CN211000816U

CN211000816U - Baffle anti-rotation shock absorber upper support

Info

Publication number: CN211000816U
Application number: CN201921139197.1U
Authority: CN
Inventors: 谭珂; 柳东风
Original assignee: Shanghai Carthane Co ltd
Current assignee: Shanghai Carthane Co ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-07-14
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a baffle is prevented rotation and is supported on bumper shock absorber is applicable to and connects automobile shock absorber ware and automobile body or chassis spare part, contains: the vibration isolation device comprises a shell, an end cover, a vibration isolation element and a partition plate positioned in the center of the vibration isolation element; a first accommodating space and a second accommodating space are arranged in the inner cavity of the shell from the upper end to the lower end, and a spacing layer is arranged between the first accommodating space and the second accommodating space; the first accommodating space is used for placing the vibration isolation element and the partition plate; the partition plate and the cross section of the first accommodating space are in a similar axial symmetry shape, and the length and the width of the axial symmetry shape are unequal; the partition plate is installed at the center of the vibration isolation element, and the elastomer vibration isolation element is tightly installed in the sealed space formed by the first accommodating space in a thread-sealing mode. The utility model discloses when keeping the performance, solved among the prior art circular baffle design when using with the adjustable bumper shock absorber cooperation of damping, the baffle leads to bumper shock absorber control pencil winding problem along with the bumper shock absorber piston rod is rotatory.

Description

Baffle anti-rotation shock absorber upper support

Technical Field

The utility model discloses the manufacturing of automobile parts especially relates to a baffle is anti-rotation supports on car rear suspension bumper shock absorber.

Background

The support on the shock absorber is an important elastic element for attenuating the vibration of the automobile, and the automobile chassis is connected with the automobile suspension shock absorber through the support on the shock absorber. The shock absorber is supported by the polyurethane elastomer vibration isolation element, so that vibration and noise which are excited by a road surface and transmitted to a vehicle body through wheels and the shock absorber and vibration and noise generated by the shock absorber can be attenuated, decoupled and isolated; the vibration isolation element also provides possibility for the deflection movement of the shock absorber, and enables the whole vehicle to meet the requirements of the movement and the bearing of the shock absorber in the axial direction, the radial direction and the deflection direction. The performance parameters of the support on the shock absorber have great influence on the dynamic performance of the whole vehicle, and the performance parameters need to be accurately adjusted and calibrated according to different chassis designs. Through supporting reasonable matching between the bumper shock absorber and the bumper shock absorber on the bumper shock absorber, can improve whole car performance: the noise level in the vehicle is reduced, the vibration amplitude of the vehicle body and the wheels near the natural frequency is reduced, the dynamic load of the wheels is reduced, the driving safety is improved, the follow-up performance in the lateral direction and the front-back direction is provided, and the driving safety is improved.

Along with the improvement of the intelligent level of the whole vehicle, the adjustable shock absorber is increasingly widely applied. Because the cross-section of the accommodation space of the shell inner cavity of the support on the present common shock absorber is circular, the cross section of the corresponding partition plate is also circular, the support on the shock absorber of the design is under the action of the rotating torque transmitted by the piston rod of the shock absorber in the matching use process with the adjustable shock absorber, the partition plate is easy to rotate relative to the shell, the winding problem of the control cable of the shock absorber is caused, the cable can be abraded in serious conditions, and the function failure of the shock absorber is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the baffle rotation problem that supports easily appears when using with adjustable bumper shock absorber cooperation on the bumper shock absorber.

In order to achieve the above object, the utility model provides a baffle is prevented rotation and is supported on bumper shock absorber is applicable to and connects automobile shock absorber ware and automobile body or chassis spare part, contains: the vibration isolation device comprises a shell, an end cover, a vibration isolation element and a partition plate positioned in the center of the vibration isolation element;

the shell is a cup-shaped body with two opposite bulges on the outer surface, the bulges are provided with fixing hole positions, the upper end and the lower end of the shell are provided with openings, the end cover covers the upper end opening and is connected with the shell into a whole, and the end cover is provided with a central hole; a first accommodating space and a second accommodating space are arranged in the inner cavity of the shell from the upper end to the lower end, the first accommodating space and the second accommodating space are separated by a spacing layer, and the spacing layer is provided with a central hole; the baffle plate is provided with a central hole, is on the same axis with the central hole of the end cover and the central hole of the spacing layer and is used for installing a shock absorber connecting rod;

