A shift cable grommet assembly for an automobile

Abstract

This utility model provides an automotive gear selector brushed gasket assembly, belonging to the field of gasket assembly technology. It includes an outer thin sheet, with an oil reservoir assembly on its outer periphery. The oil reservoir assembly includes an oil reservoir tube with a circular hole on its outer wall and micro-protrusions fixedly installed on the outer wall. This gear selector brushed gasket assembly, by designing a micro-protrusion texture on the surface of the outer thin sheet, utilizes the recessed space between the protrusions to store lubricating oil. This forms a continuous and stable lubricating film when the brushed material contacts the gasket, effectively reducing direct wear on the friction surface. Simultaneously, the annular groove structure in the oil reservoir assembly controls the amount of grease seepage, evenly replenishing the lost lubricant during continuous gear shifting, ensuring the friction surface is always in a good lubrication state, fundamentally reducing gear shifting jamming. Furthermore, the corrugated spring steel sheet, due to its elastic properties, can quickly buffer the instantaneous tensile impact generated during gear shifting, avoiding hard damage.

Description

Technical Field

[0001] This utility model relates to the field of gasket assembly technology, specifically to a brushed gasket assembly for automotive gear shifting. Background Technology

[0002] In automotive gear shifting systems, the fit between the wire mesh and the gasket assembly directly affects the smoothness and accuracy of gear shifting, as well as the lifespan of the components.

[0003] In the process of realizing this utility model, the inventors discovered that:

[0004] Traditional shift pads often suffer from a key problem: an imperfect lubrication mechanism. They either rely on the initial application of lubricating oil, which is easily lost during continuous friction and fails to form a long-lasting lubricating film, leading to dry friction or insufficient lubrication on the friction surfaces, causing shifting jerks and abnormal noises; or the grease seeps out unevenly, with some areas having too much or too little, which in turn affects friction stability. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, this utility model provides an automotive gear shift brushed gasket assembly.

[0006] Therefore, the technical solution of this utility model is as follows: an automotive gear shift brush pad assembly, including an outer thin sheet, an oil storage component provided on the outer periphery of the outer thin sheet, the oil storage component including an oil storage tube, a circular hole opened on the outer wall of the oil storage tube, micro protrusions fixedly installed on the outer wall of the oil storage tube, and grease provided inside the oil storage tube.

[0007] Preferably, the outer sheet has a spring steel sheet at its bottom, and the spring steel sheet has an inner gasket at its bottom. The spring steel sheet has a through hole two at its center, the outer sheet has a through hole three at its center, and the inner gasket has a through hole one at its center. The through hole one is aligned with the through holes two and three. The through hole one is rectangular to restrict the degree of freedom, prevent rotation during use, and ensure stability. The through holes two and three are circular to facilitate processing. In this technical solution, the three-layer structure design of the outer sheet, spring steel sheet, and inner gasket can combine the characteristics of each layer of material, and the outer sheet can provide a low-friction contact surface.

[0008] Preferably, there are multiple sets of circular holes, and the outer side of the oil reservoir is wrapped with a metal sheet made of stainless steel. In this technical solution, multiple sets of circular holes with a diameter of 0.5mm can ensure a reasonable number of grease seepage channels and ensure uniform lubrication effect.

[0009] Preferably, the grease is lithium-based grease with a temperature range of -20 to 120°C. In this technical solution, the depth and width of the annular oil reservoir are reasonably set, which can store an appropriate amount of lithium-based grease. The temperature range of -20 to 120°C of the lithium-based grease is suitable for the environment of the engine compartment.

[0010] Preferably, the outer sheet is made of polytetrafluoroethylene (PTFE), and the surface of the outer sheet is provided with micro-bump texture. The diameter of the micro-bump texture is 0.1-0.3 mm, the spacing is 0.5 mm, and the coefficient of friction of the outer sheet is ≤0.05. In this technical solution, the outer sheet is made of PTFE, which has a coefficient of friction ≤0.05, and has excellent low friction characteristics, which can reduce friction and wear between the sheet and the wire drawing process.

[0011] Preferably, the spring steel sheet has a thickness of 0.1-0.2 mm, is formed by corrugated stamping, and the inner gasket is made of nitrile rubber. The surface of the inner gasket has serrated protrusions with a height of 0.5 mm. In this technical solution, the corrugated stamped spring steel sheet with a thickness of 0.1-0.2 mm effectively buffers the axial vibration of wire drawing by utilizing the elastic properties of metal, thus preventing the gasket from being crushed.

