Indexing changeover mechanism for use with a plurality of integrated towing accessories
An indexing block positioned within the receiver hitch and connected to a tri-ball block having a plurality of towing accessories (e.g., different sized hitch balls, pintles, hooks, etc.) on its separate, exterior facings. A biasing member and lock cooperate with an internal, coaxial plunger, thereby allowing for selective rotation of the tri-block relative to the indexing block, without the need to completely remove the assembly from the hitch receiver itself. Ball bearings fitted within the indexing block facilitate movement of the plunger and tri-block relative to the indexing block when the assembly is being rotated to position a new towing accessory in its desired place.
1. A towing apparatus having a plurality of interchangeable towing accessories, the towing apparatus comprising:
a multi-face block having:
a distal body member defining a plurality of separate facings;
a proximally extending engagement shaft having a plurality of through holes, an annular groove on an outer facing surface, and a shoulder member having a non-circular shape attaching the shaft to the distal body;
a locking assembly positioned in the distal body; and
a plunger coaxially fitted within the engagement shaft and connecting to the locking assembly;
an indexing block having a central interior channel with an annular groove formed on the inner surface of the channel, wherein the engagement shaft is received within and is configured to translate and rotate within the channel; and
at least one ball bearing positioned between the multi-face block and the indexing block;
wherein the multi-face block is configured to be placed in a locked position and an unlocked position relative to the indexing block to allow a selected towing accessory to be positioned in a use position.
2. The towing apparatus according to claim 1 wherein the plunger has an annular indent in communication with at least one of the ball bearings and at least one through hole positioned along the elongated shaft.
3. The towing apparatus according to claim 2 wherein, in the locked position, the at least one ball bearing is moved into abutting engagement with the groove of the indexing block and, in the unlocked position, the at least one ball bearing is moved out of abutting engagement with the groove and positioned within the indent of the plunger.
4. The towing apparatus according to claim 1 wherein the elongated shaft includes a shoulder having a non-circular cross section configured to be selectively received within a receiver portion on the indexing block wherein the multi-face block is prevented from rotating relative to the indexing block when the shoulder is positioned within the receiver portion.
5. The towing apparatus according to claim 1 wherein the engagement shaft further comprises at least one stopping tab to prevent the multi-face block from being removed from the indexing block.
6. The towing apparatus according to claim 1 wherein the engagement shaft further comprises a proximal cap.
7. The towing apparatus according to claim 1 wherein the locking assembly includes a locking tab, an insert, and a biasing member wherein the biasing member provides a bias force in a distal direction relative to the multi-face block.
8. The towing apparatus according to claim 7 wherein the locking assembly is attached to the plunger.
9. The towing apparatus according to claim 1 wherein the indexing block includes at least one transverse hole for selectively receiving a dowel, and wherein the dowel is configured to be positioned within an annular groove of the engagement shaft of the multi-face block.
10. The towing apparatus according to claim 1 wherein a distal opening of the channel includes a transverse cross sectional shape that cooperates with the transverse cross sectional shape of the shaft where the shaft attaches to the distal body.
11. A quick changeover mechanism comprising:
a rotating multi-face block assembly that includes a main body having a plurality of surface for supporting towing accessories and engagement shaft extending from the main body;
an indexing block attachable to a hitch receiver;
a biasing member and lock cooperate with a coaxial plunger, thereby allowing for selective rotation of the multi-face block relative to the indexing block, without the need to completely remove the assembly from the hitch receiver.
12. The mechanism of claim 11 further comprising at least one ball bearing fitted within the indexing block to facilitate movement of the plunger and multi-face block relative to the indexing block when the assembly is being rotated to position a towing accessory in a desired place.
13. The mechanism of claim 11 wherein the towing accessories include different sized hitch balls, pintles, or hooks.
14. The mechanism of claim 13 wherein each of the towing accessories are positioned on a separate, exterior face of the multi-face block.
15. The mechanism of claim 14 wherein the multi-face block comprises three exterior faces.
16. The mechanism of claim 11 wherein, in a locked position, at least one ball bearing is moved into abutting engagement with a groove of the indexing block and, in the unlocked position, the at least one ball bearing is moved out of abutting engagement with the groove and positioned within an indent of the plunger.
17. The towing apparatus according to claim 11 wherein the engagement shaft includes a shoulder having a non-circular cross section configured to be selectively received within a receiver portion on the indexing block wherein the multi-face block is prevented from rotating relative to the indexing block when the shoulder is positioned within the receiver portion.
18. A method of providing a plurality of towing accessories for a vehicle without the need to completely remove a towing assembly from a hitch receiver comprising:
providing a rotating assembly that includes a multi-face block having a plurality of towing accessories and an engagement shaft extending axially from the multi-face block;
inserting the engagement shaft of the multi-face block into a channel of an indexing block; and
selectively attaching the indexing block to a hitch receiver of a vehicle;
wherein the rotating assembly includes a lock assembly having a bias member configured to cooperate with a coaxial plunger, thereby allowing for selective rotation of the multi-face block relative to the indexing block.
19. The method of claim 18 wherein the engagement shaft of the multi-face block includes at least one ball bearing that cooperates with the plunger, and a groove along an inner surface of the indexing block to facilitate movement of the plunger and multi-face block relative to the indexing block when the assembly is being rotated to position a new towing accessory in a desired place.
20. The method of claim 18 further comprising:
selectively placing the rotating assembly in a locked position to prevent translational movement between the multi-face block and the indexing block, wherein at least one ball bearing is moved into abutting engagement with a groove of the indexing block; and
selectively placing the rotating assembly in an unlocked position to allow translational movement between the multi-face block and the indexing block, wherein the at least one ball bearing is positioned within an indent of the plunger.
21. The method of claim 20 further comprising:
selectively placing the rotating assembly in a locked position to prevent rotational movement between the multi-face block and the indexing block, wherein a shoulder having a non-circular cross section is positioned within a receiver portion on the indexing block; and
selectively placing the rotating assembly in an unlocked position to allow rotational movement between the multi-face block and the indexing block, wherein said shoulder is translated from the receiver portion of the indexing block.