JP2018123859A - Vibration-isolating device with fastening member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-isolating device with a fastening member of a novel structure capable of fixing the separate fastening member simply and stably with respect to an attaching member as a die formed part of aluminum alloy.SOLUTION: In a vibration-isolating device 10 with a fastening member fabricated by fastening a separate fastening member 20 to an attaching member 16 of a vibration-isolation device main body 18, the attaching member 16 is a die formed part of aluminum alloy, a plurality of caulking claw parts 38, 38 projected from an abutting surface 39 on which the fastening member 20 is superimposed on the attaching member 16 to the outer side are confronted with each other and are integrally formed and respective caulked claw parts 38 are formed in such a tapered shape that a width size of a tip part 46 is smaller than a width size of a base end part 44 and, on the other hand, the plurality of caulked claw parts 38, 38 confronted to each other are thrown down to the opposite side to each other at a part on which the width size is smaller than the base end part 44 and are caulked and fixed by the fastening member 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration isolator that is applied to an engine mount of an automobile and the like, and relates to a vibration isolator with a fastening member in which a separate fastening member is fixed to a mounting member of a vibration isolator body.

  2. Description of the Related Art Conventionally, a vibration isolator that is interposed between members that constitute a vibration transmission system and that anti-vibrate and connect the components of the vibration transmission system to each other is known, and is applied to an engine mount or the like of an automobile. . As shown in Patent Document 1, the vibration isolator includes a second bracket, and the second bracket is attached to a component of a vibration transmission system such as a vehicle body.

  By the way, the 2nd bracket of patent document 1 is equipped with the rebound stopper part of a substantially portal shape, and while the both ends of this rebound stopper part are fixed to a vehicle body, it is the middle of a rebound stopper part. The portion is provided with an attachment portion fixed to the vehicle body. In the vibration isolator of Patent Document 1, the second bracket is an iron press fitting, and the attachment portion is integrally formed with the rebound stopper portion of the second bracket.

  However, since there is a high demand for weight reduction of vehicles, it has been studied to use an aluminum alloy whose specific gravity is smaller than iron for the second bracket. In this case, the second bracket is molded. Depending on the structure, the mounting portion may not be formed integrally.

  It is also conceivable to employ a separate fastening member that is fixed to the rebound stopper portion of the second bracket in place of the integral mounting portion. However, in order to fix a separate fastening member to the second bracket made of aluminum alloy with high strength, fixing parts such as bolts and nuts are further required, and the number of parts is increased and fixing is performed. The work was also complicated and easy.

Japanese Patent No. 5209339

  The present invention has been made in the background of the above-described circumstances, and the problem to be solved is to easily and stably fix a separate fastening member to an attachment member which is a molded product of an aluminum alloy. An object of the present invention is to provide a vibration isolator with a fastening member having a novel structure.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  That is, according to a first aspect of the present invention, in the vibration isolator with a fastening member in which a separate fastening member is fixed and attached to the attachment member of the vibration isolator main body, the attachment member is an aluminum alloy. A plurality of caulking claw portions projecting outward from a contact surface on which the fastening member is overlaid on the mounting member, and the caulking claw portions are formed integrally with each other. While the width of the distal end is smaller than the width of the base end, the plurality of caulking claws facing each other are tilted to the opposite sides in the small width of the width smaller than the base end. It is characterized by being caulked and fixed to the fastening member.

  According to such a vibration isolator with a fastening member structured according to the first aspect, a plurality of caulking claw portions that face each other are integrally formed with respect to the mounting member that is a molded product of an aluminum alloy. The fastening claws are caulked and fixed to the mounting member by the caulking claws because the caulking claws facing each other are tilted to the opposite sides. Thereby, it is possible to easily fix a separate fastening member with a small number of parts without using a separate fixing part such as a bolt with respect to the mounting member that is an aluminum alloy molded product. .

  Furthermore, the caulking claw portion has a tapered shape in which the width dimension of the distal end portion is smaller than the width dimension of the proximal end portion, and the caulking claw portion is bent at a small width portion having a smaller width dimension than the proximal end portion. Even if it is a caulking claw portion formed of an aluminum alloy that is easily damaged during plastic deformation as compared with iron, cracks and the like are prevented from occurring when it is collapsed.

  According to a second aspect of the present invention, in the vibration isolator with the fastening member described in the first aspect, the position of the caulking claw portion separated from the base end portion by the thickness dimension of the fastening member is in the protruding direction. The small width portion is used.

  According to the second aspect, the caulking claw part is fastened from the base end part at the caulking claw part because the caulking claw part is easily deformed at a position away from the base end part to the distal end side by the thickness dimension of the fastening member. Since the position away from the distal end side by the thickness dimension of the member is a small width portion, the caulking claw portion is unlikely to be damaged when being tilted.

