Patent Publication Number: US-2022227320-A1

Title: Bumper attachment retainer

Description:
TECHNICAL FIELD 
     The present disclosure relates to a bumper attachment retainer for attaching a bumper to a vehicle body. 
     BACKGROUND ART 
     In a bumper fixing (bumper attachment retainer) disclosed in Japanese Patent Application Laid-Open (JP-A) No. 2007-125977, a bumper fixing is attached to a vehicle body, and a fastener is employed to attach a bumper to the vehicle-body-attached bumper fixing. 
     SUMMARY OF INVENTION 
     Technical Problem 
     With bumper attachment retainers hitherto, a fastener is employed to attach a bumper to the vehicle-body-attached bumper retainer. Such a fastener is employed to restrict the position of the bumper in both an attachment direction and a detachment direction of the bumper. 
     With such a bumper attachment retainer, a portion of the retainer that restricts the position in the bumper attachment direction might break if the bumper receives an external shock and the bumper moves in a bumper attachment direction. 
     The present disclosure addresses the issue of, without employing a fastener, restricting the position of a bumper in a bumper attachment direction and detachment direction and suppressing the portion restricting position in the bumper attachment direction from breaking when the bumper has moved in the attachment direction. 
     Solution to Problem 
     A bumper attachment retainer of a first aspect of the present disclosure includes: a support portion configured to support, from a back face of a bumper, an upper face section of the bumper at which an upper face of the bumper is formed, the bumper having a U-shaped cross-section; a first upper restricting portion configured to make contact with the upper face section of the bumper, which is disposed at a reference position with the upper face section supported by the support portion, to restrict a position of the bumper in an attachment direction, and to release positional restriction of the bumper in a case in which a motive force in the attachment direction acting on the bumper disposed at the reference position is a predetermined force or greater; and a second upper restricting portion configured to make contact with the upper face section of the bumper disposed at the reference position and to restrict a position of the bumper in a detachment direction. 
     The bumper attachment retainer of the present disclosure enables the position of a bumper to be restricted in both the attachment direction and the detachment direction of the bumper without using a fastener. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an overall perspective view illustrating a bumper attachment retainer according to a first exemplary embodiment of the present disclosure. 
         FIG. 2  is an enlarged perspective view illustrating a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 3A  is a state diagram illustrating a state of a second upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 3B  is a state diagram illustrating a state of a second upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 3C  is a state diagram illustrating a state of a second upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 4A  is a state diagram illustrating a state of a second upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 4B  is a state diagram illustrating a state of a second upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 4C  is a state diagram illustrating a state of a second upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 5A  is a state diagram illustrating a state of a first upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 5B  is a state diagram illustrating a state of a first upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 5C  is a state diagram illustrating a state of a first upper restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 6A  is a state diagram illustrating a state of a lower restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 6B  is a state diagram illustrating a state of a lower restricting portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 7  is a cross-section illustrating a support portion provided to a bumper attachment retainer according to the first exemplary embodiment of the present disclosure. 
         FIG. 8  is an exploded perspective view illustrating a bumper attachment retainer according to a first exemplary embodiment of the present disclosure, a bumper, and a headlamp. 
         FIG. 9  is a partial exploded perspective view illustrating a bumper attachment retainer according to a first exemplary embodiment of the present disclosure, a bumper, and a headlamp. 
         FIG. 10  is a perspective view illustrating a bumper attachment retainer according to a first exemplary embodiment of the present disclosure, a bumper, and a headlamp. 
         FIG. 11  is an overall perspective view illustrating a bumper attachment retainer according to a first exemplary embodiment of the present disclosure, a bumper, and a headlamp. 
         FIG. 12A  is a state diagram illustrating a state of a first restricting portion provided to a bumper attachment retainer according to a second exemplary embodiment of the present disclosure. 
         FIG. 12B  is a state diagram illustrating a state of a first restricting portion provided to a bumper attachment retainer according to the second exemplary embodiment of the present disclosure. 
         FIG. 12C  is a state diagram illustrating a state of a first restricting portion provided to a bumper attachment retainer according to the second exemplary embodiment of the present disclosure. 
         FIG. 13A  is a state diagram illustrating a state of a lower restricting portion provided to a bumper attachment retainer according to the second exemplary embodiment of the present disclosure. 
         FIG. 13B  is a state diagram illustrating a state of a lower restricting portion provided to a bumper attachment retainer according to the second exemplary embodiment of the present disclosure. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     First Exemplary Embodiment 
     An example of a bumper attachment retainer according to a first exemplary embodiment of the present disclosure will now be described with reference to  FIG. 1  to  FIG. 11 . Note that arrow H in the drawings illustrates a vertical direction of a bumper, arrow W illustrates a width direction of a bumper, and arrow L illustrates a front-rear direction of a bumper. 
     Overall Configuration 
     As illustrated in  FIG. 11 , bumper attachment retainers  10  (hereafter referred to as “bumper retainers  10 ”) are respectively arranged below a pair of headlamps  100 . 
     Headlamps  100   
     As illustrated in  FIG. 8 , the headlamps  100  are attached to a non-illustrated vehicle body and each includes a lamp section  102  and an attachment section  104  disposed below the lamp section  102 , to which the bumper retainers  10  are attached. The attachment section  104  is plate shaped with a plate thickness direction along the front-rear direction of a bumper (hereafter “bumper front-rear direction”), and is rectangular shaped as viewed along a bumper front-rear direction, extending along a width direction of the bumper (hereafter “bumper width direction”). Moreover, a pair of through holes  104   a  are formed penetrating through the attachment section  104  in a bumper front-rear direction and separated from each other in the bumper width direction. Moreover, the through holes  104   a  are circular shaped as viewed in the bumper front-rear direction. 
     Bumper  110   
     A bumper  110  is integrally molded using a resin material (for example, a polypropylene resin) at a thickness of, for example from 2 mm to 4 mm. The bumper  110  has a U-shaped cross-section opening rearward in the bumper front-rear direction, as illustrated in  FIG. 11 . Furthermore, as illustrated in  FIG. 8 , the bumper  110  includes an upper face section  112  formed with an upward facing upper face  112   a,  and a vertical face section  118  formed with a vertical face  118   a  facing forward in the bumper front-rear direction. An upper edge of the vertical face section  118  is connected to a front edge of the upper face section  112 . 
