JP5486423B2 - Member mounting structure - Google Patents

Description

  The present invention relates to a member mounting structure configured to mount a member via an elastic body.

  Conventionally, for example, an engine cover arranged so as to cover the upper side of the engine is attached to a member on the engine side via an elastic body (see, for example, Patent Document 1). In the thing of patent document 1, the attachment seat of the elastic body is provided in the back side of the engine cover. The mounting seat includes a seat body extending substantially horizontally and a connecting wall for connecting the seat body to the cover body. The elastic body is formed in a substantially cylindrical shape, and a fitting hole into which the outer peripheral portion of the elastic body is fitted is formed in the seat body so as to penetrate the seat body. Further, the engine side member is provided with a columnar member protruding upward. The engine cover is elastically supported by the engine by inserting the columnar member into the inner hole of the elastic body.

  Further, in the engine cover mounting structure disclosed in Patent Document 1, a fragile portion is formed in the mounting seat. When a pedestrian or the like collides, the fragile portion is destroyed to absorb the shock.

Japanese Patent No. 4062524

  By the way, in Patent Document 1, when mounting the engine cover, first, the elastic body is fitted into the fitting hole of the mounting seat of the engine cover, and then the engine cover is moved from the upper side to the lower side of the engine. The member is inserted into the inner hole of the elastic body.

  The relationship between the outer diameter of the columnar member and the size of the inner hole of the elastic body is set so that the fit is tight so that the columnar member does not come out of the inner hole of the elastic body during normal use. . Further, manufacturing errors may occur in the columnar member and the elastic body within the tolerance range, and it is considered that the fit is further tightened depending on this error. When the fit is tight, the elastic body is strongly pressed in the insertion direction of the columnar member when the columnar member is inserted. At this time, since the outer peripheral portion of the elastic body is only fitted in the fitting hole of the mounting seat, the elastic body may be detached from the fitting hole of the mounting seat due to deformation of the elastic body or deformation of the mounting seat. There is.

  Further, when considering vibration absorption by the elastic body, the elastic body is preferably soft. However, if the elastic body is softened, it is easy to be deformed when the elastic body is pushed in the insertion direction when the columnar member is inserted, and the elastic body is easily detached from the fitting hole of the mounting seat.

  The present invention has been made in view of the above points, and the object of the present invention is when an impact is applied by collision of an obstacle while preventing the elastic body from being detached from the mounting seat during mounting. The purpose is to enable shock absorption.

  In order to achieve the above object, in the present invention, a stopper portion is provided to prevent the elastic body from being detached from the mounting seat at the time of mounting, and the shock absorber can be absorbed by displacing the stopper portion when an obstacle collides. .

  1st invention attaches an elastic body to the attachment seat provided in the 1st member, and inserts the said 1st member by inserting the columnar member provided in the 2nd member in the insertion hole formed in this elastic body. In the member attachment structure configured to be attached to the second member via the elastic body, the attachment seat includes: a seat body disposed away from the body portion of the first member toward the second member side; The seat body has a connecting part for connecting to the body part, the seat body is formed with a fitting part for fitting the outer peripheral part of the elastic body, and the first member has the first part. The elastic body is disposed between the main body of the member and the seat main body so as to face the surface of the elastic body on the front side in the insertion direction of the columnar member, and the elastic body is detached from the fitting portion at the time of mounting. A stopper is provided to prevent the It said first member by collision and is characterized in that it is configured to be displaced when subjected to force from the elastic body by moving in a direction approaching to the second member.

  According to this configuration, when the first member is attached to the second member, the columnar member is fitted into the elastic body of the attachment seat. At this time, since the stopper portion faces the surface of the elastic member on the front side in the insertion direction of the columnar member, even if the elastic body is strongly pressed in the insertion direction of the columnar member, the elastic body does not detach from the fitting portion. .

  On the other hand, when the first member moves in the direction approaching the second member due to the collision of the obstacle, since the stopper portion is arranged so as to face the elastic body as described above, the elastic body hits the stopper portion. Become. In general, a larger force is applied when an obstacle collides than when the obstacle is installed. For this reason, the stopper part which received force from the elastic body displaces. Thereby, an impact is absorbed.

  According to a second invention, in the first invention, when the first member moves in a direction approaching the second member due to an obstacle collision, the elastic body moves relative to the stopper portion while contacting the stopper portion. It is comprised by these.

  According to this configuration, when the elastic body moves while being in contact with the stopper portion, a resistance force is generated between the elastic body and the stopper portion, thereby obtaining an impact absorbing action.

  According to a third invention, in the first or second invention, the connecting portion of the mounting seat of the first member includes first and second wall portions arranged to face each other with a space therebetween, and the stopper portion is A first projecting portion projecting from the first wall portion toward the second wall portion, and a second projecting portion projecting from the second wall portion toward the first wall portion are provided. It is what.

  According to this configuration, when the obstacle collides, the elastic body hits the first protrusion and the second protrusion. When the elastic body hits both projecting portions, a force acts on the first wall portion and the second wall portion, but these wall portions are arranged at a distance from each other, so that they are easily deformed. Therefore, the first protrusion and the second protrusion can be reliably displaced.

