Automobile suspension damping bushing

Abstract

The utility model relates to an automobile suspension damping bushing which comprises an outer pipe, an inner core, a middle body and reinforcing pieces, the middle body is located between the outer pipe and the inner core, the reinforcing pieces are located in the middle body and integrally formed with the middle body, the reinforcing pieces are made of metal materials, the reinforcing pieces are in an arc shape, and the reinforcing pieces are distributed in the circumferential direction of the inner core. A gap is kept between every two adjacent reinforcing pieces, and a through hole is formed in the position, corresponding to the middle body, of each gap and extends in the axial direction of the middle body. According to the damping bush of the automobile suspension, the reinforcer is arranged to limit flowing of rubber and increase rigidity; a plurality of reinforcing pieces are arranged, the high-rigidity requirement in all directions is met, meanwhile, a rigidity linear section can be increased, the linear stability of high rigidity is maintained while the whole vehicle movement is better transmitted, and the comfort cannot be reduced while the whole vehicle meets the control requirement; and the through holes are formed to ensure the requirement of a long linear section, and the requirements of control and comfort on the bushing are considered.

Description

Technical Field

[0001] The utility model relates to a damping bushing for an automobile suspension. Background Art

[0002] As people's living standards improve, more and more attention is paid to the comfort performance of vehicles during driving. Bushings are the main components for controlling movement in automobile multi-link suspensions, and have a great impact on the comfort and handling of the entire vehicle. Bushings with high stiffness are conducive to the handling of the entire vehicle, so that every swing of the vehicle body can be quickly reflected to the driver, but due to structural influences, the higher the stiffness, the shorter the stiffness linear segment, resulting in an exponential increase in stiffness under high force conditions, which greatly affects comfort and stability. If the stiffness linear segment is increased to meet comfort requirements, high stiffness cannot be achieved, thereby reducing the handling of the vehicle. Utility Model Content

[0003] The utility model aims to provide a vehicle suspension damping bushing.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A vehicle suspension damping bushing comprises an outer tube, an inner core, an intermediate body and a reinforcement member, wherein the intermediate body is located between the outer tube and the inner core, the reinforcement member is located in the intermediate body and is integrally formed with the intermediate body, the reinforcement member is made of metal material, the reinforcement member is arc-shaped, a plurality of reinforcement members are provided, the plurality of reinforcement members are distributed along the circumference of the inner core, a gap is maintained between two adjacent reinforcement members, the gap forms a through hole corresponding to the position of the intermediate body, and the through hole extends along the axial direction of the intermediate body.

[0006] In some embodiments, the through hole includes a first section, a second section, and a third section, and the first section, the second section, and the third section are arranged in sequence along the radial direction of the intermediate body, the first section is close to the outer tube, the third section is close to the inner core, the length of the first section is greater than the lengths of the second section and the third section, and the length of the second section is less than the length of the third section.

[0007] In some embodiments, a side of the first section away from the third section is recessed in a direction away from the outer tube; a side of the third section away from the first section is recessed in a direction close to the inner core.

[0008] In some embodiments, the through hole is a symmetrical structure.

[0009] In some embodiments, the inner core is provided with a groove recessed toward the center thereof, and the groove is opposite to the through hole.

[0010] In some embodiments, four reinforcement members are provided, and the four reinforcement members are evenly distributed along the circumference of the inner core.

[0011] In some embodiments, there are four through holes, which are evenly distributed along the circumference of the inner core, and one reinforcement member is disposed between two adjacent through holes.

[0012] In some embodiments, opposite ends of the reinforcement member extend out of opposite ends of the outer tube, respectively, and opposite ends of the inner core extend out of opposite ends of the reinforcement member, respectively.

[0013] In some embodiments, the reinforcement is made of aluminum alloy.

[0014] In some embodiments, the thickness of the reinforcement member is 10-30% of the thickness of the intermediate body.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] The automobile suspension damping bushing provided by the utility model is provided with reinforcement pieces to limit the flow of rubber and increase the rigidity; multiple reinforcement pieces are provided to meet the high rigidity requirements in all directions and increase the rigidity linear segment at the same time, thereby maintaining the high rigidity linear stability while better transmitting the movement of the whole vehicle, so that the whole vehicle meets the control requirements while the comfort is not reduced; through holes are provided to ensure the requirement of long linear segments, taking into account the requirements of control and comfort for the bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 A structural diagram of the automobile suspension damping bushing provided by the utility model from a first perspective;

[0018] Attached Figure 2 A structural diagram of the automobile suspension damping bushing provided by the utility model from a second perspective;

