Abstract:
An outer assembling mechanism of a backpack for carrying a detachable skate in accordance with the present invention mainly comprises a base plate and a plurality of assembling seats fixed thereto. The assembling seats are adapted to releasably engage with the detachable skate in walking or to disengage with the detachable skate for skating.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention is related to an outer assembling mechanism of a backpack for carrying a detachable skate and more particularly to the backpack provides with the outer assembling mechanism which is adapted to conveniently assemble or disassemble the detachable ice/roller skate.  
           [0003]    2. Description of the Related Art  
           [0004]    The technology trend in skates manufacturing has been toward convertible shoe with a detachable roller skate. Attaching the detachable roller skate to the convertible shoe capable of converting from a shoe into a roller skate at will is known in the art. Also, detaching the detachable roller skate from the convertible shoe capable of converting a roller skate into a shoe for walking is known in the art. Thus, a skater can avoid carrying additional footwear for walking or other physical activity when the skates are not in use or are not allowed.  
           [0005]    U.S. Pat. No. 2,998,260, issued on Aug. 29, 1961 to Meyer, discloses a skate shoe and interchangeable roller and ice skates therefor. The skate shoe includes the combination of mounting plate secured beneath the sole of the shoe. This mounting plate is provided with a plurality of headed studs and a lug. A skate has a top plate matching the mounting plate having a plurality of keyhole slots and a locking slot. The keyhole slots are capable of receiving the headed studs when the shoe is placed upon the skate for retaining the shoe assembled with the skate. The lug is capable of inserting into the locking slot so that a screw mount lug and a locking screw thereof is adjusted to abut against the lug to effectively lock the shoe in place upon the top plate of the skate. However, U.S. Pat. No. 2,998,260 fails to provide with an assembling mechanism for the skate in storage after detached from the skate shoe.  
           [0006]    U.S. Pat. No. 6,120,038, issued on Sep. 19, 2000 to Dong et al., discloses a skate having a shoe portion detachably secured to a plurality of longitudinally aligned skate wheels for traversing a surface. The shoe portion having a sole defining a toe end and a heel end. The skate further includes a frame having an upper surface and a lower surface attached to the wheels. The skate also includes a heel latch member rotatably attached to the frame for receiving and coupling to a heel binding attachment surface located in the heel end of the sole to the frame. A lever arm is attached to the heel latch member to selectively release or attach the shoe portion from the heel latch member. The heel latch member is rotatable about a vertical axis extending normal to the elongate direction of the frame. The heel latch member is rotatable between a locked position, wherein the heel attachment member is nested therein, and an open position, wherein the frame is detachable from the shoe portion to convert the skate into a convention shoe. However, U.S. Pat. No. 6,120,038, like U.S. Pat. No. 2,998,260, fails to provide with an assembling mechanism for the skate in storage after detached from the skate shoe.  
           [0007]    Referring to FIG. 1, U.S. patent application Ser. No. 10/142,782 discloses a sport shoe  1  and a detachable skate  40  attached thereto by a locking device  20  and a pivotal device  30 . However, a skater must store the skate  40  in a backpack after detached from the sport shoe  1 . Accordingly, a need exists for improved assembly of the skate  40  on a backpack.  
           [0008]    The present invention intends to provide a backpack with an outer assembling mechanism for carrying a detachable skate in such a way to mitigate and overcome the above problem.  
         SUMMARY OF THE INVENTION  
         [0009]    The primary objective of this invention is to provide an outer assembling mechanism of a backpack for carrying a detachable skate, which allows conveniently assembling the detachable skate in walking or disassembling the detachable skate for skating.  
           [0010]    The secondary objective of this invention is to provide the outer assembling mechanism of the backpack for carrying the detachable skate, particularly avoiding inner assembled relationship of the backpack with the skate and thus increasing useful inner space of the backpack.  
           [0011]    The outer assembling mechanism of the backpack for carrying the detachable skate in accordance with the present invention mainly comprises a base plate and a plurality of assembling seats fixed thereto. The assembling seats are adapted to releasably engage with the detachable skate in walking or to disengage with the detachable skate for skating.  
           [0012]    Another aspect of the present invention is the base plate arranged at a bottom of the backpack.  
           [0013]    Another aspect of the present invention is the base plate providing with a plurality of cavities adapted to receive the assembling seats.  
           [0014]    Another aspect of the present invention is the assembling seats comprised of a locking seat and a pivotal seat adapted to correspondingly engage with a locking device and a pivotal device of the detachable skate.  
           [0015]    Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description and the accompanying drawings. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0016]    The present invention will now be described in detail with reference to the accompanying drawings herein:  
         [0017]    [0017]FIG. 1 is a lateral view of the detachable skate of sports shoe in accordance with U.S. patent application Ser. No. 10/142,782;  
         [0018]    [0018]FIG. 2 is an exploded perspective view of an outer assembling mechanism of a backpack for carrying a detachable skate in accordance with a first embodiment of the present invention;  
         [0019]    [0019]FIG. 3 is a partial cross-sectional view of the outer assembling mechanism of the backpack in accordance with the first embodiment of the present invention, initially assembling the detachable skate;  
         [0020]    [0020]FIG. 4 is a partial cross-sectional view of the outer assembling mechanism of the backpack in accordance with the first embodiment of the present invention combined with the detachable skate; and  
         [0021]    [0021]FIG. 5 is a partial cross-sectional view of the outer assembling mechanism of the backpack in accordance with the first embodiment of the present invention, disassembling the detachable skate; and  
         [0022]    [0022]FIG. 6 is a partial cross-sectional view of the outer assembling mechanism of the backpack in accordance with a second embodiment of the present invention combined with the detachable skate. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0023]    Referring now to the drawings, there are two embodiments of the present invention shown therein, which include generally a primary backpack member and a secondary skate member.  
