An environmentally friendly bio-based polyurethane thrust rod end cap

Abstract

This utility model relates to the technical field of thrust rod end caps for automotive suspension systems, and discloses an environmentally friendly bio-based polyurethane thrust rod end cap, including an upper end cap, a lower end cap installed at the bottom of the upper end cap, a protective cover fixedly connected to the bottom of the lower end cap, and a sealing mechanism at the bottom of the lower end cap to improve the sealing performance of the connection. A protective mechanism is provided on the outer wall of the upper end cap to improve the protective performance of the end cap. The sealing mechanism includes a sealing sleeve, the outer wall of which is fixedly connected to the inner wall of the upper end cap. In this utility model, the sealing sleeve enhances the sealing performance of the end cap, while the sealing ring improves the sealing performance between the lower end cap connected to the upper end cap. When the sealing performance of the sealing sleeve weakens with use, the push block is pushed forward by the elastic column, automatically compensating for the gap caused by wear and extending the service life of the overall sealing structure.

Description

Technical Field

[0001] This utility model relates to the technical field of thrust rod end caps for automotive suspension systems, and in particular to an environmentally friendly bio-based polyurethane thrust rod end cap. Background Technology

[0002] In the operation of commercial vehicles and construction machinery, the suspension system plays a crucial role. As a key component of the suspension system, the performance of the thrust rod end cap directly affects the overall performance of the vehicle. Environmentally friendly bio-based polyurethane thrust rod end caps represent a significant breakthrough in the green transformation of automotive parts. Located at the connection between the thrust rod and other components, the thrust rod end cap serves as a connector, support, and buffer. During vehicle operation, uneven road surfaces cause the wheels to bounce vertically and move laterally. The thrust rod end cap needs to transmit these complex forces to the relevant components to ensure the normal operation of the suspension system and maintain vehicle stability. At the same time, it must also have good cushioning performance to effectively absorb and reduce vibrations and impacts from the road surface, reduce damage to other vehicle components, and ensure driving comfort and safety. On construction sites, the ground is often covered with stones and piles of soil, generating enormous impact forces when vehicles travel. In such cases, the cushioning and vibration damping functions of the thrust rod end cap become extremely critical.

[0003] A search revealed Chinese Patent Publication No. CN216912837U, which discloses a tooling for crimping end caps of automotive thrust rods. The tooling includes a base plate and a top plate. Vertical guide posts with heads are fixed at the four corners of the base plate, each guide post passing through one of the four corners of the top plate. Each guide post is fitted with a support spring. The top plate is elastically supported above the base plate by these springs. Symmetrical end cap crimping modules are arranged on the lower surface of the top plate and the upper surface of the base plate. Each end cap crimping module includes symmetrical oblique positioning blocks, with sliders positioned between the upper and lower oblique positioning blocks. This invention is applicable to crimping thrust rod end caps for various automotive parts, ensuring product consistency, shortening the crimping cycle, and improving crimping quality. The tooling is safe, reliable, and has a long service life. However, when relying solely on a single sealing ring, the entire sealing system fails if any component is damaged. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an environmentally friendly bio-based polyurethane thrust rod end cap, which aims to improve the problem that in the prior art, when sealing relies solely on a single sealing ring component, the entire sealing system fails if any component is damaged.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an environmentally friendly bio-based polyurethane thrust rod end cap, comprising an upper end cap, a lower end cap installed at the bottom of the upper end cap, a protective cover fixedly connected to the bottom of the lower end cap, a sealing mechanism provided at the bottom of the lower end cap to improve the sealing performance of the connection, a protective mechanism provided on the outer wall of the upper end cap to improve the protective performance of the end cap, the sealing mechanism comprising a sealing sleeve, the outer wall of the sealing sleeve being fixedly connected to the inner wall of the upper end cap, two sealing rings fixedly connected to the bottom of the upper end cap, multiple fixing plates fixedly connected to the bottom of the lower end cap, elastic columns fixedly connected to adjacent sides of each fixing plate, push blocks fixedly connected to adjacent sides of each elastic column, multiple inclined blocks fixedly connected to the middle of the bottom end of the lower end cap, and an installation assembly provided on the top of the upper end cap.

