CA1202289A - Supporting apparatus for power unit - Google Patents
Supporting apparatus for power unitInfo
- Publication number
- CA1202289A CA1202289A CA000440379A CA440379A CA1202289A CA 1202289 A CA1202289 A CA 1202289A CA 000440379 A CA000440379 A CA 000440379A CA 440379 A CA440379 A CA 440379A CA 1202289 A CA1202289 A CA 1202289A
- Authority
- CA
- Canada
- Prior art keywords
- stopper
- power unit
- cylinder
- supporting
- mount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1291—Supports comprising stoppers
Abstract
ABSTRACT OF THE DISCLOSURE
A supporting apparatus for a power unit one embodiment comprises an inner mount cylinder connected to a power unit, an outer mount cylinder connected to a frame of a vehicle, a resilient member for connection between the inner and outer mount cylinders, an outer stopper cylinder secured to the outer mount cylinder, and an inner stopper cylinder secured to the power unit through an adjustably connecting means. The inner and outer stopper cylinders are connected to each other through a resilient member with the inner stopper cylinder being adapted to be placed into abutting engagement with the outer stopper cylinder. The inner stopper cylinder is adapted to be securely fastened after the outer and inner mount cylinders have been mounted on the power unit and the vehicle frame, respectively. In an alternative embodiment, the power unit is connected to the outer mount cylinder and outer stopper cylinder, while the vehicle frame is connected to the inner mount cylinder and inner stopper cylinder.
A supporting apparatus for a power unit one embodiment comprises an inner mount cylinder connected to a power unit, an outer mount cylinder connected to a frame of a vehicle, a resilient member for connection between the inner and outer mount cylinders, an outer stopper cylinder secured to the outer mount cylinder, and an inner stopper cylinder secured to the power unit through an adjustably connecting means. The inner and outer stopper cylinders are connected to each other through a resilient member with the inner stopper cylinder being adapted to be placed into abutting engagement with the outer stopper cylinder. The inner stopper cylinder is adapted to be securely fastened after the outer and inner mount cylinders have been mounted on the power unit and the vehicle frame, respectively. In an alternative embodiment, the power unit is connected to the outer mount cylinder and outer stopper cylinder, while the vehicle frame is connected to the inner mount cylinder and inner stopper cylinder.
Description
This invention rela-tes to a suppor-ting appara-tus for a power unit adapted -to be used for suppoxting on a vehicle a power unit inbluding an engine, a transmission and the like.
The present invention will be illustrated by way of the accompanying drawings, in which:-Fig. 1 is a side eleva-tional view of a conven-tional type of power unit supporting apparatus;
Fig. 2 is a perspective view of a power unit sup-porting apparatus showing a first embodiment of -the present invention with i-ts component parts detached from each other;
Fig. 3 is a side elevational view of the first embodiment with its component parts assembled;
Fig. 4 is a view similar to Fig. 3 bu-t showing a second embodiment of the invention;
Fig. 5 is a view similar to Fig. 3 but showing a third embodiment of the invention;
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Fig. 6 is a view similar to Fig. 3 but showing a fourth embodiment of the invention; and Fig. 7 is a view similar to Fig. 3 but showing a fifth embodiment of the invention.
As a conventional suppor-ting apparatus for a power unit, there is known, for example, an apparatus of the con-struction, as shown in Fig. 1, in which between an inner cylinder 1 and an outer cylinder 2, there is interposed a mount insulator 3 which is formed of elas-tic material such as rubber and which is cure-bonded to the inner and ou-ter .; .
.
. ~ -- 1 --lZQ2~
cylindexs 1,2 wi-th a pair of s-topper rubbers 4 being cure-bonded to those portions of the inner surface of the outer cylinder 2 which face respectively to the upper and lower surfaces of the mount insula-tor 3.
Accordingly, in installing such a conven-tional type of power unit supporting apparatus, it is customary practice to fixedly secure the inner cylinder 1 to a bracket S on a frame of a vehicle by means of a mounting bolt 6, and also a bracket 7 on the ou-ter cylinder 2 to a bracke-t 8 on a power unit (not shown) by means of a moun-ting bolt or bolts 9.
