Abstract:
It is an object of the present invention to improve the manipulation of attaching and detaching the memory cartridge and the portability of the memory cartridge, in which a data recording device is equipped replaceably with a memory cartridge accommodating a memory card as a data recording medium. The data recording device A replaceably equipped with a memory cartridge B accommodating a memory card DM as a data recording medium, wherein the memory cartridge B comprises a handle  23  capable of being popped out.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention relates to a data recording device that accommodates memory cards that are data recording media to thus constitute a memory cartridge and is loaded with and integrated with the memory cartridge, the data recording device for recording image information generated as digital signals in the memory cards of the memory cartridge.  
           [0003]    2. Description of the Related Art  
           [0004]    Data recording devices using magnetic tapes as data recording media have been developed as flight recorders (airborne video tape recorders (AVTR)) mounted in airplanes. However, since higher reliability is requested, memory cards (PCMCIA cards) that adopt semiconductor memory elements are being used. In order to solve problems caused by the generation of heat inside the sealed case of the data recording device, to and from which a memory cartridge as a single body composed of a plurality of accommodated memory cards can be attached and detached, the applicant of the present application tries to take measures (for example, the Patent Document 1).  
           [0005]    [Patent Document 1] 
           [0006]    U.S. Pat. No. 6,529,374 B2  
         SUMMARY OF THE INVENTION  
         [0007]    The patent document 1 discloses a widely used improved technology capable of solving problems caused by the generation of heat in an electronic apparatus whose case is sealed. The technology is essential to the data recording device according to the present invention. Although basic problems such as the generation of heat were solved, problems in convenience of use or safety measures for protecting data are to be solved.  
           [0008]    That is, for example, in the case of the structure disclosed in the conventional patent document 1, when the memory cartridge is mounted in a main body, since the entire memory cartridge is connected to a connector while being buried in the main body, it is difficult to take the memory cartridge out. Since the memory cartridge is not forcibly supported in a state where the data recording device is driven, the memory cartridge may be disconnected from the connector or the connection state may deteriorate. Since the data recording device according to the present invention has the function of a computer, when the memory cartridge is taken out from the main body, in order to protect the data recorded in the memory cards of the memory cartridge, it is necessary to take the safety measures of taking the memory cartridge after shutting down the computer. Therefore, in order to solve the problems of the data recording device to and from which the memory cartridge can be attached and detached, it is an object of the present invention to improve the manipulation property of attaching and detaching the memory cartridge and the portability of the memory cartridge  
           [0009]    To achieve this object, in the invention according to claim  1 , there is provided a memory cartridge of a data recording device replaceably equipped with the memory cartridge accommodating a memory card as a data recording medium, wherein the memory cartridge comprises a handle capable of being popped out. According to the aspect of claim  2 , there is provided a memory cartridge of a data recording device replaceably equipped with the memory cartridge accommodating a memory card as a data recording medium, wherein the memory cartridge comprises a handle capable of being popped out, and wherein, in a state where the memory cartridge is taken out from the data recording device to thus be a single body, the handle can be accommodated in and fixed to the main body of the memory cartridge. According to the aspect of claim  3 , there is provided a memory cartridge of a data recording device replaceably equipped with the memory cartridge accommodating a memory card as a data recording medium, wherein the memory cartridge comprises a handle capable of being popped out, and an eject/lock mechanism capable of controlling the handle from the main body of data recording device. According to the aspect of claim  4 , there is provided a data recording device replaceably equipped with a memory cartridge accommodating a memory card as a data recording medium, wherein the memory cartridge comprises a handle capable of being popped out and an eject/lock mechanism capable of controlling the handle from the main body of data recording device, and wherein the handle of the memory cartridge is popped out by releasing the locking state of the eject/lock mechanism by synchronizing with shut-down completion of the data recording device. According to the aspect of claim  5 , there is provided a data recoding device replaceably equipped with a memory cartridge accommodating a memory card as a data recording medium, wherein the memory cartridge comprises a handle capable of being popped out, and wherein an open-close door is provided in a memory cartridge accommodating portion for the data recording device, and a pressing member serving for accommodating the handle of the memory cartridge is provided in the open-close door. According to the aspect of claim  6 , there is provided a data recoding device as set forth in the aspect of claim  5 , wherein the pressing member is equipped with a rotatable pressing roller, and when the open-close door is closed, the memory cartridge is pressed by spring pressure of pressing roller in the loaded direction. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0010]    [0010]FIG. 1 is a perspective view illustrating the external appearance of a data recording device according to the present invention;  
         [0011]    [0011]FIG. 2 is a sectional view illustrating the internal structure of FIG. 1;  
         [0012]    [0012]FIG. 3 is a perspective view illustrating the external appearance of a memory cartridge according to the present invention;  
         [0013]    [0013]FIG. 4 is a perspective view illustrating the structure of an open-close door;  
         [0014]    [0014]FIG. 5 is a view illustrating a state in which a memory card is fixed;  
         [0015]    [0015]FIG. 6 is a perspective view illustrating the structure of a memory cartridge holder;  
         [0016]    [0016]FIG. 7 is a perspective view illustrating a mechanism for latching the open-close door;  
         [0017]    [0017]FIG. 8 is a view illustrating the internal structure of the memory cartridge;  
         [0018]    [0018]FIG. 9 is a view illustrating the operation of the handle of the memory cartridge;  
         [0019]    [0019]FIG. 10 is a view illustrating a state in which the handle operates;  
         [0020]    [0020]FIG. 11 is a perspective view illustrating an eject/lock mechanism;  
         [0021]    [0021]FIG. 12 is a perspective view illustrating a state in which the memory cartridge is loaded;  
         [0022]    [0022]FIG. 13 is a perspective view illustrating a state in which the open-close door operates;  
         [0023]    [0023]FIG. 14 is a perspective view illustrating a state in which the handle is locked;  
         [0024]    [0024]FIG. 15 is a perspective view illustrating the external appearance of a data recording device according to another example of the present invention;  
         [0025]    [0025]FIG. 16 is a perspective view illustrating the external appearance in which a state where the data recording device of FIG. 15 is used;  
         [0026]    [0026]FIG. 17 is a perspective view of the memory cartridge of the data recording device of FIG. 15;  
         [0027]    [0027]FIG. 18 is a perspective view of the structure of the memory cartridge of FIG. 17;  
         [0028]    [0028]FIG. 19 is a sectional view illustrating an example of the structure of popping out of a handle;  
         [0029]    [0029]FIG. 20 is a sectional view illustrating a state in which the handle is popped out;  
         [0030]    [0030]FIG. 21 is a perspective view illustrating the structure of a memory cartridge holder;  
         [0031]    [0031]FIG. 22 is an exploded perspective view of a lock/unlock mechanism;  
         [0032]    [0032]FIG. 23 is a sectional view illustrating a state in which the handle is locked;  
         [0033]    [0033]FIG. 24 is a sectional view illustrating a state in which the handle is unlocked; and  
         [0034]    [0034]FIG. 25 is a perspective view illustrating the structure of a rear surface of the open-close door. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0035]    Preferred embodiments of the present invention will now be described with reference to the drawings. Also, since the present invention is completed by assembling a plurality of components, in order to facilitate appreciation thereof, the entire structure will be schematically described.  
         [0036]    [0036]FIG. 1 is a perspective view illustrating the completion state of a data recording device A according to the present invention. The present invention is mainly composed of the data recording device A and a memory cartridge B illustrated in FIG. 3, which can be attached to and detached from the data recording device A. The main body  1  of the data recording device A is integrally molded by aluminum die casting so that only the parts in which a open-close door  2  and a rear surface panel  3  are provided on the upper portion of the front surface are opened as illustrated in FIG. 2. As noted from FIG. 2, when the open-close door  2  and the rear surface panel  3  are mounted, the inside of the case of the data recording device A is sealed so that the generated heat of electronic parts is accumulated. Therefore, in order to radiate the generated heat inside the case of the data recording device A, radiation fins  1   a  and  2   a  are formed in the side and in the lower portion of the front surface of the main body  1  and in the front surface of the open-close door  2 .  
