Starter motor assistance apparatus

Patent metadata

Field	Value
Publication number	US-10718306-B2
Application number	US-201816137644-A
Country	US
Kind code	B2
Filing date	Sep 21, 2018
Priority date	Sep 21, 2018
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

A starter motor assist mechanism is provided. The starter motor assist mechanism may include a housing, a solenoid, and a hammer. The housing may be attachable to a starter motor. The solenoid may be disposed within the housing, and the hammer may be connected to the solenoid. The solenoid may move the hammer from a retracted position to an extended position for striking the starter motor.

First claim

What is claimed is:

1. A starter-motor-assist mechanism comprising:
a housing attachable to a starter motor;
a solenoid disposed within the housing; and
a hammer connected to the solenoid, wherein the solenoid moves the hammer from a retracted position to an extended position for striking the starter motor.

2. The starter-motor-assist mechanism of claim 1 , wherein the starter motor includes a rotating shaft that rotates about an axis of rotation and wherein the hammer moves from the retracted position to the extended position along a direction that is transverse to the axis of rotation.

3. The starter-motor-assist mechanism of claim 2 , wherein the hammer includes a contact surface that is arranged parallel to the axis of rotation.

4. The starter-motor-assist mechanism of claim 1 , further comprising a controller configured to send signals to activate and deactivate the solenoid, wherein when the solenoid is activated the hammer is moved to the extended position and wherein when the solenoid is deactivated the hammer is returned to the retracted position.

5. The starter-motor-assist mechanism of claim 4 , further comprising a return spring disposed between the housing and the hammer and configured to bias the hammer to the retracted position.

6. The starter-motor-assist mechanism of claim 5 , wherein the controller is further configured to alternate the signals at a predetermined frequency over a predetermined period.

7. The starter-motor-assist mechanism of claim 5 , wherein the controller is further configured to alter power provided to the solenoid to alter force applied by the hammer.

8. The starter-motor-assist mechanism of claim 1 , further comprising a U-Shaped mounting bracket that includes a medial portion and a pair of arms extending therefrom that include attachment portions spaced apart from the medial portion.

9. The starter-motor-assist mechanism of claim 1 , further comprising a dampening member attached to the hammer and configured to engage the starter motor.

10. A vehicle starting system comprising:
a starter motor, provided with a casing defining a yoke that surrounds an armature, configured to engage and start an engine; and
a starter-assist device, mounted on the casing, including,
a housing,
a solenoid disposed within the housing, and
a hammer operatively connected to the solenoid, wherein when the solenoid is powered, the hammer moves from a retracted position to an extended position to strike the casing.

11. The vehicle starting system of claim 10 , wherein the hammer is positioned adjacent to the yoke of the starter motor.

12. The vehicle starting system of claim 10 , further comprising a controller configured to, responsive to the starter motor receiving power and the starter motor failing to start the engine, send a signal to provide power and cease power to the solenoid.

13. The vehicle starting system of claim 12 , further comprising a starter-assist button, wherein the controller is further configured to send a signal to power the solenoid in response to actuation of the starter-assist button.

14. The vehicle starting system of claim 10 , further comprising a dampening member attached to the hammer to form an intermediate surface between the hammer and the yoke.

15. A starter-motor-assist system comprising:
a starter motor, including a casing, configured to rotate and start an engine;
a first solenoid mechanically connected to the starter motor and configured to close a set of contacts to provide power to the starter motor;
a starter-assist mechanism including a second solenoid and a hammer operatively coupled to the second solenoid and moveable from a retracted position to an extended position to strike the casing; and
a controller configured to, responsive to the first solenoid closing the set of contacts and the starter motor not rotating, send a signal to provide power to the second solenoid so that the hammer strikes the casing to facilitate rotation of the starter motor.

16. The starter-motor-assist system of claim 15 , further comprising a starter-assist button, wherein the controller is further configured to send the signal in response to actuation of the starter-assist button.

17. The starter-motor-assist system of claim 15 , wherein the controller is further configured to provide and cease power to the second solenoid so that the hammer strikes the starter multiple times over a predetermined period.

18. The starter-motor-assist system of claim 17 , wherein the controller is further configured to provide and cease power to the second solenoid at a predetermined frequency.

19. The starter-motor-assist system of claim 18 , wherein the predetermined frequency is greater than or equal to 1 Hz.

20. The starter-motor-assist mechanism of claim 15 , wherein the starter-assist mechanism is attached to the first solenoid and wherein the controller is further configured to send a signal to provide power to the second solenoid so that the hammer strikes the first solenoid to facilitate electrical contact from the first solenoid to the starter motor.

Assignees

• Denso Int America Inc

Inventors

• Saathoff Scott
• Aksovski Ilco Eli

Classifications

• F02N15/006

  Assembling or mounting of starting devices · CPC title

• F02N11/0803

  characterised by means for initiating engine start or stop (F02N11/0814 takes precedence) · CPC title

• F02N15/10

  Safety devices not otherwise provided for · CPC title

• F02N19/001

  Arrangements thereof · CPC title

• F02N2200/046

  Energy or power necessary for starting · CPC title