Subframe bushing

Abstract

The application discloses a sub-frame bushing and belongs to the technical field of automobile parts, which comprises an outer shell and an inner core, the outer shell is in a hollow cylindrical structure, the inner core is in a tubular structure as a whole, the inner core is connected with the outer shell in a sleeving manner, a rubber part is arranged between the outer shell and the inner core, the rubber part is internally provided with a mounting cavity matched with the inner core, the inner core is embedded in the mounting cavity to be connected with the rubber part, the two ends of the inner core are extended outward in the axial direction, one end of the inner core is extended out of the outer shell and is provided with a first gasket, the other end of the inner core is extended out of the outer shell and is provided with a second gasket, the overall performance of the bushing is further optimized, the bolt connection contact area of the two ends of the inner core is increased, and the reliability and stability of the connection are improved, so that the driving safety and reliability of the vehicle are improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a subframe bushing. Background Technology

[0002] With the development of the automotive industry, people have increasingly higher demands for the comfort and handling stability of automobiles. As a crucial component of the automotive chassis system, the way the subframe connects to the body significantly impacts vehicle performance. Traditional rigid connections result in a large amount of vibration and noise being directly transmitted to the body, severely affecting the driving experience. Therefore, subframe bushings have emerged, typically consisting of an outer shell and an inner core. Their elastic properties buffer and isolate vibrations, thereby improving vehicle performance. For example, Chinese utility model patent CN215752646U discloses a subframe bushing structure that integrates a cover plate and a subframe bushing body. The structure includes a subframe bushing body and a cover plate. The inner wall of the metal core of the subframe bushing body is provided with an embedding groove. There are two embedding grooves arranged symmetrically on the left and right sides and the embedding grooves extend along the axial direction of the subframe bushing body. The cover plate is located below the subframe bushing body and has flanges around its perimeter. A hole is opened in the center of the cover plate, and there are upward protruding lugs on both sides of the hole. The lugs are connected to the embedding grooves of the subframe bushing body. The cover plate is embedded in the subframe bushing body through the lugs and the embedding grooves. The cover plate and the subframe bushing body are integrated into one piece. A bolt is screwed into the bottom of the cover plate. The subframe bushing body, the cover plate, and the bolts are connected as an integrated structure. In the aforementioned solution, the cover plate and the subframe bushing body are supplied separately. They need to be bolted to the vehicle body on the chassis assembly line. This separate assembly method not only increases the number of steps for assembly workers but also prolongs assembly time, affecting production rhythm and reducing production efficiency. On the other hand, in traditional bushings, the inner core's overall structure is formed in one piece by aluminum die casting. The shape and size of its two ends are limited by the mold design, making it difficult to achieve a large bolt connection contact area. This is mainly because, during the die casting process, to ensure the integrity and strength of the inner core, a certain structural space needs to be reserved at both ends of the inner core for mold demolding. This results in a relatively small usable connection area at both ends of the inner core. Due to the small bolt connection contact area, the connection strength between the bolt and the inner core may be affected during use, especially under heavy loads or vibrations, easily leading to bolt loosening or connection failure between the inner core and the bolt. This, in turn, affects the normal operation of the bushing and reduces the vehicle's driving safety and reliability. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a subframe bushing that further optimizes the overall performance of the bushing by adding a first washer and a second washer to both ends of the inner core, increases the contact area of ​​the bolt connection at both ends of the inner core, and improves the reliability and stability of the connection, thereby improving the driving safety and reliability of the vehicle.

[0004] The technical solution adopted in this application is as follows: a subframe bushing, comprising an outer shell and an inner core, wherein the outer shell is a hollow cylindrical structure, and the inner core is an integral tubular structure, wherein the inner core and the outer shell are fitted together, and a rubber component is installed between the outer shell and the inner core, wherein the rubber component has an installation cavity adapted to the inner core, and the inner core is embedded in the installation cavity to connect with the rubber component, wherein both ends of the inner core extend outward along the axial direction, one end of the inner core protrudes relative to the outer shell and is fitted with a first washer, and the other end of the inner core protrudes relative to the outer shell and is fitted with a second washer.

