This disclosure relates to a pre-assembled clamp for attaching elongated members to a supporting structure.
Interlocking clamps are used to secure elongated members such as tubes, conduits, hoses and wiring to a support such as an engine, transmission, body or frame of a vehicle or other structure. Interlocking clamps may include two or more parts that are assembled together and attached to a supporting structure. A grommet may be provided inside the interlocking clamps to reduce vibration and securely hold elongated members. Two part clamps are opened to receive the elongated members and are assembled together to secure elongated members to supporting structures.
One problem with one piece clamps is that they may be difficult to quickly assemble over elongated members and attach to supporting structures on an assembly line. Two-part clamps may be pre-assembled prior to being provided to a line to facilitate final assembly of clamps to supporting structures. Pre-assembled interlocking clamps may become separated during shipping or handling. Assembly line downtime may occur if pre-assembled interlocking clamps become separated when provided to an assembly line that is set-up to install pre-assembled interlocking clamps.
The above problems and other problems are addressed by this disclosure as summarized below.
According to one aspect of this disclosure, a clamp assembly is disclosed that includes a base clamp part and a retainer clamp part. The base clamp part has an elongated portion disposed in a plane and a T-shaped engagement end. An attachment flange is provided on an opposite end of the elongated portion from the engagement end. The retainer clamp part has a longitudinal axis and a transverse axis with an engaged end defining an opening and including a bendable tab that is movable from an assembly position to a retention position. The bendable tab is disposed in the opening to form a U-shaped opening with the tab aligned with transversely adjacent portions of the engaged end in the retention position. The tab has a distal end that is offset relative to the transversely adjacent portions of the engaged end in the assembly position. The T-shaped engagement end is retained in the U-shaped opening by the tab in the retention position and is insertable and removable from the U-shaped opening in the assembly position. Pre-assembled captivating clamps made according to this disclosure facilitate final assembly because they are prevented from becoming separated during assembly and are more ergonomic
According to a further aspect of this disclosure as it relates to a clamp assembly, the clamp assembly may comprise a base clamp and a retainer clamp part. The base clamp part may have a T-shaped engagement end including a neck portion and two ears. The retainer clamp part may have an engaged end defining a U-shaped opening and a passageway that opens into or is part of the U-shaped opening. The retainer clamp part includes a tab extending from a side of the U-shaped opening opposite the passageway that partially defines the U-shaped opening in a retention position. The tab has a distal end disposed adjacent the passageway with the neck portion being retained in the passageway by the tab and the ears in the retention position.
According to other aspects of this disclosure as it relates the clamp assembly, the T-shaped engagement end may be prevented from rotating within or being dislodged from the U-shaped opening in the retention position. The T-shaped engagement end may be rotatable within the U-shaped opening in the assembly position. The retainer clamp part may have a second attachment flange on an opposite longitudinal end from the engaged end that is secured to the attachment flange in the retention position. The first attachment flange defines a first opening and the second attachment flange defines a second opening. A fastener may be inserted through the first opening and the second opening to secure the clamp assembly to a supporting body.
The clamp assembly may further comprise a grommet assembled between the base clamp part and the retainer clamp part that defines at least one opening defined by a first clam shell portion and a second clam shell portion for receiving an elongated member. The grommet may include at least one plug, or knob, and the retainer clamp part may define a plug receiving opening for receiving the plug to retain the grommet in the clamp assembly. As used herein the term “plug” should be understood to include knobs or similar structures that may be retained in an opening to hold the grommet in the retainer clamp.
In one embodiment, the retainer clamp part may include a central portion that includes a portion parallel to and spaced from the elongated portion of the base clamp and a first spacer leg and a second spacer leg extending from the central portion toward the elongated portion. Alternatively, the retainer clamp part may include a central portion that defines a partially curved space relative to the elongated portion.
According to another aspect of this disclosure, a method of assembling a clamp is disclosed whereby a base clamp part is assembled to a retainer clamp part and then secured together by bending a tab that prevents disassembly by rotation of the parts. The method begins by providing a base clamp part having an elongated portion disposed in a plane that includes a T-shaped engagement end that is offset from the plane in a direction normal to the plane, and an attachment flange on an opposite end of the elongated portion. A retainer clamp part is provided that has a longitudinal axis and a transverse axis with an engaged end defining an opening and a bendable tab having a distal end extending into the opening. The tab is offset relative to transversely adjacent portions of the engaged end in an assembly position. The T-shaped engagement end is then inserted into the opening. The T-shaped engagement end is inserted in the opening to align the elongated portion of the base clamp with the longitudinal axis. The tab is then bent into the opening to form a U-shaped opening with the tab aligned with transversely adjacent portions of the engaged end in a retention position. The tab prevents rotating the T-shaped end within the U-shaped opening in the retention position.
