KR200239466Y1 - Assembly for the adjustable crank shaft of bike - Google Patents

Abstract

The present invention provides a variable pedal drive of a bicycle in which a pedal shaft that transmits the pedal's rotational force to the rear wheel is extended during driving so that the maximum driving energy can be exhibited with minimum driving energy. The present invention relates to an assembling tube that allows the device to be firmly mounted as a simple assembly structure without changing the structure of various bicycles, and the fixed case (10, 10 ') on both sides of the shaft hole (2) of the bicycle frame (1) is driven by a driving case (4). The distance of the pedal from the pedal shaft 8 is variable by driving the drive bar 7 coupled with the pedals to the geared gears 5 and 5 'of the 4') gears from the drive cases 4 and 4 '. In constructing the assembly pipe (3) for mounting the variable pedal drive of the bicycle to the shaft hole (2) of the bicycle frame (1), it can be screwed to both sides of the bicycle frame (1) shaft hole (2) The boss 13 is formed in the screw assembly 11 and the inner side so that Side fixed gears 10 and 10 ', a bearing 19 coupled to the inside of the fixed gears 10 and 10' to support the rotation of the pedal shaft 8, and a boss 13 of the fixed gears 10 and 10 '. Splines 15 are formed on the ends of the assembly members 14 and 14 'and the assembly members 14 and 14' which are fitted to one side of the fixed gear 10 and 10 '. There is a gist of the present invention, which consists of fastening gears 16 and 16 'which are engaged with each other.

Description

Assembly for the adjustable crank shaft of bike

The present invention is to provide a variable pedal drive of the bicycle to exhibit the maximum driving energy with the minimum driving energy by extending the distance between the pedal shaft and the pedal that transmits the pedal rotation force to the rear wheel, the variable pedal drive The present invention relates to an assembling tube that enables the device to be firmly mounted as a simple assembly structure without changing the structure of various bicycles.

Existing bicycle has a fixed crankshaft distance between the pedal shaft and the pedal to provide a driving force only by the driving force of the pedal coupled to the crankshaft bar, such a driving structure (driving force providing structure) of the pedal from the pedal shaft Since the rotational force is within a certain radius of rotation, of course, more driving energy is required, especially in an uphill climb, and this is to improve the driving energy by maximizing driving energy by installing transmission gears to obtain more reasonable driving energy. Most widely generalized.

However, since the rotation radius of the pedal, which is the driving force of the driving force, is also constant, and the same driving energy is always provided, it is difficult to expect to provide a more fundamental and efficient driving force. The development of means to maximize this was required.

In response to these demands, the present applicant has already proposed a number of variable pedal drive devices for bicycles capable of exhibiting maximum driving energy with minimum energy consumption.

In mounting a bicycle with such a pedal pedal device of the bicycle, it is necessary to assemble a separate assembly pipe for applying the variable pedal drive device to the shaft hole of the bicycle frame to which the pedal shaft is coupled. It could be applied without structural change, but it was not enough to provide more active compatibility for applying to various models and various types of bicycles, and there was a disadvantage that it was difficult for the user to assemble and mount it directly due to the complicated assembly structure.

In addition, it is also coupled to a simple screw fastening structure had a problem that the fastening portion is likely to be released due to the load and vibration, etc. due to the rotational driving of the pedal.

Therefore, in the present invention, a variable pedal drive device of a bicycle, which is configured in a variable structure in which the rotation radius of the pedal is extended from the pedal shaft when driving, can maximize the driving energy with minimum driving energy consumption, is mounted on various bicycles. In order to provide a variety of models and types of bicycles with universal compatibility, and to provide an assembly tube that can be easily mounted with a simple assembly, especially the coupling screwed to the bicycle frame shaft hole pedal It is to ensure stable assembly and operability by eliminating the fear of being released by other loads and vibrations in the rotational drive of.

1 is an exploded perspective view showing a preferred embodiment of the present invention

2 is a cross-sectional view of the coupling state of the present invention

3 is a cross-sectional view of the working state of the present invention

Figure 4a, 4b is a cross-sectional view and a side view showing the assembly member of the present invention

☞ Explanation of symbols used in the main part of the drawing ☜

1; frame 2; axes

3; Assembly 4,4 '; Drive case

5,5 '; Planetary gear 6; Connecting arm

7; drive bar 8; pedal shaft

9,9 '; Screw assembly 10,10'; Fixed gear

11; screw assembly 12; assembly

14, 14 '; Assembly member 14; Boss

15; Spline 16, 16 '; Tightening difference

17; flange 18; space

19; bearing

The assembly pipe 3 is inserted into and coupled to the shaft hole 2 of the bicycle frame 1, and fixed gears 10 and 10 'are formed at both sides of the assembly pipe 3 to form the planetary bodies of the driving cases 4 and 4'. Engaging with the gears 5, 5 ', the driving bar 7 connected to the connecting arm 6 is projected out of the drive case 4, 4' so that the distance of the pedal from the pedal shaft 8 is variably extended. In the variable pedal drive of the bicycle,

The present invention improves the configuration of the assembly pipe (3) for mounting the variable pedal drive device consisting of the pedal shaft (8) and the drive case (4, 4 ') to the shaft hole (2) of the bicycle frame (1) If there is a feature, look at in detail with respect to the configuration of the present invention as follows.