the first accommodating space is used for placing the vibration isolation element and the partition plate; the partition plate and the cross section of the first accommodating space are in a similar axial symmetry shape, the length and the width of the axial symmetry shape are unequal, and a uniform gap is formed between the corresponding edges of the partition plate and the first accommodating space; the length of the partition plate is not less than the width of the first accommodating space, and the width of the first accommodating space is less than the length of the first accommodating space; the vibration isolation element is an elastomer product, and the partition plate is pressed and fixed in the groove in the center of the vibration isolation element, so that the groove of the vibration isolation element is deformed and completely conforms to the shape of the partition plate; the vibration isolation element is tightly and seamlessly installed in the first accommodating space, and the vibration isolation element is subjected to pre-compression force in the axial direction and the radial direction.

As a specific example, the first accommodating space has an oval cross section, and the partition has an oval cross section similar to the cross section of the first accommodating space. Specifically, the difference between the major diameter and the minor diameter of the oval shape is 10% to 200% of the length of the uniform gap between the partition plate and the corresponding edge of the cross section of the first receiving space, and usually 80% to 120% of the total gap.

As a specific example, the cross section of the first accommodating space is in a shape of a rounded rectangle, and the four rounded radii of the rounded rectangle are consistent; the cross section of the partition plate is in a round-corner rectangle shape similar to the cross section of the first accommodating space.

As a specific example, the inner wall of the first accommodating space corresponding to the inner cavity of the housing is provided with convex ribs uniformly distributed along the circumferential direction, the number of the convex ribs is an integral multiple of two, and the number of the commonly used convex ribs is 4 or 6; the height of the ribs is not more than 70% of the length of the uniform gap between the partition plate and the corresponding edge of the cross section of the first accommodating space, and the height of the ribs is 30-50% of the gap.

As a specific example, the vibration isolation members may have a circular cross-section, which may be formed by machining a preformed circular tube, or may have an oval or rounded rectangular cross-section, which may be formed by casting in a mold.

The end cover is connected with the shell into a whole through spin riveting.

The shell is cast from a cast aluminum alloy material.

The vibration isolation element is a porous polyurethane elastomer.

The material of the baffle is steel or aluminum alloy or other metal materials.

Compared with the prior art, the utility model, following advantage has:

1. the lengths and the widths of the first accommodating space of the shell and the cross section of the partition plate are not equal (such as an oval shape and a round rectangle shape), when the piston rod of the shock absorber is rotated by a driving torque, the partition plate is acted by a torsional torque, and the long edge of the partition plate of the oval shape or the round rectangle shape is larger than the short edge of the built-in space, so that the partition plate is structurally limited by the first accommodating space and the partition plate when rotating and cannot exceed the short edge of the built-in space to rotate any further; meanwhile, the vibration isolation element generates torsional deformation under the action of torsional moment to exert reaction moment resisting torsion on the partition plate, and also generates radial deformation and radial reaction force generated due to the influence of the shape of the partition plate, the reaction force further improves the reaction moment resisting the rotation of the partition plate relative to the moment of the upper support axis, and the problem of rotation of the partition plate can be effectively prevented under the combined action of the friction force between the vibration isolation element and the first accommodating space. Compare with current circular baffle, the utility model discloses a rotating more is difficult for taking place for the baffle.

2. The vibration isolation element can be directly molded in a mold, and can also be processed and molded through a prefabricated round pipe machine, so that the production efficiency is improved.

3. The partition board is pressed in the groove in the center of the vibration isolation element, so that the vibration isolation element is deformed and completely fits the shape of the partition board, the partition board and the vibration isolation element are tightly combined through radial elasticity generated by deformation of the vibration isolation element, the partition board and the vibration isolation element do not need to be bonded or integrally foamed with a special-shaped partition board in other existing anti-rotation technologies, and the process is simplified.

4. The utility model discloses a support on the bumper shock absorber on the whole car mounting means and all with the connected mode of bumper shock absorber unanimously with the support on the current bumper shock absorber, consequently need not to change the installation custom.

