Front fork for reinforcing vertical pipe

Abstract

The utility model discloses a front fork of a reinforced vertical pipe in the technical field of electric vehicle structures, which comprises a yoke plate, a shock absorber and a front fork leg, the front fork leg is connected with the yoke plate through the shock absorber, and the front fork of the reinforced vertical pipe further comprises a reinforced connecting pipe. The reinforcing connecting pipes are installed on the two sides of the yoke plate relative to the front fork leg, each reinforcing connecting pipe comprises at least one connecting section and at least one reinforcing section with the caliber larger than that of the connecting section, the connecting sections are configured to be connected with a handlebar, and the reinforcing sections are configured to be connected with the yoke plate; the reinforced connecting pipe comprises at least one connecting section and at least one reinforcing section with the caliber larger than that of the connecting section, the high-strength lining pipe can be installed on the inner wall of the reinforcing section with the caliber increased, the strength of the reinforcing section can be increased through the high-strength lining pipe, and the strength of the connecting position of the connecting pipe and the yoke plate is increased. The capacity of the reinforced connecting pipe for bearing tensile stress generated by bumping caused by uneven road surfaces is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle structures, in particular to a front fork with a reinforced seat tube. Background Art

[0002] Compared with non-motorized vehicles driven by human pedaling, electric vehicles and motorcycles have the characteristics of fast travel speed and labor saving. Therefore, electric vehicles and motorcycles are very popular among users.

[0003] The front fork of an electric vehicle generally uses a front fork frame to connect the steering column and the front fork. The existing front fork frame is composed of a front fork riser and a connecting plate, wherein the front fork riser and the connecting plate are fixedly connected. For example, the front fork described in China CN201580503U, the conventional front fork riser is as shown in the patent document, and for the convenience of production and processing, the front fork riser is generally a round tube with the same upper and lower diameters.

[0004] However, in the field of shared electric vehicles, shared electric vehicles need to reduce their weight as much as possible, so the diameter of the hole on the handlebars that is connected to the front fork stem is also correspondingly smaller. If the front fork is designed uniformly according to the diameter of the hole left in the handlebars, the overall strength of the front fork stem will not meet practical standards. In extreme cases, it will bend or break due to the action of strong stress, which poses a greater risk to consumers. Utility Model Content

[0005] The utility model aims to provide a front fork with a reinforced seat tube to solve the above-mentioned technical problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A front fork with a reinforced seat tube comprises a connecting plate, a shock absorber and a front fork leg, wherein the front fork leg is connected to the connecting plate via the shock absorber, and the front fork with a reinforced seat tube further comprises a reinforcing connecting pipe, wherein the reinforcing connecting pipe is installed on both sides of the connecting plate relative to the front fork leg, and wherein the reinforcing connecting pipe comprises at least one connecting section and at least one reinforcing section having a larger diameter than the connecting section, wherein the connecting section is configured to be connected to a handlebar, and the reinforcing section is configured to be connected to the connecting plate.

[0008] As a further solution of the utility model: the inner wall of the reinforcement section is provided with a high-strength liner.

[0009] As a further solution of the utility model: the inner wall of the reinforcement section and the outer wall of the high-strength liner are interference fit.

[0010] As a further solution of the utility model: the inner wall of the reinforcement section is welded to the outer wall of the high-strength liner.

[0011] As a further solution of the utility model: a transition section is also arranged on the reinforcement section, and the transition section is connected to the connection section.

[0012] As a further solution of the utility model: the connecting section is configured as an opening section and a threaded section, one end of the threaded section is connected to the reinforcement section, and the other end of the threaded section is connected to the opening section, and the opening section and the threaded section are configured to be connected to the handlebar.

[0013] As a further solution of the utility model: the opening section is provided with a through hole relative to the installation position of the handlebar, and the surface of the threaded section is provided with threads relative to the installation position of the handlebar.

[0014] As a further solution of the utility model: the connecting plate is fixedly installed at the end of the reinforcing section away from the transition section, and two shock absorbers are arranged on the side of the connecting plate away from the reinforcing section.

[0015] As a further solution of the utility model: a front fork leg is provided on one side of the two shock absorbers away from the connecting plate, and the front wheel is rotatably connected between the two front fork legs through a bearing.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The reinforced connecting pipe of the utility model comprises at least one connecting section and at least one reinforcing section with a diameter larger than that of the connecting section. A high-strength liner can be installed on the inner wall of the reinforcing section with an increased diameter. The high-strength liner can increase the strength of the reinforcing section, that is, increase the strength of the connection with the connecting plate, increase the ability of the reinforced connecting pipe to bear the tensile stress caused by the bumps caused by the uneven road surface, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0021] Figure 4 It is a side view of the present invention.

[0022] In the figure: 1. opening section; 2. threaded section; 3. transition section; 4. reinforcement section; 5. through hole; 6. high-strength liner; 7. connecting plate; 8. shock absorber; 9. front fork leg. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] A front fork with a reinforced seat tube, such as Figure 1-4 As shown, it includes a reinforced connecting pipe, a connecting plate 7, a shock absorber 8 and a front fork leg 9. The reinforced connecting pipe includes at least one connecting section and at least one reinforcing section 4 with a diameter larger than the connecting section. The connecting section is configured to be connected to the handlebar, and the reinforcing section 4 is configured to be connected to the connecting plate 7. The inner wall of the reinforcing section 4 is provided with a high-strength liner 6. In this arrangement, the diameter of the reinforcing section 4 is larger than that of the connecting section in order to increase the diameter of the reinforcing section 4 so that the high-strength liner 6 can be inserted into the inner wall of the reinforcing section 4, thereby improving the strength of the reinforced connecting pipe, increasing its ability to bear the tensile stress caused by the bumps caused by the uneven road surface, and extending its service life.