[0005] Compared with the prior art, the advantages of this application are as follows: the outer shell has a hollow cylindrical structure, which serves as external support and protection; the inner core has an overall tubular structure, which is fitted and connected to the outer shell, serving as internal support and load transfer; the rubber component is installed between the outer shell and the inner core, which serves as vibration isolation and buffer, effectively absorbing vibration and impact from the subframe and reducing its transmission to the vehicle body, thereby improving vehicle comfort; the outer shell, rubber component, and inner core form an embedded connection, ensuring the overall structural strength and stability of the bushing, and being able to withstand certain loads and torques; in this application, a first washer and a second washer are added, and both ends of the inner core extend outward along the axial direction, with the first washer installed at one end and the second washer installed at the other end. The addition of the first and second washers increases the contact area of ​​the bolt connection at both ends of the inner core, improving the reliability and stability of the connection. Compared with the traditional connection method, this structure can better ensure the connection strength between the inner core and the vehicle body or other components, preventing connection failure due to bolt loosening, thereby improving vehicle safety, and may also provide a certain degree of protection for the inner core, preventing damage to the inner core during use.

[0006] In some embodiments of this application, one end of the inner core is provided with a first annular protrusion adapted to the first washer, and the first washer is fitted onto the first annular protrusion. In this application, the first washer is connected to the inner core by being fitted onto the first annular protrusion. The connection method is simple and reliable. The first annular protrusion provides stable support and positioning for the first washer, preventing displacement or loosening of the first washer during use, thus improving installation stability. The cooperation between the first annular protrusion and the first washer not only increases the contact area of ​​the bolt connection but also improves the stability of the first washer through mechanical positioning, enabling the first washer to better withstand the bolt preload.

[0007] In some embodiments of this application, the other end of the inner core is provided with a second annular protrusion adapted to the second washer, and the second washer is fitted onto the second annular protrusion. In this application, the second washer is connected to the inner core by being fitted onto the second annular protrusion. The connection method is simple and reliable. The second annular protrusion provides stable support and positioning for the second washer, preventing displacement or loosening of the second washer during use, thus improving installation stability. The cooperation between the second annular protrusion and the second washer not only increases the contact area of ​​the bolt connection but also improves the stability of the second washer through mechanical positioning, enabling the second washer to better withstand the bolt preload.

[0008] In some embodiments of this application, one end of the inner core is press-fitted to a first washer to fix the first washer to the inner core, and the other end of the inner core is press-fitted to a second washer to fix the second washer to the inner core. In this application, press-fitting is a common connection method in mechanical structures. By applying pressure, a tight mechanical engagement is formed between the connecting parts and the connected parts, such as the first washer and one end of the inner core, and the second washer and the other end of the inner core, thereby achieving fixation. This connection method does not require additional fasteners, thus making the structure more compact and saving space. Furthermore, press-fitting is a rapid assembly method, typically completing the assembly of a connection point within seconds, improving production efficiency and reducing production costs. This connection method effectively prevents loosening due to vibration, impact, or temperature changes, resulting in higher connection strength, the ability to withstand larger loads and impacts, and improved bushing service life and reliability.

[0009] In some embodiments of this application, the inner wall of the outer casing is provided with a first positioning protrusion, and the outer wall of the rubber component is provided with a first positioning groove adapted to the first positioning protrusion. The first positioning protrusion and the first positioning groove are connected to position the rubber component within the outer casing. In this application, through the cooperation of the first positioning protrusion and the first positioning groove, the rubber component can be accurately installed within the outer casing, ensuring its positional accuracy. This cooperation not only serves a positioning function but also, to a certain extent, fixes the rubber component, preventing displacement or loosening during use, thus improving the reliability and durability of the bushing and making it suitable for use under high vibration and high load conditions.

