JP2010155492A - Cushion for opening/closing door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the deterioration of absorption performance of impact energy when a lateral force is applied by an impact from the diagonal direction of a collision body. <P>SOLUTION: A plurality of recessed parts 50 are formed on the bottoms 40A of the screw threads 40 of a hood cushion 22. These recessed parts 50 are formed in the direction getting closer to the axis 22D of the hood cushion 22 at approximately equal intervals over the entire circumference of the hood cushion 22. Furthermore, the adjacent recessed parts 50 are connected to each other via projections 52 by smooth curve so as to be deformable to the lateral force applied in the direction intersecting the axis 22D. Thus, if the lateral force of a predetermined value or more is applied to the hood cushion 22, the mounting position of the hood cushion 22 into a through-hole 36 is structured to be displaced in the lateral force application direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an opening / closing door cushion applied to an opening / closing door such as an engine hood of an automobile, and more particularly to an opening / closing door cushion for determining a closing position of an opening / closing lid and reducing impact sound and vibration when closing the opening / closing lid.

2. Description of the Related Art Conventionally, an opening / closing door shock absorber for improving collision energy absorption performance by effectively using a gap between an opening / closing lid and an attachment member is known (see, for example, Patent Document 1). In this technology, when a hood closing direction force of a predetermined value or more acts on the hood cushion from the upper side of the vehicle body toward the lower side of the vehicle body, the screw thread on the upper side of the vehicle body of the hood cushion that contacts the peripheral edge of the screw hole of the apron upper member. However, in the order from the lower side to the upper side, the plastic deformation is performed upward starting from the thin portion formed at the root of the screw thread. By this plastic deformation, the hood cushion moves downward with respect to the attachment portion of the apron upper member, and the protruding height of the protruding portion changes. Moreover, the screw thread is plastically deformed, so that the collision energy when the collision body collides with the hood is absorbed.
JP 2006-159987 A

  However, in this door cushion, when a lateral force is applied due to the collision of the collision body from an oblique direction, the load is directed from the upper side of the vehicle body along the axis of the door cushion to the lower side of the vehicle body. As compared with the case where the screw acts, the plastic deformation of the screw thread hardly occurs. For this reason, the absorption performance of collision energy falls.

  In view of the above facts, the present invention has an object to provide a door cushion that can suppress a decrease in collision energy absorption performance when a lateral force is applied due to a collision of a collision body from an oblique direction. .

  The present invention according to claim 1 is screwed into a perforated mounting portion provided in either one of the opening / closing door and the portion closed by the opening / closing door, and by changing the screwing amount, In the opening / closing door cushion which can elastically support either the opening / closing door or the portion closed by the opening / closing door by the protruding portion, the protrusion height of the protruding portion can be adjusted at the bottom of the screw groove. When a lateral force of a predetermined value or more is applied to the projecting portion while being supported by the mounting portion, the bottom portion of the screw groove is deformed and the mounting position of the mounting portion to the hole is the lateral direction. It has weak part formation means for displacing to the direction where force acts.

  When a lateral force of a predetermined value or more is applied from the opening / closing door to the protrusion of the opening / closing door cushion attached to the attachment portion, the bottom portion of the screw groove in which the fragile portion forming means is formed is deformed, and The mounting position of the opening / closing door cushion in the hole is displaced in the direction in which the lateral force acts. As a result, the gap between the bottom part of the screw groove on the side on which the lateral force acts in the opening / closing door cushion and the mounting portion is enlarged, and a part of the opening / closing door cushion is dropped downward from this gap. For this reason, when a lateral force is applied by the collision of the collision body from an oblique direction, it is possible to suppress a decrease in collision energy absorption performance.

  According to a second aspect of the present invention, in the open / close door cushion according to the first aspect, the fragile portion forming means is a plurality of concave portions formed in a circumferential direction at a bottom portion of the screw groove. .

  In order to form a plurality of recesses in the circumferential direction at the bottom of the screw groove of the opening / closing door cushion to form the fragile portion forming means, when a lateral force acts due to a collision from an oblique direction of the collision body, the collision energy Decrease in absorption performance can be suppressed.

  According to a third aspect of the present invention, in the open / close door cushion according to the second aspect, a slit is formed along a circumferential direction in a convex portion excluding the plurality of concave portions at the bottom of the screw groove. .

