New energy automobile chassis assembly

Abstract

The invention discloses a new energy automobile chassis assembly which comprises a transmission part, the transmission part comprises an eccentric tripod type constant velocity universal joint, the eccentric tripod type constant velocity universal joint is composed of an eccentric three-column groove shell, a transmission shaft, a baffle ring and an eccentric tripod bearing, the transmission shaft is arranged in the eccentric three-column groove shell, and the baffle ring is arranged in the eccentric tripod bearing. And the circulating spraying lubricating mechanism is used for lubricating the eccentric tripod type constant velocity universal joint. The eccentric tripod type constant velocity universal joint can stably, reliably, flexibly and accurately transmit motion and torque, is compact in structure, uniform and reasonable in stress and resistant to impact load, and prolongs the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, in particular to a new energy vehicle chassis component. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and adopt new vehicle power devices), and have advanced technical principles, new technologies, and new structures in terms of comprehensive vehicle power control and drive. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. Compared with traditional fuel vehicles, new energy vehicles have significant differences and advantages in terms of energy use, environmental protection, and technical principles.

[0003] The chassis components of new energy vehicles include ball-and-pin type constant velocity joints, but the ball ring of the tripod bearing in the traditional ball-and-pin type constant velocity joint that transmits motion and torque is a symmetrical structure. Therefore, during long-term use, it has the following shortcomings: the geometric space arrangement is unreasonable, uncoordinated, and mismatched; the stress during work is seriously uneven, it is very easy to be damaged, and the service life is short; it is not conducive to the geometric space arrangement of the tripod bearing itself and the three-column groove shell that matches it, making the entire tripod type constant velocity joint very easy to be damaged and the service life is short. Summary of the invention

[0004] In order to overcome the shortcomings and defects of the tripod bearing in the traditional tripod type constant velocity universal joint, such as unreasonable geometric space arrangement, uneven stress, easy breakage and short service life, the present invention proposes a new energy vehicle chassis assembly.

[0005] In order to solve the above technical problems, the basic technical solution proposed by the present invention is: A new energy vehicle chassis component includes a transmission part, and the transmission part includes an eccentric tripod type constant velocity universal joint. The eccentric tripod type constant velocity universal joint is composed of an eccentric three-column groove shell, a transmission shaft, a retaining ring and an eccentric tripod bearing. The transmission shaft is arranged inside the eccentric three-column groove shell, and also includes: a circulating spray lubrication mechanism for lubricating the eccentric tripod type constant velocity universal joint.

[0006] Preferably, the eccentric three-ball pin bearing consists of a three-pin shaft, three eccentric ball rings, three wire snap rings, and three needle rollers arranged in a circle. Half of each wire snap ring is placed in the annular groove of the three-pin shaft respectively, and the other half locks the eccentric ball rings on the three-pin shaft respectively. The eccentric three-groove housing consists of three wire bundles evenly distributed in a circle, three channels parallel to the axis, and three eccentric channels respectively connected and matched with the eccentric ball rings. The external spline of its handle is connected to the driven shaft. The outer spherical surface of the eccentric ball ring is in the channel of the three-groove housing that is equally divided into three parts along the circumference and whose wire bundle is parallel to the axis. The three-pin shaft is connected to the drive shaft through the external spline of the handle and axially fastened by a snap ring.

[0007] Preferably, the circulating spray lubrication mechanism includes a hollow inner ring arranged near the eccentric three-groove housing and corresponding to its position, and a solid outer ring arranged outside the hollow inner ring. A plurality of nozzles arranged in an annular and equally spaced manner are installed on the outer surface of the hollow inner ring and facing the middle of one side of the eccentric three-groove housing. A plurality of fastening springs arranged in an annular and equally spaced manner are provided between the hollow inner ring and the solid outer ring.

[0008] Preferably, the solid outer ring and the hollow inner ring are coaxial. The hollow inner ring and the drive shaft are rotatably arranged through a bearing. Outer ring fixed feet are arranged on both sides of the bottom of the solid outer ring, and the solid outer ring is connected to the frame of the new energy vehicle chassis body through the outer ring fixed feet. One end of the fastening spring is connected to the hollow inner ring, and the other end of the fastening spring is connected to the solid outer ring.

