Sealing structure for input shaft of automotive transmission

Abstract

The utility model relates to the technical field of vehicle transmission input shaft sealing structures, and discloses a vehicle transmission input shaft sealing structure which comprises an input shaft, one side of the middle of the input shaft is in sliding connection with an input shaft opening, and one end of the input shaft opening is in threaded connection with an inner sealing mechanism through a screw. The other end of the input shaft is in threaded connection with an outer sealing mechanism through a screw, the inner sealing mechanism comprises an inner sealing ring, one end of the inner sealing ring is in threaded connection with one end of an input shaft opening through a screw, the outer sealing mechanism comprises an outer sealing ring, one end of the outer sealing ring is in threaded connection with the other end of the input shaft opening through a screw, and the other end of the outer sealing ring is in threaded connection with the other end of the input shaft opening through a screw. The inner ring of the outer sealing ring is fixedly connected with a second rubber ring. In the utility model, the inner sealing ring can seal the input shaft interface between the input shaft and the gearbox to ensure that the internal lubricating liquid does not leak and is prevented from being evaporated, and the outer sealing mechanism further ensures the sealing property of the device and ensures that dust does not enter the device.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle transmission input shaft sealing structure, in particular to a vehicle transmission input shaft sealing structure. Background Art

[0002] The automotive transmission input shaft seal structure is a device used to seal the transmission input shaft and the external environment. Its main function is to prevent lubricating oil from leaking from the transmission and prevent external impurities from entering the transmission. This technology is often used in automotive transmissions.

[0003] The existing structure has a sealing ring, which is a key component of the sealing structure and is usually made of elastic materials such as rubber or polyurethane. It surrounds the input shaft and forms a sealing contact with the surface of the input shaft to prevent lubricating oil leakage and prevent external contaminants from entering the transmission, thus ensuring the sealing of the device;

[0004] The traditional vehicle transmission input shaft sealing structure often lacks an external sealing structure, which easily causes dust to enter the device. Secondly, due to the complex design of the traditional device, it is more troublesome to repair and needs to be replaced in time after wear. Therefore, a vehicle transmission input shaft sealing structure is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a vehicle transmission input shaft sealing structure, aiming to improve the problems in the prior art of lack of external sealing devices, complex design, and the need for replacement of some temporary structures after wear.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vehicle transmission input shaft sealing structure, including an input shaft, a middle side of the input shaft is slidably connected with an input shaft opening, one end of the input shaft opening is connected with an inner sealing mechanism through a screw thread, and the other end of the input shaft is connected with an outer sealing mechanism through a screw thread, the inner sealing mechanism includes an inner sealing ring, one end of the inner sealing ring is connected to one end of the input shaft opening through a screw thread, and the outer sealing mechanism includes an outer sealing ring, one end of the outer sealing ring is connected to the other end of the input shaft opening through a screw thread.

[0007] The input shaft and input shaft opening ensure the normal operation of the car. The external sealing mechanism ensures the sealing of the device and prevents external dust and pollutants from entering the device that needs to be sealed. Secondly, the internal sealing mechanism ensures that the lubricating fluid in the sealed device will not leak out. The internal sealing ring ensures that the internal sealing mechanism is fixed at the input shaft opening, and the external sealing ring ensures that its external sealing mechanism can be fixed at the input shaft opening.

[0008] As a further description of the above technical solution: the inner ring of the inner sealing ring is fixedly connected with a rubber ring 1, and the middle part of one end of the inner sealing ring is fixedly connected with an inner triangular ring seal.

[0009] The rubber ring fits tightly with the input shaft to ensure that the lubricating fluid inside it will not leak. The inner triangular ring seal can further seal the input shaft opening and the input shaft interface.

[0010] As a further description of the above technical solution: one end of the inner sealing ring is fixedly connected to a limiting ring, a rubber ring is arranged inside the limiting ring, and the rubber ring is arranged on one side of the middle part of the rubber ring.