     A flange section  114  is formed to the upper face section  112  so as to be disposed below the lamp sections  102  of the headlamps  100  in a state in which the bumper  110  is attached to the bumper retainers  10 . The plate thickness direction of the flange section  114  is along the bumper vertical direction. Moreover, a connection section  116  is formed to the upper face section  112  so as to be disposed between the flange section  114  and the vertical face section  118 . The plate thickness direction of the connection section  116  is inclined forwards with respect to the bumper vertical direction. 
     An end face  114   a  of the flange section  114  faces rearward in the bumper front-rear direction and extends along the bumper width direction. 
     Furthermore, a pair of through holes  120  are formed so as penetrate through the flange section  114  in the vertical direction of the bumper (hereafter “bumper vertical direction”) and be separated in the bumper width direction. The through holes  120  are rectangular shaped when viewed along the bumper vertical direction and extend in the bumper width direction. 
     Bumper Retainers  10   
     The bumper retainers  10  are each integrally molded using a resin material (for example, a polyacetal resin) at a thickness of, for example from 1 mm to 3 mm. As illustrated in  FIG. 11 , the bumper retainers  10  are provided in pairs separated from each other in the bumper width direction, and a pair of the bumper retainers  10  are formed that are symmetrical to each other in the bumper width direction. As stated above, the pair of bumper retainers  10  are arranged below the headlamps  100 . Description follows regarding one of the bumper retainers  10 . 
     As illustrated in  FIG. 1  and  FIG. 8 , the bumper retainers  10  extend in the bumper width direction and each include a body section  20  configuring a framework section of the bumper retainers  10 , and lower restricting portions  30  restricting a rearward position of the bumper  110  in the bumper front-rear direction. Details regarding the lower restricting portions  30  will be described later. 
     As illustrated in  FIG. 1 , the body section  20  includes a frame  22  having a frame shape extending in the bumper width direction as viewed from the bumper front-rear direction, and plural partition portions  24  partitioning the interior of the frame  22  in the bumper width direction. Furthermore, the body section  20  includes wall portions  26  configuring walls at the bumper front-rear direction rear of spaces  24   a  partitioned by the partition portions  24 . 
     Frame  22   
     As illustrated in  FIG. 1 , the frame  22  includes an opposing section  40  opposing the upper face section  112  of the bumper  110  (see  FIG. 8 ) in the bumper vertical direction. The opposing section  40  is plate shaped with a plate thickness direction along the bumper vertical direction and extends along the bumper width direction. Moreover, support portions  42  are connected to the opposing section  40  for supporting the upper face section  112  of the bumper  110  from a back face  112   b  of the upper face section  112  (see  FIG. 7 ). First upper restricting portions  50  (see  FIG. 5A ) are also connected to the opposing section  40  for restricting a bumper front-rear direction rearward position of the bumper  110  disposed at a reference position such that the back face  112   b  of the upper face section  112  is supported by the support portions  42 . Second upper restricting portions  60  (see  FIG. 4A ) are also connected to the opposing section  40  for restricting a bumper front-rear direction forward position of the bumper  110  disposed at the reference position. 
     Reference here to “bumper front-rear direction rearward” is a direction to attach the bumper  110  to the vehicle body. Thus hereafter “bumper front-rear direction rearward” is sometimes referred to as the “attachment direction”. Moreover, “bumper front-rear direction forward” is a direction to detach the bumper  110  from the vehicle body. Thus hereafter “bumper front-rear direction forward” is sometimes referred to as the “detachment direction”. 
     Furthermore, the “reference position of the bumper  110 ” is a position of the bumper  110  when design values are achieved for the relative position between the bumper  110  and the bumper retainers  10 . In other words, the “reference position of the bumper  110 ” is a position of the bumper  110  when design values are also achieved for the relative position between the bumper  110  and the vehicle body. 
     Note that detailed description is given later regarding the support portions  42 , the first upper restricting portions  50 , and the second upper restricting portions  60 . 
     Partition Portions  24   
     As illustrated in  FIG. 1 , the partition portions  24  partition the interior of the frame  22  in the bumper width direction. 
     Specifically, the partition portions  24  are plate shaped with a plate thickness direction along the bumper width direction, and there are five of the partition portions  24  provided so as to be separated from each other in the bumper width direction. A bumper front-rear direction forward portion of each of the partition portions  24  has a circular arc convex shape, as viewed along the bumper width direction. The interior of the frame  22  is partitioned into six of the spaces  24   a  by the five partition portions  24 . 
     Wall Portions  26   
     As illustrated in  FIG. 1 , the wall portions  26  configure walls at the bumper front-rear direction rear of the spaces  24   a  partitioned by the partition portions  24 . 
     Specifically, the wall portions  26  configure walls at the bumper front-rear direction rear of two of the spaces  24   a  formed at the inside in the bumper width direction and walls at the bumper front-rear direction rear of two of the spaces  24 a formed at the outside in the bumper width direction. 
     There are four of these wall portions  26  provided in a plate shaped with a plate thickness direction along the bumper front-rear direction. Furthermore, through holes  26   a  are formed in the wall portion  26  that is the second from the inside in the bumper width direction and in the wall portion  26  that is the second from the outside in the bumper width direction, with the through holes  26   a  aligned with the pair of through holes  104   a  (see  FIG. 8 ) formed in the attachment section  104  of the headlamps  100  when viewed along the bumper front-rear direction. 
     Note that “inside in the bumper width direction” refers to a central portion side of the bumper  110  in the bumper width direction, and “outside in the bumper width direction” refers to a side away from the central portion of the bumper  110  in the bumper width direction. 
     In this configuration, as illustrated in  FIG. 8  and  FIG. 9 , an operative inserts leading end portions of anchor type clips  140  through the through holes  26   a  of the wall portions  26  of the bumper retainers  10  and through the through holes  104   a  (see  FIG. 8 ) of the attachment section  104  of the headlamps  100 . The bumper retainers  10  are thereby attached to the headlamps  100 . 
     Relevant Configuration 
     Description now follows regarding the lower restricting portions  30 , the support portions  42 , the first upper restricting portions  50 , and the second upper restricting portions  60 . 
