JP4433143B2 - Anti-vibration mounting device - Google Patents

Description

  The present invention relates to an anti-vibration mount device for mounting a power plant on an automobile.

  Conventionally, as disclosed in Patent Document 1, for example, both ends of the longitudinal direction (the direction in which the crankshaft extends) of the power plant in which the engine and the transmission are arranged in series are positioned on the left and right ends of the engine room, respectively. Some vehicle body side frames are elastically supported by two mount members (anti-vibration mount devices). Since such a mount member is responsible for most of the weight of the power plant, it requires a certain degree of static rigidity at least in the vertical direction, which is disadvantageous in terms of absorbing and blocking engine vibration.

  In other words, the vibration generated mainly around the roll inertia main axis (hereinafter simply referred to as the roll axis) due to torque fluctuations during idling of the engine is not so large, but it is a low frequency range where humans feel uncomfortable. Therefore, it is desirable to prevent absorption by the mount member and transmission to the vehicle body.

  Therefore, in general, an inertia main shaft mount is employed in which the left and right mounting members are arranged as close as possible to the roll shaft of the power plant. In this way, even if the mount member is somewhat hard in the vertical direction (having high static rigidity), the dynamic spring around the roll axis becomes soft, thereby suppressing transmission of idle vibration to the vehicle body. It is done.

  However, if the dynamic spring around the roll axis is softened in this way, for example, when the engine output (torque) fluctuates greatly, such as during rapid acceleration, the entire power plant rolls greatly due to the reaction force (torque). There is a risk that the shaft rotates (rolls) around the shaft, thereby causing a problem of interference with surrounding components, or excessive deformation of the rubber portion of the mount member, resulting in a loss of durability. Therefore, in a general inertial spindle mount, in addition to the main mount members arranged on the left and right sides of the power plant, as disclosed in, for example, Patent Document 2, another mount member (one in the front and the back) Front mount and rear mount) are provided to control rolling of the power plant.

  For example, as disclosed in Patent Document 3, the support point of the power plant by the left and right mounting members is set to be slightly higher, and the entire power plant is swingably supported like a pendulum. There is also known a structure in which a regulating member for regulating the shaking is provided independently so as to connect the lower end of the power plant and the vehicle body side (hereinafter referred to as a three-point pendulum mount). In this three-point pendulum mount, the support point of the power plant load is farther from the roll shaft than the general inertial spindle mount described above. When force (torque) is applied, the rotation of the power plant around the roll axis is also regulated by the left and right mounting members themselves, so it is considered that even a single regulating member can easily suppress the shaking of the power plant. .

  However, for example, in the case of a vehicle equipped with a large displacement engine or a hybrid vehicle, the output of the power plant becomes very large. Therefore, the rolling of the power plant due to the reaction force (torque) is restricted as described above. It is difficult to suppress with only the members.

  In addition, the fact that rolling due to such a large driving reaction force is also restricted by the left and right mounting members themselves means that a large horizontal load is input to these mounting members. For this reason, there is a concern that the durability of the rubber part or the like in the mount member is lowered.

In this regard, in the three-point pendulum mount described in the third conventional example, in addition to the independent regulating member provided at the lower end of the power plant, each of the left and right mounting members is either front or rear of the mount body. A restriction member is provided so as to extend in one direction, so that the rolling of the power plant due to the driving reaction force can be more reliably restricted, and the deformation of the rubber part etc. in those mounting members is suppressed to ensure durability. can do.
French Patent Application Publication No. 2736008 Specification Japanese Utility Model Publication No. 62-196944 German Patent Application No. 4209613

  By the way, in the mount member disclosed in Patent Document 3, a cylindrical bush including an inner cylinder body, an outer cylinder body, and a rubber elastic body that couples both cylinder bodies is integrally formed at both ends of the regulating member. One of the cylindrical bushes is attached to the vehicle body side, and the other is attached to the power plant side member in the mount main body. In this configuration, the mount member composed of the vehicle body side member, the power plant side member, and the elastic support body is integrally molded, but separately from that, the two cylindrical bushes provided on the regulating member must be integrally molded, respectively. Don't be. A cylindrical bush is generally produced through a process of integrally molding an inner cylinder and a rubber elastic body, and then press-fitting and bonding the integrally molded product to the outer cylinder. The number is relatively large. As a result, there is an inconvenience that the number of molding steps for the entire mount member increases, and the production cost increases accordingly.

  The present invention has been made in view of such a point, and an object of the present invention is to improve the productivity of the vibration-proof mount device integrally provided with the regulating member and to reduce the production cost. There is.

  The vibration-proof mount device of the present invention is a device that elastically supports at least one of both ends of the power plant mounted on the vehicle with respect to the vehicle body so that the longitudinal direction is the vehicle width direction.

The anti-vibration mount device is provided between a vehicle body side member attached and fixed to the vehicle body side, a power plant side member attached and fixed to the power plant side, and between the vehicle body side member and the power plant side member. A mount main body including an elastic support for elastically supporting the power plant side member on the vehicle body side member, and extending in the vehicle longitudinal direction between the power plant side member and the vehicle body side. a regulating member for regulating the oscillation of the roll direction, the second supporting the first elastic bushing, the power plant side member and the other end of the regulating member for supporting one end portion of the regulating member to the vehicle body an elastic bush, fixedly attached to the vehicle body together with the body side member of the mount main body portion, while being positioned across the mount main body portion, contact to the mount main body portion That includes a stopper member for restricting the movement of the power plant side member, said first resilient bushing is fixed to the stopper member, the mounting body portion integrally with the power plant side member The second elastic bushing further includes a formed flange for mounting the power plant, and the second elastic bushing includes a through hole provided in the flange, an inner cylindrical body disposed coaxially with the through hole, and an inside of the through hole. And a rubber bush that connects the peripheral surface and the outer peripheral surface of the inner cylindrical body to each other, and the rubber bush is integrally formed by vulcanization in the through hole provided in the flange.

