CA1042928A - Dual spring support - Google Patents
Dual spring supportInfo
- Publication number
- CA1042928A CA1042928A CA277,927A CA277927A CA1042928A CA 1042928 A CA1042928 A CA 1042928A CA 277927 A CA277927 A CA 277927A CA 1042928 A CA1042928 A CA 1042928A
- Authority
- CA
- Canada
- Prior art keywords
- members
- extending
- abutment
- spaced
- tubular connector
- 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
Landscapes
- Vibration Dampers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A dual spring and shock absorber support assembly compris-es two spaced-apart members which are movable toward and away from each other, a tubular connector being affixed to one of the mem-bers and extending toward and spaced from the other member, an enclosure affixed to the latter and extending toward and spaced from the former and aligned with and surrounding an extending end of the tubular connector and having two parallel and spaced-apart abutment surfaces. An abutment piece affixed to and surrounding the extending end of the tubular connector is located within the enclosure half way between the abutment surfaces and extending parallel to the abutment surfaces, and is spaced from the enclosure to be freely movable therewithin, and two compression coil springs of equal strength are co-axially disposed in end-to-end relation respectively between the abutment piece and the abutment surfaces and co-axial with the longitudinal axis of the tubular connector for dampening the movements of the members. A shack absorber ex-tending in the tubular connector and co-axial with the two springs is operatively connected at its respective ends with the two mem-bers for dampening shocks imposed upon the two members.
A dual spring and shock absorber support assembly compris-es two spaced-apart members which are movable toward and away from each other, a tubular connector being affixed to one of the mem-bers and extending toward and spaced from the other member, an enclosure affixed to the latter and extending toward and spaced from the former and aligned with and surrounding an extending end of the tubular connector and having two parallel and spaced-apart abutment surfaces. An abutment piece affixed to and surrounding the extending end of the tubular connector is located within the enclosure half way between the abutment surfaces and extending parallel to the abutment surfaces, and is spaced from the enclosure to be freely movable therewithin, and two compression coil springs of equal strength are co-axially disposed in end-to-end relation respectively between the abutment piece and the abutment surfaces and co-axial with the longitudinal axis of the tubular connector for dampening the movements of the members. A shack absorber ex-tending in the tubular connector and co-axial with the two springs is operatively connected at its respective ends with the two mem-bers for dampening shocks imposed upon the two members.
Description
1~)9LZ9~3 This invention relates to a dual spring support, and, more particularly, it relates to a spring support for a vehicle, such as a tractor cab, for cushion supporting a cab on a vehicle chassis.
The prior art is already aware of a variety of arrangements for cushion, resilient, and otherwise spring~supporting vehicle cabs or bodies, railroad and truck beds, and the like. The prior art arrangements are also known to have a combination of hydrauli-cally-operative shock absorbers with compression springs, and such are commonly used on present~day automobiles, for instance.
That is, the prior art utili~es resilient members, particularly compression springs, in conjunction with conventional shock ab-sorbers, for isolatlng or suspending the vehicle operator from the remainder of the vehicle, and the reasons for such include dampening vibration and noise and avoiding fatigue and for safety reasons. For instance, prior art systems utilizing only singular-ly disposed compression springs are found in U.S. Patents 1,888,989 and 3,067,437 and 3,420,568 and 3,732,9~1. Also, U.S. Patent 3,285,652 shows a spring suspension system for an operator's sleep-ing accommodations carried in a vehicle. Finally, U.S. Patent3,357,717 shows an arrangement of a spring mounting for an opera-tor's seat in a vehicle, such as a tractor, and it is also noted that this patent shows the use of a combination of a compression spring and a shock absorber disposed co-axially with the compres-sion spring.
In the aforesaid, it is a common occurrence and arrange-ment to have the cushion or spring support effective so that it will cushion basically in one direction such that the cushioning force is increased in that one direction, but, when an externally-applied impact or force is effective in the other direction, then ~ ~, .
~4Z9;~8 the suspension means is not fully capable of dampening or resist-ing that force.
