High-strength automobile guide bushing

Abstract

The utility model discloses a high strength automobile guide sleeve, including inner cylinder, honeycomb aluminum ring, absorption buffer layer and outer cylinder, the outside fixed honeycomb aluminum ring of inner cylinder has an absorption buffer layer outside fixed honeycomb aluminum ring, absorption buffer layer adopts nitrile rubber to make, the outside fixed outer cylinder of absorption buffer layer, the upper end of outer cylinder is welded fixed with inner cylinder, and the outside of outer cylinder is provided with honeycomb hole structure. The utility model inside hard chromium plating layer of inner cylinder promotes wear resistance and hardness, and the honeycomb aluminum ring outside the inner cylinder is through plastic deformation and absorbs energy and buffers impact, and the nitrile rubber absorption buffer layer further damps, and the honeycomb hole structure outside outer cylinder disperses stress, and the effect of reinforcing impact damping is strengthened, reduces the wear and tear of guide pair and the abnormal sound, realizes the comprehensive performance of high strength, high wear resistance, high -efficient buffering.

Description

Technical Field

[0001] This utility model relates to the field of automotive guide sleeve technology, and in particular to a high-strength automotive guide sleeve. Background Technology

[0002] The automotive guide sleeve is a key precision component in the automotive braking system (especially disc brakes) and hydraulic system. Its main function is to guide the movement of the piston and seal the hydraulic fluid. In braking scenarios, it is usually installed in the brake caliper cylinder. When the driver presses the brake pedal, the hydraulic fluid pushes the piston towards the brake pads. The guide sleeve ensures that the piston slides smoothly in a straight line, avoiding braking deviation caused by misalignment. At the same time, its inner sealing structure prevents hydraulic fluid leakage and ensures stable braking pressure.

[0003] Existing traditional guide sleeves mostly employ a single structure, making it difficult to balance strength, wear resistance, and cushioning. When dealing with high-frequency impacts and vibrations during vehicle operation, they are prone to problems such as decreased guiding accuracy, frequent abnormal noises, and short service life, failing to meet the high requirements for the comprehensive performance of guide sleeves. Therefore, in response to the above situation, there is an urgent need to develop a high-strength automotive guide sleeve with a hard chrome plating on the inner side of the inner cylinder to improve wear resistance and hardness; a honeycomb aluminum ring on the outer side of the inner cylinder absorbs energy and cushions impacts through plastic deformation; a nitrile rubber absorption and cushioning layer further reduces vibration; and a honeycomb hole structure on the outer side of the outer cylinder disperses stress and enhances the impact resistance and vibration reduction effect, reducing wear and abnormal noise of the guide pair. This would achieve a comprehensive performance of high strength, high wear resistance, and efficient cushioning, overcoming the shortcomings in current practical applications and meeting current needs. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength automotive guide sleeve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-strength automotive guide sleeve includes an inner cylinder, a honeycomb aluminum ring, an absorbent buffer layer, and an outer cylinder. The honeycomb aluminum ring is fixed to the outside of the inner cylinder, and an absorbent buffer layer made of nitrile rubber is fixed to the outside of the honeycomb aluminum ring. An outer cylinder is fixed to the outside of the absorbent buffer layer, and the upper end of the outer cylinder is welded to the inner cylinder. The outer cylinder has a honeycomb hole structure on its outer side.

[0007] Preferably, the inner side of the inner cylinder is plated with a wear-resistant layer, which is a hard chrome plating layer.

[0008] Preferably, both the inner and outer cylinders are made of 45 steel.

[0009] Preferably, a connecting plate is fixed to the top of the inner cylinder, and the connecting plate is provided with mounting holes for bolts to pass through.

[0010] The beneficial effects of this utility model are as follows: When in use, this high-strength automotive guide sleeve forms a composite structure with an inner cylinder, a honeycomb aluminum ring, an absorption buffer layer, and an outer cylinder, increasing the overall strength. The hard chrome plating greatly increases the hardness and wear resistance of the inner cylinder. The honeycomb aluminum ring has excellent plastic deformation energy absorption characteristics. When impacted, the honeycomb grid will gradually absorb energy through wall bending and extrusion deformation, rather than directly transmitting the impact force to the guide sleeve. This is equivalent to forming a flexible buffer layer between the guide pairs. The absorption buffer layer made of nitrile rubber further buffers and absorbs the impact vibration. In addition, the force transmission characteristics of the hexagonal hole walls of the honeycomb structure disperse stress. Combined with the deformation space reserved in the hole, it effectively buffers impact energy, absorbs vibration, and reduces wear and abnormal noise of the guide pairs. In summary, the hard chrome plating on the inner side of the inner cylinder of this utility model improves wear resistance and hardness; the honeycomb aluminum ring on the outer side of the inner cylinder absorbs energy and buffers impact through plastic deformation, the nitrile rubber absorption buffer layer further reduces vibration, and the honeycomb hole structure on the outer side of the outer cylinder disperses stress and enhances the impact resistance and vibration reduction effect, reducing wear and abnormal noise of the guide pair, and achieving comprehensive performance of high strength, high wear resistance and efficient buffering. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 This is an internal sectional view of the present invention.