With such a conventional type of power unit sup-porting apparatus, however, i-t is constructed such that a stopper clear~Ye 11 between the upper stopper rubber 4 and the adjacen-t upper surface of the mount insulator 3 and a stopper clearance 12 between the lower stopper rubber ~ and the adjacent lower surface of the mount insulator 3 are determined by the position of the insulator 3 which shares part of the load of the~power unit and is yieldingly dis-placed thereby, as a result of which the clearances 11 and 1~
are varied in dependence on variation of weightamong-the power units used resul-ting from differences in the specifications of the power units (with or without air conditioning equip-ment and/or power steering equipment, specifications of the transmissions and the like), variation of production char-acteristics of the insulators, accuracy in assembly of the vehicle frame, and accuracy in the mounting of the power units, thus giving rise to a problem tha-t vibrations of the vehicle and noises in the passenger compartment of the vehicle are generated, as well as offering difficulty in con-trolling the stopper clearances.
In view of the above, -the present invention provides a supporting apparatus for a power unit wherein the stopper
The present invention will be illustrated by way of the accompanying drawings, in which:-Fig. 1 is a side eleva-tional view of a conven-tional type of power unit supporting apparatus;
Fig. 2 is a perspective view of a power unit sup-porting apparatus showing a first embodiment of -the present invention with i-ts component parts detached from each other;
Fig. 3 is a side elevational view of the first embodiment with its component parts assembled;
Fig. 4 is a view similar to Fig. 3 bu-t showing a second embodiment of the invention;
Fig. 5 is a view similar to Fig. 3 but showing a third embodiment of the invention;
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Fig. 6 is a view similar to Fig. 3 but showing a fourth embodiment of the invention; and Fig. 7 is a view similar to Fig. 3 but showing a fifth embodiment of the invention.
As a conventional suppor-ting apparatus for a power unit, there is known, for example, an apparatus of the con-struction, as shown in Fig. 1, in which between an inner cylinder 1 and an outer cylinder 2, there is interposed a mount insulator 3 which is formed of elas-tic material such as rubber and which is cure-bonded to the inner and ou-ter .; .
.
. ~ -- 1 --lZQ2~
cylindexs 1,2 wi-th a pair of s-topper rubbers 4 being cure-bonded to those portions of the inner surface of the outer cylinder 2 which face respectively to the upper and lower surfaces of the mount insula-tor 3.
Accordingly, in installing such a conven-tional type of power unit supporting apparatus, it is customary practice to fixedly secure the inner cylinder 1 to a bracket S on a frame of a vehicle by means of a mounting bolt 6, and also a bracket 7 on the ou-ter cylinder 2 to a bracke-t 8 on a power unit (not shown) by means of a moun-ting bolt or bolts 9.
With such a conventional type of power unit sup-porting apparatus, however, i-t is constructed such that a stopper clear~Ye 11 between the upper stopper rubber 4 and the adjacen-t upper surface of the mount insulator 3 and a stopper clearance 12 between the lower stopper rubber ~ and the adjacent lower surface of the mount insulator 3 are determined by the position of the insulator 3 which shares part of the load of the~power unit and is yieldingly dis-placed thereby, as a result of which the clearances 11 and 1~
are varied in dependence on variation of weightamong-the power units used resul-ting from differences in the specifications of the power units (with or without air conditioning equip-ment and/or power steering equipment, specifications of the transmissions and the like), variation of production char-acteristics of the insulators, accuracy in assembly of the vehicle frame, and accuracy in the mounting of the power units, thus giving rise to a problem tha-t vibrations of the vehicle and noises in the passenger compartment of the vehicle are generated, as well as offering difficulty in con-trolling the stopper clearances.
In view of the above, -the present invention provides a supporting apparatus for a power unit wherein the stopper
2 --',i~,,, l ~
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clearances are always main-tained constan-t irrespective of j variations in the weight of -the power uni-t or other factors.
I
I The present invention also provides a supporting ¦ 5 apparatus for a power unit wherein control of -the stopper clearances is effected in quite a simple and easy manner.
¦ According to the present invention there is pro-I vided a supporting apparatus for a power uni-t which comprises ¦ 10 a first supporting member adapted to be connected to a power ¦ unit, a second supporting member adapted to be connected to the body of a vehicle and a resilient member for connection between the first and second supporting members, a stopper means comprising a first s-topper member adap-ted to be con-nected to the body of the vehicle and a second stopper mem-ber adapted to be connected to the power unit, the first and second stopper members adapted to come into abutting ¦ engagment with each other, and an adjustable connecting means for connecting the first stopper member to the body of the vehicle or for connecting the second stopper member to the power uni-t so as to fasten securely the first or second stopper member after the first and second supporting members ¦ have been mounted on the power unit and the body, respectively.