It is an object of the present invention to obviate or mitigate the above disadvantages.
According to the present invention there is provided, a dual spring and shock absorber support assembly mountable between a pair of relatively moveable members comprising a housing having two parallel and spaced apart abutment surfaces~ an abutment piece located within said housing between the abutment surfaces and ex-tending parallel to the abutment surfaces the abutment piece be-ing disposed for movement generally along the longitudinal axis of the housing, two compression coil springs coaxially disposed in end-to-end relation in contact with and respectively extending between the abutment piece and respective abutment surfaces to be coaxial with the longitudinal axis of the housing for opposing re-lative movement between the surfaces and the abutment piece in both directions and a shock absorber coaxial with the two springs and operatively connectable at respective ends with the two mem-bers for dampening the transmission of shocks between the two members.
One of the springs may have an end extending within and surrounded by one end of the other of the springs, the spring ends abutting opposite sides of the abutment piece.
Preferably, the springs are of equal strengths and the abutment piece is located halfway between the abutment surfaces.
Also an assembly may further comprise a tubular connector being affixed to one of the two members and extending toward and spaced from the other of the members, the enclosure being aligned with and surrounding an extending end of the tubular connector, the abutment piece being affixed to and surrounding the extending
The prior art is already aware of a variety of arrangements for cushion, resilient, and otherwise spring~supporting vehicle cabs or bodies, railroad and truck beds, and the like. The prior art arrangements are also known to have a combination of hydrauli-cally-operative shock absorbers with compression springs, and such are commonly used on present~day automobiles, for instance.
That is, the prior art utili~es resilient members, particularly compression springs, in conjunction with conventional shock ab-sorbers, for isolatlng or suspending the vehicle operator from the remainder of the vehicle, and the reasons for such include dampening vibration and noise and avoiding fatigue and for safety reasons. For instance, prior art systems utilizing only singular-ly disposed compression springs are found in U.S. Patents 1,888,989 and 3,067,437 and 3,420,568 and 3,732,9~1. Also, U.S. Patent 3,285,652 shows a spring suspension system for an operator's sleep-ing accommodations carried in a vehicle. Finally, U.S. Patent3,357,717 shows an arrangement of a spring mounting for an opera-tor's seat in a vehicle, such as a tractor, and it is also noted that this patent shows the use of a combination of a compression spring and a shock absorber disposed co-axially with the compres-sion spring.
In the aforesaid, it is a common occurrence and arrange-ment to have the cushion or spring support effective so that it will cushion basically in one direction such that the cushioning force is increased in that one direction, but, when an externally-applied impact or force is effective in the other direction, then ~ ~, .
~4Z9;~8 the suspension means is not fully capable of dampening or resist-ing that force.
It is an object of the present invention to obviate or mitigate the above disadvantages.
According to the present invention there is provided, a dual spring and shock absorber support assembly mountable between a pair of relatively moveable members comprising a housing having two parallel and spaced apart abutment surfaces~ an abutment piece located within said housing between the abutment surfaces and ex-tending parallel to the abutment surfaces the abutment piece be-ing disposed for movement generally along the longitudinal axis of the housing, two compression coil springs coaxially disposed in end-to-end relation in contact with and respectively extending between the abutment piece and respective abutment surfaces to be coaxial with the longitudinal axis of the housing for opposing re-lative movement between the surfaces and the abutment piece in both directions and a shock absorber coaxial with the two springs and operatively connectable at respective ends with the two mem-bers for dampening the transmission of shocks between the two members.
One of the springs may have an end extending within and surrounded by one end of the other of the springs, the spring ends abutting opposite sides of the abutment piece.
Preferably, the springs are of equal strengths and the abutment piece is located halfway between the abutment surfaces.
Also an assembly may further comprise a tubular connector being affixed to one of the two members and extending toward and spaced from the other of the members, the enclosure being aligned with and surrounding an extending end of the tubular connector, the abutment piece being affixed to and surrounding the extending
- 2 -. ,.,".~ ~
~04Z~
end and the shock absorber extending in the tubular connect~r.