  According to a third aspect of the present invention, in the vibration isolator with the fastening member described in the second aspect, the caulking claw portion has a tapered portion whose width dimension continuously decreases in the protruding direction. The narrow portion includes the tapered portion, and the surface of the fastening member is positioned at the tapered portion in the protruding direction of the caulking claw portion.

  According to the third aspect, the surface of the fastening member on the side opposite to the overlapping surface to the mounting member is located in the tapered portion that forms the narrow portion in the protruding direction of the caulking claw portion, whereby the caulking claw The bending deformation at the time of tilting the portion is caused by the tapered portion having a width dimension smaller than that of the base end portion, thereby preventing the occurrence of cracks in the caulking claw portion. In addition, since the width dimension of the caulking claw portion is continuously reduced in the protruding direction in the tapered portion, the occurrence of cracks due to stress concentration when the caulking claw portion is tilted is prevented.

  According to a fourth aspect of the present invention, in the vibration isolator with the fastening member described in any one of the first to third aspects, one surface in the width direction of the caulking claw portion is linear in the height direction. The other surface in the width direction has a tapered surface that has an inclination that gradually approaches the straight surface in the height direction, and the caulking claw portion is directed toward the straight surface side. It has been fixed by crimping.

  According to the fourth aspect, the caulking claw part is caulked and fixed to the fastening member by tilting the caulking claw part by a relatively small angle by making the surface of the caulking claw part to be tilted straight. Can do. In addition, since the other surface in the width direction of the caulking claw portion is a tapered surface, the width dimension of the portion that is deformed when the caulking claw portion is tilted is made smaller than the base end portion, and the caulking claw portion is tilted. It is possible to more advantageously prevent cracks at the time.

  According to a fifth aspect of the present invention, in the vibration isolator with the fastening member described in any one of the first to fourth aspects, the caulking claw portion is tilted at an inclination angle of 30 to 90 degrees, and It is caulked and fixed to the fastening member.

  According to the fifth aspect, the fastening member is caulked and fixed to the mounting member with a sufficiently large fixing strength by preventing the caulking claw portion from being excessively bent and preventing the caulking claw portion from being damaged. be able to.

  According to a sixth aspect of the present invention, in the vibration isolator with a fastening member described in any one of the first to fifth aspects, the fastening member corresponds to the plurality of caulking claw portions in the mounting member. A fixing hole is formed at a position where the fixing claw portion of the fastening member is inserted into the fixing hole, and the caulking claw portion inserted through the fixing hole is tilted to the opposite side. And are fixed by caulking to the fastening member.

  According to the sixth aspect, the caulking claw portion of the mounting member is tilted while being inserted into the fixing hole of the fastening member, so that the caulking claw portion is tilted and deformed while positioning the fastening member with respect to the mounting member to some extent. Can be made. Therefore, the fastening member can be easily caulked and fixed with respect to the mounting member at an appropriate position and orientation.

  According to the present invention, a plurality of caulking claw portions that are opposed to each other are integrally formed on the mounting member that is a molded product of an aluminum alloy, and the caulking claw portion has a width dimension of the distal end portion that is greater than a width dimension of the proximal end portion. Therefore, it is possible to obtain an aluminum alloy molded product by tilting the caulking claw part to the opposite side with a narrow part having a width dimension smaller than the base end part and fixing it to the fastening member. A separate fastening member can be easily fixed to the mounting member without damage.

The perspective view which shows the engine mount as 1st embodiment of this invention. It is a top view which shows the attachment member and fastening member which comprise the engine mount shown in FIG. 1, Comprising: The figure which shows the state before a crimping claw part is fallen. III-III sectional drawing of FIG. The fragmentary sectional view which expands and shows A of FIG. It is a top view which shows the engine mount shown in FIG. 1, Comprising: The figure which shows the state after the crimping nail | claw part was fallen. VI-VI sectional drawing of FIG. It is a top view which shows the attachment member and fastening member which comprise the vibration isolator with a fastening member as 2nd embodiment of this invention, Comprising: The figure which shows the state before a crimping claw part is fallen. VIII-VIII sectional drawing of FIG. Sectional drawing which shows the attachment member and fastening member which comprise the vibration isolator with a fastening member as 3rd embodiment of this invention. Sectional drawing which shows the attachment member and fastening member which comprise the vibration isolator with a fastening member as 4th embodiment of this invention. Sectional drawing which shows the attachment member and fastening member which comprise the vibration isolator with a fastening member as another embodiment of this invention. Sectional drawing which shows the attachment member and fastening member which comprise the vibration isolator with a fastening member as another one Embodiment of this invention. Sectional drawing which shows the attachment member and fastening member which comprise the vibration isolator with a fastening member as 5th embodiment of this invention. It is a top view which shows the attachment member and fastening member which comprise the vibration isolator with a fastening member as 6th embodiment of this invention, Comprising: The figure which shows the state before a crimping claw part is fallen.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows an engine mount 10 for an automobile as a first embodiment of a vibration isolator with a fastening member structured according to the present invention. The engine mount 10 includes a vibration isolator body 18 having a structure in which the mounting member 16 of the outer bracket 14 is mounted on the vibration isolation base 12, and a fastening member 20 is attached to the mounting member 16 of the vibration isolator body 18. In addition, the inner bracket 22 is attached to the vibration isolation base 12 of the vibration isolation device main body 18. In the following description, the vertical direction means the vertical direction in FIG. 1 in principle.