Suitably said first and second stopper members are connected to each other through a second resilient memberA Preferably said first supporting member is an inner mount cylinder fixedly connected to said power unit through a first bracket means and said second supporting member is an outer mount cylinder fixedly connected to said body through a second bracke-t means. More preferably said first stopper member is an outer stopper cylinder secured to said body through said outer mount cylinder and said second stopper member is an inner stopper cylinder connec-ted to saidPWer unit through said adjustably connecting means provided in said first bracket means. Desirably said adjustably connecting means has an elongated aperture to receive said second stopper
~æ~
clearances are always main-tained constan-t irrespective of j variations in the weight of -the power uni-t or other factors.
I
I The present invention also provides a supporting ¦ 5 apparatus for a power unit wherein control of -the stopper clearances is effected in quite a simple and easy manner.
¦ According to the present invention there is pro-I vided a supporting apparatus for a power uni-t which comprises ¦ 10 a first supporting member adapted to be connected to a power ¦ unit, a second supporting member adapted to be connected to the body of a vehicle and a resilient member for connection between the first and second supporting members, a stopper means comprising a first s-topper member adap-ted to be con-nected to the body of the vehicle and a second stopper mem-ber adapted to be connected to the power unit, the first and second stopper members adapted to come into abutting ¦ engagment with each other, and an adjustable connecting means for connecting the first stopper member to the body of the vehicle or for connecting the second stopper member to the power uni-t so as to fasten securely the first or second stopper member after the first and second supporting members ¦ have been mounted on the power unit and the body, respectively.
Suitably said first and second stopper members are connected to each other through a second resilient memberA Preferably said first supporting member is an inner mount cylinder fixedly connected to said power unit through a first bracket means and said second supporting member is an outer mount cylinder fixedly connected to said body through a second bracke-t means. More preferably said first stopper member is an outer stopper cylinder secured to said body through said outer mount cylinder and said second stopper member is an inner stopper cylinder connec-ted to saidPWer unit through said adjustably connecting means provided in said first bracket means. Desirably said adjustably connecting means has an elongated aperture to receive said second stopper
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.
member, thereby accommodating the relative movemen-t between said first and second suppor-ting members.
In one embodiment of -the present invention the apparatus comprises an inner mount cylinder connec-ted to a power unit, an outer mount cylinder connected to a frame of a vehicle, a resilient member for connec-tion between said inner and outer mount cylinders, an ou-ter stopper cylinder secured to said outer mount cyli~der, and an inner stopper cylinder secured to said power unit through an adjustably connnecting means, said inner and outer stopper cylinders being connec-ted to each other through - a resilient member, said inner s-topper cylinder being adapted to be placed into abutting engagemen-t with said outer s-topper cylinder, and said inner stopper cylinder being adap-ted to be securely fas-tened after said outer and inner mount cylinders have been mounted on said power unit and said vehicle frame, respectively.
.
In another embodiment of the present invention said first supporting member is an inner mount cylinder fixedly connected to said body through a first bracket means and said second supporting member is an outer mount cylinder fixedly connected to said pump unit through a second bracket . means. Suitably said first stopper member is an outer stop-~ per cylinder secured to said power unit through said outer mount cylinder and said second stopper member is an inner stopper cylinder connected to said body through said adjustably connecting . means provided in said first bracket means.
Preferably said adjustably connecting means has an elongated aperture to receive said second stopper member, thereby accommodating the relative movement between said first and second supporting members.
Referring once more to the accompanying drawings and in par-ticular to Figs. 2 and 3 which illustrate a first - : . , ..
- 3a -' '`
preferred embodiment oE the invention, there is shown a supporting apparatus for a power unit constructed according to the principles of the present invention, in which be-t-ween an outer mount cylinder or pipe 10 constituting a second supporting member and an inner mount cylinder or pipe 11 constituting a flrst supporting member, there is a mount insulator 12 formed of resilient material such as rubber which is cure-bonded to the outer and inner cylinders l0 and 11. Similarly, between an outer stopper cylinder 13 consti-tu-ting a first stopper member and an inner stopper cylinder 14 constituting a second stopper member, there are stopper insulators 15 and 15a formed of resilient material such as rubber, the insulator 15 being cure-bonded to -the outer and inner stopper cylinders 13 and 14 whilst the in-sulators 15a being cure-bonded to -the outer stopper cyli.nder 13 with first and second s-topper clearances 13 and 14 formed between the insulator 15 and the insulators 15a, respectively.