[0012] Preferably, the outer sheet, spring steel sheet, and inner gasket are bonded together by a high-temperature vulcanization process, and the edges of all three are rounded with a radius of 0.3 mm. In this technical solution, the outer sheet, spring steel sheet, and inner gasket are bonded together by a high-temperature vulcanization process, resulting in a firm and reliable connection that is not easily separated.

[0013] Preferably, the spring steel sheet can buffer the axial vibration of the wire drawing, and the inner gasket enhances the friction with the mounting base through serrated protrusions; in this technical solution, the spring steel sheet can buffer the axial vibration of the wire drawing, reducing the damage to the gasket and wire drawing caused by the instantaneous pulling force impact during gear shifting.

[0014] Beneficial effects: Compared with the prior art, this utility model, by designing micro-protrusion texture on the surface of the outer thin sheet, utilizes the pit space between the protrusions to store lubricating oil, which can form a continuous and stable lubricating film when the wire and the gasket come into contact, effectively reducing direct wear on the friction surface; the annular groove structure in the oil storage component can control the amount of grease seepage, uniformly replenishing the lost lubricant during continuous gear shifting, ensuring that the friction surface is always in a good lubrication state, reducing gear shifting jamming from the root; the corrugated spring steel sheet, with its elastic properties, can quickly buffer the instantaneous tensile impact generated during gear shifting, avoiding hard damage; the inner gasket surface... The serrated protrusions on the surface enhance the friction with the mounting base, effectively preventing the gasket from shifting position due to wire movement. Through the synergistic effect of the multilayer composite structure (PTFE outer sheet, corrugated spring steel sheet, and nitrile rubber inner gasket), the low friction characteristics of the outer layer (friction coefficient ≤0.05) reduce wear, the spring steel sheet buffers axial vibration to prevent crushing, and the serrated protrusions of the inner layer enhance the friction with the mounting base to prevent movement. Combined with the stainless steel sealed oil reservoir and high-temperature resistant lithium-based grease, it can maintain stable performance for a long time in an environment of -20~120℃, significantly extending the service life of the gasket assembly and wire. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the other side of the structure of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 4 This is an exploded structural diagram of the present invention.

[0019] Figure 5 This is a schematic diagram of the oil storage component of this utility model.

[0020] The figure shows: 1. Inner gasket; 11. Through hole one; 2. Spring steel sheet; 21. Through hole two; 3. Outer sheet; 31. Through hole three; 4. Oil reservoir assembly; 401. Oil reservoir tube; 402. Circular hole; 403. Micro bump; 404. Grease. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings, but this embodiment should not be construed as a limitation of this utility model.

[0022] This utility model is as follows Figures 1 to 5 As shown:

[0023] A gear selector brushed pad assembly for automobiles includes an outer thin sheet 3, an oil reservoir 4 is provided on the outer periphery of the outer thin sheet 3, the oil reservoir 4 includes an oil reservoir tube 401, a circular hole 402 is opened on the outer wall of the oil reservoir tube 401, micro protrusions 403 are fixedly installed on the outer wall of the oil reservoir tube 401 (by extruding the oil reservoir tube by compression to deform it), and grease 404 is provided inside the oil reservoir tube 401;

[0024] The bottom of the outer thin sheet 3 is provided with a spring steel sheet 2, and the bottom of the spring steel sheet 2 is provided with an inner gasket 1;

[0025] In this technical solution, the three-layer structure design of the outer thin sheet 3, the spring steel thin sheet 2, and the inner gasket 1 can combine the characteristics of each layer material. The outer thin sheet 3 can provide a low-friction contact surface, the spring steel thin sheet 2 can play a buffering role, and the inner gasket 1 can enhance the connection stability with the mounting base. The three layers work together to give the gasket assembly more comprehensive performance and meet various needs in the gear shifting process.

[0026] In this embodiment, the spring steel sheet 2 has a through hole 21 at its center, the outer sheet 3 has a through hole 31 at its center, and the inner gasket 1 has a through hole 11 at its center. The through hole 11 is aligned with the through hole 21 and the through hole 31. The through hole 11 is rectangular to restrict the degree of freedom, prevent rotation during use, and ensure stability. The through holes 21 and 31 are circular to facilitate processing.

[0027] In this embodiment, there are multiple sets of circular holes 402. The outer side of the oil storage pipe 401 is wrapped with a metal sheet, and the metal sheet is made of stainless steel. The surface of the metal sheet has pores that communicate with the circular holes 402.

