Abstract:
A device for assembling a rear seat back assembly includes a mounting bracket having an opening and a locking protrusion formed inside of the mounting bracket, and a locking pin extended from a rear seat back frame. In particular, the locking pin includes a dislodgement recess on its outer circumferential surface and the dislodgment recess passes the locking protrusion when they are aligned each other with predetermined positions. For example, during insertion into or disengagement from the mounting bracket at a predetermined angle, the disengagement groove site passes through the locking protrusion site without being hooked so as to be mountable onto or removable from the mounting bracket.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation of International Application No. PCT/KR2013/010852, filed on Nov. 27, 2013, which claims the benefit of Korean Application 10-2012-0136441, filed on Nov. 28, 2012. The disclosures of the above applications are incorporated herein by reference. 
     
    
     FIELD 
       [0002]    The present disclosure relates to a rear seat back assembly, and more particularly, to a device for assembling a rear seat back assembly in which the angle a rear seat back frame is adjustable. 
       BACKGROUND 
       [0003]    The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. 
         [0004]    Generally, seats are provided in the interior of a vehicle in order to provide a smoother ride and improve convenience. Vehicle seats are typically divided into a bucket seat and a bench seat. 
         [0005]    Bucket seats are generally employed for the first line of seats of vehicles, i.e. the front seats of vehicles, and are individually configured and disposed for the driver and the passenger next to the driver. On the other hand, a bench seat is employed for the second line of seats of vehicles, i.e. the rear seats of vehicles, and forms the entire back seat as a unitary body. 
         [0006]    In addition, the bench seat includes a seat cushion on which the buttocks of a passenger are seated, a seat back or a back of the seat, and a headrest fitted to the seat back. These components are mounted to the interior of vehicles in the position where they are separated. 
         [0007]      FIG. 1  illustrates a related-art structure for mounting a seat back of a bench seat to the interior of a vehicle. The seat back-mounting structure includes a hinge pin  10 , a compression plate  20 , and a support bracket  30 . The hinge pin  10  has a catch head  11  integrally formed on the distal end thereof, and is perpendicularly fixed to the frame of the seat back. The compression plate  20  is fitted around the hinge pin  10  such that the compression plate  20  can slide in the longitudinal direction while being elastically supported by the hinge pin  10 . The support bracket  30  is fixed to a vehicle body. The support bracket  30  has a space section  31  in the central portion thereof and a cut section  32  that is communicably formed within the space section  31 . 
         [0008]    However, the above-described structure of the related art is intended to produce the coupling force of the hinge pin from the compressive force of the compression plate by simply inserting the hinge pin into the cut section of the support bracket. We have discovered that, since the coupling force of the hinge pin is weak, the seat back is not firmly mounted, which is problematic. In particular, since the compression plate compresses the support bracket using the elastic force of the spring, the operation of fitting or detaching the seat back to or from the vehicle is difficult. 
       SUMMARY 
       [0009]    The present disclosure provides a device for assembling a rear seat back assembly, in which the angle of a rear seat back frame is adjustable such that a rear seat back can be fitted to and detached from a wheel body in a simple and easy manner. 
         [0010]    The present disclosure provides a device for assembling a rear seat back assembly including: a mounting bracket coupled to a vehicle body, wherein the mounting bracket has an opening in a side portion and a locking protrusion formed on an inner portion; and a locking pin protruding from one end of a rear seat back frame, wherein the locking pin has a dislodgement recess on an outer circumferential surface, wherein the dislodgement recess is able to pass by the locking protrusion such that no portion thereof is caught by the locking protrusion when the locking pin is fitted to or detached from the mounting bracket. 
         [0011]    The locking protrusion may protrude from an inner portion of the mounting bracket. A fitting recess may be defined under the locking protrusion such that the locking pin is fitted into the fitting recess, the fitting recess having a size allowing the locking pin to be fitted into the fitting recess with the outer circumference of the locking pin being in surface contact with the fitting recess. The dislodgement recesses may be formed in a cut shape on at outer circumferential surface of the locking pin. 
         [0012]    The mounting bracket may have an engagement recess formed in an inner portion. The locking pin may have an engagement flange on a distal end thereof, the engagement flange being configured to engage with the engagement recess. 
         [0013]    The device may further include a mounting bush fitted on the locking pin, the mounting bush being disposed between the rear seat back frame and the mounting bracket. 
         [0014]    According to the present disclosure, it is possible to insert or remove the locking pin into or from the mounting bracket by rotating the locking pin fixed to the rear seat back frame to a predetermined angle. It is therefore possible to fit or detach the rear seat back to or from the wheel body in a simple and easy manner, thereby improving the convenience of assembling the rear seat back. 
         [0015]    Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. 
     
