Patent Publication Number: US-2007099452-A1

Title: Apparatus of attaching part

Description:
This application claims priority under 35 U.S.C. §119 to Japanese Patent Application No. 2006-064394 filed on Mar. 9, 2006, and 2005-317965 filed on Nov. 1, 2005, the entire disclosure of which is incorporated herein by reference in its entirety.  
     Field of the Invention  
      The present invention relates, inter alia, to a part mounting device used in mounting a part, such as, e.g., an automobile part, to an mounting portion of a panel member, such as, e.g., an automobile panel member.  
     BACKGROUND OF THE INVENTION  
      The following description sets forth the inventor&#39;s knowledge of related art and problems therein and should not be construed as an admission of knowledge in the prior art.  
      A sun visor is typically mounted on a ceiling wall portion above an upper part of a windshield of an automobile. As a mounting device for mounting such a sun visor on the ceiling wall portion, Japanese Unexamined Laid-open Patent Publication No. 2001-1758 (hereinafter referred to as “Patent Document”) discloses a mounting structure in which a sun visor is mounted on a ceiling wall portion via a holder to be engaged with a mounting hole formed in the ceiling wall portion. The holder is equipped with a base portion which can hold a shaft portion of the sun visor and a stem portion protruded from this base portion. The stem portion has a pair of elastic engaging ledges formed at the opposed sides of the stem portion via slits and protruded portions formed below each elastic engaging ledge. On the other hand, the mounting hole formed in the ceiling wall portion has a round hole portion for accommodating the stem portion and a pair of opposed diameter-expanded portions formed from the periphery of the round hole portion. Dented portions to be engaged with the protruded portions of the holder are formed in the inner periphery of the round hole portion.  
      When the stem portion of the holder is inserted into the round hole portion from the front side of the mounting hole, the elastic engaging ledges are bent inwardly by being pressed by the inner periphery of the round hole portion. When the elastic engaging ledges reach the rear side of the round hole portion, the engaging ledges engage with the rear side periphery of the round hole portion and the protruded portions also engage with the dented portions, whereby the holder can be mounted on the ceiling wall portion. The detachment of the holder from the ceiling wall portion can be performed by rotating the holder to move the elastic engaging ledges to the diameter expanded portions of the mounting hole and then pulling out therefrom.  
      In the case of the structure as disclosed by the aforementioned Patent Document, the protruded portion engages with the dented portions of the periphery of the round hole portion so as not to rotate the holder. However, since the protruded portions are formed below the elastic engaging ledges which can be elastically deformed, if strong rotation force is applied to the sun visor, the elastic engaging ledges are bent inwardly to thereby release the engaging between the dented portions and the protruded portions, causing a rotation of the holder, which may result in detachment of the holder from the mounting hole.  
      The description herein of advantages and disadvantages of various features, embodiments, methods, and apparatus disclosed in other publications is in no way intended to limit the present invention. Indeed, certain features of the invention may be capable of overcoming certain disadvantages, while still retaining some or all of the features, embodiments, methods, and apparatus disclosed therein.  
     SUMMARY OF THE INVENTION  
      The present invention has been developed in view of the above-mentioned and/or other problems in the related art. The embodiments of the present invention significantly improve upon existing methods and/or apparatuses.  
      Among potential advantages, some embodiments provide a part mounting device easy in mounting/detaching operation and capable of assuredly mounting a part on a mounting portion without causing any rotation even if strong rotational force is applied.  
      According to one aspect of the present invention, a part mounting device is provided for mounting a part to a generally rectangular angular hole formed in a mounting portion. The device includes a main body having an elastic leg portion to be inserted in the angular hole and engaged with a pair of long sides of the angular hole and an insertion hole provided at least a non-bending side of the elastic leg portion. The device also includes a cap having an insertion ledge which is configured to contact at least the non-bending side of the elastic leg portion when inserted in the insertion hole, the insertion ledge being disposed in a clearance between the elastic leg portion and at least one short side of the angular hole in a state in which the elastic leg portion is engaged with a pair of long sides of the angular hole. The elastic leg portion is not engaged with the angular hole when the bending direction of the elastic leg portion is arranged in parallel to the long sides of the angular hole, and is engaged with the angular hole when the bending direction is arranged in parallel to the short sides of the angular hole.  
      Accordingly, in a state in which the insertion ledge of the cap is inserted in the insertion hole of the main body and the cap is attached to the main body, when the elastic leg portion of the main body and the insertion ledge of the cap are inserted into the angular hole with the bending direction of the elastic leg portion facing to the long sides of the angular hole, the elastic leg portions pass through the angular hole while being bent and engage with the inner periphery of the pair of long sides of the angular hole at the rear side thereof. Therefore, the part can be mounted on the mounting portion by one touch operation.  
      Also, since the insertion ledge is disposed in a clearance between the elastic leg portion and at least one of short side of the angular hole, and the insertion ledge is fitted to the corner portions of the angular hole, even if strong rotational force is applied to the part, the elastic leg portion and the insertion ledge are fitted in the angular hole and therefore the part would not rotate therein, and the elastic leg portion can be prevented from being pulled out from the angular hole due to the bending of the elastic leg portion.  
      Furthermore, when it is required to detach the mounting device, by pulling out the insertion ledge from the angular hole to detach the cap from the main body, a clearance is generated between the elastic leg portion and the short side of the angular hole. Therefore, by twisting the main body in this state, the engaging ledges of the elastic leg portion are rotated, so that the bending direction can be directed to the direction parallel to the long sides of the angular hole. Thereby, since the engagement of the elastic leg portion to the angular hole is released, the main body can be removed easily by pulling out the elastic leg portion from the angular hole.  
      According to this mounting device, since it is only required to form the angular hole having a rectangular shape in a mounting member, the cost reduction can be attained as compared with the case in which a mounting hole having a special shape as disclosed by the aforementioned Patent Document is formed.  
      According to a another aspect of the present invention, the insertion hole of the main body is provided at both non-bending sides of the elastic leg portion, and the cap is provided with a pair of generally parallel insertion ledges to be inserted in the pair of insertion holes. The insertion ledges are fitted in the insertion holes with the insertion ledges in contact with on both non-bending sides of the elastic leg portion and fitted to four corner portions of the angular hole. Therefore, the part can be secured without causing any displacements. In cases where the part is required to be detached, when the insertion ledges of the cap are pulled out from the angular hole to remove the cap from the main body, a clearance is generated at both non-bending sides of the elastic leg portion. Thus, the main body can be easily twisted so that the bending direction of the elastic leg portion becomes in parallel to the long side of the angular hole.  
