Source: https://russianpatents.com/patent/241/2419003.html
Timestamp: 2020-07-06 07:52:37
Document Index: 507970418

Matched Legal Cases: ['art 6', 'art 6', 'art 10', 'art 11', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6']

Variable-rigidity spring support
The present invention relates to the field of automotive suspensions and, in particular, suspensions of variable rigidity.
Indeed, this type of suspension is becoming more common to provide superior cars.
The most common solution to provide variable stiffness are performing spring site suspension in which the spring is the spring coils with variable cross-section, and the spring rests on the element of elastomeric material stiffness is minimal, while the coils of smaller diameter springs do not come in contact with the elastomeric support element, then increases with the length of a coil included in the contact with the supporting member. To ensure good retention of the spring, it can be mounted on an elastomeric bearing element; this solution also provides aggressive contact with the spring.
However, the execution of a spring of variable cross-section is relatively expensive, and have proposed other solutions to achieve variable stiffness of the node, in particular the use of the support element variable stiffness that allows you to use spring with coils of constant cross-section (see, for example, document EP 0924445).
The first embodiment of the support element variable stiffness comp is it for example, in the implementation of the set of teeth on the surface of the support element of elastomeric material, which contact with the spring at rest is the stiffness in compression is minimal; in the phase of compression of the prongs are deformed, and the stiffness increases. However, this solution is not quite satisfactory: in particular, it is not sufficiently reliable on the road covered with gravel, because the gravel gets stuck between your teeth and can damage the spring. In addition, it does not meet the requirements of a rapid increase in the hardness and durability is limited due to alternating stresses acting on the elastomeric material forming the support element.
The second embodiment of the support element variable stiffness provides for the installation of rigid inserts, for example, from aluminum or plastic inside the elastomeric support element. As the surface which is in contact with the spring, the insert may contain teeth, which allows to obtain a higher maximum rigidity and increase durability. However, the possibility of degradation over time due to creep of elastomeric material of the support element.
The present invention is intended to offer a basic element of the suspension springs with variable stiffness,which does not have the above disadvantages and is simple and inexpensive to manufacture.
This problem is solved by creating a support element for the suspension springs of the vehicle, comprising a main part and an essentially rigid or semi-rigid insert, characterized in that the spring suspension is based directly on essentially rigid or semi-rigid insert.
It is preferable that the insert has the function of centering springs on the support element in accordance with the present invention.
In the first embodiment, the main portion of the support element contains essentially conical cap, containing a cavity near its axis of rotation, from which essentially coaxial completed the second tapered portion of smaller diameter than the cap also contains a cavity near its axis of rotation, while the invention has one or more characteristic features:
the main part contains the sealing edge diameter, essentially exceeding the diameter of its base,
- seal lip is made on the base of the main part opposite to the second cone part,
the insert has a shape substantially similar to a shape of the main part, and the Assembly is essentially closes her second tapered part,
- after landing inserts on the base of the main part of the support element in accordance with the present invention the base of the insert forms on usausausa sealing rim designed to increase the durability of the support element,
opposite the base of the insert, the second tapered portion contains near its portion of smaller diameter edge diameter greater than the smaller diameter of the second tapered part,
- spring is installed between the upper side of the base insert and the bottom side edges, made on the second tapered portion of the insert, and it is held in its socket by fastening using the appropriate reeds,
the diameter of the descending sealing rim of the insert is essentially equal to the diameter of the sealing edge is made at the base of the cap main portion of the support element in accordance with the present invention,
the main part is made of an elastomeric material, such as rubber,
- insert made of hard plastic material, for example polyurethane.
In the second preferred embodiment, the insert is rigid, does not contain a lowering of the sealing side and on the underside of its base contains a set of covered ribs, designed to engage with a complementary set covering ribs made on the upper side of the cap main portion of the support element in accordance with the present invention.
Other features and advantages which subramania are explained in the following description with reference to the accompanying drawings, where presented:
figure 1 is a General schematic perspective view of the suspension springs and the main surrounding elements;
figure 2 is a section along the plane of symmetry of the first variant implementation of the support element in accordance with the present invention;
figa and 3B is a section along the plane of symmetry of the first variant of implementation of the basic components of the support element in accordance with the present invention;
4 is a curve characterizing bearing suspension springs for the known suspension device according to the first variant implementation of the invention;
5 is a section along the plane of symmetry of the support element according to the second preferred variant implementation of the present invention;
figa and 6B is a section along the plane of symmetry of the main components of the support element according to the second preferred variant implementation of the present invention.
Spring node pendants, known from the prior art and schematically shown in figure 1, contains a suspension spring 1, each of the ends of which is in contact respectively with the lower support element 2 and the upper supporting member 3, while the bottom 2 and top 3 of the supporting elements are connected by using appropriate means (not shown in figure 1), respectively, with the chassis 4 and the body 5 of the vehicle. According to known the major variants of execution of each of the supporting elements 2 and 3 includes a part perform the function of centering and providing a fixed and reproducible positioning of the spring 1 of the suspension relative to the chassis 4 and the body 5. According to a variant of execution of the suspension of the variable stiffness, also known from the prior art, if the suspension spring 1 is a spring with coils of constant cross section, the upper support 3, connected with the body 5 of the vehicle has a variable stiffness.