  More specifically, the vibration-proof base 12 has a structure in which an inner member (not shown) and a cylindrical outer member 24 are elastically connected to each other by a main rubber elastic body 26. For example, Japanese Patent No. 5209339 discloses A structure substantially the same as the mount body may be employed.

  An outer bracket 14 is attached to the vibration isolation base 12, and the outer bracket 14 includes an attachment member 16. The attachment member 16 has a substantially portal shape as a whole, and in this embodiment, a pair of leg portions 28, 28 arranged opposite to each other and a connecting portion 30 that connects the upper ends of the leg portions 28, 28 to each other. And. Furthermore, the lower end part of a pair of leg parts 28 and 28 is provided with the fixing piece 32 which protrudes outside in the opposing direction of these leg parts 28 and 28, respectively, and the bolt penetrated up and down in each fixing piece 32 A hole 34 is formed. Furthermore, the intermediate portions of the pair of leg portions 28, 28 protrude from the leg portions 28, 28 to one side in the length direction (see the arrow in FIG. 1) and are connected to each other. The stopper part 36 which comprises a bound stopper is provided.

  The attachment member 16 is an aluminum alloy molded product, and can be obtained by molding such as die casting or extrusion molding. Specifically, for example, after the portal portion is formed by extrusion molding, a separate stopper portion 36 is post-fixed to the portal portion by means such as welding, and the bolt holes 34, 34 can be obtained by cutting or the like. On the other hand, the attachment member 16 provided with the stopper portion 36 and the bolt holes 34 and 34 in advance can be formed by die casting.

  Furthermore, a pair of caulking claw portions 38, 38 are provided on the connecting portion 30 of the attachment member 16. As shown in FIGS. 2 and 3, the caulking claw portions 38 and 38 are integrally formed with the connecting portion 30 and protrude upward from the contact surface 39 that is the upper surface of the connecting portion 30, and have a substantially constant cross-sectional shape. It extends linearly in the length direction.

  Furthermore, the caulking claw portions 38 and 38 are arranged so as to face each other at a predetermined distance in the width direction (left and right direction in FIG. 2). The surface is a straight surface 40 extending linearly in the height direction (the protruding direction of the caulking claw portions 38, 38), and the inner surface in the width direction is directed to the straight surface 40 toward the protruding tip side in the height direction. The tapered surface 42 has a gradually approaching slope. Thereby, as shown in FIG. 4, the width dimension of each caulking claw portion 38 continuously decreases from the base end portion 44 toward the tip end portion 46, and the width dimension of the tip end portion 46 is set to the base end portion 44. It has a tapered shape made smaller than the width dimension.

  In the present embodiment, substantially the entire height direction excluding the base end portion 44 of the caulking claw portions 38 and 38 is a tapered portion 48 whose width dimension continuously decreases toward the distal end portion 46. The tapered portion 48 constitutes a small width portion 50 having a width dimension smaller than that of the base end portion 44. Therefore, a position of the caulking claw portions 38, 38 that is away from the base end portion 44 by the thickness dimension of the fastening member 20 is a part of the small width portion 50.

  Further, a fitting cylinder member 52 is attached to the attachment member 16. The fitting cylinder member 52 is a substantially cylindrical member formed of an aluminum alloy, and is arranged between the leg portions 28 and 28 at the middle portion in the vertical direction of the pair of leg portions 28 and 28. Extending in the direction. The fitting tube member 52 has an outer peripheral surface fixed to the opposing inner surfaces of the pair of leg portions 28 and 28 and an upper end fixed to the intermediate portion of the stopper portion 36, thereby fixing the mounting member. 16 is fixed.

