JP2010242792A - Engine mount - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine mount restraining the movement of a bolt when fastening an engine mount body and a bracket by the bolt. <P>SOLUTION: This engine mount 10 regulates co-rotation of a nut 68 when a regulating piece 90 formed in a second bracket 50 interferes with an extension part 82 arranged in the nut 68. Here, a forming position of the regulating piece 90 is set so that the regulating piece 90 abuts on the extension part 82 when the extension direction of the extension part 82 from a flange part 80 becomes the substantially same direction as the longitudinal direction of an elongate hole 62 formed in a connecting piece 58. Thus, pressing reaction applied to the extension part 82 when the regulating piece 90 interferes with the extension part 82, does not contribute to the movement of the bolt 66 in the longitudinal direction of the elongate hole 62. Thus, when fastening the second bracket 50 and the engine mount body 12 by the bolt 66 and the nut 68, the movement of the bolt 66 in the longitudinal direction of the elongate hole 62 can be prevented or restrained. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an engine mount that connects an engine and a vehicle body and elastically holds the engine on the vehicle body.

  In the engine mount disclosed in the following Patent Document 1, mount brackets that are fixed to the engine are provided on both sides in the axial direction of the inner cylinder portion disposed inside the outer cylinder body. Mounting holes are formed in these mounting brackets, and a fixing bolt that passes through the mounting hole of one mounting bracket passes through the inner cylinder and further passes through the mounting hole of the other mounting bracket. A nut is screwed onto the front end of the fixing bolt that passes through the mounting hole of the other mounting bracket. This connects the mounting bracket to the inner cylinder, and the mounting bracket, inner cylinder, mount rubber, outer The engine is elastically held on the vehicle body via the cylindrical body and the extending portion.

Japanese Utility Model Publication No. 6-35692

  By the way, when the inner cylinder body and the mount bracket are fastened and fixed by screwing the nut to the bolt as described above, the bolt is rotated with a tool such as a wrench. If so-called “co-rotation” occurs in which the nut rotates together with the bolt during the fastening operation, the work efficiency deteriorates. For this reason, for example, the arm portion is extended from the nut toward the outer side in the rotational radius direction of the bolt, and the interference portion is provided on the rotation locus of the arm portion when the above-described co-rotation in the mounting bracket occurs in the nut. When the arm portion rotates together with the rotating nut, the interference portion interferes with the arm portion to restrict the rotation of the arm portion, that is, the rotation of the nut.

  However, in such a restricted regulation structure, there is a possibility that the nut and the bolt move inside the mounting hole due to a reaction force received from the interference portion when the arm portion to be rotated is interfered with the interference portion. When the bolt thus moved presses the inner peripheral portion of the inner cylinder portion and presses the mount rubber interposed between the inner cylinder portion and the outer cylinder portion, the mount rubber is elastically deformed. As a result, the engine The spring characteristics of the mount will change.

  In view of the above fact, an object of the present invention is to obtain an engine mount that can suppress the movement of the bolt when the engine mount body and the bracket are fastened with the bolt.

  An engine mount according to a first aspect of the present invention includes a first bracket that is fixed to a vehicle body or a vehicle engine, and an elastic member. The engine mount is fixed to the first bracket, and a bolt passes therethrough. An engine mount body in which a hole is formed, and is fixed to a side of the vehicle body and the engine where the first bracket is not fixed, and a long hole through which the bolt passes is formed. The engine mount main body is fastened and fixed by screwing a nut to the bolt that penetrates both of the holes, and the second bracket is elastically connected to the first bracket via the engine mount main body. And in the rotational direction of the bolt on both sides of a virtual line that intersects the longitudinal direction of the elongated hole with respect to the central axis of the bolt in the longitudinal direction of the elongated hole, respectively. Provided in the second bracket within a range of 5 degrees, directly or indirectly interfering with either one of the bolt and the nut, so that the bolt and the nut rotate together when fastened. And a regulating section for regulating.