The upper supporting element 3 in accordance with the present invention contains the main part 6 and a rigid or semi-rigid insert 7, which is in direct contact spring 1 suspension after installation.
Thus, as shown in figure 2-5, the main part 6 contains the base 8 and the extension 9, essentially truncated conical and coaxial with the axis of rotation Z, and the maximum diameter of the extension 9 is essentially less than the smallest diameter of the cap 8. When a node is suspension mounted on the vehicle, the lower part 10 of larger diameter of the cap 8 comes in contact with the body 5, and the extension 9 is in this case from its larger diameter to its smaller diameter, starting from the upper part 11 of the cap 8. To reduce weight and simplify manufacture, the cap 8 and the extension 9 perform axial cavity. Preferably the main portion 6 made of a relatively hard plasticheskoj the material, such as polyurethane.
In the first embodiment of the present invention, in particular, it is shown in figure 2, 3A and 3B, the diameter of the bottom side 10 of the cap 8 is essentially an enlarged and forms the edge 12 or sealing edge, the role of which will be clarified below.
Under this option, perform the insert 7 of the support element 3 has a shape substantially similar to a shape of the main part 6 of the support element 3. Thus, the insert 7 comprises a base 13 and extension 14. The base 13 and extension 14 are essentially truncated cone and coaxial, and the extension 14 is made from its larger diameter to its smaller diameter, starting from the top side 15 of smaller diameter of the base 13. Box 7 also has an axial cavity, the internal shape and dimensions of which correspond to the outer shape and size of the extension 9 of the main part 6. The largest diameter of the base 13 of the insert 7 is essentially greater than the smallest diameter of the cap 8 of the main part 6 of the support element 3 in accordance with the present invention, and the lower side of the base 13 also includes a ledge 16, shapes and sizes that match the size and shape of the upper part of the cap 8 of the main part 6 of the support element 3. The upper side 16 of a smaller diameter extension 14 of the insert 7 further comprises an edge 18 of larger diameter, the function of which will be explained below.
In this the m embodiment, the insert 7 of the support element 3 in accordance with the present invention are made of a more rigid plastic material, than the material used to perform the main part 6 of the support element in accordance with the present invention.
During the connection of the main part 6 and the insert 7 for the formation of the support element 3 in accordance with the present invention, as shown in figure 2, box 7 installing the ledge 17, made in its lower part, the upper part of the cap 8 of the main part 6. Thus, the insert 7 are put on the main part 6 of the support element 3 in accordance with the present invention, and the bottom side 19 or sealing a side of the base 13 of the insert 7 covers the upper edge of the base 8 of the main part 6. Spring 1 suspension set around the extension 14 of the insert 7 between the upper side of the base 13 and the lower side edge 18, and the extension 14 has the function of centering springs 1 and ensures reproducible positioning and flange 18 acts as a stop, preventing the release of the spring 1 of its educated, so the nest.
This design allows significantly limit or even avoid gravel between the suspension spring 1 and its bearing, which reduces the possibility of damage to gravel springs 1.
In addition, when the spring applies a compressing force, the presence and configuration of the sealing edge 19 allows you to change the stiffness of a support, in particular, to nasishini is, that is, at full compression of the spring, as shown in figure 4. The graph rigidity of the spring seat 1 suspension depending on its deformation dashed curve shows the case in which the supporting element 3 does not contain the sealing edge 19 described in the first embodiment, and the solid curve shows the case when the spring 1 is based on the element containing the sealing edge 19 according to the first variant implementation of the invention. The graph clearly shows that in the last mentioned case, the increase of the hardness is faster.
In addition, the presence of such a sealing edge 19 can improve the wear resistance of the material forming the soft part of the curve characterizing the support (that is, in this case, the material of the main part 6 of the support element 3 in accordance with the present invention).
The sealing edge 12 of the lower side 10 of the main part 6 allows you to eliminate noise problems at the sharp contact between the sealing edge 19 with the body 5 of the vehicle. Preferably, but not limited to this sealing edge 12 are made of an elastomeric material such as rubber: however, if the main part 6 is made of a different material, different from the elastomer (for example, but not limited to, if it is made of polyurethane), sealing edge 12 preference is sustained fashion are in the form of a washer of elastomeric material (for example, of rubber) of appropriate dimensions, installed between the bottom side 10 of the base 8 of the main part 6 and the body 5 of the vehicle.
It should be noted that, in order to vary the diameters of the coils of the spring 1 suspension, the insert 7 can be made of double material, one component of which is soft and the other hard.
Figure 5, 6A and 6B shows the second embodiment of the present invention, in which the insert 7 of the support element 3 performs semi-rigid and preferably, but not limited to elastomeric material such as rubber. In this embodiment, the main portion 6 of the support element 3 shown in figa similar to the main part 6 described in the first embodiment, but the lower side 10 of its base 8 does not contain a sealing edge 12. In addition, on the bottom side 11 of its base is made essentially radial and evenly distributed covering the rib 20: the function of the ribs 20 will be explained below. In alternative versions of the rib 20 is replaced by one or more concentric annular grooves corresponding form.
