JP2004150514A - Prime motor supporting device and prime motor supporting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce load to a vehicle body side and control transmission of vibrations to the vehicle body side. <P>SOLUTION: A prime motor supporting device 4 is equipped with a vibration damping part 5 disposed on one side of an engine 3 and a vehicle body 2, and a wire member 6 arranged on the other side of the engine 3 and the vehicle body 2 in series with the vibration damping part 5. When the engine 3 vibrates, while preventing stress in a bending direction and in a compression direction which acts on a mounting part of the device 4 on the vehicle body 2, the device 4 is allows the movement in the bending direction and in the compression direction. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motor support device and a motor support structure for supporting a motor mounted on a vehicle on a vehicle body side.
[0002]
[Prior art]
Conventionally, as a motor support structure including a motor support device of this type, a motor support device including a piston that moves a cylindrical housing in a longitudinal direction and a rod that is connected to the piston and the motor. Is known (for example, refer to Patent Document 1). In this prime mover support device, when the prime mover vibrates, the rod moves together with the prime mover, and the piston moves within the housing in which the pressure oil is sealed. That is, a force for damping the vibration of the prime mover is obtained by the resistance force when the piston moves in the housing.
[0003]
This motor support structure includes a pair of the above-described motor support devices on the left and right sides of the motor. Each prime mover support device is interposed between the vehicle body and the prime mover, and is installed such that the rod is inclined downward toward the left and right outer sides. Thus, the vibration of the motor in the roll direction and the vertical direction is damped by the motor support device.
[0004]
[Patent Document 1]
JP-A-54-25022
[0005]
[Problems to be solved by the invention]
However, in the prime mover support structure using the prime mover support device, since the device has rigidity in the compression direction, a load in the compression direction is applied to the vehicle body side of the prime mover support device due to the vibration of the prime mover during running of the vehicle, and the vehicle body side mounting The part is pushed by the device. In addition, although the upper and lower ends of the device are rotatably connected to the prime mover and the vehicle body, when a sudden load is applied to the prime mover, the piston hardly moves, so that a force in the bending direction is generated in the device, and the vehicle body side The mounting portion is pryed by the device. Accordingly, the mounting portion of the motor support device on the vehicle body side must have a strong structure to cope with this load, and there is a problem that the manufacturing cost and weight of the vehicle increase.
[0006]
In addition, since the device has rigidity in the bending direction and the compression direction, the vibration of the prime mover is easily transmitted to the vehicle body, and the vibration and noise of the prime mover are transmitted through the vehicle body and transmitted to the vehicle interior. As a result, a vibration damping material, a sound insulating material, and the like must be attached to the vehicle body, which also increases the manufacturing cost and weight of the vehicle.
[0007]
The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the load on the vehicle body and to suppress transmission of vibration to the vehicle body, and a motor support device. An object of the present invention is to provide a motor support structure provided with a motor.
[0008]
[Means for Solving the Problems]
In order to achieve the object, according to the first aspect of the present invention, a motor support device interposed between a motor and a vehicle body, a vibration damping unit disposed on one of the motor side and the vehicle body side, On the other side of the prime mover side and the vehicle body side, there is provided a relaxation member arranged in series with the vibration damping portion and extending in a predetermined direction. Note that the relaxation member referred to here is, for example, a wire, a chain, a multi-node link member in which a plurality of links are connected in series, and the like, is relaxed by a force in a compression direction and a bending direction, and a force in a tension direction is applied to both ends. It is a relaxable member that transmits only.
[0009]
According to the first aspect of the present invention, when forces in the bending direction and the compression direction act on the relaxing member, the relaxing member is loosened between the prime mover side and the vehicle body side. Thus, when the prime mover vibrates, the vibration components in the bending direction and the compression direction of the relaxation member are not transmitted to the vehicle body side due to the relaxation of the relaxation member. The vibration component in the tension direction of the relaxing member is attenuated by the vibration damping unit connected in series to the relaxing member. That is, among the vibration components of the prime mover, the vibration in the direction of pulling the relaxation member is suppressed, and the vibration in the other direction is not suppressed.
[0010]
Therefore, no force in the bending direction and the compression direction acts on the mounting portion on the vehicle body side of the device, and the mounting portion is not twisted or pressed by the device, so that the strength and durability of the vehicle body are dramatically improved. be able to. That is, it is not necessary to provide a reinforcing member or the like at the mounting portion of the vehicle body so as to resist the forces in the bending direction and the compression direction of the device, and the manufacturing cost and weight of the vehicle can be reduced.