[0028] In this technical solution, multiple sets of circular holes 402 with a diameter of 0.5mm can ensure a reasonable number of seepage channels for grease 404, ensuring uniform lubrication effect; the outer side of the oil reservoir 401 is wrapped with stainless steel sheet, which can effectively prevent dust from entering and contaminating the grease 404, ensuring the cleanliness and effectiveness of the grease 404, and also improve the durability of the oil reservoir structure by utilizing the properties of stainless steel, thus extending the service life of the oil reservoir 4.

[0029] In this embodiment, the grease 404 is a lithium-based grease with a temperature range of -20 to 120°C.

[0030] In this technical solution, the lithium-based grease has a temperature range of -20 to 120°C, which is suitable for the engine compartment environment. It can maintain stable lubrication performance over a wide temperature range, avoid the impact of temperature changes on lubrication effect, and ensure reliable lubrication of the gasket assembly under different operating conditions.

[0031] In this embodiment, the outer sheet 3 is made of polytetrafluoroethylene, and the surface of the outer sheet 3 is provided with micro-bump texture. The diameter of the micro-bump texture is 0.1-0.3mm, the spacing is 0.5mm, and the coefficient of friction of the outer sheet 3 is ≤0.05.

[0032] In this technical solution, the outer thin sheet 3 is made of polytetrafluoroethylene, which has a coefficient of friction ≤0.05 and excellent low friction characteristics, which can reduce friction and wear between the wire and the drawing. The micro-protrusion texture design on the surface allows the lubricating oil to be stored in the pits, forming a continuous lubricating film, further enhancing the lubrication effect and extending the service life of the wire and the gasket.

[0033] In this embodiment, the thickness of the spring steel sheet 2 is 0.1-0.2mm, the spring steel sheet 2 is formed by stamping in a wave shape, the inner gasket 1 is made of nitrile rubber, and the surface of the inner gasket 1 is provided with serrated protrusions with a height of 0.5mm.

[0034] In this technical solution, the corrugated stamped spring steel sheet 2 with a thickness of 0.1-0.2mm effectively buffers the axial vibration of wire drawing by utilizing the elasticity of metal, preventing the gasket from being crushed; the inner gasket 1 is made of nitrile rubber and has serrated protrusions with a height of 0.5mm on its surface, which can enhance the friction with the mounting base, prevent the gasket from moving with the wire drawing during gear shifting, and ensure the stability of the gasket assembly.

[0035] In this embodiment, the outer sheet 3, the spring steel sheet 2, and the inner gasket 1 are bonded together by a high-temperature vulcanization process, and the edges of all three are rounded with a radius of 0.3 mm.

[0036] In this technical solution, the outer sheet 3, the spring steel sheet 2, and the inner gasket 1 are bonded together by a high-temperature vulcanization process, resulting in a firm and reliable connection that is not easily separated. The edges of all three are rounded to prevent sharp edges from scratching the outer skin of the wire drawing, thus protecting the wire drawing and extending its service life.

[0037] In this embodiment, the spring steel sheet 2 can buffer the axial vibration of wire drawing, and the inner gasket 1 enhances the friction with the mounting base through serrated protrusions.

[0038] In this technical solution, the spring steel sheet 2 can buffer the axial vibration of the wire drawing, reduce the damage to the gasket and wire drawing caused by the instantaneous tensile impact during gear shifting, and improve the stability and durability of the overall structure; the inner gasket 1 enhances the friction with the mounting base through serrated protrusions, effectively preventing the gasket from shifting and ensuring the smoothness and accuracy of the gear selection and shifting process.

