Connection and features for interchangeable nosecone for a trolling motor

Patent metadata

Field	Value
Publication number	US-10377459-B2
Application number	US-201715834464-A
Country	US
Kind code	B2
Filing date	Dec 7, 2017
Priority date	Mar 28, 2017
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

Various implementations described herein are directed to a trolling motor including an electric motor having a propeller coupled thereto, a shaft configured for coupling the electric motor to a watercraft. The shaft is configured to rotate relative to the watercraft and the shaft defines an internal passage. The trolling motor also includes a housing that encapsulates the motor, a removable nosecone operably coupled to the housing opposite the propeller and configured to encapsulate at least one marine device. One or more mechanical connection features are provided to enable removable connection of the nosecone to the remainder of the trolling motor housing. One or more electrical connection features are provided to enable electrical connection of the at least one marine device through the trolling motor housing.

First claim

The invention claimed is:

1. A trolling motor assembly comprising:
an electric motor with a propeller coupled thereto;
a shaft configured to couple the electric motor to a watercraft, wherein the shaft is configured to rotate relative to the watercraft, wherein the shaft defines an internal passage;
a motor housing that encapsulates the electric motor, wherein the housing defines a first end and a second end, wherein the propeller is positioned proximate the second end, wherein the motor housing comprises at least one motor housing electrical connection feature proximate the first end and at least one motor housing mechanical connection feature proximate the first end;
a removable nosecone that defines a nosecone housing that comprises at least one nosecone electrical connection feature and at least one nosecone mechanical connection feature, wherein the nosecone housing is configured to encapsulate at least one marine device and at least one nosecone electrical cable, wherein the at least one nosecone electrical cable electrically connects the at least one marine device to the at least one nosecone electrical connection feature, wherein the at least one nosecone mechanical connection feature is configured to removably attach to the at least one motor housing mechanical connection feature to enable removable coupling between the nosecone housing and the first end of the motor housing, wherein the at least one nosecone electrical connection feature is configured to electrically connect with the at least one motor housing electrical connection feature in an instance in which the at least one nosecone mechanical connection feature is attached to the at least one motor housing mechanical connection feature; and
at least one motor housing electrical cable that leads from the at least one electrical connection feature of the motor housing through the internal passage of the shaft to enable electrical signals to be transmitted between the at least one marine device within the nosecone housing and a computing device in an instance in which the at least one nosecone electrical connection feature is electrically connected to the at least one motor housing electrical connection feature, wherein the at least one motor housing electrical cable is contained within the internal passage of the shaft so as to protect the at least one motor housing electrical cable while still enabling rotation of the shaft and motor housing,
a first watertight bulkhead that seals the motor housing at the first end; and
a second watertight bulkhead that seals the removable nosecone;
wherein the nosecone mechanical connection feature is disposed on the second watertight bulkhead and the motor housing mechanical connection feature is disposed on the first water tight bulkhead such that the second watertight bulkhead is configured to be coupled to the first watertight bulkhead.

2. The trolling motor assembly of claim 1 , wherein the removable nosecone is interference fit about a periphery of the first watertight bulkhead.

3. The trolling motor assembly of claim 1 , wherein the first watertight bulkhead comprises an electrical cable aperture allowing the electrical cable to pass therethrough, wherein the aperture includes a sealing element disposed in the electrical cable aperture to provide a water tight barrier between the motor housing and the removable nosecone.

4. The trolling motor assembly of claim 1 , wherein the nosecone mechanical connection feature comprises a retention element configured to retain the removable nosecone in engagement with the first watertight bulkhead.

5. The trolling motor assembly of claim 4 , wherein the motor housing mechanical connection feature comprises a bolt receiver operably coupled to the bulkhead, and
wherein the retention element comprises a retention bolt configured to engage the bolt receiver, wherein the retention bolt comprises a bolt head or retention nut configured to apply retention force to the removable nosecone in response to tightening of the retention bolt.

6. The trolling motor assembly of claim 5 , wherein the removable nosecone comprises a through aperture configured to receive the retention bolt therethrough, and wherein the trolling motor further comprises:
a bolt cap configured to close the through aperture in the removable nosecone.

7. The trolling motor assembly of claim 1 , wherein the motor housing mechanical connection feature comprises threads disposed about an outer periphery of the bulkhead and the nosecone mechanical connection feature comprises complementary threads disposed on an inner periphery of the nosecone.

8. The trolling motor assembly of claim 1 , wherein the nosecone mechanical connection feature comprises a plurality of retention screws disposed through a sidewall of the removable nosecone and at least partially through the motor housing.

9. The trolling motor assembly of claim 1 , further comprising;
a circular connector configured to retain the removable nosecone in engagement with the motor housing.

10. The trolling motor assembly of claim 9 , wherein the nosecone mechanical connection feature and the motor housing mechanical connection feature comprise a ridge or groove disposed about an outer periphery of the nosecone and motor housing, and
wherein the circular connector is disposed about the removable nosecone and motor housing, such that the ridge or groove in the nosecone and motor housing is engaged by a complementary ridge or groove disposed on the circular connector in response to fastening the circular connector to the removable nosecone and the motor housing.

11. The trolling motor assembly of claim 10 , wherein the circular connector comprises a hinged connector, and wherein the hinged connector is fastened by a screw, a T lock, or a ratchet strip.

12. The trolling motor assembly of claim 11 , wherein the hinged connector is anchored to the motor housing or removable nosecone.

13. The trolling motor assembly of claim 1 , wherein the nosecone mechanical connection feature or the motor housing mechanical connection feature comprise one or more retention clips and the other of the motor housing mechanical connection feature or the nosecone mechanical connection feature comprises one or more complementary recesses, wherein the one or more retention clips extend longitudinally into the one or more corresponding recesses, wherein the one or more retention clips comprise a protrusion configured to engage the one or more recesses to retain the removable nosecone in engagement with the motor housing.

14. The trolling motor assembly of claim 1 , wherein the nosecone mechanical connection feature or the motor housing mechanical connection feature comprises one or more locking elements and the other of the nosecone mechanical connection feature or the motor housing mechanical connection feature comprises a locking ring configured to engage the one or more locking elements disposed on the other of the removable nosecone or the motor housing, wherein rotation of the locking ring to a locking position causes the one or more locking elements to engage to cause the removable nosecone to tighten against the motor housing.

15. The trolling motor assembly of claim 1 , wherein the removable nosecone comprises an interchangeable component module, wherein the at least one marine device is disposed within the interchangeable component module.

16. The trolling motor assembly of claim 15 , wherein the interchangeable component module or removable nosecone comprises a guide configured to be received by a slot disposed in the other of the removable nosecone or the inter

Assignees

• Navico Holding As

Inventors

• Burton Aaron J
• Laster Matthew
• Clark Jeremiah
• Crawford Christopher Dean
• Bailey Paul Robert

Classifications

• G10K11/006

  Transducer mounting in underwater equipment, e.g. sonobuoys · CPC title

• G01S15/96

  for locating fish · CPC title

• B63H20/32 Primary

  Housings {(air intakes for outboard engines F02M35/167)} · CPC title

• B63B49/00

  Arrangements of nautical instruments or navigational aids (nautical measuring instruments G01C; radio navigation, analogous arrangements using other waves G01S) · CPC title

• B63H20/007

  Trolling propulsion units (trolling plates for slowing down B63H25/50; dynamo-electric machines of trolling units H02K) · CPC title