Patent Publication Number: US-10774564-B2

Title: Door handle device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority from Japanese Patent Application Nos. 2015-149779 and 2015-149784, the disclosures of which are incorporated herein by reference in their entireties. 
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a door handle device for a vehicle. 
     Description of Related Art 
     A door handle device includes a handle grip which a user grips. The handle grip includes a pivotally-mounting portion on one end side thereof, which is pivotally supported on a base member, and an inserting portion on the other end side thereof, which is inserted into a guide hole formed in the base member. When the handle grip is manipulated so as to open a door, the inserting portion moves into the guide hole. Accordingly, a predetermined gap is formed between the inserting portion and a wall of the guide hole so as to enable the movement of the inserting portion in the guide hole. This gap causes rattling which is fine movement of the handle grip in a direction along an axis of rotation. 
     JP-A-2007-32257 (patent document 1) discloses a door handle device where a guide member with which an inserting portion of a handle grip is brought into slide contact is disposed in a guide hole formed in a base member. By restricting the movement of the inserting portion of the handle grip along an axis of rotation by the guide member, rattling of the handle grip with respect to the base member is prevented. 
     SUMMARY OF THE INVENTION 
     However, in the door handle device disclosed in patent document 1, it is necessary to form a fixing portion on the base member for fixing the guide member. Accordingly, it is necessary to newly provide a mold for forming the base member and hence, a manufacturing cost is pushed up. To describe the situation in more detail, in the door handle device, in changing a design of a handle grip, there may be a case where an existing product is reused for the base member. However, when the structure disclosed in patent document 1 is newly adopted, it is also necessary to change a design of the base member. 
     The present invention has been accomplished in view of the above circumstances, and it is an object of the present invention to provide a door handle device which can prevent rattling of the handle grip using an existing base member. 
     In order to solve the problem mentioned above, the present invention provides a door handle device including: 
     a base member having a first shaft portion or a first bearing portion formed on one end side thereof, and having a guide hole which has a restricting portion projecting into an inner space formed on the other end side thereof; 
     a handle grip having a second bearing portion or a second shaft portion which provides a rotatably mounting state for the handle grip between the first shaft portion or the first bearing portion and the second shaft portion or the second bearing portion formed on one end side thereof, and having an inserting portion advanceable into and retractable from the guide hole formed on the other end side thereof; and 
     a slide guide mounted on the handle grip, and having a slide contact portion which is brought into slide contact with the restricting portion. 
     In the door handle device, by mounting the slide guide having the slide contact portion which is brought into slide contact with the restricting portion of the base member on the inserting portion of the handle grip, rattling of the handle grip with respect to the base member can be prevented. Rattling of the handle grip can be prevented by merely mounting the slide guide on the existing handle grip and hence, a change in design of the base member becomes unnecessary whereby a design of the handle grip can be changed while a manufacturing cost is held down. 
     One of the inserting portion and the slide guide of the handle grip has a fixing convex portion, and the other one has a fixing concave portion into which the fixing convex portion is press-fitted, 
     a mounting direction along which the second bearing portion or the second shaft portion of the handle grip is mounted on the first shaft portion or the first bearing portion of the base member is the direction which intersects with the advancing and retracting direction of the inserting portion into and from the guide hole, and 
     a press-fitting direction of the fixing convex portion into the fixing concave portion intersects with the mounting direction. 
     With such a configuration, even when the slide guide mounted on the handle grip is brought into contact with the base member at the time of mounting the handle grip on the base member, the direction of a force which acts on the base member in this case intersects with the press-fitting direction of the fixing convex portion along which the fixing convex portion is press-fitting into the fixing concave portion and hence, the removal of the slide guide from the handle grip can be prevented. 
     The slide guide includes: a pair of side frames respectively disposed along a projecting direction of the inserting portion; and a connecting portion which connects the pair of side frames to each other, and the side frame has one of the fixing convex portion and the fixing concave portion. 
     With such a configuration, the slide guide is formed of a single body formed by connecting the pair of side frames to each other by the connecting portion and hence, a part management is facilitated. Further, the slide guide can be integrally formed by molding and hence, a manufacturing cost can be lowered. 
     The connecting portion has an extending and shrinking portion. 
     With such a configuration, in the slide guide, a distance between the pair of side frames can be changed freely. Accordingly, enhancement of mounting operability can be achieved including ensuring a space which allows press-fitting of the fixing convex portion into the fixing concave portion at the time of mounting the slide guide on the inserting portion of the handle grip. 
     The inserting portion of the handle grip includes a positioning convex portion extending along a projecting direction of the inserting portion, the positioning convex portion being formed into a rectangular shape in cross section and having a first side surface and a second side surface, and 
     the side frame of the slide guide has a first positioning portion which is brought into contact with the first side surface of the positioning convex portion on one end side, and a second positioning portion which is brought into contact with the second side surface of the first positioning convex portion on the other end side. 
     With such a configuration, by bringing the first positioning portion and the second positioning portion of the slide guide into contact with both side surfaces of the positioning convex portion of the handle grip, the mounting state of the slide guide can be made stable. Accordingly, even when an external force is applied to the slide guide, the positional displacement or the removal of the slide guide from the handle grip can be suppressed. 
     The handle grip is rotatable about the shaft portion between a non-manipulation position where the handle grip extends along the base member and a manipulation position where the handle grip is away from the base member, and 
     the slide contact portion of the slide guide is elastically brought into contact with the restricting portion when the handle grip is at the non-manipulation position, and the slide contact portion of the slide guide is brought into a non-contact state with the restricting portion as the handle grip is rotated to the manipulation position. 
     With such a configuration, rattling of the handle grip positioned at the non-manipulation position can be prevented. Further, when the handle grip is in a manipulated state, the slide contact portion of the slide guide is not in contact with the restricting portion of the base member. Accordingly, slide resistance which the slide guide receives from the base member can be reduced and hence, there is no possibility that manipulability of the handle grip is impaired. 
     The base member and the handle grip are disposed such that an axis of the shaft portion extends along a vertical direction, and 
     the slide contact portion is capable of being elastically brought into pressure contact only with an upper side of the inserting portion of the handle grip. 
     With such a configuration, when the handle grip is at the non-manipulation position, the slide contact portion which is mounted only on an upper side of the inserting portion is elastically brought into pressure contact with the restricting portion of the base member. Accordingly, the inserting portion of the handle grip is biased downward so that a lower side of the inserting portion is brought into contact with the restricting portion of the base member. Usually, a user grips the handle grip from above and hence, a downward load is applied to the handle grip. In such an operation, there is no gap below the inserting portion of the handle grip and hence, the handle grip is maintained in a state where the position of the handle grip is restricted by the restricting portion. Accordingly, there is no possibility that the user who grips the handle grip has a sensation of rattling. Further, even when the user moves the handle grip in an upper direction in such a state, the slide contact portion having elasticity is brought into contact with the restricting portion of the base member and hence, rattling can be suppressed. 