      According to another aspect of the present invention, the elastic leg portion has a stem portion upwardly protruded from the main body, and an engaging ledge extended from a tip of the stem portion toward the main body in an anchor shaped manner, and the insertion ledge protrudes higher than the elastic leg portion when the cap is attached to the main body.  
      In this case, for example, because the insertion ledge protrudes higher than the elastic leg portion when the cap is attached to the main body, the elastic leg portion can be protected from an external impact, etc., thereby preventing breakage of the elastic leg portion, which in turn makes it possible to maintain the engaging force of the elastic leg portion to the angular hole.  
      According to another aspect of the present invention, the main body has a slit communicated with the insertion hole and penetrating the main body, the elastic leg portion has a stem portion including a pair of wall portions extended from opening edge portions of the slit via a clearance and connected at tip ends thereof, and engaging ledges protruded sideward from the stem portion, the cap has at least one insertion ledge to be inserted in the insertion hole of the main body, and a connection wall extended from the insertion ledge, the connection wall being to be inserted in the slit and a clearance between the wall portions of the stem portion, and an engaging portion for engaging the wall portions of the stem with the connection wall when the connection wall is inserted in the clearance of the wall portions of the stem portion is provided at an inner surface of the wall portion of the stem portion located at the clearance and the connection wall.  
      In this case, for example, when the cap is pushed into the main body until the insertion ledge of the cap is disposed at the non-bending side of the elastic leg portion with the insertion ledge of the cap in alignment with the insertion hole of the main body, the connection wall of the cap is inserted in the clearance of the wall portions of a stem portion through the slit of the main body. The cap can be attached to the main body by the engagement of the engaging portion formed between the wall portions of the stem portion and the connection wall.  
      When the elastic leg portion is inserted into the angular hole with the bending direction of the elastic leg portion facing to the long sides of the angular hole, the elastic leg portion passes through the angular hole and engages with the inner periphery of the pair of long sides of the angular hole at the rear side thereof. Thus, the part can be mounted to the mounting portion.  
      Moreover, when the part is required to be detached, by strongly pulling the cap away from the main body with a tool, etc., the engaging by the engaging portion can be released. Thus, the insertion ledge and the connection wall of the cap can be pulled out. When the cap is pulled out from the main body as mentioned above, a clearance is generated between the elastic leg portion and the angular hole, as mentioned above, In this state, by pulling out the elastic leg portion from the angular hole with the elastic leg portion facing to the short sides of the angular hole by rotating the main body, the part can be removed from the mounting portion.  
      For example, because the cap is prevented from being pulled out by the engaging portion formed between the connection wall of the cap and the wall portion of the stem portion by inserting the connection wall of the cap in the clearance of the wall portions of the stem portion, at the time of pulling out the cap to detach the part, the connection wall will be pulled out while being guided by the clearance of the wall portions and the slit of the stem portion. Consequently, even in situations where the cap is forcibly pulled out with large force using a tool T. etc., only a load in the engaging direction (i.e., the direction of pushing the cap into the main body, or the direction of pulling out the cap from the main body) is applied to the engaging portion. Therefore, possible damages to the engaging portion can be effectively prevented. Accordingly, the hook can be again mounted to the mounting portion, without requiring any exchange of the part.  
      According to another aspect of the present invention, the insertion holes of the main body are provided at both non-bending sides of the elastic leg portion, the slit connects the insertion holes in an H-shaped manner in cross-section, the slit penetrating the main body, and the cap has a pair of parallel insertion ledges to be inserted in the pair of insertion holes of the main body, and a connection wall which connects thee insertion ledges, the connection wall being inserted in the slit and the clearance between the wall portions of the stem portion.  
      Therefore, since the pair of insertion ledges provided to the cap are connected by the connection wall, the separation of the insertion ledges will not occur. Furthermore, when the insertion ledges are inserted in the insertion holes of the main body, the insertion ledges can be brought into contact with both non-bending sides of the elastic leg portion. Consequently, at the time of inserting the elastic leg portion and the insertion ledges in the angular hole, each insertion ledge can be prevented from getting stuck in the angular hole. Also, since each insertion ledge is hard to bend, the mounting strength of the part can be enhanced.  
      According to another aspect of the present invention, the engaging portion includes protruded portions formed on inner surfaces of the wall portions of the stem portion facing the clearance of the wall portions at a longitudinal intermediate portion of the clearance, and an engaging hole formed in the connection wall of the cap, whereby the protruded portions are engaged with the engaging hole when the connection wall of the cap is inserted in the clearance of the wall portions of the stem portion.  
      In this case, for example, when the connection wall of the cap is inserted in the clearance of the wall portions of the stem portion, the protruded portion formed on the inner surface of the wall portion of the stem portion located in the clearance of the wall portions engages with the engaging hole formed on the connection wall to thereby prevent the cap from being pulled out. Moreover, when the cap is strongly pulled with a tool, etc., the engagement between the protruded portion and the engaging hole will be released. Thus, the cap can be pulled out. In this case, for example, since the protruded portion is formed at the longitudinal intermediate of the clearance of the wall portions of the stem portion, the wall portions of the stem can be easily bent, resulting in an easy insertion and detachment of the cap.  
      According to another aspect of the present invention, the main body has a holding portion for holding a shaft portion of a sun visor.  
      In this case, for example, by fitting the shaft portion of the sun visor for automobiles in the holding portion, the shaft portion of the sun visor can be held by the ceiling wall portion as an mounting portion by one-touch operation.  
      According to another aspect of the present invention, the main body has a columnar portion with a diameter expanded tip portion, and a hook extended from a vicinity of the columnar portion, insertion holes for inserting the insertion ledges are formed at both sides of the columnar portion, a slit is formed so as to cross a central portion of the columnar portion, and the cap is inserted along an axis of the columnar portion and put on an end of the columnar portion.  