[0011] The limiting ring ensures that the rubber ring in the inner sealing mechanism squeezes the rubber ring 1 and the inner sealing ring, ensuring that the inner sealing mechanism fits better with the input shaft and the input shaft opening;

[0012] As a further description of the above technical solution: the inner wall of the limit ring is slidably connected to a pressure ring, the inner side of the pressure ring is slidably connected to the outer wall of the rubber ring, and one end of the pressure ring is fixedly connected to a fixing ring.

[0013] The pressure ring can squeeze the rubber ring, so that the rubber ring can squeeze the inner sealing ring and the rubber ring 1. The fixed ring ensures that the pressure ring can move to one side to squeeze the rubber ring. Since the fixed ring is connected to the limit ring through screw threads, it is ensured that the pressure ring will not rebound, which better ensures the sealing of the device. When it is worn, it only needs to tighten the screws and then squeeze the outer sealing ring and the rubber ring 2, that is, it has a sealing effect;

[0014] As a further description of the above technical solution: the inner end of the rubber ring 1 is slidably connected to the input shaft, the inner wall of the fixing ring is slidably connected to the rubber ring 1, and one end of the fixing ring is threadedly connected to one end of the limit ring through a screw.

[0015] The inner end of the rubber ring 1 is slidably connected to the input shaft, the inner wall of the fixed ring is slidably connected to the rubber ring 1, and one end of the fixed ring is connected to the limit ring through a screw thread, ensuring that the inner sealing mechanism can be disassembled, repaired and replaced conveniently;

[0016] As a further description of the above technical solution: an outer fixing ring is fixedly connected to the middle of the outer sealing ring, and a fixing ring 2 is fixedly connected to one side of the middle of the outer wall of the outer fixing ring.

[0017] The outer fixing ring ensures that the outer slope circular protrusion and the inner slope groove can be combined to effectively squeeze the rubber ring 2 and the outer sealing ring, and the fixing ring 2 ensures that the fastening plate can squeeze the outer slope circular protrusion without rebounding;

[0018] As a further description of the above technical solution: an inner slope groove is provided on the inner side of the outer fixed ring, a rubber ring 2 is fixedly connected to the inner ring wall of the outer sealing ring, the inner slope groove is provided on the outer side of the rubber ring 2, and the inner ring wall of the rubber ring 2 is slidably connected to the input shaft.

[0019] The inner slope groove, under the extrusion of the outer slope circular protrusion, will make the outer sealing ring close to the input shaft opening, and make the rubber ring 2 close to the input shaft, ensuring good external sealing. The rubber ring 2 is guaranteed to be close to the input shaft to achieve a sealing effect;

[0020] As a further description of the above technical solution: one end of the fixing ring 2 is connected to a fastening disk through a screw thread, and an outer slope circular protrusion is fixedly connected to the middle of one end of the fastening disk, and the slope of the outer slope circular protrusion is slidably connected to the slope of the inner slope groove.

[0021] One end of the second fixing ring is connected with a fastening disk through a screw thread to ensure that when the fastening disk squeezes the outer slope circular protrusion and the inner slope groove, the fastening disk will not move in the opposite direction due to the squeezing, thereby ensuring that it achieves better sealing. The outer slope circular protrusion can squeeze the inner slope groove to ensure that it can squeeze the outer sealing ring and the second rubber ring, and when it is worn, it only needs to tighten the screw and then squeeze the outer sealing ring and the second rubber ring to achieve a sealing effect.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the rubber ring, rubber ring, inner sealing ring and limit ring are driven to work by the structural fixing ring and the pressure ring, so that the sealing structure is simple. When the fixing ring and the pressure ring are worn, the sealing can be realized again by increasing the extrusion of the fixing ring and the pressure ring, so that the disassembly and maintenance are convenient.

