Novel transmission shaft universal joint capable of preventing oil leakage

Abstract

The utility model discloses a novel transmission shaft universal joint capable of preventing oil leakage, which relates to the field of transmission shaft universal joints and comprises a shaft body, a plurality of shaft necks are symmetrically arranged on the outer wall of the shaft body, sleeves are sleeved on the outer walls of the shaft necks, an oil groove is arranged in the shaft body, and oil conveying pipes communicated with the oil groove are arranged in the shaft necks. Oil absorption cotton is arranged in the sleeve, a punching block is elastically arranged in the oil conveying pipe, and a punching groove for the punching block to slide is formed in the sleeve. Redundant lubricating oil can be absorbed under the action of the oil absorption cotton, the situation of leakage caused by accumulation of the lubricating oil is prevented, the punching block is thrown out of the oil conveying pipe through the centrifugal force of the punching block when the shaft body rotates, the lubricating oil in the oil absorption cotton is extruded out to lubricate the roller pin again, the roller pin is reused, and the service life of the roller pin is prolonged. Meanwhile, when the shaft body stops moving, the oil conveying pipe is blocked by the punching block through the reset acting force of the elastic assembly, and the situation that lubricating oil flows back is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the field of transmission shaft universal joints, in particular to a novel transmission shaft universal joint which prevents oil leakage. Background Art

[0002] The drive shaft is one of the main components of the automobile transmission system and is widely used in four-wheel drive models. The drive shaft is composed of sub-parts such as universal joints, shaft tubes, built-in shock absorbers and balance blocks. Among them, the universal joint is the core component of the drive shaft, which can ensure 360° rotation in any direction and transmit torque. According to the different internal structures, it is divided into constant velocity and unequal velocity universal joints. The constant velocity universal joint includes steel balls, cages, sleeves, sleeve covers, inner star wheels, outer star wheels, washers and other sub-parts.

[0003] The universal joint is an important component in the transmission shaft, and lubricating oil is required during the transmission process. However, the sealing performance of the existing universal joint is poor. During the transmission process, the lubricating oil will leak through the sleeve and the journal, causing a large amount of lubricating oil waste and affecting the overall transmission effect of the universal joint.

[0004] In summary, during the conventional universal joint transmission process, the lubricating oil will leak through the sleeve and the journal, causing a large amount of lubricating oil waste and affecting the overall transmission effect of the universal joint. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a new type of oil leakage-proof transmission shaft universal joint to solve the technical problem that during the transmission process of the universal joint, the lubricating oil leaks through the sleeve and the shaft neck, causing a large amount of lubricating oil waste and affecting the overall transmission effect of the universal joint.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of oil leakage-proof transmission shaft universal joint, comprising a shaft body, an outer wall of the shaft body being symmetrically provided with an array of journals, and the outer wall of the journal being sleeved with a sleeve, an oil groove being provided in the shaft body, and an oil pipe connected to the oil groove being provided in the journal, oil absorbing cotton being provided in the sleeve, a punch block being elastically provided in the oil pipe, and a punch groove for sliding the punch block being provided in the sleeve.

[0007] By adopting the above technical scheme, the excess lubricating oil will be absorbed by the oil-absorbing cotton to prevent its accumulation and leakage. When the shaft rotates, the punch block is thrown out of the oil pipe by its own centrifugal force, and the oil-absorbing cotton is squeezed by the action of the punch groove, so that the lubricating oil in the oil-absorbing cotton is squeezed out to re-lubricate the needle roller, thereby realizing its reuse and reducing the overall lubrication cost. At the same time, when the shaft stops moving, the reset force of the elastic component itself causes the punch block to block the oil pipe, effectively preventing the lubricating oil from flowing back.

[0008] The utility model is further configured that a roller needle is connected between the sleeve and the journal.

[0009] By adopting the above technical solution, the sliding friction between the sleeve and the journal is converted into roller friction under the action of the needle roller, which effectively reduces the friction between the two and ensures the stability of the overall transmission of the device.

[0010] The utility model is further configured such that a certain distance exists between the needle roller and the sleeve, and one end of the oil-absorbing cotton penetrates into the distance.

[0011] By adopting the above technical solution, when the lubricating oil flows through the needle roller, it will flow into the inside of the gap, effectively preventing the lubricating oil from being directly discharged from the sleeve through the needle roller. At the same time, one end of the oil-absorbing cotton will absorb the accumulated lubricating oil, preventing the lubricating oil from being wasted and ensuring that the lubricating oil will not leak within the gap.

[0012] The utility model is further configured that a vertical rod is arranged at the bottom of the punch block, and a sliding block is connected to the other end of the vertical rod, and compression springs are connected to both ends of the sliding block.

