CN217374794U

CN217374794U - Bicycle recasting front triangle

Info

Publication number: CN217374794U
Application number: CN202220345952.7U
Authority: CN
Inventors: 萧玫诗
Original assignee: Fengrong Precision Technology Dongguan Co ltd
Current assignee: Fengrong Precision Technology Dongguan Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-09-06
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a bicycle recasting front triangle, which comprises a front triangle lower pipe, wherein a connecting bridge is installed at one end of the front triangle lower pipe, an extension sleeve is installed at one end of the connecting bridge, which is far away from the front triangle lower pipe, a motor seat is installed at the bottom of the front triangle lower pipe, the interior of the motor seat is hollow, arc-shaped grooves are respectively arranged at the front side and the rear side of the bottom of the motor seat, the front triangle lower pipe, the connecting bridge and the extension sleeve are integrally formed, and the original motor seat of the front triangle lower pipe is integrally formed; the utility model discloses well front triangle low tube and connecting bridge and extension sleeve pipe be integrated into one piece setting, and the former motor seat of front triangle low tube is integrated into one piece setting, through the combined design with front triangle low tube and motor seat, reduces the welding deformation tolerance, and the test fracture scheduling problem that intensity is not enough leads to has reduced the production risk, has improved the intensity of whole frame; has strong practicability and shortens the process of welding the frame.

Description

Bicycle recasting front triangle

Technical Field

The utility model relates to a bicycle accessory technical field specifically is a triangle before bicycle recasting.

Background

As a most environment-friendly vehicle, the bicycle not only saves energy and reduces emission, but also can strengthen physical training, is beneficial to strengthening physique, and has wide prospects in development. In the prior art, a motor and a battery are required to be installed on the electric auxiliary bicycle, a pipe material and a motor seat can be separated and welded to form, a lower pipe is easy to deform in the frame manufacturing process, and the frame is not easy to crack due to insufficient strength during testing, so that the testing is not easy to fail due to factors such as welding problems and the like. Therefore, it is desirable to provide a bicycle recast front triangle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a triangle before bicycle recasting possesses the advantage that can improve frame bulk strength to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a triangle before bicycle recasting, includes preceding triangle low tube, the one end of preceding triangle low tube is installed and is connected the bridge, connect the bridge and keep away from the one end of preceding triangle low tube and install extension sleeve, the motor seat is installed to the bottom of preceding triangle low tube, the inside of motor seat sets up for cavity, the arc wall has all been seted up to both sides around the motor seat bottom, preceding triangle low tube sets up for integrated into one piece with being connected the bridge and extension sleeve, the former motor seat of preceding triangle low tube sets up for integrated into one piece.

Preferably, the inside of the connecting bridge is arranged in a hollow mode, and the outside of the connecting bridge is arranged in a streamline mode.

Preferably, the side tangent plane of extension sleeve pipe and the side tangent plane of connecting the bridge set up for the same area, the extension sleeve pipe sets up for the rectangular body.

Preferably, the front surface of the front triangular lower tube and the side close to the connecting bridge are provided with wire holes, and the surface of the front triangular lower tube and the back surface of the wire holes are provided with the connecting seat.

Preferably, the bottom of the front triangular lower pipe is provided with a through groove, and the through groove is communicated with the inside of the front triangular lower pipe.

Preferably, the connecting block is installed to one side of connecting seat, the through-hole has been seted up to the inside of connecting block, the through-hole is circular setting, the surface of connecting block just is located all around of through-hole and all is provided with the screw.