[0013] Legend:

[0014] 1. Inner cylinder; 101. Wear-resistant layer; 102. Connecting plate; 103. Mounting hole; 2. Honeycomb aluminum ring; 3. Absorbent buffer layer; 4. Outer cylinder; 401. Honeycomb hole structure. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Specific implementation examples are given below.

[0017] See Figures 1-2In this embodiment of the invention, a high-strength automotive guide sleeve includes an inner cylinder 1, a honeycomb aluminum ring 2, an absorbent buffer layer 3, and an outer cylinder 4. The inner cylinder 1 is coated with a wear-resistant layer 101, which is a hard chrome plating. The hard chrome plating significantly increases the hardness and wear resistance of the inner cylinder 1. A honeycomb aluminum ring 2 is fixed to the outer side of the inner cylinder 1. The honeycomb core layer of the honeycomb aluminum has excellent plastic deformation energy absorption characteristics. When impacted, the honeycomb cells gradually absorb energy through wall bending and compression deformation, rather than directly transmitting the impact force to the guide sleeve. A flexible buffer layer is formed between the guide pairs. An absorbent buffer layer 3 is fixed to the outside of the honeycomb aluminum ring 2. The absorbent buffer layer 3 is made of nitrile rubber, which gives it good buffer absorption performance. An outer cylinder 4 is fixed to the outside of the absorbent buffer layer 3. The upper end of the outer cylinder 4 is welded to the inner cylinder 1. A honeycomb hole structure 401 is provided on the outside of the outer cylinder 4. The stress is dispersed by the force transmission characteristics of the hexagonal hole wall of the honeycomb hole structure 401. With the deformation space reserved in the hole, the impact energy is effectively buffered, vibration is absorbed, and wear and abnormal noise of the guide pair are reduced.

[0018] Both the inner cylinder 1 and the outer cylinder 4 are made of 45 steel, giving them good strength.

[0019] The top of the inner cylinder 1 is fixed with a connecting plate 102. The connecting plate 102 is provided with mounting holes 103 for bolts to pass through. The bolts are passed through the mounting holes 103 and fixed to the car, thereby fixing the inner cylinder 1.

[0020] Working principle: This high-strength automotive guide sleeve, when in use, forms a composite structure through the inner cylinder 1, honeycomb aluminum ring 2, absorption buffer layer 3, and outer cylinder 4, increasing the overall strength. The hard chrome plating greatly increases the hardness and wear resistance of the inner cylinder. The honeycomb aluminum ring 2 has excellent plastic deformation energy absorption characteristics. When impacted, the honeycomb grid will gradually absorb energy through wall bending and extrusion deformation, rather than directly transmitting the impact force to the guide sleeve. This is equivalent to forming a flexible buffer layer between the guide pairs. The absorption buffer layer 3, made of nitrile rubber, further buffers and absorbs the impact vibration. In addition, the force transmission characteristics of the hexagonal hole walls of the honeycomb hole structure 401 disperse stress. Combined with the deformation space reserved in the hole, it effectively buffers impact energy, absorbs vibration, and reduces wear and abnormal noise of the guide pairs.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-strength automotive guide sleeve, characterized in that, The device includes an inner cylinder (1), a honeycomb aluminum ring (2), an absorbent buffer layer (3), and an outer cylinder (4). The honeycomb aluminum ring (2) is fixed to the outside of the inner cylinder (1). An absorbent buffer layer (3) is fixed to the outside of the honeycomb aluminum ring (2). The absorbent buffer layer (3) is made of nitrile rubber. An outer cylinder (4) is fixed to the outside of the absorbent buffer layer (3). The upper end of the outer cylinder (4) is welded to the inner cylinder (1). A honeycomb hole structure (401) is provided on the outside of the outer cylinder (4).

2. The high-strength automotive guide sleeve according to claim 1, characterized in that, The inner cylinder (1) is coated with a wear-resistant layer (101), which is a hard chrome plating.

3. The high-strength automotive guide sleeve according to claim 1, characterized in that, Both the inner cylinder (1) and the outer cylinder (4) are made of 45 steel.

4. The high-strength automotive guide sleeve according to claim 1, characterized in that, The top of the inner cylinder (1) is fixed with a connecting plate (102), and the connecting plate (102) is provided with mounting holes (103) for bolts to pass through.

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