  According to a fourth invention, in any one of the first to third inventions, the columnar member is provided with a bent portion that bends when a predetermined force or more is applied in a radial direction, and the columnar member in the first member is provided. A guide portion for guiding the columnar member in the radial direction when the first member moves in a direction approaching the second member due to an obstacle collision is provided at a portion facing the tip side of It is characterized by.

  According to this configuration, when the first member moves in a direction approaching the second member at the time of an obstacle collision, the leading end side of the columnar member is guided in the radial direction of the columnar member by the guide portion. Thereby, since the bent part of the columnar member is bent, it is avoided that the columnar member is stretched.

  According to a fifth invention, in any one of the first to fourth inventions, the first member is an engine cover that covers an engine mounted on a vehicle.

  According to this configuration, for example, when a pedestrian or the like collides with the vehicle, the impact is absorbed by moving the engine cover relative to the engine.

  According to a sixth aspect of the present invention, the first member is mounted by attaching an elastic body to a mounting seat provided in the first member, and inserting a columnar member provided in the second member into an insertion hole formed in the elastic body. In the member attachment structure configured to be attached to the second member via the elastic body, the attachment seat includes: a seat body disposed away from the body portion of the first member toward the second member side; The seat body has a connecting part for connecting to the body part, the seat body is formed with a fitting part for fitting the outer peripheral part of the elastic body, and the first member has the first part. The elastic body is disposed between the main body of the member and the seat main body so as to face the surface of the elastic body on the front side in the insertion direction of the columnar member, and the elastic body is detached from the fitting portion at the time of mounting. A stopper is provided to prevent the When the first member moves in a direction approaching the second member due to a collision, the columnar member has a guide portion that guides the columnar member to the outside of the mounting seat, and the columnar member is in a guide direction by the guide portion. It is comprised so that it may turn toward.

  According to this configuration, when the first member is attached to the second member, the columnar member is fitted into the elastic body of the attachment seat. At this time, since the stopper portion faces the surface of the elastic member on the front side in the insertion direction of the columnar member, even if the elastic body is strongly pressed in the insertion direction of the columnar member, the elastic body does not detach from the fitting portion. .

  On the other hand, when the first member moves in a direction approaching the second member due to the collision of the obstacle, the columnar member is guided to the outside of the mounting seat by the guide portion and is bent. Thereby, an impact is absorbed.

  According to the first invention, the stopper is provided for preventing the elastic body from being detached from the mounting seat of the first member at the time of mounting, and the first member approaches the second member due to the collision of the obstacle. Since the stopper portion is displaced when moving in the direction to move, it is possible to absorb shock when an obstacle collides while preventing the elastic body from being detached when the first member is attached to the second member.

  According to the second invention, when the obstacle collides, the elastic body moves while being in contact with the stopper portion. At this time, it is possible to obtain an impact absorbing action and to improve the impact absorbing performance.

  According to the third invention, the mounting seat includes the first and second wall portions facing each other with a space therebetween, and the stopper portion protrudes from the first and second wall portions protruding from the first wall portion. Since the two projecting portions are provided, when the elastic body hits the first projecting portion and the second projecting portion when the obstacle collides, both the projecting portions can be surely displaced to absorb the impact.

  According to the fourth aspect of the invention, the bent portion that bends when a predetermined force or more is applied to the columnar member is provided, and the columnar member is guided in the radial direction at a portion of the first member that faces the distal end side of the columnar member. Since the guide portion is provided, the columnar member can be bent when the obstacle collides. Thereby, it can avoid that a columnar member comes to stretch and can improve impact absorption performance.

  According to the fifth aspect, since the first member is the engine cover, safety when a pedestrian or the like collides can be improved.

  According to the sixth invention, the stopper is provided for preventing the elastic body from being detached from the mounting seat of the first member at the time of mounting, and the first member approaches the second member due to the collision of the obstacle. Since the columnar member is guided and bent to the outside of the mounting seat when moving in the direction to move, the elastic member is prevented from detaching when the first member is attached to the second member, and at the time of an obstacle collision Shock absorption can be performed.

It is sectional drawing of the state which decomposed | disassembled the attachment structure of the engine cover concerning Embodiment 1. FIG. It is the perspective view which looked at the engine cover from the back side. (A) is sectional drawing in the state where the engine cover was attached, (b) shows the state where the engine cover moved slightly by the collision of the obstacle, (c) shows the engine cover from (b). (D) shows a state where the engine cover has moved more than (c). FIG. 4 is a diagram corresponding to FIG. 3 according to the second embodiment. It is the fragmentary sectional view which looked at the attachment structure of the engine cover concerning Embodiment 3 from the front. FIG. 6 corresponds to FIG. 3 according to the third embodiment and is a cross-sectional view taken along line VI-VI in FIG. 5. It is a perspective view of the columnar member concerning Embodiment 3. FIG. FIG. 6 is a diagram corresponding to FIG. 6 according to the fourth embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
FIG. 1 shows an engine cover mounting structure according to Embodiment 1 of the present invention, in which an engine cover (first member) 1 is connected to a cylinder head (second member) via an elastic body 2 as a member on the engine side. Member) 3 is attached.