  In the engine mount according to the first aspect, the first bracket is fixed to the vehicle body or the engine of the vehicle, and the second bracket is fixed to the vehicle body and the engine of the vehicle where the first bracket is not fixed. An engine mount body having an elastic member is fixed to the first bracket, and a bolt passes through a hole formed in the engine mount. The above-mentioned second bracket is formed with a long hole through which the bolt penetrates, and is tightened by screwing a nut into a bolt penetrating both the hole of the engine mount body and the long hole of the second bracket. Thus, the second bracket is fastened and fixed to the engine mount body. In this manner, the first bracket and the second bracket are elastically connected via the engine mount body, and the engine is elastically held on the vehicle body.

  And since the penetration part of the bolt in the 2nd bracket is made into a long hole, the penetration position of a bolt can be adjusted between the longitudinal direction one end of a long hole. Thereby, even if an error occurs in the fixing position of the first bracket in the vehicle body or the engine, the fixing position of the first bracket in the engine mount body, or the fixing position of the first bracket in the vehicle body or the engine, The above error can be absorbed by adjusting the penetration position of the bolt in the longitudinal direction of the long hole.

  By the way, as described above, when a bolt is screwed into a nut and tightened, a rotational force for tightening is input to the bolt or nut. When the rotational force is input in this way, the direction in which the rotational force is not directly input (that is, one of the bolt and the nut in claim 1) tries to rotate together with the input rotational force. (That is, so-called “co-rotation” occurs). When such co-rotation occurs, the restricting portion provided in the second bracket directly or indirectly interferes with the direction in which the rotational force is not directly input, thereby restricting rotation (that is, co-rotation). Thereby, the nut can be screwed into the bolt, and the second bracket and the engine mount body can be fastened and fixed.

  Further, in the state where one of the bolt and the nut is interfered with the restricting portion as described above, the restricting portion is pressed in one of the rotational tangential directions with the rotational force for tightening, and this pushing is performed. One of the above-described pressing reaction forces in the direction opposite to the direction of pressure is applied from the restricting portion to the restricting portion. Here, in the engine mount according to the present invention, the restricting portions are provided in the range of 45 degrees in the rotation direction of the bolt on both sides of the imaginary line intersecting the longitudinal direction of the long hole with respect to the central axis of the bolt.

  For this reason, the size of the component in the same direction as the longitudinal direction of the long hole in the pressing reaction force is less than the size of the component in the width direction of the long hole (direction perpendicular to the longitudinal direction of the long hole). It becomes. Thereby, since the component which contributes to moving a volt | bolt to the longitudinal direction of a long hole among said pressing reaction force decreases, when fastening and fixing a 2nd bracket and an engine mount main body with a volt | bolt and a nut, The bolt can be prevented from moving in the longitudinal direction of the long hole.

  The engine mount according to a second aspect of the present invention is the engine mount according to the first aspect of the present invention, wherein the long hole is at one end side in the longitudinal direction and at one end in the longitudinal direction of the long hole. On the side, the restricting portion is provided within a range of 45 degrees on both sides of the imaginary line around the central axis of the bolt in a state where the bolt penetrates the elongated hole.

  In the engine mount according to the second aspect, the restriction portion is provided on the side of the long hole at one end side in the longitudinal direction of the long hole formed in the second bracket. In addition, the restricting portion has a restricting portion within a range of 45 degrees on each side of the imaginary line, with the bolt centering on the central axis of the bolt in a state where the bolt penetrates the elongated hole at one end side in the longitudinal direction. Provided.

  For this reason, even if the passing position of the bolt in the long hole is on the other end side with respect to one end in the longitudinal direction, the restriction portion is set within a range of 45 degrees on each side of the imaginary line around the central axis of the bolt. There is a position.

  The engine mount according to a third aspect of the present invention is the engine mount according to the first or second aspect, wherein the nut is screwed into the bolt from one of the bolt and the nut. One of the rotating radii is provided outwardly extending in the radial direction of the rotation, and is provided with an extending portion in which the co-rotation is restricted by interference with the restricting portion, and the extension from any one of the above The restricting portion is provided so that the extending direction of the portion interferes with the extending portion in a state along the longitudinal direction of the long hole.

