A housing of a transmission system with a waterproof structure

Abstract

The utility model belongs to clutch technical field relates to a transmission system's casing with waterproof structure. The utility model casing passes through the synergism of engine end flywheel shell, gearbox end clutch casing and waterproof plug, effectively solved the technical problem that gearbox end clutch casing and engine end flywheel casing process hole butt joint exist gap. On the basis of guaranteeing automobile transmission system normal power transmission function, utilize waterproof plug to construct waterproof barrier, significantly improved transmission system's waterproof performance under the environment of wading, rainy day or high humidity. Avoided the outside liquid infiltration clutch casing inside to lead to internal precision movement part rust, and then caused a series of faults such as separation bearing action jam, clutch separation not thoroughly, abnormal noise and gearbox input shaft rotation resistance abnormal increase, improved transmission system's reliability, control smoothness and service life.

Description

Technical Field

[0001] This utility model belongs to the field of clutch technology and relates to a housing of a transmission system with a waterproof structure. Background Technology

[0002] In automotive transmission systems, the gearbox clutch housing and the engine flywheel housing are key connecting components for power transmission and isolation. They are typically radially positioned using a precision stop structure and secured with circumferentially distributed bolts to ensure coaxiality and connection rigidity, thus meeting the stability requirements of power transmission.

[0003] However, during the manufacturing process of the aforementioned housings, specific positioning fixture mounting holes (or process holes) are designed on the gearbox clutch housing and the engine flywheel housing to meet the positioning and clamping requirements during machining. After the two housing parts are assembled and connected, these two process holes, located on different components, will correspond to each other in spatial position. However, due to design tolerances, assembly tolerances, and the limitations of the housing's own structural function, these two holes often cannot form a tight seal at the mating point, instead leaving or forming a through gap or channel.

[0004] During vehicle operation, especially in flooded, rainy, or high-humidity environments, external water droplets, water mist, or mud containing corrosive substances can easily seep into the clutch housing through this gap. The infiltrated liquid or moisture directly contacts and adheres to the surfaces of precision moving parts such as the release bearing, bearing cover, and the gearbox's primary shaft. Over time, this leads to corrosion of these metal components, not only damaging their surface finish but also causing corrosion products to expand or become lodged in the clearances. This can result in a series of malfunctions, including stuck release bearings, incomplete clutch disengagement, abnormal noises, and even abnormally increased rotational resistance of the gearbox input shaft. These issues severely impact the reliability, smoothness of operation, and service life of the transmission system. Utility Model Content

[0005] The purpose of this utility model is to provide a housing for a transmission system with a waterproof structure to solve the technical problem of gaps existing between the process holes of the gearbox clutch housing and the engine flywheel housing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This utility model discloses a housing of a transmission system with a waterproof structure, including an engine-end flywheel housing, a gearbox-end clutch housing, and a waterproof plug that are fixedly connected. The engine-end flywheel housing has a flywheel housing process hole, the gearbox-end clutch housing has a clutch process hole, the waterproof plug is embedded in the clutch process hole, and the end of the waterproof plug covers the flywheel housing process hole.

[0007] Furthermore, the clutch process hole includes a flat process hole and a cylindrical process hole formed on and connected to the clutch housing at the gearbox end; The waterproof plug includes a flat section, a cylindrical section, and a limiting section, wherein the flat section is connected to the limiting section through the cylindrical section; The flat section is embedded in the flat process hole and covers the flywheel housing process hole, the cylindrical section is embedded in the cylindrical process hole, and the limiting section is attached to the outer surface of the gearbox end clutch housing.

[0008] Furthermore, the flat segment and the flat process hole are interference fit; the cylindrical segment and the cylindrical process hole are interference fit.

[0009] Furthermore, the outer surface of the cylindrical segment is provided with a plurality of annular grooves, which are spaced apart along the axial direction of the cylindrical segment; when the cylindrical segment is embedded in the cylindrical process hole, the annular grooves are filled with sealant.

[0010] Furthermore, the limiting segment is a circular boss, and the circular boss has a circular bottom surface. The circular bottom surface is connected to the cylindrical segment and fits against the outer surface of the gearbox end clutch housing. The flat segment has an outer side marking. After the flat segment is embedded in the flat process hole, the side of the flat segment with the outer side marking is located outside the flat process hole.

