes a pair of projecting tool locating features 230 that mate with locating pads 150 on fixture 100 and a pair of tool locating studs 240 that mate with corresponding tool locating pin saddles 140 provided on fixture 100. The backside of tool 200 is preferably a substantial mirror image of the illustrated side. Preferably, at least one of the locating features on the harness board fixture includes an angled surface that allows a rough initial placement of the tool 200 during mounting to guide the tool to a precise mounting alignment. This may include angled surface 145 on tool locating pin saddles 140 and/or an angled surface on locating pads 150 as better shown in
Tool head 220 also includes structure within head 220 to feed a cable tie 500 (
Operation of the cable tool 200 and harness board fixture 100 will be described with reference to
A bundle of cable wires 400 is then initially placed in a predetermined configuration and path on one or more cable support surfaces 130 of one or more harness board fixtures 100 to form a wiring harness. A typical application for such a bundle 400 is in the making of an automobile wiring harness, but can be used to make other wire bundles. Each fixture and tool combination is preferably sized to accept a defined wire bundle maximum size. This may include, for example, a 1.5″ maximum bundle diameter or a 2.0″ maximum bundle diameter, which are bundled by a suitably sized cable tie. Once the bundles 400 are suitably positioned, cable tie installation tool 200 is mounted onto fixture 100 over bundle 400 by alignment of locating features as shown in
Cable tool 200 is then actuated, sending a cable tie 500 into tool head 220, which advances the tie around the wire bundle 400 and through push mount 300. Movement of cable tie 500 is constrained about a path defined by the front jaw 250, which may have a recessed interior, and by arcuate guide channel 136 in cable support surface 130 sized to receive a cable tie therein. If a push mount 300 is provided, the cable tie 500 is fed through an aperture in the push mount head of push mount 300.
Front jaw 250 then rotates about pivot joint 252 to a closed position. This force threads the cable tie 500 through the cable tie head and cinches the cable tie snugly about wire bundle 400 as shown in
As shown, harness board fixture 100 has access to wire bundle support surface 130 from multiple sides, such as either side, the top or front side, allowing improved flexibility in positioning of wire bundles 400 onto and away from support surface 130. This is because all of the cable tie installation tool locating features may be provided for on one side of the fixture 100 as shown, allowing for the opposite side, the front, to be open and free from obstruction. Thus, a wire bundle entrance and exit path may be provided on the front side of the fixture to allow removal or entry of the wire bundle. Moreover, by providing a cable guide surface 136 that continuously extends from the front jaw 250 to a position closely adjacent a head of the cable tie, the need for a cable tie guide using the rear jaw is eliminated, allowing the rear jaw to be used primarily for engagement with mounting pin 160.
Various push mounts and push mount retention structures for use with fixture 100 will be described with reference to
Push mount 300 in
Push mount receiving cavity 132, as best shown in
The use of flexible latches has various advantages over conventional push mount retaining structures. In the past, push mounts were held by friction fit within a suitably sized opening in the bottom wall of cavity 132. Although this design works for a while, because of the typical repeated use of the harness board fixtures to assemble numerous wire harnesses, the bottom opening in the cavity eventually increases from wear to a point where there is no longer a friction fit. Because harness board fixtures are often mounted on vertical walls, it is possible that loosely fitted push mounts will fall out due to forces of gravity or the like. This can complicate or slow down the assembly process and may result in the need to install a new fixture.
The flexible latches 134 are capable of repeated use without experiencing the same wear problem. Additionally, rather than relying on a friction fit, the latches 134 can yield during insertion to reduce insertion force yet sufficiently apply a biasing force or snap-fit to the push mount 300 to retain the push mount in the fixture.
In
Operation of the cable tool 200″ and harness board fixture 100″ in this embodiment is similar to that of the assembly in
Cable tool 200″ is then actuated, sending a cable tie 500″ into head 200″ and advanced around the wire bundle 400″ and through push mount 300″. Movement of cable tie 500″ is similarly constrained about a path defined by the front jaw 250″ and by arcuate channel 136″ in cable support surface 130″.
Front jaw 250″ then rotates about pivot joint 252″ to a closed position as shown to fully thread the cable tie. Cable tie 500″ is then tensioned and cut off, pulling push mount 300″ out of harness board fixture 100″. Upon completion, rear jaw 260″ is retracted as in the prior embodiment. Then, once all necessary cable ties 500″ are installed on wire bundle 400″, the completed wire harness formed by wire bundle 400″ can be removed from the harness board fixtures 100″.
The disclosed invention provides a harness board fixture that receives a push mount. The push mount and a cable tie may be applied to a wire bundle with an automatic cable tie tool. It should be noted that the above-described and illustrated embodiments and preferred embodiments of the invention are not an exhaustive list of the forms such a harness board fixture in accordance with the invention might take; rather, they serve as exemplary and illustrative of embodiments of the invention as presently understood. Many other forms of the invention are believed to exist.