  In the engine mount according to the third aspect, the extending portion extends outward from one of the bolt and the nut toward one of the rotational radial directions when the nut is screwed to the bolt. When a torque for tightening is input to the other of the bolt and the nut, and one of the bolt and the nut rotates together, the extension portion interferes with the restricting portion. Thereby, the joint rotation of any one of a bolt and a nut is controlled.

  Here, in a state where the extension portion is interfered with the restriction portion, the extension direction of the extension portion from one of the bolt and the nut is along the longitudinal direction of the long hole. The direction of the pressing force when the extending portion to be rotated together presses the restricting portion is a tangential direction of the common rotation (that is, rotation), and this tangential direction is the rotation of one of the bolt and the nut. It is substantially orthogonal to the extending direction of the extending portion extending outward in the radial direction. Therefore, the direction of the pressing force when the extending part presses the restricting part and the direction of the pressing reaction force applied from the restricting part to the extending part are substantially orthogonal to the longitudinal direction of the long hole. Thereby, components along the longitudinal direction of the long hole of the pressing force and the pressing reaction force are almost eliminated. For this reason, the displacement of the bolt along the longitudinal direction of the long hole can be further effectively suppressed.

  As described above, the engine mount according to the first aspect of the present invention can prevent or suppress the movement of the bolt along the longitudinal direction of the long hole when the engine mount body and the bracket are fastened with the bolt.

  In the engine mount according to the second aspect of the present invention, when the bolt passes through the long hole at any position between the longitudinal ends of the long hole, the engine mount body and the bracket are fastened with the bolt. The movement of the bolt along the longitudinal direction of the long hole can be prevented or suppressed.

  The engine mount according to the third aspect of the present invention can more effectively prevent or suppress the movement of the bolt along the longitudinal direction of the long hole when the engine mount body and the bracket are fastened with the bolt.

It is a disassembled perspective view of the engine mount which concerns on one embodiment of this invention. 1 is a front view of an engine mount according to an embodiment of the present invention. It is a side view of the engine mount concerning one embodiment of the present invention. The direction of the pressing force that the extension portion applies to the restriction portion when the extension portion interferes with the restriction portion, the direction of the pressing reaction force that the restriction portion applies to the extension portion, and the direction of each component of the component of the pressing reaction force It is a schematic diagram shown. It is a schematic diagram which shows the setting range of a control part, and its modification.

<Configuration of the present embodiment>
FIG. 1 is an exploded perspective view showing a configuration of an engine mount 10 according to an embodiment of the present invention.

  As shown in this figure, the engine mount 10 includes an engine mount body 12. The engine mount body 12 includes a cylindrical outer cylinder portion 14. A mounting rubber 16 that is an elastic member is press-fitted inside the outer cylindrical portion 14. The mounting rubber 16 has a cross-sectional shape such that the elasticity along the vehicle front-rear direction, the left-right (width) direction, and the vertical direction is a desired (preset) size. (A shape cut in a direction orthogonal to the axial direction of the outer cylinder portion 14) is set.

  A through hole 22 is formed in the mount rubber 16. The through-hole 22 is formed so that the through-hole 22 is positioned on the central axis of the outer cylinder 14 in a state where the mount rubber 16 is press-fitted into the outer cylinder 14, and the mount rubber extends in the direction of the central axis of the outer cylinder 14. 16 is penetrated. An inner cylinder portion 24 is press-fitted into the through hole 22. For this reason, the outer cylinder part 14 and the inner cylinder part 24 are connected via the mount rubber 16 by press-fitting the mount rubber 16 into the outer cylinder part 14.

