Patent Application
20120272776
The present invention relates generally to a mechanism for actuating a vehicle door handle, and particularly to a cable fitting or abutment for engaging and disengaging an inside door handle located outboard of a door trim pad.
Typically a vehicle assembler requires training to learn how to attach a cable to a door handle located on the door and outboard of a door trim pad. When the door is being serviced, technicians may be puzzled regarding the proper way to remove the door abutment of the actuating cable from its attachment to the door handle. Occasionally, the cable is pulled in an attempt to disconnect the cable assembly, or the technician may use a screw driver incorrectly to remove the abutment connection. In either case, the abutment is sometimes broken.
Currently, door handle actuation employs tree-type abutments that attach on the inner surface of the handle. Such abutments require a tool for removal.
A cable fitting includes a hollow cylinder sized to receive a portion of a sheath therein; and a lever including a blade supported on the cylinder; a pivot about which the blade pivots; an engagement member secured to the blade and spaced from the pivot in a first direction; and a tab secured to the blade and including a surface spaced from the pivot in a second direction opposite the first direction and on which force can be applied to elastically pivot the engagement member away from an engaged position.
The elastic operation of the lever occurs due to elastic flexure without need for a spring.
The abutment design allows technicians, operators and service mechanics to connect and disconnect the cable to the inside handle without the use of a tool. A lever on the abutment can be alternately depressed manually without use of a tool to disengage the cable assembly and released manually without a tool to reengage the cable assembly such that pivoting motion of the lever is conducted within the ergonomic constraints of a 45 Newton thumb load.
The abutment design is intuitive for connection and disconnection, and is less likely to break due to incorrect tool usage or failure to apply a correct connection and disconnection technique. The lever may enable installation and removal of the cable assembly such that when the lever is depressed, the front end of the abutment deflects upward, thereby allowing the abutment to easily enter or exit a connection to the inside door handle.
The scope of applicability of the preferred embodiment will become apparent from the following detailed description, claims and drawings. It should be understood, that the description and specific examples, although indicating preferred embodiments of the invention, are given by way of illustration only. Various changes and modifications to the described embodiments and examples will become apparent to those skilled in the art.
Referring now to
The cable end fitting 10, which is preferably formed of molded plastic material, includes a blade portion 22, supported on the outer surface of sleeve member 12; teeth 24 extending from a lower surface of the blade 22; a service tab 26, supported on blade 22 for actuating the teeth 24; a service tab stop 28, located at an inboard lateral side of the sleeve member 12; and a projection 30 extending from an end of the sleeve member opposite the location of the teeth 24. When tab 26 is depressed, contact between the tab 26 and the tab stop 28 limits the range of pivotal displacement of the tab 26.
Projection 30 aids in manually gripping the cable fitting 10 during installation and removal, and helps prevent entangling the fitting 10 with other cables in the vehicle door assembly. Corrugations 32 on the outer service tab 26 indicate intuitively a place where an operator can apply pressure to depress the service tab 26.
Blade 22 is connected to the outer surface of sleeve member 12 at a relatively narrow pivot surface 34, which extends laterally across the outer surface of the cylinder. The location of the corrugations 32, where force is applied to the service tab 26, is spaced along sleeve member 12 in a first direction from the pivot 34. Teeth 24 are spaced along sleeve member 12 in a second direction opposite the first direction from the pivot 34. This arrangement forms a lever that actuates teeth 24 into and out of engagement.
When the service tab 26 is depressed, blade 22 and teeth 24 pivot upward due to elastic flexure that occurs at the pivot 34. When tab 26 is released, blade 22 and teeth 24 pivot downward due to elastic flexure that occurs at pivot 34.
The cable end fitting 10 and cable 14 are secured to bracket 36 without need for any tool by securing ball 20 to the cylindrical passage 46 and passing the teeth 24 across the surface of the upper flange 40, preferably while the service tab 26 is depressed manually, then releasing the tab 26, and allowing teeth 24 to pivot downward into engagement with surface 38 of the upper flange 40 of bracket 36.
The cable end fitting 10 and cable 14 are released from engagement with bracket 36 without the need for any tool by manually depressing tab 26, thereby causing teeth 24 to pivot upward and to disengage surface 38 of the upper flange 40 of bracket 36. Then the ball 20 is removed from the passage 46, and rod 18 is displaced laterally in the space between the upper and lower flanges 40, 42 of bracket 36.
While certain embodiments of the present invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention as defined by the following claims.