[0024] 2. In the utility model, with the cooperation of the fastening disk, the outer slope circular protrusion, the inner slope groove and the structure in the outer sealing mechanism, the outer sealing ring, the second rubber ring, the second fixing ring, the outer sealing ring and the outer fixing ring work to solve the problem that the traditional device lacks an external mechanism, which leads to the entry of dust and pollutants into the sealed device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an overall schematic diagram of the vehicle transmission input shaft sealing structure proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the overall disassembly of the vehicle transmission input shaft sealing structure proposed by the utility model;

[0027] Figure 3 It is a front view of the inner sealing mechanism of the vehicle transmission input shaft sealing structure proposed by the utility model;

[0028] Figure 4 A side view of the inner sealing mechanism of the vehicle transmission input shaft sealing structure proposed by the utility model;

[0029] Figure 5 This is a schematic diagram of the overall disassembly of the outer sealing structure of the vehicle transmission input shaft sealing structure proposed by the utility model;

[0030] Figure 6 It is a partial schematic diagram of the outer sealing structure of the vehicle transmission input shaft sealing structure proposed by the utility model.

[0031] Legend:

[0032] 1. Input shaft; 2. Input shaft opening; 3. Inner sealing mechanism; 301. Inner triangular ring seal; 302. Inner sealing ring; 303. Limiting ring; 304. Rubber ring 1; 305. Rubber ring; 306. Pressure ring; 307. Fixed ring; 4. Outer sealing mechanism; 401. Outer sealing ring; 402. Outer fixed ring; 403. Fixed ring 2; 404. Inner slope groove; 405. Rubber ring 2; 406. Outer slope circular protrusion; 407. Fastening plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1-Figure 4 The utility model provides an embodiment: a vehicle transmission input shaft sealing structure, including an input shaft 1, an input shaft port 2 is slidably connected to one side of the middle part of the input shaft 1, one end of the input shaft port 2 is connected to an inner sealing mechanism 3 through a screw thread, and the other end of the input shaft 1 is connected to an outer sealing mechanism 4 through a screw thread, the inner sealing mechanism 3 includes an inner sealing ring 302, one end of the inner sealing ring 302 is connected to one end of the input shaft port 2 through a screw thread, and the outer sealing mechanism 4 includes an outer sealing ring 401, one end of the outer sealing ring 401 is connected to the other end of the input shaft port 2 through a screw thread.

[0035] The outer sealing mechanism 4 ensures the sealing of the device to be sealed, and does not allow external dust and pollutants to enter the device to be sealed, which will affect the device. Secondly, the inner sealing mechanism 3 ensures that the lubricating fluid in the sealed device will not leak out, thereby affecting the normal operation of the device. The inner sealing ring 302 ensures that the inner sealing mechanism 3 is fixed at the input shaft port 2, and the outer sealing ring 401 ensures that the outer sealing mechanism 4 can be fixed at the input shaft port 2.

[0036] Reference Figure 4-Figure 6 , the inner ring of the inner sealing ring 302 is fixedly connected with a rubber ring 1 304, and the middle of one end of the inner sealing ring 302 is fixedly connected with an inner triangular ring seal 301. One end of the inner sealing ring 302 is fixedly connected with a limit ring 303, and a rubber ring 305 is arranged inside the limit ring 303, and the rubber ring 305 is arranged on one side of the middle of the rubber ring 1 304. The middle of the outer sealing ring 401 is fixedly connected with an outer fixed ring 402, and a fixed ring 2 403 is fixedly connected to one side of the middle of the outer wall of the outer fixed ring 402. An inner slope groove 404 is arranged on the inner side of the outer fixed ring 402, and a rubber ring 2 405 is fixedly connected on the inner ring wall of the outer sealing ring 401, and the inner slope groove 404 is arranged on the outer side of the rubber ring 2 405, and the inner ring wall of the rubber ring 2 405 is slidably connected to the input shaft 1. One end of the second fixing ring 403 is connected to a fastening plate 407 by screw threads, and an outer slope circular protrusion 406 is fixedly connected to the middle of one end of the fastening plate 407 . The slope of the outer slope circular protrusion 406 is slidably connected to the slope of the inner slope groove 404 .

