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CN-224229120-U - Tripod constant velocity universal joint

CN224229120UCN 224229120 UCN224229120 UCN 224229120UCN-224229120-U

Abstract

The utility model relates to the technical field of constant velocity universal joints, and discloses a tripod constant velocity universal joint which comprises a tripod universal joint and a lantern universal joint, wherein an intermediate shaft is connected between the tripod universal joint and the lantern universal joint, a protective shell is sleeved outside the tripod universal joint, a lubrication mechanism is fixedly arranged at the upper end of the protective shell, a dust cover is fixedly connected to one side, close to the intermediate shaft, of the protective shell, a heat dissipation mechanism is detachably arranged at one side of the dust cover, the lubrication mechanism comprises an oil storage tank fixedly arranged at the upper end of the protective shell, an air inlet is formed in the middle of the upper end of the oil storage tank, a pull rod is movably arranged at the upper end of the oil storage tank and positioned in the air inlet, the lower end of the pull rod penetrates through the air inlet and is fixedly connected with a sealing plate, and a spring is sleeved on the outer wall of the pull rod. According to the utility model, the device can radiate heat in the using process, so that the problem of cracking of the dust cover is effectively prevented, and the service life of the device is prolonged.

Inventors

  • CHEN XIAOSHENG
  • GUO HONGTAO
  • TAO JIANQIU

Assignees

  • 浙江得川汽车部件股份有限公司

Dates

Publication Date
20260512
Application Date
20250715

Claims (7)

  1. 1. The tripod constant velocity universal joint comprises a tripod universal joint (1) and a lantern type universal joint (2) and is characterized in that a middle shaft (3) is connected between the tripod universal joint (1) and the lantern type universal joint (2), a protective shell (4) is sleeved outside the tripod universal joint (1), a lubricating mechanism (5) is fixedly arranged at the upper end of the protective shell (4), a dust cover (6) is fixedly connected to one side, close to the middle shaft (3), of the protective shell (4), and a heat dissipation mechanism (7) is detachably arranged on one side of the dust cover (6); The lubricating mechanism (5) comprises an oil storage tank (51) fixedly arranged at the upper end of the protective shell (4), an air inlet hole (52) is formed in the middle of the upper end of the oil storage tank (51), a pull rod (53) is movably arranged at the upper end of the oil storage tank (51) and located inside the air inlet hole (52), the lower end of the pull rod (53) penetrates through the air inlet hole (52) and is fixedly connected with a sealing plate (54), and a spring (55) is sleeved on the outer wall of the pull rod (53).
  2. 2. The tripod constant velocity joint according to claim 1, wherein the heat dissipation mechanism (7) comprises a fixing ring (71) and a collar (72), the fixing ring (71) is fixedly arranged on one side of the dust cover (6), the collar (72) is sleeved on the intermediate shaft (3), a mounting ring (74) is detachably arranged in the fixing ring (71), and an air-permeable net (76) is arranged between the mounting ring (74) and the collar (72).
  3. 3. A tripod constant velocity joint according to claim 2, wherein the inner wall of the stationary ring (71) is provided with female threads (73), the outer wall of the mounting ring (74) is provided with male threads (75), and the mounting ring (74) is connected inside the stationary ring (71) by means of the male threads (75).
  4. 4. A tripod constant velocity joint according to claim 1, wherein the upper end of the drawbar (53) is fixedly connected with a handle (56).
  5. 5. The tripod constant velocity joint according to claim 1, wherein the lubrication mechanism (5) further comprises a plurality of oil outlets (58), the plurality of oil outlets (58) are respectively equidistantly arranged at the lower ends of two sides of the oil storage tank (51), the outer ends of the plurality of oil outlets (58) are fixedly connected with oil guide pipes (59), and the lower ends of the plurality of oil guide pipes (59) penetrate through the oil storage tank (51) and extend into the oil storage tank.
  6. 6. A tripod constant velocity joint according to claim 1, wherein the oil reservoir (51) is fixedly connected to an oil filler pipe (57) at one side of the upper end thereof.
  7. 7. A tripod constant velocity joint according to claim 1, wherein the upper end surface of the seal plate (54) is formed to conform to the arc of the upper end of the inner wall of the oil reservoir (51).