  Further, the outer bracket 14 includes a fastening member 20. The fastening member 20 of the present embodiment has a longitudinal plate shape, and a fixing hole 54 is formed through one side in the length direction so as to penetrate vertically, and a substantially circular bolt on the other side in the length direction. A hole 56 is formed so as to penetrate vertically. As shown in FIGS. 2 and 3, the fixing hole 54 has a substantially rectangular hole cross-sectional shape as a whole, and the center portion in the width direction (left-right direction in FIG. 2) is more than both end portions in the width direction. Enlarged outward in the length direction. Furthermore, the fixing hole 54 has the caulking claw portions 38, 38 at positions corresponding to the caulking claw portions 38, 38 formed integrally with the connecting portion 30 in a state where the fastening member 20 to be described later is attached to the connecting portion 30. It is formed in a shape that can be inserted. The fastening member 20 of the present embodiment is an iron press fitting, but may be a molded product made of an aluminum alloy or a synthetic resin.

  The fastening member 20 is caulked and fixed to the mounting member 16 by a pair of caulking claw portions 38 and 38. That is, first, as shown in FIGS. 2 and 3, the fastening member 20 is superimposed on the contact surface 39 of the connecting portion 30 of the mounting member 16 from above, and the caulking claw portions 38 protruding from the connecting portion 30, 38 is inserted into the fixing hole 54 of the fastening member 20. The length dimension of the caulking claw portions 38, 38 is smaller than the internal dimension in the length direction of the fixing hole 54, and the distance in the width direction of the straight surfaces 40, 40 of the caulking claw portions 38, 38. Is smaller than the internal dimension in the width direction of the fixing hole 54, and the caulking claw portions 38, 38 can be easily inserted into the fixing hole 54.

  Further, since the caulking claw portions 38, 38 are tapered portions 48 that are gradually thinned toward the tip end side in substantially the entire protruding direction, the caulking claw portions 38, 38 are fixed holes 54 of the fastening member 20. In an inserted state, the upper surface, which is the surface of the fastening member 20, is located in the tapered portion 48 in the protruding direction of the caulking claw portions 38, 38.

  Next, as shown in FIGS. 5 and 6, the caulking claw portions 38 and 38 inserted through the fixing hole 54 are tilted to the opposite sides and are caulked and fixed to the fastening member 20. More specifically, for example, the jig 58 is inserted from above between the caulking claws 38 and 38 inserted through the fixing hole 54, and the caulking claws are pressed by the pressing inclined surfaces 60 and 60 of the jig 58. By pressing the portions 38 and 38 outward in the width direction, the caulking claw portions 38 and 38 are respectively tilted toward the opposite sides in the width direction toward the straight surface 40 side.

  In the present embodiment, the two caulking claws 38, 38 are simultaneously devised by the single jig 58 to the opposite sides to reduce the manufacturing process with a small number of jigs. The portions 38 may be tilted sequentially, or the caulking claw portions 38 may be tilted separately and simultaneously by a plurality of jigs. Further, the jig 58 has a lengthwise dimension larger than that of the caulking claw portions 38, 38, and the caulking claw portions 38, 38 abut against the jig 58 as a whole in the lengthwise direction. The lower end of the jig 58 is inserted into a portion of the fixing hole 54 in which the internal dimension in the length direction is expanded.

  Further, when the caulking claw portion 38 is pushed outward in the width direction by the jig 58, the whole is first collapsed and deformed, and the edge 62 of the fixing hole 54 located on the upper surface side of the fastening member 20 is straightened by the caulking claw portion 38. It abuts on the surface 40. Further, as the jig 58 further moves toward the approaching side with respect to the connecting portion 30, as shown in FIG. Thus, the inclination angle α on the projecting tip side of the caulking claw portion 38 with respect to the contact portion with the edge 62 is made larger than the inclination angle β on the base end side. Note that the inclination angles α and β of the caulking claw portion 38 are angles formed by the straight surface 40 of the caulking claw portion 38 after deformation with respect to the vertical direction.

  Thereby, the caulking claw portions 38 and 38 are bent so that the straight surface 40 side has a concave shape at an intermediate portion in the projecting direction, and the fastening member 20 and the caulking claw portion 38, It is pinched up and down between the front-end | tip parts of 38. As a result, the fastening member 20 is positioned with respect to the connecting portion 30 of the attachment member 16 by the caulking claw portions 38, 38, and the fastening member 20 is caulked and fixed to the attachment member 16.