  According to this configuration, the first and second elastic bushes are provided at both ends of the restricting member, and at least one of the first and second elastic bushes is provided in the mount body. This makes it possible to mold the elastic bush simultaneously with the molding of the mount body, and by molding at least one of the first and second elastic bushes simultaneously with the molding of the mount body, Can be reduced.

In other words , the flange is provided with a cylindrical bush (second elastic bush) having an inner cylinder, and the rubber bush is used when the vehicle body side member, the power plant side member, and the elastic support body are integrally formed. , Integrally formed with the flange. Thus, the second elastic bushing is formed at the same time as the mount main body is formed, and the number of forming steps is reduced.

  The flange is disposed in a horizontal direction on the side of the mount main body, and the restricting member is configured by a plate-like member and is disposed at an upper or lower position of the flange on the side of the mount main body. You may set up.

  Since the restricting member is disposed at the upper side or the lower side of the flange that extends in the horizontal direction on the side of the mount main body part, the mount main body part and the restricting member are arranged side by side in the vehicle width direction.

  The regulating member that extends in the longitudinal direction of the vehicle body receives the horizontal load input to the mount main body, but it is intended to avoid the vertical vibration of the power plant due to road surface irregularities etc. being transmitted to the vehicle body via the regulating member. For example, the length of the restricting member should be as long as possible.

  Therefore, by adopting a layout in which the mount main body and the regulating member are arranged side by side in the vehicle width direction, the overall length of the anti-vibration mounting device is relatively long while the longitudinal length of the regulating member is relatively long. Shorter. Thereby, while preventing the vertical vibration of the power plant from being transmitted to the vehicle body side, interference with other members of the vibration-proof mount device is prevented.

  The restriction member may be composed of two plate-like members, and may be disposed at each of the upper and lower positions of the side flange of the mount body.

  By doing so, the length of the anti-vibration mount device is relatively short while the length of the restricting member is relatively long, and the restricting member is composed of two plate-like members. Thus, the load in the horizontal direction input to the mount body is reliably received, and the rolling of the power plant is reliably regulated.

Flanges for the powerplant mounted is disposed on the side position of the mounting body portion, said mounting body portion is integrally formed in the upper Symbol power plant side member and a the flange across the mount main body portion further comprising a bracket disposed on the opposite position, the second resilient bushing, a through hole provided in the bracket, a cylindrical body inner disposed through hole coaxial with the through hole a rubber bush for connecting the inner and outer circumferential surfaces of the inner cylinder to each other, with including, the rubber bushing is made by vulcanizing integrally molded into the through holes provided in the upper Symbol bracket, the regulating member May be arranged on the opposite side of the mounting side of the power plant with the mount main body interposed therebetween.

  Also in this configuration, the mount body and the regulating member are arranged side by side in the vehicle width direction. As a result, the total length of the vibration-proof mount device is relatively short while the length of the restricting member in the front-rear direction is relatively long. This prevents the vertical vibration of the power plant from being transmitted to the vehicle body side. In this configuration, the restricting member is disposed on the side opposite to the mounting side of the mount main body and the power plant, and thus is particularly suitable when there is no room in the space between the mount main body and the power plant. It is.

  As described above, according to the vibration-proof mount device of the present invention, at least one of the first and second elastic bushes supporting the end portion of the restricting member is formed simultaneously with the mount body portion. As a result, the number of molding steps of the whole anti-vibration mount device can be reduced, and the productivity can be improved and the production cost can be reduced.

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

(Embodiment 1)
-Overall configuration-
1 and 2 show a schematic configuration of an engine mount system using an anti-vibration mount apparatus according to an embodiment of the present invention. In both figures, reference numeral P denotes an engine 1 and a transmission 2 coupled in series. It is a power plant. This power plant P is mounted horizontally in an engine room of a car (not shown) so that its longitudinal direction (the direction in which the crankshaft of the engine 1 extends) is the vehicle width direction (the left-right direction of the vehicle body). It is elastically supported at two points with respect to the vehicle body side frames 61 and 62 via mount members 3 and 5 disposed at both ends in the longitudinal direction, that is, at the ends on the engine 1 side and the transmission 2 side, respectively. Yes. Further, the lower end portion of the power plant P is connected to a rear vehicle body side member 9 (subframe or the like) by a regulating member 8 independent of the mount members 3 and 5.

  FIG. 1 omits all of the intake / exhaust system and auxiliary equipment of the engine 1 and shows only the main body portion from an obliquely upper right side on the rear side of the vehicle body. The engine main body portion includes a cylinder block 10 and an upper portion thereof. The belt cover 12 is disposed at the end in the longitudinal direction opposite to the transmission 2 (the right end of the vehicle body shown on the front side in FIG. 1). A head cover 13 is disposed at the top of the cylinder, and an oil pan (not shown) is disposed at the bottom of the cylinder block 10. Then, the lower end side of the engine side mounting bracket 15 is fastened to the right side wall of the cylinder head 11 through the belt cover 12, and extends from the mounting member 3 side to the upper end portion of the mounting bracket 15 extending upward therefrom. The flange plate 31b is fastened with being overlapped from above. This engine-side mount member 3 is the vibration-proof mount device of the present invention, and the detailed configuration thereof will be described later.

  In this embodiment, the transmission 2 is an automatic transmission in which a differential is integrated in addition to a torque converter and a transmission gear train (may be a manual transmission or a CVT), and the bell housing 20a of the transmission case 20 is an engine. 1 is connected to the cylinder block 10 at the crankshaft side end, and drives the front wheels of the automobile from the bulging portion 20b formed at the rear of the bell housing 20a toward the left and right sides, respectively. Drive shafts 22 and 22 extend. The transmission-side mount member 5 is disposed so that the vicinity of the tip of the tapered transmission case 20 is suspended from the side frame 62 on the left side of the vehicle body by the mount bracket 23. A detailed configuration of the transmission-side mount member 5 will also be described later.