[0013] By adopting the above technical solution, the elastic force of the compression spring is smaller than the centrifugal force of the rotation of the shaft. During the rotation of the shaft, the centrifugal force will cause the compression spring to be in a stretched state. At this time, the punch block will rush out of the oil pipe. At the same time, after the shaft stops rotating, the reset force of the compression spring itself will drive the punch block to reset, thereby completing the blocking of the oil pipe.

[0014] The utility model is further configured that an oil filling hole is arranged at the top of the shaft body at the oil groove.

[0015] By adopting the above technical solution, the oil filling hole makes it convenient for the staff to add lubricating oil into the oil tank regularly.

[0016] The utility model is further configured such that the oil-absorbing cotton is detachably disposed in the sleeve.

[0017] By adopting the above technical solution, it is convenient for subsequent staff to replace the oil-absorbing cotton and ensure the overall sealing of the sleeve when working.

[0018] The utility model is further configured that the outer wall of the punch block is connected with a sealing gasket.

[0019] By adopting the above technical solution, the oil pipeline is blocked under the action of the sealing gasket to prevent the lubricating oil from passing through the punch block during the reflux process.

[0020] The utility model is further configured such that the inner diameter of the punching groove is greater than the diameter of the punching block.

[0021] By adopting the above technical solution, the punching groove will not hinder the punching block during its movement, and at the same time further ensure that the lubricating oil in the oil-absorbing cotton flows out through the punching groove.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] 1. The utility model provides oil-absorbing cotton in the sleeve. When the lubricating oil in the oil tank is thrown out to lubricate the needle roller, part of the lubricating oil will flow to the bottom of the sleeve. The excess lubricating oil will be absorbed by the oil-absorbing cotton to prevent the oil from accumulating and leaking.

[0024] 2. The utility model elastically arranges a punch block in the oil pipe. When the shaft body rotates, the punch block is thrown out of the oil pipe by its own centrifugal force, and the oil-absorbing cotton is squeezed under the action of the punch groove, so that the lubricating oil in the oil-absorbing cotton is squeezed out to re-lubricate the needle roller, thereby realizing its reuse and reducing the overall lubrication cost. At the same time, when the shaft body stops moving, the reset force of the elastic component itself causes the punch block to block the oil pipe, effectively preventing the lubricating oil from flowing back, and further ensuring the subsequent overall transmission effect of the universal joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the utility model;

[0026] Figure 2 It is a cross-sectional view of the utility model;

[0027] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0028] Figure 4 For this utility model Figure 2 Enlarged view of B.

[0029] In the figure: 1. shaft body; 2. sleeve; 3. journal; 4. oil delivery pipe; 5. oil groove; 6. oil absorbing cotton; 7. punching groove; 8. punching block; 9. compression spring; 10. needle roller. DETAILED DESCRIPTION

[0030] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0031] The following describes an embodiment of the utility model based on its overall structure.

[0032] Embodiment 1

[0033] A novel transmission shaft universal joint that prevents oil leakage, such as Figure 1-Figure 4 As shown, it includes a shaft body 1, a journal 3, a sleeve 2, a sealing mechanism, an oil suction mechanism and a rotating mechanism. An array of journals 3 are symmetrically arranged on the outer wall of the shaft body 1, and a sleeve 2 is sleeved on the outer wall of the journal 3. The outer wall of the sleeve 2 is clamped on the plug of the transmission shaft. At the same time, an oil groove 5 is arranged in the shaft body 1, and an oil pipeline 4 connected with the oil groove 5 is arranged in the journal 3. An oil filling hole is arranged at the top of the shaft body 1 at the oil groove 5. The oil filling hole is convenient for the staff to regularly add lubricating oil to the oil groove 5. At the same time, a needle roller 10 is connected between the sleeve 2 and the journal 3. Under the action of the needle roller 10, the sliding friction between the sleeve 2 and the journal 3 is converted into roller friction, which effectively reduces the friction between the two and ensures the stability of the overall transmission of the device. At the same time, the lubricating oil will be lubricated at the needle roller 10 during the rotation. , and then discharged to one end. During this process, since the sleeve 2 is provided with oil-absorbing cotton 6, the excess lubricating oil will be absorbed under the action of the oil-absorbing cotton 6 to prevent its accumulation and leakage, and a punch block 8 is elastically provided in the oil delivery pipe 4, and a punch groove 7 for the sliding of the punch block 8 is provided in the sleeve 2. When the shaft body 1 rotates, the punch block 8 is thrown out of the oil delivery pipe 4 through its own centrifugal force, and the oil-absorbing cotton 6 is squeezed under the action of the punch groove 7, so that the lubricating oil in the oil-absorbing cotton 6 is squeezed out to re-lubricate the needle roller 10, so that it is reused and the overall lubrication cost is reduced. When the shaft body 1 stops moving subsequently, the reset force of the elastic component itself causes the punch block 8 to block the oil delivery pipe 4, effectively preventing the lubricating oil from flowing back, further ensuring the subsequent overall transmission effect of the universal joint.