According also to the present invention there is provid-ed a dual spring and shock absorber support assembly, comprising two spaced-apart mem~ers which are moveable toward and away from : each other, a tubular connector being affixed to one of the two members and extending toward and spaced from the other of the mem-: bers, an enclosure affixed to the other of the members and extend-ing toward and spaced from the one of the members and aligned with ; and surrounding and extending end of the tubular connector and hav-ing two parallel and spaced-apart abutment surfaces, an abutment piece affixed to and surrounding the extending end of the tubular ; connector and located within the enclosure halfway between the ~ abutment surfaces and extending parallel to the abutment surfaces, and being spaced from the enclosure to be freely moveable there-within, two compression coil springs of equal strength co-axially disposed in end-~to-end relation respectively between the abutment piece and the abutment surfaces and co-axial with the longitudin-al axis of the tubular connector for dampening the movement of the members in both the toward and away directions, and a shock absor-ber extending in the tubular connector and co-axial with the two springs and being operatively connected at its respective ends with the two members for dampening shocks imposed upon the two members.
An embodiment of the invention is illustrated with re-ference to the accompanying drawing, in which:-Figure 1 is a vertical sectional view through a dualspring and shoclc absorber support assembly.
The drawing shows two spaced-apart members 10 and 11, respectively, the floor of a vehicle cab and the vehicle frame of a tractor or the like. ~ spring or cushioned support, gener-.;, ~42~
ally designated 12~ is disposed and operative between the members10, 11. The assembly 12 is shown to generally include two com~
pression springs 13 and 14, an enclosure 16, a tubular connector 15 and a shock absorber 20.
The springs 13 and 14 are conical springs which are co-axially disposed, as shown. They are contained within an enclo-sure 16 which consists of a lower en~ircling piece 17 and an up-- per dome or encircling piece 18. The two pieces have flanges 19 and are secured together by boits 21. The container 16 actually presents an upper abutment surface 22 and a lower abutment sur-face 23 for the two springs 13 and 14, as shown. Thus, the upper spring 13 has its upper end 24 in abutting contact with the sur-face 22, and the lower spring 14 has its lower end 26 in abutting contact with the surface 23, so that the two spring ends 24 and 26 are retained with a fixed spacing or distance therebetween.
The other respective spring ends 27 and 28 are in abutment with a plate-shaped abutment piece 29, and thus the spring ends 27 and 28 are in constant contact with the upper and lower surfaces, re-spectively, of the abutment piece 29~ Still further, it will be noticed that the springs 13 and 14 are slightly nested together, to the extent that the lower spring upper end 28 is disposed with-in the circular confines of the lower end 27 of the upper spring 13. Upon further compression of the springs the spring ends 27 can respectively move to the dot-dash positions indicated. There-fore the spring ends 24 and 26 do not move relative to each other, but the adjacent spring ends 27 and 28 do move, such as to the dot-dash positions described and shown.
The tubular piece 15 extends co-axial with the springs 13 ; and 14 and is connected to the upper member 10, such as by the weldin~ designated 31. The lower end of the tubular piece 15 is 9;38 connected to the plate 29, such as b~ the welding 32. Thus the plate 29 is fixedly spaced from the one member 10. The enclosure 15 has an opening 33 encircling the tubular member 15, with a cir-cular collar 34 defining the opening 33 and interposed between the tubular member 15 and the upper portion 18 of the enclosure 16. Thus, the tubular member 15 can slide up and down in the col~
lar 34 and thus relative to the enclosure 16. This occurs of course when the members 10 and 11 move toward and away from each other in the manner in which they are capable of doing, by virtue of the spring suspension shown and being described herein. Also, the bottom 36 of the enclosure 16 is affixed to the lower member 11, such as by the welding 37.