  Since a slit is formed along the circumferential direction in the convex portion excluding the plurality of concave portions at the bottom portion of the screw groove of the door cushion, the convex portion at the bottom portion of the screw groove in which the slit is formed is further deformed by a lateral force. It becomes easy. As a result, when a lateral force is applied due to the collision of the collision body from an oblique direction, it is possible to further suppress a decrease in collision energy absorption performance.

  According to a fourth aspect of the present invention, in the opening / closing door cushion according to the first aspect, the fragile portion forming means is a slit continuously formed in a part of a bottom portion of the screw groove.

  Since the slit is continuously formed at a part of the bottom of the screw groove of the door cushion to form the weakened portion forming means, the collision energy is absorbed when a lateral force is applied by the collision of the collision body from an oblique direction. A decrease in performance can be suppressed.

  According to a fifth aspect of the present invention, in the open / close door cushion according to the first aspect, the fragile portion forming means is a hole formed along the axis of the projecting portion, and is radial in the circumferential direction of the hole. A plurality of convex portions are provided on the surface.

  A hole is formed along the axis of the protrusion of the opening / closing door cushion, and a plurality of protrusions are provided radially in the circumferential direction of the hole. When a lateral force is applied due to a collision, it is possible to suppress a decrease in collision energy absorption performance.

  The opening / closing door cushion according to the first aspect of the present invention can suppress a decrease in collision energy absorption performance when a lateral force is applied by the collision of the collision body from an oblique direction.

  According to the second aspect of the present invention, the door cushion according to the present invention can suppress a decrease in collision energy absorption performance when a lateral force is applied by the collision of the collision body from an oblique direction.

  The opening / closing door cushion according to the third aspect of the present invention can further suppress a decrease in collision energy absorption performance when a lateral force is applied due to a collision of the collision body from an oblique direction.

  According to the fourth aspect of the present invention, the opening / closing door cushion according to the present invention can suppress a decrease in collision energy absorption performance when a lateral force is applied by the collision of the collision body from an oblique direction.

  According to the fifth aspect of the present invention, the opening / closing door cushion according to the present invention can suppress a decrease in collision energy absorption performance when a lateral force is applied due to a collision of the collision body from an oblique direction.

  1st Embodiment of the cushion for doors in this invention is described according to FIGS. The clearance between the bottom of the screw groove in the door cushion and the apron upper member does not hinder the door cushion from being screwed into the apron upper member, and the door cushion is attached to the apron upper member. Although the dimensions are set so that the position does not shift when attached, the intervals are enlarged in the drawings for the sake of explanation.

  In the figure, the arrow UP indicates the vehicle body upward direction, the arrow FR in the figure indicates the vehicle body front direction, and the arrow IN in the figure indicates the vehicle width inside direction.

  FIG. 6 is a perspective view of the front portion of the vehicle body to which the opening / closing door cushion according to the present embodiment is applied as seen from the front side of the vehicle body, and FIG. 1 is taken along the section line 1-1 of FIG. An enlarged cross-sectional view is shown.

  As shown in FIG. 6, in the automobile body 10 of the present embodiment, a pair of left and right apron upper members 14 are provided on both outer tops of the front portion 12 in the vehicle width direction. The pair of left and right apron upper members 14 are provided along the longitudinal direction of the vehicle body, and a radiator support upper 20 is installed along the vehicle width direction at each front end portion of the pair of left and right apron upper members 14. ing.

  Closed positioning hood cushions 22 are attached to the front upper portions of the pair of left and right apron upper members 14, respectively. The pair of left and right apron upper members 14 are closed by the hood cushion 22. It has become. An engine hood 24 as an open / close lid is attached to the rear upper part of the apron upper member 14 via a hinge (not shown) so that the engine room 26 can be opened and closed. Yes.

  As shown in FIG. 1, the engine hood 24 includes a hood outer panel 30 that constitutes a vehicle body outer side portion of the engine hood 24, and a hood inner panel 32 is attached to the hood outer panel 30 on the vehicle body inner side portion of the hood outer panel 30. Are arranged along. A space 34 is formed between the hood outer panel 30 and the hood inner panel 32, and the outer peripheral edge portion 30A of the hood outer panel 30 and the outer peripheral edge portion 32A of the hood inner panel 32 are coupled to each other by hemming. Yes.