  On the other hand, a pair of first brackets 30 are fixed to the outer cylinder portion 14. The first bracket 30 includes a base portion 32. The base 32 has a flat plate shape, and a through hole penetrating in the thickness direction is formed at a predetermined position. A weld nut 34 is fixed to the surface of the base 32 opposite to the vehicle body 20 corresponding to the through hole. A pair of vertical walls 40 are erected from both ends in the width direction or longitudinal direction of the base portion 32. The vertical walls 40 face each other in the axial direction of the outer cylinder portion 14.

  One of the pair of first brackets 30 is fixed to the vehicle body 20 on one side along the radial direction of the outer cylinder part 14 with the center of the outer cylinder part 14 as a boundary. One of the walls 40 is integrally fixed to the outer cylinder portion 14 by welding or the like at one axial end portion of the outer cylinder portion 14, and the other wall 40 is welded or the like to one axial end portion of the outer cylinder portion 14. It is fixed integrally with. The other one of the pair of first brackets 30 is fixed to the vehicle body 20 on the opposite side of the one first bracket 30 with respect to the center of the outer cylinder portion 14. One of the vertical walls 40 is integrally fixed to the outer cylinder portion 14 by welding or the like at one axial end portion of the outer cylinder portion 14, and the other is fixed to the one axial end portion of the outer cylinder portion 14 by welding or the like. The unit 14 is integrally fixed.

  In this way, the first bracket 30 fixed to the outer cylinder portion 14 has a base portion on the vehicle body 20 such that a through hole formed in the base portion 32 and a through hole 36 formed in the vehicle body 20 face each other. 32 is arranged. In this state, the bolt 38 that has passed through the through hole 36 from the opposite side of the base portion 32 of the vehicle body 20 passes through the through hole of the base portion 32 and is screwed into the weld nut 34, as shown in FIG. One bracket 30 is fastened and fixed to the vehicle body 20.

  On the other hand, the engine mount 10 includes a second bracket 50. The second bracket 50 includes a base portion 52. The base 52 is formed in a flat plate shape, and a through hole 54 penetrating in the thickness direction is formed at a predetermined position. The base 52 has one surface in the thickness direction opposed to a predetermined portion of the engine 18 and a bolt 56 penetrating the through hole 54 from the other surface in the thickness direction is formed in the predetermined portion of the engine 18. As shown in FIG. 2, the second bracket 50 is integrally fastened and fixed to the engine 18 by being screwed into the female screw portion (not shown).

  Connection pieces 58 and 60 extend from both ends in the width direction of the base portion 52 toward the other side in the thickness direction of the base portion 52 (that is, the side opposite to the engine 18). Each of the connecting pieces 58, 60 has a thickness direction along the axial direction of the inner cylinder portion 24, and the connecting piece 58 and the connecting piece 60 oppose each other in the axial direction of the inner cylinder portion 24. The inner cylinder part 24 is located between the piece 58 and the connecting piece 60. A long hole 62 is formed in each of the connecting pieces 58 and 60. The long hole 62 is elongated in a direction perpendicular to the thickness direction of the connecting pieces 58 and 60. The long hole 62 is formed corresponding to a through hole 64 formed on the central axis of the inner cylinder portion 24.

  The connecting pieces 58 and 60 and the inner cylinder portion 24 are connected by bolts 66 and nuts 68. The bolt 66 passes through the long hole 62 of the connecting piece 60 from the side opposite to the connecting piece 58 in the state where the inner cylinder portion 24 is positioned between the connecting piece 58 and the connecting piece 60, The spacer 70 interposed between the cylindrical portion 24 and the connecting piece 60 is penetrated. The bolt 66 penetrating the spacer 70 passes through the through hole 64 of the inner cylinder portion 24 and penetrates the spacer 72 interposed between the inner cylinder portion 24 and the connecting piece 58. The bolt 66 that has passed through the spacer 72 passes through the elongated hole 62 and the washer 74 of the connecting piece 58, and a nut 68 is screwed onto the tip side of the bolt 66 that has passed through the washer 74. By tightening the bolt 66 and the nut 68, the bolts 56 and 60 and the inner cylinder portion 24 are integrally fastened and fixed.