A connecting member 16 firmly connects the outer mount cylin-der 10 and the outer stopper cylinder 13 wi-th each other.
A mounting : 3b 1 bracket 17 is firmly secured to the outer mount cylinder 10.
As a mounting means on the side of the power unit 18, there are employed a mounting bolt 19 and a nut 20 for the mounting portion formed of the outer and inner mount cylinders 10, 11, as well as a mounting bolt 21 and a nut 22 for the stopper portion formed of the outer and inner stopper cylinders 13, 14, whereas as a mounting means on the side of the vehicle frame 23, there are employed mounting bolts 24, 25 and nuts (not shown) for the mounting bracket 17. Secured to ~he power unit 18 by means of bolts 18a is a bracket 26 which is formed with a pair of elongated apertures 27 for the stopper mounting bolt 21 and a pair of through holes 28 for the mounting bolt 19 of the mounting portion. A bracke-t 29 welded to the vehicle frame 23 has a pair of hollow cylinders 30 fixedly secured thereto for passage of the bolts 24, 25.
The stopper mounting bolt 21, the nut 22 and the elongated apertures 27 in the bracket 26 adjacent to the power unit conjointly constitute an adjustable connecting means.
Upon installation o~ the powér unit supporting apparatus as illustrated in Figs. 2 and 3, the bracket 17 on the outer mount cylinder 10 is first fixed to the vehlcle frame 23 by means of the mounting bolts 24, 25 to firmly secure the outer mount cylinder 10 and the outer stopper cylinder 13 to the vehicle frame, as shown in Fig. 2. Subsequently, the mounting bolt 19 for the mounting portion is inserted into the through holes 28 in the bracket 26 on the power unit 18 and the inner mount cylinder 11 and then fixed thereto by tightening the nut 20, as a consequence of which the mount insulator 12 is yieldingly deformed due to part of the load of the power uni-t 18.
Thereafter, the inner stopper cylinder 14 with the stopper insulator 15 is fastened to the power unit 18 by use of the stoppRr moun-ting bolt 21 and the nut 22.
Accordingly, in the case of the first embodiment as described, it is possible to mount the power unit 18 on the vehicle frame 23 in a manner such that the stopper insulator 15 228~
--s--1 is not subjected to any load from the power unit 18 and thus is held stationary. As a result, the stopper clearances 13 and 14 between the intermediate stopper insulator 15 and the upper and lower stopper insulators 15a, respectively, can always be held at constant values independent of variations in the weight of the power unit 18 and in the characteristics of the mount insulator 12. Further, in the event that the mount insulator 12 is so fatigued under the influence of heat as to change the preset proper amounts of the stopper clearances 13 and 14, the resultant change in the stopper clearances 13 and 14 can be adjusted or corrected in quite a simple and easy manner by loosening the nut 22 on the stopper mounting bolt 21 and retigh-tening the nut 22 after the bolt 21 has been displaced properly in the elongated apertures 27.
Fig. 4 illustrates a second embodiment of the invention wherein the mount insulator 12 is inclined such that a surface of the mount insulator faces to the adjacent end surface of the power unit 18. With this arrangement, during the period of engine idling operation/ noises confined in the engine room are substantially reduced due to reduction of the spring constant of the mounting insulator 12 in the direction of engine vibrations.
Consequentlv, this embodiment is particularly suitable for the mounting of a power unit for a FF (front-engine and front-wheel-drive) type vehicle the engine of which is situated transverselyO
Fig. 5 illustrates a third embodiment wherein in addition to the fact that the mounting insulator 12 is inclined to face to the adjacent end surface of the power unit 18 as in the case of the second embodiment, the stopper insulators 15,15a are also inclined but in a direction, with respect to the vertical, opposite to the direction in which the adjacent end surface of the power unit 18 is inclined, so that the stopper clearances 13 and 14 provide a minimum displacement of the power unit 18~
Accordingly, thi~; embodiment is preferred in the event that the amplitude of engine vibrations or the maximum displacement of the ~, ., --6~
1 power unit 18 should be minimized.
Thus, it is to be noted that adjustment of the angle of inclination of the mount insulator 12 and/or the stopper insulator 15, as in the cases of the second and third embodiments, provides the advantage that individual tuning is possible to meet the different reguirements of power unit support means. I
Referring to a fourth embodiment as shown in Fig. 6, the stopper portion is of dual structure wherein the addition of an auxiliary cylinder 14' concentrically interposed hetween the inner and outer stopper cylinders 14 and 13 provides, in addition to the aforementioned advantages brought about by the first embodiment, a dynamic damping function for the power unit supporting apparatus by utilizing the auxiliary cylinder 14' as a mass.
