The present invention discloses a multifunctional carrying device comprising a female connecting member and a male connecting member which the female connecting member and the male connecting member are connected in a snap-in manner; either the male connecting member or the female connecting member being fixed on a bag. The multifunctional carrying device of this invention can be used on both horizontal direction and vertical direction, not just simply adding a bag, but it could change from one application to another application, so as to increase the utility. This invention could be dismantled and saves space, basically it will not increase the weight of the bag and convenient in using.

Interchangeable luggage perimeters are disclosed. Example interchangeable luggage perimeters may comprise an interchangeable base element adapted to securely and releasably couple with exchangeable components such as exchangeable foot pads, exchangeable wheels, or exchangeable handles. The interchangeable base element may be interchangeable by having a configuration supporting repositioning of the interchangeable base element at multiple different edges of a luggage piece, e.g., any of at least two or four edges of a luggage piece.

A suitcase includes a kit to convert the suitcase to a luggage cart. A typical rolling suitcase additionally includes at least three sockets provided in spaced relation in the major bottom wall of the suitcase base and open to an outside of the suitcase, and at least three stem casters, each stem caster having a wheel rotatable in a housing and a stem attached to the housing, the stem being configured to be removably secured in one of the at least three sockets. When the at least three stem casters are secured in the at least three sockets and the bottom wall of the suitcase base is arranged facing the ground with the wheels of the at least three stem casters touching the ground, the suitcase is useable as a luggage cart by piling at least one further suitcase over the suitcase lid.

A releasable wheel assembly includes a bracket having a plurality of bosses, each boss including a hole that receives an axle. A pair of wheels are mounted on the axle and a pair of locking caps fit over respective ends of the axle, the locking caps each including a clip for engaging the axle at a circumferential groove to prevent movement of the locking cap along the axle. The wheel assembly can be mounted to a carry bag or other storage unit by mounting the bracket to the storage unit, where the wheels and axle can be easily removed from the bracket.

A backpack structure is adapted to provide a storage space, and integrated with a tent structure. The backpack body has a right connection portion and a left connection portion to connect the left sidewall and the right sidewall, wherein the connections are pins, buttons, strips or velcros. The tent structure is stored in the compartment of the backpack body, or the left sidewall and the right sidewall. The tent structure includes a tent base, a left tent portion and a right tent portion. The compartment may has pads, made of cushioning materials, such as foam, to replace the camping mat, for rest. Therefore, the backpack structure of the invention is light for the users of outdoor activities. Moreover, the backpack structure may combine with a trolley structure for drawing easily, or the backpack structure may be designed as a luggage suitcase.

A castor for a suitcase includes a fixed seat, a wheel support, a hollow axle, two roller modules, and two caps. The fixed seat is mounted on a suitcase. The wheel support is mounted on the fixed seat and provided with two ears each having a transverse axle hole provided with a plurality of locking grooves. The hollow axle extends through the transverse axle hole of each of the two ears. The roller modules are mounted on the hollow axle and arranged between the ears. Each of the caps is provided with a plurality of locking hooks locked into the locking grooves of the transverse axle hole of one of the ears. Thus, when one of the roller modules cannot be rotated, the other one of the roller modules can be rotated freely.

The invention serves to cut the cost of traveling with additional guitars on commercial aircraft in half by guitar style-specific designed soft outer carrying cases which allow the traveler to combine two hard shell guitar traveling cases inside of one single outside soft cover case. Typically, this qualifies the two guitars as One piece of luggage, if under 50 lbs., on most domestic and international airlines and therefore the traveler is only charged a fee for one additional piece of luggage.

There are no solutions which will combine two acoustic guitars into a one piece baggage item with regards to airline baggage charges. Nor is there any competition which allows the combination of two separate electric guitar cases to be joined together resulting in fewer airline charges for additional luggage.

This invention also makes it easier to maneuver two guitars around at once.

There is configuration zipper 440 which allows the traveler to only expand the case to a single guitar case size for the occasions when only one guitar is being transported.

The present invention provides a wheel assembly for a luggage bag. The wheel assembly comprises a mounting plate, a fork, at least one wheel and at least one magnet. The mounting plate is adapted to be configured on a peripheral portion of the luggage bag. The fork extends from the mounting plate and at least one wheel is connected to the fork. The magnet is adapted to be arranged on an inner portion of the luggage bag opposite to the corresponding mounting plate. When the luggage bag is brought into proximity with the mounting plate, the magnet inside the luggage bag is attracted to the mounting plate and securely connects with the mounting plate, thereby fastening the wheel assembly to the luggage bag.

A chordophone case includes a detachable wheel assembly that is configured to be attached to and detached from front and rear anchors on the case's front and rear faces. A wheel is mounted on a fork mount having a base and sidewalls that project therefrom to form an acute angle relative to the base. The detachable wheel assembly's frontward and rearward strap is anchored to the base and configured for attachment to the case.

A luggage case includes expansible sleeping compartment apparatus. The expansible sleeping compartment apparatus comprises at least two housing members which define a volume when closed together for receiving therein or thereon an expansible sleeping compartment in an unexpanded state. The expansible sleeping compartment apparatus is attached to at least one of said housing members. In an expanded state the surfaces of expansible sleeping compartment defines an enclosure with an opening for receiving a person therein.