Damping bushing for special-shaped chassis

Abstract

The invention discloses a damping bushing for a special-shaped chassis, and relates to the field of automobile accessories, the damping bushing comprises a rubber ring, a positioning ring and a mounting ring, damping oil is filled between the outer wall of the positioning ring and the inner wall of the rubber ring, and a plurality of spring dampers are rotatably arranged between the outer wall of the positioning ring and the inner wall of the rubber ring; a guide rod is rotationally arranged on the outer wall of the positioning ring, and the movable end of the guide rod is rotationally connected to the inner wall of the rubber ring through a movable base. The buffering effect of the rubber ring is improved through the guide rod and the fixed spring, after the rubber ring is extruded, damping oil enters the guide rod through the one-way inlet valve and then enters the movable sleeve through the one-way outlet valve, the damping oil can eject the movable end of the movable sleeve outwards and enables the fixed spring to be compressed, and after the fixed spring is compressed, the damping oil is separated from the movable sleeve. The rubber ring can bear larger shaking force and pressure, and the buffering effect on severe road conditions is better.

Description

Technical Field

[0001] The invention relates to the field of automobile accessories, in particular to a shock-absorbing bushing for a special-shaped chassis. Background Art

[0002] The suspension system of the automobile chassis can effectively isolate and reduce the vibration excitation caused by uneven road surface during the driving process of the automobile, and play a role in buffering and vibration reduction. By improving the buffering and vibration reduction performance of the suspension system, a series of automobile driving performance such as the ride comfort, handling stability and NVH performance of the automobile can be improved.

[0003] At present, in order to improve the buffering and vibration reduction performance of the suspension system, chassis bushings are usually set on the connecting parts of the special-shaped chassis. During installation, the chassis bushing is put on the bolt to be installed, and the bolt is inserted into the metal sleeve fixed to the automobile chassis (of course, it can also be other structural parts) and screwed into the corresponding bolt hole. At this time, the chassis bushing is located in the sleeve to eliminate the connection gap.

[0004] The chassis bushing can absorb and cushion these impact forces through its own elastic deformation, reduce the transmission of vibration to the vehicle body, and improve driving comfort. However, on roads with relatively poor road conditions, the vibration frequency is too large, and the elastic deformation of the bushing itself can hardly meet the shock absorption effect, which affects the driving experience of the vehicle to a certain extent. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a shock-absorbing bushing for a special-shaped chassis to solve the technical problem that the general shock-absorbing bushing has a poor shock-absorbing effect on harsh road conditions.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shock-absorbing bushing for a special-shaped chassis, comprising a rubber ring, a positioning ring and a mounting ring, wherein damping oil is filled between the outer wall of the positioning ring and the inner wall of the rubber ring, a plurality of spring dampers are rotatably arranged between the outer wall of the positioning ring and the inner wall of the rubber ring, a guide rod is rotatably arranged on the outer wall of the positioning ring, a movable end of the guide rod is rotatably connected to the inner wall of the rubber ring through a movable seat, a fixed block is movably arranged on the outer wall of the guide rod, a movable sleeve is installed at the bottom of the fixed block, a fixed spring is installed between the fixed block and the movable seat, a plurality of oil outlet holes are opened on the outer wall of the fixed end of the movable sleeve, the fixed end of the guide rod is connected to the movable sleeve through a one-way outlet valve, and a one-way inlet valve is installed on the outer wall of the guide rod.

[0007] The present invention is further configured such that a slot is provided on the outer wall of the installation ring, a limit block is provided on the inner wall of the slot, an insert plate is provided on the inner wall of the slot, and a positioning plate is provided at one end of the insert plate.

[0008] The present invention is further configured such that a fixing groove is provided at one end of the positioning plate, a clamping block is provided on the inner wall of the fixing groove, and the clamping block is connected to the positioning plate by a rivet.

[0009] The present invention is further configured such that a plurality of groups of buffer arc plates are arranged between the rubber ring and the positioning ring, and a membrane flap is provided on the outer wall of the buffer arc plate.

[0010] The present invention is further configured such that the plug plate and the positioning plate are manufactured in one piece, and the connection between the plug plate and the positioning plate can be bent.

[0011] The present invention is further configured such that a movable sealing structure is provided at the connection between the movable end and the fixed end of the movable sleeve, and the outer wall of the movable end of the movable sleeve is tightly attached to the inner wall of the fixed end to seal the oil outlet hole.

[0012] The present invention is further configured such that the positioning ring and the mounting ring are made of aluminum alloy.

[0013] The present invention is further configured such that the diameter of the one-way outlet valve is greater than the diameter of the oil outlet hole.