[0009] Preferably, the circulating spray lubrication mechanism further includes an oil collecting cover arranged outside the eccentric three-groove housing and near the port position of the eccentric three-groove housing, and an oil collecting cylinder arranged inside the new energy vehicle chassis body. The oil collecting cover is annular. A movable rod is arranged in the middle of the oil collecting cylinder. One end of the movable rod is designed in a U-shaped structure, and a piston is fixedly arranged in the middle of the other end of the movable rod.

[0010] Preferably, the inner surface of the oil collecting cover is arranged in clearance fit with the outer surface of the eccentric three-groove housing. Oil cover fixed feet are arranged on both sides of the bottom of the oil collecting cover, and the oil collecting cover is connected to the frame of the new energy vehicle chassis body through the oil cover fixed feet. An oil cylinder fixing frame is arranged on the outer surface of the oil collecting cylinder, and the oil collecting cylinder is connected to the frame of the new energy vehicle chassis body through the oil cylinder fixing frame.

[0011] Preferably, a first liquid one-way valve is installed at the inlet end of the oil collecting cylinder, and a second liquid one-way valve is installed at the outlet end of the oil collecting cylinder. The inlet end of the first liquid one-way valve is provided with an oil suction pipe. The outlet end of the oil suction pipe is connected to the inlet end of the first liquid one-way valve, and the inlet end of the oil suction pipe is connected to the outlet end at the bottom of the oil collecting cover. The outlet end of the second liquid one-way valve is provided with an oil delivery pipe. The inlet end of the oil delivery pipe is connected to the outlet end of the second liquid one-way valve, and the outlet end of the oil delivery pipe is connected to the inlet end of the outer surface of the hollow inner ring. Both the oil suction pipe and the oil delivery pipe are shaped hoses.

[0012] Preferably, the circulating spraying lubrication mechanism further includes a driving disk arranged inside the new energy vehicle chassis body and close to the oil collecting cylinder. The driving disk corresponds to the position of the oil collecting cylinder. A U-shaped fixing frame for supporting the driving disk is arranged in the middle of the upper surface of the driving disk. The U-shaped fixing frame is connected to the frame of the new energy vehicle chassis body. The driving disk and the U-shaped fixing frame are rotatably arranged through a bearing. A push-pull rod is arranged below the driving disk. One end of the push-pull rod is rotatably arranged with the driving disk through a first pin shaft. The other end of the push-pull rod is rotatably arranged with the movable rod through a second pin shaft. The outer end of the driving disk is connected and assembled with the output end of an external driving member through a speed reducer.

[0013] The beneficial effects of the present invention are as follows: The offset three-ball pin constant velocity universal joint provided by the present invention can not only transmit motion and torque smoothly, reliably, flexibly and precisely, but also has a compact structure, uniform and reasonable force, and is resistant to impact loads, thus prolonging the service life. By setting the circulating spraying lubrication mechanism, the present invention realizes the continuous automatic replenishment and circulating lubrication of the lubricating oil, ensures the operation of the offset three-ball pin constant velocity universal joint under efficient, safe and reliable conditions, and improves the service life and performance of the entire new energy vehicle chassis assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the offset three-ball pin constant velocity universal joint of the present invention; Figure 3 is a schematic diagram of the longitudinal front sectional structure of the present invention; Figure 4 is of the present invention Figure 4 lateral sectional side view in; Figure 5 is a schematic diagram of the structure of the circulating spraying lubrication mechanism of the present invention Figure 1 ; Figure 6 is a schematic diagram of the structure of the circulating spraying lubrication mechanism of the present invention Figure 2 。

[0015] Description of the reference numerals: 100, chassis body of new energy vehicle; 200, offset triple ball pin constant velocity universal joint; 201, offset triple groove housing; 202, transmission shaft; 203, retaining ring; 204, offset triple ball pin bearing; 205, needle roller; 206, wire snap ring; 207, offset ball ring; 208, triple pin shaft; 300, circulating spraying lubrication mechanism; 301, solid outer ring; 302, oil collecting cover; 303, oil cover fixing support leg; 304, oil collecting cylinder; 305, U-shaped fixing bracket; 306, driving disc; 307, oil cylinder fixing bracket; 308, outer ring fixing support leg; 309, driving member; 310, speed reducer; 311, push-pull rod; 312, movable rod; 313, piston; 314, first liquid one-way valve; 315, second liquid one-way valve; 316, oil suction pipe; 317, nozzle; 318, hollow inner ring; 319, fastening spring; 320, oil supply pipe; 321, first pin shaft; 322, second pin shaft. Detailed implementation manners