         [0037]    A door knob  4  is provided in the center of the open-close door  2 . The manipulation of the door knob  4  is transmitted to the rear surface of the open-close door  2  by a knob rod  4   a . FIG. 2 schematically illustrates the internal structure of the main body  1 . A memory cartridge holder  5  for accommodating the memory cartridge B is provided in the rear portion of the open-close door  2 . A plurality of substrate boards P on which electronic parts for constituting an electronic circuit component such as an input and output interface and a computer are mounted are provided in the lower portion of the memory cartridge holder  5 . A rear surface panel  3  molded by the aluminum die casting is provided in the aperture of the rear surface of the main body  1 . A connector  6  for external wiring lines is provided in the rear surface panel  3 .  
         [0038]    [0038]FIG. 4 illustrates the structure of the rear surface of the open-close door  2 . A latch plate  7  for latching the open-close door  2  to the main body  1  is fixed to the end of the other side of the knob rod  4   a  for fixing the door knob  4 . A pressing roller  8  is rotatably mounted in the end of the latch plate  7 . A locking groove  7   a  locked to the following latch mechanism is provided on the side of the latch plate  7 . The knob rod  4   a  of the latch plate  7  is elastically supported by a tension coil spring  9  in the direction where the open-close door  2  is unlatched from the main body  1 . When the open-close door  2  is opened, as illustrated in FIG. 4, the right position of the knob rod  4   a  is maintained. Pressing rollers  10  and  11  that are elastically supported by plate springs  12  and  13  are rotatably provided on both sides of the other side of the open-close door  2 . As mentioned later, the loaded memory cartridge B is pressed by the pressing rollers  10  and  11 .  
         [0039]    Reference numeral  14  denotes a seesaw lever rotatably supported  15   a  to the upstanding part of a base plate  15  fixed to the bottom surface of the open-close door  2  so as to swing. When the open-close door  2  is latched to the main body  1  as illustrated in FIG. 5, in the seesaw lever  14 , a manipulation end  14   a  is pressed on the side wall of the main body  1  and an operation end  14   b  swings so that the rear end of the memory card CM that stores the later-mentioned system control program is pressed by a pressing pin  14   d  elastically supported by a compression coil spring  14   c  built in the leading end of the seesaw lever  14  to thus prevent the memory card CM from being detached from a multi-connector Cl. When the open-close door  2  is unlatched from the main body  1 , the seesaw lever  14  is returned to the right position by the operation of a twist coil spring  16  so that the protrusion  4   b  of the knob rod  4   a  contact the seesaw lever  14  as illustrated in FIG. 4. Therefore, the rotation of the knob rod  4   a  is prevented so that the door knob  4  does not unnecessarily rotate.  
         [0040]    The open-close door  2  having the above structure is fixed to the main body  1  by a hinge mechanism  17 . However, when the open-close door  2  is unlatched from the main body  1 , it is possible to prevent the open-close door  2  from swinging by itself and to thus fix the open-close door  2  to the right position by using a toggle spring structure for the hinge mechanism  17 . A concave groove  2   a  is formed in the outer circumference of the inside of the open-close door  2 . A packing  18  made of a material having air tightness and water tightness and preventing static electricity and electromagnetic waves from entering is buried in the concave groove  2   a.    
