Abstract:
In a personal computer, preferably a lap-top-type personal computer, first latch members (or sections) and second latch members (or sections) are provided on a bezel surrounding a periphery of a keyboard. The first and second latch members serve to support one side of the keyboard. By having a bottom surface of the second latch members made a sloping surface, when a user pushes the keyboard upward with a finger from below the keyboard slides backward at a slope without interfering with the first latch members. As such, the front part of the keyboard is released from the latching by the first latch members and the second latch members and can be easily and simply removed.

Description:
FIELD OF THE INVENTION  
         [0001]    The present invention relates to laptop computers and other devices having a keyboard as an integral component and more particularly to devices wherein ease of removal of the keyboard is desirable.  
         BACKGROUND OF THE INVENTION  
         [0002]    As shown in FIG. 7, a notebook PC has a configuration in which a monitor section  1  displaying an image and a main body  3  provided with a keyboard section  2  are linked so as to allow opening and closing. The main body  3  comprises a housing  4  called a clamshell that forms a shell with the monitor section  1  and main body  3  folded together, a bezel  5  fitted around the keyboard section  2  with the monitor section  1  and main body  3  open, and a keyboard section  2 , and is configured such that a motherboard, HDD, memory, and so forth, are incorporated in the internal space A enclosed by the housing  4 , bezel  5 , and keyboard section  2 .  
           [0003]    The keyboard section  2  is a unit formed by the attachment of a plurality of keys  6  and circuit boards (not shown) to a base panel  7 . Conventionally, in many cases this kind of keyboard section  2  is fixed as an entity to the bezel  5  by means of screws, etc. With this kind of construction, the keyboard section  2  is generally fixed with screws from the rear side (the internal space A side) of the bezel  5 .  
           [0004]    With this kind of conventional construction it is necessary to remove the bezel  5  from the housing  4  in order to remove the keyboard section  2 , and it is not anticipated that the keyboard section  2  will be removed after shipment.  
           [0005]    These days, however, PC customization is widely carried out, including memory expansion, HDD replacement, and incorporation of expansion devices. Consequently, PC manufacturers&#39; customer service representatives and PC retail outlets may receive such requests from users, or users themselves may undertake such customization. There is thus a desire for a construction that allows even an inexperienced service representative or user to easily remove the keyboard section  2 .  
           [0006]    Some recent models allow easy removal of the keyboard section  2  from the housing  4  and bezel  5 . FIG. 7 shows an example of a PC that has a construction that allows the keyboard section  2  to be removed from the bezel  5  with a one-touch operation. This PC is configured so that the two mutually opposing sides of the keyboard section  2  are latched by latch sections  10  and  11  formed on the bezel  5 . Also, receiving sections  12  and  13  are provided at positions corresponding to latch sections  10  and  11  in order to support the keyboard section  2 . The keyboard section  2  is arranged so as to be held with its front part  2   a  and rear part  2   b  sandwiched above and below by receiving sections  12  and  13  and latch sections  10  and  11 .  
           [0007]    In the fitted state, the keyboard section  2  is positioned with, for example, the front part  2   a  pressed against a stopper  14  formed on receiving section  12 . Therefore, a pin  15  projecting downward is formed on the keyboard section  2 , and a positioning claw is provided at a position corresponding to the pin  15 . By means of the force of the positioning claw  16  arising due to elastic deformation, pressure is applied to the pin  15  and the keyboard section  2  is pressed against the stopper  14 .  
           [0008]    When removing the keyboard section  2 , the user (or service representative: hereinafter referred to simply as “user”) inserts a finger in a hole (not shown) formed in the housing  4  from the underside of the main body  3 , and touches the vicinity of the front part  2   a  from the rear side (internal space A side) of the keyboard section  2 . Then, by pressing this part toward the rear part  2   b , the user slides the keyboard section  2  toward the rear part  2   b  (see an arrow ( 1 ) in FIG. 7). When the keyboard section  2  slides a predetermined distance, the front part  2   a  of the keyboard section  2  is freed from the latch section  10 , and by rotation of the keyboard section  2  around the rear part  2   b  still sandwiched between latch section  11  and receiving section  13  in this state, the front part  2   a  is pushed up, and is freed from the bezel  5  (see an arrow ( 2 ) in FIG. 7). If the keyboard section  2  is then pulled toward the front part  2   a , the rear part  2   b  is also pulled out from between latch section  11  and receiving section  13 , and as a result the keyboard section  2  is completely removed from the bezel  5  (see an arrow ( 3 ) in FIG. 7). The keyboard section  2  can be fitted into the bezel  5  by carrying out the reverse of the above described procedure.  