Preferably, a threaded cylinder is installed on each of two sides of the interior of the motor seat, the surface of the threaded cylinder extends to the exterior of the motor seat, and the threaded cylinders are located on two sides of the arc-shaped groove.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses well preceding triangle low tube sets up with being connected the bridge and extension sleeve pipe for integrated into one piece, and the former motor seat of preceding triangle low tube sets up for integrated into one piece, through the combination design with preceding triangle low tube and motor seat, reduces the welding deformation tolerance, and the test fracture scheduling problem that intensity is not enough to lead to has reduced the production risk, has improved the intensity of whole frame, has very strong practicality and shortens the process of welding the frame.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic bottom view of the present invention;

FIG. 3 is an enlarged view of a portion of the area A in FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of a portion of the area B in FIG. 2 according to the present invention;

fig. 5 is a schematic view of the three-dimensional structure of the utility model in the turning state;

FIG. 6 is an enlarged view of a portion of the area C of FIG. 5 according to the present invention;

fig. 7 is a partial enlarged view of the region D in fig. 5 according to the present invention.

In the figure: 1. a front triangular lower pipe; 2. a connecting bridge; 3. an extension sleeve; 4. a motor base; 5. an arc-shaped slot; 6. a wire hole; 7. a connecting seat; 8. a through groove; 9. connecting blocks; 10. a through hole; 11. a screw hole; 12. a threaded barrel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a triangle before bicycle recasting, includes preceding triangle low tube 1, and the one end of preceding triangle low tube 1 is installed and is connected bridge 2, connects bridge 2 and keeps away from the one end of preceding triangle low tube 1 and installs extension sleeve 3, connects bridge 2 through setting up, connects bridge 2 to be used for being connected and fixed with the car front-stock.

Through setting up extension sleeve 3 for improve the length of connecting bridge 2, and conveniently be connected with the bicycle front truck, the front truck of bicycle can insert in extension sleeve 3, be used for conveniently installing and fixing the car front truck.

Referring to fig. 2 and 3, a motor seat 4 is installed at the bottom of the front triangular lower tube 1, the interior of the motor seat 4 is hollow, arc-shaped grooves 5 are formed in the front side and the rear side of the bottom of the motor seat 4, and the motor seat 4 is arranged to protect a motor, a gear and the like installed in the motor seat 4. The arc-shaped groove 5 is used for matching the middle shaft of the bicycle transmission disc.

The front triangular lower pipe 1, the connecting bridge 2 and the extension sleeve 3 are integrally formed, and the original motor seat 4 of the front triangular lower pipe 1 is integrally formed. By the combined design of the front triangular lower pipe 1 and the motor seat 4, the problems of insufficient welding deformation, test cracking caused by insufficient strength and the like are reduced, the production risk is reduced, and the strength of the whole frame is improved; has strong practicability and shortens the process of welding the frame.

The inside of connecting bridge 2 is the cavity setting, and the outside of connecting bridge 2 is streamlined setting. Through setting up streamlined connecting bridge 2, can cooperate the car front-end carrier to install.

The side tangent plane of extension sleeve pipe 3 and the side tangent plane of connecting bridge 2 are the same area setting, and extension sleeve pipe 3 is the setting of rectangle body. The extension sleeve 3 and the connecting bridge 2 are integrally formed, so that the connection stability can be improved.

Referring to fig. 4, a wire hole 6 is formed on the front surface of the front lower triangular tube 1 and on a side close to the connecting bridge 2, and a connecting seat 7 is installed on the surface of the front lower triangular tube 1 and on the back surface of the wire hole 6. Through setting up line hole 6 for make things convenient for bicycle brake cable to enter into preceding triangle lower tube 1 in conceal, can also conveniently penetrate preceding triangle lower tube with the cable that is used for the motor power supply simultaneously.

The bottom of the front triangular lower pipe 1 is provided with a through groove 8, and the through groove 8 is communicated with the inside of the front triangular lower pipe 1. Through setting up logical groove 8, can conveniently maintain and adjust the cable in the preceding triangle lower tube.

Referring to fig. 5, 6 and 7, a connecting block 9 is installed at one side of the connecting seat 7, a through hole 10 is formed in the connecting block 9, the through hole 10 is circular, and screw holes 11 are formed in the surface of the connecting block 9 and around the through hole 10. Through setting up connecting seat 7 and connecting block 9 for the convenience is installed controller or the water bottle seat of control motor, and through setting up screw 11, screw 11 is used for connecting controller or water bottle seat through threaded connection's mode to the convenience.