         [0041]    [0041]FIG. 6 is a perspective view illustrating the external appearance of the memory cartridge holder  5  for accommodating the memory cartridge B. An aperture  5   a  is formed in the front end and a latch mechanism  19  is provided in the center of the top plate that contacts the aperture  5   a . As illustrated in FIG. 7, the latch mechanism  19  is formed by bending one plate spring. A main body  19   a  is fixed to the top plate of the memory cartridge holder  5  by appropriate means such as welding. An elastic piece  19   b  and a locking piece  19   c  are formed in the free end of the plate spring. Therefore, when the door knob  4  is rotated in order to latch the open-close door  2  to the main body  1 , the latch plate  7  sliding contacts the elastic piece  19   b  so that the open-close door stops in the right position by sliding contact friction greater than the tension of the tension coil spring  9 . The locking piece  19   c  is formed to generate a click sense by locking the protrusion to the locking groove  7   a  of the latch plate  7  so that the door knob  4  is correctly manipulated.  
         [0042]    On the other hand, a switch lever  20  elastically supported by a tension coil spring  21  is provided in the top plate of the memory cartridge holder  5  so as to swing about a support point  20   a . Therefore, as illustrated in FIG. 7, when the latch plate  7  approaches the latch mechanism  19 , the side end of the latch plate  7  presses the leading end  20   b  of the switch lever  20 . Therefore, a rear end  20   c  swings to thus operate the switch provided in the rear surface of the memory cartridge holder  5 . Therefore, an electric signal for sensing that the open-close door  2  is latched to the main body  1  is obtained and is transmitted to a control circuit.  
         [0043]    The memory cartridge B to be loaded in the main body  1  has the external appearance illustrated in FIG. 3. A case-shaped main body  22  is molded by the aluminum die casting. In order to accommodate the plurality of memory cards DM using semiconductor memory elements as data recording media as illustrated in FIG. 8, a hollow portion  22   a  is formed in the main body  22 . The number of memory cards DM varies in accordance with how the entire memory capacity is set. However, according to the present embodiment, seven memory cards can be accommodated. When the memory capacity of one memory card is 1.2 GB (gigabyte), the entire memory capacity is 8.4 GB by a simple calculation. The memory cards DM are connected to multi-connectors C 2  and C 3  and can be connected to the data recording device A by a multi-connector C 4 .  
         [0044]    Therefore, as illustrated in FIG. 8, when the memory cards DM are arranged in parallel in the main body  22 , the number of memory cards DM accommodated in one direction is smaller than the number of memory cards DM accommodated in the other direction by one. Therefore, in the memory cartridge B, the top plate in the portion where a smaller number of memory cards DM are accommodated is molded to become a top plate  22   d  lower by one stage. A space on the formed top plate  22   d  is used as a memory slot so as to accommodate the above-mentioned memory cards CM. Therefore, the memory cards DM accommodated in the main body  22  are exclusively used for recording data and the system control program is stored in the memory cards CM. As mentioned above, step difference is formed in the top plate of the memory cartridge B so that the memory cartridge B is unsymmetrical. Therefore, it is possible to prevent the memory cartridge B from being loaded in the data recording device a in a wrong direction. Also, the memory cards CM and the memory cards DM in which semiconductor memory elements are used as memory elements are commonly distributed. However, since it is possible to use memory cards in which hard disks are used as the memory elements, the subject of the present invention is not changed even any memory cards are used.  
         [0045]    It is possible to take the memory cartridge B from the data recording device A by forming the memory cartridge B to be exclusively used for recording. The contents of the memory cards DM of the memory cartridge B having portability can be read by an editing device provided in another space and can be erased. On the other hand, since the memory cards CM can be taken out from and put in the multi-connector C 1  as illustrated in FIG. 5, it is possible to take only the memory cards CM so that an updated and changed system control program can be recorded in the memory cards CM.  
         [0046]    In order to realize the above aspect, to improve the manipulation and the convenience of use, and to secure the safety of the system, the memory cartridge B according to the present invention has the later-mentioned characteristic structure. First, since the memory cartridge B can be attached to and detached from the data recording device A, in particular, in order to facilitate the manipulation when the memory cartridge B is taken out from the data recording device A, a handle  23  is mounted in the main body  22  so that the memory cartridge B is taken out by gripping the handle  23 .  