           [0009]    However, with the above described conventional configuration, several problems arise as described below.  
           [0010]    As described above, the following operations are necessary in order to remove the keyboard section  2 :  
           [0011]    (1) Slide toward the rear part  2   b    
           [0012]    (2) Push up toward the front part  2   a  when freed from latch section  10   
           [0013]    (3) Pull out from between latch section  11  and receiving section  13  of the rear part  2   b    
           [0014]    If operation (2) is performed before operation (1), for example, the front part  2   a  of the keyboard section  2  is not freed from latch section  10 , and therefore the keyboard section  2  cannot be removed neatly.  
           [0015]    As a result, push-up operation (2) is performed forcibly before slide (1) has been completed—that is, before the front part  2   a  of the keyboard section  2  has been freed from latch section  10 —and the bezel  5  or keyboard section  2  may be damaged.  
           [0016]    The present invention takes account of such technical problems, and has as its object the provision of a computer apparatus and keyboard that enable removal of the keyboard section to be carried out more easily and surely.  
         SUMMARY OF THE INVENTION  
         [0017]    Based on this object, in a computer apparatus of the present invention the keyboard section is fitted to the housing in a removable manner, and this housing comprises a latch section that latches the keyboard section and a guide section that performs guidance so that the keyboard section is kept clear of the latch section when removed from the housing. More specifically, the latch section has a latch surface that is formed so as to project from the housing toward the inside of the aperture for accommodating the keyboard section, and latches the keyboard section. The guide section has a guide surface that is formed so as to project from the housing toward the inside of the aperture and, from base-end to tip-end, slopes from the inside (bottom surface side of the keyboard section) to the outside (surface side of the keyboard section) of the housing. This kind of computer apparatus can be a so-called notebook type in which the control unit is incorporated below the keyboard section inside the housing.  
           [0018]    For the keyboard of the present invention, a window that supports a base is formed in the bezel, in which window is formed a first supporting section that supports one side of the base and a second supporting section that supports the other side, and the second supporting section has a latch member whose bottom surface is a sloping surface that rises gradually from base-end to tip-end.  
           [0019]    This second supporting section can further have another latch member whose bottom surface is a flat surface. In this case, as regards the bottom surface of the latch member, it is desirable for the base-end to be positioned lower than the bottom surface of the other latch member. Also, it is desirable for the latch member to be formed more toward the center part of the keyboard than the other latch member. By this means, when the vicinity of the center part of the keyboard is raised in order to remove the keyboard, the base first hits the latch section that has a sloping surface.  
           [0020]    This kind of keyboard can be applied to a standalone keyboard and also to a computer apparatus or other device of such form as to have a control unit below the base.  
           [0021]    The present invention can be taken as a keyboard unit comprising a bezel fitted to its periphery, and as regards this keyboard unit, a supporting section that supports the keyboard section is formed on the bezel, and a guide section is formed that, when one side of the keyboard section is raised from below in an upward direction, slides it toward the other side of the keyboard section and moves the one side diagonally upward, thereby releasing support of that keyboard section by means of the supporting section. This guide section can be formed on the bezel side, or can be formed on the keyboard section side.  
           [0022]    It is desirable for this guide section to be formed so as to project toward the inside of the aperture formed in the bezel, and to gradually decrease in thickness from base-end to tip-end.  
           [0023]    Also, if the supporting section and guide section are formed consecutively on the surface of the bezel, a design is possible whereby the user is not made aware of the function of the supporting section and guide section.  
           [0024]    The present invention can be taken as a bezel fitted to the periphery of a keyboard unit, comprising, on one side of the aperture for accommodating the keyboard section, a first latch member whose bottom surface is a flat surface, and a second latch member whose bottom surface is a sloping section that rises gradually from base-end to tip-end.  
           [0025]    At this time, a third latch member that extends from the periphery of the aperture toward one side of the aperture can be further provided on the other side of the aperture.  