[0010] In some embodiments of this application, the outer wall of the inner core is provided with a second positioning protrusion, and the mounting cavity is provided with a second positioning groove adapted to the second positioning protrusion. The second positioning protrusion and the second positioning groove are connected to position the inner core within the rubber component. In this application, through the cooperation of the second positioning protrusion and the second positioning groove, the inner core can be accurately installed within the mounting cavity of the rubber component, ensuring its positional accuracy. This cooperation not only serves a positioning function but also, to a certain extent, fixes the inner core, preventing displacement or loosening during use, thus improving the reliability and durability of the bushing and making it suitable for use under high vibration and high load conditions.

[0011] In some embodiments of this application, the mounting cavity has a first opening and a second opening. The size of the first opening is larger than the size of the second opening. The first opening is for one end of the inner core to protrude, and the second opening is for the other end of the inner core to protrude. A limiting seat is installed at the first opening to confine the inner core within the mounting cavity. In this application, the two openings correspond to the two ends of the inner core, allowing the inner core to protrude from the mounting cavity of the rubber part to achieve connection with the gasket. The limiting seat confines the inner core within the mounting cavity, preventing axial movement or detachment during use, ensuring the stability and reliability of the inner core within the mounting cavity, and reducing the risk of loosening due to vibration or impact. The fixing function of the limiting seat not only provides convenience during assembly but also maintains the stability of the inner core during long-term use, reducing the risk of bushing failure due to inner core loosening.

[0012] In some embodiments of this application, the limiting seat is provided with a first through hole for one end of the inner core to extend out, and one end of the inner core passes through the first through hole to connect to the first washer. In this application, the size of the first through hole needs to be adapted to the outer diameter of one end of the inner core, ensuring that one end of the inner core can pass through smoothly while ensuring the reliability of the limiting. The limiting seat limits the inner core through the first through hole, ensuring the stability of the inner core's position within the rubber part and reducing the risk of inner core displacement due to vibration or impact. After one end of the inner core passes through the first through hole, it connects to the first washer, further enhancing the connection stability between the inner core and the first washer, ensuring reliability under high load and high vibration conditions. The design of the limiting seat makes the installation position of the inner core more precise and reduces assembly errors.

[0013] In some embodiments of this application, the inner core comprises a plastic layer and an aluminum tube layer, which are integrally injection molded. In this application, the plastic layer and aluminum tube layer are tightly bonded to form a robust and lightweight inner core. The use of the plastic layer reduces the overall weight of the inner core and also provides a certain degree of elasticity, enabling it to absorb and buffer vibrations to some extent. The aluminum tube layer provides high strength and rigidity, ensuring that the inner core can withstand large loads and torques, meeting the performance requirements of automotive parts. This results in the inner core possessing not only high strength and rigidity but also a certain degree of elasticity and shock absorption. The tight bonding of the plastic layer and aluminum tube layer through injection molding reduces the risk of failure caused by material delamination or weak connections in traditional structures. Integral injection molding reduces multiple steps in traditional manufacturing processes, such as welding and riveting, lowering manufacturing costs and production time, making it suitable for mass production and improving production efficiency.

[0014] In some embodiments of this application, both the first and second washers are aluminum die-cast parts. In this application, aluminum die-cast parts possess high strength and rigidity, enabling them to withstand large loads and meet the performance requirements of automotive parts. Using aluminum die-cast washers can significantly reduce the overall weight of the bushing. Aluminum has excellent corrosion resistance, maintaining stable performance under harsh environmental conditions and extending the service life of the washers. The high surface hardness of aluminum die-cast parts provides a certain degree of wear resistance, reducing wear during long-term use. The aluminum die-casting process can produce parts with complex shapes and precise dimensions, ensuring the consistency of the washers' size and shape. Designing the first and second washers as aluminum die-cast parts not only achieves a combination of high strength and lightweight but also possesses good mechanical and heat dissipation properties, improving the overall performance and reliability of the bushing while reducing manufacturing costs.