[0006] The above technical solution involves installing a lower end cover at the bottom of the upper end cover to ensure the stability of the overall structure. A protective cover is further fixedly connected to the bottom of the lower end cover, effectively resisting external physical impacts and chemical corrosion, thus extending the service life of the end cover. A sealing mechanism is installed at the bottom of the lower end cover; its core function is to improve the sealing performance of the connection points, prevent internal media leakage, and ensure the normal operation of the thrust rod. To further enhance the overall protective capability of the end cover, a protective mechanism is also firmly installed on the outer wall of the upper end cover. This protective mechanism effectively resists the influence of various adverse external factors, ensuring the stable operation of the end cover in various complex environments.

[0007] As a further description of the above technical solution:

[0008] The protective mechanism includes a first protective sleeve, the bottom of which fits against the top of the upper cover. The bottom of the first protective sleeve has multiple positioning holes. A second protective sleeve is installed at the bottom of the lower cover. The top of the second protective sleeve is fixedly connected to multiple positioning posts. The top of each positioning post engages with the bottom of the corresponding positioning hole. Rotating components are provided on both the left and right sides of the second protective sleeve, and fixing components are provided on both the left and right sides of the first protective sleeve.

[0009] Through the above technical solution: the bottom of the protective sleeve one fits snugly against the top of the upper cover to ensure the stability of the connection between the two. In order to achieve the positioning function, multiple positioning holes are opened at the bottom of the protective sleeve one. The protective sleeve two is installed at the bottom of the lower cover. In order to ensure the stable connection between the protective sleeve two and the protective sleeve one, multiple positioning posts are fixedly connected to the top of the protective sleeve two. The top of these positioning posts engages with the bottom of the corresponding positioning holes at the bottom of the protective sleeve one, thereby forming a preliminary fixed connection effect.

[0010] As a further description of the above technical solution:

[0011] The mounting assembly includes multiple holes, all of which are located on the top of the lower end cover. Multiple bolts are threaded around the top of the upper end cover, and the bottom of each bolt engages with the inner wall of the hole.

[0012] The above technical solution involves creating holes on the top surface of the lower end cover and connecting multiple bolts around the top of the upper end cover. These bolts engage with the inner wall of the holes, ensuring optimal fixation of the entire component during installation and enhancing the stability and durability of the overall structure.

[0013] As a further description of the above technical solution:

[0014] The rotating assembly includes two fixed blocks, each with one side of an adjacent fixed block fixedly connected to the left and right sides of a protective sleeve. An L-shaped plate is rotatably connected to the middle of each fixed block, and fixed blocks are fixedly connected to the left and right sides of the protective sleeve.

[0015] Through the above technical solution: the adjacent side of the fixed block one is attached to the left and right sides of the protective sleeve two, ensuring the overall stability of the component. An L-shaped plate is rotatably connected to the middle position of each fixed block one. The L-shaped plate enables the component to be fixed during rotation. Fixed blocks two are also fixedly connected to the left and right sides of the protective sleeve one. These fixed blocks two are attached to the protective sleeve one, further enhancing the structural stability and functionality of the entire rotating component.

[0016] As a further description of the above technical solution:

[0017] The fixing component includes two fixing blocks three, each of which is fixedly connected to the top left and right sides of the protective sleeve one on an adjacent side, and each of the fixing blocks three is slidably connected to an adjusting column on its top.

[0018] Through the above technical solution: the fixed blocks three are ensured to not shift during use, and an adjusting column is slidably connected to the top of each fixed block three, so that the adjusting column can be adjusted at the top of the fixed block three, thereby achieving precise adjustment and stable support for the entire device.