Drawings

FIG. 1 shows the supporting parts of the shock absorber assembly

FIG. 2 is a schematic view of the connection between the upper support of the shock absorber and the adjustable shock absorber connecting rod of the present invention

FIG. 3A is a cross-sectional shape of the first accommodation space and the partition plate of the present invention

FIG. 3B is an exemplary cross-sectional shape of the first accommodation space and the partition plate of the present invention

FIG. 3C is an example (III) of the cross-sectional shape of the first accommodation space and the partition plate of the case of the present invention

Fig. 4A shows an example of the structure of the vibration isolating member of the present invention (a)

FIG. 4B shows an example of the structure of the vibration isolating member of the present invention (II)

Description of the symbols in the drawings:

housing 10

Center hole I11

Protrusion 12

First accommodation space 13

Second accommodation space 14

Spacer layer 15

Vibration isolation element 20

Partition board 30

End cap 40

Center hole two 41

Nut 50

Shock absorber connecting rod 60

Cable 70

Detailed Description

The technical solution of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The embodiment of the utility model provides a support design on bumper shock absorber is applicable to and connects automobile shock absorber ware and automobile body or chassis spare part, as shown in figure 1, contains: a housing 10, an end cap 40, a vibration isolating member 20, and a partition plate 30 located at the center of the vibration isolating member 20;

the shell 10 is a cup-shaped body with two opposite protrusions 12 on the outer surface, and the protrusions 12 are provided with fixing hole sites for supporting and fixing the upper part of the shock absorber on the vehicle body through bolts; the upper end and the lower end of the shell 10 are provided with openings, the end cover 40 covers the upper end openings and is connected with the shell 10 into a whole in a spin riveting or other connection mode, and the end cover is provided with a second central hole 41; the housing 10 is made of cast aluminum alloy material, and different grades of material can be selected according to different application requirements of parts.

A first accommodating space 13 and a second accommodating space 14 are arranged in the inner cavity of the shell 10 from the upper end to the lower end, a spacing layer 15 is arranged between the first accommodating space 13 and the second accommodating space 14, and a first central hole 11 is formed in the spacing layer 15; the second accommodation space 14 is used for mounting a suspension bump; the first accommodation space 13 is used for placing the vibration isolation member 20 and the partition plate 30; the partition plate 30 is installed at the center of the vibration isolation element 20, the edge of the partition plate is covered by the vibration isolation element 20, the two are tightly installed in the first accommodating space 13 in a screwed manner, the vibration isolation element 20 is vertically clamped between the spacing layer 15 and the end cover 40, and under the action of a certain pre-pressing force, the vibration isolation element 20 is abutted against the inner wall of the shell 10 in the radial direction;

the spacer 30 is a plate-like member that secures the shock absorber link 60 to complete the connection of the shock absorber upper support to the shock absorber, body or other chassis member; generally made of metal, and can be made of steel and aluminum alloy materials, but is not limited to the steel and the aluminum alloy materials.

The partition plate 30 has a similar axial symmetry shape with the cross section of the first accommodating space 13, the length and the width of the axial symmetry shape are not equal, the partition plate 30 is located at the center point of the first accommodating space 13, and corresponding similar edges of the cross sections of the partition plate and the first accommodating space 13 have a uniform gap; as shown in fig. 3A, the cross section of the partition plate 30 and the first accommodating space 13 is elliptical, and the difference between the major diameter and the minor diameter of the ellipse is 10% to 200%, usually 80% to 120%, of the length of the uniform gap between the partition plate 30 and the corresponding edge of the cross section of the first accommodating space 13; the cross-section may also be a rounded rectangle as shown in fig. 3B, 3C. The length to width dimension ratio of the cross section of the partition 30 to the first accommodation space 13 is also related to the radial stiffness requirement of the vibration insulating element, the material of the vibration insulating element, the thickness of the partition.

The vibration isolation members 20 may be circular in cross-section (as shown in fig. 4B), machined through a prefabricated round tube; or oval (as shown in fig. 4A) or rectangular with rounded corners, and is molded by casting in a mold; the vibration isolation element 20 with the oval section is used for being integrally formed with the partition plate 30 with the oval section in a foaming mode, the vibration isolation element 20 with the round rectangular section is used for being integrally formed with the partition plate 30 with the round rectangular section in a foaming mode, and the vibration isolation element 20 with the circular section is assembled with the partition plate 20 with the oval section/the round rectangular section and deformed to form an oval/round rectangular shape.