     Lower Restricting Portions  30   
     There are two of the lower restricting portions  30  illustrated in  FIG. 1  provided in a row along the bumper width direction. One of the lower restricting portions  30  is arranged in the space  24   a  that is the third from the bumper width direction outside and another of the lower restricting portions  30  is arranged in the space  24   a  that is the fourth from the bumper width direction outside. 
     As illustrated in  FIG. 1  and  FIG. 6A , the lower restricting portions  30  have a wavy shape undulating in the detachment direction as viewed along the bumper vertical direction, and both ends of the lower restricting portions  30  are connected to the partition portions  24  of the body section  20 . Furthermore, each of the lower restricting portions  30  includes three projections  30   a,    30   b,    30   c  projecting out in the detachment direction. The three projections  30   a,    30   b,    30   c  are arranged side-by-side in this sequence along the bumper width direction. 
     The projections  30   b  project out more in the detachment direction than the projections  30   a,    30   c,  and the leading ends of the projections  30   b  make contact with a back face  118   b  of the vertical face section  118  of the bumper  110  disposed at the reference position. In other words, the leading ends of the projections  30   b  of the lower restricting portions  30  in a state not loaded with external force (unloaded state) make contact with a back face  118   b  of the vertical face section  118  of the bumper  110  disposed at the reference position. One end of the projections  30   a  and one end of the projections  30   c  are connected to respective plate faces of the partition portions  24 . The lower restricting portions  30  are thereby supported by the partition portions  24  of the body section  20  in a double supported state. 
     Support Portions  42   
     As illustrated in  FIG. 1 , there are plural of the support portions  42  provided so as to be connected to the opposing section  40  of the frame  22 . There are five of the support portions  42  arranged at a bumper width direction outside portion of the opposing section  40  and there are five of the support portions  42  arranged at a bumper width direction inside portion of the opposing section  40 . These support portions  42  are separated from each other in the bumper width direction. 
     The support portions  42  are plate shaped with a plate thickness direction along the bumper width direction, and each have a trapezoidal shape viewed along the bumper width direction, as illustrated in  FIG. 7 . An upper end face  42   a  of each of the support portions  42  contacts the back face  112   b  of the flange section  114  of the upper face section  112 . 
     Due to the upper end faces  42   a  of the plural support portions  42  making contact with the back face  112   b  of the flange section  114  of the upper face section  112  in this manner, the plural support portions  42  respectively support the upper face section  112  of the bumper  110  from the back face  112   b.    
     First Upper Restricting Portions  50   
     As illustrated in  FIG. 1 , there are plural of the first upper restricting portions  50  provided so as to be connected to the opposing section  40  of the frame  22 . There are two of the first upper restricting portions  50  arranged at a bumper width direction outside portion of the opposing section  40  and there are two of the first upper restricting portions  50  arranged at a bumper width direction inside portion of the opposing section  40 . The first upper restricting portions  50  are separated from each other in the bumper width direction. Moreover, the support portions  42  are arranged in the bumper width direction so as to be disposed a both sides of the first upper restricting portions  50 . In other words, each of the first upper restricting portions  50  is disposed at the bumper width direction between a pair of the support portions  42 . 
     As illustrated in  FIG. 2  and  FIG. 5A , the first upper restricting portions  50  each include a contact portion  52  to make contact with the end face  114   a  of the flange section  114  of the upper face section  112 , and a cantilever portion  54  of cantilevered shape that has one end connected to the contact portion  52  and another end connected to the opposing section  40 . 
     The contact portion  52  extends in the bumper vertical direction and has a rectangular shaped cross-section, with a contact face  52   a  formed on the contact portion  52  to make contact with the end face  114   a  of the flange section  114 . The cantilever portion  54  extends in the attachment direction, with a bottom end of the contact portion  52  connected to a rear end of the cantilever portion  54  and the opposing section  40  of the frame  22  connected to the front end of the cantilever portion  54 . 
     Second Upper Restricting Portions  60   
     As illustrated in  FIG. 1 , there are plural of the second upper restricting portions  60  connected to the opposing section  40  of the frame  22 . One of the second upper restricting portions  60  is arranged at a bumper width direction outside portion of the opposing section  40 , and one of the second upper restricting portions  60  is arranged at a bumper width direction inside portion of the opposing section  40 . The second upper restricting portions  60  are each disposed at the bumper width direction between a pair of the first upper restricting portions  50 . A support portion  42 , a first upper restricting portion  50 , a support portion  42 , a second upper restricting portion  60 , a support portion  42 , a first upper restricting portion  50 , and a support portion  42  are arranged side-by-side in this sequence along the bumper width direction. 
     As illustrated in  FIG. 2  and  FIG. 4A , each of the second upper restricting portions  60  includes an engaging claw  62  for insertion into the through hole  120  formed in the flange section  114  of the upper face section  112  so as to make contact with an edge face  120   a  of the through hole  120  and to engage with the through hole  120 . Moreover, each of the second upper restricting portions  60  includes a cantilever portion  64  of a cantilevered shape having one end connected to the engaging claw  62  and another end connected to the opposing section  40 . The cantilever portion  64  is an example of a second cantilever portion. 
     The engaging claw  62  extends in the bumper vertical direction. The engaging claw  62  is formed with a contact face  62   a  facing in the attachment direction to make contact with the edge face  120   a  of the through hole  120 , and with an inclined face  62   b  facing diagonally upward with respect to the detachment direction. The cantilever portion  64  extends along the detachment direction, and a lower end of the engaging claw  62  is connected to a front end of the cantilever portion  64 , and the opposing section  40  of the frame  22  is connected to the rear end of the cantilever portion  64 . 
     Operation 
     Next, description follows regarding operation and the like of the bumper retainers  10 . 
     As illustrated in  FIG. 9  and  FIG. 10 , an operative moves the bumper  110 , which is detached from a vehicle body, in the attachment direction such that the upper face section  112  of the bumper  110  is supported from the back face  112   b  by the support portions  42  of the bumper retainers  10  attached to the attachment section  104  of the headlamps  100 . 