Further, since the device allows the movement in the bending direction and the compression direction, the vibration of the prime mover is hardly transmitted to the vehicle body side, and the vibration and the sound in the vehicle interior can be reduced. That is, the number of parts to be attached to the vehicle body, such as the vibration damping material and the sound insulation material, can be reduced, and the manufacturing cost and weight of the vehicle can be reduced.
Also, since the vibration of the prime mover is suppressed only in the tension direction of the relaxation member, it is possible to arrange only a device that suppresses only the vibration component in the direction in which the vibration is the largest. And increase the degree of freedom in vehicle design.
[0011]
According to a second aspect of the present invention, in the prime mover support device according to the first aspect, a tension adjusting means for adjusting a tension of the relaxing member is provided.
[0012]
According to the second aspect of the present invention, in addition to the operation of the first aspect, when the tension of the relaxing member is adjusted by the tension adjusting means so that the relaxing member is in a relaxed state, the motor moves to a position where the relaxing member is in tension. Vibration of the relaxation member in the tension direction when moved is suppressed, and if the relaxation member is in a tensioned state, vibration of the relaxation member in the tension direction is suppressed without moving the motor. In this way, it is possible to adjust the position where the damping force of the vibration damping portion acts on the prime mover.
[0013]
Therefore, it is possible to adjust the position where the relaxation member is tensioned, that is, the displacement of the prime mover in which vibration is allowed. In addition, the tension of the relaxation member is adjusted according to the running state of the vehicle and the like, and the restricted state of the prime mover suitable for the running state can be realized.
[0014]
According to a third aspect of the present invention, in the prime mover support device according to the first or second aspect, the tension adjusting unit is connected to a coil member that is energized from the outside and one end of the relaxing member, and And a magnetic body that moves in the longitudinal direction of the relaxation member when energized.
[0015]
According to the third aspect of the present invention, in addition to the operation of the first or second aspect, by changing the amount of current supplied to the coil member, the magnetic body moves in the longitudinal direction of the relaxation member, and the tension of the relaxation member is adjusted. You.
[0016]
Therefore, by adjusting the amount of current, accurate adjustment of the tension of the relaxation member is realized. In addition, the tension of the relaxing member can be adjusted without contact with the relaxing member, which is advantageous also in the reliability of the device.
[0017]
According to a fourth aspect of the present invention, in the prime mover support structure, the prime mover support device according to any one of the first to third aspects is provided symmetrically in a predetermined direction of the prime mover. Here, the predetermined direction includes a linear direction such as a front-rear direction, a left-right direction, and a vertical direction, and a rotation direction such as a roll direction, a pitch direction, and a yaw direction.
[0018]
According to the fourth aspect of the invention, in addition to the function of any one of the first to third aspects, when the prime mover vibrates, a vibration component in one direction in a predetermined direction is attenuated by one prime mover support device, and the other direction. The (reverse) vibration component is damped by the other motor support. Here, only the force in the pulling direction acts on the mounting portion on the vehicle body side of each motor support device from the motor side.
[0019]
Accordingly, it is possible to reduce the load in the bending direction and the compression direction on the mounting portion of each motor support device while suppressing the vibration of the motor in the predetermined direction.
[0020]
According to a fifth aspect of the present invention, in the prime mover support structure according to the fourth aspect, one end of each of the relaxation members is connected to the prime mover such that the one end extends in the roll direction of the prime mover. I do.
[0021]
According to the fifth aspect of the invention, in addition to the operation of the fourth aspect, the vibrations of the prime mover in the roll direction are suppressed by each prime mover support structure. Here, the roll direction refers to a rotation direction around a shaft of a prime mover that transmits a rotational force to a power train of a vehicle.
[0022]
Therefore, it is possible to suppress the vibration in the roll direction in which the vibration component of the prime mover becomes relatively large, which is extremely advantageous in practical use.
[0023]
According to a sixth aspect of the present invention, in the prime mover support structure, a pair of the prime mover support devices according to the third aspect are provided symmetrically with respect to a predetermined direction of the prime mover, and a control device electrically connected to each of the coil members is provided. Wherein the control device includes an energizing unit that energizes each of the coil members, and an energizing amount changing unit that changes an energizing amount of each of the coil members by the energizing unit according to a traveling state of the vehicle. And
[0024]
According to the sixth aspect of the invention, in addition to the operation of the third aspect, when the prime mover vibrates, a one-way vibration component in a predetermined direction is attenuated by one prime mover support device, and a vibration component in the other direction (reverse direction). Is damped by the other prime mover support. Here, only the force in the pulling direction acts on the mounting portion on the vehicle body side of each motor support device from the motor side.