[0016] The following will combine the attached Figure 1 to the attached Figure 6 to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] The present invention provides a technical solution: a chassis component of a new energy vehicle, including a transmission part. Among them, the transmission part includes an eccentric three-ball pin constant velocity universal joint 200, and further includes: a circulating spraying lubrication mechanism 300 for lubricating the eccentric three-ball pin constant velocity universal joint 200. Specifically, the eccentric three-ball pin constant velocity universal joint 200 is composed of an eccentric three-groove housing 201, a transmission shaft 202, a retaining ring 203, and an eccentric three-ball pin bearing 204. The transmission shaft 202 is arranged inside the eccentric three-groove housing 201. The eccentric three-ball pin bearing 204 is composed of a three-pin shaft 208, three eccentric ball rings 207, three wire snap rings 206, and three needle rollers 205 arranged in a circumferential manner. Half of each wire snap ring 206 is respectively placed in the annular groove of the three-pin shaft 208, and the other half locks the eccentric ball ring 207 on the three-pin shaft 208 to prevent the eccentric ball ring 207 from moving out and scattering. The eccentric three-groove housing 201 is composed of three channels parallel to the axis and evenly distributed along the circumference, and three eccentric channels are respectively connected and matched with the eccentric ball rings 207. The external spline of its handle is connected to the driven shaft. The outer spherical surface of the eccentric ball ring 207 is in the channels of the three-groove housing that are equally divided into three parts along the circumference and parallel to the axis, and it rolls and slides. The three-pin shaft 208 is connected to the transmission shaft 202 through the external spline of the handle and axially fastened by the retaining ring 203, so as to realize that the eccentric three-ball pin constant velocity universal joint 200 can still transmit motion and torque smoothly, flexibly, precisely and reliably under the complex working conditions of certain angular displacement and axial displacement of the main and driven shafts at the same time.

[0018] Furthermore, the circulating spraying lubrication mechanism 300 includes a hollow inner ring 318 arranged near the eccentric three-groove housing 201 and corresponding to the position of the eccentric three-groove housing 201, and a solid outer ring 301 arranged outside the hollow inner ring 318. The solid outer ring 301 and the hollow inner ring 318 are coaxial. The hollow inner ring 318 is rotatably arranged with the transmission shaft 202 through a bearing. Outer ring fixing feet 308 are arranged on both sides of the bottom of the solid outer ring 301, and the solid outer ring 301 is connected to the frame of the new energy vehicle chassis body 100 through the outer ring fixing feet 308. A plurality of nozzles 317 arranged in an annular and equally spaced manner are installed on the outer surface of the hollow inner ring 318 and facing the middle of one side of the eccentric three-groove housing 201, for spraying lubricating oil into the eccentric three-groove housing 201 to lubricate the joint. A plurality of fastening springs 319 arranged in an annular and equally spaced manner are arranged between the hollow inner ring 318 and the solid outer ring 301, for positioning the hollow inner ring 318 to prevent the hollow inner ring 318 from rotating. One end of the fastening spring 319 is connected to the hollow inner ring 318, and the other end of the fastening spring 319 is connected to the solid outer ring 301.