  As shown in FIG. 4, the front portion 14 </ b> B of the upper wall portion 14 </ b> A in the pair of left and right apron upper members 14 is an attachment portion of the hood cushion 22, and a through hole 36 is formed in each. Further, a notch 38 is formed at one place along the radial direction of the through hole 36 at the peripheral edge of the through hole 36. Further, the peripheral edge portion of the through hole 36 is inclined so as to gradually become lower from one peripheral edge portion 38A facing the notch 38 to the other peripheral edge portion 38B. Is formed. For this reason, the hood cushion 22 can be screwed into the through hole 36 through the notch 38.

  The shape of the hood cushion 22 is a columnar shape, and the material of the hood cushion 22 is an elastic member such as rubber or resin. Further, screw grooves 40 are formed on the outer peripheral portion of the hood cushion 22 at a predetermined pitch in the longitudinal direction that is the axial direction of the hood cushion 22. That is, the screw groove 40 is engraved on the outer periphery of the hood cushion 22 around the entire length of the hood cushion 22 around the axis of the hood cushion 22. A screw thread 42 is formed between the screw grooves 40 on the outer peripheral portion of the hood cushion 22.

  The amount of protrusion of the hood cushion 22 from the apron upper member 14 to the upper side of the apron 14 in the normal state (height of the protruding portion 22A) H1 depends on the amount of screwing of the lower portion 22C of the hood cushion 22 into the apron upper member 14. Can be adjusted.

  As shown in FIG. 4, a plurality of recesses 50 as fragile portion forming means are formed in the bottom portion 40 </ b> A of the screw groove 40 of the hood cushion 22. These recesses 50 are formed on the bottom 40 </ b> A of the screw groove 40 in a direction approaching the axis 22 </ b> D of the hood cushion 22 (center direction along the radius) and at substantially equal intervals over the entire circumference of the hood cushion 22. Is formed.

  As shown in FIG. 5, the adjacent recesses 50 are connected to each other with a gentle curve via the protrusions 52, and the shape seen from the axis 22 </ b> D of the bottom 40 </ b> A of the screw groove 40 has a gentle unevenness at the outer periphery. It has a round shape with a curve.

  Accordingly, the bottom portion 40A of the screw groove 40 is more easily deformed by a lateral force acting in a direction orthogonal to the axis 22D (a central direction along the radius) than the configuration in which the concave portion 50 is not formed. Yes.

  For this reason, as shown in FIG. 2, the collision body K collides obliquely from above with the hood cushion 22 supported by the front portion 14 </ b> B of the upper wall portion 14 </ b> A of the apron upper member 14. When a lateral force G1 of a predetermined value or more as a component acts from a direction orthogonal to the axis 22D, the convex portion (fragile portion) 52 between the adjacent concave portions 50 in the bottom portion 40A of the screw groove 40 is deformed. (Compression deformation). As a result, the attachment position of the hood cushion 22 to the through hole 36 is displaced in the direction in which the lateral force G1 acts (the direction of arrow A in FIG. 2).

  The screw thread 42 of the present embodiment does not deform the closing force of the engine hood 24 acting on the hood cushion 22 from the upper side of the vehicle body to the lower side of the vehicle body until the predetermined value, but the closing direction force of the engine hood 24 is predetermined. If it exceeds the value, it will be deformed. Further, a gap 54 is formed between the inner peripheral portion 36A of the through hole 36 of the apron upper member 14 and the bottom portion 40A of the screw groove 40 of the hood cushion 22, and a screw thread deformed in the gap 54 is formed. 42 can pass through.

  Accordingly, the collision body K collides with the engine hood 24 from the upper side of the vehicle body to the lower side of the vehicle body, and a closing direction force greater than a predetermined value is applied to the hood cushion 22 supporting the engine hood 24 from the lower side from the upper side of the vehicle body. When acting toward the front, the screw thread 42 on the vehicle body upper side contacting the peripheral edge of the through hole 36 formed in the front portion 14B of the upper wall portion 14A of the apron upper member 14 is deformed upward, and the apron upper member The hood cushion 22 moves downward (arrow B in FIG. 2) with respect to the 14 through holes 36.

  Next, the operation of this embodiment will be described.

  In the present embodiment, when the engine hood 24 in the open state is closed, the protruding portion 22A (the portion of the height H1) protruding from the apron upper member 14 in the hood cushion 22 is elastic due to the closing direction force of the engine hood 24. Deform.

  At this time, as shown in FIG. 7 (0 to S1, 0 to F1), the relationship between the stroke S of the engine hood 24 to the lower side of the vehicle body and the force F received by the engine hood 24 from the hood cushion 22 is as follows. The force F rises gradually as S increases. That is, since the force F is small with respect to the stroke S when the engine hood 24 is normally closed, the engine hood 24 can be easily moved to the closed state.

