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CN-224214598-U - Sealing cross shaft universal joint for passenger car

CN224214598UCN 224214598 UCN224214598 UCN 224214598UCN-224214598-U

Abstract

The utility model relates to the technical field of cross shafts and discloses a sealing cross shaft universal joint for a passenger car, which comprises a cross shaft body, a shaft neck and a shaft sleeve, wherein a rolling pin which rotates between the shaft sleeve and the shaft neck is sleeved outside the cross shaft body, two symmetrically arranged protection half shells are sleeved outside the cross shaft body, fixing holes are formed in the opposite angle positions of any one protection half shell, fixing rods matched with the fixing holes are arranged in the other two opposite angle positions of the protection half shells, a penetrating oil filling opening is formed in any one protection half shell, the oil filling opening is used for filling grease into a cavity in the protection half shell, a first oil seal is arranged on the shaft neck, the first oil seal is an external C-shaped oil seal, a second oil seal is arranged at the position of an inner port of the shaft sleeve, the second oil seal is an internal star-shaped oil seal, the first oil seal and the second oil seal are used for preventing impurities from entering and lubricating oil from flowing out, and the problems that existing equipment is easily damaged by impurities in the external environment and lubricating oil is easily leaked are solved.

Inventors

  • Xia Xianjie
  • LI JIANMING
  • CHEN XIA

Assignees

  • 杭州丰轿转向部件有限公司

Dates

Publication Date
20260508
Application Date
20250714

Claims (8)

  1. 1. The utility model provides a sealed cross universal joint for passenger cars, includes cross axle body (100), the fixed connection axle journal (200) all around of cross axle body (100), the outside cover of axle journal (200) is equipped with axle sleeve (300), be provided with rotatable kingpin (310) on the inner wall of axle sleeve (300), kingpin (310) rotate in between the inner wall of axle sleeve (300) and the outside of axle journal (200), its characterized in that, Two symmetrically arranged protection half shells (500) are sleeved outside the cross shaft body (100), fixing holes (510) are formed in diagonal positions of any one protection half shell (500), fixing rods (520) matched with the fixing holes (510) are arranged in other two diagonal positions of the protection half shell (500), a penetrating oil injection port (530) is formed in any one protection half shell (500), and the oil injection port (530) is used for injecting oil into an inner cavity of the protection half shell (500); The novel oil seal is characterized in that a first oil seal (410) is further arranged on the shaft neck (200), the first oil seal (410) is an external C-shaped oil seal, a second oil seal (420) is arranged at the position of an inner port of the shaft sleeve (300), the second oil seal (420) is an internal star-shaped oil seal, and the first oil seal (410) and the second oil seal (420) are used for preventing impurities from entering and lubricating oil from flowing out.
  2. 2. The cross seal universal joint for a passenger car according to claim 1, wherein a groove (320) is formed in an inner port position of the shaft sleeve (300), the second oil seal (420) is arranged in the groove (320), a sealing ring (430) is arranged between the first oil seal (410) and the second oil seal (420), the sealing ring (430) is arranged in the shaft sleeve (300), an outer peripheral surface of the sealing ring (430) is in fit with an inner wall of the shaft sleeve (300), and an inner peripheral surface of the sealing ring (430) is in fit with an outer wall of the shaft journal (200).
  3. 3. The sealed cross joint for a passenger car according to claim 1, wherein an adsorption block (330) integrated with the shaft sleeve (300) is fixedly arranged on the bottom surface of the shaft sleeve (300) at one side far away from the opening, and the adsorption block (330) is made of a magnetic material and is used for adsorbing ferromagnetic abrasive particles in lubricating oil and preventing the abrasive particles from cyclically wearing parts.
  4. 4. The sealed cross joint for a passenger car according to claim 2, wherein an outer diameter lip of the first oil seal (410) is tightly pressed and sealed with a port surface of the shaft sleeve (300), an inner diameter lip of the first oil seal (410) is arranged on an outer wall of the shaft journal (200) and an inner wall of a fracture of the shaft sleeve (300), a surface of the first oil seal (410) close to one side of the cross joint body (100) is tightly pressed and sealed with a step of the cross joint body (100), two outer diameter lips of the second oil seal (420) are tightly pressed and sealed with an inner wall of the groove (320), and an inner diameter lip of the second oil seal (420) is tightly pressed and sealed with an outer wall of the shaft journal (200).
  5. 5. A sealed cross joint for a passenger car according to claim 3, wherein the surface of the adsorption block (330) is provided with an oil lubrication groove (340), and the oil lubrication groove (340) is used for storing more lubricating oil.
  6. 6. The cross seal universal joint for a passenger car according to claim 2, wherein the seal ring (430) is made of an elastic material, has an O-shaped cross section, and forms a plurality of seal lines inside the shaft sleeve (300), thereby further improving the sealing effect.
  7. 7. The sealed cross joint for a passenger car according to claim 2, wherein the inside of the sealing ring (430) is hollow, and an adsorptive material is placed in the sealing ring (430), and ventilation holes are formed in the sealing ring (430).
  8. 8. The sealed cross joint for a passenger car according to claim 1, wherein an annular groove is formed in the first oil seal (410), and a reinforcing rib (411) is placed in the annular groove for reinforcing deformation resistance of the oil seal.

