CN219857488U - High-speed electric motor car bottom fork and frame coupling mechanism - Google Patents

Abstract

The utility model relates to a connection mechanism of a bottom fork and a frame of a high-speed electric vehicle, which comprises a first connecting fork and a second connecting fork, wherein the first connecting fork is hinged with the second connecting fork, one end of the first connecting fork, which is hinged with the second connecting fork, is provided with a connecting finger, one sides of the two connecting fingers are propped against each other to form a matching surface, and the two matching surfaces are in running fit. The two connecting forks can be transversely limited through the matching surface, so that the free swing stroke of the bottom fork is reduced, and the stability of the vehicle is improved.

Description

High-speed electric motor car bottom fork and frame coupling mechanism

Technical Field

The utility model relates to the technical field of electric vehicle bottom forks, in particular to a high-speed electric vehicle bottom fork and frame connecting mechanism.

Background

The electric motor car includes electric bicycle and electric motor car, current frame is as shown in fig. 1, frame 1's tail end is fork 2, and frame 1 is close to the one end of fork 2 and has welded hinge mount 4, and the one end that fork 2 is close to hinge mount 4 has welded connecting axle 3, because connecting axle 3 and hinge mount 4 are the hole axle cooperation use generally, can produce moment of torsion or moment of flexure when fork 2 swings normally from top to bottom, therefore can not avoid producing wearing and tearing in the use of hole axle, after the hole axle wearing and tearing to a certain extent, the connecting axle of fork can produce side-to-side in the shaft hole, leads to the car unstable.

Disclosure of Invention

In order to avoid horizontal swing of the flat car and improve stability of the car, the utility model provides a connecting mechanism of a flat fork and a car frame of a high-speed electric car.

The utility model provides a high-speed electric vehicle bottom fork and frame connecting mechanism which adopts the following technical scheme:

the high-speed electric vehicle bottom fork and frame coupling mechanism comprises a first connecting fork and a second connecting fork, wherein the first connecting fork is hinged with the second connecting fork, one end of the first connecting fork, which is hinged with the second connecting fork, is provided with a connecting finger, one sides of the two connecting fingers are propped against each other to form a matching surface, and the two matching surfaces are in running fit.

By adopting the technical scheme: all set up on first connecting fork and the second connecting fork and connect the finger, the rotation position between two connecting fingers is the mating surface, because the mating surface that connects the finger needs the laminating, can transversely spacing two connecting forks through the mating surface to reduce the free swing stroke of fork, improve the stationarity of car.

The first connecting fork and the second connecting fork are hinged, the support part is used for providing support when the connecting fingers rotate, the connecting fingers corresponding to the first connecting fork are provided with cylindrical holes, the connecting fingers corresponding to the second connecting fork are provided with threaded holes, bolts are arranged in the cylindrical holes, and one ends of the bolts are fixedly connected with the threaded holes.

By adopting the technical scheme: the connecting fingers corresponding to the first connecting fork and the second connecting fork are respectively provided with a cylindrical hole and a threaded hole, the two connecting fingers are connected through the bolt, the bolt can move in the cylindrical hole, the two connecting fingers can rotate relatively, the matching surface between the two connecting fingers is set to be a matching surface, and the fact that the matching of the screw and the threaded hole is moderate is required to be achieved, and the screw cannot rotate due to tightening.

The cylinder hole is internally provided with a bushing, the cylinder hole is internally provided with a cylindrical rotating core, the rotating core is embedded in the bushing and is in running fit with the bushing, the length of the rotating core is slightly larger than that of the bushing, the diameter of the head of a bolt is larger than that of the rotating core, and the bolt penetrates through the rotating core and the head of the bolt abuts against the rotating core on the matching surface of the second connecting fork.

By adopting the technical scheme: the bush is embedded in the cylinder hole, and the bush is fixed with the connection finger that first connection fork corresponds, and changeing the core and the connection finger fixed connection of second connection fork again, set up the length that changees the core slightly more than the length of bush, the bolt can screw up, can guarantee the fixed effect of two connection fingers, still normal running fit between bush and the changeing the core simultaneously to be normal running fit between two connection forks has been guaranteed.

The bushing is a graphite bushing.

By adopting the technical scheme: compared with the conventional rubber sleeve, the graphite bushing has longer service life and does not need daily oiling maintenance.