  On the other hand, as shown in FIG. 7 (0 to S3, 0 to F3), when the engine hood 24 is strongly closed, the protrusion 22A of the hood cushion 22 is greatly elastically deformed. As a result, the force F increases gradually with increasing stroke S, and then increases rapidly. For this reason, since the stroke S becomes small with respect to the force F when the engine hood 24 is strongly closed, it is possible to prevent the engine hood 24 from interfering with other parts attached below the engine hood 24.

  In addition, as shown in FIG. 2, when the collision body K collides obliquely from above, a lateral force G1 of a predetermined value or more that is a horizontal component of the collision load G acts from a direction orthogonal to the axis 22D. Further, the convex portion 52 of the bottom portion 40A of the screw groove 40 is deformed (compressed). For this reason, the mounting position of the hood cushion 22 in the through hole 36 is displaced in the direction in which the lateral force G1 acts (direction of arrow A in FIG. 2).

  As a result, the gap 54 between the bottom 40A of the screw groove 40 on the side on which the lateral force G1 acts in the hood cushion 22 and the inner peripheral portion 36A of the through hole 36 of the apron upper member 14 is enlarged. For this reason, as shown in FIG. 3, a portion 22E of the hood cushion 22 falls downward (arrow C in FIG. 3) from the gap 54.

  As a result, as shown in FIG. 7 (S3 to S4, F3 to F4), the force F decreases as the stroke S increases. For this reason, since the force F when the collision body K contacts the engine hood 24 decreases and the stroke S increases, the amount of energy absorbed when the collision body K collides can be increased.

  That is, as shown by a two-dot chain line in FIG. 7, the bottom of the hood cushion 22 (limit of elastic deformation) can prevent the stroke S5 from being shortened and the force F5 received by the collision body from being increased. For this reason, the gap H1 in the normal state between the engine hood 24 and the apron upper member 14 can be effectively used to improve the collision energy absorption performance.

  Therefore, in this embodiment, when the lateral force G1 is applied by the collision of the collision body K from the oblique direction, it is possible to suppress a decrease in the collision energy absorption performance.

  Although not shown, in this embodiment, the collision body K collides with the engine hood 24 from the upper side of the vehicle body to the lower side of the vehicle body, and a predetermined value is applied to the hood cushion 22 that supports the engine hood 24 from the lower side. When the above-mentioned closing direction force acts from the upper side of the vehicle body to the lower side of the vehicle body, the screw on the upper side of the vehicle body that comes into contact with the peripheral portion of the through hole 36 formed in the front portion 14B of the upper wall portion 14A of the apron upper member 14 The mountain 42 is deformed upward, and the hood cushion 22 moves downward (arrow B in FIG. 2) with respect to the through hole 36 of the apron upper member 14.

  As a result, even when a load G is input along the direction of the axis 22D of the hood cushion 22, it is possible to suppress a decrease in collision energy absorption performance. Further, since the plurality of recesses 50 as the weak part forming means are formed at substantially equal intervals, the collision energy absorption performance does not vary greatly depending on the position where the hood cushion 22 is attached (set).

  Next, a second embodiment of the door cushion according to the present invention will be described with reference to FIG.

  In addition, the same member as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  As shown in FIG. 8, in the present embodiment, slits are formed along the circumferential direction of the screw groove 40 of the hood cushion 22 in the convex portion 52 excluding the plurality of concave portions 50 in the bottom portion 40 </ b> A of the screw groove 40 of the hood cushion 22. 60 is formed.

  The slit 60 is formed at a depth M1 toward the direction approaching the axis 22D of the hood cushion 22 at the upper and lower ends of the bottom 40A, which are both ends in the direction (vertical direction) of the axis 22D in the bottom 40A of the screw groove 40. Has been.

  Therefore, when a lateral force of a predetermined value or more is applied from a direction orthogonal to the axis 22D in a state where the hood cushion 22 is supported by the front portion 14B of the upper wall portion 14A of the apron upper member 14, the screw A fragile portion between the upper and lower slits 60 in the convex portion 52 of the bottom portion 40A of the groove 40 is deformed (compressed). As a result, the attachment position of the hood cushion 22 to the through hole 36 is easily displaced in the direction in which the lateral force acts as compared with the first embodiment.

  Therefore, in this embodiment, the same effect as that of the first embodiment can be obtained, and when the load G is input along the direction of the axis 22D of the hood cushion 22 as compared with the first embodiment, the collision energy is increased. The deterioration of the absorption performance can be further suppressed.