  The engine is mounted in an engine room (not shown) provided at the front of the automobile. A hood hood is disposed above the engine.

  The engine cover 1 is formed so as to cover the upper surface of the cylinder head 3 and is an integrally molded product using a resin material. The engine cover 1 is formed integrally with a cover body portion 10 formed in a plate shape extending substantially parallel to the upper surface of the cylinder head 3 and a back surface (lower surface) of the cover body portion 10, and a mounting seat 11 to which the elastic body 2 is attached. And.

  As shown in FIG. 2, the mounting seat 11 includes a seat body 12 and a first connection wall 13 and a second connection wall 14 for connecting the seat body 12 to the cover body 10. The first connecting wall 13 and the second connecting wall 14 constitute a connecting portion of the present invention.

  The first connection wall 13 and the second connection wall 14 extend downward from the back surface of the cover body 10. The 1st connection wall 13 and the 2nd connection wall 14 are arrange | positioned at intervals in the plate | board thickness direction, and so that it may mutually oppose.

  As shown in FIG. 1, the first connecting wall 13 is slightly inclined so as to approach the second connecting wall 14 as it goes downward, and the second connecting wall 14 is the first connecting wall as it goes downward. It is slightly inclined to approach 13. The first connection wall 13 and the second connection wall 14 are symmetrical.

  Thin portions 13 a and 14 a are respectively provided at the base end portions (upper end portions) of the first connection wall 13 and the second connection wall 14. The thin portions 13a and 14a are continuous over the entire width direction of the upper ends of the first connecting wall 13 and the second connecting wall 14. Due to the formation of the thin portions 13a and 14a, the surface of the cover main body portion 10 is less likely to cause sink marks during resin molding.

  On the other hand, the seat main body 12 is formed in a plate shape extending substantially parallel to the cover main body portion 10 so as to connect the lower end portions of the first connecting wall 13 and the second connecting wall 14. As shown in FIG. 2, a substantially circular hole (insertion hole) 12a is formed in the seat body 12 so as to penetrate in the vertical direction.

  Further, a notch portion 12 b is formed at an edge portion of the seat body 12 that extends from the first connection wall 13 to the second connection wall 14. The depth of the notch 12b is set to reach the hole 12a. Therefore, the notch 12b and the hole 12a are continuous, and the hole 12a is opened to one side in the radial direction by the notch 12b. The outer periphery of the elastic body 2 is fitted into the hole 12 a so that the elastic body 2 is attached to the seat body 12. Further, the width of the notch 12b is set narrower than the inner diameter of the hole 12a.

  The seat body 12 of the mounting seat 11 is connected to the cover body 10 only by the first connection wall 13 and the second connection wall 14. For this reason, the width direction both sides of the connection walls 13 and 14 in the attachment seat 11 are each open | released.

  Between the cover main body portion 10 and the seat main body 12 of the mounting seat 11, a stopper portion 15 is provided for preventing the elastic body 2 attached to the seat main body 12 from being detached when the engine cover 1 is attached. ing.

  The stopper portion 15 includes a first protruding portion 15 a that protrudes from the intermediate portion in the vertical direction of the first connecting wall 13 toward the second connecting wall 14, and the intermediate portion in the vertical direction of the second connecting wall 14 to the first connecting wall 13. And a second projecting portion 15b projecting toward the end. The first projecting portion 15 a has a plate shape substantially parallel to the seat body 12 and extends across both ends of the first connecting wall 13 in the width direction. The second projecting portion 15 b is also in a plate shape substantially parallel to the seat body 12 and extends across both ends of the second connecting wall 14 in the width direction.

  The projecting direction front end portion of the first projecting portion 15a and the projecting direction front end portion of the second projecting portion 15b are opposed to each other, and the separation dimension thereof is set shorter than the diameter of the hole portion 12a.

  The first protrusion 15a and the second protrusion 15b are hardly deformed upward when the elastic body 2 is pushed upward and hits the protrusions 15a and 15b when the engine cover 1 is attached. Strength is set. Thereby, the upward displacement of the elastic body 2 is suppressed.

  On the other hand, when the impact from the top to the bottom acts on the engine cover 1 and the engine cover 1 moves in a direction approaching the cylinder head 3, the first protrusion 15 a and the second protrusion 15 b are directed upward from the elastic body 2. The strength of the projecting portions 15a and 15b is set so that the first projecting portion 15a and the second projecting portion 15b bend upward and are displaced (as shown in FIG. 3D). Yes.

  The elastic body 2 is integrally formed using an elastic material such as rubber, for example. As shown in FIG. 1, the elastic body 2 is formed in a substantially cylindrical shape extending vertically. The elastic body 2 is formed with an inner hole (insertion hole) 20 that opens to the lower end surface and extends upward. The center line of the inner hole 20 substantially coincides with the center line of the elastic body 2. On the inner peripheral surface of the inner hole 20, a ridge portion 20a that protrudes radially inward and extends in the circumferential direction is formed in the vicinity of the central portion in the vertical direction. The lower portion of the inner peripheral surface of the inner hole 20 than the protruding portion 20a is configured by a tapered surface 20b that is expanded in diameter toward the lower side. Further, the upper portion of the inner hole 20 above the protruding portion 20 a has substantially the same inner diameter up to the upper end of the inner hole 20.