     The slide guide includes a pair of side frames disposed on both sides of the inserting portion, and a connecting portion which connects the pair of side frames to each other, and 
     the side frame has the contact portion, and the slide contact portion which projects from the contact portion. 
     With such a configuration, assuming that the handle grip is at the manipulation position, even when a load is applied to the handle grip in a direction along an axis of rotation, the contact portion is brought into contact with the restricting portion and hence, breakage of the bearing portion can be prevented. Further, the inclination of the handle grip in the direction toward the axis of rotation of the handle grip can be suppressed. Further, the contact portion is brought into slide contact with the restricting portion at the time of manipulating the handle grip and hence, the handle grip can be guided to the manipulation position with certainty. Further, the slide contact portion which is brought into contact with the restricting portion at the non-manipulation position and the contact portion which is brought into contact with the restricting portion at the manipulation position are formed by integral molding as slide guides disposed on the inserting portion body of the handle grip and hence, the number of parts for forming the handle grip can be reduced. 
     The slide guide is made of a material which exhibits lower slide resistance against the restricting portion than the inserting portion exhibits. 
     With such a configuration, slide resistance at the time of manipulating the handle grip can be reduced and hence, the manipulability of the handle grip can be enhanced with certainty. 
     A manipulating portion which is configured to engage with a lever member rotatably and pivotally supported by the base member and to manipulate the lever member is mounted on the inserting portion of the handle grip, and 
     a cover portion which covers the manipulating portion is integrally formed with the slide guide. 
     With such a configuration, the door handle device includes the cover portion which covers the manipulating portion of the inserting portion body of the handle grip and hence, wear on the lever member can be suppressed. Further, the cover portion is integrally formed with the slide guide and hence, it is possible to prevent the increase of the number of parts and the increase of a manufacturing cost. 
     According to the door handle device of the present invention, the slide guide having the slide contact portion which is brought into slide contact with the restricting portion of the base member is disposed in the inserting portion of the handle grip. Accordingly, rattling of the handle grip with respect to the base member can be prevented. Further, an existing base member can be reused without making any change in design and hence, the increase of a manufacturing cost can be held in check at the time of changing a design of the handle grip. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The foregoing and the other feature of the present invention will become apparent from the following description and drawings of an illustrative embodiment of the invention in which: 
         FIG. 1  is a front view of a door handle device; 
         FIG. 2A  is a cross-sectional view taken along a line II-II in  FIG. 1 ; 
         FIG. 2B  is a cross-sectional view showing a state where a handle grip is manipulated so as to open a door; 
         FIG. 3  is a cross-sectional view taken along a line in  FIG. 1 ; 
         FIG. 4A  is an exploded perspective view of the door handle device; 
         FIG. 4B  is an exploded perspective view of the door handle device shown in  FIG. 4A  excluding a handle cover as viewed from a side opposite to a side from which the handle device is viewed in  FIG. 4A ; 
         FIG. 5  is a front view of a base member; 
         FIG. 6  is a perspective view of the handle grip; 
         FIG. 7A  is a cross-sectional view showing a state where the handle grip is at a non-manipulation position; 
         FIG. 7B  is a partially enlarged cross-sectional view of the handle grip shown in  FIG. 7A ; 
         FIG. 8A  is a cross-sectional view showing a state of the handle grip in a manipulation step; 
         FIG. 8B  is a partially enlarged cross-sectional view of the handle grip shown in  FIG. 8A ; 
         FIG. 9A  is a cross-sectional view showing a state where the handle grip is at a manipulation position; 
         FIG. 9B  is a partially enlarged cross-sectional view of the handle grip shown in  FIG. 9A ; 
         FIG. 10A  is an exploded perspective view showing a state where an inserting portion and a slide guide of the handle grip are disassembled; 
         FIG. 10B  is an exploded perspective view showing the state where the inserting portion and the slide guide of the handle grip are disassembled from a viewing angle different from a viewing angle of  FIG. 10A ; 
         FIG. 11A  is a plan view of the inserting portion of the handle grip; 
         FIG. 11B  is a bottom view of the inserting portion of the handle grip; 
         FIG. 12A  is a perspective view of the slide guide; 
         FIG. 12B  is a perspective view of the slide guide as viewed from a direction different from a direction along which the slide guide is viewed in  FIG. 12A ; 
         FIG. 13A  is a front view of the slide guide; 
         FIG. 13B  is a back view of the slide guide; 
         FIG. 14A  is a cross-sectional view of the slide guide; 
         FIG. 14B  is a cross-sectional view of the slide guide as viewed from a different direction from a direction along which the slide guide is viewed in  FIG. 14A ; 
         FIG. 15A  is a perspective view showing a first step of mounting the slide guide on the inserting portion; 
         FIG. 15B  is a perspective view showing a second step of mounting the slide guide on the inserting portion; 
         FIG. 15C  is a perspective view showing a third step of mounting the slide guide on the inserting portion; 
         FIG. 16A  is a cross-sectional view showing a state shown in  FIG. 15B ; 
         FIG. 16B  is a cross-sectional view showing a state where the slide guide is mounted on the inserting portion; and 
         FIG. 17  is a cross-sectional view showing a modification of a door handle device. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Hereinafter, an embodiment of the present invention is described with reference to drawings. 
     (Overall Configuration) 
       FIG. 1  to  FIG. 3  show a door handle device  10  for a vehicle according to the embodiment of the present invention. The door handle device  10  includes: a base member  15  disposed on a door panel  1  shown in  FIG. 2A ; a lever member  30  rotatably disposed on an upper portion of the base member  15  on a cabin side; and a handle grip  40  rotatably disposed on the base member  15  outside the vehicle. As shown in  FIG. 2B , in the door handle device  10 , when the handle grip  40  is manipulated in the vehicle-outside direction Z so as to open a door, the lever member  30  is rotated as shown in  FIG. 3 . With such an operation, a latch mechanism not shown in the drawing which is disposed in the inside of the door is operated by way of a rod  36  shown in  FIG. 1  so that the door is opened. 
     (Detailed Description of Door Panel) 
     As shown in  FIG. 2A , the door panel  1  forms an outer surface of the door. As shown in  FIG. 2A , a first opening portion  2  and a second opening portion  3  are formed in the door panel  1  with a predetermined distance therebetween in the longitudinal direction of the door which corresponds to the X direction in  FIG. 2A . An arm portion  45  disposed on one end side of the handle grip  40  is inserted into the first opening portion  2  positioned on a right side in  FIG. 2A  from outside the vehicle. An inserting portion  48  disposed on the other end side of the handle grip  40  is inserted into the second opening portion  3  positioned on a left side in  FIG. 2A  from outside the vehicle. A curved portion  4  which is recessed in the cabin side direction Z is formed on the door panel  1  between the first opening portion  2  and the second opening portion  3 . 
