A flexible connecting sleeve for a bumper bushing

Abstract

This utility model discloses an elastic connecting sleeve for bumper bushings, comprising a core body. The core body has a guide groove on its outer surface, an inner sleeve layer is fitted onto the outer surface of the core body, a bearing base is provided on the side of the core body, a bearing is fixedly connected to the side of the bearing base, a sealing ring is fitted onto the surface of the bearing, a bearing through hole is provided on the side of the bearing, a support column is fixedly connected to the outer surface of the core body, a buffer pad layer is provided at one end of the support column, a wear-resistant layer is fitted onto the outer surface of the buffer pad layer, and a lubricating layer is fitted onto the outer surface of the wear-resistant layer. Through the synergistic effect of the multi-layer structure, not only is the stability of the bumper bushing connection, the flexibility of rotation, and the durability of use ensured, but it also effectively buffers impacts, reduces wear, and strengthens overall protection, significantly improving the comprehensive performance and service life of the bumper bushing.

Description

Technical Field

[0001] This utility model relates to the field of elastic technology, specifically to an elastic connecting sleeve for a bumper bushing. Background Technology

[0002] During vehicle operation, the bumper needs to absorb and mitigate external impacts to protect the vehicle body and occupants. Simultaneously, to improve ride comfort, it's essential to reduce vibration and noise during driving. The elastic connecting sleeve, a key component of the bumper bushing, plays a crucial role in cushioning, shock absorption, and noise reduction; therefore, its performance is vital to both vehicle safety and comfort.

[0003] Traditional automotive bushings are mostly made of rubber, and their shock absorption performance decreases after prolonged use. Furthermore, existing bushing structures have deficiencies in cushioning performance, often relying solely on the central rubber buffer layer for cushioning, resulting in poor performance and an inability to effectively mitigate road impacts. In addition, existing bushings also present problems during installation and use, such as excessive resistance when pressing in the metal outer tube, making it difficult to remove from the frame bushing after incorrect pressing, leading to a low tolerance for errors. Utility Model Content

[0004] The purpose of this invention is to provide an elastic connecting sleeve for bumper bushings, addressing the issues raised in the background section regarding the degradation of shock absorption in traditional automotive bushings made primarily of rubber over extended periods. Furthermore, existing bushing structures suffer from deficiencies in cushioning performance, relying primarily on a central rubber buffer layer for cushioning, resulting in poor performance and ineffective mitigation of road impacts. Additionally, existing bushings present challenges during installation and use, such as excessive resistance to pressing in the metal outer tube, making it difficult to detach from the frame sleeve after incorrect installation, leading to a low tolerance for errors.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elastic connecting sleeve for a bumper bushing, comprising a core, characterized in that: a guide groove is formed on the outer surface of the core; an inner sleeve layer is fitted onto the outer surface of the core; a bearing base is provided on the side of the core; a bearing is fixedly connected to the side of the bearing base; a sealing ring is fitted onto the surface of the bearing; a bearing through hole is formed on the side of the bearing; a support column is fixedly connected to the outer surface of the core; a buffer pad layer is provided at one end of the support column; a wear-resistant layer is fitted onto the outer surface of the buffer pad layer; a lubricating layer is fitted onto the outer surface of the wear-resistant layer; an outer sleeve layer is fitted onto the outer surface of the lubricating layer; a reinforcing rib layer is fitted onto the outer surface of the outer sleeve layer; a strip groove is formed on the outer surface of the reinforcing rib layer; a fixing ring is fixedly fitted onto the outer surface of the reinforcing rib layer; a fixing ring groove is formed on the surface of the fixing ring; a fixing screw hole is formed on the inner side of the fixing ring groove; and a fixing screw is screwed onto the inner side of the fixing screw hole.

[0006] Preferably, the outer surface of the core is provided with a guide groove, the outer side of the core is tightly fitted with the inner side of the inner sleeve layer, and the side of the core is fixedly connected to one side of the bearing base to form a basic support structure.