Further, the control device changes the amount of electricity to each coil unit according to the running state of the vehicle. Thereby, the tension of the relaxation member of each motor support device is changed. For example, when the prime mover has a relatively low rotation speed and it is necessary to suppress the vibration of the prime mover, the vibration of the prime mover is suppressed by changing the tension to a tension at which the tension member is tensioned. Further, for example, when it is necessary to regulate the movement of the prime mover so that the prime mover does not relatively move with respect to the vehicle body, by changing the tension member to a tension for tensioning, the prime mover is restrained by a predetermined damping force. . Further, for example, when the vibration of the prime mover is not transmitted to the vehicle body side, the vibration of the prime mover is allowed by changing the tension to a tension at which the relaxation member relaxes, and the vibration is not transmitted to the vehicle body side.
[0025]
Therefore, depending on the traveling state of the vehicle, the vibration of the prime mover is suppressed to protect accessories and the like connected to the prime mover, or the power train system is restrained by restraining the prime mover to suppress relative movement with the transmission side. Protecting the vehicle and preventing transmission of vibration to the vehicle body can improve the ride comfort of the occupant.
[0026]
According to a seventh aspect of the present invention, in the prime mover support structure according to the sixth aspect, the control device detects an electromotive force of each of the coil members due to the movement of the magnetic body, and the electromotive force detection device. And a voltage adjusting means for adjusting a voltage applied to each of the coil members by the current supplying means based on the electromotive force detected by the control means.
[0027]
According to the seventh aspect of the present invention, in addition to the operation of the sixth aspect, when the prime mover vibrates in a state where the relaxing member is in tension, the magnetic body moves according to the tension of the relaxing member, and the coil is moved by the movement of the magnetic body. The electromotive force of the member is detected by the electromotive force detection means. Based on the electromotive force, the voltage supplied to the coil member by the power supply means is adjusted. When the energizing voltage to the coil member is adjusted, the magnetic body moves according to the energizing voltage, and the tension of the relaxing member is adjusted. If the prime mover vibrates in a state where the relaxing member is relaxed, the magnetic body does not move, so that no electromotive force is generated in the coil member due to the movement of the magnetic body.
[0028]
Therefore, for example, when the correspondence between the energized voltage of the coil member and the tension of the relaxation member changes due to aging or the like, the tension of the relaxation member of each motor support device can be adjusted. Further, for example, the tension setting of the tension member of each motor support device can be automatically adjusted based on the initial tension setting state stored in the control device in accordance with the vibration state of the motor.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 7 show an embodiment of the present invention. FIG. 1 is a schematic side view of a vehicle showing an engine support state, and FIG. 2 is a partial front view of the vehicle showing an engine support state. 3 is a schematic block diagram showing a vibration damping unit and a control device connected thereto, FIG. 4 is a graph showing the vibration characteristics of the vibration damping unit, showing the relationship between frequency and damping force, and FIG. FIG. 6 is a graph showing the relationship between the applied voltage of the member and the AC component of the voltage fluctuation due to the relaxation of the wire member. FIG. 6 is a graph showing the change in wire tension when the engine vibrates. FIG. 7 is a coil when the engine vibrates. It is a graph which shows the voltage change of a member.
[0030]
As shown in FIG. 1, the prime mover support structure includes a prime mover support device 4 interposed between a vehicle body 2 of an automobile 1 and an engine 3 as a prime mover. In the present embodiment, a total of four prime mover support devices 4 are provided, and are provided on the left and right front sides and the rear side of the engine 3, respectively.
[0031]
As shown in FIG. 2, the vehicle body 2 has a pair of left and right front frames 2a extending front and rear on the left and right peripheral edges of an engine room, and a cross member 2b connecting the front frames 2a and arranged at a lower portion of the engine room. ing.
[0032]
The engine 3 is mounted on the vehicle 1 such that the direction of the crankshaft is in the front-rear direction. In the present embodiment, the engine 3 is a horizontally opposed engine in which each cylinder is symmetrically arranged. The lower part of the engine 3 is supported by the cross member 2b via the engine mount member 3a. Further, the engine 3 is supported on the front frame 2 a via the prime mover support device 4 on the side upper side.