[0019] Specifically, the cyclic spraying lubrication mechanism 300 further includes an oil collecting cover 302 disposed outside the eccentric three-column groove housing 201 and near the port position of the eccentric three-column groove housing 201 for recovering lubricating oil, and an oil collecting cylinder 304 disposed inside the new energy vehicle chassis body 100. An oil cylinder fixing bracket 307 is provided on the outer surface of the oil collecting cylinder 304. The oil collecting cylinder 304 is connected to the frame of the new energy vehicle chassis body 100 through the oil cylinder fixing bracket 307. The oil collecting cover 302 is annular, and the inner surface of the oil collecting cover 302 is arranged in clearance fit with the outer surface of the eccentric three-column groove housing 201. Oil cover fixing feet 303 are provided on both sides of the bottom of the oil collecting cover 302. The oil collecting cover 302 is connected to the frame of the new energy vehicle chassis body 100 through the oil cover fixing feet 303. A movable rod 312 is provided in the middle of the oil collecting cylinder 304. One end of the movable rod 312 is designed in a U-shaped structure, and a piston 313 is fixedly provided in the middle of the other end of the movable rod 312. The piston 313 is slidably arranged in the oil collecting cylinder 304. A first liquid one-way valve 314 is installed at the inlet end of the oil collecting cylinder 304, and a second liquid one-way valve 315 is installed at the outlet end of the oil collecting cylinder 304. The first liquid one-way valve 314 only allows external lubricating oil to enter the oil collecting cylinder 304, and the second liquid one-way valve 315 only allows the lubricating oil in the oil collecting cylinder 304 to be discharged. An oil suction pipe 316 is provided at the inlet end of the first liquid one-way valve 314. The outlet end of the oil suction pipe 316 is connected to the inlet end of the first liquid one-way valve 314, and the inlet end of the oil suction pipe 316 is connected to the outlet end of the bottom of the oil collecting cover 302. An oil delivery pipe 320 is provided at the outlet end of the second liquid one-way valve 315. The inlet end of the oil delivery pipe 320 is connected to the outlet end of the second liquid one-way valve 315, and the outlet end of the oil delivery pipe 320 is connected to the inlet end of the outer surface of the hollow inner ring 318. Both the oil suction pipe 316 and the oil delivery pipe 320 are shaped hoses. The cyclic spraying lubrication mechanism 300 further includes a driving disk 306 disposed inside the new energy vehicle chassis body 100 and near the oil collecting cylinder 304. The driving disk 306 corresponds to the position of the oil collecting cylinder 304. A U-shaped fixing bracket 305 for supporting the driving disk 306 is provided in the middle of the upper surface of the driving disk 306. The U-shaped fixing bracket 305 is connected to the frame of the new energy vehicle chassis body 100. The driving disk 306 is rotatably arranged with the U-shaped fixing bracket 305 through a bearing. A push-pull rod 311 is provided below the driving disk 306. One end of the push-pull rod 311 is rotatably arranged with the driving disk 306 through a first pin shaft 321, and the other end of the push-pull rod 311 is rotatably arranged with the movable rod 312 through a second pin shaft 322. The first pin shaft 321 is arranged at a position far from the center of the driving disk 306. The outer end of the driving disk 306 is connected and assembled with the output end of an external driving member 309 through a speed reducer 310.

[0020] According to the above, the eccentric three-ball pin constant velocity universal joint 200 provided by the present invention can not only transmit motion and torque smoothly, reliably, flexibly and precisely, but also has a compact structure, uniform and reasonable force, resistance to impact load, and extended service life. By setting up the circulating spraying lubrication mechanism 300, the present invention realizes the continuous automatic replenishment and circulating lubrication of lubricating oil, ensures the operation of the eccentric three-ball pin constant velocity universal joint 200 under efficient, safe and reliable conditions, and improves the service life and performance of the entire new energy vehicle chassis assembly.

[0021] According to the revelation and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A new energy vehicle chassis assembly, comprising a transmission part, wherein the transmission part comprises an eccentric tripod type constant velocity universal joint (200), characterized in that: The eccentric tripod-type constant velocity universal joint (200) is composed of an eccentric three-column groove housing (201), a transmission shaft (202), a retaining ring (203), and an eccentric tripod bearing (204); the transmission shaft (202) is arranged inside the eccentric three-column groove housing (201), and further comprises a circulating spray lubrication mechanism (300) for lubricating the eccentric tripod-type constant velocity universal joint (200).

2. A new energy vehicle chassis assembly according to claim 1, characterized in that: The eccentric tripod bearing (204) is composed of a tripod shaft (208), three eccentric ball rings (207), three wire retaining rings (206), and three circumferentially arranged needle rollers (205). One half of each wire retaining ring (206) is placed in the annular groove of the tripod shaft (208), and the other half locks the eccentric ball ring (207) on the tripod shaft (208). The eccentric tripod housing (201) is composed of Three grooves and three eccentric grooves that are evenly distributed along the circumference and parallel to the axis are respectively connected and matched with the eccentric ball ring (207), and the external spline of the handle is connected to the driven shaft. The outer spherical surface of the eccentric ball ring (207) is in the groove of the three-column groove shell that is equally divided along the circumference and parallel to the axis. The three pins (208) are connected to the transmission shaft (202) through the external spline of the handle and are axially tightened by the retaining ring (203).