    
     
       DRAWINGS 
         [0016]    In order that the disclosure may be well understood, there will now be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which: 
           [0017]      FIG. 1  is a view illustrating a structure for assembling a rear seat back in the related art; 
           [0018]      FIG. 2  is an enlarged view illustrating the overall configuration of a rear seat back assembly according to the present disclosure and a configuration in which a rear seat back frame is coupled to a mounting bracket; 
           [0019]      FIG. 3  is an exploded view illustrating components for assembling in the rear seat back assembly according to the present disclosure; 
           [0020]      FIG. 4  is a view illustrating a position where a locking pin according to the present disclosure is fitted into the mounting bracket at a predetermined angle of rotation; and 
           [0021]      FIG. 5  is a view illustrating a position where the locking pin is rotated to an angle at which the locking pin is prevented from dislodging from the mounting bracket. 
       
    
    
       [0022]    The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. 
       DETAILED DESCRIPTION 
       [0023]    The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. 
         [0024]    Referring to  FIGS. 2 to 5 , a device for assembling a rear seat back assembly according to the present disclosure includes a mounting bracket  300  and a locking pin  200 . The mounting bracket  300  is coupled to a vehicle body  400 , and has an opening in a side portion and locking protrusions  320  formed on inner portions. The locking pin  200  protrudes from one end of a rear seat back frame  100 , and has dislodgement recesses  220  at outer circumferential portions at positions corresponding to the locking protrusions  320 . With this configuration, when the locking pin  200  is inserted into or removed from the mounting bracket  300  at a predetermined angle, the dislodgement recesses  220  can pass between the locking protrusions  320  such that no portions thereof are caught by the locking protrusions  320 . In this manner, the locking pin  200  can be fitted to or detached from the mounting bracket  300 . 
         [0025]    Specifically, the rear seat back assembly includes not only the rear seat back frame  100 , but also the locking pin  200  coupled to the rear seat back frame  100  and the mounting bracket  300  fixed to the vehicle body  400 . 
         [0026]    Here, the mounting bracket  300  is fixedly mounted to the vehicle frame  400 . A fixing bracket  410  helps the mounting bracket  300  be mounted to the vehicle frame  400 . The fixing bracket  410  may be provided as a separate part. The fixing bracket  410  has a recess into which the mounting bracket  300  can be fitted. 
         [0027]    The mounting bracket  300  has an upwardly open mounting recess  310  in the central portion thereof. A U-shaped support recess  312  is formed in one portion of the mounting recess  310 . The support recess  312  is cut in the direction of the rear seat back frame  100 . With this configuration, the locking pin  200  is inserted into and supported by the support recess  312 . 
         [0028]    In particular, the locking protrusions  320  protrude from both inner sides of the central portion of the mounting recess  310  such that the locking protrusions  320  face each other. This configuration allows the locking pin  200  to be inserted into and removed from the mounting bracket when the locking pin  200  is at a predetermined angle of rotation. 
         [0029]    In addition, the locking pin  200  is disposed at the lower end of the rear seat back frame  100  such that the locking pin  200  protrudes toward the mounting bracket  300 . The protruding end portion of the locking pin  200  is inserted into the mounting bracket  300  such that the locking pin  200  is rotatable with respect to the mounting bracket  300 . 
         [0030]    In particular, the dislodgement recesses  220  in the both outer circumferential portions of the locking pin  200  are cut by a width equal to the length by which the locking protrusions  320  protrude. With this configuration, when the locking pin  200  is inserted into or removed from the mounting bracket  300  at a predetermined angle, none of the dislodgement recesses  220  of the locking pin  200  are caught by the locking protrusions  320 , whereby the locking pin  200  can be fitted to or detached from the mounting bracket  300 . 
         [0031]    In this case, the predetermined angle refers to the angle at which the thickness of the locking pin  200  having the dislodgement recesses  220  formed in both sides thereof is smaller than the distance between the locking protrusions  320 . 
         [0032]    As illustrated in  FIGS. 4 and 5 , when the locking pin  200  fixed to the rear seat back frame  100  is fitted to the interior of the mounting bracket  300 , the ability to insert the locking pin  200  is determined according to the angle of the locking pin  200 . In detail, when the locking pin  200  is inserted into the mounting bracket  300 , if the dislodgement recesses  220  of the locking pin  200  are not aligned with the locking protrusions  320 , the outer circumference of the locking pin  200  is caught by the locking protrusions  320 , such that the locking pin  200  cannot move to the lower portions of the locking protrusions  320 . Consequently, the locking pin  200  cannot be fitted to the mounting bracket  300 . 