Claims
1. A harness board fixture that can readily and securely mount an automatic cable tie tool used to apply a cable tie to a wire bundle positioned on the fixture, comprising:
- a main body defining an arcuate wire bundle support surface;
- a base mountable to a support surface; and
- tool locating features for precisely mounting the automatic cable tie tool to the fixture, the locating features including at least one tool locating saddle provided on the main body for securely receiving at least one tool locating stud on the automatic cable tie tool and constraining fore and aft movement of the tool; and at least one tool locating pad provided on the main body spaced from the tool locating saddle for mating with a corresponding locating feature on the automatic cable tool.
2. The harness board fixture of claim 1, wherein the at least one tool locating saddle includes a pair of tool locating saddles.
3. The harness board fixture of claim 1, wherein the at least one tool locating saddle and the at least one tool locating pad are on opposite sides of the arcuate wire bundle support surface.
4. The harness board fixture of claim 1, wherein the at least one tool locating saddle and the at least one tool locating pad are on a same side of the arcuate wire bundle support surface.
5. The harness board fixture of claim 4, wherein a front side of the fixture opposite the tool locating saddle and the tool locating pad is open to define a readily accessible wire bundle entrance and exit path from the front side.
6. The harness board fixture of claim 1, wherein an angled guide surface is provided on at least one of the tool locating features, allowing rough initial placement of the tool and guiding of the tool to a precise alignment position.
7. The harness board fixture of claim 1, wherein the arcuate wire bundle support surface includes a recessed cavity that releasably secures a push mount in the path of a cable tie.
8. The harness board fixture of claim 7, wherein at least one sensor is mounted to the main body to detect positioning of the push mount in the recessed cavity.
9. The harness board fixture of claim 1, wherein at least one sensor is mounted to the main body to detect mounting of the automatic cable tie tool to the fixture.
10. A harness board fixture that can readily and securely mount an automatic cable tie tool used to apply a cable tie to a wire bundle positioned on the fixture, comprising:
- a main body defining an arcuate wire bundle support surface;
- a base mountable to a support surface; and
- tool locating features for precisely mounting the automatic cable tie tool to the fixture, the tool locating features including at least one tool locating saddle provided on the main body on one side of the wire bundle support surface for securely receiving at least one tool locating stud on the automatic cable tie tool; and at least one tool locating pad provided on the main body spaced from the tool locating saddle on the same side of the wire bundle support surface for mating with a corresponding locating feature on the automatic cable tool, wherein a front side of the fixture opposite the locating features remains open to define a readily accessible wire bundle entrance and exit path from the front side.
11. The harness board fixture of claim 10, wherein the arcuate wire bundle support surface includes a recessed cavity that releasably secures a push mount in the path of a cable tie.
12. A harness board fixture and push mount assembly that can readily and securely mount an automatic cable tie tool used to apply a cable tie to a push mount and a wire bundle positioned on the fixture, comprising:
- a main body defining an arcuate wire bundle support surface, the support surface including a recessed cavity having a retention latch that releasably secures a push mount in the path of a cable tie;
- a base mountable to a support surface; and
- tool locating features for precisely mounting the automatic cable tie tool to the fixture, the tool locating features including at least one tool locating saddle provided on the main body on one side of the wire bundle support surface for securely receiving at least one tool locating stud on the automatic cable tie tool, and at least one tool locating pad provided on the main body spaced from the tool locating saddle for mating with a corresponding locating feature on the automatic cable tool.
13. The harness board fixture and push mount assembly of claim 12, wherein at least one of the tool locating features includes an angled guide surface that allows rough initial placement of the tool and guiding of the tool to a precise alignment position.
14. The harness board fixture and push mount assembly of claim 12, wherein the main body includes at least one removable adapter that can adapt the fixture to cable tie operations with or without a push mount.
15. The harness board fixture and push mount assembly of claim 12, wherein the recessed cavity is oriented to retain the push mount substantially perpendicular to the base.
16. The harness board fixture and push mount assembly of claim 15, wherein the recessed cavity is oriented to retain the push mount at an angle α of between 0 and 20 degrees from perpendicular.
17. The harness board fixture and push mount assembly of claim 12, wherein the push mount includes an outwardly protruding retention element and the retention latch includes at least one flexible cantilevered arm that yields to allow insertion of the push mount but interengages the retention element of the push mount to releaseably retain the push mount on the fixture.
18. The harness board fixture and push mount assembly of claim 12, wherein the push mount includes a retention cavity and the retention latch includes at least one flexible arm that yields to allow insertion of the push mount but interengages the cavity within the push mount to releasably retain the push mount on the fixture.
19. The harness board fixture and push mount assembly of claim 18, wherein the retention cavity is elongated and the retention latch allows limited vertical movement of the push mount relative to the fixture.
20. The harness board fixture and push mount assembly of claim 18, wherein the retention latch releasably secures the push mount in a fixed vertical position.
Type: Application
Filed: Oct 12, 2005
Publication Date: Aug 10, 2006
Inventors: Robert Levin (Braceville, IL), William Bernard (Darien, IL)
Application Number: 11/248,568
International Classification: B21F 9/02 (20060101);