  Further, a flange portion 80 is integrally fixed to the nut 68 on the side facing the connecting piece 58 of the nut 68 by welding or the like. The flange portion 80 is formed in a flat plate shape, and the outer peripheral shape thereof is a circular shape that is substantially coaxial with the rotation center of the bolt 66 that is screwed into the nut 68. An extending portion 82 extends from a part of the outer periphery of the flange portion 80. The extending portion 82 is formed in a narrow plate shape whose longitudinal direction is along the radial direction of the flange portion 80.

  Corresponding to the flange portion 80, a restriction piece 90 as a restriction portion is formed on the connecting piece 58. The restricting piece 90 is formed by applying a narrow plate-like portion extending from a part of the outer periphery of the connecting piece 58 to one side in the thickness direction of the connecting piece 58 (on the side opposite to the connecting piece 60) by, for example, pressing. It is formed by bending. The front end side of the regulating piece 90 is located on the rotation locus of the extending portion 82 when the nut 68 is rotated around the bolt 66 passing through the long hole 62 of the connecting piece 58, and the nut 68 is around the bolt 66. When it rotates, the restricting piece 90 interferes with the extending portion 82 to restrict the rotation of the extending portion 82, that is, the rotation of the nut 68 around the bolt 66.

  Here, the restricting piece 90 is formed further outward in the longitudinal direction at one end in the longitudinal direction of the long hole 62. Furthermore, the setting position of the restriction piece 90 is set within a range of a constant angle θ around the central axis of the bolt 66 when the bolt 66 is positioned at one end in the longitudinal direction of the long hole 62. The angle θ that determines this range is the length along the width direction of the long hole 62 formed in the connecting piece 58 (the direction perpendicular to both the longitudinal direction of the connecting piece 60 and the thickness direction of the connecting piece 58). It is set to 45 degrees (within range A in FIG. 5) on both sides with a virtual line S (see FIGS. 2 and 5) passing through the center of the hole 62 in the longitudinal direction of the long hole 62 as a boundary.

  In particular, in the present embodiment, when the extending direction of the extending portion 82 from the flange portion 80 is substantially the same as the longitudinal direction of the long hole 62 formed in the connecting piece 58, the restricting piece 90 extends. The formation position of the restriction piece 90 is set so as to abut on the protruding portion 82. Further, the setting position of the restricting piece 90 and the extension dimension of the extending portion 82 from the flange portion 80 are the same even when the bolt 66 passes through the long hole 62 at the other longitudinal end of the long hole 62. Is set so that it can interfere with the extension 82.

<Operation and effect of the present embodiment>
Next, a process of mounting the engine 18 on the vehicle body 20 using the engine mount 10 will be described. Note that the order of the following steps is merely an example, and the order may be appropriately changed.

  When the engine 18 is mounted on the vehicle body 20 using the engine mount 10, the mount rubber 16 in which the inner cylinder portion 24 is press-fitted into the through hole 22 is further press-fitted inside the outer cylinder portion 14, and the engine mount body 12 is It is formed. Furthermore, the vertical wall 40 of the first bracket 30 is fixed to the outer cylinder portion 14 by welding or the like on the engine mount main body 12 to which the outer cylinder portion 14, the mount rubber 16, and the inner cylinder portion 24 are assembled. The main body 12 and the first bracket 30 are integrated.

  In this way, the connecting pieces 58 and 60 of the second bracket 50 are arranged on both sides in the axial direction of the inner cylinder portion 24 constituting the engine mount body 12 integrated with the first bracket 30. In this state, the bolt 66 is allowed to pass through the long hole 62 of the connecting piece 60, the through hole 64 of the inner cylinder portion 24, and the long hole 62 of the connecting piece 58 as described above. Further, a nut 68 is screwed onto the tip end side of the bolt 66 that has passed through the elongated hole 62 of the connecting piece 58, and the nut 68 is temporarily fixed to the bolt 66. In this temporarily fixed state, the bolt 66 can be appropriately moved in the long hole 62 until it interferes with both ends of the long hole 62 in the longitudinal direction.