  Further, the caulking claw portion 38 has a small width portion 50 having a width dimension smaller than that of the base end portion 44 at the contact portion with the edge 62, and is tilted so as to be bent at the small width portion 50. As described above, since the deformation of the caulking claw portion 38 is generated starting from the contact portion with the edge 62 that is thinner in the width direction than the base end portion 44, damage due to deformation of the caulking claw portion 38, etc. Is prevented. In particular, in the present embodiment, the entire caulking claw portion 38 is a tapered portion 48 whose width dimension continuously decreases in the protruding direction, and the caulking claw portion 38 has a sharp cross-sectional shape at the small width portion 50. Since stress concentration due to changes is avoided, damage to the narrow width portion 50 of the caulking claw portion 38 is unlikely to occur.

  Further, since the caulking claw portions 38 and 38 are inserted into the fixing hole 54 of the fastening member 20 before being deformed by being tilted, the relative displacement in the length direction and the width direction of the mounting member 16 and the fastening member 20 is achieved. The amount is limited by the contact between the caulking claw portions 38 and 38 and the inner peripheral surface of the fixing hole 54. Therefore, when the caulking claw portions 38, 38 are caulked and fixed to the fastening member 20, the mounting member 16 and the fastening member 20 are positioned in a simple manner in which the caulking claw portions 38, 38 are inserted into the fixing holes 54. The fastening member 20 can be fixed at an appropriate position with respect to the mounting member 16.

  In addition, the fastening member 20 is effectively fixed by the caulking claw 38 while suppressing the amount of deformation of the base end portion 44 of the caulking claw 38 by suppressing the caulking claw 38 toward the straight surface 40 side. Can do. As a result, the stress that acts intensively on the base end portion 44 of the caulking claw portion 38 when the caulking claw portion 38 falls down is reduced, and cracks and the like at the base end portion 44 of the caulking claw portion 38 are prevented. In addition, since the pressing inclined surface 60 of the jig 58 contacts the tapered surface 42 of the caulking claw portion 38, galling due to the edge of the caulking claw portion 38 is avoided, and the caulking claw portion 38 is properly tilted. In addition, the durability of the jig 58 can be improved.

  Furthermore, it is desirable that the inclination angle α on the protruding tip side of the caulking claw portion 38 with respect to the contact portion with the edge 62 is 30 degrees or more and 90 degrees or less, and more preferably 30 degrees or more and 60 degrees. Less than or equal to degrees. As a result, the fastening member 20 can be effectively caulked and fixed by the caulking claw portion 38 without excessively deforming the caulking claw portion 38, so that damage due to deformation of the caulking claw portion 38 can be prevented more advantageously. . In this embodiment, since the inclination angle of the pressing inclined surface 60 of the jig 58 with respect to the vertical direction is set to 45 degrees, the inclination angle α of the tip portion of the caulking claw portion 38 is set to about 45 to 50 degrees. ing.

  Since the caulking claw portion 38 of the present embodiment is tilted toward the straight surface 40 side, the distance between the caulking claw portion 38 before deformation and the edge 62 of the fastening member 20 can be reduced, and after deformation, Effective caulking and fixing can be realized while the inclination angle of the caulking claw portion 38 is relatively small.

  In addition, the outer bracket 14 formed by attaching the fitting cylinder member 52 and the fastening member 20 to the attachment member 16 as described above is fitted and fixed to the outer member 24 of the vibration-isolating base 12. It is attached to the vibration-proof substrate 12. An inner bracket 22 is attached to an inner member (not shown) of the vibration isolation base 12. The inner bracket 22 includes a fitting shaft portion (not shown) having a substantially rectangular shaft shape that is fitted to the vibration isolation base 12, and a thick plate-like attachment portion on the outer side in the length direction of the fitting shaft portion. 64. The inner bracket 22 extends in the length direction between the connecting portion 30 and the stopper portion 36 of the outer bracket 14 in the longitudinal direction when mounted on the vibration isolation base 12, and is longer than the stopper portion 36 of the outer bracket 14. Project to one of the sides.

  The inner bracket 22 is positioned with respect to a power unit (not shown) by a positioning pin 66 planted in the mounting portion 64, and a bolt (not shown) inserted through a bolt hole 68 provided in the mounting portion 64. Fixed. On the other hand, the outer bracket 14 is fixed to a vehicle body (not shown) by a bolt (not shown) in which the pair of fixing pieces 32, 32 of the mounting member 16 are inserted into the bolt holes 34, 34, and the fastening member 20 is a bolt. It is fixed by a bolt (not shown) inserted through the hole 56. As a result, the engine mount 10 is interposed between the power unit and the vehicle body, and the power unit and the vehicle body are connected in an anti-vibration manner by the engine mount 10.