         [0047]    The handle  23  includes pressure receiving portions  23   c  on both sides of the front end thereof and is U-shaped as illustrated in FIG. 8. A supporting roller  24  is provided in a supporting beam  23   a  in one direction so that the supporting beam  23   a  can proceed and recede in a guide groove  22   b  formed on the side of the main body  22 . The handle  23  is elastically supported by the compression coil spring  25  to thus always protrude outside the main body  22 .  
         [0048]    On the other hand, a supporting beam  23   b  includes a supporting roller  26  to thus proceed and recede in a guide groove  22   c  formed on the side of the main body  22 . As illustrated in FIG. 9, a protruding end  23   c  is formed in the leading end of the supporting beam  23   b . A locking member  27  in which a hook  27   a  hooked to the protruding end  23   c  is formed is arranged inside the guide groove  22   c . The hook  27   a  in the leading end of the locking member  27  is always elastically supported to thus fall in the guide groove  22   c . A pressure receiving end  27   b  that receives the pressure for fluctuating the locking member  27  is formed in the rear end of the locking member  27 .  
         [0049]    Since the supporting beam  23   b  has the above-mentioned structure, when the handle  23  proceeds in the state of FIG. 8, since the protruding end  23   c  is hooked to the hook  27   a  of the locking member  27 , as illustrated in FIG. 10, it is possible to accommodate the handle  23  in the main body  22  and to thus fix the handle  23  to the main body  22 . Also, when the memory cartridge B is loaded in the data recording device A, a pressing pin  28  (refer to FIG. 6) suspended from the top plate of the memory cartridge holder  5  in the position where the memory cartridge B is loaded in the data recording device A presses the pressure receiving end  27   b  that contacts the top plate of the main body  22  as illustrated in FIG. 3. Therefore, The protruding end  23   c  is unlocked from the hook  27   a . The detailed contents of such a function will now be described.  
         [0050]    Next, an eject/lock mechanism  29  for accommodating the handle  23  in the main body  22  so that the handle  23  is fixed to the main body  22  and for popping out the handle  23  from the main body  22  will now be described.  
         [0051]    The eject/lock mechanism  29  is provided on the side of the front end of the aperture of the memory cartridge B as illustrated in FIG. 3. The detailed structure thereof will be illustrated in FIG. 11. In FIG. 11, reference numeral  30  denotes a lock lever that is rotatably supported by a slide member  31  to thus swing so that a hook  30   b  in the leading end of the lock lever  30  swing about a supporting point  30   a  in accordance with the reciprocating motion of the slide member  31 . The slide member  31  is elastically supported by the tension coil spring  32  having tension weaker than the tension of the tension coil spring  25  of the above-mentioned supporting beam  23   a  to thus maintain the lock lever  30  in the right position. A magnetic body  33  is fixed to the slide member  31 . A solenoid  34  for sucking the magnetism of the magnetic body  33  by a yoke  34   a  is fixed to the main body  22 . The magnetism sucking force of the solenoid  34  is set to be stronger than the tension of the compression coil spring  25 .  
         [0052]    Since the eject/lock mechanism  29  has the above structure, when the memory cartridge B is loaded in the data recording device A, the locking of the handle  23  is performed by hooking a lock pin  35  included in the handle to the hook  30   b  of the lock lever  30 . When the handle  23  is accommodated in the main body  22  so that the handle  23  is fixed to the main body  22  in a state where the memory cartridge B is taken out from the data recording device A so that the memory cartridge B becomes a single body, as mentioned above, the locking of the handle  23  is performed by hooking the protruding end  23   c  of the supporting beam  23   b  to the hook  27   a  of the locking member  27  to thus improve the portability of the memory cartridge B.  
         [0053]    Next, the operation state of the eject/lock mechanism  29  when the memory cartridge B is loaded in the data recording device A will now be described. When the memory cartridge B is loaded in the data recording device A, as illustrated in FIG. 12, the handle  23  is popped out. According to the state illustrated in FIG. 12, since the main body  22  of the memory cartridge B is in the position where the memory cartridge B is loaded and stopped, as mentioned above, the pressing pin  28  suspended from the top plate of the memory cartridge holder  5  presses the pressure receiving end  27   b  of the locking member  27  and the protruding end  23   c  is unhooked from the hook  27   a  so that the handle  23  is popped out by the operation of the compression coil spring  25 .  