[0019] As a further description of the above technical solution:

[0020] A protective cover is fixedly connected to the bottom of the lower end cover, and the outer wall of the protective cover is slidably connected to the middle of the bottom end of the second protective sleeve.

[0021] The above technical solution provides additional safety protection. The outer wall of the protective cover is slidably connected to the bottom center of the second protective sleeve, thereby better adapting to different working environments and protection needs.

[0022] As a further description of the above technical solution:

[0023] The bottom of the inclined block is slidably connected to the top of the corresponding push block, and the top of the L-shaped plate is engaged with the inner side of the second fixed block.

[0024] Through the above technical solution: the bottom of the inclined block moves relative to the top of the corresponding push block through a sliding connection, ensuring that the two can cooperate during operation to achieve the desired effect; the top of the L-shaped plate engages with the inner side of the second fixed block, ensuring the stability of the L-shaped plate inside the second fixed block.

[0025] As a further description of the above technical solution:

[0026] The adjacent side of the push block is in contact with the bottom of the outer wall of the sealing sleeve, and the bottom of the adjusting column is engaged with the top center of the corresponding L-shaped plate.

[0027] The above technical solution achieves a good sealing effect by having the adjacent side of the push block fit against the bottom of the outer wall of the sealing sleeve, and the bottom of the adjusting column engages with the top center of the corresponding L-shaped plate to ensure the stability of the structure.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the sealing performance of the end cap is enhanced by the sealing sleeve, while the sealing ring improves the sealing performance between the lower end cap connected to the upper end cap. During connection, the elastic column pushes the push block to enhance the sealing effect of the sealing sleeve. When the sealing performance of the sealing sleeve weakens with use, the push block is pushed by the elastic column to compensate for the gap caused by wear, and enhance the sealing performance of the connection between the sealing sleeve and the push rod. The elastic deformation of the elastic column will automatically compensate for the gap and extend the service life of the overall sealing structure.

[0030] 2. In this utility model, the initial fixation is achieved by engaging the positioning post at the top of the second protective sleeve with the corresponding positioning hole at the bottom of the first protective sleeve. Then, the L-shaped plate is rotated to engage with the second fixing block. Finally, the L-shaped plate is fixed by the adjusting post, thus achieving the installation effect of the first and second protective sleeves. This can isolate the end cover from the external environment, prevent dust, liquid, and mechanical impurities from directly contacting the end cover connection part, and extend the service life of the end cover. Attached Figure Description

[0031] Figure 1 A front perspective view of a protective sleeve for an environmentally friendly bio-based polyurethane thrust rod end cap proposed in this utility model.

[0032] Figure 2 This is a schematic diagram of a sealing sleeve for an environmentally friendly bio-based polyurethane thrust rod end cap proposed in this utility model.

[0033] Figure 3 This is a two-part split view of the protective sleeve for an environmentally friendly bio-based polyurethane thrust rod end cap proposed in this utility model.

[0034] Figure 4 This is a diagram showing the lower end cap of an environmentally friendly bio-based polyurethane thrust rod end cap proposed in this utility model.

[0035] Figure 5 This is an exploded view of the protective cover for an environmentally friendly bio-based polyurethane thrust rod end cap proposed in this utility model.

[0036] Figure 6 This is a schematic diagram of the fixing plate for an environmentally friendly bio-based polyurethane thrust rod end cap proposed in this utility model.

[0037] Figure 7 This is a bolt-disassembly diagram of an environmentally friendly bio-based polyurethane thrust rod end cap proposed in this utility model.

[0038] Legend:

[0039] 1. Upper end cover; 2. Sealing mechanism; 201. Sealing sleeve; 202. Sealing ring; 203. Fixing plate; 204. Elastic column; 205. Push block; 206. Inclined block; 207. Mounting assembly; 2071. Hole; 2072. Bolt; 3. Protective mechanism; 301. Protective sleeve one; 302. Positioning hole; 303. Protective sleeve two; 304. Positioning column; 305. Rotating assembly; 3051. Fixing block one; 3052. L-shaped plate; 3053. Fixing block two; 306. Fixing assembly; 3061. Fixing block three; 3062. Adjusting column; 4. Lower end cover; 5. Protective cover. Detailed Implementation

[0040] 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.

