Low profile vibratory alerting device

• US 5,175,459 A
• Filed: 08/19/1991
• Issued: 12/29/1992
• Est. Priority Date: 08/19/1991
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Ashley, Richard A., Benedetto, Joseph C., Danial, Alfred N.
• Primary Examiner(s): Beha, Jr., William H.
• Assistant Examiner(s): REBSCH, DONALD
• Application Number:
  US07/747,067
• Time in Patent Office: 498 Days
• Field of Search: 310/51, 310/81, 310/268, 340/311.1, 340/407, 434/113, 384/255
• US Class Current: 310/81
• CPC Class Codes: G08B 6/00 Tactile signalling systems, e.g. personal calling systems
• CPC Class Codes: H02K 7/063 integrally combined with motor parts, e.g. motors with eccentric rotors

Abstract

An electronic device, such as a selective call receiver, includes a housing (302) for the electronic device preferably having a rigid member (304) fixedly integrally attached thereto and extending therefrom, the rigid member constructed to cooperatively connect with a rotatable body (308) and to secure the rotatable body (308) to the housing (302) while allowing the rotatable body (308) to rotate about the rigid member (304), a circuit supporting substrate (301) arranged within the housing (302) coupled thereto, and an alerting device (300) for providing a vibratory alert. The alerting device (300) includes coils (320) on the circuit supporting substrate (301) arranged about the rigid member (304), with each coil (322) capable of being selectively energized. The alerting device (300) also includes a body (308) including magnetic material, preferably including a wedge-shaped mass (314), the body (308) rotatable about the rigid member (304) in a plane substantially parallel to the circuit supporting substrate (301) for directly generating vibrations in the housing (302) via the rigid member (304). Lastly, a selective energizing device (400) selectively energizes the coils (320) to rotate the body (308), to provide the vibratory alert.

Claims

1. An electronic device, comprising:

a housing for the electronic device having a rigid member integrally attached thereto and extending therefrom, the rigid member constructed to cooperatively connect with a rotatable body and to secure the rotatable body to the housing while allowing the rotatable body to rotate about the rigid member;

a circuit supporting substrate arranged within the housing and coupled thereto; and

alerting means for providing a vibratory alert, the alerting means comprising;

a plurality of coils disposed on the circuit supporting substrate and arranged about the rigid member with each coil capable of being selectively energized;

a body comprising magnetic material and coupling to the rigid member, the body rotatable about the rigid member in a plane substantially parallel to the circuit supporting substrate for directly generating vibrations in the housing via said rigid member; and

selective energizing means for selectively energizing the plurality of coils to rotate the body to provide the vibratory alert.

2. The electronic device of claim 1, wherein the body comprises:

a non-magnetic disc having a substantially circular periphery and an aperture substantially concentric with the substantially circular periphery, the aperture allowing the non-magnetic disc to be secured to the rigid member and to rotate thereon; and

a wedge-shaped mass comprising magnetic material coupled to the non-magnetic disc.

3. The electronic device of claim 1, wherein the rigid member is integrally formed in the housing.

4. The electronic device of claim 1, wherein the rigid member comprises a tip portion having a plurality of flexible extensions, and the rotatable body includes an aperture to cooperatively connect with the rigid member via the flexible extensions to secure the rotatable body to the housing while allowing the rotatable body to rotate about the rigid member.

5. The electronic device of claim 1, wherein the rigid member comprises plastic material formed as part of the housing.

6. The electronic device of claim 1, wherein the plurality of coils is etched onto the circuit supporting substrate along with other electronic circuits for the electronic device.

7. The electronic device of claim 1, wherein the body comprises a wedge-shaped mass comprising magnetic material having an aperture located substantially at the point of the geometrically shaped mass for coupling the wedge-shaped mass to the rigid member via the aperture, the wedge-shaped mass comprising magnetic material substantially providing the mass for the rotatable body, and further wherein the selective energizing means selectively energizes at least one coil of the plurality of coils to provide a magnetic field corresponding to one of a north magnetic pole or a south magnetic pole at the at least one coil to rotate the body to provide the vibratory alert.

8. The electronic device of claim 7, wherein the wedge-shaped mass comprising magnetic material is the rotatable body for providing the vibratory alert, and comprises north and south magnetic poles arranged at least at first and second ends of the outer radius of the wedge-shaped mass.

9. The electronic device of claim 8, wherein the plurality of coils comprises first and second coils arranged substantially about a circumference with an angular distance corresponding to the first and second ends of the outer radius of the geometrically shaped mass, and wherein the selective energizing means contemporaneously energizes the first and second coils to provide a magnetic field corresponding to one of a north magnetic pole or a south magnetic pole at both the first and second coils when the first and second ends of the geometrically shaped mass are substantially oriented with the first and second coils, respectively, for rotating the body to provide the vibratory alert.

10. The electronic device of claim 8, wherein the plurality of coils is arranged substantially about a circumference corresponding to the outer radius of the wedge-shaped mass and the selective energizing means contemporaneously energizes the plurality of coils with at least one alternating current signal, such that each coil alternates between a north and south magnetic pole and adjacent coils are energized to contemporaneously alternate between north and south magnetic poles, to provide north/south adjacent magnetic pole pairs operating to attract and repel each magnetic pole of the wedge-shaped mass.