Description

Tripod constant velocity universal joint Technical Field The utility model relates to the technical field of constant velocity universal joints, in particular to a tripod constant velocity universal joint. Background Vehicles have the necessary vibration and noise regulations that require improvements in the GAF and NVH performance of the vehicle to meet. A drive shaft assembly that transmits output power of a transmission of a vehicle to drive wheels is one of members that induce vibration and noise, and it is necessary to regulate the noise and vibration of the drive shaft within desired ranges, and the drive shaft assembly is composed of a drive shaft and constant velocity universal joints provided on both sides thereof, and in this case, the constant velocity universal joint disposed on the transmission side is referred to as an inner constant velocity universal joint, and the constant velocity universal joint disposed on the drive wheel side is referred to as an outer constant velocity universal joint, and as the inner constant velocity universal joint, a tripod type constant velocity universal joint capable of axial displacement is mainly used. The existing three-ball pin type constant velocity universal joint is characterized in that a dust cover is used for connecting a universal joint shell and a middle shaft, the universal joint is sealed and dustproof, the dust cover is made of rubber, and the dust cover is broken due to heat generated in the use process of the universal joint, so that the service life of the dust cover is shortened. Accordingly, a tripod constant velocity joint is provided by those skilled in the art to solve the problems set forth in the background art described above. Disclosure of utility model The utility model aims to solve the defects in the prior art and provide a tripod constant velocity universal joint which can radiate heat in the using process, effectively prevent the dust cover from cracking and prolong the service life of the tripod constant velocity universal joint. To achieve the above object, the present utility model provides a tripod constant velocity joint comprising The three-ball pin type constant velocity universal joint comprises a three-ball type universal joint and a lantern type universal joint, wherein an intermediate shaft is connected between the three-ball type universal joint and the lantern type universal joint, a protective shell is sleeved outside the three-ball type universal joint, a lubricating mechanism is fixedly arranged at the upper end of the protective shell, a dust cover is fixedly connected to one side, close to the intermediate shaft, of the protective shell, and a heat dissipation mechanism is detachably arranged on one side of the dust cover; The lubricating mechanism comprises an oil storage tank fixedly arranged at the upper end of the protective shell, an air inlet hole is formed in the middle of the upper end of the oil storage tank, a pull rod is movably arranged at the upper end of the oil storage tank and positioned in the air inlet hole, the lower end of the pull rod penetrates through the air inlet hole and is fixedly connected with a sealing plate, and a spring is sleeved on the outer wall of the pull rod. Further, the heat dissipation mechanism comprises a fixed ring and a lantern ring, the fixed ring is fixedly arranged on one side of the dust cover, the lantern ring is sleeved on the intermediate shaft, a mounting ring is detachably arranged in the fixed ring, and a ventilation net is arranged between the mounting ring and the lantern ring; Through above-mentioned technical scheme, can dispel the heat at the in-process that the universal joint used through heat dissipation mechanism, the effectual problem that prevents the dust cover and break exists, improves its life. Further, the inner wall of the fixed ring is provided with an internal thread, the outer wall of the mounting ring is provided with an external thread, and the mounting ring is connected inside the fixed ring through the external thread; Through above-mentioned technical scheme, make the collar detachable to change ventilative net. Further, the upper end of the pull rod is fixedly connected with a handle; through the technical scheme, the pull rod moves downwards by pressing the handle. Further, the lubricating mechanism further comprises a plurality of oil outlets which are respectively arranged at the lower ends of two sides of the oil storage tank at equal intervals, the outer ends of the plurality of oil outlets are fixedly connected with oil guide pipes, and the lower ends of the plurality of oil guide pipes penetrate through the oil storage tank and extend into the oil storage tank; Through the technical scheme, lubricating oil flows into the protective shell through the oil outlet and the oil guide pipe, so that the universal joint is lubricated. Further, one side of the upper end of the oil storage tank is fixedly connected with an oil filling p