     (Detailed Description of Base Member) 
     To describe the configuration also with reference to  FIG. 4A  to  FIG. 5 , the base member  15  has a curved surface which conforms to the curved portion  4  of the door panel  1 , and is disposed on the cabin side of the door panel  1 . A first screw hole  16  is formed in the base member  15  such that the first screw hole  16  is positioned on the left side of the first opening portion  2 . A second screw hole  17  is formed in the base member  15  such that the second screw hole  17  is positioned on the left side of the second opening portion  3 . As most clearly shown in  FIG. 2A , a screw is made to pass through the first screw hole  16 , and is threaded into a screw stopper  5  of the door panel  1  so that the base member  15  is fixed to the door panel  1 . Further, a screw is made to pass through the second screw hole  17 , and is threaded into a boss  28  of an end cover  27  disposed outside the vehicle of the door panel  1  so that the door panel  1  is fixed in a state where the door panel  1  is sandwiched between the base member  15  and the end cover  27 . 
     In the base member  15 , an arm mounting hole  18  which communicates with the first opening portion  2  and in which the arm portion  45  of the handle grip  40  is disposed is formed. The arm mounting hole  18  is defined by walls of the base member  15 . Shaft portions  19  on which the handle grip  40  is rotatably mounted are formed on the base member  15  such that the shaft portions  19  project into the inside of the arm mounting hole  18  from a wall of the base member  15  disposed on the right side in  FIG. 2A . As most clearly shown in  FIG. 5 , the shaft portions  19 ,  19  which form a pair are formed on the base member  15  with a predetermined distance therebetween such that the shaft portions  19 ,  19  project from the wall of the base member  15  disposed on a right side in  FIG. 5 . The base member  15  is disposed on the door panel  1  such that an axis of rotation (axis) L of the shaft portions  19  (handle grip  40 ) extends in the vertical direction Y of the door in  FIG. 5 . A biasing spring  29  which suppresses rattling of the handle grip  40  in the longitudinal direction X is disposed on the shaft portions  19 . 
     A guide hole  20  is also formed in the base member  15  such that the guide hole  20  is positioned at an end portion of the base member  15  on a side opposite to the shaft portion  19 . The guide hole  20  communicates with the second opening portion  3 , and the inserting portion  48  of the handle grip  40  is disposed in the guide hole  20 . The guide hole  20  is defined by an upper wall  21   a , a lower wall  21   b , and a pair of lateral walls  21   c ,  21   d . The guide hole  20  extends along the vehicle inside-and-outside direction Z, and penetrates the base member  15 . To describe the configuration also with reference to  FIG. 7A , the restricting portions  22 A,  22 B which restrict the movement of the inserting portion  48  of the handle grip  40  in the vertical direction along the axis of rotation L are formed on a shaft portion  19  side of the guide hole  20 . The restricting portions  22 A,  22 B respectively project from vehicle-outside end portions of the upper wall  21   a  and the lower wall  21   b  of the guide hole  20  in the vertical direction Y such that the restricting portions  22 A,  22 B opposedly face each other. A recessed portion  22   a  for fixing a handle seat not shown in the drawing is respectively formed on a surface of the restricting portion  22 A on the vehicle-outside side and on a surface of the restricting portion  22 B on the vehicle-outside side. 
     As most clearly shown in  FIG. 5 , the guide hole  20  is divided into an insertion allowing portion  23  having no projecting restricting portions  22 A,  22 B, and a guide portion  24  having the projecting restricting portions  22 A,  22 B. The insertion allowing portion  23  is disposed adjacently to the guide portion  24  on a side opposite to the shaft portions  19 . In the insertion allowing portion  23 , a groove width in the vertical direction Y of the groove defined by the upper wall  21   a  and the lower wall  21   b  is H 1 , and the groove width H 1  is larger than a maximum size of the inserting portion  48  of the handle grip  40  in the vertical direction Y. A groove width in the vertical direction Y of a portion of the guide portion  24  where the restricting portions  22 A,  22 B are formed is H 2 , and the groove width H 2  is smaller than the maximum size of the inserting portion  48  in the vertical direction Y. The groove width of the guide portion  24  on the cabin side is equal to the groove width H 1  of the insertion allowing portion  23 . The inserting portion  48  of the handle grip  40  is disposed in the insertion allowing portion  23  of the guide hole  20  by insertion initially and, thereafter, the handle grip  40  can be slid into the shaft portion  19  side (in the mounting direction) so that the inserting portion  48  is disposed in the guide portion  24 . 
     (Detailed Description of Lever Member) 
     As shown in  FIG. 3 , the lever member  30  includes a rotary shaft  31  which projects along the longitudinal direction X of the door, and is rotatably mounted on a bearing  25  of the base member  15  (see  FIG. 4A ). A return spring (biasing member)  35  which biases the lever member  30  to a non-manipulation position shown in  FIG. 3  is disposed on the rotary shaft  31 . A manipulation receiving portion  32  which projects into the guide hole  20  is formed on a lower portion of the lever member  30 . A rod connection hole  33  which allows the rod  36  to be rotatably connected to the lever member  30  is formed in an upper portion of the lever member  30 . 
     When the manipulation receiving portion  32  of the lever member  30  receives the manipulation of the handle grip  40  so as to open a door, the lever member  30  is rotated in the counterclockwise direction in  FIG. 3  against a biasing force of the return spring  35 . With such a rotation, an opening operation of the latch mechanism is performed by way of the rod  36 . When the manipulation of the handle grip  40  so as to open a door is stopped, the lever member  30  is rotated to the non-manipulation position by a biasing force of the return spring  35 . With such an operation, the handle grip  40  is biased to the non-manipulation position by way of the lever member  30 . 
     (Detailed Description of Handle Grip) 
     To describe the configuration with reference to  FIG. 2A  to  FIG. 4B  together with  FIG. 6 , the handle grip  40  is disposed outside the vehicle with respect to the base member  15  with the door panel  1  interposed between the handle grip  40  and the base member  15 . In this embodiment, in the handle grip  40 , by mounting a slide guide  60  which is formed as a separate body on an inserting portion body  50  disposed in the guide hole  20  formed in the base member  15 , rattling of the handle grip  40  with respect to the base member  15  is suppressed and manipulability is also enhanced. 