[0037] The rubber ring 1 304 fits tightly with the input shaft 1 to ensure that the lubricating fluid inside it will not leak. The inner triangular ring seal 301 can further seal the interface between the input shaft opening 2 and the input shaft 1. The limiting ring 303 ensures that the rubber ring 305 in the inner sealing mechanism 3 squeezes the rubber ring 1 304 and the inner sealing ring 302 to ensure that the inner sealing mechanism 3 fits the input shaft 1 and the input shaft opening 2 better. The pressure ring 306 can squeeze the rubber ring 305, so that the rubber ring 305 can squeeze the inner sealing ring 302 and the rubber ring 1 304. The fixed ring 307 ensures that the pressure ring 306 can move to one side to squeeze the rubber ring 305. Since the fixed ring 307 is connected to the limiting ring 303 by screw threads, it is ensured that the pressure ring 306 will not rebound, which better ensures the sealing of the device. When it is worn, it only needs to tighten the screws and then squeeze the outer sealing ring 401 and the rubber ring 2 405, that is, it has a sealing effect. The outer fixed ring 402 ensures that the outer slope circular protrusion 406 and the inner slope groove 404 can be combined and the extrusion of the rubber ring 2 405 and the outer sealing ring 401 is effective, and the fixed ring 2 403 ensures that the fastening disk 407 can squeeze the outer slope circular protrusion 406 without rebounding. Under the extrusion of the outer slope circular protrusion 406, the inner slope groove 404 will make the outer sealing ring 401 close to the input shaft opening 2, and the rubber ring 2 405 close to the input shaft 1, ensuring good external sealing. The rubber ring 2 405 ensures that it is close to the input shaft 1 to achieve a sealing effect. One end of the fixed ring 2 403 is connected to the fastening disk 407 through a screw thread, ensuring that when the fastening disk 407 squeezes the outer slope circular protrusion 406 and the inner slope groove 404, the fastening disk 407 will not move in the opposite direction due to the extrusion, ensuring that it can achieve better sealing. The outer slope circular protrusion 406 can squeeze the inner slope groove 404 to ensure that it can squeeze the outer sealing ring 401 and the second rubber ring 405. When there is wear, just tighten the screws and squeeze the outer sealing ring 401 and the second rubber ring 405 to achieve a sealing effect.

[0038] Reference Figure 4 The inner end of the rubber ring 304 is slidably connected to the input shaft 1, the inner wall of the fixing ring 307 is slidably connected to the rubber ring 304, and one end of the fixing ring 307 is threadedly connected to one end of the limit ring 303 through a screw.

[0039] The inner end of the rubber ring 304 is slidably connected to the input shaft 1, the inner wall of the fixed ring 307 is slidably connected to the rubber ring 304, and one end of the fixed ring 307 is threadedly connected to the limit ring 303 through a screw, ensuring that the inner sealing mechanism 3 can be disassembled, inspected and replaced conveniently.