[0007] Preferably, the bearing surface is tightly fitted with the inner side of the sealing ring, one side of the bearing is fixedly connected to the other side of the bearing base, a bearing through hole is opened on the side of the bearing, and the outer side of the core is fixedly connected to one end of the support column, forming a rotation and support cooperation structure.

[0008] Preferably, one side of the buffer pad is fixedly connected to the other end of the support column, the outer side of the buffer pad is tightly fitted with the inner side of the wear-resistant layer, and the outer side of the wear-resistant layer is tightly fitted with the inner side of the lubrication layer, forming a buffer, wear-resistant and lubricating structure.

[0009] Preferably, the outer side of the lubricating layer is tightly fitted with the inner side of the outer jacket layer, the outer side of the outer jacket layer is tightly fitted with the inner side of the reinforcing rib layer, a strip groove is opened on the outer side of the reinforcing rib layer, and the outer side of the reinforcing rib layer is fixedly fitted with the inner side of the fixing ring, forming an outer protective and fixing base structure.

[0010] Preferably, the surface of the fixing ring is provided with a fixing ring groove, the inner side of the fixing ring groove is connected to the inner side of the fixing screw hole, and the inner side of the fixing screw hole is spirally connected to the outer side of the fixing screw to form an integral fixing structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This type of bumper bushing uses an elastic connecting sleeve. During daily use, the core serves as the fundamental structure. Guide grooves on its outer surface provide guidance for assembly and movement. A tightly fitted inner sleeve enhances the outer protection and stability of the core. Simultaneously, the side of the core is fixedly connected to one side of the bearing base, forming a basic support structure and providing an installation benchmark for subsequent components. A bearing is fixedly connected to the other side of the bearing base, enabling structural rotation. A tightly fitted sealing ring on the bearing surface prevents external impurities from entering the bearing and affecting its rotational performance. Bearing through holes on the side of the bearing can be used for auxiliary installation or heat dissipation. Furthermore, the support column fixedly connected to the outer side of the core cooperates with the bearing structure to form a rotational and supportive structure, ensuring the overall rotational flexibility and support reliability of the sleeve. A buffer pad fixedly connected to the other end of the support column absorbs vibrations and impacts generated during bumper operation. The wear-resistant layer tightly fitted to the outer side of the buffer pad reduces wear during structural movement, while the lubrication layer tightly fitted to the outer side of the wear-resistant layer reduces frictional resistance. Together, these three elements form a buffer, wear-resistant, and lubricating structure, improving the durability and smoothness of the sleeve. The outer layer tightly fitted to the outer side of the lubrication layer forms the outer basic protection, while the reinforcing rib layer tightly fitted to the outer side of the outer layer enhances the overall structural strength of the sleeve. The grooves on the outer side of the reinforcing rib layer reduce weight or aid in heat dissipation, and the fixing ring fixedly fitted to the outer side of the reinforcing rib layer constitutes the outer protection and fixing base structure. The fixing ring groove on the surface of the fixing ring provides installation space for the fixing screw hole. The fixing screw hole cooperates with the inner spiral-connected fixing screw to form an integrated fixing structure, stably fixing the entire elastic connecting sleeve to the corresponding position of the bumper bushing. This achieves coordinated work of all structures, meeting the connection, support, rotation, and protection requirements of the bumper bushing. Through the synergistic effect of the multi-layered structure, not only is the stability of the bumper bushing connection, the flexibility of rotation, and the durability of use ensured, but it also effectively buffers impacts, reduces wear, and strengthens overall protection, significantly improving the comprehensive performance and service life of the bumper bushing. Attached Figure Description

[0012] Figure 1 This is a side view of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a structural diagram of the shaft end of this utility model; Figure 4 This is a structural diagram of the fixing ring of this utility model.