  Next, the base 32 of the first bracket 30 integrated with the engine mount body 12 is disposed on the vehicle body 20. In this state, the bolt 38 that has passed through the through hole 36 from the side opposite to the first bracket 30 of the vehicle body 20 is screwed into the weld nut 34, and the first bracket 30 is connected to the vehicle body by the bolt 38 and the weld nut 34. Fastened to 20.

  Before and after assembly of the first bracket 30 to the vehicle body 20, the base 52 of the second bracket 50 is abutted against a predetermined portion of the engine 18, and the bolt 56 passes through the through hole 54 of the base 52 in this state. Thus, the second bracket 50 is fastened and fixed to the engine 18 by being screwed into a female screw portion or the like formed in the engine 18.

  Here, the formation position of the internal thread portion of the engine 18 to which the bolt 56 is screwed, the formation position of the through hole 54 in the base portion 52, the formation position of the through hole 36 in the vehicle body 20, and the base portion through which the bolt 38 passes. An error occurs in the formation position such as the formation position of the 32 through holes. Therefore, when the base 52 is fastened and fixed to the engine 18 and the first bracket 30 is fastened and fixed to the vehicle body 20 as described above, the bolt 66 is inserted into the long hole 62 to a position where no unnecessary load is applied to the mount rubber 16. Move with. Thus, the engine 18 can be mounted on the vehicle body 20 while absorbing the above-described error and applying an unnecessary load to the mount rubber 16 in a normal state.

  As described above, a tool such as a wrench is set on the head of the bolt 66 with the passage position of the bolt 66 in the long hole 62 determined, and the nut 68 is tightened (in this embodiment, in FIG. The bolt 66 is rotated in the left direction around the central axis of the bolt 66. When the bolt 66 rotates in this way, so-called “co-rotation” occurs in which the nut 68 rotates together with the bolt 66 due to friction between the bolt 66 and the nut 68.

  When the nut 68 rotates in such a co-rotation, the flange portion 80 integrated with the nut 68 rotates, and as a result, the extending portion 82 rotates together with the nut 68. In this way, when the extending portion 82 rotates until the extending direction of the extending portion 82 from the flange portion 80 substantially coincides with the longitudinal direction of the restricting piece 90 in the direction from the other end side to the one end side, the restricting piece 90 interferes with the extension 82. The extended portion 82 that has received the interference from the restricting piece 90 cannot be rotated any further, thereby restricting the common rotation of the nut 68.

  By restricting the rotation of the nut 68 in this manner, when the bolt 66 is rotated as described above with a tool such as a wrench, the bolt 66 and the nut 68 cause the second bracket 50 and the engine mount main body 12 to move inside. The tube portion 24 is fastened and fixed integrally. Thus, the engine 18 mounted on the vehicle body 20 via the engine mount 10 is elastically supported on the vehicle body 20 by the mount rubber 16.

  By the way, in this engine mount 10, when the inner cylinder part 24 and the 2nd bracket 50 are fastened and fixed with the volt | bolt 66 and the nut 68 as mentioned above, the control piece 90 interferes with the extension part 82. FIG. As shown in the schematic diagram of FIG. 4, the extending portion 82 interfered with the restriction piece 90 presses the restriction piece 90 in the rotational tangential direction (that is, applies a pressing force F <b> 1 to the restriction piece 90). Thus, the regulation piece 90 pressed by the extension part 82 provides the extension part 82 with a pressing reaction force F2 corresponding to the applied pressing force F1.

  As shown in FIG. 4A, the pressing reaction force F2 applied to the extending portion 82 includes the component F21 in the longitudinal direction of the long hole 62 (the direction of the imaginary line S in FIG. 4) and the long hole. 62 is divided into components F22 in the width direction (in FIG. 4, the direction orthogonal to the virtual line S). This component F21 acts to move the nut 68 and the bolt 66 in the longitudinal direction of the long hole 62, and this component F22 acts to move the nut 68 and the bolt 66 in the width direction of the long hole 62. However, since the movable range of the bolt 66 along the width direction of the long hole 62 is extremely smaller than the movable range of the bolt 66 along the longitudinal direction of the bolt 66, the bolt 66 is moved in the width direction of the long hole 62 by the component F22. There is no significant movement.

