Buffering and damping mechanism for rear frame of tricycle

Abstract

The utility model discloses a rear frame buffering and damping mechanism of a tricycle, which is characterized in that the front end of a rear frame and a rear axle tube are respectively connected with the front end and the rear end of a connecting beam, a sleeve is mounted at the front end of the connecting beam, a liner tube is mounted in the sleeve, a rubber sleeve is mounted in the liner tube, and a hanger shaft in the rubber sleeve is in suspension connection with the front end of the connecting beam; two sleeves are installed at the rear end of the connecting beam in a spaced mode, a lining pipe and a rubber sleeve are arranged in each sleeve, and hanging shafts in the two rubber sleeves are connected with the front side and the rear side of the rear axle pipe in a hanging mode respectively. The three rubber sleeves have a certain buffering effect in the up-down direction and the left-right direction, when the wheels run on a bumpy road surface, vibration at the positions of the wheels can be buffered and absorbed by the rubber sleeves, vibration transmitted to the rear frame in the up-down direction during running is reduced, the inclination amount of the rear frame in the left-right direction is also reduced, and the service life of the rear frame is prolonged. Therefore, drivers and passengers are more comfortable and safer.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle frame shock absorption, in particular to a buffer shock absorption mechanism for a rear frame of a tricycle. Background Art

[0002] The tricycle has the characteristics of stable running and heavy load. After adding the battery and motor external drive system, it is especially suitable for the elderly to ride or transport items. The above-mentioned motor is generally installed at the rear of the vehicle and drives the wheels on both sides. As shown in the figure, the common structure is: including a rear frame 5, a motor 23, a gearbox 14, a rear axle tube 3 and a brake component 2. Two horizontal rear axle tubes are arranged at the bottom of the rear frame. The inner ends of the two rear axle tubes are connected to the two sides of the gearbox. The outer ends of the rear axle tubes are installed with brake components and wheels. The brake component can be a drum brake pot 2 or a plate brake disc. The wheel is installed on the column 1. Since the rear frame, electric motor and gearbox are relatively heavy, if a harder shock absorber is used between the rear frame and the rear axle tube, the bumps on the road will be directly transmitted to the driver or passenger sitting on top of the rear frame, resulting in a decrease in comfort. Therefore, manufacturers generally use a spring shock absorber 12 structure between the rear frame and the rear axle tube. As shown in the figure, a bracket 24 is set at the bottom of each rear axle tube. The front end of the bracket is connected to the lower end of the spring shock absorber, and the front side 13 of the rear frame is connected to the upper end of the spring shock absorber at the position opposite to the bracket. Both places are hinged. In actual use, it is found that the spring shock absorber has a good buffering effect on vibrations in the up and down directions, but the buffering ability in the left and right directions is weak, so it is necessary to further improve the structure and provide a structure that can reduce the tilt of the rear frame in the left and right directions to provide a more comfortable driving and riding experience. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a buffer shock absorbing mechanism for the rear frame of a tricycle.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] A buffer shock absorbing mechanism for a rear frame of a tricycle comprises a rear frame, both sides of the rear frame are connected to a rear axle tube arranged below the rear frame through a spring shock absorber, and the feature is that each rear axle tube and the front end of the rear frame in the opposite position are connected to the front end and the rear end of a connecting beam respectively;

[0006] A rubber shock absorbing component is arranged at any one of the positions between the rear end of the connecting beam and the rear axle tube and the front end of the connecting beam and the front end of the rear frame, or both positions are arranged with the rubber shock absorbing component.

[0007] Further: a sleeve is installed at the front end of the connecting beam, and the sleeve is suspended and connected to the front end of the same side of the rear frame, and the rubber shock absorbing component is arranged at the suspension connection.

[0008] Further: a sleeve is installed at the rear end of the connecting beam near the front side of the rear axle tube, the sleeve is suspended and connected to the front side of the rear axle tube, and the rubber shock absorbing component is arranged at the suspension connection.

[0009] Further: a sleeve is installed at the rear end of the connecting beam close to the rear side of the rear axle tube, the sleeve is suspended and connected to the rear side of the rear axle tube, and the rubber shock absorbing component is arranged at the suspension connection.

[0010] Furthermore: a rubber shock-absorbing component is embedded in the sleeve, and two ends of the suspension shaft arranged in the rubber shock-absorbing component are connected to the front end of the rear frame to form a suspension connection.

[0011] Furthermore: a liner is embedded between the sleeve and the rubber shock-absorbing component.

[0012] Further: the rubber shock-absorbing component is a rubber sleeve with a through hole in the center, and the through hole is used to pass the suspension shaft.

[0013] Further: a hinge seat is installed on the upper end surface of the rear axle tube on one side and the rear frame surface opposite thereto respectively, and the hinge shafts arranged on the two hinge shaft seats are respectively connected to one end portion of a pull rod.

[0014] The technical effects achieved by the utility model are:

[0015] In the utility model, the front end of the rear frame and the rear axle tube are respectively connected to the front end and the rear end of a connecting beam, a sleeve is installed at the front end of the connecting beam, a liner is installed in the sleeve, a rubber sleeve is installed in the liner, a suspension shaft in the rubber sleeve is suspended and connected with the front end of the connecting beam, and two sleeves are installed at intervals at the rear end of the connecting beam, and similarly, a liner and a rubber sleeve are arranged in each sleeve, and the suspension shafts in the two rubber sleeves are suspended and connected with the front side and the rear side of the rear axle tube respectively. The three rubber sleeves have a certain buffering effect in the up-down direction and the left-right direction. When the wheels are running on a bumpy road, the vibration at the wheels will be buffered and absorbed by the rubber sleeves, reducing the up-down vibration transmitted to the rear frame during driving, and also reducing the tilt of the rear frame in the left-right direction, thereby making the driver and passengers more comfortable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 yes Figure 1 Right side view;

[0018] Figure 3 yes Figure 2 The view from the top after rotating 90 degrees clockwise;

[0019] Figure 4It is a schematic diagram of the connecting beam, casing and rubber sleeve. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0021] A buffer shock absorbing mechanism for a rear frame of a tricycle includes a rear frame 5, both sides of which are connected to a rear axle tube 3 arranged below the rear frame through a spring shock absorber 12. As shown in the figure, each rear axle tube and the corresponding front end 11 of the rear frame are respectively connected to a connecting beam 16. A rubber shock absorbing component 27 is arranged at any one of the positions between the rear end of the connecting beam and the rear axle tube, the front end of the connecting beam and the front end of the rear frame, or both positions.

[0022] A front sleeve 19 is installed in the depression 20 at the front end of the connecting beam. The front sleeve is suspended and connected to the bottom surface of the front end 11 on the same side of the rear frame, and a rubber shock-absorbing component is arranged at the suspension connection. A middle sleeve 21 is installed at the rear end of the connecting beam near the front side of the rear axle tube. The middle sleeve is suspended and connected to the front side of the rear axle tube, and the rubber shock-absorbing component is arranged at the suspension connection. A rear sleeve 4 is installed at the rear end of the connecting beam near the rear side of the rear axle tube. The rear sleeve is suspended and connected to the rear side of the rear axle tube, and a rubber shock-absorbing component is arranged at the suspension connection.

[0023] The structure of the above suspension connection is as follows Figure 1-4 As shown, a rubber shock-absorbing component is embedded in the internal space 29 of the front sleeve, and an axle tube 26 is arranged in the coaxial through hole 30 of the rubber shock-absorbing component. A frame-type suspension arm 17 is installed on the bottom surface of the front end of the rear frame by welding or screwing. The two ends of the front sleeve are embedded in the space of the lower ends of the suspension arms on both sides of the frame-type suspension arms with clearance fit. The screw rod installed at the lower end of the suspension arm passes through the two lower ends of the suspension arms and the axle tube and is fixed by a nut. The screw rod is equivalent to the suspension shaft, and the front end of the rear frame suspends the front sleeve of the connecting beam through the screw rod and the axle tube. The cylindrical rubber shock-absorbing component embedded between the axle tube and the front sleeve forms a buffer structure.

[0024] The middle sleeve and the rear sleeve are installed at intervals at the rear end of the connecting beam. The two sleeves are also embedded with cylindrical rubber shock-absorbing components. The axle tube is embedded in the coaxial through hole of each rubber shock-absorbing component. A recess 20 at the upper end of a hanger 22 is embedded in the position where the rear axle tube and the rear end of the connecting beam are aligned. The recess and the rear axle tube can be fixed to each other by welding. The hanger is provided with two mutually spaced hanging plates 31 along the axial direction of the rear axle tube. The front and rear ends of the hanger are respectively penetrated by a screw 18. The screw near the front side of the rear axle tube passes through the axle tube inside the middle sleeve, and the screw near the rear side of the rear axle tube passes through the axle tube inside the rear sleeve. In this way, the two screws are equivalent to suspension shafts, forming a suspension connection between the middle sleeve and the rear sleeve and the rear axle tube.

[0025] A liner 28 is embedded between the front sleeve, the middle sleeve and the rear sleeve and the rubber damping component therein. The rubber damping component is a rubber sleeve with a cylindrical shape and a coaxial through hole in the center. The through hole is used to pass the shaft tube, and the shaft tube passes through the suspension shaft. The lower ends of both sides of the connecting beam are provided with bent edges 25 for strengthening the strength.

[0026] A hinge seat 15 is installed on the upper end surface of the rear axle tube 3 on one side and the surface of the rear frame opposite thereto, and a hinge shaft 9 is respectively arranged in the openings 8 on both sides of the two hinge seats, and the two hinge shafts are respectively connected to one end of a tie rod 10. The tie rod is equivalent to forming a pulling effect between the rear frame and the rear axle tube to maintain the stability of the overall structure.