  A flange 23 extending radially outward and extending in the circumferential direction is formed at the lower end of the outer peripheral surface of the elastic body 2. A lower groove 24 is formed above the flange 23 on the outer peripheral surface of the elastic body 2. The lower groove 24 is continuous in the circumferential direction of the elastic body 2. The peripheral edge of the hole 12 a in the seat body 12 of the mounting seat 11 is fitted into the lower groove 24.

  An inclined surface 25 is provided on the outer peripheral surface of the elastic body 2 above the lower groove 24 so as to reduce the diameter upward. An upper groove 26 is formed above the inclined surface 25 on the outer peripheral surface of the elastic body 2. The upper groove 26 is also continuous in the circumferential direction of the elastic body 2 in the same manner as the lower groove 24.

  The upper part of the elastic body 2 is formed in a thick plate shape extending in the radial direction. A convex portion 27 is formed on the upper end surface of the elastic body 2. The convex portion 27 is substantially circular when viewed from above, and the center thereof and the center line of the elastic body 2 substantially coincide with each other.

  A columnar member 30 is provided on the cylinder head 3 so as to protrude upward. The columnar member 30 is an integrally molded product using a resin material. A projecting portion 32 formed so as to project in the radial direction is provided at the lower portion of the columnar member 30, and the lower surface of the projecting portion 32 is fixed to the upper surface of the cylinder head 3.

  On the upper side of the projecting portion 32 of the columnar member 30, a columnar main body portion 33 protruding upward is provided. The main body 33 has an outer diameter that decreases toward the upper side, and has a tapered shape. A spherical portion 34 is provided at the upper end portion of the main body portion 33. The outer diameter of the spherical portion 34 is set larger than the outer diameter of the upper end portion of the main body portion 33. Therefore, a step 35 is formed at the boundary portion between the spherical portion 34 and the upper end portion of the main body portion 33.

  The outer diameter of the spherical portion 34 is set larger than the inner diameter of the portion of the inner hole 20 of the elastic body 2 where the protruding portion 20a is formed. Accordingly, the spherical portion 34 is fitted into the inner hole 20 of the elastic body 2. In the state where the spherical portion 34 is fitted into the inner hole 20 of the elastic body 2, the protruding portion 20 a is fitted into the step 35.

  Next, the case where the engine cover 1 is attached to the cylinder head 3 will be described. First, the elastic body 2 is attached to the attachment seat 11 of the engine cover 1. That is, after the elastic body 2 is arranged on the side of the notch 12b of the mounting seat 11, the elastic body 2 is moved from there into the notch 12b. At this time, the edge of the notch 12 b is inserted into the lower groove 24 of the elastic body 2. When the elastic body 2 is pushed in strongly, the elastic body 2 is elastically deformed to reach the hole 12a beyond the edge of the notch 12b. In this state, the edge of the hole 12 a of the seat body 12 is fitted into the lower groove 24 formed on the outer peripheral surface of the elastic body 2. As a result, the elastic body 2 is attached to the attachment seat 11. Since the width of the notch 12b is narrow, the elastic body 2 once attached does not come out of the notch 12b.

  Thereafter, the engine cover 1 is attached to the cylinder head 3. The engine cover 1 is disposed above the cylinder head 3, and the tip of the columnar member 30 and the inner hole 20 of the elastic body 2 are substantially aligned to move the engine cover 1 downward. Then, the tip of the columnar member 30 is inserted into the inner hole of the elastic body 2. At this time, since the inner diameter of the portion of the elastic body 2 where the protruding portion 20a is formed is smaller than the outer diameter of the spherical portion 34, the spherical portion 34 of the columnar member 30 hits the protruding portion 20a from below. When the engine cover 1 is moved downward as it is, the spherical portion 34 elastically deforms the ridge portion 20a and gets over, and is positioned above the ridge portion 20a and fitted into the inner hole 20. In this state, the protruding portion 20 a is fitted into the step 35 of the columnar member 30.

  When the spherical portion 34 gets over the protruding portion 20a, the elastic body 2 is pushed upward and elastically deformed. The elastic body 2 that is elastically deformed hits the stopper portion 15 because the stopper portion 15 is provided so as to face the upper end surface of the elastic body 2. Since the strength of the stopper portion 15 is hardly displaced by the force when the engine cover 1 is attached as described above, the upward displacement of the elastic body 2 is suppressed. The same applies to the case where a manufacturing error has occurred in the elastic body 2 or the columnar member 30 and a relatively large force is required for fitting the columnar member 30. This prevents the elastic body 2 from being detached from the mounting seat 11 when the engine cover 1 is mounted.

  When the engine cover 1 is attached to the cylinder head 3 as described above, the elastic body 2 is interposed between the engine cover 1 and the cylinder head 3, so that engine vibration is not easily transmitted to the engine cover 1.

  Next, it is assumed that an impact caused by an obstacle collision is applied to the engine cover 1. The obstacle is, for example, a pedestrian, and when the obstacle collides with the hood of the vehicle, the hood is deformed downward and the engine cover 1 is pushed downward as shown in FIG.