     As most clearly shown in  FIG. 4A , the handle grip  40  includes: a grip body  42  which is mounted along the base member  15 ; and a handle cover  43  which covers a surface of the grip body  42  on the vehicle-outside side. An antenna (not shown in the drawing) for receiving operation signals from a remote controller is disposed in an inner space formed between the grip body  42  and the handle cover  43 . The handle grip  40  is mounted on the base member  15  after the antenna and the handle cover  43  are mounted on the grip body  42 . 
     One end of the handle grip  40  is positioned in the arm mounting hole  18  formed in the base member  15  through the first opening portion  2  of the door panel  1 , and the other end of the handle grip  40  is positioned in the guide hole  20  formed in the base member  15  through the second opening portion  3  of the door panel  1 . The handle grip  40  is rotatably disposed with respect to the base member  15  such that the handle grip  40  is rotatable between the non-manipulation position shown in  FIG. 2A  which the handle grip  40  takes before the handle grip  40  is manipulated and a manipulation position shown in  FIG. 2B  which the handle grip  40  takes after the handle grip  40  is manipulated. The handle grip  40  disposed at the non-manipulation position is positioned with a predetermined gap interposed between the handle grip  40  and the curved portion  4  of the door panel  1 . 
     The grip body  42  includes an approximately L-shaped arm portion  45  disposed in the arm mounting hole  18  through the first opening portion  2 . On both surfaces in the vertical direction Y of a distal end of the arm portion  45 , bearing portions  46 ,  46  which support the shaft portions  19 ,  19  of the base member  15  are formed. To describe the configuration with reference to  FIG. 4A  and  FIG. 4B , each bearing portion  46  is formed of a recessed groove which is recessed in an approximately semi-circular elongated shape, and a distal end of each bearing portion  46  on a shaft portion  19  side in the longitudinal direction X is opened. A splitting slit  47  extending along an XZ plane is formed in the arm portion  45 . With the formation of such a splitting slit  47 , split members formed by splitting the arm portion  45  in two are elastically movable in the directions along which the split members approach each other. 
     In mounting the handle grip  40  on the base member  15 , the arm portion  45  is inserted into the arm mounting hole  18  formed in the base member  15  through the first opening portion  2  of the door panel  1 . Thereafter, the handle grip  40  is slid to the right side in  FIG. 2A  along the longitudinal direction X (mounting direction) so that the shaft portions  19  of the base member  15  are inserted into the bearing portions  46 . With such operations, the handle grip  40  can be rotatably mounted on the base member  15  with the door panel  1  interposed between the handle grip  40  and the base member  15 . 
     As shown in  FIG. 2A  and  FIG. 2B , the grip body  42  includes the inserting portion  48  which projects toward the cabin side of the door panel  1  through the second opening portion  3 , and is disposed in the guide hole  20  formed in the base member  15  in an advanceable and retractable manner. To describe the configuration with reference to  FIG. 4A  and  FIG. 4B  together with  FIG. 6 , the inserting portion  48  includes: an inserting portion body  50  integrally formed with the grip body  42 ; and a slide guide  60  disposed so as to cover the inserting portion body  50 . A slide contact portion  68  which is brought into slide contact with the restricting portion  22 A of the base member  15  is formed on the slide guide  60 . With the formation of the slide contact portion  68 , as shown in  FIG. 7A  to  FIG. 9B , rattling of the handle grip  40  with respect to the base member  15  is suppressed, and manipulability of the handle grip  40  is enhanced. 
     (Detailed Description of Inserting Portion Body) 
     As shown in  FIG. 2A  and  FIG. 2B , the inserting portion body  50  is formed with a size which allows a distal end of the inserting portion body  50  to be positioned in the guide hole  20  whichever of the two positions, the non-manipulation position or the manipulation position the handle grip  40  takes. To describe the configuration also with reference to  FIG. 3 , a manipulating portion  51  which engages with the manipulation receiving portion  32  and manipulates the lever member  30  is formed on a distal end of the inserting portion body  50 . The manipulating portion  51  projects toward the shaft portions  19  along the longitudinal direction X. The projecting direction of the manipulating portion  51  is equal to the mounting direction of the handle grip  40  along which the handle grip  40  is mounted on the base member  15 . A cut-away portion  52  is formed on the inserting portion body  50 , and the manipulation receiving portion  32  of the lever member  30  which engages with the manipulating portion  51  is operably disposed in the cut-away portion  52 . The cut-away portion  52  is formed on the inserting portion body  50  such that the cut-away portion  52  is recessed from a bearing portion  46  side of the inserting portion body  50  in a direction opposite to the bearing portion  46 . 
     As shown in  FIG. 10A  to  FIG. 11B , fixing convex portions (fixing portions)  53   a  to  53   d  for fixing the slide guide  60  are formed on the inserting portion body  50 . Fixing convex portions  53   a  to  53   d  are formed on upper and lower surfaces of the inserting portion body  50  which opposedly face the restricting portions  22 A,  22 B of the base member  15  at four positions. To describe the configuration in detail, as shown in  FIG. 10A  and  FIG. 11A , three fixing convex portions  53   a  to  53   c  are formed on the upper surface  50   a  of the inserting portion body  50  at predetermined intervals in the vehicle inside-and-outside direction Z along which the inserting portion body  50  projects. As shown in  FIG. 10B  and  FIG. 11B , one fixing convex portion  53   d  is formed on a lower surface  50   b  of the inserting portion body  50  at a position on a distal end side of the inserting portion body  50 . These fixing convex portions  53   a  to  53   d  project in the vertical direction Y which intersects with (is orthogonal to) the longitudinal direction X which is the mounting direction along which the handle grip  40  is mounted on the base member  15 . The respective fixing convex portions  53   a  to  53   d  project in the direction which intersects with the vehicle inside-and-outside direction Z which is the direction in which the inserting portion  48  advances and retracts in the inside of the guide hole  20 , and is also the direction in which the inserting portion  48  is inserted into the guide hole  20 . 
     A positioning convex portion  54  which extends in a straight line shape along the vehicle inside-and-outside direction Z is formed on the lower surface  50   b  of the inserting portion body  50 . In the same manner as the fixing convex portions  53   a  to  53   d , the positioning convex portion  54  also projects in the vertical direction Y which intersects with the longitudinal direction X which is the mounting direction along which the grip body  42  is mounted on the base member  15 . The positioning convex portion  54  is formed on the inserting portion body  50  such that the positioning convex portion  54  is positioned at a middle portion of the inserting portion body  50  with respect to the entire length of the inserting portion body  50 . A projecting portion  55  which projects upwardly so as to have an approximately quadrangular shape is formed on the upper surface  50   a  of the inserting portion body  50  on a proximal end side of the inserting portion body  50 . 