     As illustrated in  FIG. 3A , when this is performed the end face  114   a  of the bumper  110  makes contact in the attachment direction with the inclined faces  62   b  of the engaging claws  62  of the second upper restricting portions  60 . Then, as illustrated in  FIG. 3B , when the bumper  110  is moved further in the attachment direction, the cantilever portion  64  of the second upper restricting portions  60  undergoes resilient deformation, and the engaging claw  62  moves downward. Moreover, as illustrated in  FIG. 3C , when the bumper  110  is moved further in the attachment direction, the cantilever portions  64  of each of the second upper restricting portions  60  rebound resiliently, the engaging claw  62  is inserted into the through hole  120 , and the contact face  62   a  of the engaging claw  62  makes contact in the attachment direction with the edge face  120   a  of the through hole  120 . The engaging claw  62  thereby engages with the through hole  120 . The second upper restricting portions  60  thereby restrict the position of the bumper  110  in the detachment direction. 
     As illustrated in  FIG. 7 , in this state the upper end face  42   a  of the support portions  42  makes contact with the back face  112   b  of the flange section  114  of the upper face section  112 . Due to the upper end face  42   a  of the support portions  42  making contact with the back face  112   b  of the flange section  114  of the upper face section  112  in this manner, the support portions  42  support the upper face section  112  of the bumper  110 , and the bumper  110  is disposed at the reference position. 
     As illustrated in  FIG. 6A , in a state in which the bumper  110  is disposed at the reference position, the leading ends of the projections  30   b  of the lower restricting portions  30  make contact in the detachment direction with the back face  118   b  of the vertical face section  118  of the bumper  110 . The lower restricting portions  30  thereby restrict the position of the bumper  110  in the attachment direction. 
     Moreover, as illustrated in  FIG. 5A , in a state in which the bumper  110  is disposed at the reference position, the contact faces  52   a  of the contact portions  52  of the first upper restricting portions  50  make contact in the detachment direction with the end face  114   a  of the flange section  114  of the upper face section  112 . The first upper restricting portions  50  thereby restrict the position of the bumper  110  in the attachment direction. 
     Next, description follows regarding a case in which the operative moves the bumper  110 , which is detached from the vehicle body, too far when moving the bumper  110  in the attachment direction. In other words, a case will be described in which the bumper  110  has been moved further in the attachment direction than the reference position. 
     As illustrated in  FIG. 6B , when the bumper  110  moves further in the attachment direction than the reference position, the projections  30   b  of the lower restricting portions  30  are pressed in the attachment direction by the bumper  110 , and the lower restricting portions  30  having a wavy shape undergo resilient deformation by changing amplitude. Specifically, due to the projections  30   b  being pressed in the attachment direction the projections  30   a,    30   c  are squashed in the attachment direction and tilt toward the projection  30   b  side. The lower restricting portions  30  accordingly undergo resilient deformation without spreading out wider in the bumper width direction. 
     Moreover, as illustrated in  FIG. 5B , when the bumper  110  is moved further in the attachment direction with respect to the reference position, the cantilever portions  54  of the first upper restricting portions  50  undergo resilient deformation, and the contact portion  52  moves downward while tilting. As illustrated in  FIG. 4B , the cantilever portions  64  of the second upper restricting portions  60  also undergo resilient deformation, and the engaging claws  62  move downward while tilting. 
     The lower restricting portions  30  rebound resiliently when the operative releases the force that was moving the bumper  110  in the attachment direction. The resiliently rebounding lower restricting portions  30  impart the bumper  110  with motive force to move the bumper  110  to the reference position. 
     As illustrated in  FIG. 6A , the cantilever portions  54  of the first upper restricting portions  50  rebound resiliently due to the bumper  110  moving to the reference position, and, as illustrated in  FIG. 5A , the contact faces  52   a  of the contact portions  52  make contact with the end face  114   a  of the flange section  114  of the upper face section  112 . Furthermore, the cantilever portions  64  of the second upper restricting portions  60  rebound resiliently, the engaging claws  62  are inserted into the through hole  120  as illustrated in  FIG. 4A , and the contact faces  62   a  of the engaging claws  62  make contact with the edge faces  120   a  of the through holes  120 . 
     Next, description follows regarding a case in which the bumper  110  disposed at the reference position receives an external shock. 
     When the bumper  110  receives an external shock, the bumper  110  tends to move further in the attachment direction than the reference position. As illustrated in  FIG. 5B , when the bumper  110  moves further in the attachment direction (toward the vehicle body side) than the reference position, the cantilever portions  54  of the first upper restricting portions  50  undergo resilient deformation, and the contact portions  52  move downward while tilting. The first upper restricting portions  50  absorb energy of the external shock received by the bumper  110  by the cantilever portions  54  undergoing resilient deformation. As illustrated in  FIG. 4B , the cantilever portions  64  of the second upper restricting portions  60  also undergo resilient deformation, and the engaging claws  62  moves downward while tilting. The second upper restricting portions  60  absorb energy of the external shock received by the bumper  110  by the cantilever portions  64  undergoing resilient deformation. 
     In cases in which the shock force on the bumper  110  is a predetermined force or greater (cases in which motive force acting on the bumper  110  is the predetermined force or greater), as illustrated in  FIG. 5C , the bumper  110  is moved further in the attachment direction, and the cantilever portions  54  of the first upper restricting portions  50  undergo further resilient deformation. The contact faces  52   a  of the contact portions  52  separate from the end face  114   a,  and the first upper restricting portions  50  release positional restriction of the bumper  110 . 
     As illustrated in  FIG. 4C , in cases in which the shock force on the bumper  110  is the predetermined force or greater (cases in which the motive force acting on the bumper  110  is the predetermined force or greater), the cantilever portions  64  of the second upper restricting portions  60  undergo further resilient deformation, and the engaging claws  62  move downward while tilting. Due to the cantilever portions  64  resiliently deforming, the engaging claws  62  exit the through holes  120 , engagement between the engaging claws  62  and the through holes  120  is released, and the second upper restricting portions  60  release positional restriction of the bumper  110 . 
