VIBRATION MEMBRANE ASSEMBLY FOR SPEAKER, SPEAKER AND METHOD FOR PRODUCING THE ASSEMBLY

• US 20160205487A1
• Filed: 01/13/2016
• Published: 07/14/2016
• Est. Priority Date: 01/13/2015
• Status: Active Grant

• Current Assignee: Sound Solutions International Company, Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Knowles IPC Sendirian Berhad (Knowles Corporation)
• Inventors: Seiwald, Bernhard, Fischer, Peter, Hsieh, Gary, Lembacher, Christian, Timmerer, Armin, Frasl, Ewald
• Granted Patent: US 9,769,583 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04R 2231/001 Moulding aspects of diaphragm or surround
• CPC Class Codes: H04R 2231/003 Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms
• CPC Class Codes: H04R 31/003 for diaphragms or their outer suspension
• CPC Class Codes: H04R 7/22 Clamping rim of diaphragm or cone against seating

Abstract

The present invention discloses a vibration membrane assembly for a speaker, a method for producing a vibration membrane assembly and a speaker. The assembly comprises a vibration membrane and a vibration membrane carrier ring. The method comprises providing a first thermal molding die having a molding side, the molding side having a profile which is complementary to that of the second side of the vibration membrane assembly, putting the vibration membrane carrier ring onto the molding side of the first thermal molding die and laying a vibration membrane blank onto the vibration membrane carrier ring to bring the vibration membrane blank in contact with the vibration membrane carrier ring, applying a pressure to the vibration membrane blank against the vibration membrane carrier ring to nest and fix the vibration membrane blank on the vibration membrane carrier ring to form the vibration membrane assembly, removing the pressure off the vibration membrane blank and separating the vibration membrane assembly from the first thermal molding die.

Claims

1. A method for producing a vibration membrane assembly for a speaker, the assembly having has a first side and a second side opposite to the first side, and comprising a vibration membrane and a vibration membrane carrier ring, the method comprising:

providing a first thermal molding die having a molding side, the molding side having a profile which is complementary to that of the second side of the vibration membrane assembly;

putting the vibration membrane carrier ring onto the molding side of the first thermal molding the and laying a vibration membrane blank onto the vibration membrane carrier ring to bring the vibration membrane blank in contact with the vibration membrane carrier ring;

applying a pressure to the vibration membrane blank against the vibration membrane carrier ring to nest and fix the vibration membrane blank on the vibration membrane carrier ring to form the vibration membrane assembly; and

removing the pressure off the vibration membrane blank and separating the vibration membrane assembly from the first thermal molding die.

2. The method according to claim 1, wherein the pressure is applied by a gas around the vibration membrane blank.

3. The method according to claim 2, wherein the step of applying a pressure to the vibration membrane blank against the vibration membrane carrier ring comprises:

forming a gas chamber around the vibration membrane blank laid on the vibration membrane carrier ring; and

applying a gas pressure to the vibration membrane blank against the vibration membrane carrier ring to nest and fix the vibration membrane blank on the vibration membrane carrier ring to form the vibration membrane assembly.

4. The method according to claim 1, wherein the step of applying a pressure to the vibration membrane blank against the vibration membrane carrier ring comprises:

providing a second thermal molding die which is able to form, in combination with the first thermal molding die, a cavity in coincidence with a whole profile of the vibration membrane assembly; and

pressing together the first and the second thermal molding dies to thermally press the vibration membrane blank and the vibration membrane carrier ring in the cavity to nest and fix the vibration membrane blank on the vibration membrane carrier ring to form the vibration membrane assembly.

5. The method according to claim 4, wherein after pressing together the first and the second thermal molding dies, at least one part of the vibration membrane blank is exposed from a gap between the first and the second thermal molding dies.

6. The method according to claim 1, wherein the vibration membrane carrier ring is provided with at least one fixing grooves, and wherein during nesting and fixing the vibration membrane blank on the vibration membrane carrier ring, a part of the vibration membrane blank is thermally pressed into the fixing grooves to fix the vibration membrane blank to the vibration membrane carrier ring.

7. The method according to claim 6, wherein the number of the fixing grooves is four and the fixing grooves are arranged on separate sides of the vibration membrane carrier ring.

8. The method according to claim 6, wherein the fixing grooves have straight or wavy shaped edges.

9. The method according to claim 1, wherein in the step of putting the vibration membrane carrier ring onto the molding side of the first thermal molding die and laying a vibration membrane blank onto the vibration membrane carrier ring to bring the vibration membrane blank in contact with the vibration membrane carrier ring, the vibration membrane blank is wrapped around an outer periphery of the vibration membrane carrier ring.

10. The method according to claim 1, wherein the first thermal molding die is provided with a membrane shaping structure for forming patterns and/or shapes on the vibration membrane blank.

11. The method according to claim 1, wherein the vibration membrane blank is a foil.

12. A vibration membrane assembly for a speaker, the assembly comprising:

a vibration membrane; and

a vibration membrane carrier ring,

wherein the vibration membrane is nested and fixed to the vibration membrane carrier ring.

13. The vibration membrane assembly according to claim 12, wherein the vibration membrane carrier ring is provided with at least one fixing groove, and wherein a part of the vibration membrane is thermally pressed into the at least one fixing groove to fix the vibration membrane to the vibration membrane carrier ring.

14. The vibration membrane assembly according to claim 13, wherein the number of the fixing grooves is four and the fixing grooves are arranged on separate sides of the vibration membrane carrier ring.

15. The vibration membrane assembly according to claim 14, wherein the fixing grooves have straight or wavy shaped edges.

16. The vibration membrane assembly according to claim 12, wherein the vibration membrane is wrapped around an outer periphery of the vibration membrane carrier ring.

17. A speaker comprising:

a vibration membrane carrier ring having at least one fixing groove; and

a vibration membrane nested and fixed to the vibration membrane carrier ring, wherein a part of the vibration membrane is thermally pressed into the at least one fixing groove.