  Next, a third embodiment of the door cushion according to the present invention will be described with reference to FIGS.

  In addition, the same member as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  As shown in FIG. 9, in this embodiment, a slit 60 is formed as a fragile portion forming means on the bottom 40 </ b> A of the screw groove 40 of the hood cushion 22. The slit 60 extends toward the direction approaching the axis 22 </ b> D of the hood cushion 22 at the upper and lower ends of the bottom 40 </ b> A that are both ends in the axial direction (vertical direction) of the bottom 40 </ b> A of the screw groove 40 and on the entire circumference of the hood cushion 22. It is continuously formed with a substantially equal depth M1.

  Therefore, as shown in FIG. 10, the hood cushion 22 is supported by the front portion 14B of the upper wall portion 14A of the apron upper member 14, and the lateral direction of a predetermined value or more from the direction orthogonal to the axis 22D. When the force G1 is applied, the fragile portion between the upper and lower slits 60 in the bottom 40A of the screw groove 40 is deformed (compressed). As a result, the mounting position of the hood cushion 22 in the through hole 36 is displaced in the direction in which the lateral force G1 acts (the direction of arrow A in FIG. 10).

  Therefore, also in this embodiment, the same effect as the first embodiment can be obtained. In the present embodiment, since the slit 60 is continuously formed over the entire circumference with a substantially uniform depth, the amount of displacement is caused by the action of the lateral force G1 depending on the position where the hood cushion 22 is attached (set). The same effect can be obtained as compared with the first embodiment.

  Next, a fourth embodiment of the door cushion according to the present invention will be described with reference to FIGS.

  In addition, the same member as 3rd Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  As shown in FIG. 11, in this embodiment, a slit 60 is formed as a weak portion forming means on the bottom 40 </ b> A of the screw groove 40 of the hood cushion 22. The slit 60 is continuously formed at a lower end of the bottom portion 40 </ b> A of the screw groove 40 in a direction approaching the axis 22 </ b> D of the hood cushion 22 and at a substantially uniform depth over the entire circumference of the hood cushion 22.

  Note that the slit 60 is provided along the lower portion of the screw groove 40 when viewed from the direction orthogonal to the axis 22D as shown in FIG. 11, so that it can be easily set at a proper position when the hood cushion 22 is attached (set). This is preferable in that it is difficult to shift after being set.

  For this reason, as shown in FIG. 12, in a state where the hood cushion 22 is supported by the front portion 14B of the upper wall portion 14A of the apron upper member 14, the lateral direction of a predetermined value or more from the direction orthogonal to the axis 22D. When the force G1 is applied, the fragile portion above the slit 60 in the bottom portion 40A of the screw groove 40 is deformed (compressed). As a result, the mounting position of the hood cushion 22 in the through hole 36 is displaced in the direction in which the lateral force G1 acts (the direction of arrow A in FIG. 12).

  Therefore, also in this embodiment, the same effect as the third embodiment can be obtained.

  Next, a fifth embodiment of the door cushion according to the present invention will be described with reference to FIGS.

  In addition, the same member as 3rd Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  As shown in FIG. 13, in the present embodiment, a slit 60 is formed as a fragile portion forming means on the bottom portion 40 </ b> A of the screw groove 40 of the hood cushion 22. The slit 60 is continuously formed at an upper end of the bottom portion 40 </ b> A of the screw groove 40 in a direction approaching the axis 22 </ b> D of the hood cushion 22 and at a substantially uniform depth over the entire circumference of the hood cushion 22.

  Therefore, as shown in FIG. 14, the hood cushion 22 is supported by the front portion 14B of the upper wall portion 14A of the apron upper member 14, and the lateral direction of a predetermined value or more from the direction orthogonal to the axis 22D. When the force G1 is applied, the fragile portion below the slit 60 in the bottom portion 40A of the screw groove 40 is deformed (compressed). As a result, the mounting position of the hood cushion 22 in the through hole 36 is displaced in the direction in which the lateral force G1 acts (the direction of arrow A in FIG. 14).

  Therefore, also in this embodiment, the same effect as the third embodiment can be obtained.

  Next, a sixth embodiment of the door cushion according to the present invention will be described with reference to FIGS.