         [0054]    When the open-close door  2  is rotated in the latching direction in this state, as illustrated in FIG. 13, the pressing roller  8  of the latch plate  7  presses the center of the handle  23  so that the handle  23  begins to recede. When the recession of the handle  23  proceeds, the pressure receiving portions  23   c  on both sides of the front end of the handle  23  are pressed by the pressing rollers  10  and  11  arranged on both sides of the other side of the open-close door  2 . When the handle  23  reaches the position in which the open-close door  2  is completely latched, the multi-connector C 4  in the rear end of the memory cartridge B is connected to the multi-connector of the data recording device A by the final pressure of the pressing rollers  10  and  11 .  
         [0055]    At this time, the pressing roller  8  of the latch plate  7  is disconnected from the end of the handle  23 . At the same time, the manipulation end  14   a  of the seesaw lever  14  swings in a state of being connected to the side wall of the main body  1  so that the door knob  4  is rotatable. On the other hand, the pressing pin  14   d  in the leading end of the swung seesaw lever  14  presses the rear end of the memory cards CM loaded in the top plate of the memory cartridge holder  5  to thus prevent the memory cards CM from being detached from the multi-connector C 1 . In this state, since the pressing rollers  10  and  11  are elastically supported by the plate springs  12  and  13 , the memory cartridge B is always pressed in the loading direction to thus firmly connect the memory cards DM to the multi-connectors C 2  and C 3 . By doing so, when the handle  23  is completely accommodated in the main body  1 , the lock pin  35  of the handle  23  is hooked to the hook  30   b  of the lock lever  30 .  
         [0056]    In this state, when the door knob  4  is rotated, the latch plate  7  is latched as illustrated in FIG. 7 so that the latch operation of the open-close door  2  is completed. At this time, since the switch lever  20  provided in the top plate of the memory cartridge holder  5  swings, a switch operates in the rear end  20   c  thereof. When it is sensed that the memory cartridge B is loaded by the electric signal, the solenoid  34  starts to be supplied with electricity so that the locking state is maintained by the eject/lock mechanism  29 .  
         [0057]    Then, the operation state when the memory cartridge B is taken out from the data recording device A will now be described. As mentioned above, according to the present invention, since the semiconductor memory elements are used as the data recording media, a computer is mounted in the main body of the data recording device A so that data is recorded by the computer control. Therefore, when the memory cartridge B is taken out from the data recording device A, it is necessary to completely shut down the electronic circuits such as the computer in the main body  1 . If the memory cartridge B is taken out during the operation of the electronic circuits such as the computer, the data stored in the memory cartridge B may be damaged. Therefore, according to the present invention, the following safety measures are taken.  
         [0058]    That is, the handle  23  is not popped out, as illustrated in FIG. 14, from right after the open-close door  2  is opened in order to take the memory cartridge B from the data recording device A to until the electronic circuits are shut down. When the door knob  4  is rotated in order to open the open-close door  2 , the switch lever  20  is returned to the original position. Then, the switch operates again in the rear end  20   c  thereof and the electric signal for sensing the open-close door  2  is opened is transmitted. Therefore, the electronic circuits start to be shut down. However, at this point of time, the solenoid  34  of the memory cartridge B remains supplied with electricity so that the locking state is maintained by the eject/lock mechanism and the handle  23  is not popped out even if the open-close door  2  is opened.  
         [0059]    When the electronic circuits are completely shut down, the flow of electricity to the solenoid  34  is intercepted so that the sucking force of the slide member  31  is reduced by the magnetic force of the yoke  34   a . At the same time, the compression coil spring  25  that elastically supports the supporting beam  23   a  of the handle  23  operates and the handle  23  is popped out as illustrated in FIG. 12 so that the memory cartridge B can be taken out by gripping the handle  23 .  