         [0033]    Here, when the dislodgement recesses  220  of the locking pin  200  are aligned with the locking protrusions  320  by rotating the locking pin  200 , the thickness of the locking pin  200  is smaller than or equal to the distance between the locking protrusions  320  due to the cut shape of the dislodgement recesses  220 , such that the locking pin  200  can move downwardly passing between the locking protrusions  320 . Consequently, the locking pin  200  can be fitted to the mounting bracket  300 . 
         [0034]    That is, when the locking pin  200  is rotated to the predetermined angle such that none of the dislodgement recesses  220  is caught by the locking protrusions  320 , the locking pin  200  can be fitted to or detached from the mounting bracket  300 . Accordingly, the rear seat back frame  100  can be more easily fitted to or detached from the vehicle body  400 , thereby improving the convenience of assembling the rear seat back. 
         [0035]    In addition, after the locking pin  200  is fitted to the mounting bracket  300 , the locking pin  200  is rotated to and left at an angle at which the locking protrusions  320  are misaligned with the dislodgement recesses  220 , whereby the locking pin  200  is prevented from dislodging from the mounting bracket  300 . 
         [0036]    Meanwhile, the locking protrusions  320  protrude from the inner surfaces of the mounting bracket  300 . A fitting recess  340  is formed under the locking protrusions  320  such that the locking pin  200  can be fitted into the fitting recess  340 . The fitting recess  340  has a size allowing the locking pin  200  to be fitted into the fitting recess  340  with the outer circumference of the locking pin  200  being in surface contact with the fitting recess  340 . The dislodgement recesses  220  may be shaped such that the dislodgement recesses  220  are cut in the outer circumferential surfaces of the locking pin  200 . 
         [0037]    That is, when the locking pin  200  is inserted into the mounting bracket  300 , the locking pin  200  passes between the locking protrusions  320  and subsequently is fitted into the fitting recess  340  formed under the locking protrusions  320 . Here, the outer diameter of the locking pin  200  is equal to or greater than the inner diameter of the fitting recess  340  such that the locking pin  200  is fitted into the fitting recess  340  by surface contact. This feature prevents the locking pin  200  from being loosely fitted into the fitting recess  340 . 
         [0038]    In addition, an engagement recess  330  is formed in the inner portion of the mounting bracket  300 , and an engagement flange  230  is formed on the distal end of the locking pin  200 , the engagement flange  230  being configured to engage with the engagement recess  330 . That is, the engagement flange  230  formed on the distal end of the locking pin  200  engages into the engagement recess  330  formed in the mounting bracket  300 , whereby the locking pin  200  is prevented from being separated from the mounting bracket  300  in the axial direction thereof. 
         [0039]    The locking pin  200  further includes a mounting bush  210  fitted thereon. The mounting bush  210  is positioned between the rear seat back frame  100  and the mounting bracket  300 . The mounting bush  210  serves to inhibit or prevent the rotation of the locking pin  200  from being obstructed by the friction between the mounting bracket  300  and the rear seat back frame  100 . 
         [0040]    In the device for assembling a rear seat back assembly according to the present disclosure illustrated in  FIGS. 4 and 5  as described above, when the locking pin  200  fixed to the rear seat back frame  100  is fitted into the mounting bracket  300  in the top-to-bottom direction, the locking pin  200  moves downwardly by passing between the locking protrusions  320  when the dislodgement recesses are aligned with the locking protrusions  320  due to the angle at which the locking pin  200  is inserted. Consequently, the locking pin  200  is fitted to the mounting bracket  300 . 
         [0041]    The operation of rotating the locking pin  200  to the predetermined angle of rotation as described above allows the rear seat back frame  100  to be fitted to and detached from the vehicle body  400  in an easier and simpler manner, thereby improving the convenience of assembling the rear seat back. 
         [0042]    When the dislodgement recesses  220  are misaligned with the locking protrusions  320  due to the angle at which the locking pin  200  is inserted and consequently the locking pin  200  is caught by the locking protrusions  320 , the locking pin  200  cannot pass between the locking protrusions  320 . In this case, the locking pin  200  cannot be fitted to the mounting bracket  300 . In contrast, in the position where the locking pin  200  is fitted into the fitting recess  340 , this feature prevents the locking pin  200  from dislodging from the mounting bracket  300 . 
         [0043]    Although the exemplary embodiments of the present disclosure have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the present.