[0011] Furthermore, the waterproof plug is made of rubber.

[0012] Furthermore, an observation hole is provided on the gearbox clutch housing, and an observation hole cover is provided on the observation hole. The observation hole cover is detachably and fixedly connected to the gearbox clutch housing.

[0013] Furthermore, a sealing ring is provided between the observation hole cover and the gearbox end clutch housing, and the sealing ring is arranged around the observation hole.

[0014] Furthermore, the observation hole cover is fixed to the gearbox end clutch housing by bolts.

[0015] Furthermore, the engine-side flywheel housing and the gearbox-side clutch housing are fixedly connected by bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model effectively solves the technical problem of gaps existing between the process holes of the gearbox clutch housing and the engine flywheel housing through the synergistic action of the engine-side flywheel housing, the gearbox-side clutch housing, and the waterproof plug. While ensuring the normal power transmission function of the automotive transmission system, the waterproof barrier constructed by the waterproof plug significantly improves the waterproof performance of the transmission system in water-related, rainy, or high-humidity environments. It prevents external liquids from seeping into the clutch housing, causing corrosion of internal precision moving parts, which could lead to a series of malfunctions such as stuck release bearing, incomplete clutch disengagement, abnormal noises, and even abnormally increased rotational resistance of the gearbox input shaft. This improves the reliability, smoothness of operation, and service life of the transmission system. Attached Figure Description

[0017] Figure 1 Assembly drawing of the engine-side flywheel housing and the gearbox-side clutch housing; Figure 2 This is a partially enlarged view of the assembly drawing of the engine-side flywheel housing and the gearbox-side clutch housing; Figure 3 This is a schematic diagram of a waterproof plug structure; Figure 4 A schematic diagram of the structure after assembling waterproof plugs on the flywheel housing at the engine end and the clutch housing at the gearbox end.

[0018] Among them: 1. Engine end flywheel housing; 101. Flywheel housing process hole; 2. Gearbox end clutch housing; 201. Clutch process hole; 202. Flat process hole; 203. Cylindrical process hole; 204. Observation hole cover; 3. Waterproof plug; 301. Flat section; 302. Cylindrical section; 303. Limiting section; 304. Outer side marking; 305. Annular groove; 306. Circular bottom surface. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings: See Figure 1 , Figure 2 and Figure 4 This utility model discloses a housing for a transmission system with a waterproof structure, including a flywheel housing 1 at the engine end, a clutch housing 2 at the gearbox end, and a waterproof plug 3, all fixedly connected. The flywheel housing 1 at the engine end has a process hole 101 designed to meet the positioning and clamping requirements during machining. The clutch housing 2 at the gearbox end has a clutch process hole 201, also designed to meet the positioning and clamping requirements during machining. The waterproof plug 3 is embedded in the clutch process hole 201, with its end covering the flywheel housing process hole 101, creating an effective waterproof barrier at the gap formed by the connection of the two process holes. When the vehicle is in a water-filled, rainy, or high-humidity environment, external water droplets, water mist, or mud containing corrosive substances may attempt to seep into the clutch housing through the gap between the two process holes. The waterproof plug 3 can block the entry of these liquids, preventing them from directly contacting and adhering to the surfaces of precision moving parts such as the release bearing, bearing cover, and gearbox first shaft, thereby avoiding corrosion of these metal parts due to long-term contact with liquids.

[0022] See Figure 1 and Figure 2 In a preferred embodiment of the present invention, the clutch process hole 201 includes a flat process hole 202 and a cylindrical process hole 203 formed on and connected to the clutch housing 2 at the gearbox end. See Figure 3 The waterproof plug 3 includes a flat section 301, a cylindrical section 302 and a limiting section 303, wherein the flat section 301 is connected to the limiting section 303 through the cylindrical section 302; See Figure 4The flat segment 301 is embedded in the flat process hole 202 and covers the flywheel housing process hole 101. The cylindrical segment 302 is embedded in the cylindrical process hole 203. The limiting segment 303 is attached to the outer surface of the gearbox end clutch housing 2.