  In such a state of being mounted on the vehicle, the outer bracket 14 is fixed to the vehicle body mainly by a pair of fixing pieces 32 and 32, and the fastening member 20 has a relatively small force shared in the mounting to the vehicle body. Has been. Therefore, the fastening member 20 is attached to the attachment member 16 with sufficient fixing strength by caulking and fixing by the caulking claw portion 38.

  The principal part of the vibration isolator with a fastening member as 2nd embodiment of this invention is shown by FIG. In addition, in the following description, about the member and site | part substantially the same as 1st embodiment, description is abbreviate | omitted by attaching | subjecting the same code | symbol in a figure. Moreover, about the part which is not shown in the figure, the structure substantially the same as 1st embodiment may be employ | adopted.

  More specifically, FIGS. 7 and 8 show the connecting portion 30 and the fastening member 72 of the mounting member 70. A pair of caulking claw portions 74 and 74 projecting upward are arranged opposite to each other in the width direction (left-right direction in FIG. 7) on the connecting portion 30 of the mounting member 70. As shown in FIG. 8, the caulking claw 74 has a straight surface 40 on the inner surface in the opposite direction and a tapered surface 42 on the outer surface in the opposite direction. It continuously decreases from 44 toward the protruding tip.

  The fastening member 72 has a substantially longitudinal plate shape as in the first embodiment, and penetrates vertically at one end in the longitudinal direction (vertical direction in FIG. 7) at the end in the width direction. Fixing holes 76 and 76 are formed. The fixing holes 76 and 76 are formed at the same position in the longitudinal direction, and the width dimension of the fastening member 72 is partially reduced in the portions where the fixing holes 76 and 76 are formed.

  Then, the fastening member 72 is overlapped with the connecting portion 30 of the attachment member 70 from above, and the pair of caulking claw portions 74 and 74 of the attachment member 70 are inserted into one of the fixing holes 76 and 76 of the fastening member 72. The caulking claw portions 74 and 74 inserted through the fixing holes 76 and 76 are tilted inward in the facing direction by a jig (not shown). Accordingly, the pair of caulking claw portions 74 and 74 are caulked and fixed to the fastening member 72, and the fastening member 72 is attached to the attachment member 70.

  In the present embodiment, in the process of tilting the pair of caulking claw portions 74, 74, the straight surfaces 40, 40 of the caulking claw portions 74, 74 are placed on each of the edges 62, 62 inside the fixing holes 76, 76 in the width direction. Abut. As a result, the pair of caulking claw portions 74, 74 are tilted at a tip portion protruding above the upper surface of the fastening member 72 at a larger inclination angle than the base end portion positioned below the upper surface of the fastening member 72. The tip portions of the caulking claw portions 74 and 74 are caulked and fixed to the fastening member 72.

  As can be understood from the structure of the present embodiment, the caulking claw portions 74 and 74 are tilted toward the inside in the facing direction if they are tilted to the opposite sides in the facing direction (width direction). You may do it.

  FIG. 9 shows an attachment member 80 constituting a vibration isolator with a fastening member as a third embodiment of the present invention. The attachment member 80 includes caulking claw portions 82 and 82. The caulking claw portions 82 of the present embodiment are tapered surfaces 42 whose both surfaces in the width direction are inclined in directions toward each other toward the protruding distal end side, and the width direction dimension of the protruding distal end portion is that of the base end portion 44. It is made smaller than the width direction dimension.

  Thus, the caulking claw portion does not need to have one surface in the width direction as the straight surface 40, and a taper surface or a step that changes the width dimension of the caulking claw portion can be provided on both surfaces.

  FIG. 10 shows an attachment member 90 constituting a vibration isolator with a fastening member as a fourth embodiment of the present invention. The attachment member 90 includes a caulking claw portion 92. In the caulking claw portion 92 of the present embodiment, one surface in the width direction is a straight surface 40, while the base end portion of the other surface in the width direction extends substantially parallel to the straight surface 40, and the other in the width direction The tip portion of the surface is a tapered surface 42 that is inclined in a direction approaching the straight surface 40 toward the protruding tip side. As a result, the caulking claw 92 has a straight portion 96 whose base end portion extends with a substantially constant width dimension in the projecting direction, and the distal end portion having the tapered surface 42 in the width direction toward the projecting distal end side. The tapered portion 48 is gradually thinned, and the tapered portion 48 constitutes a small width portion 50. Note that the surface of the fastening member 20 is disposed above the straight portion 96 and is positioned in the tapered portion 48 (small width portion 50) in the protruding direction of the caulking claw portion 92.

  As shown in the present embodiment, the entire caulking claw portion 92 does not necessarily have to be the tapered portion 48, and the protruding tip portion may be partially made the tapered portion 48.