3. A new energy vehicle chassis assembly according to claim 1, characterized in that: The circulating spray lubrication mechanism (300) comprises a hollow inner ring (318) arranged near the position of the eccentric three-column tank shell (201) and corresponding to the position of the eccentric three-column tank shell (201), and a solid outer ring (301) arranged outside the hollow inner ring (318), a plurality of nozzles (317) arranged in a ring shape with equal spacing are installed on the outer surface of the hollow inner ring (318) and in the middle of one side facing the eccentric three-column tank shell (201), and a plurality of tightening springs (319) arranged in a ring shape with equal spacing are installed between the hollow inner ring (318) and the solid outer ring (301).

4. A new energy vehicle chassis assembly according to claim 3, characterized in that: The solid outer ring (301) and the hollow inner ring (318) are coaxial, the hollow inner ring (318) and the transmission shaft (202) are rotatably arranged via a bearing, outer ring fixing legs (308) are arranged on both sides of the bottom of the solid outer ring (301), and the solid outer ring (301) is connected to the frame of the new energy vehicle chassis body (100) via the outer ring fixing legs (308), one end of the fastening spring (319) is connected to the hollow inner ring (318), and the other end of the fastening spring (319) is connected to the solid outer ring (301).

5. A new energy vehicle chassis assembly according to claim 3, characterized in that: The circulating spray lubrication mechanism (300) further comprises an oil collecting hood (302) arranged outside the eccentric three-column tank shell (201) and close to the port position of the eccentric three-column tank shell (201), and an oil collecting cylinder (304) arranged inside the chassis body (100) of the new energy vehicle, wherein the oil collecting hood (302) is annular, and a movable rod (312) is arranged in the middle of the oil collecting cylinder (304), one end of the movable rod (312) is designed as a U-shaped structure, and a piston (313) is fixedly arranged in the middle of the other end of the movable rod (312).

6. A new energy vehicle chassis assembly according to claim 5, characterized in that: The inner surface of the oil collecting hood (302) is arranged to be clearance-matched with the outer surface of the eccentric three-column tank shell (201); oil collecting hood fixing legs (303) are arranged on both sides of the bottom of the oil collecting hood (302); the oil collecting hood (302) is connected to the frame of the new energy vehicle chassis body (100) via the oil collecting hood fixing legs (303); the outer surface of the oil collecting barrel (304) is provided with an oil barrel fixing frame (307); the oil collecting barrel (304) is connected to the frame of the new energy vehicle chassis body (100) via the oil barrel fixing frame (307).

7. A new energy vehicle chassis assembly according to claim 5, characterized in that: The inlet end of the oil collecting barrel (304) is provided with a first liquid one-way valve (314), and the outlet end of the oil collecting barrel (304) is provided with a second liquid one-way valve (315); the inlet end of the first liquid one-way valve (314) is provided with an oil suction pipe (316); the outlet end of the oil suction pipe (316) is connected to the inlet end of the first liquid one-way valve (314), and the inlet end of the oil suction pipe (316) is connected to the outlet end of the bottom of the oil collecting cover (302); the outlet end of the second liquid one-way valve (315) is provided with an oil delivery pipe (320); the inlet end of the oil delivery pipe (320) is connected to the outlet end of the second liquid one-way valve (315), and the outlet end of the oil delivery pipe (320) is connected to the inlet end of the outer surface of the hollow inner ring (318); the oil suction pipe (316) and the oil delivery pipe (320) are both shaped hoses.

8. The new energy vehicle chassis assembly according to claim 5, characterized in that: The circulating spray lubrication mechanism (300) further comprises a drive disc (306) arranged inside the chassis body (100) of the new energy vehicle and close to the position of the oil collecting barrel (304), the drive disc (306) corresponding to the position of the oil collecting barrel (304), a U-shaped fixing frame (305) for supporting the drive disc (306) is arranged in the middle of the upper surface of the drive disc (306), the U-shaped fixing frame (305) is connected to the frame of the chassis body (100) of the new energy vehicle, and the drive disc (306) is provided with a U-shaped fixing frame (305) for supporting the drive disc (306). 06) is rotatably arranged with a U-shaped fixing frame (305) via a bearing, a push-pull rod (311) is arranged below the driving disk (306), one end of the push-pull rod (311) is rotatably arranged with the driving disk (306) via a first pin shaft (321), the other end of the push-pull rod (311) is rotatably arranged with a movable rod (312) via a second pin shaft (322), and the outer end of the driving disk (306) is connected and assembled with the output end of the external driving member (309) via a reducer (310).

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