     (Detailed Description of Slide Guide) 
     To describe the configuration with reference to  FIG. 12A  to  FIG. 13B  together with  FIG. 10A  and  FIG. 10B , the slide guide  60  includes: a pair of side frames  61 A,  61 B; and connecting portions  66 A,  66 B which connect these side frames  61 A,  61 B to each other. The slide guide  60  is made of a material which exhibits lower slide resistance against the restricting portions  22 A,  22 B of the base member  15  than against the inserting portion body  50  of the handle grip  40 . For example, the base member  15  is made of glass-containing nylon, and the grip body  42  is made of glass-containing nylon. On the other hand, the slide guide  60  is made of polyester elastomer. 
     The side frames  61 A,  61 B are plate bodies which are disposed so as to overlap with the upper surface  50   a  and the lower surface  50   b  forming both sides of the inserting portion body  50  in the vertical direction Y in which the axis L of the bearing portion  46  extends. Stopper portions  62 ,  62  which project in the vertical direction Y are formed on distal ends of the side frames  61 A,  61 B. To describe the configuration with reference to  FIG. 7A  to  FIG. 9A , a distance between outer ends of the stopper portions  62 ,  62  is substantially equal to the groove width H 1  of the guide hole  20 , and is larger than the groove width H 2  between the restricting portions  22 A,  22 B. When the handle grip  40  is manipulated so as to open a door, the stopper portions  62 ,  62  are brought into slide contact with the upper wall  21   a  and the lower wall  21   b  thus preventing the handle grip  40  from being inclined in the vertical direction Y. Further, the stopper portions  62 ,  62  are brought into contact with the restricting portions  22 A,  22 B so that the removal of the inserting portion  48  from the guide hole  20  is prevented. 
     As shown in  FIG. 12B  and  FIG. 14A , on the side frame  61 A disposed on the upper surface  50   a  of the inserting portion body  50  in an overlapping manner, fixing concave portions (fixing portions)  63   a  to  63   c  which correspond to the fixing convex portions  53   a  to  53   c  are formed respectively. As shown in  FIG. 12A  and  FIG. 14B , on the side frame  61 B disposed on the lower surface  50   b  of the inserting portion body  50  in an overlapping manner, a fixing concave portion  63   d  which corresponds to the fixing convex portion  53   d  is formed. An inner wall portion  64  is formed on the inner surface side of the side frames  61 A,  61 B respectively, and the inner wall portions  64  are positioned with a gap formed therebetween. The fixing concave portions  63   a ,  63   b ,  63   d  are formed on the inner wall portions  64  of the side frames  61 A,  61 B. In this embodiment, the fixing concave portions  63   a  to  63   d  are respectively formed of a through hole formed in the inner wall portion  64  or in the side frame  61 A. A positioning stepped portion  65  on which the projecting portion  55  formed on the inserting portion body  50  is disposed is formed on the proximal end side of the inner wall portion  64  of the side frame  61 A. 
     As most clearly shown in  FIG. 12B , the connecting portions  66 A,  66 B are formed on one ends and the other ends of the side frames  61 A,  61 B. The connecting portion  66 A positioned on the distal end side of the inserting portion  48  is formed into a plate shape extending approximately along an XY plane, and connects distal-end-side end portions of the side frames  61 A,  61 B to each other. The connecting portion  66 B positioned on the proximal end side of the inserting portion  48  is formed into a plate shape extending approximately along a YZ plane, and connects rear sides in the longitudinal direction X of the side frames  61 A,  61 B on the proximal end side to each other. On each of the connecting portions  66 A,  66 B, an extending and shrinking portion  67  formed of a concavo-convex portion having a bellows shape is formed. The extending and shrinking portion  67  allows the connecting portion  66 A,  66 B to extend and shrink in the vertical direction Y. In a state where a distance between the side frames  61 A,  61 B disposed on upper and lower sides is increased by the extending and shrinking portions  67 , the side frames  61 A,  61 B are disposed outside the inserting portion body  50 . Then, the respective side frames  61 A,  61 B are pressed in the direction Y in which the side frames  61 A,  61 B approach each other so that the fixing convex portions  53   a  to  53   d  are press-fitted into the fixing concave portions  63   a  to  63   d  respectively. 
     On the side frame  61 A disposed on an upper side of the inserting portion body  50 , the slide contact portion  68  which is brought into contact with the restricting portion  22 A when the handle grip  40  is at the non-manipulation position and the contact portion  70 A which can be brought into contact with the restricting portion  22 A when the handle grip  40  is at the manipulation position are formed. On the side frame  61 B disposed on a lower side of the inserting portion body  50 , a contact portion  70 B is formed. The contact portion  70 B is brought into contact with the restricting portion  22 B when the handle grip  40  is at the non-manipulation position, and can be brought into contact with the restricting portion  22 B when the handle grip  40  is at the manipulation position. 
     To describe the configuration with reference to  FIG. 12A  and  FIG. 12B  together with  FIG. 7A  and  FIG. 7B , the slide contact portion  68  is formed only on the side frame  61 A such that the slide contact portion  68  projects upward from the contact portion  70 A disposed on the upper side. A pair of slits  69 ,  69  which extends parallel to each other in the vehicle inside-and-outside direction Z is formed in the side frame  61 A so that the slide contact portion  68  is formed between the slits  69 ,  69 . The slits  69 ,  69  are formed in the side frame  61 A such that the slits  69 ,  69  extend toward the cabin side from positions of the side frame  61 A which correspond to ends of the restricting portions  22 A,  22 B on the vehicle-outside side when the handle grip  40  is at the non-manipulation position. 
     The slide contact portion  68  has a curved surface shape which bulges upward between the slits  69 ,  69 , and is elastically deformable in the vertical direction Y. As most clearly shown in  FIG. 7B , the slide contact portion  68  has a top portion  68   a  at a position offset toward the vehicle-outside side of the inserting portion  48  such that the slide contact portion  68  is brought into contact with the restricting portion  22 A in a state where the handle grip  40  is rotated to the non-manipulation position. With such a configuration, as shown in  FIG. 8A  to  FIG. 9B , when the handle grip  40  is rotated from the non-manipulation position to the manipulation position, the slide contact portion  68  is positioned at a position where the slide contact portion  68  is not brought into contact with the restricting portion  22 A. In this embodiment, the slide contact portion  68  is disposed at the position which corresponds to the positioning stepped portion  65  where the projecting portion  55  of the inserting portion body  50  is disposed. By arranging the projecting portion  55  of the inserting portion body  50  in the direction in which the slide contact portion  68  elastically deforms, excessive elastic deformation of the slide contact portion  68  is suppressed. 