[0033]
As shown in FIG. 2, the motor support device 4 is provided as a pair so as to be symmetric with respect to the roll direction of the engine 3. In this embodiment, since the direction of the crankshaft is forward and backward, the roll direction of the engine 3 matches the roll direction of the vehicle. That is, each motor support device 4 is provided symmetrically with respect to the engine 3. The prime mover support device 4 includes a vibration damping unit 5 attached to the vehicle body 2, and a wire member 6 connecting the vibration damping unit 5 and the engine 3. That is, the wire member 6 as a relaxation member is arranged in series with the vibration damping unit 5.
[0034]
As shown in FIG. 3, the vibration damping unit 5 includes a housing 7 made of metal or the like and having an opening 7a, and a rubber member 8 closing the opening 7a of the housing 7. A connection piece 6 a provided at an end of the wire member 6 is fixed to the rubber member 8. The interior of the housing 7 is filled with a viscous fluid 9 in a liquid state. The connection piece 6a is provided with a magnet 6b as a magnetic material that protrudes into the housing 7. As shown in FIG. 4, the damping characteristics of the vibration damping unit 5 of the present embodiment exhibit the highest damping force at the resonance frequency of the engine 3 in the roll direction. This resonance frequency is generally on the order of 10 to 15 Hertz.
[0035]
As shown in FIG. 3, a plate member 10 is provided inside the housing 7 to partition the inside of the housing 7 into a first chamber 7b on the opening 7a side and a second chamber 7c on the opposite side. The member 10 has an orifice 10a for communicating the first chamber 7b and the second chamber 7c. In the present embodiment, the orifice 10a is formed at the center of the plate member 10. A gas 11 such as air, nitrogen or the like is sealed in the second chamber 7c in the housing 7 on the side opposite to the opening 7a, and a rubber film 7d forms a boundary between the viscous fluid 9 and the gas 11.
[0036]
Here, a coil member 12 surrounding the magnet 6b is provided at a predetermined interval on the first chamber 7b side of the plate member 10. In the present embodiment, the magnet 6b and the coil member 12 constitute a tension adjusting unit. Electric wires 13 extending to the outside of the housing 6 are connected to both ends of the coil member 12. Each electric wire 13 is connected to a control device 14 outside the housing 6. Here, the control device 14 which forms a part of the prime mover support structure of the present embodiment will be described.
[0037]
The control device 14 includes a CPU (Central Processing Unit) 15, a ROM (Read Only Memory) 16, a RAM (Random Access Memory) 17, an energization control unit 18 as an energizing unit, an electromotive force detecting unit 19 as an electromotive force detecting unit, It has. The control device 14 is connected to an ECU (Electrical Control Unit) 20 of the vehicle.
[0038]
The CPU 15 reads a program stored in the ROM 16 according to signals input from the electromotive force detection unit 19 and the ECU 20, and executes processing according to the program. Then, the processing result is stored in the RAM 17, and a signal corresponding to the processing result is appropriately output to the energization control unit 18. In particular, the CPU 15 executes processing according to the tension change program 101 and the reference value adjustment program 102 stored in the ROM 16. In the present embodiment, the CPU 15, the ROM 16, and the RAM 17 detect an energization amount changing unit that changes an energization amount to each of the coil members 12 by the energization control unit 18 according to a traveling state of the vehicle, and an electromotive force detection unit 19. A voltage adjusting means for adjusting the energization voltage to each coil member 12 by the energization control unit 18 based on the generated electromotive force is provided.
[0039]
The tension change program 101 is a program that changes the tension of each wire member 6 when a signal relating to the running state of the vehicle 1 is input from the ECU 20 to the control device 14.
[0040]
Specifically, when the start-up state, the stop state, and the idling state of the engine 3 are detected by the ECU 20 by sensors (not shown), a signal including information on these states is input from the ECU 20 to the control device 14. When the signal is input, the control device 14 changes the energization voltage of each coil member 12 by the energization control unit 18 to set each wire member 6 to a preset tension. In the present embodiment, even when the accelerator pedal is suddenly depressed by the occupant and the vehicle 1 is suddenly accelerated, the respective wire members 6 are controlled so as to be at the set tension.
[0041]
Further, when the ECU 20 detects a normal traveling state of the vehicle 1 by sensors (not shown), a signal including information on this state is input from the ECU 20 to the control device 14. When the signal is input, the control device 14 changes the energization voltage of each coil member 12 by the energization control unit 18 to bring each wire member 6 into a relaxed state.