  Further, like the caulking claw portion 100 shown in FIG. 11, a tapered portion 48 is provided at an intermediate portion in the protruding direction, and a thick straight shape having a substantially constant width dimension on the proximal end side of the tapered portion 48. The portion 102 may be provided, and the thin straight portion 104 having a substantially constant width may be provided on the tip side of the tapered portion 48. In the caulking claw portion 100 shown in FIG. 11, the small width portion 50 having a width dimension smaller than that of the base end portion 44 is configured by the tapered portion 48 and the thin straight portion 104, and the surface of the fastening member 20 is In the protruding direction of the caulking claw portion 92, it is positioned at the tapered portion 48 or the thin-walled straight portion 104.

  Further, a tapered portion 48 may be provided at the proximal end portion and a straight portion 96 may be provided at the distal end side of the tapered portion 48 as in the caulking claw portion 106 shown in FIG. Even when the tapered portion 48 is partially provided in the protruding direction of the caulking claw portion 92, both sides in the width direction of the tapered portion 48 can be used as the tapered surface 42. In the caulking claw portion 106 of the present embodiment, the small width portion 50 includes a tapered portion 48 and a straight portion 96 excluding the base end portion 44.

  FIG. 13 shows an attachment member 110 constituting a vibration isolator with a fastening member as a fifth embodiment of the present invention. The caulking claw portion 112 provided in the mounting member 110 of the present embodiment has one surface in the width direction as a straight surface 40, while the other surface in the width direction has a stepped surface at an intermediate portion in the protruding direction. 114 is provided, and both sides of the stepped surface 114 in the protruding direction of the caulking claw 112 are flat surfaces extending substantially parallel to the straight surface 40. As a result, the caulking claw 112 has a width dimension on the projecting tip side with respect to the step surface 114 smaller than a width dimension on the base end side with respect to the step surface 114. In short, the caulking claw portion 112 has a width dimension that changes in two steps on the stepped surface 114, and the base end side of the stepped surface 114 is a thick straight portion 102 having a substantially constant width dimension in the protruding direction. In addition, a thin straight portion 104 having a substantially constant width dimension in the protruding direction is formed on the tip side of the step surface 114. Accordingly, the width of the distal end portion of the caulking claw portion 112 that is the thin straight portion 104 is made smaller than the width of the proximal end portion of the caulking claw portion 112 that is the thick straight portion 102. In the caulking claw portion 112, the small width portion 50 is composed of a thin straight portion 104 above the step surface 114, and the surface of the fastening member 20 is positioned at the thin straight portion 104 in the protruding direction of the caulking claw portion 112. I'm hurt.

  As can be understood from this embodiment, if the caulking claw is a tapered shape in which the width dimension of the distal end portion 46 is smaller than the width dimension of the proximal end portion 44, the width dimension is continuously reduced in the protruding direction. It does not have to be. In short, the caulking claw portion may be stepped and the width dimension may gradually decrease toward the distal end portion 46, or may be tapered and the width dimension may continuously decrease toward the distal end portion 46. It may be.

  In each of the embodiments shown in FIGS. 10, 11, and 13, the entire one surface in the width direction of the caulking claw portion is a straight surface 40, but for example, the other in the width direction gradually toward the tip side. A tapered surface 42 inclined to the side may be provided.

  FIG. 14 shows an attachment member 120 and a fastening member 122 constituting a vibration isolator with a fastening member as a sixth embodiment of the present invention. The caulking claw portions 124 and 124 provided on the mounting member 120 of the present embodiment face each other in the left-right direction in FIG. 14 and extend in an inclined manner rather than parallel to each other. In the present embodiment, the distance between the caulking claw portions 124 and 124 gradually increases toward one side in the length direction (the lower side in FIG. 14). The caulking claw portion 124 can adopt the same cross-sectional shape as the caulking claw portion shown in the first to fifth embodiments.

  Further, the caulking claw portions 124 and 124 are inserted through a fixing hole 126 formed through the fastening member 122. The fixing hole 126 of the present embodiment has a width dimension that gradually increases toward one side in the length direction, so that the caulking claw portions 124 can be inserted.

  The caulking claw portions 124, 124 inserted through the fixing hole 126 are tilted toward opposite sides, and are caulked and fixed to the fastening member 122 at the opening peripheral edge portion of the fixing hole 126. In the present embodiment, since the caulking claw portions 124 and 124 are inclined and spread, they are tilted toward the opposite sides in the respective width directions and are caulked and fixed to the fastening member 122.