[0041] Please see the appendix Figure 5 Appendix Figure 6 and attached Figure 7An embodiment of this utility model provides an environmentally friendly bio-based polyurethane thrust rod end cap, including an upper end cap 1, a lower end cap 4 installed at the bottom of the upper end cap 1, a protective cover 5 fixedly connected to the bottom of the lower end cap 4, a sealing mechanism 2 provided at the bottom of the lower end cap 4, the sealing mechanism 2 being used to improve the sealing performance of the connection, a protective mechanism 3 provided on the outer wall of the upper end cap 1, the protective mechanism 3 being used to improve the protective performance of the end cap, the sealing mechanism 2 including a sealing sleeve 201, the outer wall of the sealing sleeve 201 being fixedly connected to the inner wall of the upper end cap 1, two sealing rings 202 fixedly connected at the bottom of the upper end cap 1, multiple fixing plates 203 fixedly connected at the bottom of the lower end cap 4, elastic columns 204 fixedly connected on adjacent sides of the fixing plates 203, push blocks 205 fixedly connected on adjacent sides of the elastic columns 204, multiple inclined blocks 206 fixedly connected at the bottom center of the lower end cap 4, and an installation component 207 provided on the top of the upper end cap 1;

[0042] Specifically, a lower end cover 4 is installed at the bottom of the upper end cover 1, and a protective cover 5 is fixedly connected to the bottom of the lower end cover 4. This protective cover 5 can effectively prevent external impurities from entering the interior of the end cover, providing good protection. A sealing mechanism 2 is set at the bottom of the lower end cover 4. The main function of the sealing mechanism 2 is to improve the sealing performance of the connection part and ensure the normal operation of the thrust rod. A protective mechanism 3 is set on the outer wall of the upper end cover 1. This protective mechanism 3 can further improve the overall protective performance of the end cover, enabling it to maintain a stable working state in various complex environments. The outer wall of the sealing sleeve 201 is fixedly connected to the inner wall of the upper end cover 1 to ensure the sealing effect. At the bottom of the upper end cover 1, two sealing rings 202 are also fixedly connected, which further enhance the sealing performance.

[0043] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The protective mechanism 3 includes a protective sleeve 301, the bottom of which is fitted to the top of the upper cover 1. The bottom of the protective sleeve 301 is provided with multiple positioning holes 302. The bottom of the lower cover 4 is provided with a protective sleeve 303. The top of the protective sleeve 303 is fixedly connected with multiple positioning posts 304. The top of the positioning posts 304 engages with the bottom of the corresponding positioning holes 302. Rotating components 305 are provided on both the left and right sides of the protective sleeve 303. Fixing components 306 are provided on both the left and right sides of the protective sleeve 301.

[0044] Specifically, the bottom of the protective sleeve 301 can fit snugly against the top of the upper cover 1 to ensure the connection between the two. Multiple positioning holes 302 are opened at the bottom of the protective sleeve 301. A second protective sleeve 303 is installed at the bottom of the lower cover 4. Multiple positioning posts 304 are installed on the top of the second protective sleeve 303. These positioning posts 304 match the positioning holes 302 of the first protective sleeve 301. When the second protective sleeve 303 is installed, the top of the positioning post 304 will engage with the bottom of the corresponding positioning hole 302, thereby ensuring the stability and alignment accuracy of the entire protective mechanism 3.