  In addition, the same member as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  As shown in FIG. 15, in this embodiment, the hole 64 as the weak portion forming means is formed on the axis 22 </ b> D of the screw groove 40 of the hood cushion 22 along the axis 22 </ b> D. In addition, a plurality of convex portions 66 are formed radially on the inner circumferential portion 64A of the hole 64 in a direction away from the axis 22D and over the entire circumference at substantially equal intervals in the circumferential direction.

  As shown in FIG. 16, adjacent convex portions 66 are connected to each other through a gentle curve through a concave portion 68, and the inner peripheral portion 64A of the hole 64 has a gentle irregular shape as viewed from the direction of the axis 22D. It has a round shape with a curve.

  Therefore, the bottom 40A of the screw groove 40 is more easily deformed by a lateral force G1 acting in a direction perpendicular to the axis 22D (a central direction along the radius) than in the configuration in which the hole 64 is not formed. ing.

  Therefore, when a lateral force G1 of a predetermined value or more is applied from a direction orthogonal to the axis 22D in a state where the hood cushion 22 is supported by the front portion 14B of the upper wall portion 14A of the apron upper member 14. The bottom 40A of the screw groove 40 is deformed (compressed). In other words, the lateral load G1 is displaced by bending the cross-sectional protruding shapes at 12 o'clock and 6 o'clock with respect to the hollow uneven shape. As a result, the attachment position of the hood cushion 22 to the through hole 36 is displaced in the direction in which the lateral force G1 acts.

  Therefore, also in this embodiment, the same effect as the first embodiment can be obtained. Further, when the hood cushion 22 is mounted, a jig can be inserted into the hole 64 and mounted, and the work can be easily performed even in a state where it is difficult to grip and rotate around the hood cushion 22.

  Next, a seventh embodiment of the door cushion according to the present invention will be described with reference to FIGS.

  In addition, the same member as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  As shown in FIGS. 17 and 18, in the present embodiment, as in the first embodiment, the concave portion 50 and the convex portion 52 are formed in the bottom portion 40 </ b> A of the screw groove 40, and the same as in the sixth embodiment. Further, the inner circumferential portion 64A of the hole 64 formed on the axis 22D of the screw groove 40 of the hood cushion 22 along the axis 22D is spaced substantially evenly in the direction away from the axis 22D and over the entire circumference. Thus, a plurality of convex portions 66 are formed radially.

  Therefore, in this embodiment, compared with 1st Embodiment and 6th Embodiment, the attachment position to the through-hole 36 of the hood cushion 22 can be easily displaced to the direction where the lateral force G1 acts. .

  In the above, the present invention has been described in detail with respect to specific embodiments. However, the present invention is not limited to the above embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the first embodiment, the shape seen from the axis 22D of the bottom portion 40A of the screw groove 40 is a round shape with a gentle uneven curve on the outer peripheral portion. The shape of the recess 50 viewed from the axis 22D may be other shapes such as a triangle shape or a rectangular shape. Moreover, you may shape | mold using the material whose hardness of the convex part seen from the concave part is lower than the other site | part of the food cushion 22. FIG. By doing in this way, it has the effect that it is easy to deform | transform and move when the stress of a horizontal direction is added to the hood cushion 22 because the site | part which has become convex deform | transforms easily.

  Further, as in the eighth embodiment of the door cushion according to the present invention shown in FIG. 19, a hole 80 having a circular cross section is formed along the axis 22D of the hood cushion 22 in accordance with the target characteristics of the hood cushion 22. It is good also as a structure.

  Further, as in the ninth embodiment of the opening / closing door cushion according to the present invention shown in FIG. 20, the cross-sectional shape viewed from the circumferential direction of the slit 60 as the fragile portion forming means has a width toward the axis 22 </ b> D of the recess 50. It is good also as the inclination shape which becomes narrow. Thus, the durability of the mold at the time of product molding is improved by making the cross-sectional shape viewed from the circumferential direction of the slit 60 an inclined shape whose width becomes narrower toward the axis 22D of the recess 50. Moreover, it has the effect that the food cushion 22 moves and deform | transforms smoothly with respect to the stress of a horizontal direction.

  Moreover, the recessed part 50 does not need to be formed by the fixed space | interval like 10th Embodiment of the cushion for doors in this invention shown by FIG.

  Moreover, you may make it not provide a recessed part in the screw groove 40 of the lower part in the hood cushion 22 like 11th Embodiment of the opening-and-closing door cushion in this invention shown by FIG. Moreover, it is not necessary to provide the slit 60 provided in a convex part in all the convex parts.