  In the power plant P formed by connecting the engine 1 and the transmission 2 in series as described above, since the engine 1 is taller than the transmission 2, the roll axis R (roll inertia main axis) extending in the longitudinal direction. Is inclined downward from the end portion on the engine 1 side toward the transmission 2 side, as indicated by a one-dot chain line in the figure. Further, in this embodiment, the two mount members 3 and 5 responsible for the weight of the power plant P are respectively spaced upward from the roll axis R, whereby the power plant P is connected to the two mount members 3 and 3. 5 is swingable like a pendulum around a line segment L (swing support shaft: see FIG. 2) connecting the support points of the load 5.

  When a large driving reaction force (torque) is applied, for example, when the vehicle is suddenly accelerated or decelerated, the power plant P is generally arranged on the roll axis R as schematically shown by the white arrow in FIG. While rotating (rolling) around, the whole swings back and forth like a pendulum around the upper swinging axis L. Such rolling and overall swinging is the lower end of the power plant P. It is regulated by the regulating member 8 disposed in the. That is, the basic configuration of the engine mount system of this embodiment is the same as that of a conventionally known three-point pendulum mount (the one disclosed in Patent Document 3).

  By the way, in the above-mentioned three-point pendulum mount, since the supporting point of the load of the power plant is generally separated from the roll shaft as compared with the inertia spindle mounting, the power is applied when the driving reaction force acts as shown in FIG. As described above, the rolling of the plant P is also regulated by the left and right mounting members 3 and 5 itself, and this is advantageous for regulating the displacement of the power plant P. However, in the case where the output is very large, such as a large displacement engine, it is difficult to suppress a large driving reaction force with only the single regulating member 8, and such a large driving reaction force is left and right. The problem of durability caused by acting on the mounting members 3 and 5 must also be taken into consideration.

  Therefore, in this embodiment, in addition to the independent regulating member 8, the left and right mounting members 3 and 5 are also integrally provided with regulating members 43 and 56, respectively. The rolling can be more reliably regulated, and even if a large horizontal load is input to the mount members 3 and 5 at that time, the load is received by the regulation members 43 and 56, and the rubber portion in the mount main body 30. It is possible to secure the durability by suppressing the deformation.

-Mount member structure-
Next, as a feature of the present invention, the detailed structure of the engine-side mount member 3 will be described with reference to FIGS. Here, FIG. 3A is a top view of the engine side mount member 3, and FIG. 3B is a left side view thereof. FIG. 4 is a partial cross-sectional view showing the internal structure of the mount main body 30 by omitting a later-described regulating member 43 and the like, and cutting out a part thereof.

  As shown in FIG. 4 above, in this embodiment, the mount member 3 on the engine side is a so-called liquid-filled type, and the mount main body 30 that receives the static load of the power plant P is connected to the power plant side. A metal casing 31 and a connecting fitting 32 on the vehicle body side are connected by a rubber support 33. The casing 31 is made of, for example, an aluminum alloy, and has a thick cylindrical casing body 31a disposed so as to extend in the vertical direction, and a flange plate 31b (connection member) extending in a direction substantially perpendicular to the axis Z from the upper outer periphery thereof. Are integrally formed by casting or the like.

  The connection fitting 32 has a substantially conical shape with an upper concavity, and is disposed substantially coaxially so that its upper end is positioned substantially at the center of the lower end opening of the casing body 31a. A rubber support 33 is interposed between the side surface portion of the ball and the inner peripheral surface of the casing main body 31a opposite to the outer periphery thereof, while the lower end surface of the connection fitting 32 is provided on the upper surface of the vehicle body side frame 61. The upper surface of the upper raised portion 34 a of the vehicle body side mounting bracket 34 to be fixed is joined, and both are fastened by bolts 35.

  A mortar-shaped concave portion is formed on the lower inner peripheral side of the rubber bearing body 33, and the peripheral surface of the concave portion is attached to the tapered side surface portion of the connecting fitting 32. It is formed in a substantially truncated cone shape so that it extends radially outward from the entire circumference of the coupling metal 32 and extends obliquely upward, and the outer peripheral surface of the upper part thereof is the inner peripheral surface of the casing body 31a. It is glued. Thus, the upper part of the rubber support 33 bonded and fixed to the inner periphery of the casing body 31a is a relatively thick cylindrical shape that opens upward, and its upper end is the upper end of the casing body 31a. It is positioned below the portion by a predetermined length.

  And the outer peripheral part of the disk-shaped partition plate 36 is overlaid on the upper end part of the cylindrical part of the rubber bearing 33 from above, and further, a generally hat-shaped rubber so as to cover the entire partition plate 36 from above. A diaphragm 37 is disposed, whereby the upper end opening of the rubber support 33 is liquid-tightly closed, and a cavity is formed inside. In the diaphragm 37, an outer cylindrical portion having an outer diameter substantially the same as the inner diameter of the casing main body 31a and an inner cylindrical portion continuous to the lower end via a flange portion are integrally formed on the outer peripheral side of the hat-shaped main body portion. A substantially cylindrical reinforcing plate 38 is embedded from the outer cylinder part to the inner cylinder part, and the outer cylinder part reinforced thereby is formed on the inner periphery of the upper end side of the casing body 31a from above. It is press-fitted and fixed in the inner fitting state.