[0015] In some embodiments of this application, the outer wall of the outer casing is provided with multiple inwardly recessed strip grooves, and several reinforcing ribs are provided within the strip grooves. In this application, by providing inwardly recessed strip grooves on the outer wall of the outer casing, the amount of material used is reduced, thereby reducing the weight of the outer casing. The reinforcing ribs provided within the strip grooves can significantly enhance the structural strength and rigidity of the outer casing. Under high load and high vibration conditions, the reinforcing ribs can effectively prevent the outer casing from deforming or being damaged, thereby improving the overall reliability of the bushing.

[0016] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0017] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a subframe bushing according to this application;

[0019] Figure 2 This is an exploded structural diagram of a subframe bushing according to this application;

[0020] Figure 3 This is a cross-sectional schematic diagram of a subframe bushing according to this application;

[0021] Figure 4 This is a three-dimensional structural diagram of the inner core in this application;

[0022] Figure 5 This is a cross-sectional view of the rubber component in this application.

[0023] The specific reference numerals in the attached drawings are explained as follows: 1. Outer shell; 11. First positioning protrusion; 12. Strip groove; 13. Reinforcing rib; 2. Inner core; 21. First annular protrusion; 22. Second annular protrusion; 23. Second positioning protrusion; 24. Plastic layer; 25. Aluminum tube layer; 3. Rubber component; 31. Mounting cavity; 311. Second positioning groove; 312. First opening; 313. Second opening; 32. First positioning groove; 4. First washer; 5. Second washer; 6. Limiting seat; 61. First through hole. Detailed Implementation

[0024] The present application will now be described in detail with reference to the accompanying drawings.

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] A subframe bushing, embodiment one as follows Figures 1 to 4As shown: It includes an outer shell 1 and an inner core 2. The outer shell 1 has a hollow cylindrical structure, and the inner core 2 has an overall tubular structure. The inner core 2 is fitted and connected to the outer shell 1. A rubber component 3 is installed between the outer shell 1 and the inner core 2. The rubber component 3 has a mounting cavity 31 that is adapted to the inner core 2. The inner core 2 is embedded in the mounting cavity 31 to connect with the rubber component 3. The hollow cylindrical structure of the outer shell 1 plays the role of external support and protection. The overall tubular structure of the inner core 2 is fitted and connected to the outer shell 1, playing the role of internal support and load transmission. The rubber component 3 is installed between the outer shell 1 and the inner core 2, playing the role of vibration isolation and buffering. It can effectively absorb the vibration and impact from the subframe and reduce its transmission to the vehicle body, thereby improving the comfort of the vehicle. The outer shell 1, the rubber component 3 and the inner core 2 form an embedded connection, which ensures the overall structural strength and stability of the bushing and can withstand a certain load and torque.

[0027] Both ends of the inner core 2 extend outward along the axial direction. One end of the inner core 2 protrudes relative to the outer shell 1 and is fitted with a first washer 4, while the other end of the inner core 2 protrudes relative to the outer shell 1 and is fitted with a second washer 5. In this application, the addition of a first washer 4 and a second washer 5, along with the arrangement of both ends of the inner core 2 extending outward along the axial direction, with a first washer 4 installed at one end and a second washer 5 installed at the other, increases the contact area of ​​the bolt connection at both ends of the inner core 2, improving the reliability and stability of the connection. Compared to traditional connection methods, this structure can better ensure the connection strength between the inner core 2 and the vehicle body or other components, preventing connection failure due to bolt loosening or other reasons, thereby improving vehicle safety. It may also provide some protection for the inner core 2, preventing damage during use.

