A sealing structure of a wet type double clutch water channel and oil chamber for an automobile

Abstract

The utility model discloses a kind of sealing structure of wet type double clutch waterway and oil cavity for automobile, it is related to clutch sealing technical field, including clutch housing and clutch cover, the inside lower side of the clutch housing is located at the clutch cover, and the side of the clutch cover and the clutch housing are fixedly connected by fastening assembly between;The upper end of the clutch cover and clutch housing is formed with clutch cavity and waterway between, and the waterway is arranged around the outer periphery of the clutch cavity;Sealing assembly is equipped on the left and right sides of the bottom of the waterway, for preventing engine coolant from leaking into clutch cavity. The sealing structure of wet type double clutch waterway and oil cavity for automobile, while guaranteeing that wet type double clutch can reliably radiate heat, realizes the effective isolation of oil-water medium, solves the technical problems, such as complex structure, high cost, sealing unreliable and the like in prior art, has outstanding practicality and industrialization value.

Description

Technical Field

[0001] This utility model relates to the field of clutch sealing technology, specifically a sealing structure for the water passage and oil chamber of a wet dual clutch for automobiles. Background Technology

[0002] A wet dual-clutch transmission consists of a dual-clutch chamber and a transmission gear chamber. During vehicle operation, the dual-clutch system frequently performs gear shifting operations, continuously engaging and disengaging the clutch plates, generating a large amount of frictional heat. If this heat cannot be dissipated effectively and in a timely manner, the oil temperature inside the clutch chamber will rise sharply, leading to lubricant oxidation and deterioration, friction material ablation, and even adhesion failure. In severe cases, it can damage the entire transmission assembly.

[0003] To address the aforementioned heat dissipation issues, existing technologies typically incorporate a dedicated cooling water channel structure along the circumference of the clutch assembly. This utilizes the coolant from the engine cooling system as an external cooling medium to forcibly dissipate heat from the clutch housing area. While this approach effectively improves thermal management capabilities, it also introduces new technical challenges. Since the engine coolant needs to be introduced into the transmission, and the transmission itself contains lubricating oil used for lubrication and hydraulic control, the significant differences in their physicochemical properties mean that mixing can not only damage the lubricating and hydraulic properties of the lubricating oil but also potentially cause malfunctions in the control system or corrosion of components, ultimately leading to transmission failure or even safety accidents.

[0004] Therefore, when introducing cooling water circuits, it is essential to achieve reliable isolation between the coolant and lubricating oil within a limited space. However, commonly used isolation structures often rely on complex metal partitions, multi-layer gaskets, or customized irregular-shaped seals. These not only involve a large number of parts and high assembly precision requirements, but also have complex manufacturing processes and high costs, making it difficult to meet the requirements of economy and consistency for mass production.

[0005] Therefore, we propose a sealing structure for the water passage and oil chamber of a wet dual-clutch for automobiles to solve the problems mentioned above. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model: The purpose of this invention is to provide a sealing structure for the water passage and oil chamber of a wet dual clutch for automobiles, so as to solve the problems currently found in the market as described in the background.

[0007] 2. Technical Solution: To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for the water passage and oil chamber of a wet dual-clutch for automobiles, comprising a clutch housing and a clutch cover, wherein the clutch cover is located on the lower inner side of the clutch housing, and a fastening assembly is fixedly connected between the side of the clutch cover and the clutch housing. A clutch cavity and a water passage are formed between the upper end of the clutch cover and the clutch housing, and the water passage is arranged around the outer periphery of the clutch cavity. The water passage is equipped with sealing components on both the left and right sides near its bottom to prevent engine coolant from leaking into the clutch chamber.

[0008] Furthermore, the fastening assembly includes multiple connecting parts and fixing bolts corresponding to the connecting parts; The connecting parts are distributed at equal angles along the circumference on the outer side of the middle part of the clutch cover; The fixing bolt passes through the connection and is screwed into the clutch housing to achieve a reliable fastening between the clutch cover and the clutch housing.

[0009] The above technical solution allows the clutch cover to be fixed to the clutch housing through the cooperation of fixing bolts and connecting parts.

[0010] Furthermore, the clutch housing is provided with a water inlet and a water outlet, and one end of the water passage is connected to the water inlet, and the other end of the water passage is connected to the water outlet, so as to form a complete cooling water circulation channel.

[0011] The above technical solution enables the coolant to circulate in a forced manner, which can quickly remove heat.

[0012] Furthermore, the sealing assembly includes mounting groove one, mounting groove two, sealing ring one, and sealing ring two; The mounting groove is formed on the inner wall of the upper end of the clutch cover and is used to fit the sealing ring. The second mounting groove is formed on the outer wall of the upper end of the clutch cover and is used to fit the second sealing ring. The first sealing ring is used to isolate the inner boundary of the clutch chamber from the water passage, and the second sealing ring is used to isolate the outer boundary of the water passage from the external environment.

