CN104973203A - The Quick Release Structure of the Fixed Shaft of the Bicycle Inner Transmission - Google Patents

Abstract

The invention discloses a quick-dismantling structure of an inner speed changer fixing shaft universally used for a chainless transmission bicycle and a chain transmission bicycle, wherein the inner speed changer is fixedly assembled on the fixing shaft of the inner speed changer, the outer part of the inner speed changer is provided with a hub which can hide the inner speed changer and can be positioned and rotated, the two ends of the shaft body of the inner speed changer fixing shaft are provided with external threads with preset length for assembling a fixing nut for fixing the whole inner speed changer, the outer part of the fixing shaft between the external threads at the two ends is provided with at least one concave reinforcing rib which is concave inwards or convex outwards, the shaft center of the inner speed changer fixing shaft is a through channel, and the quick-dismantling structure of the inner speed changer fixing shaft universally used for the chainless transmission bicycle and the chain transmission bicycle is formed by assembling the inner speed changer fixing shaft with the through channel at the shaft center and a through and an adjusting nut of a quick-dismantling body.

Description

The Quick Release Structure of the Fixed Shaft of the Bicycle Inner Transmission

technical field

The invention relates to a fixed shaft structure of an internal transmission commonly used in chainless transmission bicycles and chain transmission bicycles, especially refers to the shaft center of the fixed shaft of the internal transmission is a through passage, and there is at least one concave along the axial direction on the outside. The extended concave ribs or the convex ribs extending outward along the axis can be formed by the combination of the fixed shaft of the internal transmission with a through channel in the shaft center and the penetration of the quick release body and the adjustment nut. The utility model relates to a quick disassembly structure of an internal transmission fixed shaft which can be commonly used in chainless transmission bicycles and chain transmission bicycles, and achieves the benefits of quick disassembly and assembly of a single internal transmission fixed shaft to produce the combination of the internal transmission with a wheel hub and with a vehicle frame.

Background technique

It is generally known that the assembly of various components of the bicycle has progressed from the traditional assembly method to the current quick-release design. This quick-release design means a relatively fast assembly effect, thereby simplifying the assembly of various components, shortening processing time and cost, and improving Productivity and economic benefits.

In terms of bicycle product design, the concept and innovation of quick release technology has been extensively developed and applied to the device and structure of each component of the bicycle, making the structure creation of the bicycle oriented towards the structural design direction of quick disassembly and assembly.

However, looking at the application of the known quick-release technology for each part of the bicycle structure, none of them involve the bicycle transmission part. Considering the technical factors such as the installation and control of the transmission, the general bicycle assembly industry does not consider the quick release of the transmission. As a result, it is time-consuming and labor-intensive for the vehicle factory and general assembly industry to assemble the transmission.

In terms of the design of the bicycle transmission, it has also evolved from the traditional external gear shifting mode to the internal transmission hidden in the wheel hub, and the transmission hidden in the wheel hub is different due to the different ways of external input power. There are chain drive internal transmissions with chain drive, and chainless (shaft) drive internal transmissions without chain drive. Therefore, how to design a kind of internal derailleur quick release structure that can be universally used in chainless transmission bicycles and chain transmission bicycles is the goal that the bicycle industry urgently waits for technological upgrading and innovation.

Contents of the invention

The purpose of the present invention is to provide a quick-release structure for the fixed shaft of the internal transmission of a bicycle, which can be formed by the assembly of the fixed shaft of the internal transmission with a through passage in the shaft center and the penetration of the quick-release body and the adjustment nut. The utility model can be generally applied to the internal transmission fixed shaft of the chainless transmission bicycle and the chain transmission bicycle, so as to achieve the quick disassembly and assembly benefit of the single internal transmission fixed shaft and the combination of the internal transmission and the wheel hub and the vehicle frame.

In order to achieve the above object, the present invention provides a quick-release structure for the fixed shaft of the inner derailleur of a bicycle. The inner derailleur is fixedly assembled on the fixed shaft of the inner derailleur. The fixed shaft cooperates with the quick release device and is fixed on the vehicle frame, wherein the axis of the fixed shaft of the inner transmission is a through channel that cooperates with the quick release device.