[0013] In the diagram: 1. Core; 2. Guide groove; 3. Inner sleeve layer; 4. Bearing base; 5. Sealing ring; 6. Bearing; 7. Bearing through hole; 8. Support column; 9. Buffer pad layer; 10. Wear-resistant layer; 11. Lubricating layer; 12. Outer sleeve layer; 13. Reinforcing rib layer; 14. Strip groove; 15. Fixing ring; 16. Fixing ring groove; 17. Fixing screw hole; 18. Fixing screw. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0015] like Figure 1-4 As shown, this utility model provides a technical solution: an elastic connecting sleeve for a bumper bushing, including a core 1, a guide groove 2 on the outer surface of the core 1, an inner sleeve layer 3 fitted onto the outer side of the core 1, a bearing base 4 on the side of the core 1, the guide groove 2 on the outer surface of the core 1, the outer side of the core 1 and the inner side of the inner sleeve layer 3 being tightly fitted together, the side of the core 1 being fixedly connected to one side of the bearing base 4 to form a basic support structure, and a bearing 6 being fixedly connected to the side of the bearing base 4.

[0016] By setting guide grooves on the outside of the core, connecting the inner sleeve layer, and fixing it to the bearing base and bearing, a stable foundation support can be formed. At the same time, the guide grooves and bearings can be used to improve the guiding and rotational flexibility of the overall structure. Example 2

[0017] like Figure 1-4 As shown, this utility model provides a technical solution: an elastic connecting sleeve for a bumper bushing, including a core 1, a guide groove 2 on the outer surface of the core 1, an inner sleeve layer 3 fitted onto the outer surface of the core 1, a bearing base 4 on the side of the core 1, the guide groove 2 on the outer surface of the core 1, the outer surface of the core 1 tightly fitted with the inner side of the inner sleeve layer 3, the side of the core 1 fixedly connected to one side of the bearing base 4 to form a basic support structure, a bearing 6 fixedly connected to the side of the bearing base 4, a sealing ring 5 fitted onto the surface of the bearing 6, a bearing through hole 7 on the side of the bearing 6, a support column 8 fixedly connected to the outer surface of the core 1, and the surface of the bearing 6 being... The inner side of the sealing ring 5 is tightly fitted, one side of the bearing 6 is fixedly connected to the other side of the bearing base 4, the side of the bearing 6 is provided with a bearing through hole 7, the outer side of the core 1 is fixedly connected to one end of the support column 8 to form a rotation and support cooperation structure, one end of the support column 8 is provided with a buffer pad 9, the outer side of the buffer pad 9 is fitted with a wear-resistant layer 10, the outer side of the wear-resistant layer 10 is fitted with a lubricating layer 11, one side of the buffer pad 9 is fixedly connected to the other end of the support column 8, the outer side of the buffer pad 9 is tightly fitted with the inner side of the wear-resistant layer 10, the outer side of the wear-resistant layer 10 is tightly fitted with the inner side of the lubricating layer 11 to form a buffer, wear-resistant and lubricating structure, the outer side of the lubricating layer 11 is fitted with an outer sleeve 12.

[0018] The rotating support structure is formed by the core, inner sleeve, bearing base and bearing. Combined with the buffer, wear-resistant and lubricating layers on the outside of the support column, it can not only ensure the stable support and flexible rotation of the bumper bushing, but also enhance its buffer and shock absorption performance, extend its service life and reduce friction loss. Example 3