  As described above, a buffer solution such as ethylene glycol is sealed in the cavity formed inside the rubber support 33, and this absorbs and reduces the vibration of the power plant P input to the rubber support 33. This is the liquid chamber F. The inside of the liquid chamber F is divided into upper and lower parts by the partition plate 36, and the lower side thereof is a pressure receiving chamber whose volume increases or decreases with deformation of the rubber support 33, and the upper side of the liquid chamber F The volume is expanded or contracted by the deformation of the diaphragm 37 to become an equilibrium chamber that absorbs the volume variation in the pressure receiving chamber. That is, an annular orifice passage 39 surrounded by the casing body 31a and the flange portion and the inner cylinder portion of the diaphragm 37 is formed above the outer peripheral portion of the partition plate 36 so as to extend in the circumferential direction. One end of the orifice passage opens toward the pressure receiving chamber below the liquid chamber, and the other end of the orifice passage 39 opens toward the equilibrium chamber above the liquid chamber. Then, the buffer solution in the pressure receiving chamber and the equilibrium chamber circulates through the orifice passage 39, so that the low-frequency vibration acting on the pressure receiving chamber from the rubber support 33 is attenuated.

  In addition to the mount main body 30 having the above-described structure, as shown in FIGS. 3 and 4, an inverted U-shaped stopper member 40 is disposed so as to straddle the top of the mount main body 30. The stopper member 40 is formed by pressing a steel plate or the like, for example, and is spaced downward from the upper end of the mount main body 30 by a predetermined distance and extending substantially horizontally in the front-rear direction, and downward from both front and rear ends. It has a pair of front and rear leg portions 40b, 40c that are bent and extend almost directly below. The lower end portions of the pair of front and rear leg portions 40b and 40c are bent into flange portions 40d and 40e, respectively. The front and rear flange portions 40d and 40e are respectively mounted on the vehicle body side mounting bracket 34 on the front and rear sides of the mount main body portion 30. In a state of being superimposed on the flange portions 34b, 34b, the bolts are fastened on the side frame 61 by bolts (not shown).

  Corresponding to the stopper member 40, the mount main body 30 is provided with an upper rubber layer 41 on the upper outer periphery of the casing main body 31a, and both front and rear ends of the casing main body 31a in the rubber layer 41 are raised upward. The upper bulging portions 41a, 41a are formed, and the upper bulging portions 41a abut against the beam portions 40a of the stopper member 40 from below, thereby restricting the upward movement of the casing body 31a. It has come to be. Further, the rubber layer 41 has an intermediate portion in the vertical direction having a thickness greater than or equal to a predetermined thickness, and the rubber layer 41 abuts on the front and rear legs 40b and 40c of the stopper member 40, whereby the casing main body 31a has a longitudinal direction. The movement to is to be regulated.

  A lower rubber layer 42 is formed on the outer periphery of the lower end portion of the casing body 31a so as to be connected to the rubber bearing body 33, and the rubber layer 42 also has lower ends at both front and rear ends of the casing body 31a. Lower bulging portions 42a and 42a that bulge are formed, and these come into contact with the front and rear end portions of the upper raised portion 34a of the vehicle body side mounting bracket 34, whereby the downward movement of the casing body 31a is restricted. It is like that.

  Thus, as a feature of the present invention, a restriction member 43 for restricting the rolling of the power plant P is integrally disposed on the mount member 3 as shown in FIG. That is, when viewed from above as shown in FIG. 4A, the regulating member 43 is located on the left side of the mount body 30, that is, at an intermediate position between the mount body 30 and the belt cover 12 of the engine 1. The flange plate 31b is spaced apart (see FIG. 2B) and is disposed so as to extend in the front-rear direction substantially parallel to the beam portion 40a of the stopper member 40. Thus, since it is provided so as to extend in the front-rear direction on the side of the mount main body 30, the regulating member 43 may be long enough to absorb the vertical vibration of the power plant P by its swinging. In addition, the mount member 3 does not jump out greatly before and after, and the problem of interference does not occur in the front-rear direction. In addition, there is a dead space that is long in the front and rear and narrow in the left and right between the mount main body 30 of the engine side mount member 3 and the belt cover 12 (side wall portion) of the engine 1 adjacent thereto. It is arranged using space effectively.

  The restricting member 43 is composed of a plate-like member 44, and a through hole into which a bolt 48 described later is inserted is formed at the front end thereof, and a thick disc-like rear end connecting portion 46 is formed at the rear end thereof. Is provided.

  The rear end connecting portion (first elastic bushing) 46 includes an outer cylindrical portion 46a provided integrally with the rear end of the plate-like member 44 formed in a bifurcated shape, and an inner cylindrical portion positioned coaxially therewith. 46b is elastically connected by an annular rubber bush 46c. The rear end connecting portion 46 of the restricting member 43 is connected to the rear leg portion 40c of the stopper member 40 at a position rearward of the vehicle body relative to the rear end portion of the mount main body portion 30 (a position away from the mount main body portion 30 toward the rear of the vehicle body). It is fixed to a welded bracket 49. That is, the bracket 49 is formed, for example, by pressing a steel plate or the like so as to have a substantially inverted L shape, and a leg portion 49a extending vertically is welded to a side surface of the rear leg portion 40c of the stopper member 40, while the leg portion A stud bolt 47 is fixed to the front end side of the mounting portion 49b extending laterally from the upper end of 49a by welding so as to extend upward from the upper surface thereof. The inner cylindrical portion 46b of the rear end connecting portion 46 of the restricting member 43 is externally inserted into the stud bolt 47 from above, and the nut 47a is screwed from above to the stud bolt 47 protruding further upward from the inner cylindrical portion 46b. As a result, the rear end connecting portion 46 of the restricting member 43 is fastened to the bracket 49.

  On the other hand, the front end of the restricting member 43 is elastically supported by a front end connecting portion (second elastic bush) 45 provided on the flange plate 31 b at a substantially front end position of the mount main body 30. As shown in FIGS. 4 and 5, the front end connecting portion 45 includes a through hole 45a formed through the front surface of the vehicle body on the upper surface of the flange plate 31b, and an inner cylindrical portion 45b disposed coaxially with the through hole 45a. And a rubber bush 45c that connects the inner peripheral surface of the through hole 45a and the outer peripheral surface of the inner cylindrical portion 45b to each other.