The partition plate 30 is pressed in a groove at the center of the vibration isolation element 20, so that the vibration isolation element 20 is deformed and completely conforms to the shape of the partition plate, and the partition plate 30 is tightly combined with the vibration isolation element 20 by the radial elastic force generated by the deformation of the vibration isolation element 20; the elastic vibration isolating member 20 is tightly and sealingly installed in the first receiving space 13 to form a sealed space, and the partition plate 30 is thereby fixed to a central point of the first receiving space 13.

The vibration isolation member 20 of the present invention is made of an elastomer material, for example: the cellular polyurethane elastomer, among which the cellular polyurethane elastomer of NDI type is preferred but not limited thereto. In a preferred embodiment, the elastomeric material of the vibration isolation member 20 of the present invention has at least any two of the following material properties: the density range is 200-1000 kg/m according to DIN EN ISO 845³Wherein the density is 300-750 kg/m³(ii) a Tensile Strength Range according to DIN EN ISO 1798The enclosure is 2-8 MPa; the elongation at break ranges from 200% to 700% according to DIN EN ISO 1798; the tear strength is in the range of 4 to 12N/mm according to DIN ISO 34-1B (b). In a more preferred embodiment, the elastomeric material has three of these material properties, or more preferably satisfies all four of these material properties.

In the case of cellular polyurethane elastomers, the raw materials are generally prepared on the basis of isocyanate diisocyanatotoluene (TDI), Naphthalene Diisocyanate (NDI), and preferably 2, 6-diisocyanatotoluene (TODI) and 1, 5-naphthalene diisocyanate (5-NDI). Injecting the prepared raw materials into a closed cavity, foaming and molding the raw materials in the cavity at a certain temperature and time, and demolding to obtain the porous polyurethane elastomer; in the manufacturing process, the partition plate 30 is fixed in the mold cavity and taken out together with the foamed vibration isolating member 20. Fig. 4A shows an embodiment of the vibration isolating member 20, in which the vibration isolating member 20 has an oval cross section, and the outer peripheral surface of the vibration isolating member 20 is attached to the inner wall of the inner cavity of the housing 10 corresponding to the first accommodating space 13. In other embodiments, the vibration isolation element 20 of the present invention is a solid of revolution, and can be obtained by machining a prefabricated bar or pipe during the manufacturing process, and the end surface profile can be obtained by directly cutting with a forming tool, so as to obtain the vibration isolation element 20 shown in fig. 4B; by being assembled with the partition plate 30 having an elliptical cross section, the elliptical cross section is naturally formed by the partition plate 30. Compared with the single vibration isolation element which is directly foamed and formed in the cavity, the process can manufacture the part more cheaply and effectively improve the stability of the performance of the part.

In actual use, the assembly of the vibration insulating element 20 inside the casing presents a certain pre-compression stress, which means that the vibration insulating element itself, supported on the shock absorber without any external forces, presents a certain compression stress inside it, which is achieved by mounting the vibration insulating element 20 in a space smaller than its volume. The elastomer vibration isolation element 20 supported on the shock absorber is axially clamped in the closed shell 10 and bears a certain pre-compression deformation, and the axial pre-compression amount is the ratio of the height of the vibration isolation element in a free state to the height difference after installation to the free height; for example, the vibration-isolating members 20 having a height of 30mm are mounted in a housing 10 having a height of 24mm and the same diameter, with an axial precompression of (30-24)/30-20%; the axial precompression of the vibration isolation component 20 of the present invention is 5% -70%, and the common range is 15% -45%. The vibration isolation element 20 radially fits the inner wall of the housing 10 and undergoes a certain pre-compression deformation, the amount of which is the ratio of the difference between the diameter of the vibration isolation element 20 in the free state and the diameter after installation to the diameter in the free state; for example, the vibration-isolating member 20 having a diameter of 50mm is mounted in the housing 10 having a diameter of 48mm, and the radial precompression amount thereof is 40% for a diaphragm diameter of 45 mm; the utility model discloses a vibration isolation component 20's radial precompression volume is 0.1% ~ 70%, and the common range is 15% ~ 45%. The utility model discloses a support on the bumper shock absorber, its axial precompression volume can be inconsistent with radial precompression volume.