[0028] More specifically, such as Figure 2 As shown, one end of the inner core 2 is provided with a first annular protrusion 21 that is adapted to the first washer 4. The first washer 4 is fitted onto the first annular protrusion 21. The first washer 4 is connected to the inner core 2 by fitting onto the first annular protrusion 21. The connection method is simple and reliable. The first annular protrusion 21 provides stable support and positioning for the first washer 4, preventing the first washer 4 from shifting or loosening during use, thus improving installation stability. The cooperation between the first annular protrusion 21 and the first washer 4 not only increases the contact area of ​​the bolt connection, but also improves the stability of the first washer 4 through mechanical positioning, enabling the first washer 4 to better withstand the bolt preload.

[0029] More specifically, such as Figure 4As shown, the other end of the inner core 2 is provided with a second annular protrusion 22 that is adapted to the second washer 5. The second washer 5 is fitted onto the second annular protrusion 22. The second washer 5 is connected to the inner core 2 by fitting onto the second annular protrusion 22. The connection method is simple and reliable. The second annular protrusion 22 provides stable support and positioning for the second washer 5, preventing the second washer 5 from shifting or loosening during use, thus improving installation stability. The cooperation between the second annular protrusion 22 and the second washer 5 not only increases the contact area of ​​the bolt connection, but also improves the stability of the second washer 5 through mechanical positioning, enabling the second washer 5 to better withstand the bolt preload.

[0030] More specifically, one end of the inner core 2 is press-fitted to the first washer 4 to fix the first washer 4 onto the inner core 2, and the other end of the inner core 2 is press-fitted to the second washer 5 to fix the second washer 5 onto the inner core 2. Press-fitting is a common connection method in mechanical structures. By applying pressure, a tight mechanical engagement is formed between the connecting parts and the connected parts, such as the first washer 4 and one end of the inner core 2, and the second washer 5 and the other end of the inner core 2, thereby achieving fixation. This connection method does not require additional fasteners, so the structure is more compact and saves space. Moreover, press-fitting is a fast assembly process, which can usually complete the assembly of a connection point in a few seconds, improving production efficiency and reducing production costs. This connection method can effectively prevent loosening of the connection due to vibration, impact or temperature changes, and has higher connection strength, which can withstand greater loads and impacts, thus improving the service life and reliability of the bushing.

[0031] Example 2, as Figures 1 to 5 As shown, the inner wall of the outer shell 1 is provided with a first positioning protrusion 11, and the outer wall of the rubber part 3 is provided with a first positioning groove 32 that is adapted to the first positioning protrusion 11. The first positioning protrusion 11 and the first positioning groove 32 are connected to position the rubber part 3 inside the outer shell 1. Through the cooperation of the first positioning protrusion 11 and the first positioning groove 32, the rubber part 3 can be accurately installed inside the outer shell 1 to ensure the accuracy of its position. This cooperation not only plays a positioning role, but also fixes the rubber part 3 to a certain extent to prevent it from shifting or loosening during use, thereby improving the reliability and durability of the bushing and making it suitable for use under high vibration and high load conditions.

[0032] More specifically, such as Figure 4 and Figure 5As shown, the outer wall of the inner core 2 is provided with a second positioning protrusion 23, and the mounting cavity 31 is provided with a second positioning groove 311 that is adapted to the second positioning protrusion 23. The second positioning protrusion 23 and the second positioning groove 311 are connected to position the inner core 2 in the rubber part 3. Through the cooperation of the second positioning protrusion 23 and the second positioning groove 311, the inner core 2 can be accurately installed in the mounting cavity 31 of the rubber part 3, ensuring the accuracy of its position. This cooperation not only plays a positioning role, but also fixes the inner core 2 to a certain extent, preventing it from shifting or loosening during use, improving the reliability and durability of the bushing, and making it suitable for use under high vibration and high load conditions.