[0040] Working principle: First, fix the inner triangular ring seal 301 to the middle of one end of the inner sealing ring 302, and fix the limit ring 303 to the middle of the other end of the inner sealing ring 302. Use screws to connect the inner sealing ring 302 and the input shaft opening 2. At this time, the inner triangular ring seal 301 will be tightly attached to the interface between the input shaft opening 2 and the input shaft 1, ensuring its good sealing performance. Secondly, put the rubber ring 305 on one side of the middle part of the rubber ring 1 304, thread the fixing ring 307 on the limit ring 303, tighten the screws, let the fixing ring 307 and the pressure ring 306 squeeze the rubber ring 305, so that the rubber ring 305 squeezes the rubber ring 1 304 and the input shaft 1 and the input shaft opening 2, and strengthens its fit between the input shaft 1 and the input shaft opening 2. Secondly, fix the outer sealing ring 401 on the input shaft opening 2, the outer fixed ring 402 on the middle of one end of the outer sealing ring 401, fix the second fixed ring 403 on one side of the middle of the outer fixed ring 402, and fix the second rubber ring 405 on the inner wall of the outer sealing ring 401. Put the second rubber ring 405 between the input shaft opening 2 and the outer fixed ring 402, and then thread the fastening plate 407 on the second fixed ring 403, so that the outer slope circular protrusion 406 squeezes the inner slope groove 404, and the inner slope groove 404 squeezes the outer sealing ring 401 and the second rubber ring 405, so as to strengthen the fit of the second rubber ring 405 to the input shaft 1, the fit of the outer sealing ring 401 to the input shaft opening 2, and strengthen its sealing performance.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle transmission input shaft sealing structure, comprising an input shaft (1), characterized in that: An input shaft opening (2) is slidably connected to one side of the middle portion of the input shaft (1); one end of the input shaft opening (2) is connected to an inner sealing mechanism (3) via a screw thread; the other end of the input shaft (1) is connected to an outer sealing mechanism (4) via a screw thread; the inner sealing mechanism (3) comprises an inner sealing ring (302); one end of the inner sealing ring (302) is connected to one end of the input shaft opening (2) via a screw thread; the outer sealing mechanism (4) comprises an outer sealing ring (401); one end of the outer sealing ring (401) is connected to the other end of the input shaft opening (2) via a screw thread.

2. The vehicle transmission input shaft sealing structure according to claim 1, characterized in that: The inner ring of the inner sealing ring (302) is fixedly connected to a rubber ring 1 (304), and the middle part of one end of the inner sealing ring (302) is fixedly connected to an inner triangular ring seal (301).

3. The vehicle transmission input shaft sealing structure according to claim 1, characterized in that: One end of the inner sealing ring (302) is fixedly connected to a limiting ring (303), a rubber ring (305) is arranged inside the limiting ring (303), and the rubber ring (305) is arranged on one side of the middle part of the rubber ring (304).

4. The vehicle transmission input shaft sealing structure according to claim 3, characterized in that: The inner wall of the limiting ring (303) is slidably connected to a pressure ring (306), the inner side of the pressure ring (306) is slidably connected to the outer wall of the rubber ring (304), and one end of the pressure ring (306) is fixedly connected to a fixing ring (307).

5. The vehicle transmission input shaft sealing structure according to claim 4, characterized in that: The inner end of the rubber ring 1 (304) is slidably connected to the input shaft (1), the inner wall of the fixing ring (307) is slidably connected to the rubber ring 1 (304), and one end of the fixing ring (307) is threadedly connected to one end of the limiting ring (303) via a screw.

6. The vehicle transmission input shaft sealing structure according to claim 1, characterized in that: The middle of the outer sealing ring (401) is fixedly connected to an outer fixing ring (402), and one side of the middle of the outer wall of the outer fixing ring (402) is fixedly connected to a second fixing ring (403).

7. The vehicle transmission input shaft sealing structure according to claim 6, characterized in that: An inner slope groove (404) is provided on the inner side of the outer fixed ring (402); a second rubber ring (405) is fixedly connected to the inner ring wall of the outer sealing ring (401); the inner slope groove (404) is provided on the outer side of the second rubber ring (405); and the inner ring wall of the second rubber ring (405) is slidably connected to the input shaft (1).

8. The vehicle transmission input shaft sealing structure according to claim 6, characterized in that: One end of the second fixing ring (403) is connected to a fastening disk (407) via a screw thread, and an outer slope circular protrusion (406) is fixedly connected to the middle of one end of the fastening disk (407), and the slope of the outer slope circular protrusion (406) is slidably connected to the slope of the inner slope groove (404).

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