[0042]
The reference value adjustment program 102 is a program that adjusts the reference value of the energization voltage to each coil member 12 when applying tension to each wire member 6 using the electromotive force detected by the electromotive force detection unit 19.
[0043]
Specifically, the electromotive force detection section 19 detects the voltage of the coil member 12. By the way, when the tension of the wire member 6 changes and the magnet 6b moves, an electromotive force is generated in the coil member 12 and the voltage of the coil member 12 fluctuates. Here, when the wire member 6 becomes slack, the magnet 6b does not move, and the voltage of the coil member 12 becomes a constant value. As shown in FIG. 5, in the relationship between the voltage applied to the coil member 12 and the magnitude of the AC component of the voltage fluctuation, when the applied voltage is lower than a predetermined value, the magnitude of the AC component becomes zero. In the present embodiment, when the voltage of the coil member 12 is detected to be constant by the electromotive force detection unit 19 in a state where the engine 3 is vibrated, the voltage changes the wire member 6 from the tensioned state to the relaxed state. The reference value of the energizing voltage is updated as the voltage value at this time.
[0044]
As shown in FIG. 2, one end of the wire member 6 of each motor support device 4 extends in the roll direction of the engine 3. In the present embodiment, each wire member 6 is provided so as to be inclined at an angle of approximately 45 ° from the upper side of the engine 3, and the angle between the wire members 6 is approximately 90 °. .
[0045]
In the prime mover support structure configured as described above, when forces in the bending direction and the compression direction act on the wire member 6, the wire member 6 is loosened between the engine 3 side and the vehicle body 2 side. Thus, when the engine 3 vibrates, the vibration components in the bending direction and the compression direction of the wire member 6 are not transmitted to the vehicle body 2 due to the slackness of the wire member 6. Further, the vibration component in the tensile direction of the wire member 6 is attenuated by the vibration damping unit 5 connected in series to the wire member 6. That is, among the vibration components of the engine 3, the vibration in the direction of pulling the wire member 6 is suppressed, and the vibration in the other direction is not suppressed.
[0046]
In the present embodiment, since the pair of prime mover support devices 4 is provided in the roll direction of the engine 3, when the engine 3 vibrates, a vibration component in one direction in the roll direction is attenuated by one prime mover support device 4 and the other direction. The (reverse) vibration component is attenuated by the other motor support device 4. That is, only the pulling force from the engine 3 acts on the mounting portion of each motor support device 4 on the vehicle body side.
[0047]
If the tension of the wire member 6 is adjusted by the control device 14 so that the wire member 6 is in a relaxed state, the vibration of the wire member 6 in the tension direction is suppressed when the engine 3 moves to a position where the wire member 6 is tensioned. When the wire member 6 is in a tensioned state, the vibration of the wire member 6 in the pulling direction is suppressed without the engine 3 moving. As described above, the position where the damping force of the vibration damping unit 5 acts on the engine 3 can be adjusted.
[0048]
FIG. 6 shows a graph of a specific tension fluctuation when the engine 3 vibrates. In FIG. 6, L1 is a diagram showing a change in tension of the wire member 6 in a relaxed state, L2 is a diagram showing a change in tension of the wire member 6 in a state in which tension is applied until tension is applied, and L3 is a diagram after tension is applied. FIG. 7 is a diagram showing a change in tension of a wire member 6 to which a tension is further applied.
[0049]
As shown in FIG. 6, in a state where the wire member 6 is relaxed, the vibration of the engine 3 is allowed, so that the tension of the wire member 6 does not change. Further, in a state where the tension until the wire member 6 is tensioned is applied, even if the engine 3 moves in the compression direction of the wire member 6, the wire member 6 is relaxed, so that the tension of the wire member 6 does not change. When the engine 3 moves in the pulling direction of the wire member 6, the tension of the wire member 6 increases. Further, in a state where the tension is applied to the wire member 6 from the tensioned state, when the engine 3 moves in the compression direction of the wire member 6, the tension decreases within a range where the wire member 6 does not loosen, and the engine 3 moves in the tension direction of the wire member. Moves, the tension of the wire member 6 increases.
[0050]
FIG. 7 shows a voltage change of the coil member 12 at this time. In FIG. 7, L4 is a diagram illustrating a voltage change of the wire member 6 in a relaxed state, L5 is a diagram illustrating a voltage change of the wire member 6 in a state in which tension is applied until tension is applied, and L6 is a diagram after tension is applied. FIG. 7 is a diagram showing a voltage change of a wire member 6 to which a tension is further applied.