[0019] Attached Figure 3 A top sectional view of the automobile suspension damping bushing provided by the utility model;

[0020] Attached Figure 4 A front cross-sectional view of the automobile suspension damping bushing provided by the utility model;

[0021] Attached Figure 5 A structural diagram of the automobile suspension damping bushing provided by the utility model (without intermediate body);

[0022] Attached Figure 6 A structural diagram of the inner core of the automobile suspension damping bushing provided by the utility model;

[0023] Attached Figure 7 A top view of the inner core of the automobile suspension damping bushing provided by the utility model;

[0024] Attached Figure 8 An exploded view of the reinforcement member of the automobile suspension damping bushing provided by the utility model;

[0025] Attached Fig. 9 It is a structural diagram of the bushing of Comparative Example 1;

[0026] Attached Fig.10 It is a structural diagram of the bushing of Comparative Example 2;

[0027] Attached Fig.11 It is a structural diagram of the bushing of Comparative Example 3;

[0028] Attached Fig.12 It is a structural diagram of the bushing of Comparative Example 4;

[0029] Attached Fig.13 is a test result diagram of the bushing of the embodiment;

[0030] Attached Fig.14 This is a test result diagram of the bushing of Comparative Example 1;

[0031] Attached Fig.15 This is a test result diagram of the bushing of Comparative Example 2;

[0032] Attached Fig.16 This is a test result diagram of the bushing of Comparative Example 3;

[0033] Attached Fig.17 This is a test result diagram of the bushing of Comparative Example 4.

[0034] In the above attached figure:

[0035] 1-Outer tube;

[0036] 2-intermediate body, 21-through hole, 211-first section, 212-second section, 213-third section;

[0037] 3-inner core, 31-groove; 4-reinforcement member. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] See also Figures 1 to 8 The automobile suspension damping bushing shown in the figure comprises an outer tube 1, an inner core 3, an intermediate body 2, and a reinforcing member 4. The outer tube 1 is in the shape of a hollow tube; a circular central hole is opened in the middle of the inner core 3, and the central hole passes through the upper and lower ends of the inner core 3; the intermediate body 2 is located between the outer tube 1 and the inner core 3, the outer tube 1 and the inner core 3 are made of metal material, and the intermediate body 2 is made of rubber material, preferably natural rubber with high hardness and high damping formula, so as to better absorb impact and vibration in the vertical direction; the reinforcing member 4 is located in the intermediate body 2 and is integrally formed with the intermediate body 2 (The reinforcement 4 is wrapped in the intermediate body 2, and the reinforcement 4 cannot be seen from the outside), the reinforcement 4 is made of metal material, the reinforcement 4 is arc-shaped, and the reinforcement 4 is recessed toward the outer tube 1; there are multiple reinforcements 4, and multiple reinforcements 4 are distributed along the circumference of the inner core 3, and a gap is maintained between two adjacent reinforcements 4, and the gap corresponds to the position of the intermediate body 2 to form a through hole 21 (that is, there is a through hole 21 between two adjacent reinforcements 4), and the through hole 21 extends along the axial direction of the intermediate body 2, that is, the through hole 21 passes through the upper and lower ends of the intermediate body 2. The reinforcement 4 can limit the flow of rubber and increase the rigidity; multiple reinforcements 4 are provided to meet the high rigidity requirements in all directions, and at the same time, the rigidity linear segment can be increased, while better transmitting the movement of the whole vehicle, maintaining high rigidity linear stability, so that the whole vehicle meets the control requirements while the comfort is not reduced; the through hole 21 is provided to ensure the requirement of a long linear segment, taking into account the requirements of control and comfort for the bushing.

[0042] In this example, the through hole 21 includes a first section 211, a second section 212 and a third section 213, which are sequentially arranged along the radial direction of the intermediate body, the first section 211 is close to the outer tube 1, the third section 213 is close to the inner core 3, the second section 212 is located between the first section 211 and the third section 213, and the second section 212 corresponds to the space between two adjacent reinforcement members 4. The length of the first section 211 is greater than the length of the second section 212 and the third section 213, and the length of the second section 212 is less than the length of the third section 213. At this time, one end of the first section 211 ( Figure 3 The other end of the first section 211 (indicated by a in the figure) extends to a position opposite to a reinforcing member 4. Figure 3 b in the figure) extends to another reinforcing member 4 adjacent to the reinforcing member 4; one end of the third section 213 ( Figure 3 m in the figure) extends to a position opposite to a reinforcing member 4, and the other end of the third section 213 ( Figure 3 The first segment 211 (indicated by n) extends to another reinforcement member 4 adjacent to the reinforcement member 4, that is, the opposite ends of the first segment 211 extend out of the opposite ends of the second segment 212 respectively, and the opposite ends of the third segment 213 extend out of the opposite ends of the second segment 212 respectively, and the opposite ends of the first segment 211 correspond to the opposite ends of the third segment 213 respectively.