In this embodiment, as shown in figv, the insert 7 comprises a base 21, is essentially a truncated cone, starting from the side of smaller diameter, which is coaxially performed essentially truncated stake is the amount of elongation 22, the upper part of which contains essentially hemispherical segment 23. The largest diameter of the base 21 is essentially equal to the diameter of the upper side 11 of the base 8 of the main part 6 so that after the connection of the main part 6 and the insert 7 for the formation of the support element 3 in accordance with the present invention, the base 21 of the insert 7 does not cover the upper side of the cap 8 of the main part 6 and comes into contact with him in his path.
As in the case of the previously described first variant implementation of the invention, over its entire height rate 7 includes an axial cavity, the shape and size of which corresponds to the size and shape of the outer surface of the extension 9 of the main part 6.
In addition, on the periphery of essentially truncated conical extension 22 is made essentially cylindrical annular groove 24: dimensions of annular groove 24 is determined depending on the cross-section of a coil spring 1 suspension. In this case, the installation and mounting of the spring 1 of the suspension is carried out by clamping the annular groove 24, which allows us to vary the cross section turns to spring 1 suspension. In addition, this solution can significantly reduce friction between the spring and the insert 7 of the support element 3 and to reduce abrasion from contact with the spring 1.
In addition, the underside of the base 21 of the insert 7 contains the ledge 25, in which the set), the Wu radial covered ribs 26, shape, dimensions and position of which correspond to the forms, dimensions and arrangement of the covering ribs 20 of the upper side 11 of the base 8 of the main part 6. In preferred embodiments, execution, in which the rib 20 is replaced by a concentric annular grooves covered rib 26 formed on the lower side of the base 21 a set of edges, is arranged to communicate with the annular grooves.
When the main part 6 and the insert 7 connect for education support element 3 according to the second preferred variant implementation of the invention, the insert 7 is put on the extension 9 of the main part 6, while covered by the ribs 25 of the insert 7 interact with the previously described covering the ribs 20 of the main part 6, providing, thus, the locking of the two parts of the support element 3 relative to each other. In this case, the main portion 6 performs active support function, and the ribs 20 and 26 can adjust the stiffness of the node. The side of the ledge 25 forms, in this case, the sealing Cup, when the maximum compression of the spring insert 7 is pressed tightly to the main part 6 of the support element 3.
Thus, the invention allows to realize a support variable stiffness for the spring 1 suspension, which also allows you to avoid gravel and increase durability. Both of a variant of the implementation were presented as examples and clear, that, without leaving the scope of the present invention, the box submitted in the first embodiment, may not include the sealing edge 19.
1. Supporting element (3) for the spring (1) suspension of the vehicle, consisting of a main part (6) and essentially rigid or semi-rigid insert (7), and spring (1) suspension is based directly on essentially rigid or semi-rigid insert (7), characterized in that
the main part (6) contains essentially truncated conical cap (8), passing from the top side (11) of smaller diameter, which is coaxially performed essentially truncated cone elongation (9), the greatest diameter of which is essentially less than the smallest diameter of the cap (8),
inserting (7) contains essentially truncated conical base (13, 21), starting from the top side of a smaller diameter, which is coaxially performed essentially truncated cone elongation (14, 22), while in the insert (7) is made of the axial cavity, the internal shape and dimensions of which correspond to the outer shape and size of the extension (9) of the main part (6).
2. Supporting element according to claim 1, characterized in that the maximum diameter of essentially truncated cone extension (14)is essentially less than the smallest diameter of the base (13), while in the lower part of the base (13) of the insert (7) performed a ledge (16).
3. Reference e is ement according to claim 2, characterized in that the connection of the main part (6) and insert (7) is carried out by planting the top side (11) of the cap (8) of the main part (6) in step (16), the lower part of the base (13) of the insert (7) completely covers the top side (11), forming around it sealing flange (19).
4. Supporting element according to claim 2 or 3, characterized in that around the lower part (10) is a sealing lip (12), the diameter of which essentially exceeds the diameter of the bottom side (10) of the cap (8) of the main part (6).
5. Supporting element according to claim 1, characterized in that the upper part of the extension (14) of the insert (7) contains the edge (18), the diameter of which is essentially greater than the smallest diameter elongation (14).
6. Supporting element according to claim 1, characterized in that the upper part of the truncated cone elongation (22) contains essentially hemispherical segment (23).
7. Supporting element according to claim 6, characterized in that the largest diameter of the base (21)is essentially equal to the diameter of the upper side (11) of the cap (8) of the main part (6).
8. Supporting element according to claim 6 or 7, characterized in that at the periphery, essentially, of a truncated cone extension (22) of the insert (7) is made essentially cylindrical annular groove (24), designed for the installation therein of a spring (1) suspension.
9. The suspension device of the vehicle, characterized in that the spring (1) suspension installation is Lena around the extension (14) of the insert (7) between the upper side of the base (13) of the insert (7) and the bottom side edge (18) of the insert (7) of the support element (3) according to claim 5.