[0027] A vertical beam 7 extending vertically downward is arranged at the front side of the rear frame 5, and a diagonal beam 6 tilted forward is arranged at the rear side of the vertical beam. The square tube extending forward at the lower end of the diagonal beam is connected to the vertical beam and the front end forms the front end 11 of the rear frame. Two horizontal rear axle tubes 3 are arranged at the bottom of the rear frame. The inner ends of the two rear axle tubes are connected to the two sides of the gearbox 14, and the outer ends of the rear axle tubes are installed with brake components and wheels. The brake components can be drum brake pots 2 or plate brake discs, and the wheels are installed on the pillars 1. A bracket 24 is arranged at the bottom of each rear axle tube, and the front end of the bracket is connected to the lower end of the spring shock absorber 12, and the position where the front side edge 13 of the rear frame is aligned with the bracket is connected to the upper end of the spring shock absorber, and both places are hinged.

[0028] In the utility model, the front end of the rear frame and the rear axle tube are respectively connected to the front end and the rear end of a connecting beam, a sleeve is installed at the front end of the connecting beam, a liner is installed in the sleeve, a rubber sleeve is installed in the liner, a suspension shaft in the rubber sleeve is suspended and connected with the front end of the connecting beam, and two sleeves are installed at intervals at the rear end of the connecting beam, and similarly, a liner and a rubber sleeve are arranged in each sleeve, and the suspension shafts in the two rubber sleeves are suspended and connected with the front side and the rear side of the rear axle tube respectively. The three rubber sleeves have a certain buffering effect in the up-down direction and the left-right direction. When the wheels are running on a bumpy road, the vibration at the wheels will be buffered and absorbed by the rubber sleeves, reducing the up-down vibration transmitted to the rear frame during driving, and also reducing the tilt of the rear frame in the left-right direction, thereby making the driver and passengers more comfortable and safe.

Claims

1. A buffer shock absorbing mechanism for a rear frame of a tricycle, wherein both sides of the rear frame are connected to a rear axle tube arranged below the rear frame through a spring shock absorber, and the characteristics are: Each rear axle tube and the front end of the opposed rear frame are connected to the front end and the rear end of a connecting beam respectively; A rubber shock absorbing component is arranged at any one of the positions between the rear end of the connecting beam and the rear axle tube and the front end of the connecting beam and the front end of the rear frame, or both positions are arranged with the rubber shock absorbing component.

2. The buffer shock absorbing mechanism for the rear frame of a tricycle according to claim 1, characterized in that: A sleeve is installed at the front end of the connecting beam, and the sleeve is suspended and connected with the front end of the same side of the rear frame, and the rubber shock absorbing component is arranged at the suspension connection.

3. A buffer shock absorbing mechanism for a rear frame of a tricycle according to claim 1 or 2, characterized in that: A sleeve is installed at the rear end of the connecting beam near the front side of the rear axle tube. The sleeve is suspended and connected to the front side of the rear axle tube. The rubber shock absorbing component is arranged at the suspension connection.

4. A buffer shock absorbing mechanism for a rear frame of a tricycle according to claim 3, characterized in that: A sleeve is installed at the rear end of the connecting beam near the rear side of the rear axle tube. The sleeve is suspended and connected to the rear side of the rear axle tube. The rubber shock absorbing component is arranged at the suspension connection.

5. A buffer shock absorbing mechanism for a rear frame of a tricycle according to claim 2 or 4, characterized in that: A rubber shock-absorbing component is embedded in the sleeve, and two ends of a suspension shaft arranged in the rubber shock-absorbing component are connected to the front end of the rear frame to form a suspension connection.

6. The buffer shock absorbing mechanism for the rear frame of a tricycle according to claim 3, characterized in that: A rubber shock-absorbing component is embedded in the sleeve, and two ends of a suspension shaft arranged in the rubber shock-absorbing component are connected to the front end of the rear frame to form a suspension connection.

7. The buffer shock absorbing mechanism for the rear frame of a tricycle according to claim 5, characterized in that: A liner is embedded between the sleeve and the rubber shock-absorbing component.

8. The buffer shock absorbing mechanism for the rear frame of a tricycle according to claim 6, characterized in that: A liner is embedded between the sleeve and the rubber shock-absorbing component.

9. A buffer shock absorbing mechanism for a rear frame of a tricycle according to claim 7 or 8, characterized in that: The rubber shock-absorbing component is a rubber sleeve with a through hole in the center, and the through hole is used to pass the suspension shaft.

10. A buffer shock absorbing mechanism for a rear frame of a tricycle according to claim 1, 2, 4, 6 or 7, characterized in that: A hinge seat is respectively installed on the upper end surface of the rear axle tube on one side and the rear frame surface opposite thereto, and the hinge shafts arranged on the two hinge shaft seats are respectively connected to one end portion of a pull rod.

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