Referring to a fifth embodiment as illustrated in Fig. 7, an enlarged, rectangularly shaped hollow body 10' is commonly employed instead of the outer cylinders and a mount insulator 12 and a stopper insulator 15 are disposed in parallel relative to each other to connect the inner mount cylinder and the inner stopper cylinder to the rectangularly shaped hollow body 10', respectively. An upper stopper insulator 15a is secured to the inner surface of the upper side of the common hollow body 10' with an upper stopper clearance 13 formed between the upper stopper insulator 15a and an interrnediate stopper insulator 15 A mount insulator 12 acts as a lower stopper insulator with a lower stopper clearance 14 formed between the mount insulator 12 and the stopper insulator 15. Thus, this embodiment enables reduction in number of the component parts. Although the stopper clearance 13 can be controlled precisely, the stopper clearance ` - 14 may be varied to a certain extent due to variation in the weight of the engine. However, such variation in the stopper clearance 14 would pose no problem if a pair oE such supporting apparatus - are disposed in opposed relation with each other.
Summarizing with one embodiment according to the present 2~
invention, a supporting apparatus for a power unit comprises an inner mount cylinder connected to a power unit, an outer mount cylinder connected to a frame of a vehicle, a resi-lient member for connection between the inner and outer mount cylinders, an outer stopper cylinder secured to the outer mount cylinder, and an inner stopper cylinder secured to the power unit through an adjustable connecting means.
The inner and outer stopper cylinders are connected to each other through a resilient member with the inner stopper cylinder being adapted to be placed into abutting engage-ment with the outer stopper cylinder. The inner stopper cylinder is adaptd to be securely fastened after the outer and inner mount cylinders have been mounted on the power unit and the vehicle frame, respectively. Such an arrange-ment provides an advantage that a stopper clearance between the first and second stopper members can always be main~
tained constant irrespective of variations in the weight oF
the power unit because the second stopper members can be mounted after the resilient member connecting between the first and second supporting members has been yielded under the action of a static load.
Further, in the event that the resilient member is so fatigued as to deviate the stopper clearance from its present value, the stopper clearance can be readily adjusted or corrected properly to the preset value simply by reset-ting the second stopper means so that control of the stopper clearance may be effected by a simple operation in quite an easy manner.
Although in the foregoing, some presently pre-ferred embodiments of the invention have been described with reference to the accompanying drawings, the invention is not limited to these embodiments. For example, in all but the last of the embodiments referred to above, the inner cylin-ders are secured to the power unit and the outer cylinders ~zz~
are secured to the vehicle frame, but the reverse construc-tion may be possible for any of the embodimen-ts in which the inner cylinders are secured to the vehicle Frame and the outer cylinders -to the power unit.
.
~ . ; 8 -
~2~ 8~
.
member, thereby accommodating the relative movemen-t between said first and second suppor-ting members.
In one embodiment of -the present invention the apparatus comprises an inner mount cylinder connec-ted to a power unit, an outer mount cylinder connected to a frame of a vehicle, a resilient member for connec-tion between said inner and outer mount cylinders, an ou-ter stopper cylinder secured to said outer mount cyli~der, and an inner stopper cylinder secured to said power unit through an adjustably connnecting means, said inner and outer stopper cylinders being connec-ted to each other through - a resilient member, said inner s-topper cylinder being adapted to be placed into abutting engagemen-t with said outer s-topper cylinder, and said inner stopper cylinder being adap-ted to be securely fas-tened after said outer and inner mount cylinders have been mounted on said power unit and said vehicle frame, respectively.
.
In another embodiment of the present invention said first supporting member is an inner mount cylinder fixedly connected to said body through a first bracket means and said second supporting member is an outer mount cylinder fixedly connected to said pump unit through a second bracket . means. Suitably said first stopper member is an outer stop-~ per cylinder secured to said power unit through said outer mount cylinder and said second stopper member is an inner stopper cylinder connected to said body through said adjustably connecting . means provided in said first bracket means.
Preferably said adjustably connecting means has an elongated aperture to receive said second stopper member, thereby accommodating the relative movement between said first and second supporting members.
Referring once more to the accompanying drawings and in par-ticular to Figs. 2 and 3 which illustrate a first - : . , ..