     Advantageous Effects 
     As described above, in the bumper retainers  10  the contact faces  52   a  of the contact portions  52  of the first upper restricting portions  50  make contact with the end face  114   a  of the bumper  110 , and the first upper restricting portions  50  of the bumper retainers  10  restrict the attachment direction position of the bumper  110  disposed at the reference position (see  FIG. 5A ). Moreover, the contact faces  62   a  of the engaging claws  62  of the second upper restricting portions  60  of the bumper retainers  10  make contact with the edge faces  120   a  of the through holes  120  of the bumper  110 , and due to the engaging claws  62  engaging with the through holes  120  the second upper restricting portions  60  restrict the detachment direction position of the bumper  110  disposed at the reference position (see  FIG. 4A ). 
     In this manner the bumper retainers  10  enable the position of the bumper  110  to be restricted in both the attachment direction and the detachment direction of the bumper  110 , without using a fastener. 
     Moreover, in cases in which the bumper  110  receives an external shock, the bumper  110  tends to move further in the attachment direction than the reference position. When the bumper  110  moves further in the attachment direction (toward the vehicle body side) than the reference position the cantilever portions  54  of the first upper restricting portions  50  undergo resilient deformation, and the contact portions  52  move downward while tilting (see  FIG. 5B ). Moreover, in cases in which a shock force on the bumper  110  is the predetermined force or greater, the bumper  110  moves further in the attachment direction, and the cantilever portions  54  of the first upper restricting portions  50  undergo further resilient deformation. The contact faces  52   a  of the contact portions  52  separate from the end face  114 a, and the first upper restricting portions  50  release positional restriction of the bumper  110  (see  FIG. 5C ). 
     Thus due to the above action, without using a fastener the bumper retainers  10  restrict the position of the bumper in both the attachment direction and the detachment direction of the bumper  110 , and enable the first upper restricting portions  50  restricting the position of the bumper  110  in the attachment direction to be suppressed from breaking when the bumper  110  is moved in the attachment direction. 
     Moreover in the bumper retainers  10 , due to the cantilever portions  54  of the first upper restricting portions  50  undergoing resilient deformation, the first upper restricting portions  50  are able to absorb the energy of an external shock received by the bumper  110 . 
     Moreover, in the bumper retainers  10 , as described above, due the cantilever portions  54  of the first upper restricting portions  50  undergo resilient deformation, the energy of an external shock received by the bumper  110  is absorbed. Thereby, for example, the cantilever portions  54  are able to undergo more effective resilient deformation compared to cases in which a portion supported at both ends undergoes resilient deformation. 
     Moreover, in cases in which the bumper  110  receives an external shock, the bumper  110  tends to move further in the attachment direction than the reference position. When the bumper  110  moves further in the attachment direction (toward the vehicle body side) than the reference position, the cantilever portions  64  of the second upper restricting portions  60  undergo resilient deformation, and the engaging claws  62  move downward while tilting (see  FIG. 4B ). Moreover, in cases in which a shock force on the bumper  110  is the predetermined force or greater, the bumper  110  moves even further in the attachment direction, and the cantilever portions  64  of the second upper restricting portions  60  undergo further resilient deformation. The engaging claws  62  then exit the through holes  120 , engagement between the engaging claws  62  and the through holes  120  is released, and the second upper restricting portions  60  release positional restriction of the bumper  110  (see  FIG. 4C ). 
     Thus in the bumper retainers  10 , due to the cantilever portions  64  of the second upper restricting portions  60  resiliently deforming, the second upper restricting portions  60  are able to absorb energy of the external shock received by the bumper  110 . Moreover, in cases in which the shock force on the bumper  110  is the predetermined force or greater, the engaging claws  62  exit the through holes  120  and engagement between the engaging claws  62  and the through holes  120  is released such that the second upper restricting portions  60  release the positional restriction of the bumper  110 . This thereby enables the second upper restricting portions  60  to be suppressed from breaking. 
     Moreover, in the bumper retainers  10 , as described above, due to the cantilever portions  64  of the second upper restricting portions  60  resiliently deforming, the energy of an external shock received by the bumper  110  is absorbed. Thus, for example, the cantilever portions  64  are able to undergo more effective resilient deformation than cases in which a portion supported at both ends undergoes resilient deformation. 
     Moreover, in the bumper retainers  10 , the projections  30   b  of the lower restricting portions  30  make contact with the back face  118   b  of the vertical face section  118  of the bumper  110  disposed at the reference position, and the lower restricting portions  30  restrict the attachment direction position of the bumper  110  disposed at the reference position (see  FIG. 6A ). 
     Furthermore, sometimes the detached bumper  110  is moved too far in the attachment direction when an operative moves the bumper  110  in the attachment direction such that the upper face section  112  of the bumper  110  is supported by the support portions  42  of the bumper retainers  10 . When the bumper  110  is moved further in the attachment direction than the reference position, the lower restricting portions  30  undergo resilient deformation. Moreover, when the motive force acting on the bumper  110  is released, the lower restricting portions  30  rebound resiliently and impart a motive force on the bumper  110  so as to move the bumper  110  to the reference position. Thus in this manner a bumper can be moved to the reference position easily even in cases in which the bumper  110  has been moved further in the attachment direction than the reference position. 
     Moreover, in the bumper retainers  10 , the lower restricting portions  30  are connected at both ends to the body section  20  and are formed in a wavy shape undulating in the detachment direction. Due to having such a wavy shape, the lower restricting portions  30  are able to undergo resilient deformation by changing in amplitude under input of external force (see  FIG. 6B ). 
     Moreover, in the bumper retainers  10 , each of the lower restricting portions  30  includes the three projections  30   a,    30   b,    30   c,  with the projection  30   b  interposed in the bumper width direction between the projection  30   a  and the projection  30   c  and projecting out further in the detachment direction than the projections  30   a,    30   c.  Thus when the bumper  110  disposed at the reference position is moved in the attachment direction, the projections  30   b  of the lower restricting portions  30  are pressed by the bumper  110 , and the projections  30   a,    30   c  are squashed in the bumper front-rear direction and respectively tilt toward the projections  30   b  side (see  FIG. 6B ). In this manner the lower restricting portions  30  are able to resiliently deform in a state in which spreading out wider in the bumper width direction is suppressed. 