  When the engine cover 1 is pushed downward, the elastic body 2 is displaced downward together with the engine cover 1, the columnar member 30 is inserted deeply into the inner hole 20 of the elastic body 2, and the elastic body 2 is pushed upward. It is. Thus, when viewed with the engine cover 1 as a reference, the elastic body 2 moves relatively upward. As shown in the figure, the upper end surface of the elastic body 2 first hits the stopper portion 15. Since the stopper portion 15 has not been deformed so far, the engine cover 1 need not be replaced or repaired with such an impact.

  As shown in FIG. 3C, when the engine cover 1 that has received an impact moves further downward, the stopper portion 15 is strongly pressed from below by the columnar member 30 via the elastic body 2. Thereby, the 1st protrusion part 15a and the 2nd protrusion part 15b bend | fold from the base end vicinity so that each front end side may be displaced upwards.

  When the first projecting portion 15a and the second projecting portion 15b receive a force from below, the force also acts on the first and second connecting walls 13 and 14 provided with the projecting portions 15a and 15b. Since the first and second connection walls 13 and 14 are arranged so as to face each other apart from each other, the connection walls 13 and 14 that have received force are easily deformed so that the interval is widened. It becomes easy to displace 15a and 15b so that it may mutually separate. As a result, the columnar member 30 is reliably prevented from stretching in the center line direction.

  As shown in FIG. 3D, when the engine cover 1 further moves downward, the upper portion of the elastic body 2 is in contact with the tip portions of the first projecting portion 15a and the second projecting portion 15b, and between the two tip portions. Move up through. When the elastic body 2 moves while being in contact with the first projecting portion 15a and the second projecting portion 15b, a resistance force is applied to the downward movement of the engine cover 1, and shock absorption is performed. .

  At this time, the amount of deformation of the first protrusion 15a and the second protrusion 15b increases, and shock absorption is also performed by the deformation of the first protrusion 15a and the second protrusion 15b. The elastic body 2 is elastically deformed so as to extend vertically.

  When the amount of downward movement of the engine cover 1 is large, the upper portion of the elastic body 2 is finally broken as shown in FIG.

  Accordingly, in the first embodiment, since the stopper portion 15 is provided for preventing the elastic body 2 from being detached from the mounting seat 11 of the engine cover 1 when the engine cover 1 is attached, the engine cover 1 is attached to the cylinder head 3. The elastic body 2 can be prevented from detaching when attached to the base. Since the stopper 15 can be deformed and displaced when the engine cover 1 moves in the direction approaching the cylinder head 3 due to the collision of an obstacle such as a pedestrian, the shock absorption during the collision of the obstacle is absorbed. It can be carried out.

  Further, the elastic body 2 moves while being in contact with the stopper portion 15 when the obstacle collides. Thereby, an impact absorbing function can be obtained, and impact absorbing performance can be enhanced.

  The mounting seat 11 includes first and second connecting walls 13 and 14 that are opposed to each other with a space therebetween, and a stopper portion 15 that protrudes from the first connecting wall 13 and a second connecting portion. A second projecting portion 15 b projecting from the wall 14. Therefore, when the elastic body 2 hits the first projecting portion 15a and the second projecting portion 15b when the obstacle collides, both the projecting portions 15a and 15b are surely displaced in directions away from each other to perform shock absorption. it can.

  In the first embodiment, the elastic body 2 is finally broken. However, the invention is not limited to this, and the elastic body 2 may not be broken.

  Further, the convex portion 27 of the elastic body 2 may be omitted.

(Embodiment 2)
FIG. 4 shows an engine cover mounting structure according to Embodiment 2 of the present invention. In the second embodiment, the shape of the elastic body 2 is different from that of the first embodiment. Hereinafter, a different part from Embodiment 1 is demonstrated in detail.

  The elastic body 2 is provided with a cylindrical portion 28 that protrudes upward from the upper portion thereof. The inside of the cylindrical portion 28 communicates with the inner hole 20. The cylindrical portion 28 is formed so as to protrude upward through the space between the first protruding portion 15a and the second protruding portion 15b in a state where the elastic body 2 is mounted on the mounting seat 11.

  In the second embodiment, the engine cover 1 can be attached to the cylinder head 3 as in the first embodiment.

  On the other hand, after the engine cover 1 is attached to the cylinder head 3, the engine cover 1 moves downward in the same manner as in the first embodiment when an impact by an obstacle is received. As shown in FIG. 4D, when the amount of downward movement of the engine cover 1 increases, the spherical portion 34 of the columnar member 30 enters the cylindrical portion 28 of the elastic body 2. At this time, a sliding resistance is generated between the outer peripheral surface of the spherical portion 34 and the inner peripheral surface of the cylindrical portion 28 of the elastic body 2. Thereby, an impact is absorbed. Similarly to the first embodiment, the impact is also absorbed by the deformation of the first protrusion 15a and the second protrusion 15b of the stopper 15. That is, in the second embodiment, the impact is applied in stages when the spherical portion 34 of the columnar member 30 enters the cylindrical portion 28 of the elastic body 2 and when the first projecting portion 15a and the second projecting portion 15b are deformed. Absorbed.