  Then, a bolt 48 is inserted into the inner cylinder portion 45b from below, and a through hole at the front end of the plate-like member 44 is inserted into the bolt 48 protruding further upward from the inner cylinder portion 45b. When the nut 48a is screwed onto the bolt 48, the front end of the restricting member 43 is elastically supported with respect to the front end connecting portion 45 provided on the flange plate 31b.

  In the engine-side mount member 3 of this embodiment, the regulating member 43 disposed in the dead space between the engine 1 and the side of the mount main body 30 is a connection member between the mount main body 30 and the power plant P. The front end of the restricting member 43 is supported on the flange plate 31b by using the fact that it passes immediately near a certain flange plate 31b. Therefore, the connecting structure between the restricting member 43 and the power plant P side is extremely simple. It will be something. Similarly, by utilizing the fact that the rear end connecting portion 46 of the restricting member 43 is positioned in the immediate vicinity of the rear leg portion 40c of the stopper member 40, the restricting member 43 and the vehicle body side are connected by connecting them together. The connecting structure is extremely simple.

  Here, the manufacturing procedure of the engine side mount member 3 will be briefly described. First, the liquid-sealed mount main body 30 is manufactured, for example, by the following procedure. That is, the casing 31 in which the casing main body 31a and the flange plate 31b are integrally formed, the connection fitting 32, and the inner cylinder portion 45b are respectively prepared, and these are set in a predetermined molding die, and the rubber support body 33 is prepared. Then, a predetermined amount of unvulcanized rubber composition to be the rubber bush 45c and the rubber layers 41 and 42 is poured into the mold. Then, they are heated and pressurized to form a vulcanized integral molding. In this manner, the rubber bush 45 c of the front end connecting portion 45 is molded simultaneously with the rubber bearing body 33.

  A buffer solution is injected into the integrated molded product thus created, and a partition plate 36 and a diaphragm 37 are fitted into the openings of the molded product to close the openings. Thus, the mount main body 30 is completed.

  Next, the regulating member 43 is manufactured by the following procedure, for example. That is, the inner cylinder part 46b is prepared, this is set to a predetermined molding die, and a predetermined amount of unvulcanized rubber composition to be the rubber bush 46c is injected into the die. Then, they are heated and pressurized to form a vulcanized integral molding. On the other hand, a plate-like member 44 in which the outer cylinder portion 46a is integrated is prepared. Then, an adhesive is applied to the outer peripheral surface of the integrated molded product, the molded product is press-fitted into the outer cylindrical portion 46a, and the outer cylindrical portion 46a and the rubber bush 46c are bonded to each other. In this way, the regulating member 43 is completed.

  When the mount main body 30 and the restricting member 43 are completed, the rear end connecting portion 46 of the restricting member 43 is fixed to the bracket 49 provided on the stopper member 40 as described above. As described above, the front end portion of 43 is fixed to the front end connection portion 45 of the flange plate 31b. Further, the mount bracket 34 is fixed to the mount main body 30 with bolts 35. Thus, the engine-side mount member 3 including the mount main body portion 30, the regulating member 43, the mount bracket 34, and the stopper member 40 is completed.

  Next, the structure of the transmission-side mount member 5 is shown, for example, in an enlarged manner in FIG. 6. This is because the upper end portion of the mount bracket 23 extending upward from the front end side of the transmission 2 is connected to the vehicle body side frame. It is suspended through a rubber block 51 by a metal frame member 50 attached to the 62 side. That is, the frame member 50 is formed, for example, by press-molding a steel plate or the like, and integrally forming a rectangular frame-shaped main body portion 52 and a stay portion 53 extending therefrom toward the rear side of the vehicle body (the left side in the figure). Further, flange portions 54 and 54 are provided on the side of the main body portion 52 by welding another steel plate piece and extending to the side and the lower side. The flange portions 54 and 54 are attached to the vehicle body side frame 62 by bolts (not shown). It is supposed to be concluded.

  Further, a standing wall portion 52b is integrally formed on the main body portion 52 of the frame member 50 by drawing or the like so as to extend upward from the periphery of the opening portion 52a around the four sides of the vertical axis Z. A metal connecting pipe 55 is supported by a rubber block 51 having both left and right ends bonded to 52b so that its axial center is vertically movable. That is, the connecting pipe 55 is integrally vulcanized and molded so that the lower portion thereof has a relatively small diameter by, for example, drawing, and is embedded in the substantially central portion of the rubber block 51 except for the small diameter portion 55a. Do it. Then, the stud bolt 24 of the mount bracket 23 is inserted into the small diameter portion 55a of the connecting pipe 55 from below, and the nut 25 is screwed into the stud bolt 24 from above so that the mount bracket 23, the connecting pipe 55, Is concluded.

  Further, a regulation member (torque rod) 56 is also provided integrally with the transmission-side mount member 5. That is, the front end (rear end) of the stay portion 53 extending rearward from the main body portion 52 of the frame member 50 is bent downward at a substantially right angle, and the bent portion 53a is bent as described above. The connecting pipe 55 connected to the main body 52 is located just behind the small-diameter portion 55a of the connecting pipe 55, that is, at a position substantially horizontally behind the vehicle body. A restricting member 56 is disposed between the stay bent portion 53a and the small diameter portion 55a of the connecting pipe 55 so as to extend in the longitudinal direction of the vehicle body.

  The restricting member 56 is provided with connecting portions 58 and 59 having rubber bushes 58a and 59c interposed at both ends of a plate-like member 57, respectively. Among these, the connecting portion 59 at the front end is a cylindrical bush, and includes an outer cylindrical portion 59a, an inner cylindrical portion 59b, and a rubber bush 59c. The inner cylindrical portion 59b is extrapolated to the small diameter portion 55a of the connecting pipe 55. And are coupled in an externally fitted state. On the other hand, the connecting portion 58 on the rear end side of the regulating member 56 is a stud type in which the stay bent portion 53a is sandwiched and fixed between two ring-shaped rubber bushes 58a, 58a skewered at the front end portion of the plate-like member 57. The bush.