         [0060]    By doing so, the memory cartridge B taken out from the data recording device A set in an airplane can be carried as a single body by accommodating the handle  23  in the main body  22 . Also, it is possible to download the data recorded in the memory cartridge B by the data recording device A provided in another place or an exclusively used recording and reproducing device and keep the downloaded data and to reuse the memory cartridge B by erasing the record of the memory cartridge B.  
         [0061]    FIGS.  15  to  25  illustrate examples of other structures of the present invention, in which the number of memory cards accommodated in the memory cartridge is increased to thus cope with a case in which the memory cartridge holder is large. FIG. 15 illustrates the data recording device A completed to meet such a request. An open-close door  51  in which a door knob  52  is provided in the upper portion of the front surface and a side slot sealing cover  53  are provided in the main body  50  of a heat radiation structure. FIG. 16 illustrates a state in which the open-close door  51  is opened.  
         [0062]    Next, the memory cartridge B for loading the data recording device A in the main body  50  includes the external appearance illustrated in FIG. 17. A case-shaped main body  54  is sealed and has its inside hollow in order to accommodate a plurality of memory cards using semiconductor memory elements as data reading media. Like in the above-mentioned embodiment, the accommodated memory cards are connected to the multi-connectors so that the memory cards can be connected to the data recording device A.  
         [0063]    A concave portion  54   a  for allowing the fingers of a operator to be positioned is formed in the front surface of the main body  54  of the cartridge B. A handle  55  whose grip is positioned in the concave portion  54   a  is provided. As illustrated in FIG. 18, a piece  55   a  having a locking concave portion  55   b  is integrated with the central lower end of the grip of the handle  55 . Cranks  55   c  and  55   d  of the handle  55  formed as mentioned above are mounted in the main body  54  so as to freely rotate by a pivoting pin. Also, a slide  56  is mounted on both sides of the main body  55  so that the main body  55  can be easily loaded in the main body  50 .  
         [0064]    An elastic supporting mechanism  57  for the handle  55  is provided in the front surface of the main body  54  that is in the rear surface of the crank  55   d  of the handle  55  as illustrated in FIGS. 19 and 20. The rear end of the elastic supporting mechanism  57  is supported to a holder  58 . The front end of the elastic supporting mechanism  57  elastically supports a rod pin  59  supported by the through hole portion  54   b  in the front surface of the main body  54  by a compression coil spring  60 . As mentioned later, when a restriction state in which the handle  55  is integrated with the main body  54  of the memory cartridge is cancelled, the rod pin  59  jumps out from the through hole  54   b  due to the elastic supporting force of the compression coil spring  60 . As a result, as illustrated in FIG. 20, the handle  55  is popped out.  
         [0065]    In order to accommodate the memory cartridge B having the above structure, a memory cartridge holder  61  formed on the rear side of the open-close door  51  of the main body  50  of the data recording device A is, as illustrated in FIG. 21, a box-shaped body in which an accommodating space surrounded by a top plate  61   a , a bottom plate  61   b , and a side plate  61   c  is formed. In the front surface of the memory cartridge holder  61 , an aperture  61   e  is formed. On the side of the side plate  61   d , a side slot  62  for loading memory cards for controlling a system is provided.  
         [0066]    On the other hand, an electromagnetic solenoid  63  is fixed to the side of the side plate  61   c . On the other side of the bottom plate  61   b , a lock/unlock mechanism  64  of the handle  55 , which is operated by the electromagnetic solenoid  63 , is provided. As illustrated in FIG. 22, the lock/unlock mechanism  64  is formed so that a rod  63   a  of the electromagnetic solenoid  63  is connected to an end  64   a  of the lever arm  64  by a pin  65 , that the end  64   a  is connected to a tension coil spring  66 , and that the lever arm  64  swings about a pivoting pin  67  fixed to the bottom plate  61   b.    
