CN216374105U

CN216374105U - Bulb type watt connecting rod device

Info

Publication number: CN216374105U
Application number: CN202123309573.7U
Authority: CN
Inventors: 胡洪伟; 吕仕凌; 卢波; 林智敏
Original assignee: Xiamen King Long United Automotive Industry Co Ltd
Current assignee: Xiamen King Long United Automotive Industry Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-04-26
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to a ball head type watt connecting rod device which comprises a vertical rocker shaft, a vertical rocker and two transverse connecting rods, wherein two ends of each transverse connecting rod are respectively provided with a ball head assembly, each ball head assembly comprises a spherical pair arranged at the end part of each transverse connecting rod and a ball head pin assembled on the spherical pair, the ball head part of each ball head pin is assembled in the spherical pair, and the pin part of each ball head pin is fixedly connected with the vertical rocker or a vehicle body bracket through a locking mechanism. According to the utility model, both ends of the transverse connecting rod adopt ball head structures, and by utilizing the working principle of a ball head spherical pair, when the vertical rocker arm rotates around the center line of the cylindrical pair of the longitudinal arm and the vehicle body along with the vehicle axle to generate a torsion angle, the torsion angle can be transited by the universal principle of the spherical pair, so that the transverse connecting rod, the vertical rocker arm and the vertical rocker arm shaft are prevented from generating alternating stress, and the performance and the service life of the watt connecting rod device are further ensured.

Description

Bulb type watt connecting rod device

Technical Field

The utility model relates to the technical field of trailing arm type suspensions for vehicles, in particular to a ball head type watt linkage device.

Background

As shown in fig. 1 and 2, the watt linkage is mainly composed of two equal or approximately equal transverse links 12a and a vertical rocker arm 11a, the two transverse links 12a are arranged at different heights, the outer connecting point of the transverse link 12a is mounted on the structure of the vehicle body 5a, the inner connecting point is mounted on the vertical rocker arm 11a, and the vertical rocker arm 11a is hinged and mounted at the center of the vehicle axle 2a through the vertical rocker arm shaft. When the automobile is turned, centrifugal force acts on the wheels, the watt linkage device can balance the centrifugal force on the wheels on two sides and reverse the force to the other side, so that the wheels on two sides can always keep the most suitable contact with the road surface, and the automobile can be more flexible when turning.

However, in the conventional watt linkage device, the outer points of the transverse links 12a are all connected with the vehicle body 5a by adopting a rigid structure, and the inner points are connected with the vertical rocker arms 11a by adopting rubber bushings or rigid structures; also, the length of the transverse link 12a is constant and non-adjustable; the vertical rocker arm 11a and the vertical rocker arm shaft are designed by adopting a dry friction rotating pair or a bearing rotating pair. These designs have the following problems in practical use: 1. when the axle 2a is in the process of jumping up and down, as shown in fig. 2, the axle 2a rotates along with the axis of the cylindrical pair 4a of the trailing arm 3a connected with the vehicle body 5a, the vertical rocker arm 11a fixed in the middle of the axle 2a rotates along with the axle 2a, and the inner point and the outer point of the transverse link 12a generate relative motion, but because the transverse link 12a is fixed, a torsion angle is formed inside the transverse link 12a, the torsion angle is increased sharply along with the increase of the jumping up and down amount of the axle 2a, the torsion angle can cause continuous generation of alternating stress on the transverse link 12a, the vertical rocker arm 11a and the vertical rocker shaft, and the alternating stress can be eliminated only by deformation to overcome the alternating stress, which seriously affects the service life of components; 2. because the length of the transverse connecting rod 12a is fixed, certain errors must exist in the manufacturing and assembling processes of the vertical rocker arm 11a on the axle 2a, the vertical rocker arm shaft and two outer side points of the transverse connecting rod 12a on the vehicle body 5a, and then assembling stress is inevitably generated, so that the performance of the watt connecting rod device is influenced; 3. the vertical rocker arm 11a and the vertical rocker arm shaft are designed by a dry friction rotating pair or a bearing rotating pair, the dry friction rotating pair can cause mechanical noise and reduce the service life, and other structures such as the bearing rotating pair bring high production cost and maintenance cost.

Disclosure of Invention

The utility model aims to provide a ball head type watt connecting rod device to solve the technical problems.

The utility model adopts the following technical scheme:

a ball head type watt connecting rod device comprises a vertical rocker shaft, a vertical rocker arm and two transverse connecting rods, wherein the vertical rocker arm is rotatably sleeved on the vertical rocker shaft, ball head assemblies are respectively arranged at two ends of the transverse connecting rods, each ball head assembly comprises a spherical pair arranged at the end part of each transverse connecting rod and a ball head pin assembled on the spherical pair, the ball head part of each ball head pin is assembled in the spherical pair, and the pin part of each ball head pin is fixedly connected with the vertical rocker arm or a vehicle body support through a locking mechanism.

Further, the transverse connecting rod is a transverse connecting rod with adjustable length and comprises an adjusting rod, the two ends of the adjusting rod are respectively in threaded connection with an outer side point connecting rod and an inner side point connecting rod, the ball head assemblies are respectively arranged on the outer side point connecting rod and the inner side point connecting rod, the ball head assembly of the outer side point connecting rod is fixedly connected with the vehicle body support, and the ball head assembly of the inner side point connecting rod is fixedly connected with the vertical rocker arm.

Furthermore, pin holes matched with the ball pin parts are respectively formed in the two ends of the vertical rocker arm, a shaft sleeve matched with the vertical rocker arm shaft is arranged in the middle of the vertical rocker arm, and the shaft sleeve is sleeved in the vertical rocker arm shaft and then locked by a locking assembly.

Furthermore, an oil storage cabin for storing lubricating grease is arranged on the inner side wall of the middle of the shaft sleeve.

Furthermore, a gap is reserved between the inner side wall of the shaft sleeve and the vertical rocker shaft.

Further, a gap is reserved between the shaft sleeve and the locking assembly.

Furthermore, a supply nozzle for supplying lubricating grease to the oil storage cabin is arranged on the shaft sleeve.

Furthermore, the locking assembly consists of a flat washer, a hexagonal flange face nut and a hexagonal locking nut, and the end part of the vertical rocker arm shaft sequentially penetrates through the shaft sleeve, the flat washer, the hexagonal flange face nut and the hexagonal locking nut.

Further, the locking mechanism consists of a cotter pin and a ball head locking nut.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

1. according to the utility model, both ends of the transverse connecting rod adopt ball head structures, and by utilizing the working principle of a ball head spherical pair, when the vertical rocker arm rotates around the center line of a cylindrical auxiliary shaft connected with the vehicle body along with the vehicle axle to generate a torsion angle, the vertical rocker arm can be transited by the universal principle of the spherical pair, so that alternating stress generated by the transverse connecting rod, the vertical rocker arm and the vertical rocker arm shaft is avoided.

2. The length of the transverse connecting rod can be adjusted by the adjusting rod in a fine adjustment mode, so that the two transverse connecting rods can contain manufacturing errors and assembling errors to the maximum extent under the condition that the two transverse connecting rods are approximately equal, and the performance of the watt connecting rod device is guaranteed.

3. The utility model lubricates the cylinder pair formed by the vertical rocker arm and the vertical rocker arm shaft through the oil storage cabin, and is additionally provided with the supply nozzle to facilitate the subsequent supplement of lubricating grease.

Drawings

FIG. 1 is a schematic front view of a prior art Watt linkage;

FIG. 2 is a left side view of the prior art Watt linkage structure principle;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic view of a transverse link structure according to the present invention;

FIG. 5 is a right side view of the vertical rocker arm of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a front view of the vertical rocker arm and vertical rocker shaft of the present invention;

fig. 8 is a sectional view taken in the direction B-B in fig. 7.

Wherein the reference numbers in the figures are: the vertical rocker arm comprises a vertical rocker arm shaft 1, a vertical rocker arm 2, a pin hole 21, a shaft sleeve 22, an oil storage cabin 23, a supply nozzle 24, a flat washer 25, a hexagonal flange nut 26, a hexagonal locking nut 27, a transverse connecting rod 3, an adjusting rod 31, an outer point connecting rod 32, an inner point connecting rod 33, a hexagonal nut 34, a ball head assembly 4, a spherical pair 41, a ball head pin 42, a cotter pin 43, a ball head locking nut 44, an axle bracket 50 and a vehicle body bracket 60.

Detailed Description

The following describes specific embodiments of the present invention with reference to the drawings.

Referring to fig. 3, a ball head watt linkage comprises a vertical rocker shaft 1, a vertical rocker arm 2 rotatably sleeved on the vertical rocker shaft 1, and two transverse links 3.

Referring to fig. 3 and 4, a ball head assembly 4 is respectively disposed at both ends of the transverse link 3, and the ball head assembly 4 includes a spherical pair 41 disposed at an end of the transverse link 3 and a ball head pin 42 fitted to the spherical pair 41. The ball head of the ball stud 42 is assembled in the spherical pair 41, and the stud portion of the ball stud 42 is fixedly connected with the vertical rocker arm 2 or the vehicle body bracket 60 through a locking mechanism. The locking mechanism consists of a cotter pin 43 and a ball head locking nut 44, a pin part of the ball head pin 42 penetrates through the vertical rocker arm 2 or the vehicle body bracket 60 and then is locked by the ball head locking nut 44, and the cotter pin 43 penetrates through the pin part to prop against the ball head locking nut 44. According to the utility model, both ends of the transverse connecting rod 3 adopt ball head structures, and by utilizing the working principle of the ball head spherical pair 41, when the vertical rocker arm 2 positioned on the axle rotates around the center line of the cylindrical auxiliary shaft connected with the vehicle body along with the axle to generate a torsion angle, the torsion angle can be transited by the universal principle of the spherical pair 41, so that the transverse connecting rod 3, the vertical rocker arm 2 and the vertical rocker arm shaft 1 are prevented from generating alternating stress.

Referring to fig. 3 and 4, in the present embodiment, the transverse link 3 is preferably a length-adjustable transverse link 3, and includes an adjusting rod 31, and an outer point link 32 and an inner point link 33 are respectively screwed to both ends of the adjusting rod 31. The two ends of the adjusting rod 31 are provided with external threads, the outer side point connecting rod 32 and the inner side point connecting rod 33 are respectively sleeved at the two ends of the adjusting rod 31, the outer side point connecting rod 32 and the inner side point connecting rod 33 are further fixedly provided with hexagon nuts 34 matched with the external threads, and the outer side point connecting rod 32 and the inner side point connecting rod 33 are locked at the two ends of the adjusting rod 31 through the hexagon nuts 34. The ball head assemblies 4 are respectively arranged on the outer side point connecting rod 32 and the inner side point connecting rod 33, the ball head assemblies 4 of the outer side point connecting rod 32 are fixedly connected with the vehicle body bracket 60, and the ball head assemblies 4 of the inner side point connecting rod 33 are fixedly connected with the vertical rocker arm 2. The length of the transverse connecting rods 3 can be adjusted by the adjusting rods 31 in a fine adjustment mode, so that the two transverse connecting rods 3 can contain manufacturing errors and assembling errors to the maximum extent under the condition of approximate equality, and the performance of the watt connecting rod device is guaranteed.

Referring to fig. 5 to 8, the vertical rocker shaft 1 is fixedly mounted on the axle bracket 50, and the vertical rocker arm 2 is rotatably fitted over the vertical rocker shaft 1. The two ends of the vertical rocker arm 2 are respectively provided with a pin hole 21 matched with the pin part of the ball stud 42, the middle part of the vertical rocker arm 2 is provided with a shaft sleeve 22 matched with the vertical rocker arm shaft 1, the shaft sleeve 22 is locked by a locking assembly after being sleeved into the rocker arm shaft, the locking assembly consists of a flat washer 25, a hexagonal flange face nut 26 and a hexagonal locking nut 27, and the end part of the vertical rocker arm shaft 1 sequentially penetrates through the shaft sleeve 22, the flat washer 25, the hexagonal flange face nut 26 and the hexagonal locking nut 27. The flat washer 25 and the hexagonal flange nut 26 are used for ensuring that the vertical rocker arm 2 is stressed uniformly and locked in the axial direction, and the hexagonal locking nut 27 is used for preventing the hexagonal flange nut 26 from loosening due to stress.