     Moreover, in the bumper retainers  10  a support portion  42 , a first upper restricting portion  50 , a support portion  42 , a second upper restricting portion  60 , a support portion  42 , a first upper restricting portion  50 , and a support portion  42  are arranged side-by-side in this sequence along the bumper width direction (see  FIG. 2 ). Due to being arranged side-by-side in this sequence, the vertical direction position of the upper face section  112  of the portion making contact with the contact portions  52  and the first upper restricting portions  50  can be suppressed from varying. Furthermore, due to being arranged side-by-side in this manner, the vertical direction position of the upper face section  112  of the portion making contact with the engaging claws  62  of the second upper restricting portions  60  can be suppressed from varying. 
     Moreover, in the bumper retainers  10  the second upper restricting portions  60  are interposed in the bumper width direction between a pair of the first upper restricting portions  50 . Due to such an arrangement, the end face  114   a  of the bumper  110  can be suppressed from being angled with respect to the design aims when viewed from above. 
     Moreover, in the bumper retainers  10 , there are plural of the support portions  42  provided, with the support portions  42  separated from each other in the bumper width direction. The enables easy adjustment (tuning) of the shape of the support portions  42  to change the degree of contact between the support portions  42  and the back face  112 b. 
     Moreover, in the bumper retainers  10 , the upper end face  42   a  of the support portions  42  extends in the bumper front-rear direction. Thus when an operative moves the bumper  110  in the attachment direction, movement of the bumper  110  can be suppressed from being impeded by the support portions  42 . 
     Second Exemplary Embodiment 
     Description follows regarding an example of a bumper retainer  210  according to a second exemplary embodiment of the present disclosure, with reference to  FIG. 12A  to  FIG. 12C ,  FIG. 13A  and  FIG. 13B . Note that description regarding the second exemplary embodiment will focus on portions thereof that differ from the first exemplary embodiment. 
     Lower Restricting Portions  230   
     The bumper retainer  210  according to the second exemplary embodiment of the present disclosure is provided with lower restricting portions  230  instead of the lower restricting portions  30 . As illustrated in  FIG. 13A , the lower restricting portions  230  are L-shaped including bent portions  230   a  as viewed along the bumper vertical direction. 
     The bent portions  230   a  of the lower restricting portions  230  are formed at the front ends of the lower restricting portions  230 , and the bent portions  230   a  make contact with the back face  118   b  of the vertical face section  118  of the bumper  110  disposed at the reference position. In other words, in a state not loaded with external force (unloaded state) the bent portions  230   a  of the lower restricting portions  230  make contact with the back face  118   b  of the vertical face section  118  of the bumper  110  disposed at the reference position. The lower restricting portions  230  are connected at one end to the partition portions  24  of the body section  20 . In this manner the lower restricting portions  230  are supported by the body section  20  in a cantilevered state. 
     First Upper Restricting Portions  250   
     The bumper retainer  210  according to the second exemplary embodiment is provided with first upper restricting portions  250  instead of the first upper restricting portions  50 . As illustrated in  FIG. 12A , each of the first upper restricting portions  250  includes a contact portion  252  that makes contact with the end face  114   a  of the flange section  114 , and a cantilever portion  254  having a cantilevered shape that has one end connected to the contact portion  252  and another end connected to the opposing section  40  of the body section  20 . 
     A contact face  252   a  is formed to the contact portion  252  and makes contact with the end face  114   a  of the flange section  114 . The contact face  252   a  faces diagonally upward with respect to the detachment direction. 
     The cantilever portion  254  extends along the detachment direction, with the contact portion  252  connected to the front end of the cantilever portion  254  and the opposing section  40  of the body section  20  connected to the rear end of the cantilever portion  254 . 
     Operation 
     Next, description follows regarding the operation and the like of the bumper retainers  210 . 
     An operative moves the bumper  110 , which is detached from the vehicle body, in the attachment direction, and the upper face section  112  of the bumper  110  is supported from below by the support portions  42  of the bumper retainers  10 . The bumper  110  is thereby disposed at the reference position. 
     As illustrated in  FIG. 13A , in a state in which the bumper  110  is disposed at the reference position, the bent portions  230   a  of the lower restricting portions  230  make contact in the detachment direction with the back face  118   b  of the vertical face section  118  of the bumper  110 . 
     Moreover as illustrated in  FIG. 12A , from a state in which the bumper  110  is disposed at the reference position, the contact faces  252   a  of the contact portions  252  of the first upper restricting portions  250  make contact in the detachment direction with the end face  114   a  of the flange section  114 . 
     Next, description follows regarding a case in which an operative moves the bumper  110 , which is detached from the vehicle body, too far when moving the bumper  110  in the attachment direction. In other words, this describes a case in which the bumper  110  has been moved further in the attachment direction than the reference position. 
     When the bumper  110  is moved further in the attachment direction than the reference position, as illustrated in  FIG. 13B , the bent portions  230   a  of the lower restricting portions  230  are pressed by the bumper  110  in the attachment direction, and the lower restricting portions  230  undergo resilient deformation. Specifically, the lower restricting portions  230  flex about their supported ends due to the bent portions  230   a  being pressed in the attachment direction. The lower restricting portions  230  of a cantilevered shape thereby undergo resilient deformation. 
     Moreover, when the bumper  110  moves further in the attachment direction than the reference position, as illustrated in  FIG. 12B , the cantilever portions  254  of the first upper restricting portions  250  undergo resilient deformation, and the contact portions  252  move downward while tilting. 
     Furthermore, when the operative releases force that was moving the bumper  110  in the attachment direction, the lower restricting portions  230  rebound resiliently. The resiliently rebounding lower restricting portions  230  impart the bumper  110  with motive force to move the bumper  110  to the reference position. 
     By the bumper  110  moving to the reference position, the cantilever portions  254  of the first upper restricting portions  250  rebound resiliently, and the contact faces  252   a  of the contact portions  252  make contact with the end face  114   a  of the flange section  114 , as illustrated in  FIG. 12A . 
     Next, description follows regarding a case in which the bumper  110  disposed at the reference position receives an external shock. 
     In cases in which the bumper  110  receives an external shock, the bumper  110  is moved further in the attachment direction than the reference position. When the bumper  110  moves further in the attachment direction than the reference position, as illustrated in  FIG. 12B , the cantilever portions  254  of the first upper restricting portions  250  undergo resilient deformation, and the contact portions  252  move downward while tilting. Due to the cantilever portions  254  undergo resilient deformation, the first upper restricting portions  250  absorb energy of an external shock received by the bumper  110 . 
