US 12,069,420 B2
Open earphones
Lei Zhang, Shenzhen (CN); Liwei Wang, Shenzhen (CN); and Zhen Wang, Shenzhen (CN)
Assigned to SHENZHEN SHOKZ CO., LTD., Shenzhen (CN)
Filed by SHENZHEN SHOKZ CO., LTD., Guangdong (CN)
Filed on Nov. 23, 2023, as Appl. No. 18/518,477.
Application 18/518,477 is a continuation of application No. PCT/CN2022/134389, filed on Nov. 25, 2022.
Claims priority of application No. 202211336918.4 (CN), filed on Oct. 28, 2022.
Prior Publication US 2024/0147105 A1, May 2, 2024
Int. Cl. H04R 1/08 (2006.01); H04R 1/10 (2006.01)
CPC H04R 1/08 (2013.01) [H04R 1/1091 (2013.01); H04R 1/105 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An open earphone comprising:
an acoustic driver for generating two sounds with opposite phases;
a housing for accommodating the acoustic driver, the housing being provided with two sound holes for outputting each of the two sounds with opposite phases; and
a suspension structure for fixing the housing in a position near an ear of a user without blocking an ear canal of the user, wherein
the housing includes a body and a baffle,
the body defines a first cavity accommodating the acoustic driver,
the baffle is connected to the body and extended in a direction of the ear canal of the user,
the baffle and an auricle of the user define a second cavity, and
the two sound holes are respectively located inside and outside of the second cavity, wherein
a ratio of a distance between a boundry of the baffle near the ear canal of the user and a sound hole located outside of the second cavity to a distance between the two sound holes is less than 1.78.