The fixed shaft of the internal transmission is provided with at least one concave reinforcing rib extending concavely along the axial direction.

At least one protruding reinforcing rib protruding outward along the axial direction is provided on the outside of the fixed shaft of the internal transmission.

After adopting the above scheme, the present invention has the following advantages:

1. To provide a quick-release structure for the fixed shaft of the internal derailleur that can be commonly used in chain-free and chain-driven bicycles, so that a single technical creation can be widely used in the internal derailleurs of chain-free and chain-driven bicycles;

2. Effectively achieve the advantages of saving space and reducing overall weight;

3. Reduce industrial costs and improve overall industrial productivity;

4. Effectively simplify the disassembly and assembly process of the combination or separation of the bicycle internal transmission and the frame, improve the efficiency of assembly and maintenance, and then improve the economic benefits of the industry;

5. By virtue of the fixed shaft of the internal derailleur provided with a through passage in the shaft center, a single fixed shaft of the internal derailleur can achieve the benefits of quick disassembly and assembly of the internal derailleur and the wheel hub combination and the frame.

Description of drawings

Fig. 1 is a schematic diagram of assembly of an embodiment of the present invention (non-chain-driven shaft-driven internal transmission embodiment);

Fig. 2 is the schematic diagram after the embodiment of Fig. 1 is assembled;

Fig. 3 is a schematic diagram of assembly of another embodiment of the present invention (an embodiment of an internal transmission of a chain drive);

Fig. 4 is a schematic diagram of another embodiment of Fig. 3 after assembly;

Fig. 5 is a schematic diagram of an embodiment of the fixed shaft of the internal transmission of the present invention;

Fig. 6 is the right view of Fig. 5;

Fig. 7 is the A-A sectional view of Fig. 5;

Fig. 8 is the B-B sectional view of Fig. 6;

Fig. 9 is a schematic diagram of another embodiment of the fixed shaft of the internal transmission of the present invention;

Fig. 10 is the right view of Fig. 9;

Fig. 11 is the C-C sectional view of Fig. 9;

Figure 12 is a D-D sectional view of Figure 10;

Fig. 13 is a schematic diagram of an application example of the fixed shaft of the internal transmission in Fig. 5;

Fig. 14 is the E-E sectional view of Fig. 13;

Fig. 15 is a schematic diagram of an application example of the fixed shaft of the internal transmission in Fig. 9;

FIG. 16 is a cross-sectional view along line F-F of FIG. 15 .

Detailed ways

Please refer to the embodiment shown in Fig. 1 that the present invention is applied to the non-chain (shaft) transmission internal transmission of non-chain transmission, and the embodiment shown in Fig. 3 that the present invention is applied to the chain transmission internal transmission, wherein Fig. 1 and Fig. 3 The structure of the internal derailleur is the same, only the external power input mode is the non-chain (shaft) transmission of non-chain transmission, and the application object of another chain transmission is different, which also means that the quick release structure of the fixed shaft of the bicycle internal derailleur of the present invention can be implemented universally for chainless The practical utilization of transmission bicycles and chain transmission bicycles.

Please refer to the embodiment of the chainless (shaft) transmission internal transmission shown in Figure 1 and Figure 2 applied to non-chain transmission, and the embodiment of chain transmission internal transmission shown in Figure 3 and Figure 4, wherein the internal transmission 1 The overall internal transmission 1 is fixedly assembled between the preset external threads 20 at both ends of the fixed shaft 2 with the fixing nuts 10 at both ends, as shown in Fig. 1 and Fig. On the side, the rotatable hub 6 of the internal transmission 1 is overhead hidden with the side cover 3 and the side cover 4 through the bearing 5 positioning.