     In cases in which the shock force on the bumper  110  is the predetermined force or greater, as illustrated in  FIG. 12C , the bumper  110  moves further in the attachment direction, and the cantilever portions  254  of the first upper restricting portions  250  undergo further resilient deformation. The contact faces  252   a  of the contact portions  252  then separate from the end face  114   a,  and the first upper restricting portions  250  release positional restriction of the bumper  110 . 
     Advantageous Effects 
     As described above, in the bumper retainers  210  the contact faces  252   a  of the contact portions  252  of the first upper restricting portions  250  make contact with the end face  114   a  of the bumper  110 . Thereby the first upper restricting portions  250  of the bumper retainer  210  are able to restrict the attachment direction position of the bumper  110  disposed at the reference position (see  FIG. 12A ). 
     Moreover, in cases in which the bumper  110  receives an external shock, the bumper  110  is moved further in the attachment direction than the reference position. When the bumper  110  moves further in the attachment direction (toward the vehicle body side) than the reference position, the cantilever portions  254  of the first upper restricting portions  250  undergo resilient deformation, and the contact portions  252  move downward while tilting (see  FIG. 12B ). Moreover, in cases in which the shock force on the bumper  110  is the predetermined force or greater, the bumper  110  moves even further in the attachment direction, and the cantilever portions  254  of the first upper restricting portions  250  undergo further resilient deformation. The contact faces  252   a  of the contact portions  252  then separate from the end face  114   a,  and the first upper restricting portions  250  release positional restriction of the bumper  110  (see  FIG. 12C ). 
     Due to the cantilever portions  254  of the first upper restricting portions  250  resiliently deforming in this manner the first upper restricting portions  250  are able to absorb energy of the external shock received by the bumper  110 . Moreover, in cases in which the shock force on the bumper  110  is the predetermined force or greater, the contact faces  252   a  of the contact portions  252  separate from the end face  114   a,  and the first upper restricting portions  250  release positional restriction of the bumper  110 . This thereby enables the first upper restricting portions  250  to be suppressed from breaking. 
     In the bumper retainers  210 , as stated above, energy of the external shock received by the bumper  110  is absorbed by resilient deformation of the cantilever portions  254  of the first upper restricting portions  250 . Thereby, for example, the cantilever portions  254  are able to resiliently deform more effectively than in cases in which a portion supported at two ends resiliently deforms. 
     Moreover, in the bumper retainers  210 , the bent portions  230   a  of the lower restricting portions  230  make contact with the back face  118   b  of the vertical face section  118  of the bumper  110  disposed at the reference position, and the lower restricting portions  230  restrict the attachment direction position of the bumper  110  disposed at the reference position (see  FIG. 13A ). Furthermore, sometimes the bumper  110 , which is detached from the vehicle body, is moved too far in the attachment direction when an operative moves the bumper  110  in the attachment direction. When the bumper  110  disposed at the reference position is moved in the attachment direction, the lower restricting portions  230  undergo resilient deformation. Moreover, when the motive force acting on the bumper  110  is released, the lower restricting portions  230  rebound resiliently and impart a motive force on the bumper  110  so as to move the bumper  110  to the reference position. 
     In this manner the resiliently deformed lower restricting portions  230  are able, by rebounding resiliently, to easily move the bumper  110  to the reference position even in cases in which the bumper  110  has been moved too far in the attachment direction. 
     Note that although detailed description has been given regarding specific exemplary embodiments of the present disclosure, the present disclosure is not limited by such exemplary embodiments, and it will be clear to a person of ordinary skill in the art that various other embodiments are implementable within a range of the present disclosure. For example, although in the exemplary embodiment described above the bumper retainers  10 ,  210  are employed to support a front bumper  110 , they may also be employed to support a rear bumper. 
     Moreover, although in the exemplary embodiment described above the bumper retainers  10 ,  210  are employed to support portions at both ends of the bumper  110  in the bumper width direction, they may also be employed to support a portion toward the center of the bumper  110 . 
     Moreover, although in the exemplary embodiment described above the cantilever portions  54 ,  64 ,  254  extend along the bumper front-rear direction, they may extend along the bumper vertical direction. The cantilever portions may flex to absorb energy of the external shock received by the bumper  110 . 
     Moreover, although in the exemplary embodiment described above the cantilever portions  54 ,  64 ,  254 , which undergo resilient deformation to absorb the energy of the external shock received by the bumper  110  by flexing, have a cantilevered shape, they may, for example, be supported at both ends. It is sufficient for the cantilever portions  54 ,  64 ,  254  to undergo resilient deformation to absorb the external shock received by the bumper  110  by flexing. However, in such cases, advantageous effects due to having a cantilevered shape are no longer exhibited. 
     The following supplements are further disclosed in relation to the above exemplary embodiments. 
     Supplement 1 
     A bumper attachment retainer including: 
     a support portion configured to support, from a back face of a bumper, an upper face section of the bumper at which an upper face of the bumper is formed, the bumper having a U-shaped cross-section; 
     a first upper restricting portion configured to make contact with the upper face section of the bumper, which is disposed at a reference position with the upper face section supported by the support portion, to restrict a position of the bumper in an attachment direction, and to release positional restriction of the bumper in a case in which a motive force in the attachment direction acting on the bumper disposed at the reference position is a predetermined force or greater; and 
     a second upper restricting portion configured to make contact with the upper face section of the bumper disposed at the reference position and to restrict a position of the bumper in a detachment direction. 
     According to the above configuration, the first upper restricting portion makes contact with the upper face section of the bumper disposed at the reference position with the upper face section supported by the support portion, and restricts the position of the bumper in the attachment direction. Furthermore, the second upper restricting portion makes contact with the upper face section of the bumper disposed at the reference position, and restricts the position of the bumper in the detachment direction. 
     Thus when, for example, the bumper disposed at the reference position receives an external shock, the bumper disposed at the reference position moves in the attachment direction. Then in cases in which the motive force acting in the attachment direction on the bumper disposed at the reference position is a predetermined force or greater, the first upper restricting portion releases positional restriction of the bumper. In this manner, due to the first upper restricting portion releasing positional restriction of the bumper in cases in which the motive force acting in the attachment direction on the bumper disposed at the reference position is a predetermined force or greater, the first upper restricting portion can be suppressed from breaking. 