  That is, a circular flange portion 58 b is integrally formed on the rear end side of the plate-like member 57 of the restriction member 56, and a round portion formed at the bent portion 53 a of the stay portion 53 at a tip portion of the flange portion 58 b. A rubber bush 58a is sandwiched between the bent portion 53a and the flange portion 58b through the hole. Further, another rubber bush 58a and a washer 58c are disposed on the rear end side of the plate-like member 57 extending rearward of the vehicle body from the bent portion 53a, and a small diameter is provided at the tip of the plate-like member 57. A screw portion 57a is provided, and a washer 58c is fastened to the tip of the plate-like member 57 by a nut 58d screwed to the screw portion 57a, so that a rubber bush is provided between the washer 58c and the bent portion 53a. 58a is clamped.

  In the engine mount system of this embodiment in which the weight of the power plant P is supported by the two left and right mount members 3 and 5 having the above-described configuration, for example, when the automobile is stopped and the engine 1 is in an idle operation state, When low-frequency vibration caused by torque fluctuation occurs around the roll axis R, the casing 31 on the power plant P side in the mount body portion 30 of the engine-side mount member 3 is minutely moved back and forth with respect to the connecting fitting 32 on the vehicle body side. Similarly, in the transmission-side mount member 5, the connecting pipe 55 on the power plant P side slightly vibrates back and forth with respect to the frame member 50 on the vehicle body side. However, since the vibration is of a low frequency and the amplitude is very small, the vibration is absorbed by the rubber support 33 and the rubber block 51 and transmitted to the vehicle body is very small. Further, the idle vibration is absorbed by the bending of the rubber bushes 45c, 46c, 58a, and 59c in the restricting members 43 and 56 of the both mount members 3 and 5, so that the vibration is transmitted to the vehicle body side via the restricting members 43 and 56. Will not be transmitted.

  In addition, when a large driving reaction force (torque) is applied, for example, when the vehicle starts or suddenly accelerates, the power plant P generally has a roll axis R as schematically shown by a white arrow in FIG. As a whole, it swings back and forth like a pendulum about the upper swinging support shaft L while rotating (rolling) around. At this time, the rotational displacement around the roll axis R is caused by the reaction force applied from the independent regulating member 8 at the lower end of the power plant P and the regulating members 43 and 56 of the left and right mounting members 3 and 5. This effectively suppresses the displacement of the power plant P caused by the driving reaction force from becoming excessively large.

  For example, in the mount member 3 on the engine side, after the rubber bushes 45c and 46c respectively disposed at the front and rear end portions of the restricting member 43 are bent to the maximum upon receiving a load in a substantially horizontal direction, the restricting member 43 Receives the input load. Similarly, in the mount member 5 on the transmission side, the restricting member 56 receives a large horizontal load input due to the driving reaction force. Thus, excessive deformation of the rubber bearing body 33 and the rubber block 51 of the mount members 3 and 5 and the peeling of the rubber block 51 are prevented, and sufficient durability can be ensured.

  Therefore, according to the vibration-proof mount device (engine-side mount member 3) according to this embodiment, not only the independent restricting member 8 is provided at the lower end of the power plant P, but also the left and right mount members 3 and 5 are restricted respectively. By providing the members 43 and 56, it is possible to firmly receive the driving reaction force acting on the power plant P and to suppress the shaking of the power plant P, and the rubber portions of the mount members 3 and 5 are excessive. Deformation can be suppressed and durability can be ensured.

  Furthermore, for example, when an automobile is traveling on an irregular road surface, and the vehicle body and the power plant P are relatively vibrated up and down, the rubber bearing body 33 in the mount member 3 on the engine side, and the transmission side In the mount member 5, the rubber block 51 elastically deforms up and down to absorb vibrations, and the regulation members 43 and 56 swing in the mount members 3 and 5, respectively, to absorb up and down vibrations. That is, since the length of each of the regulating members 43 and 56 is set to be sufficiently long, the swing angle of the regulating members 43 and 56 with respect to the relative vertical displacement of the vehicle body and the power plant P becomes small, and the vertical direction This vibration is absorbed by the bending of the rubber bush.

  In particular, the restricting member 43 of the mount member 3 on the engine side is composed of a plate-like member 44, so that it is highly rigid with respect to horizontal load input, while it is plate-like member with respect to load input in the vertical direction. Due to the bending of 44, the rigidity becomes relatively low. Thereby, a relatively hard spring characteristic is obtained in the horizontal direction and the rolling of the power plant P is reliably regulated, while a relatively soft spring characteristic is obtained in the vertical direction, and the vertical vibration of the power plant P is obtained. Is effectively prevented from being transmitted to the vehicle body side.

  Further, in the engine-side mount member 3 having a relatively small margin in the surrounding space, the restriction member 43 is provided so as to extend in the front-rear direction on the side of the mount main body 30, so that the length of the restriction member 43 is increased. Even if it is made sufficiently long, it does not jump out greatly before and after the mount member 3, thereby preventing the occurrence of interference problems.

  In particular, in the case of the power plant P in which the engine 1 and the transmission 2 are arranged in series as in this embodiment, the end portion on the engine 1 side is close to the vehicle body side frame 61, and the space margin is extremely reduced in the vicinity thereof. However, in this embodiment, the dead space between the mount main body 30 of the engine side mount member 3 and the engine 1 adjacent to the side thereof can be effectively used, and the regulating member 43 can be disposed there. .

  Furthermore, in this embodiment, the stopper member 40 is disposed so as to straddle the upper portion of the mount main body portion 30 so that the displacement in the upper direction and the front-rear direction can be reliably regulated. Since the regulating member 43 arranged on the side of the mount main body 30 does not interfere with the stopper member 40, both can be optimally laid out.