[0039] When the driver performs a gear shift, a force is applied to the gasket assembly. First, the spring steel sheet 2 comes into play. Due to its corrugated stamping shape and thickness of 0.1-0.2mm, it effectively buffers the axial vibration of the wire drawing by utilizing the elasticity of the metal, reducing damage to the gasket and wire drawing caused by the instantaneous pulling impact during gear shifting, and improving the overall structural stability and durability. Simultaneously, the outer sheet 3 comes into contact with the wire drawing. The outer sheet 3 is made of polytetrafluoroethylene (PTFE), with a coefficient of friction ≤0.05, possessing excellent low-friction characteristics, which reduces frictional wear between it and the wire drawing. During relative movement between the wire drawing and the outer sheet 3, the lubricating oil stored in the pits between the micro-protrusions on the surface of the outer sheet 3 is carried out, forming a continuous lubricating film on the contact surface, further enhancing the lubrication effect. As the gear shifting operation continues... The grease 404 in the oil reservoir assembly 4 begins to function; multiple sets of circular holes 402 with a diameter of 0.5 mm are opened on the outer wall of the oil reservoir tube 401. These circular holes 402 serve as seepage channels for the grease 404. The pressure and friction generated by the relative movement between the wire and the outer sheet 3 act on the micro protrusions 403 to squeeze the oil reservoir tube. The lithium-based grease in the oil reservoir tube 401 seeps out evenly through these multiple sets of circular holes 402, and then is discharged through the pores of the metal sheet to replenish the contact surface between the outer sheet 3 and the wire, ensuring the durability of the lubrication effect; the lithium-based grease has a temperature resistance range of -20 to 120℃, which is suitable for the environment of the engine compartment. It can maintain stable lubrication performance in a wide temperature range and avoid the lubrication effect being affected by temperature changes;

[0040] Throughout the gear shifting process, the inner gasket 1 maintains good friction with the mounting base through its serrated protrusions, preventing the gasket assembly from shifting with the wire during gear shifting and ensuring the smoothness and accuracy of the gear shifting process. The low-friction contact surface provided by the outer thin sheet 3 continuously reduces friction and wear with the wire, while the spring steel sheet 2 continuously buffers the axial vibration of the wire, preventing the gasket from being crushed. The three work together to give the gasket assembly more comprehensive performance and meet various needs in the gear shifting process.

[0041] After the gear shifting operation is completed, the wire drawing stops, the force on the gasket assembly disappears, the spring steel sheet 2 returns to its natural buffer standby state, the oil reservoir 4 no longer leaks grease 404, the lubricating film on the surface of the outer sheet 3 maintains a certain amount, preparing for the next gear shifting operation, and the inner gasket 1 remains firmly in contact with the mounting base, ensuring the stability of the gasket assembly position.

[0042] Any aspects not described in detail in this specification are techniques well-known in the art.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A shift cable grommet assembly for automotive use comprising an outer sheet (3) characterised in that: The outer layer sheet (3) is provided with an oil storage assembly (4) on its outer periphery. The oil storage assembly (4) includes an oil storage pipe (401). The outer wall of the oil storage pipe (401) is provided with a circular hole (402). The outer wall of the oil storage pipe (401) is fixedly installed with micro protrusions (403). The oil storage pipe (401) is provided with grease (404).

2. The shift cable boot assembly of claim 1, wherein: The bottom of the outer sheet (3) is provided with a spring steel sheet (2), and the bottom of the spring steel sheet (2) is provided with an inner gasket (1); the center of the spring steel sheet (2) is provided with a through hole two (21), the center of the outer sheet (3) is provided with a through hole three (31), and the center of the inner gasket (1) is provided with a through hole one (11). The through hole one (11) is aligned with the through hole two (21) and the through hole three (31); and the through hole one (11) is rectangular, while the through hole two (21) and the through hole three (31) are circular.

3. The shift cable boot assembly of claim 1 or 2, wherein: There are multiple sets of the circular holes (402), and the outer side of the oil storage pipe (401) is wrapped with a metal sheet, which is made of stainless steel.

4. The shift cable boot assembly of claim 3, wherein: The grease (404) is a lithium-based grease with a temperature range of -20 to 120°C.

5. The shift cable boot assembly of claim 1 or 2 or 4, wherein: The outer sheet (3) is made of polytetrafluoroethylene (PTFE). The surface of the outer sheet (3) is provided with micro-bump texture. The diameter of the micro-bump texture is 0.1-0.3 mm and the spacing is 0.5 mm. The coefficient of friction of the outer sheet (3) is ≤0.

05.

6. The shift cable boot assembly of claim 2, wherein: The thickness of the spring steel sheet (2) is 0.1-0.2mm. The spring steel sheet (2) is formed by stamping in a wave shape. The inner gasket (1) is made of nitrile rubber. The surface of the inner gasket (1) is provided with serrated protrusions with a height of 0.5mm.

7. The shift cable boot assembly of claim 6, wherein: The outer sheet (3), spring steel sheet (2) and inner gasket (1) are bonded together by a high-temperature vulcanization process. The edges of all three are rounded with a radius of 0.3 mm.

8. The shift cable boot assembly of claim 6, wherein: The spring steel sheet (2) can buffer the axial vibration of the wire drawing, and the inner gasket (1) enhances the friction with the mounting base through the serrated protrusions (101).

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