[0051]
As shown in FIG. 7, in a state where the wire member 6 is relaxed, even if the engine 3 vibrates, the magnet 6b does not move and the voltage does not fluctuate. Further, in a state where the tension until the wire member 6 is tensioned is applied, the voltage becomes constant when the wire member 6 is relaxed, and when the tension of the wire member 6 increases, the voltage fluctuates due to the movement of the magnet 6b. I do. Further, in a state where the tension is applied from the tension state to the wire member 6, the voltage fluctuates because the position of the magnet 6 b changes irrespective of whether the engine 3 moves in the tension direction or the compression direction.
[0052]
In addition, since the control device 14 changes the amount of electricity to each coil unit 12 according to the running state of the vehicle 1, the tension of the wire member 6 of each motor support device 4 is thereby changed. In the present embodiment, when the engine 3 is started, stopped, and idling, that is, when the engine 3 has a relatively low rotation speed and it is necessary to suppress the vibration of the engine 3, the tension is applied so that the wire member 6 is tightened. Is changed, and the vibration of the engine 3 is suppressed. Further, when the vehicle 1 is suddenly accelerated, that is, when the engine 3 moves relatively easily with respect to the vehicle body 2 and it is necessary to regulate the movement of the engine 3, the tension is changed so that the wire member 6 is tensioned. 3 is restrained by a predetermined damping force. Further, during normal running of the vehicle 1, the tension is changed so that the wire member 6 is relaxed, and the vibration of the engine 3 is allowed, so that the vibration is not transmitted to the vehicle body 2 side.
[0053]
Further, when the engine 3 vibrates in a state where the wire member 6 is tensioned, the magnet 6 b moves according to the tension of the wire member 6, and the electromotive force of the coil member 12 due to the movement of the magnet 6 b is detected by the electromotive force detection unit 19. Is done. In the present embodiment, as described above, the reference value of the energization voltage is updated based on the electromotive force when the voltage of the coil member 12 is constant, and the energization voltage to the coil member 12 by the energization control unit 18 is Adjusted. Then, the magnet 6b moves according to the adjusted energizing voltage, and the tension of the wire member 6 is adjusted. When the engine 3 vibrates in a state where the wire member 6 is relaxed, the magnet 6b does not move, so that no electromotive force is generated in the coil member 12 due to the movement of the magnet 6b.
[0054]
As described above, according to the prime mover support device 4 of the present embodiment and the prime mover support structure including the same, no force in the bending direction and compression direction acts on the mounting portion of the device 4 on the vehicle body 2 side, and the mounting portion is As a result, the strength and durability of the vehicle body 2 can be significantly improved. That is, it is not necessary to provide a reinforcing member or the like in the mounting portion of the vehicle body 2 so as to resist the forces in the bending direction and the compression direction of the device 4, and the manufacturing cost and weight of the vehicle 1 can be reduced.
[0055]
Further, since the device 4 allows the movement in the bending direction and the compression direction, the vibration of the engine 3 is hardly transmitted to the vehicle body 2 side, and the vibration and the sound in the vehicle compartment can be reduced. That is, the number of parts to be attached to the vehicle body 2 such as the vibration damping material and the sound insulation material can be reduced, and the manufacturing cost and weight of the vehicle 1 can be reduced.
[0056]
In addition, since the vibration of the engine 3 is suppressed only in the pulling direction of the wire member 6, the device 4 can be arranged so as to suppress only the vibration component in the direction of the largest vibration. The degree of freedom in vehicle design can be increased. In the present embodiment, since the prime mover support device 4 is provided symmetrically in the roll direction and the pitch direction of the engine 3, vibration in the roll direction and the pitch direction of the engine 3 is suppressed. Further, in the present embodiment, since each motor support device 4 is inclined by approximately 45 ° in a front view, it is possible to suppress vibration in the vertical and horizontal directions.
[0057]
Further, according to the prime mover support device 4 and the prime mover support structure including the same according to the present embodiment, the tension of the wire member 6 is configured to be adjustable, so that the position where the damping force of the vibration damping unit 5 acts on the engine 3 is determined. Adjustment is possible. Therefore, the position where the wire member 6 is tensioned, that is, the displacement amount of the engine 3 where the vibration is allowed can be adjusted. In addition, the tension of the wire member 6 is adjusted according to the running state of the vehicle 1 and the like, and the restrained state of the engine 3 suitable for the running state can be realized.