[0043] Preferably, the side of the first section 211 away from the third section 213 is recessed away from the outer tube 1; the side of the third section 213 away from the first section 211 is recessed towards the inner core 3, which can better resist impact. At this time, the arc length of the first section 211 is greater than the arc lengths of the second section 212 and the third section 213, and the arc length of the second section 212 is less than the arc length of the third section 213.

[0044] In a preferred embodiment, a groove 31 is provided on the inner core 3 and is recessed toward the center thereof. The groove 31 is opposite to the third section 213 of the through hole 21, and the side of the third section 213 away from the first section 211 is recessed toward the inner core 3. The advantage of such a setting is that the bushing produces more relative linear redundancy after being impacted, and the overall force feedback is smoother.

[0045] In a preferred embodiment, the through hole 21 is a symmetrical structure, and the center line of symmetry is a radial line of the outer tube 1.

[0046] In this example, multiple reinforcement members 4 are evenly distributed along the circumference of the inner core 3, that is, the circle formed by the connecting line of multiple reinforcement members 4 is concentrically arranged with the inner core 3 and the outer tube 1. In a preferred embodiment, four reinforcement members 4 are arranged, and the four reinforcement members 4 are evenly distributed along the circumference of the inner core 3, wherein two reinforcement members 4 are arranged opposite to each other. Four through holes 21 are arranged, and the four through holes 21 are evenly distributed along the circumference of the inner core 3, and a reinforcement member 4 is arranged between two adjacent through holes 21.

[0047] See also Figure 1 The opposite ends of the inner core 3 extend out of the opposite ends of the outer tube 1 respectively, the opposite ends of the reinforcement 4 extend out of the opposite ends of the outer tube 1 respectively, and the opposite ends of the inner core 3 extend out of the opposite ends of the reinforcement 4 respectively.

[0048] The outer peripheries of both ends of the inner core 3 extending out of the outer tube 1 are covered with a rubber body, and the inner periphery of the outer tube 1 is provided with a rubber body. Except for the outer peripheries of both ends of the inner core 3 extending out of the outer tube 1 covered with a rubber body, and the inner periphery of the outer tube 1 is provided with a rubber body, the thickness of other parts of the intermediate body 2 (along the axial direction of the intermediate body 2) is smaller than the thickness of the outer tube 1 (along the axial direction of the outer tube 1).

[0049] In some embodiments, the reinforcement member 4 is preferably made of aluminum alloy. The thickness of the reinforcement member 4 is 10-30% of the thickness of the intermediate body 2.

[0050] In some embodiments, the distance between the reinforcement 4 (the side of the reinforcement 4 close to the inner core 3) and the outer periphery of the inner core 3 is smaller than the distance between the reinforcement 4 (the side of the reinforcement 4 close to the inner periphery of the outer tube 1) and the inner periphery of the outer tube 1.

[0051] The outer tube 1 of this example is preferably made of high-strength aluminum alloy to meet the requirements of the pressing force and has good corrosion resistance; the inner core 3 is made of high-strength aluminum alloy to meet the requirements of the crushing force; the reinforcement 4 is made of high-strength aluminum alloy to limit the rubber flow of the intermediate body 2 and increase the rigidity; the intermediate body 2 is provided with a through hole 21, and the required linear segment is obtained in combination with the hardness of the rubber. The outer tube 1 is formed by injection vulcanization of the outer tube 1, the rubber 2, the inner core 3, and the reinforcement 4.

[0052] An embodiment and several comparative examples are provided below.

[0053] Example

[0054] This example provides a bushing, including an outer tube 1, an inner core 3, an intermediate body 2, and a reinforcement 4. The intermediate body 2 is located between the outer tube 1 and the inner core 3, the reinforcement 4 is located in the intermediate body 2 and is integrally formed with the intermediate body 2, the reinforcement 4 is made of metal material, the reinforcement 4 is arc-shaped, four reinforcements 4 are arranged, the four reinforcements 4 are distributed along the circumference of the inner core 3, and a gap is maintained between two adjacent reinforcements 4. The gap corresponds to the position of the intermediate body 2 to form a through hole 21, and the through hole 21 extends along the axial direction of the intermediate body 2.

