High-temperature-resistant automobile guide pin assembly

Abstract

The utility model discloses a high-temperature-resistant automobile guide pin assembly which comprises a pin head and a pin body, and an elastic lining is installed on the upper portion of the outer wall of the pin body. Heat dissipation fins are arranged on the outer wall, located below the elastic lining, of the outer portion of the pin body, an oil storage groove is further formed in the outer wall of the pin body, and a supporting framework is further installed in the pin body. The spiral fins increase the surface area, guide airflow vortex and improve heat dissipation efficiency, interference between the spiral fins and the elastic lining is avoided in cooperation with lower arrangement, it is ensured that the temperature rise of the surface of the guide pin is controlled within the qualified range under the high-temperature working condition, the hexagonal honeycomb supporting framework forms an internal heat insulation cavity, heat is prevented from being transmitted to the core of the pin body, and heat dissipation efficiency is improved. The thermal deformation risk is reduced; the polyurethane material is good in temperature resistance, the waveform structure can effectively absorb the thermal expansion difference of a brake system in the axial direction, and clamping stagnation is avoided; the circular-truncated-cone-shaped check block seals the notch at the normal temperature to prevent pollution, and lubricating grease is automatically released in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of high-temperature-resistant automobile guide pin assemblies. BACKGROUND

[0002] Automobile guide pin is the key component in braking system, responsible for guiding brake pad to move along correct direction during braking process, ensure that braking force is evenly distributed, while withstand high temperature, friction and mechanical impact. Its performance directly affects the response speed, stability and safety of braking system.

[0003] Under frequent braking or extreme working conditions, the working temperature of guide pin can rise to above 300 DEG C, even reach 500-600 DEG C, traditional guide pin uses ordinary steel and aluminum alloy, its strength decreases at high temperature, leading to guide pin deformation jam, and conventional lubricating grease is easily decomposed, loss at high temperature, aggravate friction and wear, the difference of thermal expansion coefficient of guide pin and bushing material can lead to clearance change, affect movement precision.

[0004] Therefore, it is necessary to invent a kind of high-temperature-resistant automobile guide pin assembly to solve the above problems. UTILITY MODEL CONTENT

[0005] (One) utility model purpose

[0006] To solve the technical problems existing in the background art, the utility model provides a kind of high-temperature-resistant automobile guide pin assembly, which can reduce the influence of high temperature on guide pin.

[0007] (Two) technical scheme

[0008] In order to achieve the above purpose, the utility model provides the following technical scheme: a kind of high-temperature-resistant automobile guide pin assembly, including pin head and pin body, the pin head is installed in the top of the pin body, the outer wall of the pin body upper is equipped with elastic bushing;

[0009] The outer wall of the pin body below the elastic bushing is provided with heat dissipation fin, the heat dissipation fin is spiral around the outer wall of the pin body as a whole, and a plurality of uniform oil storage grooves are further provided on the outer wall of the pin body, a support framework is further installed in the inner part of the pin body, and the support framework is arranged below the inner part of the pin body.

[0010] Preferably, mounting screw hole is formed in the top of the pin body, the pin head includes nut, gasket and screw rod, the screw rod is inserted into the mounting screw hole, the mounting groove body is recessed in the installation position of the elastic bushing on the outer wall of the pin body, and butt joint fixing seat is provided at both ends of the mounting groove body.

[0011] Preferably, the heat dissipation fin is arranged below the outer wall of the pin body, and is spiral, the fin height of the heat dissipation fin is 2mm.

[0012] Preferably, the oil storage tank is disposed on the outer wall of the pin body and avoids the heat dissipation fins. A baffle is disposed inside the oil storage tank. The front end of the baffle is frustum-shaped and covers the opening of the oil storage tank. A fixed base is disposed at the bottom of the oil storage tank.

[0013] Preferably, the pin body has an annular groove inside to accommodate the support frame. The support frame is composed of multiple sets of support rings, each set of support rings being surrounded by multiple hexagonal support frames. The multiple hexagonal support frames form a ring and are fixedly arranged upwards.

[0014] Preferably, the elastic bushing 3 is made of polyurethane material and is corrugated in shape.