[0013] The above technical solution enables the use of a double-seal design, effectively isolating the oil and water in the clutch chamber from mixing and preventing transmission malfunction.

[0014] Furthermore, both the sealing ring one and the sealing ring two are "O"-shaped sealing rings made of high-temperature resistant and oil-resistant rubber material, and their cross-sectional dimensions match the corresponding mounting groove one and mounting groove two.

[0015] The above technical solutions ensure a good sealing effect.

[0016] 3. Beneficial effects: Compared with the prior art, the sealing structure of the water channel and oil chamber of the wet dual-clutch for automobiles provided by this utility model can effectively isolate the oil and water media while ensuring reliable heat dissipation of the wet dual-clutch. It solves the technical problems of complex structure, high cost and unreliable sealing in the prior art, and has outstanding practicality and industrialization value. The specific contents are as follows: By integrating a double sealing groove structure on the clutch cover and using a standard "O" ring seal, the traditional complex isolation components are replaced, which greatly reduces the manufacturing difficulty and material cost. The double sealing design of the inner and outer channels independently seals the oil chamber and water passage, and the water passage and external environment, preventing the oil and water in the clutch chamber from mixing and avoiding transmission failure. (2) Both sealing ring 1 and sealing ring 2 are made of general-purpose high temperature and oil resistant rubber material, which is suitable for high temperature and high humidity conditions in the engine compartment and has good compatibility with the existing transmission platform. (3) The clutch cover is connected to the clutch housing by multiple fixing bolts, which makes it easy to disassemble and install, and facilitates later maintenance or replacement of the sealing ring; (4) The water channel is arranged around the clutch cavity in a circumferential manner, and the cooling path is close to the heat source. Combined with the forced circulation formed by the water inlet and outlet, heat can be quickly discharged, effectively preventing clutch burning and playing the role of cooling the clutch, so that the transmission can work normally. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a schematic diagram of the clutch cover structure of this utility model; Figure 4 This is a side sectional view of the present invention. Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Clutch housing; 2. Clutch cover; 21. Mounting slot one; 22. Mounting slot two; 3. Connecting part; 4. Fixing bolt; 5. Clutch cavity; 6. Sealing ring one; 7. Sealing ring two; 8. Water passage; 9. Water inlet; 10. Water outlet. Detailed Implementation

[0019] To facilitate understanding of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" 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 mechanical connection or an electrical 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. Example

[0023] Please see Figure 1-5A sealing structure for the water passage and oil chamber of a wet dual-clutch transmission for automobiles includes a clutch housing 1 and a clutch cover 2. The clutch cover 2 is located on the lower inner side of the clutch housing 1, and the side of the clutch cover 2 is fixedly connected to the clutch housing 1 by a fastening assembly. A clutch cavity 5 and a water passage 8 are formed between the upper end of the clutch cover 2 and the clutch housing 1. The water passage 8 is arranged around the outer periphery of the clutch cavity 5. Sealing assemblies are provided on both the left and right sides of the water passage 8 near its bottom to prevent engine coolant from leaking into the clutch cavity 5. The sealing assembly includes a mounting groove 21. The clutch cover 2 consists of mounting groove 22, sealing ring 6, and sealing ring 7. Mounting groove 21 is located on the inner wall of the upper end of the clutch cover 2 and is used to install sealing ring 6. Mounting groove 22 is located on the outer wall of the upper end of the clutch cover 2 and is used to install sealing ring 7. Sealing ring 6 is used to isolate the inner boundary between the clutch cavity 5 and the water passage 8, and sealing ring 7 is used to isolate the outer boundary between the water passage 8 and the external environment. Sealing ring 6 and sealing ring 7 are both "O"-shaped sealing rings made of high-temperature resistant and oil-resistant rubber material, and their cross-sectional dimensions match the corresponding mounting groove 21 and mounting groove 22. Two independent chambers are formed between the upper end of the clutch cover 2 and the clutch housing 1: the inner chamber is the clutch cavity 5, which contains transmission lubricating oil, and the outer chamber is the water passage 8 arranged around the clutch cavity 5. To prevent the coolant and lubricating oil from mixing, a sealing ring 6 and a sealing ring 7 are respectively embedded in the two grooves at the upper end of the clutch cover 2, and they form an interference fit after assembly. The sealing ring 6 is located at the inner interface between the clutch cavity 5 and the water passage 8, effectively preventing oil from entering the water passage 8; the sealing ring 7 is located at the outer boundary of the water passage 8, preventing coolant from leaking to other areas of the transmission. The two seals together form a double sealing barrier to ensure complete isolation of oil and water media. The fastening assembly includes multiple connecting parts 3 and fixing bolts 4 corresponding to the connecting parts 3; the connecting parts 3 are distributed at equal angles along the circumference on the outer side of the middle part of the clutch cover 2; the fixing bolts 4 pass through the connecting parts 3 and are screwed into the clutch housing 1 to achieve reliable fastening between the clutch cover 2 and the clutch housing 1. The clutch cover 2 is connected to the clutch housing 1 by multiple fixing bolts 4, which makes it easy to disassemble and install, and facilitates later maintenance or replacement of the sealing ring. The clutch housing 1 is provided with a water inlet 9 and a water outlet 10, and one end of the water passage 8 is connected to the water inlet 9, and the other end of the water passage 8 is connected to the water outlet 10, so as to form a complete cooling water circulation channel. The water channel 8 is arranged circumferentially around the clutch chamber 5, and the cooling path is close to the heat source. Combined with the forced circulation formed by the inlet 9 and outlet 10, heat can be quickly dissipated, effectively preventing clutch burning and cooling the clutch, so that the transmission can work normally.