The vibration isolating elements 20, the spacer 30, the end caps 40, the distance layer 15 are provided with central holes, respectively, on the same axis for mounting the shock absorber connecting rod. When the damper is installed, as shown in fig. 2, the narrower end of the damper link 60 passes through the spacer layer 15, the spacer plate 30, and the center hole of the end cap 40, and is fastened to the spacer plate 30 by the nut 50, and the cable 70 passes through the damper link 60. The utility model discloses a support on the bumper shock absorber on the mounting means of putting in order on the car and with the connected mode of bumper shock absorber all with present bumper shock absorber on the support unanimous.

In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An anti-rotation bumper brace for a bulkhead adapted for connecting an automotive bumper brace to an automotive body or chassis component, comprising: a housing (10), an end cap (40), a vibration isolation member (20), and a partition plate (30) located at the center of the vibration isolation member (20);

the shell (10) is a cup-shaped body with two opposite protrusions (12) on the outer surface, the protrusions (12) are provided with fixing hole positions, the upper end and the lower end of the shell (10) are provided with openings, an end cover (40) covers the upper end opening and is connected with the shell (10) into a whole, and the end cover is provided with a second central hole (41); a first accommodating space (13) and a second accommodating space (14) are arranged in the inner cavity of the shell (10) from the upper end to the lower end, the first accommodating space (13) and the second accommodating space (14) are separated by a spacing layer (15), and the spacing layer (15) is provided with a first central hole (11); the partition plate (30) is provided with a central hole, is coaxial with the central hole II (41) of the end cover (40) and the central hole I (11) of the spacing layer (15), and is used for installing a shock absorber connecting rod;

the first accommodating space (13) is used for placing the vibration isolation element (20) and the partition plate (30); the cross sections of the partition plate (30) and the first accommodating space (13) are in a similar axial symmetry shape, a uniform gap is formed between corresponding edges of the partition plate and the first accommodating space, and the length and the width of the axial symmetry shape are unequal; the length of the partition plate (30) is not less than the width of the first accommodating space (13), and the width of the first accommodating space (13) is less than the length of the first accommodating space (13); the vibration isolation element (20) is an elastomer product, and the partition plate (30) is pressed and fixed in a groove in the center of the vibration isolation element (20) to deform the groove of the vibration isolation element (20); the vibration isolation member (20) is mounted in the first accommodation space (13), and the vibration isolation member (20) is subjected to a pre-compression force in the axial direction and the radial direction.

2. The anti-rotation diaphragm damper upper support according to claim 1, wherein the first receiving space (13) has an oval cross-section, and the diaphragm (30) has an oval cross-section similar to the cross-section of the first receiving space (13).

3. The anti-rotation diaphragm damper upper support according to claim 2, wherein the difference between the major and minor diameters of the elliptical cross-section of the first receiving space (13) is between 10% and 200% of the length of said uniform gap between the corresponding edges of the cross-section of the diaphragm (30) and the first receiving space (13).

4. The anti-rotation diaphragm damper upper support according to claim 3, wherein said difference is 80% to 120% of said gap length.

5. The anti-rotation shock absorber upper support of the bulkhead according to claim 1, wherein the cross section of the first housing space (13) has a rounded rectangle, four rounded radii of which are uniform; the cross section of the partition plate (30) is in a rounded rectangle shape similar to the cross section of the first accommodating space (13).

6. The anti-rotation shock absorber upper support of claim 1, wherein the cross-section of the vibration isolation element (20) is circular or elliptical or rectangular with rounded corners.

7. The anti-rotation spacer on damper upper support according to claim 1, characterized in that the inner wall of the housing (10) cavity corresponding to the first receiving space (13) has ribs uniformly distributed along the circumferential direction, the number of the ribs is an integral multiple of two, and the height of the ribs is not more than 70% of the length of the uniform gap between the spacer (30) and the corresponding edge of the cross section of the first receiving space (13).

8. The anti-rotation spacer damper upper support according to claim 1, wherein the end cap (40) is integrally connected to the shell (10) by spin riveting.

9. The anti-rotation diaphragm damper upper support according to claim 1, wherein the shell (10) is cast from a cast aluminum alloy material; the material of the baffle plate (30) is steel or aluminum alloy.

10. The anti-rotation shock absorber upper support of spacer according to claim 1, characterized in that the vibration isolating element (20) is a cellular polyurethane elastomer.