     Thus the bumper attachment retainer is, without employing a fastener, still able to restrict the position of the bumper in both the attachment direction and the detachment direction of the bumper, and to suppress the first upper restricting portion that are restricting the position of the bumper in the attachment direction from breaking. 
     Supplement 2 
     The bumper attachment retainer of Supplement 1, wherein: 
     the first upper restricting portion includes a contact portion configured to make contact with an end face facing in the attachment direction of the upper face section; and 
     the first upper restricting portion resiliently deforms when the bumper disposed at the reference position is moved in the attachment direction, and in a case in which a motive force acting on the bumper is a predetermined force or greater, the contact portion separates from the end face and the first upper restricting portion releases the positional restriction of the bumper. 
     According to the above configuration, the contact portion of the first upper restricting portion contact and end face facing in the attachment direction of the upper face section of the bumper, and the first upper restricting portion restricts the position of the bumper in the attachment direction. 
     For example, when the bumper disposed at the reference position receives an external shock, the bumper disposed at the reference position moves in the attachment direction. When the bumper moves in the attachment direction, the contact portion is pressed in the attachment direction, and the first upper restricting portion resiliently deforms. Furthermore, in cases in which the motive force acting on the bumper is the predetermined force or greater, the contact portion separates from the end face, and the first upper restricting portion releases positional restriction of the bumper. 
     In this manner, when the bumper moves in the attachment direction, the contact portion is pressed in the attachment direction, and the first upper restricting portion resiliently deforms. Furthermore, in cases in which the motive force acting on the bumper is the predetermined force or greater, the contact portion of the first upper restricting portion separates from the end face of the bumper. 
     The first upper restricting portion is thereby able to absorb energy of the shock received by the bumper, and the first upper restricting portion can be suppressed from breaking. 
     Supplement 3 
     The bumper attachment retainer of Supplement 2, wherein the first upper restricting portion includes a cantilever portion that extends in the attachment direction with one end connected to the contact portion. 
     According to the above configuration, when the bumper disposed at the reference position is moved in the attachment direction, the cantilever portion extending in the attachment direction undergoes resilient deformation by flexing. 
     Thus, for example, the cantilever portion is able to resiliently deform more effectively than cases in which a portion supported at both ends resiliently deforms. 
     Supplement 4 
     The bumper attachment retainer of any one of Supplement 1 to Supplement 3, wherein: 
     the bumper attachment retainer further comprises a lower restricting portion configured to make contact with a back face of a vertical face section at which a vertical face of the bumper is formed and to restrict the position of the bumper in the attachment direction; and 
     the lower restricting portion is configured to undergo resilient deformation when the bumper disposed at the reference position moves in the attachment direction, and the lower restricting portion is configured to rebound resiliently when motive force acting on the bumper is released and impart the bumper with motive force to move to the reference position. 
     According to the above configuration, the lower restricting portion contacting the back face of the vertical face section of the bumper resiliently deforms when the bumper disposed at the reference position moves in the attachment direction. Furthermore, when the motive force acting on the bumper is released, the lower restricting portion rebounds resiliently and imparts the bumper with motive force to move to the reference position. 
     Thereby the bumper can easily be moved to the reference position even in cases in which the bumper disposed at the reference position has been moved in the attachment direction. 
     Supplement 5 
     The bumper attachment retainer of Supplement 4, wherein the lower restricting portion has a wavy shape undulating in the detachment direction. 
     According to the above configuration, the lower restricting portion has a wavy shape undulating in the detachment direction. In this manner, due to having a wavy shape the lower restricting portion is able to resiliently deform by changing amplitude in cases in which the bumper disposed at the reference position is moved in the attachment direction. 
     Supplement 6 
     The bumper attachment retainer of any one of Supplement 1 to Supplement 5, wherein: 
     the second upper restricting portion includes an engaging claw configured to be inserted into, and engage with, a through hole formed penetrating the upper face section in a vertical direction; and 
     the second upper restricting portion undergoes resilient deformation when the bumper disposed at the reference position moves in the attachment direction, and in a case in which a motive force acting on the bumper is a predetermined force or greater, engagement between the engaging claw and the through hole is released, and the second upper restricting portion releases positional restriction of the bumper. 
     According to the above configuration, the engaging claw of the second upper restricting portion is inserted into a through hole in the upper face section of the bumper disposed at the reference position and engages with the through hole. 
     For example, when the bumper disposed at the reference position receives an external shock, the bumper disposed at the reference position moves in the attachment direction. When the bumper moves in the attachment direction, the second upper restricting portion undergoes resilient deformation. Furthermore, in cases in which the motive force acting on the bumper is the predetermined force or greater, the engaging claw exits the through hole, engagement with the through hole is released, and the second upper restricting portion releases positional restriction of the bumper. 
     The second upper restricting portion accordingly resiliently deforms when the bumper moves in the attachment direction. Furthermore, in cases in which the motive force acting on the bumper is the predetermined force or greater, the engaging claw exits the through hole and engagement with the through hole is released. 
     Due to this the second upper restricting portion is able to absorb energy of a shock received by the bumper, and the second upper restricting portion is able to be suppressed from breaking. 
     Supplement 7 
     The bumper attachment retainer of Supplement 6, wherein the second upper restricting portion includes a second cantilever portion that extends in the detachment direction with one end connected to the engaging claw. 
     According to the above configuration, the second cantilever portion extending in the detachment direction undergoes resilient deformation by flexing when the bumper disposed in the reference position moves in the attachment direction. 
     Therefore, for example, the second cantilever portion is able to resiliently deform more effectively than in cases in which a portion supported at two ends resiliently deforms. 
     The entire content of the disclosure of Japanese Patent Application No. 2019-101503 filed on May 30, 2019 is incorporated by reference in the present specification. 
     All publications, patent applications and technical standards mentioned in the present specification are incorporated by reference in the present specification to the same extent as if each individual publication, patent application, or technical standard was specifically and individually indicated to be incorporated by reference.