Description

Sealing cross shaft universal joint for passenger car Technical Field The utility model relates to the technical field of cross shafts, in particular to a sealing cross shaft universal joint for a passenger car. Background The universal joint cross shaft is a part for realizing variable-angle power transmission, is used for changing the position of a transmission axis direction, is a joint part of a universal transmission device of an automobile driving system, is combined with the transmission shaft and is called as a universal joint cross shaft transmission device, and the common universal joint cross shaft transmission device generally consists of a cross shaft, an oil seal, a needle roller and a shaft sleeve. The utility model discloses a long-life universal joint cross shaft, which comprises a cross shaft, an oil seal, rolling pins, a shaft sleeve and a lubrication ring, wherein the cross shaft is provided with a plurality of shaft necks, the shaft sleeves are arranged at the shaft necks, the end faces of the shaft necks are contacted with the end faces of the shaft sleeve, the lubrication ring is arranged at the end faces of the shaft sleeve, the rolling pins are uniformly distributed in the shaft sleeve, the oil seal is arranged at one side of the rolling pins, the oil seal comprises a support and a sealing ring, the sealing ring is embedded with the support, the support is embedded into an opening of the shaft sleeve, the friction between the end faces of the shaft sleeve and the end faces of the shaft sleeve is delayed by adding the lubrication ring on the end faces of the shaft sleeve and the rolling pins, so that the service life of the universal joint cross shaft is prolonged, and the cavity formed by a plurality of sealing flaps seals the shaft sleeve, so that the lubricating medium inside the shaft sleeve is prevented from leaking, and is in a state of being fully lubricated, and the rotation of the universal joint cross shaft cannot be influenced by dry friction during operation of the universal joint cross shaft. In the use process of the device, the problems of single sealing structure, insufficient protection, inconvenient maintenance and the like are caused, and the problems of impurity invasion, lubricating oil leakage, part abrasion and the like are easy to occur. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides a sealing cross joint universal joint for a passenger car, which has the advantage of multiple protection and solves the problems that the existing equipment is easily damaged by impurities in the external environment and lubricating oil is easily leaked. (II) technical scheme In order to achieve the aim, the utility model provides the technical scheme that the sealing cross shaft universal joint for the passenger car comprises a cross shaft body, wherein the periphery of the cross shaft body is fixedly connected with a shaft neck, the outer side of the shaft neck is sleeved with a shaft sleeve, the inner wall of the shaft sleeve is provided with rotatable needle rollers, the needle rollers rotate between the inner wall of the shaft sleeve and the outer side of the shaft neck, The cross axle body overcoat is equipped with the protection half shell that two symmetries set up, and the fixed orifices has been seted up to diagonal position on arbitrary protection half shell, and should protect two other diagonal positions of half shell be provided with the dead lever that the fixed orifices cooperation was used, arbitrary set up the oiling mouth that runs through on the protection half shell, the oiling mouth is arranged in to the injection grease in the cavity of protecting half shell, still be provided with first oil blanket on the axle journal, first oil blanket is external C type oil blanket, axle sleeve internal port position is provided with the second oil blanket, the second oil blanket is built-in star-shaped oil blanket, first oil blanket and second oil blanket are used for preventing the entering of impurity and the outflow of lubricating oil. Preferably, the position of the inner port of the shaft sleeve is provided with a groove, the second oil seal is arranged in the groove, a sealing ring is arranged between the first oil seal and the second oil seal, the sealing ring is arranged in the shaft sleeve, the outer peripheral surface of the sealing ring is in fit with the inner wall of the shaft sleeve, and the inner peripheral surface of the sealing ring is in fit with the outer wall of the shaft neck. Preferably, the bottom surface of the shaft sleeve far away from the opening side is fixedly provided with an adsorption block integrated with the shaft sleeve, and the adsorption block is made of magnetic materials and is used for adsorbing ferromagnetic abrasive particles in lubricating oil and preventing the abrasive particles from cyclically wearing parts. Preferably, the outer diameter li