      In this case, for example, since the insertion ledge and the connection wall of the cap are inserted along the axis of the columnar portion, the insertion ledge and the connection wall are integrally connected to the columnar portion, resulting in a good appearance. A rope, a net, etc., for securing a load in a luggage compartment can be hooked on the columnar portion of the hook, and a shopping bag, etc., can be hung on the hook portion. With this device, since the insertion ledge is fitted in the angular hole, it is possible to mount the device so as not to rotate the hook.  
      In summary, according to some aspects of the present invention, after attaching the cap to the main body, by inserting the elastic leg portion of the main body and the insertion ledge of the cap into the angular hole with the bending direction of the elastic leg portion facing to the long sides of the angular hole, the elastic leg portion engages with the inner periphery of the pair of long sides at the rear side of the angular hole, and the insertion ledge of the cap is arranged in the clearance formed between the elastic leg portion and at least one short side of the angular hole with the insertion ledge fitted to the angle portion of the angular hole. Therefore, the device would not rotate even if strong rotational force is applied to the part, which assuredly prevents the elastic leg portions from being pulled out from the angular hole. Also, the mounting of the device can be performed by one-touch operation.  
      Also, if it is required to detach the part, by pulling out the insertion ledges of the cap from the angular hole to detach the cap from the main body, a clearance is generated between the elastic leg portion and at least one short side of the angular hole. Therefore, by turning the main body, so that the bending direction is directed to the direction parallel to the long sides of the angular hole, the engagement of the elastic leg portion to the angular hole is released. Therefore, the main body can be removed easily by pulling out the elastic leg portion from the angular hole.  
      The above and/or other aspects, features and/or advantages of various embodiments will be further appreciated in view of the following description in conjunction with the accompanying figures. Various embodiments can include and/or exclude different aspects, features and/or advantages where applicable. In addition, various embodiments can combine one or more aspect or feature of other embodiments where applicable. The descriptions of aspects, features and/or advantages of particular embodiments should not be construed as limiting other embodiments or the claims. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The preferred embodiments of the present invention are shown by way of example, and not limitation, in the accompanying figures, wherein:  
       FIG. 1  is an exploded perspective view showing an embodiment of the present invention applied to a mounting device for a sun visor holder;  
       FIG. 2  shows a main body constituting the sun visor holder, wherein  FIG. 2A  is a front view thereof,  FIG. 2B  is a right side view thereof,  FIG. 2C  is a top view thereof, and  FIG. 2D  is a bottom view thereof;  
       FIG. 3  shows a cap constituting the sun visor holder, wherein  FIG. 3A  is a front view thereof,  FIG. 3B  is a right side view thereof, and  FIG. 3C  is a bottom view thereof;  
       FIG. 4  is a perspective view showing the sun visor holder before mounting it to a ceiling wall portion;  
       FIG. 5  shows a state in which the sun visor holder is mounted to the ceiling wall portion, wherein  FIG. 5A  is a front view thereof, and  FIG. 5B  is a right side view thereof;  
       FIG. 6  is a plan view showing the state in which the sun visor holder is mounted on the ceiling wall portion;  
       FIG. 7  is an exploded perspective view of another embodiment in which the present invention is applied to a mounting device for a luggage compartment hook;  
       FIG. 8  shows a main body of the luggage compartment hook, wherein  FIG. 8A  is a front view thereof,  FIG. 8B  is a right side view thereof,  FIG. 8C  is a left side view thereof, and  FIG. 8D  is a top view thereof;  
       FIG. 9  is an enlarged cross-sectional view showing a principal portion of the main body of the luggage compartment hook;  
       FIG. 10  is a cap for the luggage compartment hook, wherein  FIG. 10A  is a front view thereof,  FIG. 10B  is a plan view thereof, and  FIG. 10C  is a left side view thereof;  
       FIG. 11  is a perspective rear side view of the state in which a cap is attached to the main body of the luggage compartment hook; and  
       FIG. 12  is a cross-sectional view showing the state in which the luggage compartment hook is mounted to the luggage compartment wall portion. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      In the following paragraphs, some embodiments of the invention will be described by way of example and not limitation. It should be understood based on this disclosure that various other modifications can be made by those in the art based on these illustrated embodiments.  
      Hereinafter, an embodiment of the part mounting device according to the present invention will be explained.  
      FIGS.  1  to  6  show one embodiment in which the present invention is applied to a mounting device for a sun visor holder. In this embodiment, as shown in  FIGS. 1 and 5 , a ceiling wall portion  1  located above a windshield of an automobile corresponds to an mounting portion as set forth in the present invention. The sun visor holder  10  as a part as set forth in the present invention is mounted on the ceiling wall portion  1 .  
      The ceiling wall portion  1  in this embodiment includes a panel member  2  and a trim member  3  attached to the lower surface of the panel member  2 . At the predetermined portion of the ceiling wall portion  1 , an angular hole  4  having a generally rectangular shape surrounded by long sides  5  and  5  and short sides  6  and  6  perpendicular to these long sides  5  and  5  is formed.  
      The sun visor holder  10 , which is a part as set forth in the present invention (hereinafter simply referred to as “holder  10 ”), includes a main body  30  which has an elastic leg portion  35  to be engaged with the angular hole  4 , and a cap  50  to be attached to the main body  30 , as main components.  
      Also referring to  FIG. 2 , the main body  30  is generally rectangular in shape, and has a base portion  31  which comes into contact with the trim member  3  of the ceiling wall portion  1 , and a holding portion  32  protruded from the lower surface of the base portion  31  into a C-shape in cross-section for detacheably holding a shaft portion  7  (see  FIG. 5 ) of the sun visor (not illustrated). In this embodiment, the holding portion  32  is formed into a C-shape for holding the Up end portion of the shaft portion  7  of the sun visor, but not limited to this. The holding portion  32  can be configured so as to rotatably hold the basal end of the shaft portion  7  of the sun visor. For example, it can be configured such that the basal end of the shaft portion of the sun visor has a spherical expanded portion and the holding portion is an adjustable joint having a spherical dented portion which can hold the spherical expanded portion in a pivotally movable manner.  