  Therefore, also in the second embodiment, the stopper 15 for preventing the elastic body 2 from being detached from the mounting seat 11 of the engine cover 1 when the engine cover 1 is attached is provided. The elastic body 2 can be prevented from detaching when attached to 3. Since the stopper 15 can be deformed and displaced when the engine cover 1 moves in the direction approaching the cylinder head 3 due to the collision of an obstacle such as a pedestrian, the shock absorption during the collision of the obstacle is absorbed. It can be carried out.

  The cylindrical portion 28 may be a rectangular tube shape or a cylindrical shape.

(Embodiment 3)
FIGS. 5-7 shows the attachment structure of the engine cover concerning Embodiment 3 of this invention. In the third embodiment, the behavior of the columnar member 30 at the time of impact absorption is different from that of the first embodiment. Hereinafter, a different part from Embodiment 1 is demonstrated in detail.

  As shown in FIG. 5, the elastic body 2 is the same as that of the first embodiment.

  As shown in FIG. 6, the mounting seat 11 of the engine cover 1 is provided with a vertical wall 18 that connects the first connecting wall 13 and the second connecting wall 14. The lower end of the vertical wall 18 is continuous with the edge of the seat body 12 opposite to the notch 12b. An open portion on one side of the mounting seat 11 is closed by the vertical wall 18.

  Ribs 19 are provided on the back surface of the engine cover 1. As will be described in detail later, the rib 19 is a guide portion for guiding the columnar member 30 in the radial direction when the engine cover 1 moves in a direction approaching the cylinder head 3 due to an obstacle collision.

  As shown in FIG. 5, the rib 19 is positioned in the middle of the first connecting wall 13 and the second connecting wall 14 in the mounting seat 11. Moreover, the rib 19 and the 1st connection wall 13 and the 2nd connection wall 14 are substantially parallel. The rib 19 is continuous with the vertical wall 18.

  As shown in FIG. 6, the protruding amount of the rib 19 from the back surface of the engine cover 1 is the farther away from the vertical wall 18 (the more it goes to the left side in FIG. 6), that is, the open portion 12f of the mounting seat 11 (only in FIG. 6). The rib 19 has a substantially triangular shape in a side view.

  On the other hand, as shown in FIG. 7, the main body portion 33 of the columnar member 30 has a shape formed by bending a plate, and has first to fourth bent portions 33 a to 33 d. The board which comprises the main-body part 33 is so thin that it goes to the upper side, and the width | variety is narrow.

  The first bent portion 33a is provided in the vicinity of the lower end portion of the main body portion 33, and is used to bend the main body portion 33 when a predetermined force or more is applied to the main body portion 33 in the radial direction. is there. Similarly, the second to fourth bent portions 33b to 33d are for bending the main body portion 33, and are provided in order from the bottom to the top.

  In the third embodiment, the engine cover 1 can be attached to the cylinder head 3 in the same manner as the first embodiment.

  On the other hand, when the engine cover 1 is attached to the cylinder head 3 and receives an impact from an obstacle, the engine cover 1 moves downward as in the first embodiment, as shown in FIG. When the amount of downward movement of the engine cover 1 increases, the spherical portion 34 of the columnar member 30 enters the cylindrical portion 28 of the elastic body 2. At the same time, the lower edge portion of the rib 19 hits the cylindrical portion 28 of the elastic body 2, and the columnar member 30 inside the cylindrical portion 28 is pushed and guided toward the open portion 12 f side (the radial direction of the columnar member 30) of the mounting seat 11. . Accordingly, the first to fourth bent portions 33a to 33d of the columnar member 30 are bent, and the columnar member 30 is bent to the open side as a whole. Thereby, the columnar member 30 does not stretch on the back side of the engine cover 1, and the impact is absorbed.

  Therefore, in the third embodiment, as in the first embodiment, the stopper 15 is provided to prevent the elastic body 2 from being detached from the mounting seat 11 of the engine cover 1 when the engine cover 1 is mounted. The elastic body 2 can be prevented from being detached when the engine cover 1 is attached to the cylinder head 3. Since the stopper 15 can be deformed and displaced when the engine cover 1 moves in the direction approaching the cylinder head 3 due to the collision of an obstacle such as a pedestrian, the shock absorption during the collision of the obstacle is absorbed. It can be carried out.

  Further, the columnar member 30 is provided with first to fourth bent portions 33a to 33d, and a rib 19 for guiding the columnar member 30 in the radial direction is provided at a portion of the engine cover 1 facing the front end side of the columnar member 30. Therefore, the columnar member 30 can be bent at the time of an obstacle collision. Thereby, it can avoid that the columnar member 30 comes to stretch in the moving direction of the engine cover 1, and can improve shock absorption.

  In the third embodiment, since the columnar member 30 does not stretch, even if the distance between the seat main body 12 and the cover main body 10 of the mounting seat 11 is shortened and the size is reduced, the shock absorbing performance is ensured.

  Further, even if the columnar member 30 receives an impact, it only bends and does not break, so that the engine cover 1 is not easily detached from the cylinder head 3.