           [0026]    Also, a wall section that is virtually orthogonal to the surface of the bezel can be further provided on one side of the aperture, and on the lower part of this wall section, an extending section that extends toward the other side of the aperture can be provided, and the keyboard section can be received by this extending section. Moreover, if the keyboard section accommodated in the aperture is forced toward the wall section by a forcing section, the keyboard section can be positioned at this wall section. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0027]    Hereafter, the present invention will be described in detail in accordance with the embodiment(s) shown in the accompanying drawings, in which:  
         [0028]    [0028]FIG. 1 is a drawing showing a configuration of a PC according to this embodiment;  
         [0029]    [0029]FIG. 2 is an oblique drawing showing a configuration of the bezel of a keyboard section of a PC;  
         [0030]    [0030]FIG. 3A is a drawing showing a positioning claw formed on the bezel, and FIG. 3B is a drawing showing the state in which the keyboard section is pressed to one side by a positioning claw;  
         [0031]    [0031]FIG. 4A is a drawing showing a latched state of a first latch section and the keyboard section, and FIG. 4B is a drawing showing a latched state of a second latch section and the keyboard section;  
         [0032]    [0032]FIG. 5 is an oblique drawing showing a first latch section and second latch section formed on the bezel;  
         [0033]    [0033]FIG. 6 is a drawing showing the state where the keyboard section is detached from the bezel; and  
         [0034]    [0034]FIG. 7 is a drawing showing movements when the keyboard section is detached from the bezel in the case of conventional construction.  
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0035]    As shown in FIG. 1, a notebook PC (computer apparatus)  20  has a configuration in which a monitor section (display unit)  1  displaying an image and a main body  3  provided with a keyboard section  2  are linked so as to allow opening and closing. The main body  3  has an aperture in the top, and comprises a tray-shaped housing  4  that accommodates a motherboard, HDD, memory, and similar control units, a keyboard section  2  as input means, and a bezel  30  fitted to the top of the housing  4  and positioned around this keyboard section  2 .  
         [0036]    In this embodiment the direction from side  3   a  on which the main body  3  is linked to the monitor section  1  to side  3   b  opposite is called the “front-back direction” and the direction orthogonal to this is called the “lateral direction”.  
         [0037]    The keyboard section  2  has the same configuration as shown in FIG. 7, being a unit formed by the attachment of a plurality of keys  6  which are vertically movable and circuit boards (not shown) to a base panel (base)  7 .  
         [0038]    Here, the base panel  7  has an external shape corresponding to the arrangement of the plurality of keys  6 , and a peripheral wall section  7   a  rising to a predetermined height is formed on virtually its entire periphery.  
         [0039]    As shown in FIG. 2, the bezel  30  has an aperture (window)  30   a  following the external shape of the keyboard section  2 . On this aperture  30   a  is formed, around almost the entire periphery of the aperture  30   a , a peripheral wall (stopper, wall section)  31  that faces the rear surface of the bezel  30  and extends in a virtually orthogonal direction with respect to the face surface  30   b  of the bezel  30  that forms a surface that is exposed on the user side on the outer periphery of the keyboard section  2 .  
         [0040]    Also, as shown in FIG. 2 and FIG. 3A, there is fitted on the bezel  30 , in the center part in the lateral direction and in a position that is at the front in the front-back direction when the user is facing the PC  20 , a bridge  33  positioned so as to extend toward the inside of the aperture  30   a  from the peripheral wall  31  in order to form an insertion hole  32  into which the user inserts a finger when removing the keyboard section  2 . Moreover, in this bridge  33  is formed a hole  34  for the passage of a pin  15  fitted to the rear surface of the keyboard section  2 , and a positioning claw (pressing member, forcing section)  16  is formed in this hole  34  so as to project downward. As shown in FIG. 3B, this positioning claw  16  is formed so as to slope in a predetermined direction toward the lower part  16   a  (a direction such that the lower part  16   a  extends into the hole  34 ), and when the pin  15  of the keyboard section  2  passes through the hole  34 , this pin  15  is pressed in a predetermined direction by the force generated by its own elastic deformation.  
         [0041]    As shown in FIG. 2, receiving sections (extending sections)  35  that receive the base panel  7  of the keyboard section  2  are formed on the lower part of the peripheral wall  31 , at a plurality of places around it, projecting toward the inside of the aperture  30   a . In this embodiment, the receiving sections  35  are configured so as to be provided at virtually predetermined intervals at a plurality of places around the peripheral wall  31 , but this is not a limitation, and continuous formation around the peripheral wall  31  is also possible.  
         [0042]    In the aperture  30   a  of the bezel  30 , there is formed on the side opposite the side on which the bridge  33  is provided (on the side on which the main body  3  and monitor section  1  are linked in FIG. 1) latch sections (first supporting sections, supporting sections, third latch members)  36  that extend in a visor shape toward the side on which the bridge  33  is provided, consecutive to the upper part of the peripheral wall  31 —that is, the face surface  30   b  of the bezel  30 . These latch sections  36  are provided on both sides in the lateral direction of the aperture  30   a.    