Accordingly, it will be seen and understood that the springs 13 and 14 are confined in the member 16 which is assembl-ed and positioned, by virtue of the plurality of bolts 21 extend-ing therearound. The arrangement is such that the springs 13 and 14 are preloaded by being compressed in the member 16 through ` tightening of the bolts 21 which are elongate, as shown. With this arrangement, the springs 13 and 14 oppose each other, and the force is such that they increase the force between the members lO and 11, in both directions of movements of the members 10 and 11 toward and away from each other, as will be seen and understood upon cGntemplation of the arrangement shown in Fig. 1.
That is, considering an upward force on the vehicle frame member or chassis 11, such as by encountering a bump in the road, the member 11 will tend to rise or move toward the member lO, and the spring 14 will resist that force by virtue of the compressive characteristic of the spring 14. In that action, the container 16 will also move toward the member 10, and thus the spring 13 will extend somewhat since its abutment surface 22 will move upwardly.
:
~)4Z928 The amount of movement of the member ll toward the member lO will determine the total force in the spring 14 to resistthat movement, and that resisting force will be in proportion to the movement, as desired to effect the desired dampening of the impact. Converse-ly, if the member ll were to move downwardly, ~uch as by having the vehicle encounter a hole in the road, or in any other action, including rebound, which would cause the members 10 and ll to move away from each other, then the enclosure 16 and the piece 29 would force inwardly on the spring 13 to.compress the latter and to have the spring 13 resist the separating force being described.
~ccordingly, movement of the members lO and ll either toward or away from each other results in a variable and opposing force, in accordance with the amount of impact or force acting on the members lO and 11. This force acts in both directions of move-ment of the members 10 and ll.
Further, it will be seen that the conventional type of shock absorber 20 is connected with the member 15, such as through the affixed plate 38 and the shock a~sorber threaded end 39 and through the affi~ed angled plate 41 and the shock absorber bolt 42. The plate 41 and the enclosure 16 may be held to the frame 11 by a bolt 43. Of course it will be seen that the shock absor-ber 20 is co-axial with the tubular member 15 and with the two springs 13 and 14, and the shock absorber is.available for serv-in~ the usual purpose of absorbing immediate and violent shocks commonly encountered in the operation of a vehicle.
Further, the springs 13 and 14 are preferably of equal strength, and, as mentioned, they may be preloaded and are of variable sprin~ characteristics to increase resistance in accor-dance with the overall length of each spring. Also, the abutment 22 is shown located at the mid-plane of the enclosure, that is, halfway between the abutment surfaces 22.
. . .
,
~04Z~
end and the shock absorber extending in the tubular connect~r.
According also to the present invention there is provid-ed a dual spring and shock absorber support assembly, comprising two spaced-apart mem~ers which are moveable toward and away from : each other, a tubular connector being affixed to one of the two members and extending toward and spaced from the other of the mem-: bers, an enclosure affixed to the other of the members and extend-ing toward and spaced from the one of the members and aligned with ; and surrounding and extending end of the tubular connector and hav-ing two parallel and spaced-apart abutment surfaces, an abutment piece affixed to and surrounding the extending end of the tubular ; connector and located within the enclosure halfway between the ~ abutment surfaces and extending parallel to the abutment surfaces, and being spaced from the enclosure to be freely moveable there-within, two compression coil springs of equal strength co-axially disposed in end-~to-end relation respectively between the abutment piece and the abutment surfaces and co-axial with the longitudin-al axis of the tubular connector for dampening the movement of the members in both the toward and away directions, and a shock absor-ber extending in the tubular connector and co-axial with the two springs and being operatively connected at its respective ends with the two members for dampening shocks imposed upon the two members.
An embodiment of the invention is illustrated with re-ference to the accompanying drawing, in which:-Figure 1 is a vertical sectional view through a dualspring and shoclc absorber support assembly.
The drawing shows two spaced-apart members 10 and 11, respectively, the floor of a vehicle cab and the vehicle frame of a tractor or the like. ~ spring or cushioned support, gener-.;, ~42~
ally designated 12~ is disposed and operative between the members10, 11. The assembly 12 is shown to generally include two com~
pression springs 13 and 14, an enclosure 16, a tubular connector 15 and a shock absorber 20.