[0015] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:

[0016] 1. The spiral fins of this utility model improve heat dissipation efficiency by increasing the surface area and guiding the airflow vortex. The arrangement below avoids interference with the elastic bushing, ensuring that the temperature rise of the guide pin surface is controlled within the qualified range under high temperature conditions. The hexagonal honeycomb support skeleton forms an internal heat insulation cavity, which blocks the heat from being transferred to the core of the pin body and reduces the risk of thermal deformation.

[0017] 2. The polyurethane material in this utility model has good temperature resistance, and the waveform structure can effectively absorb the thermal expansion difference of the braking system in the axial direction to avoid jamming. Multiple sets of hexagonal support rings form a gradient stiffness distribution, and the radial expansion of the pin body is offset by elastic deformation at high temperature.

[0018] 3. In this utility model, the truncated cone-shaped stop block seals the slot to prevent contamination at room temperature and automatically releases grease during use. The oil reservoir and heat dissipation fins are designed to be misaligned to prevent high-temperature airflow from directly washing away the lubricant and to extend the effective lubrication time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0023] Figure 4 This is a schematic cross-sectional view of the oil storage tank section of this utility model.

[0024] Figure 5 This is a schematic diagram of the overall structure of the support frame of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Pin head; 11. Nut; 12. Washer; 13. Screw; 2. Pin body; 21. Mounting screw hole; 22. Mounting groove; 23. Connecting fixing seat; 24. Ring groove; 3. Elastic bushing; 4. Heat dissipation fins; 5. Oil reservoir; 51. Stop block; 52. Fixing base; 6. Support frame; 61. Support ring; 62. Hexagonal support frame. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides, for example Figures 1-5 The high-temperature resistant automotive guide pin assembly shown includes a pin head 1 and a pin body 2. The pin head 1 is installed on the top of the pin body 2, and an elastic bushing 3 is installed on the upper outer wall of the pin body 2.

[0029] Specifically, the outer wall of the pin body 2 located below the elastic bushing 3 is provided with heat dissipation fins 4. The heat dissipation fins 4 are spirally arranged around the outer wall of the pin body 2. The outer wall of the pin body 2 is also provided with multiple evenly arranged oil storage grooves 5. The pin body 2 is also equipped with a support frame 6 inside the pin body 2. The support frame 6 is mounted inside the lower part of the pin body 2.

[0030] Specifically, the top of the pin body 2 is provided with a mounting screw hole 21, and the pin head 1 includes a nut 11, a washer 12 and a screw 13. The screw 13 is inserted into the mounting screw hole 21. The outer wall of the pin body 2 has an elastic bushing 3 with a mounting groove 22 recessed in the mounting position. The two ends of the mounting groove 22 are provided with mating fixing seats 23 at the two ends of the elastic bushing 3.

[0031] In this embodiment, the pin head 1 includes a nut 11, a washer 12, and a screw 13. The screw 13 connects to the mounting screw hole 21 on the top of the pin body 2, enabling quick installation and disassembly. The pin body 2 is the main load-bearing structure, with heat dissipation fins 4 and an oil reservoir 5 on its outer wall, and a support frame 6 inside. An elastic bushing 3 is installed in the mounting groove 22 above the pin body 2, and its two ends are fixed by mating fixing seats 23, providing shock absorption and cushioning. The heat dissipation fins 4 have a spiral design, 2mm high, increasing the heat dissipation area and improving high-temperature resistance. The oil reservoir 5 is evenly distributed on the outer wall of the pin body 2, avoiding the heat dissipation fins 4, and has a stop block 51 and a fixing base 52 inside, used to store lubricating grease. The support frame 6 consists of a support ring 61 composed of multiple sets of hexagonal support frames 62, providing structural strength and stability.

[0032] Specifically, the heat dissipation fins 4 are located below the outer wall of the pin body 2 and are spiral-shaped, with the fins of the heat dissipation fins 4 having a height of 2mm.

[0033] Specifically, the oil storage tank 5 is set on the outer wall of the pin body 2 and avoids the heat dissipation fins 4. A stop block 51 is set inside the oil storage tank 5. The front end of the stop block 51 is frustum-shaped and covers the opening of the oil storage tank 5. A fixed base 52 is set at the bottom of the oil storage tank 5.

[0034] Specifically, the pin body 2 has an annular groove 24 inside to accommodate the support frame 6. The support frame 6 is composed of multiple sets of support rings 61. Each set of support rings 61 is surrounded by multiple hexagonal support frames 62. The multiple hexagonal support frames 62 form a ring and are fixedly arranged upwards.

