The present disclosure discloses a key unit. The key unit comprises a movable body, an elastic body, and a switch layer comprising a plurality of control switches that are arrayed, wherein along a vertical direction, one end of the elastic body is abutted against a non-central region of the movable body, the other end of the elastic body is selectively pressed against the switch layer under pressing drive of the movable body to adjust an operating state of the control switches of the switch layer. In addition, the present disclosure further provides a keyboard which employs arrays of the key units. With the keyboard unit according to the present disclosure, the quantity of elements is reduced, the structure is simplified, the assembling is facilitated, and the dust-proofing performance is improved.

A switch includes a first contact and a second contact that are placed along an operating shaft and can reciprocate with respect to each other. An end of the second contact opposite to an end thereof on the side of the first contact is housed in a housing space of a housing box. The pressure in the housing space is increased due to an arc generated when the first contact approaches the second contact. The increased in the pressure causes the second contact to move toward the first contact.

A switch includes a first contact and a second contact that are placed along an operating shaft and can reciprocate with respect to each other. An end of the second contact opposite to an end thereof on the side of the first contact is housed in a housing space of a housing box. The pressure in the housing space is increased due to an arc generated when the first contact approaches the second contact. The increased in the pressure causes the second contact to move toward the first contact.

Provided is a pet toy filled with foam latex. The pet toy filled with foam latex has a light emitting device mounted in a latex outer shell of the pet toy. The latex outer shell has an opening. The light emitting device can emit light and the light can pass through the opening to illuminate the outer space of the latex outer shell.

Disclosed are systems and methods associated with a touch-sensitive input device including a plurality of keys, wherein each key of the plurality of keys includes at least one spring. Such a spring may include a substantially planar peak located at a central portion of the spring, a first substantially arcuate leg extending from the peak in a first direction, and a second substantially arcuate leg extending from the peak in a second direction substantially perpendicular to the first direction. In one embodiment, a resistive force provided by the at least one spring decreases after the peak travels a first distance from an initial position of the peak. In such an embodiment, the first distance is less than or equal to approximately of a range of travel of the peak.

Provided is a pet toy filled with foam latex. The pet toy filled with foam latex has a light emitting device mounted in a latex outer shell of the pet toy. The latex outer shell has an opening. The light emitting device can emit light and the light can pass through the opening to illuminate the outer space of the latex outer shell.