  Further, as in the twelfth embodiment of the opening / closing door cushion according to the present invention shown in FIG. 23, the lower screw groove 40 in the hood cushion 22 may not be provided with a slit. By doing in this way, when the hood cushion 22 is screwed into the apron upper member 14, there exists an effect that it is easy to screw in.

  Further, the depth of the slit 60 may be partially increased. For example, as shown in FIG. 23, when the depth of the slit 60 near the center of the axis (vertical axis) 22D of the hood cushion 22 is increased, the hood cushion 22 is more likely to buckle against stress from the lateral direction, and walking is further performed. Person protection effect can be obtained.

  Further, as in the thirteenth embodiment of the opening / closing door cushion according to the present invention shown in FIG. 24, even if the convex portions 66 provided in the holes 64 formed along the axis 22 </ b> D are not continuous, they are equally spaced. It does not have to be.

  Further, as in the fourteenth embodiment of the opening / closing door cushion according to the present invention shown in FIGS. 25 and 26, the convex portion 52 has a predetermined interval along the circumferential direction, for example, 90 degrees, 120 degrees, 180 degrees. It is good also as a large-sized shape which protruded in the outer peripheral direction from the through-hole 36 of the hood cushion 22 every (in FIG.25 and FIG.26 90 degree | times). By doing in this way, when the vehicle travels on a rough road or the like, when the hood cushion 22 rotates in the direction of loosening (falling down) due to the vibration of the vehicle, the convex portion 52 having a large shape is formed on the cushion 22. It is caught in the notch 38 of the through-hole 36, and rotation of the hood cushion 22 can be suppressed or prevented.

  The interval in the circumferential direction of the convex portion 52 having a large shape is appropriately set in consideration of productivity due to the shape of the mold when the hood cushion 22 is manufactured, ease of assembly to the vehicle, and the like. Further, as shown in FIG. 25, an inclined surface may be formed on the outer peripheral edge of the screw thread 42 on the upper side of the vehicle body so that the screw thread 42 is easily deformed upward.

  In addition, as in the fifteenth embodiment of the opening / closing door cushion according to the present invention shown in FIG. 27, in the convex portion 52 having a large shape, the inclined surface 52 </ b> A that is on the rotation direction (arrow D direction) side during assembly is provided. The inclination angle may be made smaller than the inclination angle of the inclined surface 52B on the opposite side of the rotation direction during assembly. By doing in this way, the rotation load at the time of the assembly | attachment of the hood cushion 22 can be made small, and the effect which suppresses or prevents the rotation of the hood cushion 22 in the fall direction can be enlarged. The convex portion 52 may be provided with a slit as shown in FIG.

  Further, as in the sixteenth embodiment of the door cushion according to the present invention shown in FIG. 28, the thickness N1 of the convex portion 52 having a large shape by changing the shape of the hole 80 is changed to the thickness of the other convex portion 52. It may be the same as the thickness N2. By doing in this way, the site | part which formed the convex part 52 made into the large shape in the food cushion 22 with respect to the horizontal direction force which acts on the direction orthogonal to the axis line 22D (center direction along a radius) is others. It can be easily deformed in the same manner as the portion where the convex portion 52 is formed.

  Further, the shape of the slit 60 of the second embodiment (FIG. 8) may be the shape as in the fourth embodiment (FIG. 11) or the ninth embodiment (FIG. 20).

  In each of the above embodiments, the screw groove 40 may be formed only in a predetermined portion of the hood cushion 22.

  Further, the hole 64 as the fragile portion forming means does not need to penetrate the hood cushion 22 in the axial direction (vertical direction). When the protruding portion 22A of the hood cushion 22 is determined in advance, only the protruding portion 22A is used. You may form in.

  In addition, as shown in FIG. 6, the opening / closing door cushion of the present invention can be applied to a hood cushion 80 for tight closing measures attached to the upper portions of both ends of the radiator support upper 20 in the vehicle width direction.

  Moreover, you may attach the cushion for doors of this invention to the engine hood 24 side used as the door side.

  The opening / closing door cushion of the present invention is not limited to the engine hood 24, and can be applied to other opening / closing lids such as luggage doors, back doors, sliding doors, etc. It is also applicable to the lid.