[0045] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 5 The rotating component 305 includes two fixing blocks 3051. The adjacent sides of the fixing blocks 3051 are fixedly connected to the left and right sides of the protective sleeve 303. The middle of the fixing blocks 3051 is rotatably connected to an L-shaped plate 3052. The left and right sides of the protective sleeve 301 are fixedly connected to the fixing blocks 3051. The adjacent side of the push block 205 is in contact with the bottom of the outer wall of the sealing sleeve 201. The bottom of the adjusting column 3062 is engaged with the top center of the corresponding L-shaped plate 3052. The fixing component 306 includes two fixing blocks 3061. The adjacent sides of the fixing blocks 3061 are fixedly connected to the top left and right sides of the protective sleeve 301. The top of the fixing blocks 3061 is slidably connected to the adjusting column 3062.

[0046] Specifically, the adjacent side of the fixing block 3051 is fixedly connected to the left and right sides of the protective sleeve 303. The middle part of the fixing block 3051 is connected to the L-shaped plate 3052 by a rotating connection to ensure that it can rotate. The left and right sides of the protective sleeve 301 are also fixedly connected to the fixing block 3053 to enhance the stability of the overall structure. The adjacent side of the push block 205 is attached to the bottom of the outer wall of the sealing sleeve 201 to ensure the sealing during the movement. The bottom of the adjusting column 3062 is engaged with the top center of the corresponding L-shaped plate 3052 to ensure the accuracy and reliability of the adjustment function.

[0047] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 The bottom of the lower end cover 4 is fixedly connected to a protective cover 5. The outer wall of the protective cover 5 is slidably connected to the middle of the bottom of the second protective sleeve 303. The mounting component 207 includes multiple holes 2071, all of which are opened on the top of the lower end cover 4. Multiple bolts 2072 are threaded around the top of the upper end cover 1. The bottom of the bolts 2072 engages with the inner wall of the holes 2071. The bottom of the inclined block 206 is slidably connected to the top of the corresponding push block 205. The top of the L-shaped plate 3052 is engaged with the inner side of the second fixing block 3053.

[0048] Specifically, a protective cover 5 is fixedly connected to the bottom of the lower end cover 4. The protective cover 5 is for providing additional protection. The outer wall of the protective cover 5 is slidably connected to the middle of the bottom of the protective sleeve 303, so that the protective cover 5 can adapt to different working environments and needs. The hole 2071 is opened on the top surface of the lower end cover 4 to ensure the stability of the installation and uniform force distribution. Around the top of the upper end cover 1, multiple bolts 2072 are fixed by threaded connection. The bottom part of these bolts 2072 engages with the inner wall of the hole 2071 to form a fixed connection structure, ensuring the stability and safety of the entire device.

[0049] Working principle: The sealing sleeve 201 enhances the sealing performance of the end cap, while the sealing ring 202 improves the sealing performance between the lower end cap 4 connected to the upper end cap 1. The upper end cap 1 and the lower end cap 4 are connected by bolts 2072, further improving the sealing performance of the end cap. When connected, the elastic column 204 pushes the push block 205 to enhance the sealing effect of the sealing sleeve 201. When the sealing performance of the sealing sleeve 201 weakens with use, the push block 205 is pushed by the elastic column 204 to compensate for the gap caused by wear and enhance the sealing performance of the connection between the sealing sleeve 201 and the push rod. When the sealing performance of the sealing sleeve 201 decreases due to long-term wear and aging, the elastic deformation of the elastic column 204 will automatically compensate for the gap, avoiding sealing failure caused by rigid connection and extending the service life of the overall sealing structure.