         [0043]    By this means, one side of the keyboard section  2 , in the same way as in the case in FIG. 7, is supported by being sandwiched above and below between the receiving sections  35  and latch sections  36 .  
         [0044]    Meanwhile, in the aperture  30   a , there are provided, on the side on which the bridge  33  is provided, first latch sections (latch sections, second supporting sections, supporting sections, first latch members)  37  and second latch sections (guide sections, second supporting sections, latch members, second latch members)  38  consecutive to the upper part of the peripheral wall  31 —that is, the face surface  30   b  of the bezel  30 .  
         [0045]    The first latch sections  37  are formed on both sides of the aperture  30   a  in the lateral direction. As shown in FIG. 4A and FIG. 5, first latch sections  37  are formed so that the tip-end  37   a  is a predetermined distance T 1  from the peripheral wall  31 . Also, these first latch sections  37  are formed so that the bottom surface (latch surface)  37   b  is virtually orthogonal to the peripheral wall  31 .  
         [0046]    As shown in FIG. 2, second latch sections  38  are formed in the lateral direction of the aperture  30   a  at two places a predetermined distance further toward the center part than the first latch sections  37  on both sides. That is, the configuration is such that second latch sections  38  are provided on the nearer side on both sides of the insertion hole  32  formed in the bridge  33 , and first latch sections  37  are further provided on the outer side.  
         [0047]    As shown in FIG. 4B and FIG. 5, these second latch sections  38  are formed so that the tip-end  38   a  is a predetermined distance T 2  from the peripheral wall  31 . Here, a relationship T 1 &lt;T 2  is desirable between distance T 1  in the first latch sections  37  and distance T 2  in the second latch sections  38 , and it is further desirable for a difference of around 0.2 mm, for example, to be provided between distances T 1  and T 2 .  
         [0048]    The bottom surface (guide surface, sloping surface, sloping section)  38   b  of a second latch section  38  is not virtually orthogonal to the peripheral wall  31  as with the bottom surface  37   b  of a first latch section  37 , but is formed so as to slope at a predetermined angle with respect to the peripheral wall  31 . Here, the bottom surface  38   b  is formed so as to gradually approach the face surface  30   b  from the rear surface of the bezel  30  in the direction from the base (base-end) of the peripheral wall  31  side to the tip-end  38   a . More exactly, for the bottom surface  38   b , a sloping surface is formed so as to be positioned lower than the bottom surface  37   b  of the first latch section  37  in the part touching the peripheral wall  31  at the base of the second latch section  38 , and to be virtually the same height as the bottom surface  37   b  of the first latch section  37  on the tip-end  38   a  side.  
         [0049]    Now, the effective aperture of the aperture  30   a  of the bezel  30  is not formed by the peripheral wall  31 , but strictly speaking, as described above, is formed by the latch sections  36 , first latch sections  37 , and second latch sections  38 , projecting inward from this peripheral wall  31 . Thus, the aperture  30   a  has a configuration with an aperture size that is a predetermined dimension smaller than the base panel  7  of the keyboard section  2  in the front-back direction according to the latch sections  36 , first latch sections  37 , and second latch sections  38 . On the other hand, no projections whatever are provided on either side in the lateral direction in the aperture  30   a , and the aperture size is virtually the same as (slightly larger than) the base panel  7  of the keyboard section  2 .  
         [0050]    The keyboard section  2  is fitted to the bezel  30  with this kind of configuration as described below.  
         [0051]    As shown in FIG. 7, the keyboard section  2  has its rear part  2   b  supported by being sandwiched above and below between receiving sections  35  and latch sections  36 , and its front part  2   a  supported by being sandwiched above and below between the receiving sections  35  and the first latch sections  37  and the second latch sections  38 .  
         [0052]    In this state, as shown in FIG. 3, with regard to the keyboard section  2  the pin  15  projecting downward is located within the hole  34  in the bridge  33 , the pin  15  is pressed upon by the positioning claw  16  sloping in a predetermined direction, and as a result the front part  2   a  of the keyboard section  2  (front part of the base panel  7 ) is positioned by being pressed against the peripheral wall  31 . Also, the upper part of the peripheral wall section  7   a  of the base panel  7  of the keyboard section  2  is positioned lower than the base of the bottom surface  38   b  of the second latch sections  38 .  