Please refer to the embodiments of the fixed shaft of the internal transmission shown in FIGS. 5 to 8 . The fixed shaft 2 can be widely used in non-chain-driven chainless (shaft) transmissions and chain-driven internal transmissions. The outer two ends of the fixed shaft 2 are provided with external threads 20 of predetermined length for assembling the fixed nut 10 for fixing the integral internal transmission 1, and the outside of the fixed shaft 2 between the external threads 20 at both ends is provided with at least one shaft extending inwardly along the axial direction. And there is a concave reinforcing rib 21 that strengthens the strength of the fixed shaft, and the concave reinforcing rib 21 can be further designed as a concealed entry for the internal transmission components (such as components that reciprocate and radially move: the shift lever 9 for internal transmission shift switching) (as shown in Figure 13 and Figure 14), the shaft center of the fixed shaft 2 of the internal transmission is provided with a through channel 22 that is penetrated by the quick release device, and the fixed shaft of the internal transmission is provided with a through channel 22 through the shaft center 2. The quick-release body 7 is penetrated, and the quick-release body 7 is threaded and assembled with the adjusting nut 71 to form a single fixed shaft of the internal transmission to generate the combination of the internal transmission 1 and the hub 6 and the quick disassembly and assembly of the frame 8 benefit.

9 to 12 show another embodiment of the fixed shaft of the internal transmission. The fixed shaft 2 can be widely used in chainless (shaft) transmission internal transmissions and chain transmission internal transmissions without chain transmission. The external ends of the fixed shaft 2 are provided with external threads 20 of a predetermined length for the assembly of the fixed nut 10 for fixing the integral internal transmission 1, and the exterior of the fixed shaft 2 between the external threads 20 at both ends is provided with at least one protruding outward along the axial direction. The protruding reinforcing ribs 23 that extend and strengthen the strength of the fixed shaft, the intercostal gap 231 between the protruding reinforcing ribs 23 can be further designed for the fixing and positioning of the internal transmission components (such as gear 91) (as shown in the figure 15 and Figure 16), the shaft center of the internal transmission fixed shaft 2 is provided with a through channel 22 that is penetrated by the quick release device. 7 runs through, and the fast dismounting body 7 runs through and is screwed and assembled with the adjusting nut 71 to form a single internal transmission fixed shaft to produce the combination of the internal transmission 1 and the wheel hub 6 and the quick disassembly and assembly benefits of the vehicle frame 8.

Therefore, the present invention clearly can achieve the following industrial utilization and economic benefit:

1. Provide a quick-release structure that can be commonly used for the fixed shaft of the internal transmission of the chain-free bicycle and the chain-driven bicycle, so that the single technical creation can be widely used in the internal transmission of the chain-free bicycle and the chain-driven bicycle;

2. It can effectively simplify the assembly and disassembly process of the combination or separation of the bicycle internal transmission and the frame, improve the efficiency of assembly and maintenance, and then improve the economic benefits of the industry;

3. Effective use of space and overall weight reduction can be achieved;

4. By virtue of the shaft center of the fixed shaft of the internal transmission being equipped with a through channel that is penetrated by the quick release device, the quick release structure of a single fixed shaft of the internal transmission is achieved, resulting in the combination of the internal transmission and the wheel hub and the quick disassembly and assembly benefits of the frame.

The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of this technical creation are all within the scope of protection of the present invention, and are specifically stated in advance.

Claims (3)

1. the quick-disassembly structure of an internal speed variator of bicycle anchor shaft, this internal speed changer is fixedly assembled on internal speed changer anchor shaft, the outside of internal speed changer is the rotatable wheel hub of hiding internal speed changer, and utilize this internal speed changer anchor shaft to coordinate device for quickly disassembling to be fixed on vehicle frame, it is characterized in that: the axle center of internal speed changer anchor shaft is the penetrating via that a cooperation device for quickly disassembling runs through.

2. the quick-disassembly structure of internal speed variator of bicycle anchor shaft as claimed in claim 1, is characterized in that: this internal speed changer anchor shaft outside is provided with at least one inner concave shape strengthening rib extended along axial indent.

3. the quick-disassembly structure of internal speed variator of bicycle anchor shaft as claimed in claim 1, is characterized in that: this internal speed changer anchor shaft outside is provided with at least one convex-type strengthening rib extended along axial evagination.