[0035] Specifically, the elastic bushing 3 is made of polyurethane material, and its overall shape is corrugated.

[0036] In this embodiment, the pin head installation involves inserting the screw 13 into the mounting screw hole 21 and securing it with the nut 11 and washer 12 to ensure a tight connection between the pin head 1 and the pin body 2. The elastic bushing installation involves embedding the elastic bushing 3 into the mounting groove 22 and securing both ends with mating fixing seats 23 to ensure the bushing does not fall off under vibration. The support frame 6 assembly involves sequentially placing multiple sets of support rings 61 into the ring groove 24 to form a stable internal support structure.

[0037] Specifically, the spiral design of the heat dissipation fins 4 increases the heat dissipation area, enabling rapid heat dissipation through air convection in high-temperature environments. The frustum-shaped front end of the oil reservoir 5 block 51 covers the groove opening to prevent lubricating grease from leaking out, and the fixed base 52 ensures the stability of the block 51.

[0038] Specifically, the oil reservoir 5 is filled with oil through a cover design of the baffle 51, allowing the lubricating grease to be retained in the reservoir for a long time, reducing frictional loss. The detachable design of the pin head 1 facilitates the replacement or maintenance of the internal support frame 6 and the elastic bushing 3.

[0039] In this embodiment, the spiral heat dissipation fins 4 significantly improve heat dissipation efficiency and are suitable for high-temperature operating conditions. The high-temperature resistant material of the supporting frame 6 further ensures the structural stability of the component at high temperatures. The polyurethane waveform design of the elastic bushing 3 effectively absorbs vibration and reduces noise. The lubricating grease in the oil reservoir 5 reduces friction and wear between the pin 2 and external components, extending service life.

[0040] Specifically, the support ring 61, composed of hexagonal support frames 62, provides a uniform force distribution and prevents the pin 2 from deforming. The mating fixing seat 23 ensures that the elastic bushing 3 does not loosen during frequent vibrations.

[0041] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high temperature resistant automotive guide pin assembly, characterized by: It includes pin head (1) and pin body (2), the pin head (1) is installed on the top of the pin body (2), the elastic bushing (3) is installed on the outer wall of the pin body (2) above; The outer wall of the pin body (2) below the elastic bushing (3) is provided with a heat dissipation fin (4), the heat dissipation fin (4) is spiral around the outer wall of the pin body (2), and a plurality of uniform oil storage grooves (5) are arranged on the outer wall of the pin body (2), and a support framework (6) is further installed in the pin body (2), and the support framework (6) is arranged in the pin body (2) below.

2. A high temperature resistant automotive guide pin assembly as set forth in claim 1, characterized in that: The top of the pin body (2) is provided with a mounting screw hole (21), the pin head (1) includes a nut (11), a gasket (12) and a screw rod (13), the screw rod (13) is inserted into the mounting screw hole (21), the mounting groove (22) is recessed in the mounting position of the elastic bushing (3) on the outer wall of the pin body (2), and the two ends of the mounting groove (22) are provided with butt joint fixing seats (23) at the two ends of the elastic bushing (3).

3. A high temperature resistant automotive guide pin assembly as defined in claim 1, wherein: The heat dissipation fin (4) is arranged below the outer wall of the pin body (2), and is spiral, the fin height of the heat dissipation fin (4) is 2mm.

4. A high temperature resistant automotive guide pin assembly as defined in claim 1, wherein: The oil storage groove (5) is arranged on the outer wall of the pin body (2), and is arranged away from the heat dissipation fin (4), the oil storage groove (5) is provided with a stop block (51), the front end of the stop block (51) is circular truncated cone, and covers the slot position of the oil storage groove (5), and the bottom is provided with a fixed base (52), the fixed base (52) is arranged on the groove bottom of the oil storage groove (5).

5. A high temperature resistant automotive guide pin assembly as defined in claim 1, wherein: The inner part of the pin body (2) is provided with a ring groove (24) for accommodating the support framework (6), the support framework (6) is composed of a plurality of support rings (61), and the plurality of support rings (61) are surrounded by a plurality of hexagonal support frames (62), the plurality of hexagonal support frames (62) are arranged in a ring shape and are fixed upward.

6. A high temperature resistant automotive guide pin assembly as defined in claim 1, wherein: The elastic bushing (3) is made of polyurethane material, and the whole is wave-shaped.

Images