      The base portion  31  has a plurality of material saving dented portions  31   a  formed at the longitudinal one side of the upper surface (a surface which comes into contact with the trim member  3  of the ceiling wall portion  1 ) and an elastic leg portion  35  protruded via a pedestal portion  33  at the side opposite to the dented portions  31   a . This elastic leg portion  35  has a stem portion  36  which is a plate-shaped member having a wide width along the longitudinal direction of the base portion  31  and upwardly protruded from the pedestal portion  33 , and a pair of engaging ledges  37  and  37  extended in the shape of an anchor from the tip of the stem portion  36  toward the pedestal portion  33  and having the same width as that of the stem portion  36 . At the Up end portions of the engaging ledges  37  and  37 , engaging stepped portions  38  and  38  are formed, which will be served as engaging portions to be engaged with the long sides  5  and  5  of the angular hole  4  of the ceiling wall portion  1 . The engaging ledges  37  and  37  of the elastic leg portion  35  are configured so as to be inwardly bent with respect to the width direction of the main body  30  at the time of inserting them into the angular hole  4 . This direction will be defined as a bending direction A of the elastic leg portion  35  (see  FIG. 1 ).  
      The width of the elastic leg portion  35  in the bending direction A is set to be longer than the length W of the short side  6  of the angular hole  4 , but shorter than the length of the long side  5  thereof. Accordingly, when the bending direction A of the elastic leg portion  35  is aligned with a direction perpendicular to the long sides  5  and  5 , the elastic leg portion  35  can be engaged with the long sides  5  and  5  of the angular hole  4 . On the other hand, when the bending direction A of the elastic leg portion  35  is aligned with a direction parallel to the short sides  6  and  6 , the elastic leg portion  35  cannot be engaged with the angular hole  4 .  
      As best shown in  FIG. 2A , provided at the lower surface of the base portion  31  below the elastic leg portion  35  is a cap mounting portion  39  whose thickness increases from the tip end portion of the base portion  31  toward the basal end portion of the holding portion  32 . At both sides of this cap mounting portion  39 , a pair of guide grooves  40  and  40  are formed so as to extend in the thickness direction of the base portion  31  (see  FIGS. 2A and 2C ). At the upper part of each of the guide grooves  40  and  40 , an engaging stepped portion  41  is formed (see  FIG. 2A ). An engaging ledge  52  of the cap  50 , which will be mentioned later, is fitted in the guide groove  40 , and the hook portion  53  formed at the tip of the engaging ledge  52  engages with an engaging stepped portion  41 .  
      Moreover, a pair of insertion holes  34  and  34  are formed in the base portion  31  at the positions adjacent to the pedestal portion  33  on which the elastic leg portion  35  is formed and at both non-bending direction sides of the engaging ledges  37  and  37  of the elastic leg portion  35 , i.e., in this embodiment, at both sides of the elastic leg portion  35  perpendicular to the bending direction A of the elastic leg portion  35 .  
      The pair of insertion holes  34  and  34  are each formed to have approximately the same size as the size of the angular hole  4 . In detail, as shown in  FIG. 1 , the distance L between these insertion holes  34  and  34  is formed to have the same length of the long side  5  of the angular hole  4 , and the length W of each insertion hole  34  is formed to have the same length of the short side  6  of the angular hole  4 . In a state in which the engaging stepped portions  38  and  38  of the elastic leg portion  35  are engaged with generally the central portions of the respective long sides  5  and  5  of the angular hole  4 , a clearance C as shown in  FIGS. 5A and 6  is formed between each short side  6  of the angular hole  4  and the elastic leg portion  35 .  
      To the main body  30 , the cap  50  as shown in  FIGS. 3A  to  3 C is to be attached. This cap  50  has a bottom plate  51  having a shape which can fits on the cap mounting portion  39  of the main body  30 . From both width direction sides of the top surface (the surface which comes into contact with the cap mounting portion  39 ) of the bottom plate  51 , a pair of engaging ledges  52  and  52  to be fitted in the guide grooves  40  and  40  of the main body  30  are upwardly protruded. At the Up inner sides of the engaging ledges  52  and  52 , hook portions  53  and  53  are protruded in an opposed manner. The hook portion  53  has a tapered surface  53   a  which gradually decreases in thickness toward the Up end to secure the insertion operation of the engaging ledge  52 , and an engaging portion  53   b  to be engaged with the engaging stepped portion  41  formed in the guide groove  40 .  
      On the width direction center of the upper surface of the bottom plate  51 , a pair of insertion ledges  55  and  55  are upwardly protruded in parallel with each other at a distance capable of being inserted into the insertion holes  34  and  34  of the main body  30  with the same height. Moreover, each insertion ledge  55  has, at its width direction sides, outwardly protruded ribs  56  and  56 . Each rib  56  has a tapered surface  56   a  gradually decreased in height from the approximately half of the height toward the upper end, so that the insertion ledge  55  can be easily inserted into the insertion hole  34  of the main body  30 . Furthermore, at the outside upper ends of each rib  56 , tapered faces  56   b  are formed to facilitate the insertion of the insertion ledge  55  into the insertion hole  34  of a main body  30 . Furthermore, the distance between the insertion ledges  55  and  55  including the ribs  56  coincides with the distance L between the insertion holes  34  and  34 , and the width of each insertion ledge  55  coincides with the width W of the insertion hole  34 .  
      In this embodiment, the insertion ledge  55  is provided with ribs  56  at its both sides. The insertion ledge  55 , however, is not limited to this structure, and can be in any form so long as the insertion ledge  55  can be inserted into the insertion hole  34  and fitted to the short side  6  of the angular hole  4 .  
      The insertion ledges  55  and  55  are inserted into the insertion holes  34  and  34  at the time of attaching the cap  50  to the main body  30 . The insertion ledge  55  protruded from the insertion hole  34  of the main body  30  is inserted into and disposed in the clearance C formed between the short side  6  of the angular hole  4  and the elastic leg portion  35 . At this time, a total of four ribs  56  and  56  formed at both sides of each insertion ledge  55  contact with four corner portions of the angular hole  4 .  
      Furthermore, as shown in  FIGS. 4, 5A  and  5 B, in a state in which the cap  50  is attached to the main body  30 , the insertion ledges  55  and  55  protrude higher than the elastic leg portion  35 .  
      Next, a method of mounting the holder  10  to the ceiling wall portion  1  is explained.  