  In the third embodiment, the spherical portion 34 of the columnar member 30 may be protruded from the cylindrical portion 28 of the elastic body 2 so that the spherical portion 34 contacts the rib 19. Thereby, the columnar member 30 is directly guided by the rib 19.

  In the third embodiment, only one rib 19 is provided. However, the present invention is not limited to this. For example, two or more ribs are spaced apart from each other in the separating direction between the first connecting wall 13 and the second connecting wall 14. It may be provided open. This makes it possible to reliably guide the columnar member 30 when an obstacle collides, while making each rib thin and preventing the occurrence of sink marks on the surface of the engine cover 1.

(Embodiment 4)
FIG. 8 shows an engine cover mounting structure according to Embodiment 4 of the present invention. In the fourth embodiment, the behavior of the columnar member 30 at the time of impact absorption is different from that of the first embodiment. Hereinafter, a different part from Embodiment 1 is demonstrated in detail.

  The columnar member 30 is configured similarly to the third embodiment.

  A stopper portion 39 is provided on the back surface of the engine cover 1.

  The stopper portion 39 is positioned in the middle of the first connecting wall 13 and the second connecting wall 14 inside the mounting seat 11, and similarly to the rib 19 of the third embodiment, the first connecting wall 13 and the second connecting wall 13. It extends substantially parallel to the wall 14. The stopper portion 39 is continuous with the vertical wall 18. This vertical wall 18 may be omitted.

  The amount of protrusion of the stopper portion 39 from the back surface of the engine cover 1 is set so as to decrease as it moves away from the vertical wall 18 (as it goes to the left side in FIG. 8), that is, as it approaches the open portion 12f of the mounting seat 11. . Accordingly, the lower edge portion 39a of the stopper portion 39 extends upwardly toward the open portion 12f of the mounting seat 11, and the lower edge portion 39a will be described in detail later, but it is caused by the collision of an obstacle. When the engine cover 1 moves in a direction approaching the cylinder head 3, the guide portion of the present invention is configured to guide the columnar member 30 to the outside of the mounting seat 11.

  In the fourth embodiment, when the engine cover 1 is attached to the cylinder head 3 as in the first embodiment, the elastic body 2 is provided so that the stopper portion 39 faces the upper end surface of the elastic body 2. It hits the stopper 39. This prevents the elastic body 2 from being detached from the mounting seat 11 when the engine cover 1 is mounted. The strength is set so that the columnar member 30 is not bent by the force at the time of attachment.

  On the other hand, when the engine cover 1 is attached to the cylinder head 3 and receives an impact from an obstacle, the engine cover 1 moves downward as in the first embodiment, and the engine cover 1 moves downward. When the amount increases, the columnar member 30 is pushed toward the outside of the mounting seat 11 by the lower edge portion 39a of the stopper portion 39, and the force at this time is larger than that at the time of mounting. The fourth bent portions 33 a to 33 d are bent, and the columnar member 30 protrudes outward from the mounting seat 11 as a whole. At this time, the elastic body 2 extends. Thereby, the columnar member 30 does not stretch on the back side of the engine cover 1, and the impact is absorbed.

  Therefore, in the fourth embodiment, since the stopper portion 39 is provided for preventing the elastic body 2 from being detached from the mounting seat 11 of the engine cover 1 when the engine cover 1 is attached, the engine cover 1 is attached to the cylinder head 3. The elastic body 2 can be prevented from detaching when attached to the base. Since the columnar member 30 can be bent outward from the mounting seat 11 when the engine cover 1 moves in a direction approaching the cylinder head 3 due to the collision of an obstacle such as a pedestrian, Shock absorption can be performed.

  In the fourth embodiment, even if the rigidity of the stopper portion 39 and the first and second connecting walls 13 and 14 is increased, the shock can be reliably absorbed by bending the columnar member 30.

  Moreover, in the said Embodiment 3, 4, although the four bending parts 33a-33d are provided in the columnar member 30, not only this but only one bending part may be sufficient, and it is two. The number of the bent portions is not particularly limited.

  Moreover, although the plate | board thickness of the bending parts 33a-33d is so thick that it goes below, it may be the same thickness over the up-and-down both ends. Moreover, although the width | variety of the bending parts 33a-33d is so wide that it goes below, it may be the same width over the up-and-down both ends.

  In the first to fourth embodiments, the spherical portion 34 is provided at the tip of the columnar member 30, but a conical portion may be provided instead of the spherical portion 34.

  In the first to fourth embodiments, the mounting seat 11 is provided with the seat main body 12 and the two connecting walls 13 and 14 for connecting the seat main body 12 to the cover main body portion 10. Only one of 13, 14 may be provided. Further, only one of the two protruding portions 15a and 15b may be provided for the stopper portion 15 as well.

  Further, the stopper portion 15 has a first protruding portion 15a extending from the first wall portion 13 and a second protruding portion 15b protruding from the second wall portion 14 substantially parallel to the seat body 12, but the first protruding portion 15a and The 2nd protrusion part 15b may incline with respect to the seat main body 12. FIG. In this case, it is preferable that the end portions of the first projecting portion 15a and the second projecting portion 15b on the side of the notch portion 12b are inclined so as to be separated from the seat body 12 more than the end portion on the opposite side of the notch portion 12b. It is preferable. Since the first projecting portion 15a and the second projecting portion 15b are inclined as described above, the elastic body 2 and the columnar member 30 are easily displaced toward the cutout portion 12b when receiving an impact. 2 and the columnar member 30 are easily detached from the mounting seat 11, and therefore, it is easy to secure a stroke for absorbing an impact.

  Moreover, although the said embodiment demonstrated the case where protrusion part 15a, 15b which is the stopper part 15 bends when absorbing an impact, connecting wall 13 and 14 is attached to the attachment seat 11 without bending protrusion part 15a, 15b. The projections 15a and 15b may be displaced in a direction substantially perpendicular to the direction of impact by absorbing the impact by bending outward.

  Moreover, in the said Embodiment 1-4, the attachment seat 11 for attaching the elastic body 2 to the 1st member (engine cover 1) is provided, and the columnar member 30 is provided in the 2nd member (cylinder head 3). Although described above, the present invention can be applied to a structure in which the columnar member 30 is provided in the engine cover 1 and the attachment seat 11 for attaching the elastic body 2 to the cylinder head 3 is provided. . In this case, the first member is the cylinder head 3 and the second member is the engine cover 1.

  The present invention can also be applied, for example, when automobile interior materials (trims, covers, etc.) are attached to the vehicle body, and when exterior materials (bumpers, spoilers, outer plate members, etc.) are attached to the vehicle body. The applicable range is not limited to the above embodiment. In this case, the interior material and the exterior material correspond to the first member, and the vehicle body corresponds to the second member.

  Moreover, this invention is applicable when attaching various members other than a vehicle via an elastic body.

  As described above, the member mounting structure according to the present invention can be applied, for example, when an engine cover of an automobile is attached to an engine, or when an interior material or an exterior material is attached to a vehicle body.

1 Engine cover (first member)
2 Elastic body 3 Cylinder head (second member)
10 Cover body (main body)
11 Mounting seat 12 Seat body 12a Hole (fitting portion)
12b Notch part 13 1st connection wall (connection part)
14 Second connection wall (connection part)
15 stopper part 15a 1st protrusion part 15b 2nd protrusion part 19 Rib 20 Inner hole (insertion hole)
30 Columnar members 33a to 33d First to fourth bent portions 39 Stopper portion 39a Lower edge portion (guide portion)

Claims (6)

An elastic body is attached to a mounting seat provided in the first member, and a columnar member provided in the second member is inserted into an insertion hole formed in the elastic body, whereby the first member is inserted through the elastic body. In the attachment structure of the member configured to be attached to the second member,
The mounting seat has a seat body that is disposed away from the main body portion of the first member toward the second member side, and a connecting portion that connects the seat main body to the main body portion. A fitting portion to which the outer peripheral portion of the elastic body is fitted is formed,
The first member is disposed between the main body portion of the first member and the seat main body so as to face the surface of the elastic member in the insertion direction of the columnar member. A stopper portion for preventing the elastic body from being detached from the fitting portion is provided,
The stopper portion is configured to be displaced when the first member receives a force from the elastic body by moving in a direction in which the first member approaches the second member due to an obstacle collision. Mounting structure of the member to be performed. In the member mounting structure according to claim 1,
When the first member moves in the direction approaching the second member due to the collision of an obstacle, the elastic body moves with respect to the stopper portion while contacting the stopper portion. Mounting structure. In the attachment structure of the member of Claim 1 or 2,
The connecting portion of the mounting seat of the first member includes first and second wall portions arranged to face each other with a space therebetween,
The stopper portion includes a first projecting portion projecting from the first wall portion toward the second wall portion, and a second projecting portion projecting from the second wall portion toward the first wall portion. A member mounting structure characterized by comprising: In the attachment structure of the member as described in any one of Claim 1 to 3,
The columnar member is provided with a bent portion that bends when a predetermined force or more acts in the radial direction,
A guide for guiding the columnar member in the radial direction when the first member moves in a direction of approaching the second member due to an obstacle collision at a portion of the first member facing the tip side of the columnar member. A member mounting structure characterized in that a portion is provided. In the attachment structure of the member as described in any one of Claim 1 to 4,
The first member is an engine cover that covers an engine mounted on a vehicle. An elastic body is attached to a mounting seat provided in the first member, and a columnar member provided in the second member is inserted into an insertion hole formed in the elastic body, whereby the first member is inserted through the elastic body. In the attachment structure of the member configured to be attached to the second member,
The mounting seat has a seat body that is disposed away from the main body portion of the first member toward the second member side, and a connecting portion that connects the seat main body to the main body portion. A fitting portion to which the outer peripheral portion of the elastic body is fitted is formed,
The first member is disposed between the main body portion of the first member and the seat main body so as to face the surface of the elastic member in the insertion direction of the columnar member. A stopper portion for preventing the elastic body from being detached from the fitting portion is provided,
The stopper portion has a guide portion for guiding the columnar member to the outside of the mounting seat when the first member moves in a direction approaching the second member due to an obstacle collision, and the columnar member Is configured to bend toward a guide direction by the guide portion.

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