Locking structure, housing assembly, and electronic device

A housing assembly, comprising:

• a housing provided with a first mounting portion;
• a middle frame provided with a second mounting portion;
• and
• a key connected to the middle frame, wherein the key is configured to connect the middle frame and an external structure comprising a locking portion, and the key comprises:
• a pressing member, wherein the pressing member is movably provided at the first mounting portion, and is configured to move relative to the first mounting portion in a first direction under an external force;
• and
• a clamped member, wherein the clamped member is movably provided at the second mounting portion, and positioned at the middle frame through the second mounting portion, and the clamped member is configured to be engaged with the locking portion of the external structure;
• at least partial structure of the clamped member is arranged opposite to the pressing member;
• wherein in a process of mounting the external structure to the middle frame, the external structure is adapted to move in a second direction to push the clamped member to move relative to the middle frame in the first direction, and the clamped member is capable of being restored so as to be engaged with the locking portion of the external structure;
• in a process of detaching the external structure from the middle frame, the pressing member is capable of being pressed to drive the clamped member to move in the first direction so as to be disengaged from the external structure, wherein the first direction is different from the second direction.

An electronic device configured to be installed with a strap, the electronic device comprising:

• a casing, provided with a first mounting portion and a second mounting portion communicated with each other;
• a key comprising a pressing member and an elastic connection member, wherein the elastic connection member is connected to the pressing member, and the pressing member is provided at the first mounting portion;
• and
• a clamped member provided at the second mounting portion, wherein assembling and positioning of the clamped member to the casing are performed separately from assembling and positioning of the pressing member to the casing;
• wherein the clamped member is adapted to mate with a locking portion of the strap, to make the strap confined at the casing;
• when the strap is confined at the casing, the elastic connection member abuts against the casing, to make the pressing member confined at the casing;
• the pressing member is adapted to, when being pressed, move relative to the casing and drive the clamped member to move, to enable the clamped member to be disengaged from the strap, and enable the strap to be detached from the casing.