[0033] More specifically, such as Figure 5 As shown, the mounting cavity 31 has a first opening 312 and a second opening 313. The size of the first opening 312 is larger than the size of the second opening 313. The first opening 312 is used for one end of the inner core 2 to extend out, and the second opening 313 is used for the other end of the inner core 2 to extend out. A limiting seat 6 is installed at the first opening 312. The limiting seat 6 is used to limit the inner core 2 within the mounting cavity 31. The two openings correspond to the two ends of the inner core 2, allowing the inner core 2 to extend out of the mounting cavity 31 of the rubber part 3 to achieve connection with the gasket. The limiting seat 6 is used to limit the inner core 2 within the mounting cavity 31 to prevent the inner core 2 from axially moving or falling off during use, ensuring the stability and reliability of the inner core 2 within the mounting cavity 31, and reducing the risk of loosening due to vibration or impact. The fixing function of the limiting seat 6 not only provides convenience during assembly, but also maintains the stability of the inner core 2 during long-term use, reducing the risk of bushing failure due to loosening of the inner core 2.

[0034] More specifically, such as Figure 2 As shown, the limiting seat 6 has a first through hole 61 for one end of the inner core 2 to extend out. One end of the inner core 2 passes through the first through hole 61 to connect to the first washer 4. The size of the first through hole 61 needs to be adapted to the outer diameter of one end of the inner core 2. It is necessary to ensure that one end of the inner core 2 can pass through smoothly and to ensure the reliability of the limiting. The limiting seat 6 limits the inner core 2 through the first through hole 61 to ensure the stability of the inner core 2 in the rubber part 3 and reduce the risk of displacement of the inner core 2 due to vibration or impact. After one end of the inner core 2 passes through the first through hole 61, it connects to the first washer 4, which further enhances the connection stability between the inner core 2 and the first washer 4 and ensures reliability under high load and high vibration conditions. The design of the limiting seat 6 makes the installation position of the inner core 2 more precise and reduces assembly errors.

[0035] The rest of the contents of Example 2 are the same as those of Example 1.

[0036] Example 3, as Figures 1 to 5As shown, the inner core 2 has a plastic layer 24 and an aluminum tube layer 25, which are integrally injection molded. The plastic layer 24 and the aluminum tube layer 25 are tightly bonded together to form a strong and lightweight inner core 2. The use of the plastic layer 24 reduces the overall weight of the inner core 2. The plastic layer 24 also has a certain degree of elasticity, which can absorb and buffer vibrations to a certain extent. The aluminum tube layer 25 provides high strength and rigidity, ensuring that the inner core 2 can withstand large loads and torques, meeting the performance requirements of automotive parts. This makes the inner core 2 not only have high strength and rigidity, but also have a certain degree of elasticity and shock absorption performance. The plastic layer 24 and the aluminum tube layer 25 are tightly bonded by injection molding, which reduces the risk of failure caused by material delamination or weak connection in traditional structures. Integral injection molding reduces multiple steps in traditional manufacturing processes, such as welding and riveting, reducing manufacturing costs and production time, making it suitable for mass production and improving production efficiency.

[0037] More specifically, both the first washer 4 and the second washer 5 are aluminum die-cast parts. Aluminum die-cast parts have high strength and rigidity, can withstand large loads, and meet the performance requirements of automotive parts. Using aluminum die-cast washers can significantly reduce the overall weight of the bushing. Aluminum has good corrosion resistance, can maintain stable performance under harsh environmental conditions, and extend the service life of the washer. Aluminum die-cast parts have high surface hardness and a certain degree of wear resistance, which can reduce wear during long-term use. The aluminum die-casting process can produce parts with complex shapes and precise dimensions, ensuring the consistency of the size and shape of the washer. Designing the first washer 4 and the second washer 5 as aluminum die-cast parts not only achieves a combination of high strength and lightweight, but also has good mechanical properties and heat dissipation performance, improving the overall performance and reliability of the bushing, while reducing manufacturing costs.

