Interdental brush and method of producing the same
AssigneeKabushiki Kaisha Ki Inexhaustible Supply
InventorTokuji Okamura
Life of this patent
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Abstract
An interdental brush comprises bristles (11), a wire (12) with which the bristles (11) are twisted, and a handle (13) to which the wire is attached. The handle (13) is composed of a main body (21) and a sub-body (22). The main body (21) is provided with a longitudinal hole (41) into which a base part of the wire (12) is inserted, and a lateral hole (43) intersecting the longitudinal hole (41). A coming-off preventing bent portion (51) is formed at the base part of the wire (12) so as to be exposed to the lateral hole (43). The sub-body (22) is provided with an engagement portion (52) filling the lateral hole (43) so as to surround a periphery of the bent portion (51).
Claims12
An interdental brush comprising:
- bristles 11;
- a wire 12 with which the bristles 11 are twisted;
- and
- a handle 13 attached to the wire, wherein
- the handle 13 is composed of a main body 21 and a sub-body 22,
- the main body 21 is provided with a longitudinal hole 41 into which a base part of the wire 12 is inserted, and a lateral hole 43 intersecting the longitudinal hole 41,
- the base part of the wire 12 is provided with a coming-off preventing bent portion 51 formed so as to be exposed to the lateral hole 43, and
- the sub-body 22 is provided with an engagement portion 52 filling the lateral hole 43 so as to surround a periphery of the bent portion 51.
A method of producing an interdental brush comprising the steps of:
- forming, by primary resin molding, a main body 21 of a handle 13 having a longitudinal hole 41 and a lateral hole 43 insecting the longitudinal hole 41;
- inserting a base part of a wire 12, with which bristles 11 are twisted, into the longitudinal hole 41 so as to be exposed to the lateral hole 43;
- forming a coming-off preventing bent portion 51 at the base part of the wire 12 via the lateral hole 43;
- and
- forming, by secondary resin molding, a sub-body 22 of the handle 13 such that a part thereof fills the lateral hole 43 so as to surround a periphery of the bent portion 51.
Dependencies are inferred from the claim text.