The matching surface is a finish machining surface.

By adopting the technical scheme: the mating surface adopts the finish machining face for reduce friction and wearing and tearing that both rotate and produce, thereby reduce the rotation interference between two connecting forks, reduce the heat generation, can prolong spare part's life.

The support part is an arc concave surface, and one end of the connecting finger is an arc convex surface in sliding fit with the arc concave surface.

By adopting the technical scheme: when the first connecting fork and the second connecting fork rotate relatively, the arc concave surface of the connecting finger can slide along the arc concave surface of the supporting part, and the supporting part provides guiding support for the connecting finger and is used for obliquely supporting the frame, so that the damage to the hinge part between the two connecting fingers is reduced, and the strength of the structure is improved.

In summary, the utility model has the following beneficial effects:

1. the matching surface is arranged, and the two connecting forks can be transversely limited through the matching surface, so that the free swing stroke of the bottom fork is reduced, and the stability of the vehicle is improved.

2. The bushing is arranged, the cylindrical hole and the threaded hole are respectively formed in the two connecting fingers, the bushing is embedded in the threaded hole, and the rotating core is arranged in the bushing, so that the stability of rotation between the two connecting forks is improved, and the rotating effect of the two connecting fingers can be improved by setting the length of the rotating core to be slightly larger than that of the bushing.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of the connection state of the present utility model;

FIG. 3 is an exploded view of FIG. 1;

fig. 4 is a schematic cross-sectional view of fig. 1.

Reference numerals illustrate: 1. a frame; 2. a bottom fork; 3. a connecting shaft; 4. a hinge base; 100. a first connection fork; 101. a cylindrical hole; 200. a second connecting fork; 201. a threaded hole; 300. connecting fingers; 301. a mating surface; 400. rotating the core; 500. a bushing; 600. a bolt; 700. a support part; 800. a circular arc convex surface.

Detailed Description

The utility model is described in further detail below with reference to fig. 2-4.

The embodiment of the utility model discloses a connection mechanism of a bottom fork and a frame of a high-speed electric vehicle.

Example 1:

as shown in fig. 2, the high-speed electric vehicle bottom fork and frame connecting mechanism comprises a first connecting fork 100 and a second connecting fork 200, the first connecting fork 100 and the second connecting fork 200 are hinged, one end of each of the first connecting fork 100 and the second connecting fork 200, which are hinged, is provided with a connecting finger 300, one sides of the two connecting fingers 300 are abutted to form a matching surface 301, and the two matching surfaces 301 are in running fit. It can be seen that the first connecting fork 100 and the second connecting fork 200 are respectively provided with a connecting finger 300, the rotating parts between the two connecting fingers 300 are the matching surfaces 301, and the matching surfaces 301 of the connecting fingers 300 need to be attached, so that the two connecting forks can be transversely limited through the matching surfaces 301, thereby reducing the free swing stroke of the bottom fork 2 and improving the stability of the vehicle.

Further, a support portion 700 is further provided at one end of the first connecting fork 100 and the second connecting fork 200, which is hinged to each other, the support portion 700 provides support when the connecting finger 300 rotates, a cylindrical hole 101 is provided on the connecting finger 300 of the first connecting fork 100, a threaded hole 201 is provided on the connecting finger 300 of the second connecting fork 200, a bolt 600 is provided in the cylindrical hole 101, one end of the bolt 600 is fastened and connected with the threaded hole 201, and a mating surface between the two connecting fingers 300 is a mating surface. At this time, the cylindrical hole 101 and the threaded hole 201 are respectively provided on the connecting fingers 300 corresponding to the first connecting fork 100 and the second connecting fork 200, the two connecting fingers 300 are connected through the bolt 600, because the bolt 600 can move in the cylindrical hole 101, the two connecting fingers 300 can rotate relatively, meanwhile, the matching surface between the connecting fingers 300 is set as the matching surface, friction and abrasion generated by rotation of the two connecting fingers are reduced, rotation interference between the two connecting forks is reduced, and it is noted that the matching between the screw and the threaded hole 201 should be moderate, and if the bolt 600 screws the two connecting fingers 300, the rotation cannot be caused.