[0024] Working principle: When using the sealing structure of the water passage and oil chamber of this automotive wet dual clutch, such as Figure 1-5 As shown, a clutch cover 2 is installed on the lower side of the clutch housing 1. The two are fastened together by connecting parts 3 and fixing bolts 4 distributed at equal angles along the circumference. Two independent chambers are formed between the upper end of the clutch cover 2 and the clutch housing 1. The inner chamber is the clutch cavity 5 which contains transmission lubricating oil, and the outer chamber is the water channel 8 arranged around the clutch cavity 5. Engine coolant flows into water passage 8 through inlet 9 on clutch housing 1, flows through annular water channel and flows out from outlet 10, thereby carrying away the heat generated by frequent gear shifting in clutch chamber 5, achieving efficient heat dissipation; wherein, sealing ring 1 6 and sealing ring 2 7 are embedded in the two grooves at the upper end of clutch cover 2, the two seals together form a double sealing barrier, preventing the oil and coolant in clutch chamber 5 from mixing, thus preventing transmission malfunction.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A sealing structure for the water passage and oil chamber of a wet dual-clutch transmission for automobiles, characterized in that: Includes a clutch housing (1) and a clutch cover (2), the clutch cover (2) being located on the lower inner side of the clutch housing (1), and the side of the clutch cover (2) and the clutch housing (1) being fixedly connected by a fastening assembly; A clutch cavity (5) and a water passage (8) are formed between the upper end of the clutch cover (2) and the clutch housing (1), and the water passage (8) is arranged around the outer periphery of the clutch cavity (5). The water passage (8) is provided with sealing components on both the left and right sides near its bottom to prevent engine coolant from leaking into the clutch chamber (5).

2. The sealing structure for the water passage and oil chamber of a wet dual-clutch automobile according to claim 1, characterized in that: The fastening assembly includes multiple connecting parts (3) and fixing bolts (4) corresponding to the connecting parts (3); The connecting part (3) is distributed at equal angles along the circumference on the outer side of the middle part of the clutch cover (2); The fixing bolt (4) passes through the connecting part (3) and is screwed into the clutch housing (1) to achieve a reliable fastening between the clutch cover (2) and the clutch housing (1).

3. The sealing structure for the water passage and oil chamber of a wet dual-clutch automobile according to claim 1, characterized in that: The clutch housing (1) is provided with an inlet (9) and an outlet (10), and one end of the water passage (8) is connected to the inlet (9), and the other end of the water passage (8) is connected to the outlet (10) to form a complete cooling water circulation channel.

4. The sealing structure for the water passage and oil chamber of a wet dual-clutch automobile according to claim 1, characterized in that: The sealing assembly includes mounting groove one (21), mounting groove two (22), sealing ring one (6) and sealing ring two (7); The mounting groove (21) is opened on the inner wall of the upper end of the clutch cover (2) for fitting the sealing ring (6). The second mounting groove (22) is opened on the outer wall of the upper end of the clutch cover (2) for fitting the second sealing ring (7). The first sealing ring (6) is used to isolate the inner boundary of the clutch chamber (5) and the water passage (8), and the second sealing ring (7) is used to isolate the outer boundary of the water passage (8) and the external environment.

5. The sealing structure for the water passage and oil chamber of a wet dual-clutch automobile according to claim 4, characterized in that: Both the sealing ring 1 (6) and the sealing ring 2 (7) are "O"-shaped sealing rings made of high-temperature and oil-resistant rubber material, and their cross-sectional dimensions match the corresponding mounting groove 1 (21) and mounting groove 2 (22).

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