      As shown in  FIG. 1 , initially, the cap  50  is pushed against the main body  30  from the lower surface side of the main body  30  with the insertion ledges  55  and  55  of the cap  50  in alignment with the insertion holes  34  and  34 . As a result, the insertion ledges  55  and  55  are inserted in the insertion holes  34  and  34 . At the same time, the engaging ledges  52  and  52  also are inserted in the guide grooves  40  and  40  while the tapered surface  53   a  of the hook portion  53  is pressed and bent outwardly. As the cap  50  is further pushed against the main body  30 , the insertion ledges  55  and  55  protrude from the insertion holes  34  and  34 , and the hook portions  53  of the engaging ledges  52  reach the engaging stepped portions  41  and  41 . Thus, the engaging ledges  52  and  52  are engaged with the engaging stepped portions  41  and  41  by the elastic return. As a result, as shown in  FIG. 4 , the cap  50  is attached to the main body  30 . At this time, the insertion ledges  55  and  55  protruding from the insertion holes  34  and  34  of the main body  30  contact the non-bending sides of the elastic leg portion  35 .  
      As shown in  FIG. 4 , the broad surfaces of the engaging ledges  37  and  37  of the elastic leg portion  35  and the side portions of the insertion ledges  55  and  55  are arranged so as to face the long sides  5  of the angular hole  4  of the ceiling wall portion  1 . That is, in a state in which the bending direction A of the elastic leg portion  35  is adjusted so as to face the long sides  5  and  5  of the angular hole  4 , the elastic leg portion  35  of the holder  10  is inserted into the angular hole  4  from the front side of the ceiling wall portion  1  to which the trim member  3  is attached. Then, the engaging ledges  37  and  37  are pressed by the periphery of the long sides  5  and  5  of the angular hole  4  to be bent inwardly in the bending direction A. When the engaging stepped portions  38  and  38  reach the long sides  5  and  5  of the angular hole  4  of the panel member  2 , the engaging ledges  37  and  37  return elastically, causing an engagement of the engaging stepped portions  38  and  38  with the inner periphery of the long sides  5  and  5 . In this way, as shown in  FIG. 5A and 5B , the upper surface of the main body  30  is in contact with the trim member  3  located at the front surface of the ceiling wall portion  1 , and the elastic leg portion  35  is engaged with the panel member  2  located at the rear side of the ceiling wall portion  1 . Thus, the holder  10  can be fixedly mounted on the ceiling wall portion  1 . Thus, in a state in which the cap  50  is previously attached to the main body  30 , by pushing the holder  10  into the angular hole  4  in an aligned manner, the holder  10  can be mounted on the ceiling wall portion  1  through one-touch operation.  
      By fitting the shaft portion  7  of the sun visor in the holding portion  32  of the main body  30 , as shown in  FIGS. 5A and 5B , the shaft portion  7  of the sun visor can be held by the ceiling wall portion  1 , which is a mounting portion, through one-touch operation.  
      In a state in which the holder  10  is held by the ceiling wall portion  1  as mentioned above, the insertion ledges  55  and  55  of the cap  50  are disposed in the clearances C formed between the elastic leg portions  35  and  35  and the short sides  6  of the angular hole  4 , and the insertion ledges  55  are fitted to the corner portions of the angular hole  4  (see  FIG. 5A  and  FIG. 6 ). Therefore, even if a strong rotational force is applied to the holder  10 , since the elastic leg portion  35  and the insertion ledges  55  and  55  are fitted in the angular hole  4 , the holder  10  will not rotate. Thus, it becomes possible to prevent the bending of the elastic leg portion  35  and the detaching of the elastic leg portion  35  from the angular hole  4 .  
      Furthermore, when it is required to detach the holder  10  from the ceiling wall portion  1 , the cap  50  can be detached from the main body  30  by releasing the engagement of the hook portions  53  and  53  of the engaging ledges  52  and  52  of the cap  50 , pulling out the engaging ledges  52  and  52  from the guide grooves  40  and  40 , and pulling out the insertion ledges  55  and  55  from the angular hole  4 . Consequently, clearances C will be generated between the elastic leg portions  35  and the short sides  6  and  6  of the angular hole  4 . In this state, by rotating the main body  30 , the engaging ledges  37  and  37  of the elastic leg portion  35  are rotated, so that the bending direction A can be aligned with a direction parallel to the long sides  5  and  5  of the angular hole  4 . Thereby, since the engagement of the elastic leg portion  35  with the angular hole  4  is released, the main body  30  can be removed easily by pulling out the elastic leg portion  35  from the angular hole  4 .  
      According to this mounting device, for example, since it is only required to form the angular hole  4  having a rectangular shape as shown in  FIG. 1  in the ceiling wall portion  1  of an automobile, the cost reduction can be attained as compared with the case in which the mounting hole having a special shape as disclosed by the aforementioned Patent Document is formed.  
      Moreover, in the aforementioned holder  10 , a pair of insertion holes  34  and  34  are formed at both non-bending sides of the elastic leg portion  35 , and a pair of insertion ledges  55  and  55  to be inserted in the insertion holes  34  and  34  are formed on the cap  50 . Thereby, as shown in  FIG. 6 , the pair of insertion ledges  55  and  55  come into contact with both the non-bending sides of the elastic leg portion  35 , and inserted in the angular hole  4  so as to be fitted to the four corner portions of the angular hole  4 . As a result, the holder  10  can be firmly fixed to the angular hole  4  without causing any play therebetween. When the cap  50  is removed from the main body  30  by pulling out the insertion ledges  55  and  55  from the angular hole  4 , clearances C will be generated at both the non-bending sides of the elastic leg portion  35 . This allows an easy rotation of the main body  30  so that the bending direction A of the elastic leg portion  35  becomes parallel to the long sides  5  of the angular hole  4 , resulting in an easy detachment of the holder  10  from the ceiling wall portion  1 .  
      Furthermore, in the fixed state of the holder  10 , since a total of four ribs  56  provided at both sides of each insertion ledge  55  of the cap  50  locally come into contact with four corner portions of the angular hole  4 , even if very strong rotational force is applied to the holder  10 , the holder  10  can be stably secured.  