[0034] See also Figure 2 and Figure 3 A vertical rod is provided at the bottom of the punch block 8, and a slider is connected to the other end of the vertical rod. Compression springs 9 are connected to both ends of the slider. The elastic force of the compression spring 9 is smaller than the centrifugal force of the rotation of the shaft body 1. During the rotation of the shaft body 1, the centrifugal force will cause the compression spring 9 to be in a stretched state. At this time, the punch block 8 will rush out of the oil pipeline 4. At the same time, after the shaft body 1 stops rotating, the reset force of the compression spring 9 itself will drive the punch block 8 to reset, thereby completing the blocking of the oil pipeline 4.

[0035] Embodiment 2

[0036] like Figure 4A new type of oil leakage-proof transmission shaft universal joint is shown, and its overall structure is similar to that of the first embodiment, wherein there is a certain distance between the needle roller 10 and the sleeve 2, and one end of the oil-absorbing cotton 6 penetrates into the distance. When the lubricating oil flows through the needle roller 10, the lubricating oil will flow into the inside of the distance, effectively preventing the lubricating oil from being directly discharged from the sleeve 2 through the needle roller 10. At the same time, one end of the oil-absorbing cotton 6 will absorb the accumulated lubricating oil, preventing the lubricating oil from being wasted and ensuring that the lubricating oil will not leak within the distance.

[0037] The working principle of the utility model is as follows: when in use, the outer wall of the sleeve 2 is clamped on the plug of the transmission shaft, and then the lubricating oil is injected into the oil groove 5. In the process of the plug driving the shaft to rotate, the lubricating oil will flow to the needle roller 10 through the oil pipe 4, and then accumulate on the inner wall of the sleeve 2. The lubricating oil is absorbed by the oil-absorbing cotton 6 to prevent the lubricating oil from leaking during long-term transmission. In the process of rotation of the shaft 1, the punch block 8 enters the punch groove 7 under the action of its own centrifugal force, squeezes the oil-absorbing cotton inside, and squeezes the lubricating oil to the needle roller 10 again, so that it can be reused and the overall lubrication cost can be reduced. Then, when the shaft 1 stops moving, the punch block 8 is reset under the action of the compression spring 9, and the oil pipe 4 is re-blocked to prevent the lubricating oil in the sleeve 2 from flowing back.

[0038] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A novel transmission shaft universal joint that prevents oil leakage, comprising a shaft body (1), wherein the outer wall of the shaft body (1) is symmetrically provided with a plurality of journals (3), and the outer wall of the journal (3) is sleeved with a sleeve (2), characterized in that: An oil groove (5) is arranged in the shaft body (1), and an oil delivery pipe (4) connected to the oil groove (5) is arranged in the journal (3), an oil absorbing cotton (6) is arranged in the sleeve (2), a punch block (8) is elastically arranged in the oil delivery pipe (4), and a punch groove (7) for the punch block (8) to slide is arranged in the sleeve (2).

2. The novel oil-leakage-proof transmission shaft universal joint according to claim 1, characterized in that: A rolling needle (10) is connected between the sleeve (2) and the journal (3).

3. The novel oil-leakage-proof transmission shaft universal joint according to claim 2, characterized in that: There is a certain distance between the rolling needle (10) and the sleeve (2), and one end of the oil-absorbing cotton (6) penetrates into the distance.

4. The novel oil-leakage-proof transmission shaft universal joint according to claim 1, characterized in that: A vertical rod is provided at the bottom of the punch block (8), and a sliding block is connected to the other end of the vertical rod, and compression springs (9) are connected to both ends of the sliding block.

5. The novel oil-leakage-proof transmission shaft universal joint according to claim 1, characterized in that: An oil filling hole is provided at the top of the shaft body (1) at the oil groove (5).

6. The novel oil-leakage-proof transmission shaft universal joint according to claim 1, characterized in that: The oil-absorbing cotton (6) is located in the sleeve (2) and is detachably arranged.

7. The novel oil-leakage-proof transmission shaft universal joint according to claim 1, characterized in that: The outer wall of the punch block (8) is connected with a sealing gasket.

8. The novel oil-leakage-proof transmission shaft universal joint according to claim 1, characterized in that: The inner diameter of the punching groove (7) is greater than the diameter of the punching block (8).

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