  Here, in the engine mount 10, the setting position of the restriction piece 90 is the width direction of the long hole 62 around the central axis of the bolt 66 when the bolt 66 is positioned at one longitudinal end of the long hole 62 as described above. Both sides are within a range of 45 degrees with a virtual line S passing through the center in the longitudinal direction of the long hole 62 as a boundary. For this reason, in the engine mount 10, the size of the component 21 is equal to or smaller than the size of the component 22. Moreover, in the engine mount 10, as shown in FIG. 4B, when the extending direction of the extending portion 82 from the flange portion 80 substantially coincides with the longitudinal direction of the long hole 62, the regulating piece 90 The position where the restricting piece 90 is formed is set so as to abut against the extending portion 82.

  For this reason, in this engine mount 10, the direction of the pressing reaction force F <b> 2 from the regulating piece 90 is no matter what position the bolt 66 passes through the long hole 62 from one end to the other end in the longitudinal direction of the long hole 62. Is along the width direction of the long hole 62, and the component F21 along the longitudinal direction of the long hole 62 disappears or the component F21 becomes very small. Therefore, in the engine mount 10, when the second bracket 50 and the inner cylinder portion 24 are fastened by applying a large rotational force to the bolt 66 with a tool such as a wrench, the nut 68, As a result, the bolt 66 can be prevented or extremely effectively prevented from moving in the longitudinal direction of the long hole 62.

  As described above, the bolt 66 can be prevented or restrained from moving along the longitudinal direction of the long hole 62 when the second bracket 50 and the inner cylinder portion 24 are fastened and fixed. It is possible to prevent or suppress the mount rubber 16 from being elastically deformed by moving to.

  In the present embodiment, the position of the restricting piece 90 is set further outside in the longitudinal direction on one end side of the connecting piece 60 in the longitudinal direction, that is, within the range A in FIG. However, the setting range of the restriction piece 90 is not limited to this. For example, the formation position of the restriction piece 90 may be set in the range B on the opposite side of the range A along the longitudinal direction of the long hole 62. Further, when the bolt 66 is located at the other longitudinal end of the connecting piece 60, the bolt 66 is within the range of 45 degrees on both sides of the virtual line S around the central axis, that is, (B) of FIG. The formation position of the restriction piece 90 may be set in the range D in FIG. 5 or the formation position of the restriction piece 90 may be set in the range C on the opposite side of the range D along the longitudinal direction of the long hole 62. The angle θ indicating the range A to the range D in FIG. 5 is 45 degrees.

  However, if the restricting piece 90 is provided in the range A, even when the bolt 66 passes through the long hole 62 on the other end side than the one end in the longitudinal direction of the long hole 62, the restriction around the central axis of the bolt 66 at this time is provided. The formation position of the piece 90 does not exceed the range of 45 degrees from the virtual line S. Further, when the restriction piece 90 is provided in the range D, the formation position of the restriction piece 90 around the central axis of the bolt 66 at this time does not exceed the range of 45 degrees from the virtual line S.

  As described above, considering that the passing position of the bolt 66 in the long hole 62 changes due to the above-described error and other errors, the bolt 66 can be passed through any position in the long hole 62. It is preferable that the restriction piece 90 is set within a range A or a range D in which the formation position of the restriction piece 90 around the central axis line does not exceed the range of 45 degrees from the imaginary line S.