The springs 13 and 14 are conical springs which are co-axially disposed, as shown. They are contained within an enclo-sure 16 which consists of a lower en~ircling piece 17 and an up-- per dome or encircling piece 18. The two pieces have flanges 19 and are secured together by boits 21. The container 16 actually presents an upper abutment surface 22 and a lower abutment sur-face 23 for the two springs 13 and 14, as shown. Thus, the upper spring 13 has its upper end 24 in abutting contact with the sur-face 22, and the lower spring 14 has its lower end 26 in abutting contact with the surface 23, so that the two spring ends 24 and 26 are retained with a fixed spacing or distance therebetween.
The other respective spring ends 27 and 28 are in abutment with a plate-shaped abutment piece 29, and thus the spring ends 27 and 28 are in constant contact with the upper and lower surfaces, re-spectively, of the abutment piece 29~ Still further, it will be noticed that the springs 13 and 14 are slightly nested together, to the extent that the lower spring upper end 28 is disposed with-in the circular confines of the lower end 27 of the upper spring 13. Upon further compression of the springs the spring ends 27 can respectively move to the dot-dash positions indicated. There-fore the spring ends 24 and 26 do not move relative to each other, but the adjacent spring ends 27 and 28 do move, such as to the dot-dash positions described and shown.
The tubular piece 15 extends co-axial with the springs 13 ; and 14 and is connected to the upper member 10, such as by the weldin~ designated 31. The lower end of the tubular piece 15 is 9;38 connected to the plate 29, such as b~ the welding 32. Thus the plate 29 is fixedly spaced from the one member 10. The enclosure 15 has an opening 33 encircling the tubular member 15, with a cir-cular collar 34 defining the opening 33 and interposed between the tubular member 15 and the upper portion 18 of the enclosure 16. Thus, the tubular member 15 can slide up and down in the col~
lar 34 and thus relative to the enclosure 16. This occurs of course when the members 10 and 11 move toward and away from each other in the manner in which they are capable of doing, by virtue of the spring suspension shown and being described herein. Also, the bottom 36 of the enclosure 16 is affixed to the lower member 11, such as by the welding 37.
Accordingly, it will be seen and understood that the springs 13 and 14 are confined in the member 16 which is assembl-ed and positioned, by virtue of the plurality of bolts 21 extend-ing therearound. The arrangement is such that the springs 13 and 14 are preloaded by being compressed in the member 16 through ` tightening of the bolts 21 which are elongate, as shown. With this arrangement, the springs 13 and 14 oppose each other, and the force is such that they increase the force between the members lO and 11, in both directions of movements of the members 10 and 11 toward and away from each other, as will be seen and understood upon cGntemplation of the arrangement shown in Fig. 1.
That is, considering an upward force on the vehicle frame member or chassis 11, such as by encountering a bump in the road, the member 11 will tend to rise or move toward the member lO, and the spring 14 will resist that force by virtue of the compressive characteristic of the spring 14. In that action, the container 16 will also move toward the member 10, and thus the spring 13 will extend somewhat since its abutment surface 22 will move upwardly.
:
~)4Z928 The amount of movement of the member ll toward the member lO will determine the total force in the spring 14 to resistthat movement, and that resisting force will be in proportion to the movement, as desired to effect the desired dampening of the impact. Converse-ly, if the member ll were to move downwardly, ~uch as by having the vehicle encounter a hole in the road, or in any other action, including rebound, which would cause the members 10 and ll to move away from each other, then the enclosure 16 and the piece 29 would force inwardly on the spring 13 to.compress the latter and to have the spring 13 resist the separating force being described.
~ccordingly, movement of the members lO and ll either toward or away from each other results in a variable and opposing force, in accordance with the amount of impact or force acting on the members lO and 11. This force acts in both directions of move-ment of the members 10 and ll.