      Moreover, in the aforementioned mounting device, as shown in  FIG. 4  and  FIGS. 5A and 5B , it is constituted such that the insertion ledges  55  and  55  protrude higher than the elastic leg portion  35  when the cap  50  is attached to the main body  30 . Therefore, the elastic leg portion  35  can be effectively protected from an external impact, etc., which in turn can prevent the breakage of the elastic leg portion  35 , etc. Thus, the engaging force of the elastic leg portion  35  to the angular hole  4  can be better maintained.  
      The end portion of the base portion  31  of the main body  30  and the end portion of the bottom plate  51  of the cap  50  can be integrally formed such that the main body  30  and the cap  50  are connected via a think hinge portion, etc., whereby the insertion ledges  55  and  55  can be inserted into the insertion holes  34  and  34  by pivotally moving the cap  50  relative to the main body  30 .  
      FIGS.  7  to  12  show another embodiment in which the present invention is applied to a mounting device for a luggage compartment hook. In the following explanation, the explanation of the portions substantially the same as those of the aforementioned first embodiment will be omitted by allotting the same reference numeral.  
      This luggage compartment hook  10   a  is equipped with a main body  70  and a cap  90  to be attached to the main body  70 . This luggage compartment hook  10   a  corresponds to a part as set forth in the present invention.  
      In this embodiment, the luggage compartment wall portion  8  vertically extended from the bottom surface of the load space located behind a rear seat of an automobile corresponds to a mounting portion as set forth in the present invention. It is configured such that the luggage compartment hook  10   a  (hereinafter simply referred to as “hook  10   a ”) is mounted on the luggage compartment wall portion  8 . This hook  10   a  can be used to hook a rope, a net, etc., for securing a load disposed in a luggage compartment or to hang a shopping bag, etc.  
      The luggage compartment wall portion  8  is provided with a rectangular shaped angular hole  4  similar to the aforementioned embodiment with the long sides  5  and  5  arranged in parallel to the bottom surface of the luggage compartment (not illustrated). Furthermore, a positioning hole  9  is formed below the center of the long side  5  of the angular hole  4  at a certain distance. In this positioning hole  9 , a positioning pin  72  of the main body  70 , which will be mentioned later, is inserted to attain the positioning of the hook  10   a.    
      The main body  70  of the hook  10   a  is explained with reference to FIGS.  7  to  9 . The main body  70  is a long plate extended in one direction, and has a base portion  71  which comes into contact with the luggage compartment wall portion  8 . The longitudinal one end portion of the base portion  71  is formed into a circular shape slightly enlarged in diameter, and an elastic leg portion  35   a  is protruded from the contacting surface of the enlarged circular portion so that the bending direction A is in parallel to the longitudinal direction of the base portion  71 . Furthermore, a positioning pin  72  to be inserted into the positioning hole  9  is protruded from the contacting surface of the base portion  71  which comes into contact with the luggage compartment wall portion  8  at a portion near the other longitudinal end portion of the base portion  71  (see  FIG. 8A ). Furthermore, from the other longitudinal end of the base portion  71 , a hook portion  73  having a generally J-shape as seen from the side is protruded. To this hook portion  73 , a handle portion of a shopping bag, etc., are hooked to thereby hang a shopping bag, etc. The hook portion  73  is not limited to a J-shaped hook portion, and can be in any form, such as, e.g., an L-shaped hook portion, or a hook extended obliquely upwardly from the end portion of the base portion  71 , but not limited to them.  
      On the other hand, at the circular enlarged portion of the base portion  71 , a cylindrical columnar portion  75  protrudes from the surface opposite to the surface from which the elastic leg portion  35   a  protrudes. Furthermore, the columnar portion  75  includes, at its tip end peripheral portion, an annular diameter expanded portion  76 . Therefore, it is possible to hook a load-securing rope, net, etc., equipped in the luggage compartment, etc. At the tip end peripheral surface of the columnar portion  75 , a circular dented portion  77  with a prescribed depth is formed, so that a cover plate  91  of the cap  90 , which will be mentioned later, can be fitted therein. Furthermore, at the one upper part of the dented portion  77 , a cut-out portion  78  is formed so as to extend obliquely toward the bottom of the dented portion  77 . This cut-out portion  78  serves as an inserting portion for inserting a tool, such as, e.g., a minus driver, at the time of detaching the cap  90  from the main body  70  (see  FIG. 12 ).  
      As shown in  FIGS. 7 and 8 B, when the column portion  75  is viewed from the axial direction, a pair of insertion holes  34  and  34  are formed almost in parallel at both sides of the column portion  75 . Also, as shown in  FIG. 8C , the pair of insertion holes  34  and  34  penetrate the columnar portion  75  and the base portion  71  from the bottom of the dented portion  77  of the tip end periphery of the columnar portion  75 , and are located at both sides of a direction perpendicular to the bending direction A of the elastic leg portion  35   a.    
      Furthermore, between the pair of insertion holes  34  and  34 , a slit  79  connecting the insertion holes  34  and  34  is formed so as to extend in a direction perpendicular to them. More specifically, the slit  79  connects the pair of insertion holes  34  and  34  to form a substantially H-shape in cross-section when the columnar portion  75  and the base portion  74  are cut with a plane perpendicular to the axial direction and penetrates the columnar portion  75  and the base portion  71 . Moreover, as shown in  FIGS. 7 and 8 B, this slit  79  is formed so as to cross the central portion of the columnar portion  75 .  
      As shown in  FIG. 9 , this slit  79  has a first inner tapered surface  79   a  gradually decreased in diameter from the dented portion  77  of the columnar portion  75  toward the insertion direction of the cap  90 , an inner straight surface  79   b  with a constant length extended from the tapered surface  79   a , and a second inner tapered surface  79   c  gradually decreased in diameter from the straight surface  79   b  along the thickness direction of the base portion  71  and extended from the inner straight portion  79   b . The first inner tapered surface  79   a  facilitates the insertion of the connection wall  93  of the cap  90  mentioned later, and the second inner tapered surface  79   c  decreases the clearance between this second tapered surface  79   c  and the tapered surface  95   a  of the rib  95  formed on the connection wall  93 , which is mentioned later, to enhance the adhesiveness thereof. As shown in  FIG. 9 , above and below the slit  79  of the columnar portion  75 , material released holes  80  and  80  with a prescribed depth are formed along the axial direction to prevent the occurrence of sink, etc., at the time of the forming.  