[0023] The flat section 301 covers the flywheel housing process hole 101, directly blocking external liquid from entering through the hole; the cylindrical section 302 is embedded in the cylindrical process hole 203, enhancing the connection stability between the waterproof plug and the clutch housing; the limiting section 303 fits against the outer surface of the gearbox end clutch housing 2, serving to position and prevent external liquid from entering the cylindrical process hole 203, ensuring that the waterproof plug is installed accurately and securely, effectively improving the waterproof effect.

[0024] In a preferred embodiment of this invention, the flat segment 301 and the flat process hole 202 are interference-fitted, and the cylindrical segment 302 and the cylindrical process hole 203 are interference-fitted. This effectively prevents liquid from seeping in through the gap between them.

[0025] See Figure 3 In a preferred embodiment of this utility model, the outer surface of the cylindrical segment 302 is provided with a plurality of annular grooves 305, which are spaced apart along the axial direction of the cylindrical segment 302. When the cylindrical segment 302 is embedded in the cylindrical process hole 203, the annular grooves 305 are filled with sealant to increase the sealing performance between the waterproof plug 3 and the gearbox end clutch housing 2. Even if some of the sealant ages or wears due to long-term use or environmental factors, the sealant in other annular grooves 305 can still continue to play a sealing role, extending the service life of the waterproof structure.

[0026] See Figure 3 In a preferred embodiment of this utility model, the limiting segment 303 is a circular boss with a circular bottom surface. The circular bottom surface is connected to the cylindrical segment 302 and fits against the outer surface of the gearbox end clutch housing 2, increasing the contact area and further enhancing the stability of the waterproof plug 3. Furthermore, the circular boss design facilitates the passage of the waterproof plug 3 through the cylindrical process hole 203 during assembly.

[0027] See Figure 3 In a preferred embodiment of this utility model, the flat segment 301 is provided with an outer side marking 304. After the flat segment 301 is embedded in the flat process hole 202, the side of the flat segment 301 with the outer side marking 304 is located outside the flat process hole 202. When installing the waterproof plug 3, the worker can quickly and accurately determine the correct installation direction of the flat segment 301 based on the outer side marking 304, avoiding problems such as poor sealing caused by incorrect installation direction, and improving installation efficiency and accuracy.

[0028] In a preferred embodiment of this invention, the waterproof plug 3 is made of rubber. Rubber has good elasticity and flexibility, which can better adapt to the shape of the clutch process hole 201, achieving a tight fit and improving sealing performance.

[0029] See Figure 1 In a preferred embodiment of this utility model, an observation hole is provided on the gearbox-end clutch housing 2, and an observation hole cover 204 is arranged on the observation hole. The observation hole cover 204 is detachably fixedly connected to the gearbox-end clutch housing 2. This facilitates the inspection and maintenance of the clutch interior by the operator without disassembling the entire housing. Through the observation hole, the operator can intuitively observe the operating status of the internal clutch components, such as whether there is wear, jamming, or other abnormalities in the release bearing and friction plates, so as to promptly detect and deal with potential problems, prevent the fault from escalating, and improve the maintenance efficiency and reliability of the transmission system.

[0030] In a preferred embodiment of this invention, a sealing ring is provided between the observation hole cover 204 and the gearbox-end clutch housing 2. The sealing ring is arranged around the observation hole to effectively prevent external liquid from seeping into the clutch interior through the gap between the observation hole cover 204 and the housing. The sealing ring serves a sealing and buffering function, filling the tiny gap between the two and ensuring that the clutch interior remains dry under various environmental conditions. This prevents internal components from rusting and corroding due to moisture, thus ensuring the normal operation of the transmission system.

[0031] See Figure 1 In a preferred embodiment of this utility model, the observation hole cover 204 is fixed to the clutch housing 2 at the gearbox end by bolts. The bolt fixing method facilitates disassembly and installation. When workers need to inspect or maintain the inside of the clutch, they can quickly open the observation hole cover 204 and easily fix it back afterward, improving work efficiency.

[0032] In a preferred embodiment of this invention, the engine-end flywheel housing 1 and the gearbox-end clutch housing 2 are fixedly connected by bolts. The bolted connection also facilitates disassembly and installation, allowing for quick separation of the two housings when maintenance or component replacement is required, thus improving maintenance efficiency and reducing maintenance costs.