     The contact portions  70 A,  70 B form outer side surfaces of the side frames  61 A,  61 B, and extend in the vehicle inside-and-outside direction Z which is the advancing and retracting direction of the inserting portion  48 . The contact portion  70 A forms a portion of the side frame  61 A on the cabin side extending from the slide contact portion  68 . The contact portion  70 B forms the whole side frame  61 B. The contact portions  70 A,  70 B are positioned with a distance therebetween which allows the contact portions  70 A,  70 B to be brought into contact with the restricting portions  22 A,  22 B of the base member  15  respectively in a state where the fixing convex portions  53   a  to  53   d  of the inserting portion body  50  are normally press-fitted into the fixing concave portions  63   a  to  63   d.    
     As shown in  FIG. 7A  and  FIG. 7B , in a state where the handle grip  40  is rotated to the non-manipulation position, the slide contact portion  68  is brought into contact with the restricting portion  22 A disposed on the upper side so that the contact portion  70 B disposed on the lower side is brought into contact with the lower restricting portion  22 B. As shown in  FIG. 9A  and  FIG. 9B , when the handle grip  40  is rotated to the manipulation position, the contact between the slide contact portion  68  and the restricting portion  22 A is released so that a gap which allows fine movement of the handle grip  40  is formed between the contact portion  70 A and the restricting portion  22 A and between the contact portion  70 B and the restricting portion  22 B respectively. When an external force in the vertical direction Y is applied to the handle grip  40  in such a manipulation position, the contact portions  70 A,  70 B are brought into contact with the restricting portions  22 A,  22 B which the contact portions  70 A,  70 B opposedly face and hence, the movement of the handle grip  40  is restricted. 
     As shown in  FIG. 12A  to  FIG. 13B , a cover portion  71  which covers the manipulating portion  51  formed on a distal end of the inserting portion body  50  is integrally formed with a distal end of the slide guide  60  by molding. The cover portion  71  is continuously formed with distal ends of the pair of side frames  61 A,  61 B, and is formed into a hollow right-angled trapezoidal shape. An opening portion  72  which allows the insertion of the manipulating portion  51  is formed in the cover portion  71  on a proximal end side in the projecting direction X. To describe the configuration with reference to  FIG. 13B  to  FIG. 14B , a slit  73  extending in the longitudinal direction X which is the direction in which the cover portion  71  projects is formed on a lower surface of the cover portion  71 . With the formation of the slit  73 , it is possible to ensure a state where the connecting portion  66 A is extendable and shrinkable. 
     A center connecting portion  74  is formed on the slide guide  60 . The center connecting portion  74  engages with the stepped portion  52   a  formed on a proximal end side of the cut-away portion  52  of the inserting portion body  50 . The center connecting portion  74  is formed into a U shape and has end portions thereof continuously connected to middle portions of the pair of side frames  61 A,  61 B respectively. The center connecting portion  74  has an end surface portion  74   a  which is made to overlap with an end surface  50   c  of the inserting portion body  50  on a bearing portion  46  side, and an opposedly-facing surface  74   b  which opposedly faces the manipulating portion  51 . By forming the center connecting portion  74  on the slide guide  60 , it is possible to prevent the increase of the distance between the side frames  61 A,  61 B at a middle portion of the slide guide  60  so that excessive expansion of the connecting portions  66 A,  66 B disposed on both ends of the slide guide  60  can be suppressed. The center connecting portion  74  also plays a role of a guide portion at the time of mounting the slide guide  60  on the inserting portion body  50 . 
     As shown in  FIG. 12A ,  FIG. 13B  and  FIG. 14B , a pair of positioning portions  75 ,  76  is formed on the side frame  61 B of the slide guide  60 . The positioning portions  75 ,  76  are brought into contact with the positioning convex portion  54  of the inserting portion body  50 . The first positioning portion  75  is formed on a distal end side of the side frame  61 B in the vehicle inside-and-outside direction Z (longitudinal direction) such that the first positioning portion  75  extends along the longitudinal direction. An end portion of the first positioning portion  75  on a proximal end side agrees with the position where the center connecting portion  74  is formed. The first positioning portion  75  is formed such that the first positioning portion  75  is positioned at an end portion of the side frame  61 B in the longitudinal direction X (width direction), that is, at the end portion of the side frame  61 B in the direction in which the cover portion  71  projects. The second positioning portion  76  is formed on the proximal end side of the side frame  61 B in the vehicle inside-and-outside direction Z such that the second positioning portion  76  extends along the longitudinal direction. An end portion of the second positioning portion  76  on the distal end side is positioned such that a distance which allows the insertion of the positioning convex portion  54   
     is formed between the end portion of the second positioning portion  76  on the distal end side and an end portion of the first positioning portion  75  on the proximal end side. The second positioning portion  76  is also formed on the side frame  61 B such that the second positioning portion  76  is positioned at the end portion of the side frame  61 B on a side opposite to the first positioning portion  75  in the longitudinal direction X. 
     As shown in  FIG. 16B , in a state where the slide guide  60  is mounted on the inserting portion body  50 , the first positioning portion  75  is brought into contact with a first side surface of the positioning convex portion  54  disposed on the distal end  54   a  side (one end side) of the positioning convex portion  54  and extending in the direction in which the manipulating portion  51  projects. The second positioning portion  76  is brought into contact with a second side surface of the positioning convex portion  54  disposed on the proximal end  54   b  side (the other end side) of the positioning convex portion  54  and on the side opposite to the first positioning portion  75 . With such a configuration, the positioning convex portion  54  which is formed on the inserting portion body  50  in a projecting manner is positioned such that end surfaces of the positioning convex portion  54  in the longitudinal direction X are sandwiched between the first positioning portion  75  and the second positioning portion  76 . 
     As shown in  FIG. 4A , a locking pawl  77  is formed on the slide guide  60 , and the locking pawl  77  projects outward from an end portion of the slide guide  60  on the vehicle-outside side. By mounting the slide guide  60  on the inserting portion body  50 , the locking pawl  77  engages with an engaging-receiving portion  56  formed on the grip body  42 . With such a configuration, the removal and the positional displacement of the slide guide  60  from the inserting portion body  50  are prevented. 
     (Assembling of Door Handle Device) 
     First, in mounting the slide guide  60  on the inserting portion body  50  of the grip body  42 , as shown in  FIG. 15A , the inserting portion body  50  is arranged on the side where the cover portion  71  of the slide guide  60  projects. Next, as shown in  FIG. 15B  and  FIG. 16A , the manipulating portion  51  disposed on a distal end of the inserting portion body  50  is inserted into and made to pass through a space in the slide guide  60  surrounded by the pair of side frames  61 A,  61 B, the center connecting portion  74  and the connecting portion  66 B. 