         [0024]    Referring to FIGS. 2 through 5, reference numerals of a first embodiment of the present invention have applied the identical numerals of conventional skate, as shown in FIG. 1.  
         [0025]    Referring initially to FIGS. 2 and 3, a backpack  100  in accordance with the first embodiment of the present invention generally includes a base plate designated as numeral  10 , a locking device designated as numeral  20 , a pivotal device designated as numeral  30 , and a detachable skate  40 . Much of the detailed construction of the backpack  100  is omitted.  
         [0026]    Referring again to FIGS. 2 and 3, the base plate  10  is arranged at a bottom of the backpack  100 . The base plate  10  comprises two first cavities  11  and two second cavities  12  at its underside each having an appropriate opening so as to contain the two locking device  20  and the two pivotal device  30  respectively. Preferably, pair of the detachable skates  40  are arranged longitudinal and symmetrical with respect to the base plate  10 , as best shown in FIG. 2. In addition, the detachable skate  40  is preferable an in-line roller skate and constructs a locking member of the locking device  20  and a pivotal member of the pivotal device  30  on an uppermost portion of a main frame  41 . The main frame  41  essentially comprises a toe end and heel end.  
         [0027]    Construction of the locking device  20  shall be described in detail, referring again to FIGS. 2 and 3. The locking device  20  includes a locking seat  21 , a rotatable hook  23 , an elastic member  24  and a lever  25 . The locking seat  21  is adapted to form an assembling seat and securely fixed to the base plate  10  in the first cavity  11 . The locking seat  21  comprises an engaging wall  22  formed with a protrusion. The rotatable hook  23  is projected upward from the heel end of the skate  40  being adapted to releasably engage with the engaging wall  22  of the locking seat  21  in the first cavity  11 . The elastic member  24  is provided to bias the rotatable hook  23  and the lever  25  is used to rotate the rotatable hook  23  for disassembling by means of overcoming bias force of the elastic member  24 . In addition, the locking seat  21  further comprises a pair of guiding holes  26  and elastic members  27  received therein. The heel end of the skate  40  further comprises a pair of guiding studs  28  being adapted to insert into the guiding holes  26  and thus biased by the elastic members  27 .  
         [0028]    The pivotal device  30  in accordance with the present invention allows pivotal movement of the detachable skate  40  with respect to the base plate  10  during assembling or disassembling operation. Construction of the pivotal device  30  shall be described in detail, referring again to FIGS. 2 and 3. The pivotal device  30  includes a pivotal seat  31  and a pivotal hook  32 . The pivotal seat  31  is adapted to form an assembling seat and securely fixed to the base plate  10  in the second cavity  12 . The pivotal hook  32  is projected upward from the toe end of the detachable skate  40  being adapted to releasably engage with the pivotal seat  31  in the second cavity  12  while initially assembling.  
         [0029]    The detachable skate  40  is detached from the sport shoe  1 , as shown in FIG. 1, on purpose of walking. Assembling operation of the detachable skate  40  with the base plate  10  shall be described in three steps, referring now to FIGS. 3 and 4. In first step, the pivotal hook  32  is inserted into the pivotal seat  31 , as best shown in FIG. 3. In second step, the detachable skate  40  is rotated a predetermined angle with respect to the pivotal device  30  and the guiding studs  28  is initially inserted into the guiding holes  26 . In third step, the guiding stud  28  is completely inserted into the guiding hole  26  and then the rotatable hook  23  is completely engaged with the engaging wall  22 , as best shown in FIG. 4.  
         [0030]    Locked situation of the locking device shall now be described with reference back to FIG. 3. In locked position, the pivotal hook  32  is engaged with the pivotal seat  31  of the base plate  10  while the rotatable hook  23  is engaged with the locking seat  21 . The lever  25  is capable of actuating to unlock the locking device  20  for detaching the detachable skate  40  from the base plate  10  so as to prepare the detachable skate  40  combing with the sport shoe  1 , as best shown in FIG. 1.  
         [0031]    Releasing operation of the locking device  20  shall now be described with reference now to FIG. 5. In releasing operation, the lever  25  is rotated a predetermined angle in clockwise direction to thereby disengage the rotatable hook  23  with the engaging wall  22 . As the rotatable hook  23  rotates a predetermined angular distance round its axis, it is disengaged with the engaging wall  22 . In released situation, the heel end of the detachable skate  40  is automatically released from the base plate  10  by means of bias force of the elastic member  27 . The rotatable hook  23  is returned to the original position by means of bias force of the elastic member  25  while releasing the lever  25 .  
         [0032]    Referring to FIG. 6, reference numerals of a second embodiment of the present invention have applied the identical numerals of the first embodiment. The backpack  100 , the locking device  20 , the pivotal device  30 , and the detachable skate  40  of the second embodiment has the similar configuration and same function as the first embodiment and the detailed descriptions are omitted.  
         [0033]    Referring again to FIG. 6, the base plate  10  is arranged at a bottom of the backpack  100 . The locking seat  21  of the locking device  20  and the pivotal seat  31  of the pivotal device  30  are adapted to form assembling seats and securely fixed to the base plate  10  by screws.  
         [0034]    Although the invention has been described in detail with reference to its presently preferred embodiment, it will be understood by one of ordinary skill in the art that various modifications can be made without departing from the spirit and the scope of the invention, as set forth in the appended claims.