The method may further comprise providing a grommet formed of an elastomeric material that includes at least one protruding plug, or knob, and assembling the grommet between the base clamp part and the retainer clamp part. The retainer clamp part may define a plug receptacle and the plug may be inserted into the plug receptacle to secure the grommet within the clamp.
According to other aspects of the method, the method may further comprise providing a grommet formed of an elastomeric material and assembling the grommet between the base clamp part and the retainer clamp part.
The base clamp part may define a base fastener opening and the retainer clamp part may define a retention fastener opening and the method may further comprise providing a fastener and a supporting member. The fastener is inserted into the base fastener opening and the retention fastener opening to secure the clamp to the supporting member.
Pre-assembled captivated clamps made according to this disclosure stay together as they are shipped to a manufacturing plant and do not become separated during shipment and storage for service parts applications.
Pre-assembled captivated clamps made according to this disclosure are more ergonomic than one-piece clamps that are more difficult to close over an elongated article such as a tube, conduit, hose or wiring that is intended to be attached to a supporting structure such as an engine, transmission, body or frame of a vehicle, or other structure.
The above aspects of this disclosure and other aspects will be described below with reference to the attached drawings.
The illustrated embodiments are disclosed with reference to the drawings. However, it is to be understood that the disclosed embodiments are intended to be merely examples that may be embodied in various and alternative forms. The figures are not necessarily to scale and some features may be exaggerated or minimized to show details of particular components. The specific structural and functional details disclosed are not to be interpreted as limiting, but as a representative basis for teaching one skilled in the art how to practice the disclosed concepts.
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The base clamp part 12 includes an elongated portion 18 that is provided with two ribs 20. The ribs 20 engage indentations (not shown) formed on the bottom of the grommet 16. The ribs 20 are provided to prevent the grommet 16 from becoming dislodged from the base clamp part 12 and to strengthen the clamp. The base clamp part 12 includes a T-shaped engagement end 22. The T-shaped engagement end 22 includes a neck portion 24 and ears 26 that are formed in the generally T-shaped portion of the base clamp part 12. An attachment flange 28 is provided on the opposite end of the base clamp part 12 from the T-shaped engagement end 22. The attachment flange 28 defines an opening 30 that is adapted to receive a fastener (not shown) that is used to attach the clamp assembly 10 to a supporting structure. As shown in
The retainer clamp part 14 includes an engaged end 32 that is engaged by the T-shaped engagement end 22 of the base clamp part 12. The engaged end 32 defines a U-shaped opening 34. A passageway 36 is formed to open into the U-shaped opening 34 on the opposite side of the U-shaped opening 34 from a locking tab 38. Locking tab 38 includes a distal end 40. The locking tab 38 is offset from transversely adjacent portions 41 of the engaged end 32 in an assembly position and is aligned with the transversely adjacent portions 41 in the retention position. The retainer clamp part 14 includes two ribs 42 that correspond to the ribs 20 formed on the base clamp part 12. The ribs 20, 42 function to facilitate retaining the grommet 16 within the clamp assembly 10. The retention clamp part 14 also includes an attachment end 44 that defines an opening 46. Opening 46 is aligned with opening 30 in the base clamp part 12 to receive a fastener (not shown) as previously described.
The grommet 16 includes a base 48 and a cap 50. The grommet 16 is preferably an elastomeric or plastic member. The base 48 and cap 50 are connected together by a living hinge area. The base 48 and cap 50 are separated to receive articles, such as elongated wires, tubes or conduits within one or more article openings 52. As shown in
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The embodiments described above are specific examples that do not describe all possible forms of the disclosure. The features of the illustrated embodiments may be combined to form further embodiments of the disclosed concepts. The words used in the specification are words of description rather than limitation. The scope of the following claims is broader than the specifically disclosed embodiments and also includes modifications of the illustrated embodiments.
This application is a division of U.S. application Ser. No. 14/810,654 filed Jul. 28, 2015, the disclosure of which is hereby incorporated in its entirety by reference herein.
Number | Date | Country | |
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Parent | 14810654 | Jul 2015 | US |
Child | 15230781 | US |