11. A selective call receiver, comprising:

receiver means for selectively receiving and presenting a message;

a housing for the selective call receiver having a rigid member integrally attached thereto and extending therefrom, the rigid member constructed to cooperatively connect with a rotatable body and to secure the rotatable body to the housing while allowing the rotatable body to rotate about the rigid member;

a circuit supporting substrate arranged within and coupled to the housing and having the receiver means coupled thereto; and

alerting means for providing a vibratory alert, the alerting means comprising;

a plurality of coils disposed on the circuit supporting substrate and arranged about the rigid member with each coil capable of being selectively energized;

a rotatable body coupled to the rigid member, the body rotatable about the rigid member in a plane substantially parallel to the circuit supporting substrate for directly generating vibrations in the housing via said rigid member; and

selective energizing means for selectively energizing the plurality of coils to rotate the body to provide the vibratory alert.

12. The selective call receiver of claim 11, wherein the rigid member is integrally formed in the housing and extending from the inner surface thereof.

13. The selective call receiver of claim 11, wherein the rigid member comprises plastic material formed as part of the housing.

14. The selective call receiver of claim 11, wherein the rigid member comprises a tip portion having a plurality of flexible extensions, and the rotatable body includes an aperture to cooperatively connect with the rigid member via the flexible extensions to secure the rotatable body to the housing while allowing the rotatable body to rotate about the rigid member.

15. The selective call receiver of claim 11, wherein the plurality of coils is etched onto the circuit supporting substrate along with other electronic circuits for the selective call receiver.

16. The selective call receiver of claim 11, wherein the body is a wedge-shaped mass comprising magnetic material having an aperture located substantially at the point of the wedge-shaped mass for coupling the wedge-shaped mass to the rigid member via the aperture, and further wherein the selective energizing means selectively energizes at least one coil of the plurality of coils to provide a magnetic field corresponding to one of a north magnetic pole or a south magnetic pole at the at least one coil to rotate the wedge-shaped mass to provide the vibratory alert.

17. The selective call receiver of claim 16, wherein the wedge-shaped mass comprises magnetic material having north and south magnetic poles arranged at least at first and second ends of the outer radius of the wedge-shaped mass.

18. The selective call receiver of claim 17, wherein the plurality of coils comprises first and second coils arranged substantially about a circumference with an angular distance corresponding to the first and second ends of the outer radius of the wedge-shaped mass, and wherein the selective energizing means contemporaneously energizes the first and second coils to provide a magnetic field corresponding to one of a north magnetic pole or a south magnetic pole at both the first and second coils when the first and second ends of the wedge-shaped mass are substantially oriented with the first and second coils, respectively, for rotating the body to provide the vibratory alert.

19. The selective call receiver of claim 17, wherein the plurality of coils is arranged substantially about a circumference corresponding to the outer radius of the wedge-shaped mass and the selective energizing means contemporaneously energizes the plurality of coils by providing at least one alternating current signal to the plurality of coils, such that each coil alternates between a north and south magnetic pole and adjacent coils are energized to contemporaneously alternate between north and south magnetic poles, to provide north/south adjacent magnetic pole pairs operating to attract and repel each magnetic pole of the wedge-shaped mass.

20. A selective call receiver, comprising:

receiver means for selectively receiving a message;

a housing for the selective call receiver;

a circuit supporting substrate having a rigid member fixedly attached thereto and extending therefrom, and having the receiver means coupled thereto, the circuit supporting substrate coupled to the housing and the rigid member including a tip portion having a plurality of flexible extensions for coupling to a rotatable body to secure the rotatable body to the housing while allowing the rotatable body to rotate about the rigid member; and

alerting means for providing a vibratory alert, the alerting means comprising;

a plurality of coils disposed on the circuit supporting substrate and arranged about the rigid member with each coil capable of being selectively energized;

a rotatable counterweight coupled to the rigid member, the counterweight rotatable about the rigid member in a plane substantially parallel to the circuit supporting substrate; and

selective energizing means for selectively energizing the plurality of coils to rotate the counterweight to provide the vibratory alert.

21. An electronic device, comprising:

a housing for the electronic device;

a circuit supporting substrate having a rigid member fixedly attached thereto and extending therefrom, the circuit supporting substrate coupled to the housing, and the rigid member including a tip portion having a plurality of flexible extensions for coupling to a rotatable body to secure the rotatable body to the housing while allowing the rotatable body to rotate about the rigid member; and

alerting means for providing a vibratory alert, the alerting means comprising;

a plurality of coils disposed on the circuit supporting substrate and arranged about the rigid member with each coil capable of being selectively energized;

a body rotatably coupled to the rigid member, the body rotatable about the rigid member in a plane substantially parallel to the circuit supporting substrate; and

selective energizing means for selectively energizing the plurality of coils to rotate the body to provide the vibratory alert.

22. A pager, comprising:

a plastic housing for the pager having an inner surface with a plastic molded pin structure extending therefrom;

a printed circuit board coupled to the housing and arranged within the housing in a plane substantially parallel to the inner surface;

receiver means, coupled to the printed circuit board, for selectively receiving a message;

controller means coupled to the printed circuit board and to the receiver means for presenting the received message; and

tactile alerting means responsive to the controller means for providing a tactile alert along with receiving the message, the tactile alerting means comprising;

a plurality of coils etched on the printed circuit board along with other electronic circuits for the pager, the plurality of coils arranged about a circumference that is substantially concentric with the plastic molded pin structure, each coil capable of being selectively energized;

a wedge-shaped magnetic counterweight having a bearing that cooperatively connects with the pin structure to secure the magnetic counterweight to the housing while allowing the magnetic counterweight to rotate about the circumference; and

selective energizing means responsive to the controller means for selectively providing a direct current to energize at least one coil of the plurality of coils, and consequently to actuate the rotating wedge-shaped magnetic counterweight to provide the tactile alert.