[0058]
Further, according to the prime mover support device 4 of the present embodiment and the prime mover support structure including the same, the magnet 6b moves in the longitudinal direction of the wire member 6 by changing the amount of current supplied to each coil member 12, and the wire member Since the tension of the wire member 6 is adjusted, an accurate adjustment of the tension of the wire member 6 is realized by changing the amount of current. Further, the tension of the wire member 6 can be adjusted without contact with the wire member 6, which is advantageous in reliability of the device 4.
[0059]
Further, according to the prime mover support structure of the present embodiment, since the pair of the prime movers is provided symmetrically with respect to the roll direction of the engine 3, the bending direction of the prime mover support device 4 to the mounting portion is suppressed while suppressing the vibration in the roll direction of the engine 3. In addition, the load in the compression direction can be reduced. Further, the vibration in the roll direction, in which the vibration component of the engine 3 becomes relatively large, can be suppressed, which is extremely advantageous in practical use.
[0060]
Further, according to the prime mover support structure of the present embodiment, the tension of each wire member 6 is changed according to the traveling state of the vehicle 1, so that the vibration of the engine 3 is suppressed according to the traveling state. The auxiliary equipment connected to the engine 3 is protected, the engine 3 is restrained to suppress the relative movement with respect to the transmission side, the power train system is protected, and the vibration is not transmitted to the vehicle body 2 side. Thus, the ride comfort of the occupant can be improved.
[0061]
Further, according to the prime mover support structure of the present embodiment, since the energization voltage to the coil member 12 by the energization control unit 18 is adjusted, the energization voltage of the coil member 12 and the wire member 6 When the correspondence relationship with the tension changes, the tension of the wire member 6 of each motor support device 4 can be adjusted. Thereby, the device 4 can be operated accurately over a long period of time.
[0062]
Further, according to the prime mover support device 4 of the present embodiment and the prime mover support structure including the same, the damping characteristics of the vibration damping unit 5 are set so that the damping force becomes highest at the resonance frequency in the roll direction of the engine 3. Therefore, it is effective for suppressing the vibration of the engine 3 in the roll direction.
[0063]
In addition, according to the prime mover support device 4 of the present embodiment and the prime mover support structure including the same, since the wire member 6 is used as the relaxation member, the device 4 can be manufactured at low cost. Further, by changing the length of the wire member 6, the layout of the engine 3 and the vehicle body 2 can be accommodated, and there is an advantage that the design in the engine room is easy.
[0064]
In the above-described embodiment, the vehicle 1 on which the engine 3 is mounted is shown as a prime mover. However, the prime mover may be, for example, an electric motor or the like.
[0065]
In the above-described embodiment, the vibration damping unit 5 is provided on the vehicle body 2 side, and the wire member 6 is provided on the engine 3 side. However, the vibration damping unit 5 is provided on the engine 3 side, and the wire member 6 is provided on the vehicle body 2 side. It may be.
[0066]
Further, in the embodiment, the wire member 6 is used as the relaxation member. However, the relaxation member is, for example, a rope, a chain, a multi-node link member in which a plurality of links are connected in series, or the like. Other members that allow deformation in the compression direction and the bending direction may be used.
[0067]
Further, in the above-described embodiment, as the tension adjusting means, the coil member 12 is energized to change the position of the magnet 6b to adjust the tension of the wire member 6, but the wire member 6 is adjusted by other electric means. May be adjusted. Further, the tension adjusting means may be, for example, a machine in which a winding device around which the other end of the wire member 6 is wound is provided, and the tension is adjusted by changing a winding amount of the other end of the wire member 6. It may be constituted by an appropriate means.
[0068]
In the above-described embodiment, the wire member 6 extends in the roll direction of the engine 3. However, the wire member 6 may extend in the pitch direction and the yaw direction of the engine 3. May be extended.
[0069]
In the above-described embodiment, the wire members 6 are provided to be inclined at an angle of approximately 45 ° from the upper side of the engine 3. However, for example, each wire member 6 is It may be provided so as to extend in the direction. In this case, each wire member 6 has an angle difference of 180 ° with respect to the roll direction, and is symmetric with respect to the roll direction of the engine 3.
[0070]
Further, in the above-described embodiment, the case where the respective wire members 6 are tightened to restrain the engine 3 when the vehicle 1 is suddenly accelerated is shown. In addition, the engine 3 is also restrained when the vehicle 1 is suddenly decelerated. You may do so.