         [0053]    Now, as shown in FIG. 6, to remove the keyboard section  2  from the bezel  30 , the user inserts a finger into a hole (not shown: formed in the battery pack installation section, etc.) formed in the housing  4  from the underside of the main body  3 . Then, when that finger is positioned in a part of the insertion hole  32  formed by means of the bridge  33  of the bezel  30 , it is possible to touch the rear side of the front part of the base panel  7  of the keyboard section  2 .  
         [0054]    Then, when the user pushes this part upward with that finger, the top of the peripheral wall section  7   a  of the base panel  7  of the keyboard section  2  is pressed against the bottom surface  38   b  of the second latch sections  38  located at either side of the part pushed upward. When this happens, since the bottom surface  38   b  of each second latch section  38  is a sloping surface, the base panel  7  is pushed upward at an angle, guided by this bottom surface  38   b . Along with this, the base panel  7  also moves upward at an angle as a unit in the area of the first latch sections  37  corresponding to those two sides in the lateral direction.  
         [0055]    As a result, when the peripheral wall section  7   a  of the base panel  7  has moved as far as the tip-end  38   a  of each second latch section  38 , it is released from the latched state due to the second latch sections  38 . At virtually the same time as this, the peripheral wall section  7   a  of the base panel  7  is released from the latched state due to the first latch sections  37  on either side.  
         [0056]    In the above described operations, the part of the base panel  7  pushed by the user&#39;s finger—that is, the vicinity of the center part in the lateral direction of the base panel  7 —actually bends into a state in which it is pushed upward further than both sides, and therefore is guided by first hitting the bottom surface  38   b  of the second latch sections  38  from the center. By this means, sliding in a backward sloping direction of the base panel  7 —that is, the keyboard section  2 —is performed surely.  
         [0057]    Thus, as a result of the front part  2   a  of the keyboard section  2  moving upward at a slope (backward at a slope) following the bottom surface  38   b  of the second latch sections  38 , although the keyboard section  2  continues to turn centered on the rear part  2   b  still sandwiched between the latch sections  36  and receiving sections  35 , sliding toward the rear occurs at the rear part  2   b . Then, if the keyboard section  2  is pulled toward the front part  2   a  when the front part  2   a  is freed from the first latch sections  37  and second latch sections  38  of the bezel  30 , the rear part  2   b  also is pulled out from between the latch sections  36  and receiving sections  35 , and by this means the keyboard section  2  is completely removed from the bezel  30 .  
         [0058]    According to a configuration of the kind described above, the second latch sections  38  with the bottom surface  38   b  that is a sloping surface are provided on a bezel  30 , so that it is possible for the keyboard section  2  to slide backward on a slope and latching of the front part  2   a  of the keyboard section  2  by first latch sections  37  and second latch sections  38  to be released simply by pushing upward with a finger. By this means, it is possible for the user to release the keyboard section  2  by means of a one-touch operation instead of sliding the keyboard section  2  by a process of feeling around. As a result, it is possible for the user himself or herself to carry out various kinds of tasks such as memory expansion or the like easily and surely.  
         [0059]    In the above described embodiment, a configuration is used whereby second latch sections  38  whose bottom surface  38   b  is a sloping surface are provided toward the center part of a keyboard section  2 , and the first latch sections  37  are provided on the outer side thereof, but this is determined based on the relationship to the place where force is applied at the time of removing the keyboard section  2 . Therefore, if both sides of the keyboard section  2  are pushed upward, for example, the second latch sections  38  whose bottom surface  38   b  is a sloping surface may be provided nearer the location at which force is applied.  
         [0060]    Also, if a secure latched state can be maintained such that the keyboard section  2  does not become detached unnecessarily in the normal state with only the second latch sections  38  whose bottom surface  38   b  is a sloping surface, the first latch sections  37  whose bottom surface  37   b  is a flat surface can be omitted.  
         [0061]    In addition, in the above described embodiment, the first latch sections  37  and the second latch sections  38  are provided toward the front of the keyboard section  2  as seen by a user facing the PC  20 , but this is not necessarily a limitation, and these may be provided at the rear (monitor section  1  side) of the keyboard section  2 , or may be provided on both sides or one side with respect to the lateral direction of the keyboard section  2 .  
         [0062]    Moreover, in the above described embodiment, the example of a so-called notebook PC has been given for the PC  20 , but this is not a limitation, and the same kind of configuration can also be applied to a standalone keyboard, a keyboard used for a device other than a PC, and so forth.  
         [0063]    The above described embodiment is an example of the preferred embodiment of the present invention. However, the present invention is not limited to the above described embodiment, and various modifications are possible without departing from the object of the present invention.