- 3a -' '`
preferred embodiment oE the invention, there is shown a supporting apparatus for a power unit constructed according to the principles of the present invention, in which be-t-ween an outer mount cylinder or pipe 10 constituting a second supporting member and an inner mount cylinder or pipe 11 constituting a flrst supporting member, there is a mount insulator 12 formed of resilient material such as rubber which is cure-bonded to the outer and inner cylinders l0 and 11. Similarly, between an outer stopper cylinder 13 consti-tu-ting a first stopper member and an inner stopper cylinder 14 constituting a second stopper member, there are stopper insulators 15 and 15a formed of resilient material such as rubber, the insulator 15 being cure-bonded to -the outer and inner stopper cylinders 13 and 14 whilst the in-sulators 15a being cure-bonded to -the outer stopper cyli.nder 13 with first and second s-topper clearances 13 and 14 formed between the insulator 15 and the insulators 15a, respectively.
A connecting member 16 firmly connects the outer mount cylin-der 10 and the outer stopper cylinder 13 wi-th each other.
A mounting : 3b 1 bracket 17 is firmly secured to the outer mount cylinder 10.
As a mounting means on the side of the power unit 18, there are employed a mounting bolt 19 and a nut 20 for the mounting portion formed of the outer and inner mount cylinders 10, 11, as well as a mounting bolt 21 and a nut 22 for the stopper portion formed of the outer and inner stopper cylinders 13, 14, whereas as a mounting means on the side of the vehicle frame 23, there are employed mounting bolts 24, 25 and nuts (not shown) for the mounting bracket 17. Secured to ~he power unit 18 by means of bolts 18a is a bracket 26 which is formed with a pair of elongated apertures 27 for the stopper mounting bolt 21 and a pair of through holes 28 for the mounting bolt 19 of the mounting portion. A bracke-t 29 welded to the vehicle frame 23 has a pair of hollow cylinders 30 fixedly secured thereto for passage of the bolts 24, 25.
The stopper mounting bolt 21, the nut 22 and the elongated apertures 27 in the bracket 26 adjacent to the power unit conjointly constitute an adjustable connecting means.
Upon installation o~ the powér unit supporting apparatus as illustrated in Figs. 2 and 3, the bracket 17 on the outer mount cylinder 10 is first fixed to the vehlcle frame 23 by means of the mounting bolts 24, 25 to firmly secure the outer mount cylinder 10 and the outer stopper cylinder 13 to the vehicle frame, as shown in Fig. 2. Subsequently, the mounting bolt 19 for the mounting portion is inserted into the through holes 28 in the bracket 26 on the power unit 18 and the inner mount cylinder 11 and then fixed thereto by tightening the nut 20, as a consequence of which the mount insulator 12 is yieldingly deformed due to part of the load of the power uni-t 18.
Thereafter, the inner stopper cylinder 14 with the stopper insulator 15 is fastened to the power unit 18 by use of the stoppRr moun-ting bolt 21 and the nut 22.
Accordingly, in the case of the first embodiment as described, it is possible to mount the power unit 18 on the vehicle frame 23 in a manner such that the stopper insulator 15 228~
--s--1 is not subjected to any load from the power unit 18 and thus is held stationary. As a result, the stopper clearances 13 and 14 between the intermediate stopper insulator 15 and the upper and lower stopper insulators 15a, respectively, can always be held at constant values independent of variations in the weight of the power unit 18 and in the characteristics of the mount insulator 12. Further, in the event that the mount insulator 12 is so fatigued under the influence of heat as to change the preset proper amounts of the stopper clearances 13 and 14, the resultant change in the stopper clearances 13 and 14 can be adjusted or corrected in quite a simple and easy manner by loosening the nut 22 on the stopper mounting bolt 21 and retigh-tening the nut 22 after the bolt 21 has been displaced properly in the elongated apertures 27.
Fig. 4 illustrates a second embodiment of the invention wherein the mount insulator 12 is inclined such that a surface of the mount insulator faces to the adjacent end surface of the power unit 18. With this arrangement, during the period of engine idling operation/ noises confined in the engine room are substantially reduced due to reduction of the spring constant of the mounting insulator 12 in the direction of engine vibrations.