  The engine-side mount member 3 has a rear end portion of the regulating member 43 supported on the vehicle body side by a rear end connecting portion 46 provided integrally with the plate-like member 44, whereas its front end portion is a flange plate. It supports to the power plant side by the front end connection part 45 provided in 31b. By providing the front end connecting portion 45 on the flange plate 31b, the rubber bush 45c can be molded simultaneously with the rubber support 33, and the simultaneous molding reduces the number of molding steps of the mount member 3 and reduces the production cost. Figured.

(Embodiment 2)
FIG. 7 shows the structure of the engine-side mount member 3 according to the second embodiment. The difference from the mount member 3 according to the first embodiment is that the regulating member 43 has two plate-like members 44. And the point that the rear end connecting portion 46 is provided on the stopper member 40 side. In addition, in the engine side mount member 3 which concerns on Embodiment 2, the same code | symbol is attached | subjected about the same member as Embodiment 1, and the description is abbreviate | omitted.

  The rear end connecting portion 46 is integrated with a bracket 70 welded to the rear leg portion 40 c of the stopper member 40. The bracket 70 is made of two plates that are horizontally expanded and arranged in the vertical direction, and is connected to the outer peripheral surface of the outer cylindrical portion 46a of the rear end connecting portion 46 by, for example, welding.

  The rear end connecting portion 46 is composed of an outer cylindrical portion 46a, an inner cylindrical portion 46b, and a rubber bush 46c, as in the first embodiment, but the upper end and the lower end of the inner cylindrical portion 46b are respectively restricted. The two plate-like members 44 constituting the member 43 are in contact with each other, and the nut 48a is screwed into the bolt 48 inserted into the inner cylindrical portion 46b from the lower side, whereby the two plates One rear end portion of the plate-like member 44 is sandwiched between the inner tube portion 46b and the head of the bolt 48, and the rear end portion of the other plate-like member 44 is sandwiched between the inner tube portion 46b and the nut 48a. Yes. Thus, the rear end of the restricting member 43 is elastically supported by the rear end connecting portion 46.

  The plate-like member 44 is disposed to extend in the longitudinal direction of the vehicle body at each of the upper and lower positions of the flange plate 31b, and the upper end of the inner cylinder portion 45b of the front end connecting portion 45 provided on the flange plate 31b. The front end portions of the two plate-like members 44 are in contact with the lower end and the lower end, respectively. In this state, the bolt 48 is inserted into the inner cylinder portion 45b from the lower side, and the nut 48a is screwed into the bolt 48, whereby one front end portion of the two plate-like members 44 is It is clamped by the cylinder part 45b and the head part of the volt | bolt 48, and the front-end part of the other plate-shaped member 44 is clamped by the inner cylinder part 45b and the nut 48a. Thus, the front end of the restricting member 43 is elastically supported by the front end connecting portion 45.

  As described above, the restricting member 43 is constituted by the two plate-like members 44, thereby reliably receiving a large horizontal load input due to the driving reaction force, reliably restricting the rolling of the power plant P, and mounting member. It is possible to ensure sufficient durability of the third rubber support 33.

(Embodiment 3)
FIG. 8 shows the structure of the engine-side mount member 3 according to the third embodiment. The difference from the mount member 3 according to the first embodiment is that the regulating member 43 is disposed between the mount member 3 and the engine 1. Instead, the restriction member 43 is disposed at a position opposite to the engine side with respect to the mount member 3 (that is, a right position of the mount main body 30). In addition, in the engine side mount member 3 which concerns on Embodiment 3, the same code | symbol is attached | subjected about the same member as Embodiment 1, and the description is abbreviate | omitted.

  Also in the third embodiment, the rear end connecting portion 46 is integrated with a bracket 70 welded to the rear leg portion 40 c of the stopper member 40. The bracket 70 is welded to the rear leg portion 40c of the stopper member 40 at a position opposite to the engine side.

  Similar to the first and second embodiments, the rear end connecting portion 46 includes an outer cylindrical portion 46a, an inner cylindrical portion 46b, and a rubber bush 46c, and is a bolt / nut 48 fastened to the inner cylindrical portion 46b. , 48a, the rear end portion of the plate-like member (one or two) 44 is elastically supported by the rear end connecting portion 46.

  On the other hand, the front end connecting portion 45 that supports the front end portion of the restricting member 43 is not the flange plate 31b, but from the outer peripheral surface of the mount main body portion 30 at a position opposite to the flange main plate 30 with respect to the flange plate 31b. It is provided at the tip of a bracket 31c that is disposed extending obliquely forward in the longitudinal direction of the vehicle body. The bracket 31c may be formed integrally with the casing body 31a, like the flange plate 31b.

  Thus, the front end portion of the restricting member 43 is fixed to the front end connecting portion 45 by bolts and nuts 8 and 48a, so that the restricting member 43 is in the vehicle longitudinal direction at a position opposite to the engine side. It will extend and be arranged.

  Thus, there is no restriction | limiting in particular about the arrangement | positioning position of the regulating member 43, What is necessary is just to arrange | position the regulating member 43 in the space with a margin. At that time, as shown in FIG. 8, a concave portion or the like may be provided in the plate-like member 44 as necessary in order to avoid interference with other members (in the illustrated example, the mount main body 30).

(Other embodiments)
The configuration of the present invention is not limited to the above embodiment, but includes various other configurations. That is, in the said embodiment, although the engine side mount member 3 (vibration-proof mount apparatus) which concerns on this invention is made into the liquid enclosure type, it does not restrict to this. That is, for example, as shown in FIG. 9, for example, the partition plate 36 and the diaphragm 37 are removed from the mount body 30 of the above embodiment, and the static load of the power plant P is supported only by the rubber support 33. Good. In this way, cost can be reduced.