[0019] like Figure 1-4 As shown, this utility model provides a technical solution: an elastic connecting sleeve for a bumper bushing, including a core 1, a guide groove 2 on the outer surface of the core 1, an inner sleeve layer 3 fitted onto the outer surface of the core 1, a bearing base 4 on the side of the core 1, the guide groove 2 on the outer surface of the core 1, the outer surface of the core 1 tightly fitted with the inner side of the inner sleeve layer 3, the side of the core 1 fixedly connected to one side of the bearing base 4 to form a basic support structure, a bearing 6 fixedly connected to the side of the bearing base 4, a sealing ring 5 fitted onto the surface of the bearing 6, and the bearing... The bearing 6 has a bearing through hole 7 on its side. A support column 8 is fixedly connected to the outer side of the core 1. The surface of the bearing 6 is tightly fitted with the inner side of the sealing ring 5. One side of the bearing 6 is fixedly connected to the other side of the bearing base 4. The bearing 6 has a bearing through hole 7 on its side. The outer side of the core 1 is fixedly connected to one end of the support column 8, forming a rotation and support cooperation structure. A buffer pad 9 is provided at one end of the support column 8. A wear-resistant layer 10 is fitted on the outer side of the buffer pad 9. A lubricating layer 11 is fitted on the outer side of the wear-resistant layer 10. One side of the buffer pad 9 is fixed to the other end of the support column 8. The outer side of the buffer pad 9 is tightly fitted to the inner side of the wear-resistant layer 10, and the outer side of the wear-resistant layer 10 is tightly fitted to the inner side of the lubrication layer 11, forming a buffer, wear-resistant, and lubricating structure. An outer sleeve 12 is fitted onto the outer side of the lubrication layer 11, and a reinforcing rib layer 13 is fitted onto the outer side of the outer sleeve 12. A strip groove 14 is formed on the outer side of the reinforcing rib layer 13, and a fixing ring 15 is fixedly fitted onto the outer side of the reinforcing rib layer 13. The outer side of the lubrication layer 11 is tightly fitted to the inner side of the outer sleeve 12, and the outer side of the outer sleeve 12 is tightly fitted to the inner side of the reinforcing rib layer 13. A strip groove 14 is provided on the side. The outer side of the reinforcing rib layer 13 is fixedly sleeved with the inner side of the fixing ring 15 to form an outer protective and fixing base structure. A fixing ring groove 16 is provided on the surface of the fixing ring 15. A fixing screw hole 17 is provided on the inner side of the fixing ring groove 16. A fixing screw 18 is spirally connected to the inner side of the fixing screw hole 17. The fixing ring groove 16 is provided on the surface of the fixing ring 15. The inner side of the fixing ring groove 16 is connected to the inner side of the fixing screw hole 17. The inner side of the fixing screw hole 17 is spirally connected to the outer side of the fixing screw 18 to form an integral fixing structure.

[0020] Through the coordinated structure of multiple layers, including basic support, rotational fit, buffer wear-resistant lubrication, and outer protective fixation, the bumper bushing achieves stable support, flexible rotation, and reliable fixation, while also enhancing the buffering, shock absorption, wear prevention, and consumption reduction effects. At the same time, the overall sealing performance and structural strength are improved through sealing and strengthening of the structure.