[0038] More specifically, such as Figure 1 As shown, the outer wall of the outer shell 1 is provided with a plurality of inwardly recessed strip grooves 12, and a plurality of reinforcing ribs 13 are provided in the strip grooves 12. By providing inwardly recessed strip grooves 12 on the outer wall of the outer shell 1, the amount of material used is reduced, thereby reducing the weight of the outer shell 1. The reinforcing ribs 13 provided in the strip grooves 12 can significantly enhance the structural strength and rigidity of the outer shell 1. Under high load and high vibration conditions, the reinforcing ribs 13 can effectively prevent the outer shell 1 from deforming or being damaged, thereby improving the overall reliability of the bushing.

[0039] The other contents of Example 3 are the same as those of Example 1 or Example 2.

[0040] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A subframe bushing, characterized in that, The device includes an outer shell (1) and an inner core (2). The outer shell (1) has a hollow cylindrical structure, and the inner core (2) has an overall tubular structure. The inner core (2) is fitted inside and outside the outer shell (1). A rubber component (3) is installed between the outer shell (1) and the inner core (2). The rubber component (3) has an installation cavity (31) that is adapted to the inner core (2). The inner core (2) is embedded in the installation cavity (31) to connect with the rubber component (3). Both ends of the inner core (2) extend outward along the axial direction. One end of the inner core (2) protrudes from the outer shell (1) and is fitted with a first washer (4). The other end of the inner core (2) protrudes from the outer shell (1) and is fitted with a second washer (5).

2. The subframe bushing according to claim 1, characterized in that, One end of the inner core (2) is provided with a first annular protrusion (21) that is adapted to the first washer (4), and the first washer (4) is fitted on the first annular protrusion (21). The other end of the inner core (2) is provided with a second annular protrusion (22) that is adapted to the second washer (5), and the second washer (5) is fitted on the second annular protrusion (22).

3. The subframe bushing according to claim 1, characterized in that, One end of the inner core (2) is riveted to the first washer (4) so ​​that the first washer (4) is fixed on the inner core (2), and the other end of the inner core (2) is riveted to the second washer (5) so that the second washer (5) is fixed on the inner core (2).

4. A subframe bushing according to claim 1, characterized in that, The inner wall of the outer shell (1) is provided with a first positioning protrusion (11), and the outer wall of the rubber part (3) is provided with a first positioning groove (32) that is adapted to the first positioning protrusion (11). The first positioning protrusion (11) and the first positioning groove (32) are connected to position the rubber part (3) inside the outer shell (1).

5. A subframe bushing according to claim 1, characterized in that, The outer wall of the inner core (2) is provided with a second positioning protrusion (23), and the mounting cavity (31) is provided with a second positioning groove (311) that is adapted to the second positioning protrusion (23). The second positioning protrusion (23) and the second positioning groove (311) are connected to position the inner core (2) in the rubber part (3).

6. A subframe bushing according to claim 1, characterized in that, The mounting cavity (31) is provided with a first opening (312) and a second opening (313). The size of the first opening (312) is larger than the size of the second opening (313). The first opening (312) is used for one end of the inner core (2) to extend out, and the second opening (313) is used for the other end of the inner core (2) to extend out. A limiting seat (6) is installed at the first opening (312). The limiting seat (6) is used to limit the inner core (2) to be located in the mounting cavity (31).

7. A subframe bushing according to claim 6, characterized in that, The limiting seat (6) is provided with a first through hole (61) for one end of the inner core (2) to extend out, and one end of the inner core (2) passes through the first through hole (61) to connect to the first washer (4).

8. A subframe bushing according to claim 1, characterized in that, The inner core (2) is provided with a plastic layer (24) and an aluminum tube layer (25), which are integrally injection molded.

9. A subframe bushing according to claim 1, characterized in that, The first washer (4) and the second washer (5) are both aluminum die-cast parts.

10. A subframe bushing according to claim 1, characterized in that, The outer wall of the outer shell (1) is provided with a plurality of inwardly recessed strip grooves (12), and a plurality of reinforcing ribs (13) are provided in the strip grooves (12).

Images