  In the above embodiment, the rear end connecting portion 46 of the restricting member is fixed to the brackets 49 and 70 of the mount member 3, but the rear end connecting portion 46 of the restricting member is on the vehicle body side (for example, the side frame 61). It may be fixed to.

  In the above embodiment, the front end connecting portion 45 is provided on the mount main body 30. However, the rear end connecting portion 46 may be provided on the mount main body 30 in reverse. In this case, the rubber bushing 46c of the rear end connecting portion 46 may be molded simultaneously with the rubber bearing body 33. Further, both the front end connecting portion 45 and the rear end connecting portion 46 may be provided in the mount main body 30. In this case, the rubber bushes 45 c and 46 c of the front end and rear end connecting portions 45 and 46 may be formed simultaneously with the rubber support 33. Alternatively, the front end connecting portion 45 may be provided on the vehicle body side member, and the rear end connecting portion 46 may be fixed to the power plant side member.

  Moreover, in the said embodiment, although the structure of the vibration isolating mount apparatus based on this invention is applied only to the engine side mount member 3, it is not restricted to this, It can apply also to the mount member 5 by the side of a transmission. .

  Furthermore, although the power plant P of the said embodiment arrange | positions the engine 1 and the transmission 2 in series in the longitudinal direction, it is not restricted to this, For example, the power plant P is installed horizontally in an engine room. A transmission may be arranged in parallel behind the mounted engine 1 so that the input shaft or the like extends in the vehicle width direction.

It is a perspective view which shows schematic structure of an engine mount system. It is explanatory drawing which shows typically a mode that a driving reaction force (torque) acts, seeing a power plant from the vehicle body left side. It is an enlarged view which shows the structure of an engine side mount member, (a) is a top view, (b) is a left view. It is AA sectional drawing of FIG. 5 which shows the internal structure of a mount main-body part. It is a top view of a mount main-body part. FIG. 4 is a view corresponding to FIG. 3 for a transmission-side mount member. It is a figure which shows the structure of the vibration proof mount apparatus which concerns on Embodiment 2. FIG. It is a figure which shows the structure of the vibration proof mount apparatus which concerns on Embodiment 3. FIG. It is a figure which shows the structure of the other anti-vibration mount apparatus which is not a liquid enclosure type.

P Power plant 1 Engine 2 Transmission 3 Engine-side mount member (anti-vibration mount device)
30 Mount body 31 Casing 31b Flange plate (flange)
31c Bracket 32 Connecting bracket (vehicle body side member)
33 Rubber bearings (elastic bearings)
43 Restricting member 45 Front end connecting portion (second elastic bushing)
45a Through-hole 45b Inner cylinder part 45c Rubber bushing 46 Rear end coupling part (first elastic bushing)
61, 62 Side frame

Claims (4)

An anti-vibration mount device that elastically supports at least one of both ends of a power plant mounted on a vehicle so that a longitudinal direction thereof is a vehicle width direction,
A vehicle body side member mounted and fixed on the vehicle body side; a power plant side member mounted and fixed on the power plant side; and the power plant side member provided between the vehicle body side member and the power plant side member. A mount main body including an elastic support for elastically supporting the member;
A regulating member that extends in the longitudinal direction of the vehicle body between the power plant side member and the vehicle body side and regulates swinging of the power plant in the roll direction;
One end portion of the regulating member and the first elastic bush supported on the vehicle body,
The other end portion of the regulating member and the second elastic bush supported on the power plant side member,
A stopper member that is attached and fixed to the vehicle body side together with the vehicle body side member of the mount main body portion and is disposed so as to straddle the mount main body portion, and that restricts the movement of the power plant side member in the mount main body portion; With
The first elastic bush is fixed to the stopper member;
The mount body part further includes a flange for power plant attachment formed integrally with the power plant side member,
The second elastic bushing connects a through hole provided in the flange, an inner cylinder disposed coaxially with the through hole, and an inner peripheral surface of the through hole and an outer peripheral surface of the inner cylinder. And a rubber bush
The anti-vibration mount device , wherein the rubber bush is vulcanized and integrally formed in the through hole provided in the flange . The anti-vibration mount device according to claim 1 ,
The flange is horizontally extended on the side of the mount body,
The anti-vibration mount device according to claim 1, wherein the restricting member is constituted by a plate-like member and is disposed at an upper or lower position of the flange on a side of the mount main body. The anti-vibration mount device according to claim 2 ,
The anti-vibration mount device is characterized in that the restricting member is composed of two plate-like members and is disposed at each of the upper and lower positions of the flange on the side of the mount main body. An anti-vibration mount device that elastically supports at least one of both ends of a power plant mounted on a vehicle so that a longitudinal direction thereof is a vehicle width direction,
A vehicle body side member mounted and fixed on the vehicle body side; a power plant side member mounted and fixed on the power plant side; and the power plant side member provided between the vehicle body side member and the power plant side member. A mount main body including an elastic support for elastically supporting the member;
A regulating member that extends in the longitudinal direction of the vehicle body between the power plant side member and the vehicle body side and regulates swinging of the power plant in the roll direction;
A first elastic bush for supporting one end of the regulating member on the vehicle body side;
A second elastic bush for supporting the other end of the regulating member on the power plant side member,
The mounting body portion is integrally formed on the power plant side member and a flange for a power plant mounting arranged in lateral position of the mounting body portion, it is integrally formed on the power plant side member And a bracket disposed at a position opposite to the flange across the mount body,
Said second elastic bushing, connected to the through hole provided in the bracket, a cylindrical body inner disposed through hole coaxial, and an outer peripheral surface of the inner peripheral surface and the inner cylindrical body of the through hole with each other together comprise a rubber bush, the said rubber bushing is vulcanized integrally molded to the through hole provided in the upper Symbol bracket,
The anti-vibration mount device, wherein the regulating member is disposed on the opposite side of the mounting side of the power plant with the mount main body interposed therebetween.

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