[0021] Working principle: The core 1 serves as the core foundation. The guide groove 2 on its outer surface provides guidance for assembly and movement. The tightly fitted inner sleeve 3 enhances the outer protection and stability of the core 1. Simultaneously, the side of the core 1 is fixedly connected to one side of the bearing base 4, forming a basic support structure and providing an installation reference for subsequent components. The other side of the bearing base 4 is fixedly connected to the bearing 6, enabling structural rotation. The tightly fitted sealing ring 5 on the surface of the bearing 6 prevents external impurities from entering the bearing and affecting its rotational performance. The bearing through-hole 7 on the side of the bearing 6 can be used for auxiliary installation or heat dissipation. Furthermore, the core 1... The outer fixed support column 8 cooperates with the bearing structure to form a rotation and support cooperation structure, ensuring the overall rotation flexibility and support reliability of the sleeve; the buffer pad layer 9 fixedly connected to the other end of the support column 8 can absorb the vibration and impact generated during the operation of the bumper. The wear-resistant layer 10 tightly fitted to the outside of the buffer pad layer 9 reduces wear during structural movement, and the lubrication layer 11 tightly fitted to the outside of the wear-resistant layer 10 reduces the frictional resistance of movement. The three together form a buffer, wear-resistant and lubricated structure, improving the durability and smoothness of the sleeve; the outer sleeve layer 12 tightly fitted to the outside of the lubrication layer 11 forms the outer basic protection, and the outer sleeve layer 1... The outer reinforcing rib layer 13, which is tightly fitted, enhances the overall structural strength of the sleeve. The strip groove 14 on the outer side of the reinforcing rib layer 13 can reduce weight or assist in heat dissipation. The fixing ring 15, which is fixedly fitted on the outer side of the reinforcing rib layer 13, constitutes the outer protective and fixed base structure. The fixing ring groove 16 on the surface of the fixing ring 15 provides installation space for the fixing screw hole 17. The fixing screw hole 17 cooperates with the fixing screw 18 that is spirally connected on the inner side to form an overall fixing structure, which stably fixes the entire elastic connecting sleeve to the corresponding position of the bumper bushing, so as to realize the coordinated work of each structure and meet the connection, support, rotation and protection requirements of the bumper bushing.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible connecting sleeve for a bumper bushing, comprising a core (1), characterized in that: The outer surface of the core (1) is provided with a guide groove (2), the outer side of the core (1) is fitted with an inner sleeve (3), the side of the core (1) is provided with a bearing base (4), the side of the bearing base (4) is fixedly connected with a bearing (6), the surface of the bearing (6) is fitted with a sealing ring (5), the side of the bearing (6) is provided with a bearing through hole (7), the outer side of the core (1) is fixedly connected with a support column (8), one end of the support column (8) is provided with a buffer pad (9), the outer side of the buffer pad (9) is fitted with a wear-resistant layer (10), the... A lubricating layer (11) is sleeved on the outside of the wear-resistant layer (10). An outer sleeve (12) is sleeved on the outside of the lubricating layer (11). A reinforcing rib layer (13) is sleeved on the outside of the outer sleeve (12). A strip groove (14) is opened on the outside of the reinforcing rib layer (13). A fixing ring (15) is fixedly sleeved on the outside of the reinforcing rib layer (13). A fixing ring groove (16) is opened on the surface of the fixing ring (15). A fixing screw hole (17) is opened on the inside of the fixing ring groove (16). A fixing screw (18) is screwed on the inside of the fixing screw hole (17).

2. The elastic connecting sleeve for a bumper bushing according to claim 1, characterized in that: The outer surface of the core (1) is provided with a guide groove (2), the outer side of the core (1) is tightly fitted with the inner side of the inner sleeve (3), and the side of the core (1) is fixedly connected to one side of the bearing base (4) to form a basic support structure.

3. The elastic connecting sleeve for a bumper bushing according to claim 1, characterized in that: The surface of the bearing (6) is tightly fitted with the inner side of the sealing ring (5), one side of the bearing (6) is fixedly connected to the other side of the bearing base (4), a bearing through hole (7) is opened on the side of the bearing (6), and the outer side of the core (1) is fixedly connected to one end of the support column (8) to form a rotating and supporting structure.

4. The elastic connecting sleeve for a bumper bushing according to claim 1, characterized in that: The buffer pad (9) is fixedly connected to the other end of the support column (8) on one side. The outer side of the buffer pad (9) is tightly fitted with the inner side of the wear-resistant layer (10). The outer side of the wear-resistant layer (10) is tightly fitted with the inner side of the lubrication layer (11), forming a buffer, wear-resistant and lubricating structure.

5. The elastic connecting sleeve for a bumper bushing according to claim 1, characterized in that: The outer side of the lubricating layer (11) is tightly fitted with the inner side of the outer layer (12), the outer side of the outer layer (12) is tightly fitted with the inner side of the reinforcing rib layer (13), the outer side of the reinforcing rib layer (13) has a strip groove (14), and the outer side of the reinforcing rib layer (13) is fixedly fitted with the inner side of the fixing ring (15), forming an outer protective and fixed base structure.

6. The elastic connecting sleeve for a bumper bushing according to claim 1, characterized in that: The surface of the fixing ring (15) is provided with a fixing ring groove (16), the inner side of the fixing ring groove (16) is connected to the inner side of the fixing screw hole (17), and the inner side of the fixing screw hole (17) is spirally connected to the outer side of the fixing screw (18) to form an integral fixing structure.

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