초록 ▼

A removable core cylinder lock includes a cylinder lock casing and a removable cylinder lock core inserted into the casing. The lock core has an upper massive part with a row of holes for accommodating locking tumblers, and a lower part defining a cylindrical bore in which a cylindrical, rotatable k

A removable core cylinder lock includes a cylinder lock casing and a removable cylinder lock core inserted into the casing. The lock core has an upper massive part with a row of holes for accommodating locking tumblers, and a lower part defining a cylindrical bore in which a cylindrical, rotatable key plug is located. The lower part defining the cylinder bore of the cylinder lock core is partially cut away so as to form an axially elongated chamber accommodating a transversely movable retainer member and leaving a continuous lower wall portion. The retainer member has an axial length, which corresponds to at least half of the axial length of the row of holes in the upper massive part, and a limited circumferential extension, which is substantially supplementary to the continuous lower wall portion so as to define the cylindrical bore.

대표청구항 ▼

[ I claim:] [1.] A removable core cylinder lock, comprising:a cylinder lock casing having an axially extending cavity;a removable cylinder lock core which is axially insertable into said cavity, said lock core having an upper massive part with a row of holes for accommodating locking tumblers and a

[ I claim:] [1.] A removable core cylinder lock, comprising:a cylinder lock casing having an axially extending cavity;a removable cylinder lock core which is axially insertable into said cavity, said lock core having an upper massive part with a row of holes for accommodating locking tumblers and a lower part defining a cylindrical bore extending axially therethrough;a cylindrical, rotatable key plug located in said cylindrical bore and having a longitudinal key slot for receiving a key cooperating with said locking tumblers; anda retainer member being transversely movable between a first position, in which the retainer member positively locks said lock core in an axially inserted position, and a second position, in which said lock core may be retracted, said retainer member having a transversely extending locking lug engaging with said casing when said retainer member is in said first position; whereinsaid lower part defining the cylindrical bore of the cylinder lock core is partially cut away so as to form an axially extending chamber accommodating said transversely movable retainer member and leaving a continuous lower wall portion, which partially encloses the rotatable key plug and extends axially along substantially the whole length of said cylindrical bore,said retainer member has a limited circumferential extension, which is substantially supplementary to said continuous lower wall portion so as to define said cylindrical bore,said accommodating chamber is upwardly extended into said upper massive part of the cylinder lock core,said retainer member comprises a base portion, which is formed substantially as a part-cylindrical shell with external and internal cylindrical surfaces, and a radially outwardly projecting portion constituting said locking lug,said accommodating chamber is upwardly defined by a concave cylindrical surface,the retainer member has a corresponding upper convex cylindrical surface, said retainer member being rotatable between said first and second positions with a sliding contact between said concave and convex surfaces,the circumferential dimension of said base portion is less than the circumferential dimension of said accommodating chamber, andsaid base portion and said lower wall portion have longitudinal abutment surface portions defining said first and second positions of the retainer member.