FIG. 7 is an enlarged cross-sectional view taken along a 1-1 cross-sectional line in FIG. 6. It is sectional drawing corresponding to FIG. 1 which shows the deformation | transformation state of the cushion for doors which concerns on 1st Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the drop-off state of the cushion for doors which concerns on 1st Embodiment of this invention. It is the disassembled perspective view seen from the vehicle body front diagonally upper direction which shows the cushion for doors which concerns on 1st Embodiment of this invention. FIG. 5 is an enlarged cross-sectional view taken along the line 5-5 in FIG. It is the perspective view seen from the vehicle body diagonally front which shows the vehicle body front part to which the cushion for doors which concerns on 1st Embodiment of this invention was applied. It is a graph which shows the relationship between the stroke S of the hood in the door cushion which concerns on 1st Embodiment of this invention, and the force F which a hood receives from a hood cushion. It is sectional drawing corresponding to FIG. 1 which shows the cushion for doors which concerns on 2nd Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cushion for doors which concerns on 3rd Embodiment of this invention. It is sectional drawing corresponding to FIG. 2 which shows the cushion for doors which concerns on 3rd Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cushion for doors which concerns on 4th Embodiment of this invention. It is sectional drawing corresponding to FIG. 2 which shows the cushion for doors which concerns on 4th Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cushion for doors which concerns on 5th Embodiment of this invention. It is sectional drawing corresponding to FIG. 2 which shows the cushion for doors which concerns on 5th Embodiment of this invention. It is a disassembled perspective view corresponding to FIG. 3 which shows the cushion for doors which concerns on 6th Embodiment of this invention. It is sectional drawing corresponding to FIG. 5 which shows the cushion for doors which concerns on 6th Embodiment of this invention. It is a disassembled perspective view corresponding to FIG. 3 which shows the cushion for doors which concerns on 7th Embodiment of this invention. It is sectional drawing corresponding to FIG. 5 which shows the cushion for doors which concerns on 7th Embodiment of this invention. It is a disassembled perspective view corresponding to FIG. 3 which shows the cushion for doors which concerns on 8th Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cushion for doors which concerns on 9th Embodiment of this invention. It is sectional drawing corresponding to FIG. 5 which shows the cushion for doors which concerns on 10th Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cushion for doors which concerns on 11th Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cushion for doors which concerns on 12th Embodiment of this invention. It is sectional drawing corresponding to FIG. 5 which shows the cushion for doors which concerns on 13th Embodiment of this invention. It is a disassembled perspective view corresponding to FIG. 3 which shows the cushion for doors which concerns on 14th Embodiment of this invention. It is sectional drawing corresponding to FIG. 5 which shows the cushion for doors which concerns on 14th Embodiment of this invention. It is sectional drawing corresponding to FIG. 5 which shows the cushion for doors which concerns on 15th Embodiment of this invention. It is sectional drawing corresponding to FIG. 5 which shows the cushion for doors which concerns on 16th Embodiment of this invention.

Explanation of symbols

14 Apron upper member 14A Apron upper member upper wall part 14B Apron upper member upper wall part (mounting part)
22 Food Cushion (Cushion for door)
22A Protrusion part of the hood cushion 24 Engine hood (opening / closing door)
36 hole 40 screw groove 42 screw thread 50 recess (fragile portion forming means)
52 convex part 56 hole 60 slit (fragile part forming means)
64 holes (fragile part forming means)
66 Convex part 68 Concave part 72 Slit

Claims (5)

It is screwed into a perforated mounting part provided on either the open / close door or the part closed by the open / close door, and the protruding height of the protruding part from the mounting part is adjusted by changing the screwing amount. In the cushion for the opening and closing door that elastically supports the other one of the opening and closing door and the portion closed by the opening and closing door with the protruding portion,
When a lateral force of a predetermined value or more is applied to the projecting portion in a state where it is formed on the bottom portion of the screw groove and supported by the attachment portion, the bottom portion of the screw groove is deformed to the hole of the attachment portion. An opening / closing door cushion having a weak portion forming means for displacing the mounting position in a direction in which the lateral force acts.   The opening / closing door cushion according to claim 1, wherein the fragile portion forming means is a plurality of concave portions formed in a circumferential direction at a bottom portion of the screw groove.   The opening / closing door cushion according to claim 2, wherein a slit is formed along a circumferential direction in a convex portion excluding the plurality of concave portions at a bottom portion of the screw groove.   The opening / closing door cushion according to claim 1, wherein the fragile portion forming means is a slit continuously formed in a part of a bottom portion of the screw groove.   The said weak part formation means is a hole formed along the axis line of the said protrusion part, The several convex part is provided radially in the circumferential direction of this hole, The Claim 1 characterized by the above-mentioned. Opening / closing door cushion.

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