     As shown in  FIG. 15C , the insertion of the inserting portion body  50  into the slide guide  60  is stopped when the center connecting portion  74  and the stepped portion  52   a  are brought into contact with each other. In this state, the slide guide  60  and the inserting portion body  50  are rotated relative to each other about the stepped portion  52   a  which is brought into contact with the center connecting portion  74 . With such steps, as shown in  FIG. 16B , it is possible to make the slide guide  60  cover the inserting portion body  50  by extending and shrinking the extending and shrinking portions  67  disposed on both ends of the slide guide  60 . Lastly, the pair of side frames  61 A,  61 B is pressed in the directions in which the side frames  61 A,  61 B approach each other and the fixing convex portions  53   a  to  53   d  are press-fitted into the fixing concave portions  63   a  to  63   d  respectively. 
     In this manner, due to the provision of the extending and shrinking portions  67  formed on the connecting portions  66 A,  66 B, the slide guide  60  can be shifted in the direction in which the distance between the pair of side frames  61 A,  61 B is expanded and in the direction in which the distance between the pair of side frames  61 A,  61 B is shrunken. Accordingly, it is possible to ensure a space for press-fitting the fixing convex portions  53   a  to  53   d  of the inserting portion body  50  into the fixing concave portions  63   a  to  63   d  of the slide guide  60 . As a result, it is possible to enhance operability in mounting the slide guide  60  on the inserting portion body  50  of the handle grip  40 . 
     To describe the configuration with reference to  FIG. 16B  together with  FIG. 7A , in a state where the slide guide  60  is mounted on the inserting portion body  50  of the grip body  42 , the pair of side frames  61 A,  61 B is disposed on the upper and lower surfaces  50   a ,  50   b  of the inserting portion body  50  in an overlapping manner. The manipulating portion  51  of the inserting portion body  50  is disposed in the inside of the cover portion  71  by insertion, and the stepped portion  52   a  engages with the center connecting portion  74 . Further, a state is provided where the positioning convex portion  54  is sandwiched between the first positioning portion  75  and the second positioning portion  76 . Accordingly, even when an external force is applied to the slide guide  60 , there is no possibility that the slide guide  60  is easily removed from the inserting portion  48 . 
     Next, the handle grip  40  on which the slide guide  60  is mounted is mounted on the base member  15  mounted on the door panel  1  on the cabin side. To be more specific, the arm portion  45  of the grip body  42  is inserted into the arm mounting hole  18  formed in the base member  15  through the first opening portion  2  from the vehicle-outside side. On the other hand, the inserting portion  48  of the handle grip  40  is inserted into the insertion allowing portion  23  of the guide hole  20  formed in the base member  15  through the second opening portion  3  from the vehicle-outside side. In this embodiment, the fixing convex portions  53   a  to  53   d  formed on the inserting portion body  50  project in the direction Y which intersects with the direction Z in which the inserting portion  48  is inserted into the insertion allowing portion  23 . Accordingly, even when the slide guide  60  interferes with the surrounding walls  21   a  to  21   d  of the guide hole  20 , there is no possibility that the slide guide  60  is removed from the inserting portion body  50 . 
     In a state where the arm portion  45  is inserted into the arm mounting hole  18  and the inserting portion  48  is inserted into the insertion allowing portion  23  of the guide hole  20 , the bearing portions  46  of the arm portion  45  and the shaft portions  19  of the base member  15  are positioned with a predetermined distance therebetween in the longitudinal direction X. In this state, the handle grip  40  is slid with respect to the base member  15  along the longitudinal direction X so that the bearing portions  46  are mounted on the shaft portions  19  in a rotatable manner. Accordingly, as shown in  FIG. 2A  and  FIG. 7A , the inserting portion  48  is moved from the insertion allowing portion  23  of the guide hole  20  to the guide portion  24  where the restricting portions  22 A,  22 B project and is disposed at the guide portion  24 . The manipulating portion  51  of the inserting portion  48  is positioned such that the manipulating portion  51  is engageable with the manipulation receiving portion  32  of the lever member  30  on the cabin side. In this embodiment, the fixing convex portions  53   a  to  53   d  of inserting portion body  50  project in the direction Y which intersects with the direction X in which the bearing portions  46  are mounted on the shaft portions  19 . Accordingly, even when the slide guide  60  interferes with the restricting portions  22 A,  22 B, there is no possibility that the slide guide  60  is removed from the inserting portion body  50 . 
     By mounting the handle grip  40  on the base member  15  fixed to the door panel  1  in this manner, the assembling of the door handle device  10  is completed. 
     (Operation of Door Handle Device) 
     As shown in  FIG. 2A ,  FIG. 7A  and  FIG. 7B , in a state where the handle grip  40  is rotated to the non-manipulation position, the slide contact portion  68  of the inserting portion  48  of the handle grip  40  is elastically brought into contact with the restricting portion  22 A of the base member  15 . With such an elastic contact, the inserting portion  48  is biased downward so that the contact portion  70 B positioned on a side opposite to the slide contact portion  68  is brought into contact with the restricting portion  22 B. Accordingly, the inserting portion  48  of the handle grip  40  which is disposed between the restricting portions  22 A,  22 B of the base member  15  is brought into pressure contact with both the restricting portions  22 A,  22 B. As a result, rattling of the handle grip  40  in the vertical direction can be suppressed. 
     Usually, a user grips the handle grip  40  from above and hence, a downward load is applied to the handle grip  40 . In such an operation, there is no gap below the inserting portion  48  of the handle grip  40  in a non-manipulating state and hence, the handle grip  40  is maintained in a state where the position of the handle grip  40  is restricted by the restricting portions  22 A,  22 B. Accordingly, even when an external force in the vertical direction is applied to the handle grip  40  at the non-manipulation position, there is no possibility that the user who grips the handle grip  40  receives a sensation of rattling. Further, even when the user moves the handle grip  40  in the lower direction in a state where the handle grip  40  is at the non-manipulation position, the slide contact portion  68  having elasticity is brought into contact with the restricting portion  22 A of the base member  15  and hence, rattling can be suppressed. 
     As shown in  FIG. 8A  and  FIG. 8B , when the handle grip  40  is manipulated in the vehicle-outside direction Z so as to open the door, the inserting portion  48  is moved in the vehicle-outside direction Z along the guide hole  20 . With such an operation, an elastic contact of the slide contact portion  68  with the restricting portion  22 A is gradually released while the slide contact portion  68  is brought into slide contact with the restricting portion  22 A. When the slide contact portion  68  is separated from the restricting portion  22 A and the contact portion  70 A is disposed at the position where the contact portion  70 A opposedly faces the restricting portion  22 A, the pressure contact state between the inserting portion  48  and the restricting portions  22 A,  22 B is released. Accordingly, slide resistance of the handle grip  40  against the base member  15  can be reduced. As a result, it is possible to prevent manipulability of the handle grip  40  from being impaired. 