      The elastic leg portion  35   a  is explained with reference to  FIG. 9 . This elastic leg portion  35   a  is provided at one end portion of the base portion  71  and protruded from the side opposite to the columnar portion  75  as mentioned above. This elastic leg portion  35   a  protrudes from the opposed side portions of the opening edge portion of the slit  79  with a clearance  81  communicating with the slit  79 , and has a stem portion  36   a  consisting of a pair of wall portions  82  and  82  connected at the tip end portions thereof. A connection wall  93  of the cap  90 , which is mentioned later, is inserted in between the pair of wall portions  82  and  82  of the stem portion  36   a . From the tip end both side portions of the stem portion  36   a , a pair of engaging ledges  37  and  37  extend into an anchor shape.  
      At the longitudinal middle portion of the clearance  81  on the inner surfaces of the pair of wall portions  82  and  82  of the stem portion  36   a , protruding portions  83  and  83  are provided in an opposed manner. The stepped portions  83   b  formed at the back side end portion of the clearance  81  of the protruded portion  83  are configured to engage with engaging holes  97  of the connection wall  93  of the cap  90  mentioned later. Moreover, each protruded portion  83  has a tapered surface  83   a  gradually decreased in height toward the base portion  71  to enhance the insertion of the connection wall  93 . In this embodiment, the protruded portion  83  is formed at each wall portion  82  of the stem portion  36   a , but can be formed at either one of them.  
      The cap  90  to be attached to the main body  70  mentioned above is explained with reference to  FIGS. 7 and 10 . This cap  90  has a cover plate  91  which can be fitted in the dented portion  77  of the columnar portion  75 . From the opposed peripheral edge portions of the rear surface side of this cover plate  91 , a pair of insertion ledges  55  and  55  to be inserted into the pair of insertion holes  34  and  34  of the main body  70  protrude in parallel with each other. Furthermore, as shown in  FIG. 10C , at the opposed external peripheral edge portions between the pair of insertion ledge  55  and  55  at the rear surface side of the cover plate  91 , obliquely cut grooved portions  92  and  92  with a predetermined width are formed to serve a minus driver insertion portion in combination with the cutout portion  78  of the main body  70  at the time of detaching the cap  90  from the main body  70  (see  FIG. 12 ). At both the width direction sides of the tip end portion of each insertion ledge  55 , a tapered surface  57  is formed, respectively (see  FIG. 10A ). Furthermore, at the outside surface of the longitudinal tip end portion of each insertion ledge  55 , a tapered surface  58  is formed (see  FIG. 10B ). Thus, the insertion operation of the insertion ledges  55  and  55  into the insertion holes  34  and  34  of the main body  70  can be enhanced.  
      The pair of insertion ledges  55  and  55  are connected by a connection wall  93  having a predetermined length formed at the width direction intermediate portion into a generally H-shape as viewed from the axial direction. As a result, the connection wall  93  can be inserted into the slit  79  connecting the pair of insertion holes  34  and  34  in an H-shape in cross-section. The tip both sides of the connection wall  93  are formed into tapered surfaces  93   a  and  93   a , for example, to enhance the insertion operation into the slit  79 . On both surfaces of the connection wall  93 , a plurality of ribs  95  with a predetermined length each extended in the longitudinal direction are formed at certain intervals. At the tip end portion of each rib  95 , a tapered surface  95   a  is formed. Thus, the height at the tip end side is decreased.  
      The connecting wall  93  is provided with an engaging hole  97  to be engaged with the protruded portions  83  of the stem portion  36   a  at the front side of the tip end of each rib  96  at a predetermined distance. As shown  FIG. 12 , both the thickness direction side portions of the tip end side edge of the engaging hole  97  are formed into tapered surfaces  97   a  and  97   a , respectively. The protruded portions  83  and  83  are engaged with these tapered surfaces  97   a  and  97   a . The aforementioned engaging hole  97  and protruded portions  83  and  83  are served as an engaging portion in this embodiment.  
      Next, the steps of mounting the hook  10   a  as a part to the luggage compartment wall portion  8  as an mounting portion is explained using the mounting device.  
      The cap  90  is pressed into the main body  70  until the insertion ledges  55  and  55  are positioned at both non-bending sides of the elastic leg portion  35   a  with the insertion ledges  55  and  55  of the cap  90  in alignment with the insertion holes  34  and  34  of the main body  70 . As a result, the connection wall  93  of the cap  90  is inserted into the clearance  81  between the pair of wall portions  82  and  82  of the stem portion  36   a  via the slit  79  of the main body  70 . As the cap  90  is further pushed, the tip end portion of the connection wall  93  presses the tapered surfaces  83   a  of the protruded portions  83  to bend the pair of wall portions  82  and  82  outwardly. When the engaging hole  97  reaches the stepped portions  83   b  of the protruded portions  83 , the stepped portions  83   b  of the protruded portions  83  and  83  engage with the tapered surfaces  97   a  and  97   a  formed at the tip end side edge of the engaging hole  97 . Thus, the cap  70  can be attached to the main body  70  in a pull-out prevented state as shown in  FIG. 11 .  
      Since the pair of insertion ledges  55  and  55  of the cap  90  are connected by the connection wall  93 , the separation of the insertion ledges  55  and  55  will not occur. Furthermore, when the insertion ledges  55  and  55  are inserted in the insertion holes  34  of the main body  70 , the insertion ledges  55  can be brought into contact with both non-bending sides of the elastic leg portion  35   a . Consequently, at the time of inserting the elastic leg portions  35   a  and  35   a  and the insertion ledges  55  and  55  in the angular hole  4 , each insertion ledge  55  can be prevented from getting stuck in the angular hole  4 . Furthermore, since each insertion ledge  55  is difficult to bend, the mounting strength of the hook  10   a  to the luggage compartment wall portion  8  as an mounting portion can be enhanced.  
      Furthermore, the connection wall  93  of the cap  90  is inserted into the slit  79  formed so as to cross the central portion of the columnar portion  75 , and the cover plate  91  of the cap  90  is fitted in the dented portion  77  of the columnar portion  75 . In this state, the cover plate  91  is almost flush with the Up end of the columnar portion  75 , and thus the end surface of the columnar portion  75  can be covered without protruding the cover plate  91  (see  FIG. 12 ). In this way, the insertion ledges  55  and  55  and the connection wall  93  of the cap  90  are integrally combined with the columnar portion  75  of the main body  70 , resulting in enhanced appearance.  