[0071]
Further, in the above-described embodiment, an example in which the tension of the wire member 6 is adjusted so as to cope with aging of the device 4 or the like is described. The vibration state and the like can be monitored, and the initial tension setting state stored in the control device 14 in advance can be automatically adjusted according to the use state of the vehicle 1, the vibration state of the engine 3, and the like.
[0072]
Further, in the above-described embodiment, the vibration damping portion 5 is described as a case in which the housing 7 is filled with the liquid viscous fluid 9. However, the vibration damping portion 5 attenuates the vibration with a rubber material or the like. Needless to say, specific details such as detailed structures can be appropriately changed.
[0073]
【The invention's effect】
As described in detail above, according to the present invention, no force in the bending direction and compression direction acts on the mounting portion of the device on the vehicle body side, and the mounting portion is not twisted or pressed by the device. Strength and durability can be dramatically improved. That is, it is not necessary to provide a reinforcing member or the like at the mounting portion of the vehicle body so as to resist the forces in the bending direction and the compression direction of the device, and the manufacturing cost and weight of the vehicle can be reduced.
Further, since the device allows the movement in the bending direction and the compression direction, the vibration of the prime mover is hardly transmitted to the vehicle body side, and the vibration and the sound in the vehicle interior can be reduced. That is, the number of parts to be attached to the vehicle body, such as the vibration damping material and the sound insulation material, can be reduced, and the manufacturing cost and weight of the vehicle can be reduced.
Also, since the vibration of the prime mover is suppressed only in the tension direction of the relaxation member, it is possible to arrange only a device that suppresses only the vibration component in the direction in which the vibration is the largest. And increase the degree of freedom in vehicle design.
[Brief description of the drawings]
FIG. 1, showing an embodiment of the present invention, is a schematic side view of a vehicle showing a support state of an engine.
FIG. 2 is an explanatory front view of a part of a vehicle showing a support state of an engine.
FIG. 3 is a schematic configuration block diagram illustrating a vibration damping unit and a control device connected thereto.
FIG. 4 is a graph showing a relationship between a frequency and a damping force, which is a vibration characteristic of a vibration damping unit.
FIG. 5 is a graph showing a relationship between an applied voltage of a coil member and an AC component of a voltage change due to relaxation of a wire member.
FIG. 6 is a graph showing a change in wire tension when the engine vibrates.
FIG. 7 is a graph showing a voltage change of a coil member when the engine vibrates.
[Explanation of symbols]
1 vehicle
2 Body
3 Engine
4 Motor support device
5 Vibration damping part
6 wire members
6b magnet
12 Coil member
14 Control device
15 CPU
16 ROM
17 RAM
18 Current control section
19 Electromotive force detector
101 Tension change program
102 Reference value adjustment program

Claims (7)

A motor support device interposed between the prime mover and the vehicle body,
A vibration damping unit disposed on one side of the prime mover side and the vehicle body side;
A relaxation member that is arranged in series with the vibration damping unit on the other side of the motor side and the vehicle body side and extends in a predetermined direction;
A motor support device comprising: The motor support device according to claim 1, further comprising a tension adjusting means for adjusting a tension of the relaxing member. The tension adjusting means,
A coil member energized from the outside,
A magnetic body that is connected to one end of the relaxing member and moves in the longitudinal direction of the relaxing member when the coil member is energized,
The motor support device according to claim 1 or 2, further comprising: A motor support structure, wherein a pair of the motor support devices according to any one of claims 1 to 3 are provided symmetrically with respect to a predetermined direction of the motor. The prime mover support structure according to claim 4, wherein one end side of each of the relaxation members is connected to the prime mover such that the one end side extends in a roll direction of the prime mover. A pair of prime mover support devices according to claim 3, symmetrically provided in a predetermined direction of the prime mover,
A control device electrically connected to each of the coil members,
The control device includes:
Energizing means for energizing the respective coil members,
An energization amount changing unit that changes an energization amount to each coil member by the energization unit according to a traveling state of the vehicle;
A prime mover support structure comprising: The control device includes:
Electromotive force detection means for detecting the electromotive force of each of the coil members due to the movement of the magnetic material,
Voltage adjusting means for adjusting an energizing voltage to each of the coil members by the energizing means based on the electromotive force detected by the electromotive force detecting means,
The motor support structure according to claim 6, comprising:

Images