  In the present embodiment, as described above, the setting position of the restriction piece 90 is determined based on the case where the bolt 66 passes through the long hole 62 at one end in the longitudinal direction of the long hole 62. However, the setting position of the restricting piece 90 may be determined based on the case where the bolt 66 passes through the long hole 62 at the middle portion in the longitudinal direction of the long hole 62. That is, the range of movement of the bolt 66 in the long hole 62 due to the above-described error or other errors is not necessarily limited from one end to the other end in the longitudinal direction of the long hole 62. Is longer than the moving range of the bolt 66 in the long hole 62, the moving range of the bolt 66 is within a predetermined range in the middle of the long hole 62 in the longitudinal direction. Therefore, in the case of such a configuration, the restriction pieces 90 may be provided within a range of 45 degrees on both sides of the hypothetical line S on the outer side of one end of the assumed movement range of the bolt 66.

  Further, in the present embodiment, a tool such as a wrench is set on the head of the bolt 66 and a rotational force is applied to the bolt 66 and tightened. However, a tool such as a wrench is set on the nut 68 and the nut is tightened. It is good also as a structure which gives a rotational force to 68 and fastens. However, in such a configuration, the extending portion 82 is provided on the bolt 66 and the restricting piece 90 is provided on the connecting piece 60.

  In the present embodiment, the first bracket 30 is fixed to the vehicle body 20 and the second bracket 50 is fixed to the engine 18. However, the first bracket 30 is fixed to the engine 18. The second bracket 50 may be fixed to the vehicle body 20.

  Further, in the present embodiment, the direction of the longitudinal direction of the long hole 62 with respect to the vehicle is not particularly described. However, the longitudinal direction of the long hole 62 is the vehicle longitudinal direction, the vehicle vertical direction, and further the vehicle width direction. You may face in any direction.

  In the present embodiment, the rotation of the nut 68 is restricted by the extension part 82 being interfered with the restriction piece 90. In the present embodiment, the "restriction part" referred to in the claims. The configuration corresponding to is only the restriction piece 90, and the extending portion 82 is not included in the “restriction portion”. That is, when the extension part 82 is considered from the viewpoint of the present invention described in claim 1, the extension part 82 is configured to interfere with the restriction piece 90 by rotating integrally with the nut 68. The part 82 is configured to be grasped as a part of the nut 68.

DESCRIPTION OF SYMBOLS 10 Engine mount 12 Engine mount main body 18 Engine 20 Car body 30 1st bracket 50 2nd bracket 62 Long hole 66 Bolt 68 Nut 82 Extension part 90 Restriction piece (regulation part)
S virtual line

Claims (3)

A first bracket fixed to a vehicle body or a vehicle engine;
An engine mount body having an elastic member, fixed to the first bracket, and formed with a hole through which a bolt passes;
Of the vehicle body and the engine, the first bracket is fixed to the one that is not fixed, a long hole through which the bolt passes is formed, and the bolt that penetrates both the long hole and the hole is formed on the bolt A second bracket that is fastened and fixed to the engine mount body by screwing a nut and is elastically connected to the first bracket via the engine mount body;
Provided in the second bracket within a range of 45 degrees in the rotation direction of the bolt on both sides of the imaginary line intersecting the longitudinal direction of the elongated hole with respect to the central axis of the bolt in the longitudinal direction of the elongated hole. A regulating portion that directly or indirectly interferes with one of the bolt and the nut, and regulates the joint rotation of the bolt and the nut at the time of fastening and fixing,
Engine mount with   The imaginary centering on the central axis of the bolt in a state where the bolt penetrates the long hole at a side of the long hole at one end side in the longitudinal direction of the long hole and at one end side in the longitudinal direction of the long hole. The engine mount according to claim 1, wherein the restricting portion is provided within a range of 45 degrees on both sides of the line.   One of the bolt and the nut is extended outward in one of the rotational radii when the nut is screwed into the bolt, and is interfered with the restricting portion so as to interfere with the joint. The extending portion whose rotation is restricted is provided, and the restriction direction is such that the extending direction of the extending portion from one of the ones interferes with the extending portion in a state along the longitudinal direction of the long hole. The engine mount according to claim 1 or 2, wherein a portion is provided.

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