      After attaching the cap  90  to the main body  70  as mentioned above, the positioning pin  72  is inserted into the positioning hole  9  with the bending direction A of the elastic leg portion  35   a  facing to the long sides  5  and  5  of the angular hole  4 . As a result, in the same manner as in the first embodiment, the elastic leg portion  35   a  passes through the angular hole  4  while being bent, and then engages with the inner periphery of the pair of long sides  5  and  5  at the rear side of the angular hole  4 . Thus, the hook  10   a  is mounted on the luggage compartment wall portion  8  as an mounting portion.  
      On the other hand, in the case of detaching the hook  10   a  from the luggage compartment wall portion  8 , as shown in  FIG. 12 , a tool T, such as, e.g., a minus driver, is inserted in between the cut-out portion  78  of the main body  70  and the grooved portion  92  of the cap  90  from the obliquely upward direction. Then, the periphery of the cap cover  91  of the cap  90  is lifted up by moving the tip end portion of the tool T like a lever, and then the cap  91  is pulled upward so as to be detached from the main body  70 , to thereby disengage the engaging of the stepped portions  83   b  and  83   b  of the protruded portions  83  and the edges of the engaging hole  97 . Thus, each insertion ledge  55  and the connection wall  93  of the gap  90  can be pulled out. When the cap  90  is pulled out from the main body  70 , clearances are generated between the elastic leg portion  35   a  and the angular hole  4 . Thus, as mentioned above, the main body  70  is rotated so that the bending direction of the elastic leg portion  35   a  faces the short side  6  of the angular hole  4 , and then the elastic leg portion  35   a  is pulled out from the angular hole  4 . As a result, the hook  10   a  can be removed from the luggage compartment wall portion  8 .  
      At this time, in this embodiment, as shown in the enlarged cross-sectional view in  FIG. 12 , the protruded portions  83  and  83  are engaged with the tapered surfaces  97   a  of the engaging hole  97 , respectively. Therefore, at the time of pulling out the cap  90  from the main body  70 , each protruded portion  83  can be pressed smoothly to cause an easy outward bending of each wall portion  8 , resulting in an easy detachment of the cap  90  from the main body  70 .  
      As explained above, in this embodiment, it is configured such that the connection wall  93  of the cap  90  is inserted in the clearance  81  formed between the pair of wall portions  82  and  82  of the stem portion  36   a  to prevent the cap  90  from being pulled out by the engaging portion constituted by the protruded portions  83  formed between the pair of wall portions  82  and  82  and the engaging hole  97 . Therefore, at the time of pulling out the cap  90  to detach the hook  10   a , the connection wall  93  will be pulled out while being guided by the clearance  81  of the wall portions  82  and  82  of the stem portion  36   a  and the slit  79 . Consequently, even in cases where the cap  90  is forcibly pulled out with large force by inserting the tool T, such as, e.g., a minus driver, in between the cut-out portion  78  and the clearance  92 , only a load in the engaging direction (i.e., the direction of pushing the cap  90  into the main body  70 , or the direction of pulling out the cap  90  from the main body  70 ) is applied to the engaging portion constituted by the protruded portions  83  and  83  and the engaging hole  97 . Therefore, possible damages to the engaging portion can be prevented. Accordingly, the hook  10   a  can be again attached to the mounting portion, without requiring any exchange of the main body  70  and/or the cap  90 .  
      Furthermore, in this embodiment, since the protruded portion  83  is formed on each wall portion  82  of the stem portion  36   a  at the longitudinal middle portion in the clearance  81 , at the time of attaching or detaching the cap  90 , each wall portion  82  of the stem portion  36   a  can be elastically bent to facilitate the attachment and detachment of the cap  90 .  
      In this hook  10   a  mounted to the luggage compartment wall portion  8  as mentioned above, a rope, a net, etc., for securing a load in the luggage compartment can be hooked on the columnar portion  75 , and a shopping bag, etc., can be hung on the hook portion  73 , thereby improving the convenience.  
      In the aforementioned embodiment, a pair of insertion holes  34  and  34  are formed in the main body  70 , and the cap  90  is provided with a pair of insertion ledges  55  and  55  to be disposed at both sides of the elastic leg portions  35   a  and  35   a  via the insertion holes  34  and  34 . The present invention, however, allows the structure in which one insertion hole  34  and one insertion ledge  55  are formed and the insertion ledge is arranged only at one side of the elastic leg portion  35   a.    
      While the present invention may be embodied in many different forms, a number of illustrative embodiments are described herein with the understanding that the present disclosure is to be considered as providing examples of the principles of the invention and such examples are not intended to limit the invention to preferred embodiments described herein and/or illustrated herein.  
      While illustrative embodiments of the invention have been described herein, the present invention is not limited to the various preferred embodiments described herein, but includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of aspects across various embodiments), adaptations and/or alterations as would be appreciated by those in the art based on the present disclosure. The limitations in the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. For example, in the present disclosure, the term “preferably” is non-exclusive and means “preferably, but not limited to.” In this disclosure and during the prosecution of this application, means-plus-function or step-plus-function limitations will only be employed where for a specific claim limitation all of the following conditions are present in that limitation: a) “means for” or “step for” is expressly recited; b) a corresponding function is expressly recited; and c) structure, material or acts that support that structure are not recited. In this disclosure and during the prosecution of this application, the terminology “present invention” or “invention” may be used as a reference to one or more aspect within the present disclosure. The language present invention or invention should not be improperly interpreted as an identification of criticality, should not be improperly interpreted as applying across all aspects or embodiments (i.e., it should be understood that the present invention has a number of aspects and embodiments), and should not be improperly interpreted as limiting the scope of the application or claims. In this disclosure and during the prosecution of this application, the terminology “embodiment” can be used to describe any aspect, feature, process or step, any combination thereof, and/or any portion thereof, etc. In some examples, various embodiments may include overlapping features. In this disclosure and during the prosecution of this case, the following abbreviated terminology may be employed: “e.g.” which means “for example;” and “NB” which means “note well.”