Piezoelectric sounding body
AssigneeTDK Corporation
InventorsAkira Satoh, Kaoru Kijima
Life of this patent
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Abstract
A piezoelectric sounding body includes: a piezoelectric vibrating plate; a case housing the piezoelectric vibrating plate; a first conductive terminal electrically connected to one electrode in the piezoelectric vibrating plate; and a second conductive terminal electrically connected to the other electrode in the piezoelectric vibrating plate. The case includes: a lower case where the first conductive terminal and the second conductive terminal are fixed; and an upper case configured to be fixed in a caulking manner to the lower case and to sandwich the piezoelectric vibrating plate between the upper case and the lower case.
Claims7
A piezoelectric sounding body, comprising:
- a piezoelectric vibrating plate;
- a case housing the piezoelectric vibrating plate;
- a first conductive terminal electrically connected to one electrode in the piezoelectric vibrating plate;
- and
- a second conductive terminal electrically connected to the other electrode in the piezoelectric vibrating plate,
- wherein the case includes:
- a lower case where the first conductive terminal and the second conductive terminal are fixed;
- and
- an upper case configured to be fixed in a caulking manner to the lower case and to sandwich the piezoelectric vibrating plate between the upper case and the lower case, and
- the upper case includes:
- a contact projection configured to contact the piezoelectric vibrating plate and to press it toward the lower case;
- and
- an upper case lower surface configured to face the piezoelectric vibrating plate or the lower case with respect to a pressing direction where the piezoelectric vibrating plate is pressed toward the lower case and be arranged with space to the piezoelectric vibrating plate or the lower case wherein
- the upper case lower surface includes:
- a first upper case lower surface configured to have part of an opening edge of a lower opening;
- and
- a second upper case lower surface configured to have another part of the opening edge, to be positioned farther from the contact projection than the first upper case lower surface, and to have the space being narrower than that of the first upper case lower surface.
A piezoelectric sounding body, comprising:
- a piezoelectric vibrating plate;
- a case housing the piezoelectric vibrating plate;
- a first conductive terminal electrically connected to one electrode in the piezoelectric vibrating plate;
- and
- a second conductive terminal electrically connected to the other electrode in the piezoelectric vibrating plate,
- wherein the case includes:
- a lower case where the first conductive terminal and the second conductive terminal are fixed;
- and
- an upper case configured to be fixed in a caulking manner to the lower case and to sandwich the piezoelectric vibrating plate between the upper case and the lower case, and
- the upper case includes:
- a contact projection configured to contact the piezoelectric vibrating plate and to press it toward the lower case;
- and
- an upper case lower surface configured to face the piezoelectric vibrating plate or the lower case with respect to a pressing direction where the piezoelectric vibrating plate is pressed toward the lower case and be arranged with space to the piezoelectric vibrating plate or the lower case wherein
- a plurality of Insertion holes where a caulking projection for fixing the upper case in a caulking manner to the lower case is inserted is formed in the upper case and has a lower opening positioned on the upper case lower surface,
- the caulking projection has a base connecting to the lower case and an upper edge being larger than a diameter of the insertion hole at upper side to the insertion hole.
Dependencies are inferred from the claim text.