Consequentlv, this embodiment is particularly suitable for the mounting of a power unit for a FF (front-engine and front-wheel-drive) type vehicle the engine of which is situated transverselyO
Fig. 5 illustrates a third embodiment wherein in addition to the fact that the mounting insulator 12 is inclined to face to the adjacent end surface of the power unit 18 as in the case of the second embodiment, the stopper insulators 15,15a are also inclined but in a direction, with respect to the vertical, opposite to the direction in which the adjacent end surface of the power unit 18 is inclined, so that the stopper clearances 13 and 14 provide a minimum displacement of the power unit 18~
Accordingly, thi~; embodiment is preferred in the event that the amplitude of engine vibrations or the maximum displacement of the ~, ., --6~
1 power unit 18 should be minimized.
Thus, it is to be noted that adjustment of the angle of inclination of the mount insulator 12 and/or the stopper insulator 15, as in the cases of the second and third embodiments, provides the advantage that individual tuning is possible to meet the different reguirements of power unit support means. I
Referring to a fourth embodiment as shown in Fig. 6, the stopper portion is of dual structure wherein the addition of an auxiliary cylinder 14' concentrically interposed hetween the inner and outer stopper cylinders 14 and 13 provides, in addition to the aforementioned advantages brought about by the first embodiment, a dynamic damping function for the power unit supporting apparatus by utilizing the auxiliary cylinder 14' as a mass.
Referring to a fifth embodiment as illustrated in Fig. 7, an enlarged, rectangularly shaped hollow body 10' is commonly employed instead of the outer cylinders and a mount insulator 12 and a stopper insulator 15 are disposed in parallel relative to each other to connect the inner mount cylinder and the inner stopper cylinder to the rectangularly shaped hollow body 10', respectively. An upper stopper insulator 15a is secured to the inner surface of the upper side of the common hollow body 10' with an upper stopper clearance 13 formed between the upper stopper insulator 15a and an interrnediate stopper insulator 15 A mount insulator 12 acts as a lower stopper insulator with a lower stopper clearance 14 formed between the mount insulator 12 and the stopper insulator 15. Thus, this embodiment enables reduction in number of the component parts. Although the stopper clearance 13 can be controlled precisely, the stopper clearance ` - 14 may be varied to a certain extent due to variation in the weight of the engine. However, such variation in the stopper clearance 14 would pose no problem if a pair oE such supporting apparatus - are disposed in opposed relation with each other.
Summarizing with one embodiment according to the present 2~
invention, a supporting apparatus for a power unit comprises an inner mount cylinder connected to a power unit, an outer mount cylinder connected to a frame of a vehicle, a resi-lient member for connection between the inner and outer mount cylinders, an outer stopper cylinder secured to the outer mount cylinder, and an inner stopper cylinder secured to the power unit through an adjustable connecting means.
The inner and outer stopper cylinders are connected to each other through a resilient member with the inner stopper cylinder being adapted to be placed into abutting engage-ment with the outer stopper cylinder. The inner stopper cylinder is adaptd to be securely fastened after the outer and inner mount cylinders have been mounted on the power unit and the vehicle frame, respectively. Such an arrange-ment provides an advantage that a stopper clearance between the first and second stopper members can always be main~
tained constant irrespective of variations in the weight oF
the power unit because the second stopper members can be mounted after the resilient member connecting between the first and second supporting members has been yielded under the action of a static load.
Further, in the event that the resilient member is so fatigued as to deviate the stopper clearance from its present value, the stopper clearance can be readily adjusted or corrected properly to the preset value simply by reset-ting the second stopper means so that control of the stopper clearance may be effected by a simple operation in quite an easy manner.
Although in the foregoing, some presently pre-ferred embodiments of the invention have been described with reference to the accompanying drawings, the invention is not limited to these embodiments. For example, in all but the last of the embodiments referred to above, the inner cylin-ders are secured to the power unit and the outer cylinders ~zz~
are secured to the vehicle frame, but the reverse construc-tion may be possible for any of the embodimen-ts in which the inner cylinders are secured to the vehicle Frame and the outer cylinders -to the power unit.
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~ . ; 8 -
Claims (14)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A supporting apparatus for a power unit comprising a supporting means comprising a first support-ing member adapted to be connected to a power unit, a second supporting member adapted to be connected to the body of a vehicle and a resilient member for connection between said first and second supporting members to resiliently support the power unit on the vehicle body, a stopper means compri-sing a first stopper member adapted to be connected to the body of the vehicle and a second stopper member adapted to be connected to the power unit, said first and second stop-per members adapted to come into abutting engagement with each other for limiting the movement of the power unit relative to the vehicle body to within a prescribed amount, and connecting means for connecting said first stopper member to said body of the vehicle and said second stopper member to said power unit, the connecting position of at least one of the stopper members being adjustable to main-tain a predetermined distance between the stopper members so as to fasten securely said first or second stopper member after said first and second supporting members have been mounted on said power unit and said body, respectively.