Further, it will be seen that the conventional type of shock absorber 20 is connected with the member 15, such as through the affixed plate 38 and the shock a~sorber threaded end 39 and through the affi~ed angled plate 41 and the shock absorber bolt 42. The plate 41 and the enclosure 16 may be held to the frame 11 by a bolt 43. Of course it will be seen that the shock absor-ber 20 is co-axial with the tubular member 15 and with the two springs 13 and 14, and the shock absorber is.available for serv-in~ the usual purpose of absorbing immediate and violent shocks commonly encountered in the operation of a vehicle.
Further, the springs 13 and 14 are preferably of equal strength, and, as mentioned, they may be preloaded and are of variable sprin~ characteristics to increase resistance in accor-dance with the overall length of each spring. Also, the abutment 22 is shown located at the mid-plane of the enclosure, that is, halfway between the abutment surfaces 22.
. . .
,
Claims (5)
1. A dual spring and shock absorber support assembly mount-able between a pair of relatively moveable members comprising a housing having two parallel and spaced apart abutment surfaces, an abutment piece located within said housing between said abut-ment surfaces and extending parallel to said abutment surfaces said abutment piece being disposed for movement generally along the longitudinal axis of said housing, two compression coil springs coaxially disposed in end-to-end relation in contact with and respectively extending between said abutment piece and res-pective abutment surfaces to be coaxial with the longitudinal axis of said housing for opposing relative movement between said surfaces and said abutment piece in both directions and a shock absorber coaxial with said two springs and operatively connect-able at respective ends with said two members for dampening the transmission of shocks between said two members.
2. A dual spring and shock absorber support assembly as claimed in claim 1, wherein one of said springs has an end extend-ing within and surrounded by one end of the other of said springs said spring ends abutting opposite sides of said abutment piece.
3. A dual spring and shack absorber support assembly as claimed in claim 1, wherein said springs are of equal strength and said abutment piece is located halfway between said abutment surfaces.
4. A dual spring and shock absorber support assembly as claimed in claim 1, 2 or 3 further comprising a tubular connec-tor affixable to one of said two members and extending toward and spaced from the other of said members, said housing being aligned with and surrounding an extending end of said tubular connector, said abutment piece being affixed to and surrounding said extending end and said shock absorber extending in said tubular connector.
5. A dual spring and shock absorber support assembly, com-prising two spaced-apart members which are movable toward and away from each other, a tubular connector being affixed to one of said two members and extending toward and spaced from the other of said members, an enclosure affixed to said other of said mem-bers and extending toward and spaced from said one of said mem-bers and aligned with and surrounding and extending end of said tubular connector and having two parallel and spaced-apart abut-ment surfaces, an abutment piece affixed to and surrounding the extending end of said tubular connector and located within said enclosure halfway between said abutment surfaces and extending parallel to said abutment surfaces, and being spaced from said enclosure to be freely movable therewithin, two compression coil springs of equal strength coaxially disposed in end-to-end relation res-pectively between and in contact with said abutment piece and said abutment surfaces and coaxial with the longitudinal axis of said tubular connector for dampening the movement of said members in both the toward and away directions, and a shock absorber extending in said tubular connector and coaxial with said two springs and being op-eratively connected at its respective ends with said two members for dampening shocks imposed upon said two members.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71351976A | 1976-08-11 | 1976-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1042928A true CA1042928A (en) | 1978-11-21 |
Family
ID=24866463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA277,927A Expired CA1042928A (en) | 1976-08-11 | 1977-05-09 | Dual spring support |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1042928A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027902A (en) * | 2021-03-26 | 2021-06-25 | 北京机械设备研究所 | Flexible hinge mechanism and load transportation equipment comprising same |
-
1977
- 1977-05-09 CA CA277,927A patent/CA1042928A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027902A (en) * | 2021-03-26 | 2021-06-25 | 北京机械设备研究所 | Flexible hinge mechanism and load transportation equipment comprising same |
| CN113027902B (en) * | 2021-03-26 | 2022-05-17 | 北京机械设备研究所 | Flexible hinge mechanism and load transportation equipment comprising same |
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