     As shown in  FIG. 2B ,  FIG. 9A  and  FIG. 9B , when the manipulation receiving portion  32  of the lever member  30  is brought into contact with the restricting portions  22 A,  22 B, the manipulation of the handle grip  40  in the vehicle-outside direction Z is restricted. When the handle grip  40  is at such a manipulation position, the contact portions  70 A,  70 B of the inserting portion  48  are positioned with a gap therebetween such that the contact portions  70 A,  70 B can be brought into contact with the restricting portions  22 A,  22 B of the base member  15 . In this embodiment, an axis of rotation L of the handle grip  40  extends in the vertical direction Y and hence, the contact portion  70 B disposed on the lower side is brought into contact with the restricting portion  22 B which the contact portion  70 B opposedly faces, and the contact portion  70 A disposed on the upper side is positioned with a distance between the contact portion  70 A and the restricting portion  22 A. Accordingly, even when a downward load is applied to the handle grip  40  at such a manipulation position, breakage of the shaft portion  19  or the bearing portion  46  can be prevented. When the handle grip  40  is manipulated, the contact portion  70 B is brought into slide contact with the restricting portion  22 B and hence, there is no possibility that manipulability of the handle grip  40  is impaired. 
     When the user releases his hand from the handle grip  40 , the handle grip  40  is rotated in the cabin side direction Z by a biasing force of the return spring  35  of the lever member  30 . In this case, a gap is formed between the inserting portion  48  of the handle grip  40  and the restricting portions  22 A,  22 B and hence, there is no possibility of a return failure which may be caused due to slide resistance between these portions. Then, the handle grip  40  is brought into contact with the base member  15  or the door panel  1  so that the rotation of the handle grip  40  in the cabin side direction Z is stopped at the non-manipulation position. With such an operation, the slide contact portion  68  of the inserting portion  48  of the handle grip  40  is brought into pressure contact with the restricting portion  22 A so that the handle grip  40  is returned to a state where the contact portion  70 B is elastically brought into contact with the restricting portion  22 B. 
     As described above, in the door handle device  10  of this embodiment, the slide guide  60  having the slide contact portion  68  which is brought into slide contact with the restricting portion  22 A of the base member  15  is disposed on the inserting portion  48  of the handle grip  40  and hence, rattling of the handle grip  40  with respect to the base member  15  can be prevented. Accordingly, by merely providing the fixing portions (fixing convex portions  53   a  to  53   d ) for fixing the slide guide  60  to the handle grip  40 , the existing base member (existing product)  15  can be reused without making any change in design and hence, the increase of a manufacturing cost can be held in check at the time of changing a design of the handle grip  40 . 
     The slide guide  60  is made of a material which exhibits lower slide resistance against the base member  15  than the grip body  42  does and hence, slide resistance at the time of manipulating the handle grip  40  can be reduced whereby the manipulability of the handle grip  40  can be enhanced with certainty. Further, the slide guide  60  which includes the pair of side frames  61 A,  61 B is formed into an integral body by the connecting portions  66 A,  66 B and hence, a part management is facilitated, and a manufacturing cost can be lowered. Further, the slide contact portion  68 , the contact portions  70 A,  70 B, and the cover portion  71  are formed integrally with the slide guide  60  by molding and hence, it is possible to suppress the increase of the number of parts and the increase of a manufacturing cost. The manipulating portion  51  provided for manipulating the lever member  30  is covered by the cover portion  71  and hence, wear on the lever member  30  can be suppressed. 
     The door handle device of the present invention is not limited to the configuration described in the embodiments, and various modifications are conceivable. 
     For example, as shown in  FIG. 17 , a chamfered portion  22   b  may be formed on the restricting portion  22 A of the base member  15  on the cabin side with which the slide contact portion  68  of the inserting portion  48  of the handle grip  40  is brought into slide contact. By forming the chamfered portion  22   b  on the restricting portion  22 A, slide resistance between the slide contact portion  68  and the restricting portion  22 A can be reduced and hence, manipulability of the handle grip  40  can be further enhanced. 
     The extending and shrinking portion  67  is formed over the whole connecting portion  66 A,  66 B in the above-mentioned embodiments. However, the extending and shrinking portion  67  may be formed on a part of the whole connecting portion  66 A,  66 B. The extending and shrinking portion  67  is formed on the pair of connecting portions  66 A,  66 B respectively. However, the extending and shrinking portion  67  may be formed only on either the connecting portion  66 A or the connecting portion  66 B. The extending and shrinking portion  67  is not formed on the center connecting portion  74 . However, the extending and shrinking portion  67  may be further formed on the center connecting portion  74 . Alternatively, the extending and shrinking portion  67  may be formed on none of connecting portions  66 A,  66 B,  74  which respectively connect the side frames  61 A,  61 B to each other. 
     In the above-mentioned embodiments, the slide contact portion  68  is configured to be elastically deformable by forming the pair of slits  69 ,  69  on the slide contact portion  68 . However, the slide contact portion  68  may be configured to be elastically non-deformable by increasing a wall thickness of a portion of the side frame  61 A disposed on the upper side. In the above-mentioned embodiments, the shaft portions  19  are formed on the base member  15 , and the bearing portions  46  are formed on the handle grip  40 . However, the bearing portions may be formed on the base member  15 , and the shaft portions may be formed on the handle grip  40 . It is needless to say that the configuration that the handle grip  40  is rotatably and pivotally supported by the base member  15  can be changed as desired. 
     In the above-mentioned embodiments, the handle grip  40  is rotated in the horizontal direction about the axis of rotation L extending in the vertical direction Y. However, the handle grip  40  may be rotated in the vertical direction about an axis of rotation extending in the longitudinal direction X. Further, in the above-mentioned embodiments, as the fixing portion for fixing the inserting portion body  50  of the handle grip  40  and the slide guide  60  to each other, the fixing convex portions  53   a  to  53   d  are formed on the inserting portion body  50 , and the fixing concave portions  63   a  to  63   d  are formed on the slide guide  60 . However, fixing concave portions may be formed on the inserting portion body  50 , and fixing convex portions may be formed on the slide guide  60 . Further, the fixing portion is not limited to the combination of the convex portion and the concave portion, and the fixing portion can be changed as desired. 
     The slide contact portion  68  is made elastically deformable by forming the pair of slits  69 ,  69  on the slide contact portion  68 . However, the slide contact portion  68  may be made elastically non-deformable by increasing a wall thickness of a portion of the side frame  61 A disposed on the upper side. The inserting portion  48  includes the inserting portion body  50  of the grip body  42  and the slide guide  60  which is a separate member from the inserting portion body  50 . However, the inserting portion  48  may not include the slide guide  60 . In this case, the slide contact portion  68  is formed on the grip body  42 .