Referring to fig. 5 to 8, an oil storage chamber 23 for storing grease is provided on the inner side wall of the middle portion of the boss 22 of the vertical rocker arm 2, and a supply nozzle 24 for supplying grease to the oil storage chamber 23 is provided on the outer side wall of the boss 22. A certain gap is reserved between the inner side wall of the shaft sleeve 22 and the vertical rocker arm shaft 1, a certain gap is reserved between the shaft sleeve 22 and the locking assembly, and the gap is used for ensuring that the vertical rocker arm 2 rotates freely and is fully lubricated. The utility model lubricates the cylinder pair formed by the vertical rocker arm 2 and the vertical rocker arm shaft 1 through the oil storage cabin 23, and adds the supply nozzle 24 to facilitate the subsequent supplement of lubricating grease, the design can well eliminate the mechanical noise, improve the service life and reduce the maintenance cost, and meanwhile, the production cost can be reduced compared with the use of a bearing pair or other complex mechanisms.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims

1. The utility model provides a ball hair style watt connecting rod device, includes a perpendicular rocking arm axle, rotationally the perpendicular rocking arm and two transverse connection rods of cover on locating perpendicular rocking arm axle, its characterized in that: the ball head assembly is arranged at each of two ends of the transverse connecting rod and comprises a spherical pair arranged at the end part of the transverse connecting rod and a ball head pin assembled on the spherical pair, the ball head part of the ball head pin is assembled in the spherical pair, and the pin part of the ball head pin is fixedly connected with the vertical rocker arm or the vehicle body bracket through a locking mechanism.

2. The ball-headed watt linkage arrangement of claim 1 wherein: the transverse connecting rod is a transverse connecting rod with adjustable length and comprises an adjusting rod, the two ends of the adjusting rod are respectively in threaded connection with an outer side point connecting rod and an inner side point connecting rod, the ball head assembly is respectively arranged on the outer side point connecting rod and the inner side point connecting rod, the ball head assembly of the outer side point connecting rod is fixedly connected with the vehicle body support, and the ball head assembly of the inner side point connecting rod is fixedly connected with the vertical rocker arm.

3. The ball-headed watt linkage arrangement of claim 1 wherein: the two ends of the vertical rocker arm are respectively provided with a pin hole matched with the ball pin part, the middle part of the vertical rocker arm is provided with a shaft sleeve matched with the vertical rocker arm shaft, and the shaft sleeve is sleeved in the vertical rocker arm shaft and then locked by a locking component.

4. A ball-headed watt linkage arrangement as claimed in claim 3 wherein: and an oil storage cabin for storing lubricating grease is arranged on the inner side wall of the middle part of the shaft sleeve.

5. The ball-headed watt linkage arrangement of claim 4 wherein: and a gap is reserved between the inner side wall of the shaft sleeve and the vertical rocker shaft.

6. The ball-headed watt linkage arrangement of claim 4 wherein: and a gap is reserved between the shaft sleeve and the locking assembly.

7. The ball-headed watt linkage arrangement of claim 4 wherein: and the shaft sleeve is provided with a supply nozzle for supplying lubricating grease to the oil storage cabin.

8. A ball-headed watt linkage arrangement as claimed in claim 3 wherein: the locking assembly consists of a flat washer, a hexagonal flange face nut and a hexagonal locking nut, and the end part of the vertical rocker arm shaft sequentially penetrates through the shaft sleeve, the flat washer, the hexagonal flange face nut and the hexagonal locking nut.

9. The ball-headed watt linkage arrangement of claim 1 wherein: the locking mechanism consists of a cotter pin and a ball head locking nut.