[0014] To sum up, the present invention mainly has the following beneficial effects: the present invention improves the buffering effect of the rubber ring through the guide rod and the fixed spring. When the rubber ring is squeezed, the damping oil enters the guide rod through the one-way inlet valve, and then enters the movable sleeve through the one-way outlet valve. The damping oil will push the movable end of the movable sleeve outward and compress the fixed spring. After the fixed spring is compressed, the rubber ring can withstand greater vibration force and pressure, and has a better buffering effect on harsh road conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a cross-sectional view of the internal structure of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the guide rod of the present invention;

[0018] Figure 4 It is the internal structure diagram of the present invention;

[0019] Figure 5 For the present invention Figure 4 A magnified view of the structure at A;

[0020] Figure 6 It is a schematic diagram of the plug board structure of the present invention.

[0021] In the figure: 1, rubber ring; 2, positioning ring; 3, mounting ring; 4, buffer arc plate; 5, diaphragm; 6, spring damper; 7, guide rod; 8, rivet; 9, one-way outlet valve; 10, movable sleeve; 11, oil outlet hole; 12, fixing block; 13, fixing spring; 14, one-way inlet valve; 15, movable seat; 16, plug plate; 17, positioning plate; 18, limit block; 19, clamping block. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] A shock absorbing bushing for a special-shaped chassis, such as Figure 1-6 As shown, it includes a rubber ring 1, a positioning ring 2 and a mounting ring 3. Damping oil is filled between the outer wall of the positioning ring 2 and the inner wall of the rubber ring 1. Multiple groups of buffer arc plates 4 are arranged between the rubber ring 1 and the positioning ring 2. A diaphragm 5 is opened on the outer wall of the buffer arc plate 4. Multiple spring dampers 6 are rotatably arranged between the outer wall of the positioning ring 2 and the inner wall of the rubber ring 1. When the rubber ring 1 is deformed by the vibration force, the buffer arc plate 4 is deformed accordingly, and the damping oil is discharged from the diaphragm 5. In conjunction with the spring damper 6, the buffer arc plate 4 can buffer the vibration force, and due to the presence of the damping oil, the buffering effect can be further improved. When the vibration force disappears, the damping oil re-enters the buffer arc plate 4 from the diaphragm 5 to prepare for the next vibration buffering.

[0024] The outer wall of the positioning ring 2 is rotatably provided with a guide rod 7, and the movable end of the guide rod 7 is rotatably connected to the inner wall of the rubber ring 1 through a movable seat 15. The outer wall of the guide rod 7 is movably provided with a fixed block 12, and a movable sleeve 10 is installed at the bottom of the fixed block 12. A fixed spring 13 is installed between the fixed block 12 and the movable seat 15. A plurality of oil outlet holes 11 are opened on the outer wall of the fixed end of the movable sleeve 10. The fixed end of the guide rod 7 is connected to the movable sleeve 10 through a one-way outlet valve 9. A one-way inlet valve 14 is installed on the outer wall of the guide rod 7. When the rubber ring 1 is subjected to vibration force, the guide rod 7 The movable end will reciprocate. When the movable end of the guide rod 7 contracts inward, the damping oil will enter the movable sleeve 10 from the fixed end of the guide rod 7 through the one-way outlet valve 9. At this time, the movable end of the movable sleeve 10 is squeezed and moves outward, and the fixed spring 13 is compressed by the fixed block 12. When the movable end of the guide rod 7 moves outward, the external damping oil enters the fixed end of the guide rod 7 through the one-way inlet valve 14 to replenish the damping oil. After the fixed spring 13 is adjusted by the fixed block 12, the fixed spring 13 is compressed, and can withstand a greater buffering force.

[0025] The damping oil entering the movable sleeve 10 will flow out from the oil outlet hole 11. Since the diameter of the one-way outlet valve 9 is larger than the diameter of the oil outlet hole 11, the amount of damping oil provided by the one-way outlet valve 9 to the movable sleeve 10 is greater than the amount of damping oil discharged from the oil outlet hole 11. When the vibration force applied to the rubber ring 1 decreases, the movement amplitude of the movable end of the guide rod 7 also decreases accordingly. The amount of damping oil provided by the one-way outlet valve 9 to the movable sleeve 10 is reduced, but the damping oil is still discharged from the oil outlet hole 11. The extended movable end of the movable sleeve 10 will shrink inward and no longer compress the fixed spring 13. The elastic force of the fixed spring 13 itself will also push the fixed block 12 and the movable end of the movable sleeve 10 to move inward, so that the entire movable sleeve 10 is reset.

[0026] The above structure realizes the change of the buffering mode of the bushing during larger vibration and smaller vibration. The basic buffering mode is realized by the spring damper 6 and the buffer arc plate 4, and the damping oil is used for preliminary buffering. When the bushing is subjected to a larger vibration, the movable end of the guide rod 7 has a larger amplitude, and the amount of damping oil provided to the movable sleeve 10 increases, so that the movable sleeve 10 compresses the fixed spring 13. The fixed spring 13 can withstand a larger buffering force, and the double buffering of the guide rod 7 and the movable sleeve 10 with the damping oil can effectively improve the buffering effect of the bushing when a large vibration occurs. When the vibration gradually decreases, the movable sleeve 10 and the fixed spring 13 are gradually reset.