[0033] The housing of this waterproof transmission system effectively solves the technical problem of gaps in the connection between the transmission clutch housing and the engine flywheel housing through the synergistic action of the engine-side flywheel housing 1, the transmission-side clutch housing 2, and the waterproof plug 3. While ensuring the normal power transmission function of the automotive transmission system, the waterproof barrier constructed by the waterproof plug 3 significantly improves the waterproof performance of the transmission system in wading, rainy, or high-humidity environments. This prevents external liquids from seeping into the clutch housing, causing corrosion of internal precision moving parts, which could lead to a series of malfunctions such as stuck release bearing, incomplete clutch disengagement, abnormal noises, and even abnormally increased rotational resistance of the transmission input shaft. This greatly improves the reliability, smoothness of operation, and service life of the transmission system, providing strong support for the stable operation of the vehicle in various complex environments.

[0034] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of this utility model.

Claims

1. A housing for a transmission system with a waterproof structure, characterized in that, The device includes a fixedly connected engine-end flywheel housing (1), a gearbox-end clutch housing (2), and a waterproof plug (3). The engine-end flywheel housing (1) has a flywheel housing process hole (101), the gearbox-end clutch housing (2) has a clutch process hole (201), and the waterproof plug (3) is embedded in the clutch process hole (201). The end of the waterproof plug (3) covers the flywheel housing process hole (101).

2. The housing of a transmission system with a waterproof structure according to claim 1, characterized in that, The clutch process hole (201) includes a flat process hole (202) and a cylindrical process hole (203) formed on and connected to the clutch housing (2) at the gearbox end. The waterproof plug (3) includes a flat section (301), a cylindrical section (302) and a limiting section (303), wherein the flat section (301) is connected to the limiting section (303) through the cylindrical section (302); The flat segment (301) is embedded in the flat process hole (202) and covers the flywheel housing process hole (101), the cylindrical segment (302) is embedded in the cylindrical process hole (203), and the limiting segment (303) is attached to the outer surface of the gearbox end clutch housing (2).

3. The housing of a transmission system with a waterproof structure according to claim 2, characterized in that, The flat section (301) and the flat process hole (202) are interference fit; the cylindrical section (302) and the cylindrical process hole (203) are interference fit.

4. The housing of a transmission system with a waterproof structure according to claim 2, characterized in that, The outer surface of the cylindrical segment (302) is provided with a plurality of annular grooves (305), which are spaced apart along the axial direction of the cylindrical segment (302); when the cylindrical segment (302) is embedded in the cylindrical process hole (203), the annular grooves (305) are filled with sealant.

5. The housing of a transmission system with a waterproof structure according to claim 2, characterized in that, The limiting section (303) is a circular boss with a circular bottom surface. The circular bottom surface is connected to the cylindrical section (302) and fits against the outer surface of the gearbox end clutch housing (2). The flat segment (301) is provided with an outer side mark (304). After the flat segment (301) is embedded in the flat process hole (202), the side of the flat segment (301) with the outer side mark (304) is located outside the flat process hole (202).

6. The housing of a transmission system with a waterproof structure according to claim 1, characterized in that, The waterproof plug (3) is made of rubber.

7. The housing of a transmission system with a waterproof structure according to claim 1, characterized in that, An observation hole is provided on the gearbox end clutch housing (2), and an observation hole cover (204) is arranged on the observation hole. The observation hole cover (204) and the gearbox end clutch housing (2) are detachably fixedly connected.

8. The housing of a transmission system with a waterproof structure according to claim 7, characterized in that, A sealing ring is provided between the observation hole cover (204) and the gearbox end clutch housing (2), and the sealing ring is arranged around the observation hole.

9. The housing of a transmission system with a waterproof structure according to claim 7, characterized in that, The observation hole cover (204) is fixed to the gearbox end clutch housing (2) by bolts.

10. The housing of a transmission system with a waterproof structure according to claim 1, characterized in that, The engine-end flywheel housing (1) and the gearbox-end clutch housing (2) are fixedly connected by bolts.

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