Example 2:

as shown in fig. 3 and 4, this embodiment differs from embodiment 1 in that: the cylindrical hole 101 is internally provided with the bushing 500, the cylindrical hole 101 is internally provided with the cylindrical rotating core 400, the rotating core 400 is embedded in the bushing 500, the rotating core 400 and the bushing 500 are in running fit, the length of the rotating core 400 is slightly larger than that of the bushing 500, the diameter of the head of the bolt 600 is larger than that of the rotating core 400, the bolt 600 penetrates through the rotating core 400, the head of the bolt 600 tightly supports the rotating core 400 on the matching surface of the second connecting fork 200, the bushing 500 is embedded in the cylindrical hole 101, the bushing 500 is fixed with the connecting finger 300 corresponding to the first connecting fork 100, the rotating core 400 is fixedly connected with the connecting finger 300 of the second connecting fork 200, and the length of the rotating core 400 is slightly larger than that of the bushing 500.

In the above embodiment, in order to reduce friction between the two connecting fingers 300, the mating surface is a finished surface. The finish machining surfaces are adopted by the matching surfaces, and oil is applied between the two finish machining surfaces, so that heat generation between two connecting fingers 300 can be reduced, the service life of parts can be prolonged, and the bottom fork is loosened due to long-term matching between the connecting shaft 3 and the hinge seat 4, so that the maintenance times are reduced, and the maintenance cost is reduced. The manner of replacing the bushing 500 also greatly shortens the maintenance man-hour after the bushing 500 is worn.

Further, the bushing 500 employs a graphite bushing that has a longer life than conventional rubber bushings and does not require routine maintenance for refueling.

Further, the supporting portion 700 is a circular arc concave surface, and one end of the connecting finger 300 is a circular arc convex surface 800 slidably engaged with the circular arc concave surface. When the first connecting fork 100 and the second connecting fork 200 rotate relatively, the arc concave surface of the connecting finger 300 can slide along the arc concave surface of the supporting portion 700, and the supporting portion 700 provides guiding support for the connecting finger 300 to support the frame 1 obliquely, so that damage to the hinge between the two connecting fingers 300 is reduced, and further the strength of the structure is improved.

While the utility model has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this utility model will occur to those skilled in the art in light of the spirit and principles of this utility model, and such modifications and alterations are also within the scope of this utility model.

Claims (6)

1. The connection mechanism of the bottom fork and the frame of the high-speed electric vehicle comprises a first connection fork (100)

And the second connecting fork (200), the first connecting fork (100) is hinged with the second connecting fork (200), and is characterized in that one end of the first connecting fork (100) hinged with the second connecting fork (200) is provided with connecting fingers (300), one sides of the two connecting fingers (300) are propped against to form a matching surface (301), and the two matching surfaces (301) are in running fit.

2. The mechanism as claimed in claim 1, wherein the first and second connecting forks (100, 200) are further provided at their hinged ends with a support portion (700), the support portion (700) providing support when the connecting finger (300) rotates, the connecting finger (300) corresponding to the first connecting fork (100)

The connecting finger (300) corresponding to the second connecting fork (200) is provided with a threaded hole (201), the cylindrical hole (101) is internally provided with a bolt (600), and one end of the bolt (600) is in fastening connection with the threaded hole (201).

3. The high-speed electric vehicle bottom fork and frame connection mechanism according to claim 2, characterized in that a bushing (500) is installed in the cylindrical hole (101), a cylindrical rotating core (400) is further arranged in the cylindrical hole (101), the rotating core (400) is embedded in the bushing (500) and the rotating core (400) and the bushing (500) are in running fit, the length of the rotating core (400) is slightly larger than that of the bushing (500), the diameter of the head of the bolt (600) is larger than that of the rotating core (400), the bolt (600) passes through the rotating core (400), and the head of the bolt (600) abuts against the rotating core (400) on the matching surface (301) of the second connecting fork (200)

And (3) upper part.

4. A high-speed electric vehicle fork and frame connection according to claim 3, characterized in that the bushing (500) is a graphite bushing.

5. The high-speed electric vehicle fork and carriage connection mechanism of any of claims 1-4 wherein said mating surface (301) is a finished surface.

6. The high-speed electric vehicle bottom fork and frame connection mechanism according to claim 2, wherein the supporting portion (700) is a circular arc concave surface, and one end of the connecting finger (300) is a circular arc convex surface (800) in sliding fit with the circular arc concave surface.