[0027] The positioning ring 2 and the mounting ring 3 are made of aluminum alloy. The aluminum alloy material can better protect the rubber ring 1, but it will cause troublesome installation. The outer wall of the mounting ring 3 is provided with a slot, and the inner wall of the slot is provided with a limit block 18. The inner wall of the slot is provided with an insert plate 16, and one end of the insert plate 16 is provided with a positioning plate 17. A fixing groove is provided at one end of the positioning plate 17, and a card block 19 is provided on the inner wall of the fixing groove. The card block 19 is connected to the positioning plate 17 by a rivet 8. The insert plate 16 and the positioning plate 17 are manufactured as an integrated whole, and the connection between the insert plate 16 and the positioning plate 17 is as follows: The mounting ring 3 can be bent at the slot position. When the overall bushing needs to be installed, since the mounting ring 3 is made of aluminum alloy, the aluminum alloy has a certain elasticity, the mounting ring 3 can be slightly bent at the slot position so that the mounting ring 3 can be inserted into the position to be installed. However, at this time, the overall bushing is not installed firmly. The positioning plate 17 is bent downward, and the plug plate 16 is inserted into the slot. After the plug plate 16 is inserted into place, the positioning plate 17 is reset, and the limit block 18 is fixed with the positioning plate 17. The mounting ring 3 is fixed at the installation position as a whole under the action of the plug plate 16 and the positioning plate 17.

[0028] After the fixation is completed, the block 19 is inserted into the fixing groove. The block 19 can fix the connection between the plug plate 16 and the positioning plate 17 to prevent the bending part from reducing the overall structural strength. When the bushing needs to be removed, the positioning plate 17 is hit with a hammer to pull out the plug plate 16 and the entire bushing.

[0029] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A shock-absorbing bushing for a special-shaped chassis, comprising a rubber ring (1), a positioning ring (2) and a mounting ring (3), characterized in that: Damping oil is filled between the outer wall of the positioning ring (2) and the inner wall of the rubber ring (1); a plurality of spring dampers (6) are rotatably arranged between the outer wall of the positioning ring (2) and the inner wall of the rubber ring (1); a guide rod (7) is rotatably arranged on the outer wall of the positioning ring (2); the movable end of the guide rod (7) is rotatably connected to the inner wall of the rubber ring (1) through a movable seat (15); a fixed block (12) is movably arranged on the outer wall of the guide rod (7); a movable sleeve (10) is installed at the bottom of the fixed block (12); a fixed spring (13) is installed between the fixed block (12) and the movable seat (15); a plurality of oil outlet holes (11) are opened on the outer wall of the fixed end of the movable sleeve (10); the fixed end of the guide rod (7) and the movable sleeve (10) are connected through a one-way outlet valve (9); and a one-way inlet valve (14) is installed on the outer wall of the guide rod (7).

2. The shock-absorbing bushing for a special-shaped chassis according to claim 1, characterized in that: The outer wall of the installation ring (3) is provided with a slot, the inner wall of the slot is provided with a limit block (18), the inner wall of the slot is provided with an insert plate (16), and one end of the insert plate (16) is provided with a positioning plate (17).

3. The shock-absorbing bushing for a special-shaped chassis according to claim 2, characterized in that: A fixing groove is provided at one end of the positioning plate (17), a clamping block (19) is provided on the inner wall of the fixing groove, and the clamping block (19) is connected to the positioning plate (17) via a rivet (8).

4. The shock-absorbing bushing for a special-shaped chassis according to claim 1, characterized in that: A plurality of groups of buffer arc plates (4) are arranged between the rubber ring (1) and the positioning ring (2), and a membrane flap (5) is provided on the outer wall of the buffer arc plate (4).

5. The shock-absorbing bushing for a special-shaped chassis according to claim 2, characterized in that: The inserting plate (16) and the positioning plate (17) are manufactured in one piece, and the connection between the inserting plate (16) and the positioning plate (17) can be bent.

6. The shock-absorbing bushing for a special-shaped chassis according to claim 1, characterized in that: A movable sealing structure is provided at the connection between the movable end and the fixed end of the movable sleeve (10), and the outer wall of the movable end of the movable sleeve (10) is tightly attached to the inner wall of the fixed end to seal the oil outlet hole (11).

7. The shock-absorbing bushing for a special-shaped chassis according to claim 1, characterized in that: The positioning ring (2) and the mounting ring (3) are made of aluminum alloy.

8. The shock-absorbing bushing for a special-shaped chassis according to claim 1, characterized in that: The diameter of the one-way outlet valve (9) is greater than the diameter of the oil outlet hole (11).

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