The two sides of the interior of the motor seat 4 are respectively provided with a thread cylinder 12, the surface of the thread cylinder 12 extends to the exterior of the motor seat 4, and the thread cylinders 12 are positioned on the two sides of the arc-shaped groove 5. By providing the threaded barrel 12, the threaded barrel 12 is used to facilitate mounting and connection with a bicycle rear frame in a threaded manner.

The embodiment also provides a method for casting the bicycle recasting front triangle, which comprises the following steps:

and S1, designing and manufacturing a recasting mold by a recasting process, and manufacturing the recasting mold for producing the front triangular lower pipe, the connecting bridge, the extension sleeve and the motor seat.

S2, designing and manufacturing a core mold, manufacturing the core mold for producing the front triangle according to the pre-designed size, and the sand mold casting is a widely used casting form, as the name indicates, namely manufacturing a casting mold by using sand.

S3, manufacturing a sand core, wherein the sand mold casting needs to put a finished part model or a wooden model into sand, then fill the sand around a pattern, open a box and take out the pattern, and then form a casting mold.

And S4, heating the recasting mould, and heating the recasting mould to achieve the purpose of preheating.

And S5, placing the sand core, and placing the sand core in the recasting mold.

And S6, casting molten aluminum, and after the sand core mold is placed, injecting the molten aluminum into the sand core mold.

And S7, removing the sand saw cap opening, taking out the sand core mold after cooling by aluminum water, and then taking out the sand.

S8, CNC adds the public, polishes the fashioned mould of casting through the CNC digit control machine tool.

And S9, grinding the finished product, and further grinding the molded die to improve the smoothness and the flatness of the surface.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a triangle before bicycle recasting, includes preceding triangle low tube (1), its characterized in that: connect bridge (2) is installed to the one end of preceding triangle low tube (1), connect bridge (2) and keep away from the one end of preceding triangle low tube (1) and install extension sleeve (3), motor seat (4) are installed to the bottom of preceding triangle low tube (1), the inside of motor seat (4) sets up for cavity, arc wall (5) have all been seted up to both sides around motor seat (4) bottom, preceding triangle low tube (1) sets up for integrated into one piece with being connected bridge (2) and extension sleeve (3), preceding triangle low tube (1) former motor seat (4) set up for integrated into one piece.

2. A bicycle recast front triangle according to claim 1 wherein: the inside of connecting bridge (2) is the cavity setting, the outside of connecting bridge (2) is streamlined setting.

3. A bicycle re-cast front triangle as defined in claim 1 wherein: the side tangent plane of extension sleeve pipe (3) and the side tangent plane of connecting bridge (2) are the same area setting, extension sleeve pipe (3) are the setting of rectangle body.

4. A bicycle recast front triangle according to claim 1 wherein: the front surface of the front triangular lower pipe (1) and one side close to the connecting bridge (2) are provided with wire holes (6), and the surface of the front triangular lower pipe (1) and the back surface of the wire holes (6) are provided with connecting seats (7).

5. A bicycle recast front triangle according to claim 1 wherein: the bottom of the front triangular lower pipe (1) is provided with a through groove (8), and the through groove (8) is communicated with the inside of the front triangular lower pipe (1).

6. A bicycle recast front triangle according to claim 4 wherein: connecting block (9) are installed to one side of connecting seat (7), through-hole (10) have been seted up to the inside of connecting block (9), through-hole (10) are circular setting, the surface of connecting block (9) just is located all around through-hole (10) and all is provided with screw (11).

7. A bicycle recast front triangle according to claim 1 wherein: a screw thread section of thick bamboo (12) are all installed to the inside both sides of motor seat (4), the surface of a screw thread section of thick bamboo (12) extends to the outside of motor seat (4), a screw thread section of thick bamboo (12) are located the both sides of arc wall (5).