[0026] In the utility model: the inner wall of the reinforcement section 4 is interference fit with the outer wall of the high-strength liner 6, and the inner wall of the reinforcement section 4 is welded to the outer wall of the high-strength liner 6. Such an arrangement allows the high-strength liner 6 to be firmly installed on the inner wall of the reinforcement section 4, thereby improving the strength of the reinforcement section 4.

[0027] In the utility model: the reinforcing section 4 is also provided with a transition section 3, and the transition section 3 is connected to the connecting section. In this arrangement, when the length of the connecting section and the reinforcing section 4 is not enough to meet the requirement of the length of the reinforcing connecting pipe, the transition section 3 can be used to make up for the length deficiency.

[0028] In the utility model: the connecting section is configured as an opening section 1 and a threaded section 2, one end of the threaded section 2 is connected to the reinforcement section 4, and the other end of the threaded section 2 is connected to the opening section 1, and the opening section 1 and the threaded section 2 are configured to be connected to the handlebar.

[0029] In the utility model: the top end of the opening section 1 is inserted into the inner hole of the handlebar riser, the opening section 1 is provided with a through hole 5, and the opening section 1 and the handlebar riser can be fixedly connected by passing a bolt through the through hole 5, and a threaded section 2 is provided on the surface of the threaded section 2 relative to the installation position of the handlebar.

[0030] In the present invention, the connecting plate 7 is fixedly mounted on the end of the reinforcing section 4 away from the transition section 3, and the reinforcing section 4 is located at the center of the connecting plate 7, so that the connecting plate 7 is subjected to balanced force.

[0031] In the utility model, two shock absorbers 8 are arranged on one side of the connecting plate 7 away from the reinforcing section 4, and the shock absorbers 8 can reduce the bumps caused by the uneven road surface.

[0032] In the utility model: a front fork leg 9 is arranged on one side of the two shock absorbers 8 away from the connecting plate 7, and the front wheel is rotatably connected between the two front fork legs 9 through a bearing.

[0033] In summary, the reinforced connecting pipe of the utility model includes at least one connecting section and at least one reinforcing section 4 with a diameter larger than the connecting section. The inner wall of the reinforced section 4 with an increased diameter can be installed with a high-strength liner 6. The high-strength liner 6 can increase the strength of the reinforced section 4, that is, increase the strength of the connection with the connecting plate 7, increase the ability of the reinforced connecting pipe to bear the tensile stress caused by the bumps caused by the uneven road surface, and extend the service life.

[0034] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A front fork with a reinforced seat tube, comprising a connecting plate (7), a shock absorber (8) and a front fork leg (9), wherein the front fork leg (9) is connected to the connecting plate (7) via the shock absorber (8), characterized in that: The front fork with reinforced seat tube also includes a reinforced connecting tube, which is installed on both sides of the connecting plate (7) relative to the front fork leg (9), and includes at least one connecting section and at least one reinforcing section (4) with a diameter larger than that of the connecting section, wherein the connecting section is configured to be connected to the handlebar, and the reinforcing section (4) is configured to be connected to the connecting plate (7).

2. A front fork with a reinforced seat tube according to claim 1, characterized in that: The inner wall of the reinforcement section (4) is provided with a high-strength lining pipe (6).

3. A front fork with a reinforced seat tube according to claim 2, characterized in that: The inner wall of the reinforcement section (4) and the outer wall of the high-strength liner (6) are interference fit.

4. A front fork with a reinforced seat tube according to claim 2, characterized in that: The inner wall of the reinforcement section (4) is connected to the outer wall of the high-strength liner (6) by welding.

5. The front fork with a reinforced seat tube according to claim 2, characterized in that: The reinforcing section (4) is also provided with a transition section (3), and the transition section (3) is connected to the connecting section.

6. The front fork with a reinforced seat tube according to claim 1, characterized in that: The connecting section is configured as an opening section (1) and a threaded section (2); one end of the threaded section (2) is connected to the reinforcement section (4); the other end of the threaded section (2) is connected to the opening section (1); the opening section (1) and the threaded section (2) are configured to be connected to the handlebar.

7. The front fork with a reinforced seat tube according to claim 6, characterized in that: The opening section (1) is provided with a through hole (5) relative to the installation position of the handlebar, and the surface of the threaded section (2) is provided with threads relative to the installation position of the handlebar.

8. The front fork with a reinforced seat tube according to claim 1, characterized in that: The connecting plate (7) is fixedly mounted on the end of the reinforcing section (4) away from the transition section (3), and two shock absorbers (8) are provided on the side of the connecting plate (7) away from the reinforcing section (4).

9. The front fork with a reinforced seat tube according to claim 8, characterized in that: A front fork leg (9) is provided on one side of the two shock absorbers (8) facing away from the connecting plate (7), and the front wheel is rotatably connected between the two front fork legs (9) via a bearing.

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