  In this way, the caulking claw portions do not necessarily face each other in parallel, and may be arranged so as to extend relatively inclined and face each other. In addition, when employ | adopting the caulking claw part which inclines relatively and spreads, the relative inclination angle of these caulking claw parts is not specifically limited, What is necessary is just to distribute | arrange so that it may mutually oppose.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, you may provide the taper-shaped part 48 in the several location of a protrusion direction in a crimping nail | claw part. Further, a plurality of step surfaces 114 can be provided in the caulking claw portion. In addition, the stepped surface 114 and the tapered surface 42 may be used in combination in one caulking claw portion. For example, the stepped surface 114 is provided on one surface in the width direction of the caulking claw portion, and the tapered surface is formed on the other surface. 42 can also be provided.

  Moreover, it is not necessarily limited to the structure in which only two caulking claw portions are provided to face each other, and three or more caulking claw portions can be arranged to face each other. Specifically, for example, two caulking claw portions having a small length dimension are arranged side by side in the length direction, and the two short caulking claw portions are arranged in the width direction with one caulking claw portion having a large length dimension. It is also possible to arrange the three caulking claws so as to face each other. In this case, for example, the fastening member can be caulked and fixed more firmly to the mounting member by arranging the two short caulking claws so as to be inclined with respect to each other.

  Further, the caulking claw portion is not necessarily provided at the central portion of the connecting portion 30 of the mounting member 16 but may be provided at the end portion of the connecting portion 30 or may be provided at the pair of leg portions 28 and 28. . In addition, the specific structure of the attachment member 16 is not limited to the portal shape shown in the above embodiment, and can be changed as appropriate.

  Further, in the above-described embodiment, the caulking claw portions 38, 38 are provided so as to face each other in the extending direction of the connecting portion 30 (opposite direction of the leg portions 28, 28). Can be provided so as to face each other in a direction orthogonal to the direction in which the connecting portion 30 extends. In short, the facing direction of the plurality of caulking claws is not particularly limited, and is set in consideration of the ease of forming the mounting member, the direction of the force acting on the fastening member, and the like.

  In addition, the fixing hole of the fastening member is not essential. For example, a pair of caulking claw portions are arranged on the outer side in the width direction of the fastening member so that the caulking claw portion is caulked and fixed to the end portion in the width direction of the fastening member. Also good. Note that the specific structure of the fastening member is merely an example, and can be appropriately changed according to the attachment structure to the vehicle body.

10: engine mount (vibration isolation device with fastening member), 16, 70, 80, 90, 110, 120: mounting member, 18: vibration isolation device body, 20, 72, 122: fastening member, 38, 74, 82 , 92, 100, 106, 112, 124: caulking claw portion, 39: contact surface, 40: straight surface, 42: taper surface, 44: proximal end portion, 46: distal end portion, 48: tapered portion, 50: Narrow part, 54, 76, 126: fixing hole

Claims (6)

In the vibration isolator with a fastening member that is mounted with a separate fastening member fixed to the mounting member of the vibration isolator body,
The mounting member is an aluminum alloy mold;
In the mounting member, a plurality of caulking claw portions projecting outward from a contact surface on which the fastening member is overlaid are integrally formed to face each other, and each caulking claw portion is formed from a width dimension of a base end portion. While the width of the tip is a small tapered shape,
A vibration isolator with a fastening member, wherein a plurality of caulking claw portions facing each other are crimped and fixed to the fastening member by being tilted to opposite sides in a small width portion having a smaller width than the base end portion.   2. The vibration isolator with a fastening member according to claim 1, wherein a position separated from the base end portion in the protruding direction by a thickness dimension of the fastening member in the caulking claw portion is the small width portion.   The caulking claw portion has a tapered portion whose width dimension continuously decreases in the protruding direction, and the small width portion includes the tapered portion, and in the protruding direction of the caulking claw portion. The vibration isolator with a fastening member according to claim 2, wherein a surface of the fastening member is positioned at the tapered portion. One surface in the width direction of the caulking claw portion has a straight surface extending linearly in the height direction, while the other surface in the width direction has a tapered surface having an inclination gradually approaching the straight surface in the height direction. Have
The vibration isolator with a fastening member according to any one of claims 1 to 3, wherein the caulking claw portion is tilted toward the straight surface side and fixed by caulking.   The vibration isolator with a fastening member according to any one of claims 1 to 4, wherein the caulking claw portion is tilted at an inclination angle of 30 to 90 degrees and is caulked and fixed to the fastening member.   A fixing hole is formed in the fastening member at a position corresponding to the plurality of caulking claw portions in the mounting member, and the caulking claw portion of the mounting member is inserted into the fixing hole of the fastening member, The vibration isolator with a fastening member according to any one of claims 1 to 5, wherein the caulking claw portions inserted through the fixing holes are tilted opposite to each other and are caulked and fixed to the fastening member.

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