         [0067]    Since the other end  64   b  of the lever arm  64  is connected to an end  68   a  of a link arm  68 , the link arm  68  proceeds and recedes in accordance with the swing of the lever arm  64 . A pivoting pin  69  fixed to the other end  68   b  of the link arm  68  is inserted into a through hole  72   a  of a latch block  72  pivotally supported by a pin  71  of a holder  70  fixed to the bottom plate  61   b . Therefore, when the link arm  68  proceeds and recedes, the latch block  72  swings in accordance with the reciprocation of the link arm  68 .  
         [0068]    [0068]FIGS. 23 and 24 illustrate the operation states of the latch block  72 . FIG. 23 illustrates a state in which the electromagnetic solenoid  63  is supplied with electricity. At this time, the lever arm  64  swings in a clockwise direction against the operation of the tension coil spring  66  in FIG. 22. The link arm  68  recedes so that the top side  72   a  of the latch block  72  is locked to the locking concave portion  55   b  of the piece  55   a  of the handle  55 . Therefore, the handle  55  is fixed to the main body  54  so that the grip of the handle  55  cannot be gripped.  
         [0069]    [0069]FIG. 24 illustrates a state in which the flow of electricity to the electromagnetic solenoid  63  is intercepted. The lever arm  64  swings in a counter-clockwise direction by the operation of the tension coil spring  66  in FIG. 22. The link arm  68  proceeds so that the latch block  72  swings. Therefore, the top side  72   a  is unlocked from the locking concave portion  55   b  of the piece  55   a  of the handle  55 . In this state, since the rod pin  59  of the elastic supporting mechanism  57  jumps out, as illustrated in FIG. 20, the handle is popped so that the grip of the handle  55  can be gripped.  
         [0070]    Then, a state in which the memory cartridge B is loaded in the data recording device A will now be described. As illustrated in FIG. 16, the open-close door  51  of the data recording device A is opened and the memory cartridge B is loaded with opening  61   e  of the memory cartridge holder  61 , and the open-close door  51  is latched as illustrated in FIG. 15 and the door knob  52  is rotated to thus lock the open-close door  51 , and thus elastic pressing members  51   a  and  51   b  provided in the rear surface of the open-close door  51  illustrated in FIG. 25 press the cranks  55   c  and  55   d  of the handle  55 , simultaneously turning on the electricity to the electromagnetic solenoid  63  is started. Therefore, as illustrated in FIG. 23, the latch block  72  is locked to the locking concave portion  55   b  of the handle  55  so that the handle  55  is locked, so that the stableness of said loaded memory cartridge B is maintained.  
         [0071]    When the loaded memory cartridge B is taken out from the data recording device A, the open-close door  51  is unlocked by the door knob  52  to thus open the open-close door as illustrated in FIG. 16. When the open-close door  51  is opened, the shut down of the electronic circuits starts based on the signal obtained by the switch means that moves after the open-close door  51 . When the shut down of the electronic circuits is completed, the electromagnetic solenoid  63  operates due to the signal based on the shut down of the electronic circuit and the handle  55  is unlocked as illustrated in FIG. 24 so that the memory cartridge B can be taken out from the data recording device A by gripping the grip of the handle  55 .  
         [0072]    As mentioned above, according to the aspect of claim  1 , the memory cartridge comprises a handle capable of being popped out, so that it is possible to easily eject memory cartridge from data recording device. According to the aspect of claim  2 , since the popped-out handle is fixed to the main body of the memory cartridge, it is possible to improve potability thereof. According to the aspect of claim  3 , the memory cartridge comprises the eject/lock mechanism. Therefore, it is possible to pop out the handle by the control from the main body of the data recording device. According to the aspect of claim  4 , the handle of the memory cartridge is popped out after completion of the shut-down of the main body of the data recording device. So thus, it is possible to protect data that is recorded in the memory card of the memory cartridge. According to the aspects of claims  5  and  6 , it is possible to mount firmly the memory cartridge to the data recording device, and prevent separation or bad connection due to vibrations.