Resilient body and keyboard structure

Patent metadata

Field	Value
Publication number	US-10825619-B2
Application number	US-201916573428-A
Country	US
Kind code	B2
Filing date	Sep 17, 2019
Priority date	Mar 12, 2019
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

A resilient body and a keyboard structure are disclosed. The resilient body has a top portion, a bottom portion, a conducting post and an annular wall. The top portion has a first side wall and a first bottom surface. Before the resilient body is pressed, an angle is formed between the first side wall and the first bottom surface, wherein the angle is greater than 90°. The bottom portion has a second bottom surface. The conducting post is disposed under the first bottom surface. When the resilient body is pressed, the fire point of the resilient body is reached before the resilient body reaches the bottom point.

First claim

What is claimed is:

1. A resilient body, used for a keyboard structure, the resilient body comprising:
a top portion, having a first side wall and a first bottom surface, wherein before the resilient body is pressed, an angle is formed between the first side wall and the first bottom surface, wherein the angle θ is greater than 90°;
a bottom portion, having a second bottom surface;
a conducting post, disposed under the first bottom surface; and
an annular wall, two ends of which are connected to the top portion and the bottom portion, respectively;
wherein when the resilient body is pressed, a fire point of the resilient body is reached before the resilient body reaches a bottom point, wherein the conducting post has a bottom surface, a conduction stroke T 1 is formed between the second bottom surface and the bottom surface of the conducting post, the top portion comprises a top surface and a joint surface, a first stroke T 2 is formed between the top surface and the first bottom surface, and a total stroke T 3 is formed between the second bottom surface and the joint surface, wherein T 1 +T 2 <T 3 .

2. The resilient body as claimed in claim 1 , wherein the two ends of the joint surface are respectively connected to the first side wall and the annular wall, and an end of the annular wall not connected to the joint surface is connected to the bottom portion.

3. The resilient body as claimed in claim 1 , wherein the conducting post is conical.

4. The resilient body as claimed in claim 1 , wherein the top portion comprises at least one first exhaust hole disposed on the top surface and the bottom portion comprises at least one second exhaust hole disposed on the second bottom surface.

5. A keyboard structure, comprising:
a keycap;
a bottom plate; and
the resilient body as claimed in claim 1 , wherein the resilient body is disposed between the keycap and the bottom plate.

6. The keyboard structure as claimed in claim 5 , wherein the conduction stroke T 1 is less than 0.6 mm.

7. The keyboard structure as claimed in claim 5 , wherein the conduction stroke T 1 is less than 1.5 mm.

8. The keyboard structure as claimed in claim 5 , wherein the first stroke T 2 ranges from 0.5 mm to 1 mm, and the total stroke T 3 ranges from 1.5 mm to 3 mm.

9. The keyboard structure as claimed in claim 5 , wherein the first stroke T 2 ranges from 0.5 mm to 1 mm, and the total stroke T 3 ranges from 1 mm to 3 mm.

10. The keyboard structure as claimed in claim 5 , wherein the angle θ ranges from 100° to 170°.

11. The keyboard structure as claimed in claim 5 , wherein a thickness of the first side wall ranges from 0.2 mm to 0.8 mm.

12. The keyboard structure as claimed in claim 5 , wherein a thickness of the first side wall ranges from 0.3 mm to 0.5 mm.

13. The keyboard structure as claimed in claim 5 , wherein the conducting post is conical.

14. The keyboard structure as claimed in claim 5 , wherein a diameter of the conducting post ranges from 0.5 mm to 2.5 mm.

15. The keyboard structure as claimed in claim 5 , wherein the top portion comprises at least one first exhaust hole disposed on the top surface.

16. The keyboard structure as claimed in claim 5 , wherein the bottom portion comprises at least one second exhaust hole disposed on the second bottom surface.

17. A resilient body, used for a keyboard structure comprising a keycap and a bottom plate, the bottom plate having a membrane switch, the resilient body being disposed between the keycap and the bottom plate, the resilient body comprising:
a top portion, having a first side wall and a first bottom surface, wherein before the resilient body is pressed, an angle is formed between the first side wall and the first bottom surface, where the angle is greater than 90°;
a bottom portion, having a second bottom surface;
a conducting post, disposed under the first bottom surface; and
an annular wall, two ends of which are connected to the top portion and the bottom portion, respectively;
wherein when the resilient body is pressed, the conducting post triggers the membrane switch before the first bottom surface and the keycap contact each other, and
wherein the conducting post has a bottom surface, a conduction stroke T 1 is formed between the second bottom surface and the bottom surface of the conducting post, the top portion comprises a top surface and a joint surface, a first stroke T 2 is formed between the top surface and the first bottom surface, and a total stroke T 3 is formed between the second bottom surface and the joint surface, wherein T 1 +T 2 <T 3 .

Assignees

• Chicony Electronics Co Ltd

Inventors

• Wu Fei-Wu
• Chen Tsung-Min
• Yang Liang-Yuan

Classifications

• H01H13/86

  characterised by the casing, e.g. sealed casings or casings reducible in size · CPC title

• H01H13/85 Primary

  characterised by tactile feedback features · CPC title

• H01H13/705 Primary

  characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys · CPC title

• H01H2227/032

  Operating force · CPC title

• H01H2221/05

  Force concentrator; Actuating dimple · CPC title