[0050] The upper end cover 1 and the lower end cover 4 are protected by protective sleeve 1 301 and protective sleeve 2 303. During installation, the positioning pin 304 on the top of protective sleeve 2 303 engages with the corresponding positioning hole 302 at the bottom of protective sleeve 1 301 to achieve initial fixation. Then, the L-shaped plate 3052 is rotated to engage with the fixing block 2 3053. Finally, the L-shaped plate 3052 is fixed by adjusting pin 3062, thus achieving the installation effect of protective sleeve 1 301 and protective sleeve 2 303. This can isolate the end cover from the external environment, prevent dust, liquid, and mechanical impurities from directly contacting the end cover connection part, and extend the service life of the end cover.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An environmentally friendly bio-based polyurethane thrust rod end cover, comprising an upper end cover (1), characterized in that: The bottom of the upper end cover (1) is equipped with a lower end cover (4), and a protective cover (5) is fixedly connected to the bottom of the lower end cover (4). A sealing mechanism (2) is provided at the bottom of the lower end cover (4). The sealing mechanism (2) is used to improve the sealing performance of the connection. A protective mechanism (3) is provided on the outer wall of the upper end cover (1). The protective mechanism (3) is used to improve the protective performance of the end cover. The sealing mechanism (2) includes a sealing sleeve (201), the outer wall of which is fixedly connected to the inner wall of the upper cover (1), two sealing rings (202) are fixedly connected to the bottom of the upper cover (1), multiple fixing plates (203) are fixedly connected to the bottom of the lower cover (4), elastic columns (204) are fixedly connected to each adjacent side of the fixing plate (203), push blocks (205) are fixedly connected to each adjacent side of the elastic column (204), multiple inclined blocks (206) are fixedly connected to the middle of the bottom end of the lower cover (4), and an installation assembly (207) is provided on the top of the upper cover (1).

2. The environmentally friendly bio-based polyurethane thrust rod end cover according to claim 1, characterized in that: The protective mechanism (3) includes a protective sleeve one (301), the bottom of the protective sleeve one (301) is fitted with the top of the upper end cover (1), the bottom of the protective sleeve one (301) is provided with multiple positioning holes (302), the bottom of the lower end cover (4) is provided with a protective sleeve two (303), the top of the protective sleeve two (303) is fixedly connected with multiple positioning posts (304), the top of the positioning posts (304) is engaged with the bottom of the corresponding positioning holes (302), the left and right sides of the protective sleeve two (303) are provided with rotating components (305), and the left and right sides of the protective sleeve one (301) are provided with fixing components (306).

3. The environmentally friendly bio-based polyurethane thrust rod end cap according to claim 1, characterized in that: The mounting assembly (207) includes multiple holes (2071), all of which are located on the top of the lower end cover (4). Multiple bolts (2072) are threaded around the top of the upper end cover (1), and the bottom of the bolts (2072) engages with the inner wall of the holes (2071).

4. The environmentally friendly bio-based polyurethane thrust rod end cap according to claim 2, characterized in that: The rotating assembly (305) includes two fixing blocks (3051). The adjacent sides of the fixing blocks (3051) are fixedly connected to the left and right sides of the protective sleeve (303). The middle of the fixing blocks (3051) is rotatably connected to an L-shaped plate (3052). The left and right sides of the protective sleeve (301) are fixedly connected to the fixing blocks (3053).

5. The environmentally friendly bio-based polyurethane thrust rod end cap according to claim 2, characterized in that: The fixing component (306) includes two fixing blocks (3061), with each adjacent side of the fixing blocks (3061) fixedly connected to the top left and right sides of the protective sleeve (301), and each fixing block (3061) has an adjusting column (3062) slidably connected to its top.

6. The environmentally friendly bio-based polyurethane thrust rod end cap according to claim 2, characterized in that: The bottom of the lower end cover (4) is fixedly connected to a protective cover (5), and the outer wall of the protective cover (5) is slidably connected to the middle of the bottom end of the protective sleeve (303).

7. The environmentally friendly bio-based polyurethane thrust rod end cap according to claim 4, characterized in that: The bottom of the inclined block (206) is slidably connected to the top of the corresponding push block (205), and the top of the L-shaped plate (3052) is engaged with the inner side of the fixing block two (3053).

8. The environmentally friendly bio-based polyurethane thrust rod end cap according to claim 5, characterized in that: The adjacent side of the push block (205) is in contact with the bottom of the outer wall of the sealing sleeve (201), and the bottom of the adjusting column (3062) is engaged with the top center of the corresponding L-shaped plate (3052).

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