2. The supporting apparatus of claim 1, wherein said first and second stopper members are connected to each other through a second resilient member.
3. The supporting apparatus of claim 1, wherein said first supporting member is an inner mount cylinder fixedly connected to said power unit through a first bracket means and said second supporting member is an outer mount cylinder fixedly connected to said body through a second bracket means.
4. The supporting apparatus of claim 3, wherein said first stopper member is an outer stopper cylinder secured to said body through said outer mount cylinder and said second stopper member is an inner stopper cylinder connected to said power unit through said adjustable con-necting means provided in said first bracket means.
5. The supporting apparatus of claim 4, wherein said adjustable connecting means has an elongated aperture to receive said second stopper member, thereby accommodat-ing the relative movement between said first and second supporting members.
6. The supporting apparatus of claim 1, wherein said first supporting member is an outer mount cylinder fixedly connected to said power unit through a first bracket means and said second supporting member is an inner mount cylinder fixedly connected to said body through a second bracket means.
7. The supporting apparatus of claim 6, wherein said first stopper member is an inner stopper cylinder con-nected to said body through said adjustable connecting means provided in said second bracket means and said second stop-per member is an outer mount cylinder secured to said power unit through said outer mount cylinder.
8. The supporting apparatus of claim 7, wherein said adjustable connecting means has an elongated aperture to receive said first stopper member, thereby accommodat-ing the relative movement between said first and second supporting members.
9. The supporting apparatus of claim 1, wherein a surface of said resilient member is inclined to face to the adjacent end surface of said power unit.
10. The supporting apparatus of claim 2, wherein said second resilient member is inclined in a direction opposite to the direction in which the adjacent end surface of the power unit is inclined.
11. The supporting apparatus of claim 4, wherein said inner stopper cylinder is of dual structure.
12. The supporting apparatus of claim 1, wherein said second supporting member and said first stopper members are combined to form a rectangularly shaped common hollow body and said first supporting member and said second stop-per members are connected to said common hollow body through a resilient member, respectively.
13. The supporting apparatus of claim 9, wherein said first and second stopper members are connected to each other through a second resilient member which is inclined in a direction opposite to the direction in which the adjacent end surface of the power unit is inclined.
14. The supporting apparatus of claim 1, wherein said first supporting member is an inner mount cylinder connected to a power unit, said second supporting member is an outer mount cylinder connected to a frame of a vehicle, said inner and outer mount cylinders connected by a resilient member, wherein said first stopper member is an outer stopper cylinder secured to said outer mount cylinder, said second stopper member is an inner stopper cylinder secured to said power unit through an adjustable connecting means, said inner and outer stopper cylinders being connec-ted to each other through a resilient member, said inner stopper cylinder being adapted to be placed into abutting engagement with said outer stopper cylinder, and said inner stopper cylinder being adapted to be securely fastened after said outer and inner mount cylinders have been mounted on said vehicle frame and said power unit, respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19373082A JPS5983850A (en) | 1982-11-04 | 1982-11-04 | Supporting device for power unit |
| JP193730/1982 | 1982-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1202289A true CA1202289A (en) | 1986-03-25 |
Family
ID=16312848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000440379A Expired CA1202289A (en) | 1982-11-04 | 1983-11-03 | Supporting apparatus for power unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5983850A (en) |
| CA (1) | CA1202289A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314117A (en) * | 2016-08-29 | 2017-01-11 | 芜湖银星汽车零部件有限公司 | Rear suspension bracket |
| US9682613B2 (en) | 2013-10-24 | 2017-06-20 | Toyota Jidosha Kabushiki Kaisha | Vehicle including engine mount units |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5562821B2 (en) * | 2010-12-13 | 2014-07-30 | 倉敷化工株式会社 | Vibration isolator |
-
1982
- 1982-11-04 JP JP19373082A patent/JPS5983850A/en active Pending
-
1983
- 1983-11-03 CA CA000440379A patent/CA1202289A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9682613B2 (en) | 2013-10-24 | 2017-06-20 | Toyota Jidosha Kabushiki Kaisha | Vehicle including engine mount units |
| CN106314117A (en) * | 2016-08-29 | 2017-01-11 | 芜湖银星汽车零部件有限公司 | Rear suspension bracket |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5983850A (en) | 1984-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |