JP5832770B2 - Exhaust pipe support - Google Patents

Description

  The present invention relates to an exhaust pipe support that supports an exhaust pipe on the body of an automobile.

  As an exhaust pipe support for supporting an exhaust pipe on the body of an automobile, an exhaust pipe support having a rubber body attached to the vehicle body via a bracket or a leaf spring and an exhaust pipe attached to an attachment hole formed in the rubber body is provided. It is known (for example, see Patent Documents 1 to 3).

  In the case of a structure in which a rubber body is attached to a leaf spring as in Patent Document 1, it is necessary to attach the leaf spring to the housing, form a stopper rubber, and the like, which complicates the configuration. Further, as in Patent Documents 2 and 3, when the mounting hole is formed in the rubber body filled in the bracket fixed to the vehicle body side, the position of the mounting hole is fixed with respect to the vehicle body, and the member on the exhaust pipe side is fixed. If the position is shifted, it may be difficult to insert into the mounting hole.

JP 7-133719 A JP-A-6-280555 Japanese Utility Model Publication No. 57-46020

  In view of the above-described facts, an object of the present invention is to provide an exhaust pipe support that allows easy attachment of an exhaust pipe side member with a simple configuration.

The exhaust pipe support according to claim 1 comprises an elastic main body portion having elasticity, a mounting hole formed integrally with the elastic main body portion, to which the exhaust pipe side member is mounted, and the position of the mounting hole is An elastic member having a support portion elastically movable relative to the elastic main body portion, a bottom surface portion, a pair of side surface portions erected from both sides of the bottom surface portion, and the side surface A vehicle body mounting member provided at a tip of the portion and attached to the vehicle body, and the side surface portion is configured between the bottom surface portion and at least a part of the elastic main body portion is press-fitted. A press-fitting receiving part to be attached; a constricted part formed on the distal end side of the side face part with respect to the press-fitting receiving part; a width between the pair of side face parts being narrower than the press-fitting receiving part; and a distal end side with respect to the constricted part to the relative movement outwardly relative to said support portion is configured During disposed to have a, a stopper portion for preventing the relative movement of more than a predetermined amount of the elastic main body portion and the support portion, the pair of side surface portions spacing of each other, the said side portions than the constricted portion The tip side is wide .

  In the exhaust pipe support according to the first aspect, the elastic main body portion is press-fitted into the press-fitting receiving portion of the vehicle body attachment member and attached to the vehicle body attachment member. Therefore, the elastic main body can be easily attached to the vehicle body attachment member. Also, compared to the case where the elastic main body is bonded to the vehicle body mounting member without being press-fitted, the damage due to the tension of the elastic main body when moving away from the vehicle body mounting portion during vibration input is suppressed. Can do. Further, the elastic member can be easily formed by integrating the elastic main body portion and the support portion.

  Moreover, the position of the attachment hole to which the exhaust pipe side member of the support portion is attached is elastically movable relative to the elastic main body portion. Therefore, when the exhaust pipe side member is inserted into the attachment hole, the position of the attachment hole can be moved in accordance with the position of the exhaust pipe side member, and attachment can be performed easily.

Further , the side surface portion is erected from both ends of the bottom surface portion, and the press-fitting receiving portion is simply configured between the bottom surface portion and the side surface portion, and the width between the side surface portions is closer to the tip side than the press-fitting receiving portion in the side surface portion. A constricted portion is formed which is narrower than the press-fitting receiving portion. Therefore, at least a part of the elastic main body part press-fitted into the press-fitting receiving part is locked by the constricted part, and the elastic main body part can be prevented from being detached from the press-fitting receiving part.
In addition, a stopper portion that is spaced apart from the support portion on the outer side in the relative movement direction is formed on the tip side of the constricted portion of the side surface portion. The stopper portion prevents relative movement exceeding a predetermined amount between the support portion and the elastic main body portion. In this way, by forming the stopper portion on the vehicle body attachment member, it is possible to prevent excessive relative movement between the support portion and the elastic main body portion with a simple configuration.

Further, the width between the pair of side surface portions is formed wider at the tip side than the constricted portion at the side surface portion . Therefore, the attachment port of the elastic member to the vehicle body attachment member can be widened, and the attachment operation can be easily performed.

  As described above, according to the exhaust pipe support according to the present invention, the exhaust pipe side can be easily attached with a simple configuration.

It is a perspective view which shows the exhaust pipe support tool which concerns on embodiment of this invention. It is a perspective view which shows separately the vehicle body attachment member and elastic member of the exhaust pipe support which concern on embodiment of this invention. It is a front view which shows the exhaust pipe support tool which concerns on embodiment of this invention. It is a front view which shows the exhaust pipe support tool which concerns on the modification of embodiment of this invention. It is a front view which shows the exhaust pipe support tool which concerns on the other modification of embodiment of this invention. It is a front view which shows the exhaust pipe support tool which concerns on the other modification of embodiment of this invention.

  Hereinafter, an exhaust pipe support according to an embodiment of the present invention will be described with reference to the drawings. In addition, the arrow X suitably shown in each figure shows a horizontal direction, the arrow Y shows the horizontal direction orthogonal to the arrow X direction, and the arrow Z demonstrates below as a perpendicular direction (up-down direction).

  As shown in FIGS. 1 to 2, the exhaust pipe support 10 according to the present embodiment includes a vehicle body attachment member 12 and an elastic member 20.

  The vehicle body attachment member 12 has a plate shape and is bent in a substantially U shape. In the present embodiment, the front direction of the U-shape is the arrow Y direction. A bottom surface portion 16 is formed on the U-shaped bottom portion of the vehicle body attachment member 12, and a pair of side surface portions 18 are formed on U-shaped side portions bent from both ends of the bottom surface portion 16. A bottom convex portion 16 </ b> A that rises in the same direction as the side surface portion 18 is formed at the center of the bottom surface portion 16. An attachment portion 14 for attaching to the vehicle body extends from the distal end side of each side surface portion 18. The mounting portion 14 has a hole 14A for mounting to the vehicle body via a bolt (not shown). The bottom surface portion 16, the side surface portion 18, and the mounting portion 14 of the vehicle body mounting member 12 are integrally formed. The vehicle body attachment member 12 can be made of metal, resin, or the like.

  A pair of extending plate portions 17 is formed on both sides in the width direction on the bottom surface portion 16 side of each side surface portion 18. The extension plate portion 17 is formed to extend from the side surface portion 18 and is bent in a direction along the end side of the bottom surface portion 16. On the tip side (mounting portion 14 side) of the side plate 18 with respect to the extended plate portion 17, the width between the pair of side plates 18 is narrower than the portion where the extended plate portion 17 is formed. 18K is configured. The pair of side surface portions 18 are inclined so that the distance between the pair of side surface portions 18 gradually increases from the constricted portion 18K toward the distal end side (attachment portion 14 side). Hereinafter, the portion of the side surface portion 18 on the tip side with respect to the constricted portion 18K is referred to as a “stopper portion 18S”.

  As shown in FIG. 2, a press-fit receiving portion 15 into which a press-fit portion 24 of an elastic main body portion 22 to be described later is press-fitted is formed inside the bottom surface portion 16, the side surface portion 18, and the extending plate portion 17. . A press-fit space R <b> 1 is formed on the inner side surrounded by the press-fit receiving portion 15. The press-fitting space R1 here refers to a space between the side surface portions 18 that is configured on the bottom surface portion 16 side with respect to the constricted portion 18K. A movable space R2 is formed between the stopper portions 18S facing each other outside the press-fit space R1. Here, press-fitting means that the elastic main body portion 22 is disposed in the press-fitting space R1 in a state of being compressed and deformed. In the present embodiment, the elastic main body portion 22 is compressed and deformed so that the maximum length D1 in the X direction and the maximum length D2 in the Y direction of the elastic main body portion 22 before assembly to the vehicle body attachment member 12 are reduced. It is arranged in the state. In addition, the width D3 in the Y direction on the top portion 26 side of the press-fit portion 24 of the elastic main body portion 22 is narrower than the maximum length D2 in the Y direction of the press-fit portion 24 before press-fit.

  The elastic member 20 includes an elastic main body portion 22 and a support portion 30. The elastic main body portion 22 has a bifurcated substantially inverted V shape, and a press-fit portion 24 is formed at each of the inverted V-shaped bifurcated tips. As shown in FIG. 1, each press-fitting part 24 is press-fitted into the press-fitting space R <b> 1 while being pressed against the bottom part 16, the side part 18, and the extension plate part 17. In addition, the elastic main body portion 22 is disposed so that the V-shaped open side becomes a concave portion 22 </ b> A and faces the bottom surface portion 16 side, and is attached to the vehicle body attachment member 12. The bottom surface portion 16 and the concave portion 22A of the elastic main body portion 22 are separated from each other to form a separation portion R1-A. The elastic center 22 </ b> G of the elastic main body 22 is set near the middle portion of the inverted V-shape of the elastic main body 22.

  A support portion 30 is integrally connected to the elastic main body portion 22 at the inverted V-shaped top portion 26 of the elastic main body portion 22. The support portion 30 has a cylindrical shape, and an attachment hole 32 that is a cylindrical hole is formed in the cylindrical axis S direction. The support portion 30 is disposed so that the cylinder axis S faces in the Y direction, and is connected to the inverted V-shaped top portion 26 of the elastic main body portion 22 at the outer peripheral side wall. The support portion 30 is disposed in the movable space R2 outside the press-fit space R1, and is separated from the stopper portion 18S of the side surface portion 18. The support portion 30 can swing in the direction of the arrow W elastically with respect to the elastic main body portion 22 by elastic deformation of the elastic main body portion 22 and the support portion 30 near the top portion 26. When the swing amount exceeds the distance L <b> 1 between the support portion 30 and the stopper portion 18 </ b> S, the support portion 30 hits the stopper portion 18 </ b> S and is prevented from excessively moving relative to the elastic main body portion 22. The rotation center of the swing of the support part 30 is set to be in the vicinity of the elastic center 22G. By setting the vicinity of the elastic center 22G as the rotation center of the swing of the support portion 30, the rotation can be smoothly performed.

  The elastic main body portion 22 and the support portion 30 can be made of an elastic rubber material, resin material, or the like. As the rubber material, EPDM, natural rubber, or the like can be used. An elastomer or the like can be used as the resin material.

  Next, the operation of the exhaust pipe support 10 according to the present embodiment will be described.

  When the elastic member 20 is attached to the vehicle body attachment member 12, as shown in FIG. 2, the press-fitting portion 24 of the elastic member 20 is press-fitted into the press-fitting space R1, and the bottom portion 16, the side portion 18, and the extension Crimp to the plate part 17. By press-fitting in this way, the elastic member 20 can be easily attached to the vehicle body attachment member 12. In this state, the support portion 30 is disposed in the movable space R2. Moreover, since the front end side (attachment portion 14 side) of the stopper portion 18S is widened, the press-fitting operation can be easily performed for the interval between the pair of side surface portions 18.

  Next, the attachment part 14 of the vehicle body attachment member 12 is attached to the vehicle body side via a bolt (not shown). Then, a member (not shown) on the exhaust pipe side is inserted into the mounting hole 32 of the support portion 30. Here, since the support part 30 can be rotated in the arrow W direction around the elastic center 22G of the elastic main body part 22 in the movable space R2, the support part is provided according to the displacement of the exhaust pipe side member. By moving the position of the 30 mounting holes 32, the exhaust pipe side member can be inserted and mounted easily.

  When vibration is input from the exhaust pipe side or the vehicle body side during driving of the vehicle, this vibration is transmitted to the elastic member 20. In the elastic member 20, the elastic main body 22 is mainly elastically deformed, and the vibration is attenuated by internal friction.

  In the present embodiment, the elastic body 22 has the recess 22A and a gap between the bottom 16 and the spring constant of the elastic body 22 can be kept low. In addition, by changing the shape of the recess 22A of the elastic main body 22, the damping characteristic of the elastic main body 22 can be easily tuned.

  If there is an excessive relative movement in the vertical direction (Z direction) between the exhaust pipe and the vehicle body, the elastic main body portion 22 hits the bottom convex portion 16A, the upper side of the support portion 30 hits a vehicle body side member (not shown), and the exhaust pipe Excessive relative movement with respect to the vehicle body can be suppressed.

  Further, if there is excessive relative vibration exceeding the distance L1 in the left-right direction (X direction) between the exhaust pipe and the vehicle body, the side portion of the support portion 30 hits the stopper portion 18S and excessive relative movement of the exhaust pipe with respect to the vehicle body. Can be suppressed.

In this embodiment, since the elastic main body 22 is attached to the vehicle body attachment member 12 by press-fitting, compared to a case where the elastic main-body part 22 is attached only by adhesion such as vulcanization adhesion without being press-fitted, when vibration is input. In this case, it is possible to suppress damage due to the tension of the elastic main body 22 when moving in a direction away from the vehicle body mounting member 12. In the present application, vulcanization adhesion and adhesion by an adhesive are not excluded, and the elastic main body 22 is in a press-fitted state even when vulcanization adhesion or adhesion is performed by an adhesive. It includes being attached.
At this time, since the space between the side surface portion 18 above the press-fit space R1 is narrowed by the constricted portion 18K, the press-fit portion 24 is prevented from being detached from the press-fit space R1 in the Z direction.

  As shown in FIG. 4, the plurality of convex portions 34 are formed on the outer surface of the support portion 30 of the present embodiment, so that the support portion 30 is in the bottom during the above-described vertical movement and horizontal movement. The impact at the time of hitting the convex portion 16A and the stopper portion 18S can be reduced.

  Further, in the present embodiment, the pair of stopper portions 18S are inclined so that the distance from each other gradually increases from the constricted portion 18K toward the tip side, but this configuration is not necessarily required. As shown in FIG. 5, you may arrange | position so that the stopper part 18S may become mutually parallel. That is, the stopper portion 18 </ b> A disposed at the intermediate portion of the side surface portion 10 can be made narrower than the upper and lower end portions of the side surface portion 10. Also in this case, the front end side of the pair of side surface portions 18 (the portion that does not contribute to the movement restriction of the support portion 30 on the mounting portion 14 side) is made wider than the interval between the stopper portions 18S, so that the front end side is the stopper. Compared to the case where the interval is the same as the portion 18S, the press-fitting work of the elastic member 20 into the press-fitting space R1 can be easily performed.

  In the present embodiment, the elastic main body portion 22 is formed in an inverted V shape. However, as shown in FIG. 6, the elastic main body portion 23 has a shape in which no space is formed between the elastic main body portion 22 and the bottom surface portion 16. It can also be.

  In the present embodiment, the extension plate portion 17 integrally bent from the side surface portion 18 has been described. However, the extension plate portion 17 may be integrally extended from the bottom surface portion 16 and bent. Good. Further, the extension plate portion 17 is not necessarily required, and a configuration in which the extension plate portion 17 is not formed may be employed. By forming the extension plate portion 17 as in the present embodiment, the elastic body portion 22 press-fitted into the press-fit space R1 can be prevented from coming off in the Y direction.

DESCRIPTION OF SYMBOLS 10 Exhaust pipe support 12 Car body attachment member 14 Attachment part 16 Bottom part 18S Stopper part 18 Side part 20 Elastic member 22 Elastic main body part 23 Elastic main body part 30 Support part 32 Attachment hole 34 Protrusion R1 Press-fit space R1-A Separation part

Claims (1)

An elastic main body having elasticity and a mounting hole formed integrally with the elastic main body and to which the exhaust pipe side member is mounted are configured, and the position of the mounting hole is elastically relative to the elastic main body. An elastic member having a support portion that is movable;
A vehicle body mounting member having a bottom surface portion, a pair of side surface portions erected from both end sides of the bottom surface portion , and an attachment portion provided at a distal end of the side surface portion and attached to the vehicle body;
And the side surface portion is formed between the bottom surface portion and a press-fitting receiving portion to which at least a part of the elastic main body portion is press-fitted and attached, and is formed closer to the distal end side of the side surface portion than the press-fitting receiving portion. A narrow portion between the pair of side surface portions, which is narrower than the press-fitting receiving portion, and a distal end side than the constricted portion, and spaced apart from the support portion in the relative movement direction. have a, and a stopper portion for preventing the relative movement of more than a predetermined amount of the elastic body section, said pair of side portions the interval between the exhaust gas the distal end side of the side portion than the constricted portion is wider Tube support.

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