[0055] The through hole 21 includes a first section 211, a second section 212 and a third section 213, which are arranged in sequence along the radial direction of the intermediate body. The first section 211 is close to the outer tube 1, and the third section 213 is close to the inner core 3. The length of the first section 211 is greater than the lengths of the second section 212 and the third section 213, and the length of the second section 212 is less than the length of the third section 213. The side of the first section 211 away from the third section 213 is recessed in a direction away from the outer tube 1; the side of the third section 213 away from the first section 211 is recessed in a direction close to the inner core 3. A groove 31 recessed toward the center thereof is provided on the inner core 3, and the groove 31 is opposite to the through hole 21.

[0056] Comparative Example 1

[0057] See also Fig. 9 , which is different from the embodiment in that no reinforcement is provided, and openings are provided on the outer tube and the intermediate body ( Fig. 9 The opening (indicated by e) passes through one side of the outer tube and the intermediate body, and the opening is arranged along the axial direction of the outer tube.

[0058] Comparative Example 2

[0059] See also Fig.10 , which is different from the embodiment in that no reinforcement is provided, and a protrusion ( Fig.10 The intermediate body is provided with a through hole ( Fig.10 (refer to f in Chinese).

[0060] Comparative Example 3

[0061] See also Fig.11 , which is different from the embodiment in that a reinforcement member is provided, and a protrusion protruding toward the outer tube is provided on the outer periphery of the inner tube ( Fig.11 The intermediate body is provided with a through hole ( Fig.11 h in Chinese).

[0062] Comparative Example 4

[0063] See also Fig.12 , which is different from the embodiment in that: a reinforcement member is provided, no protrusion is provided on the outer periphery of the inner tube, the inner tube is a hollow tube (the outer periphery of the inner tube is a smooth circle), and a through hole is provided on the intermediate body ( Fig.12 The through hole is located between two adjacent reinforcement members.

[0064] Static stiffness test was performed on the bushings of the embodiment and comparative examples 1-4, and the stiffness curves obtained are shown in the figure below: Figure 13-17 As shown, the horizontal axis is displacement, one vertical axis is force, and the other vertical axis is stiffness. It can be seen from the curve graph that the dotted line of this embodiment has small fluctuations on both sides and is more stable; the dotted line of comparative examples 1-4 has large fluctuations on both sides and is unstable.

[0065] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A vehicle suspension damping bushing, characterized in that: It includes an outer tube, an inner core, an intermediate body, and a reinforcement piece. The intermediate body is located between the outer tube and the inner core. The reinforcement piece is located in the intermediate body and is integrally formed with the intermediate body. The reinforcement piece is made of metal material and is arc-shaped. There are multiple reinforcement pieces, and the multiple reinforcement pieces are distributed along the circumference of the inner core. A gap is maintained between two adjacent reinforcement pieces. The gap forms a through hole corresponding to the intermediate body portion, and the through hole extends along the axial direction of the intermediate body.

2. The automobile suspension damping bushing according to claim 1, characterized in that: The through hole includes a first section, a second section and a third section, and the first section, the second section and the third section are arranged in sequence along the radial direction of the intermediate body, the first section is close to the outer tube, the third section is close to the inner core, the length of the first section is greater than the lengths of the second section and the third section, and the length of the second section is less than the length of the third section.

3. The automobile suspension damping bushing according to claim 2, characterized in that: The side of the first section away from the third section is recessed in a direction away from the outer tube; the side of the third section away from the first section is recessed in a direction close to the inner core.

4. The automobile suspension damping bushing according to claim 1, characterized in that: The through hole is a symmetrical structure.

5. The automobile suspension damping bushing according to claim 1, characterized in that: The inner core is provided with a groove which is recessed toward the center thereof, and the groove is opposite to the through hole.

6. The automobile suspension damping bushing according to claim 1, characterized in that: There are four reinforcing members, and the four reinforcing members are evenly distributed along the circumference of the inner core.

7. The automobile suspension damping bushing according to claim 1, characterized in that: There are four through holes, which are evenly distributed along the circumference of the inner core, and one reinforcement piece is arranged between two adjacent through holes.

8. The automobile suspension damping bushing according to claim 1, characterized in that: The opposite ends of the reinforcement member extend out of the opposite ends of the outer tube respectively, and the opposite ends of the inner core extend out of the opposite ends of the reinforcement member respectively.

9. The automobile suspension damping bushing according to claim 1, characterized in that: The reinforcement is made of aluminum alloy.

10. The automobile suspension damping bushing according to claim 1, characterized in that: The thickness of the reinforcing member is 10-30% of the thickness of the intermediate body.

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