1 is an exploded perspective view showing an embodiment of the present invention, Figure 2 is a cross-sectional view of the coupling state of the present invention, Figure 3 is a cross-sectional view of the working state of the present invention,

Assembling hole 12 so that the screw assembly 11 and the pedal shaft 8 are inserted into the outer circumferential surface to be screwed to the screw assembly (9, 9 ') formed on both sides of the shaft hole (2) of the bicycle frame (1) (12) The fixed gears (10, 10 ') formed with) are screwed on both sides of the shaft hole (2) for coupling.

In addition, a boss (13) is formed at one side of the fixed gear (10, 10 ') to form a spline (15) that is coupled to the boss (13) of the fixed gear (10, 10'). To allow the fitting of the tubular assembly members 14 and 14 ', the coupling teeth 16 and 16' are formed at the ends of the both assembly members 14 and 14 '. 4a, 4b)

The one side of the fixed gear (10 ') is formed with a flange 17 to provide a shift when the fixed gear 10' is fastened and assembled on the screw assembly (9, 9 ') of the shaft hole, The flange 17 may be implemented together with both fixed gears 10 and 10 '.

In addition, a space portion 18 is formed at the end of the one side assembly member 14 'to exert a predetermined tension function against the pressure acting on the fastening gear 16' formed on the outer surface. (This will be described in more detail later.)

In addition, the bearing 19 is inserted into the inside of the boss 13 is formed inside the two fixed gear (10, 10 ') and inserted into the fixed gear (10, 10') and the assembly member (14, 14 '). To rotate support the pedal shaft (8) to be coupled.

Both assembly members 14 and 14 'are formed at the ends of the both assembly members 14 and 14' so that both assembly members 14 and 14 'are coupled when the assembly pipe 3 is coupled to the shaft hole 2 of the bicycle frame 1. Both fastening gears 16 and 16 'which have a fastening force not to rotate arbitrarily and maintain the assembled pipe 3 coupled to the shaft hole 2 to maintain a firmly coupled state are formed in a mountain shape which are engaged with each other in opposite directions. It can be carried out with gears and uneven surfaces.

The present invention configured as described above is compatible with various bicycles, the variable pedal drive device that provides the maximum driving energy with the minimum energy consumption by varying the distance between the pedal shaft 8 and the pedal in the driving direction when driving. In order to maintain excellent coupling strength by fastening gears 16 and 16 'which are engaged with each other at the ends of both assembly members 14 and 14', it is possible to achieve excellent assembly and operational stability. Looking at the operation of the invention through an example as follows.

A bearing 19 is inserted into both of the fixed gears 10 and 10 ', and the splines 15 of the assembly members 14 and 14' are fitted into the boss 13 so that both fixed gears 10 and 10 'are fitted. The assembly members 14 and 14 'are coupled to each other.

As described above, the fixed gears 10 and 10 'coupled to one side of the assembling members 14 and 1'4 have pedal shafts 8 inward in such a state that the assembling members 14 and 14' face each other. Screwed to both screw assembly (9, 9 ') of the bicycle frame (1) shaft hole (2) in the state to be inserted.

At this time, by using the flange 17 formed on the fixed gear (10, 10 ') it is possible to perform the screw assembly (9, 9') fastening operation of the shaft hole (2) more easily.

In this way, the screw assembly portion 11 of the fixed gears 10 and 10 'is fastened to the screw assembly portions 9 and 9' of the shaft hole 2 at both sides of the shaft hole 2 with the pedal shaft 8 inserted therein. When coupled to each other, the coupling teeth (16, 16 ') of the opposite ends of the assembly member (14, 14') are engaged with each other.

In this state, when the fixed gears 10 and 10 'are tightened to the inside of the shaft hole 2, both fixed gears 10 and 10' are rotated in opposite directions to be coupled with the fixed gears 10 and 10 '. The assembly members 14 and 14 'are deeply coupled to the inside, and the coupling teeth 16 and 16' formed at both ends of the assembly members 14 and 14 'are closely adhered to each other to maintain a tightly coupled state. do.

At this time, the space portion 18 formed at the end of the one side assembly member 14 'is provided with a predetermined tension with respect to the repulsive force generated when the coupling teeth 16 and 16' of the both assembly members 14 and 14 'are tightly coupled. As a result, both fixed gears 10 and 10 'can be tightly tightened. Accordingly, the engagement gears 16 and 16' of both of the assembly members 14 and 14 'are strongly forcibly rotated while being engaged with each other. Tightening until it is impossible to rotate is a strong combination of each other with very high adhesion and fastening force.

Therefore, even if the load and vibration caused by the driving of the pedal act on the fixed gears 10 and 10 ', the shaft hole 2 is formed by fastening gears 16 and 16' which are closely coupled to the assembly members 14 and 14 '. There is no fear that the fixed gears (10, 10 ') screwed to the part will be partially loosened, and the fixed gears (10, 10') coupled to the shaft hole (2) by the load or vibration are reversed. The possibility of breaking the coupling relationship by rotating in the reverse direction of the coupling) is also eliminated.

As described above, when the assembly tube 3 is assembled on the bicycle frame 1, the drive cases 4 and 4 'are coupled to both sides of the pedal shaft 8 of the assembly tube 3 as usual. Detailed description of the operation of the pedal drive system is omitted.

As described above, the present invention extends the distance between the pedal providing the driving energy of the bicycle and the pedal shaft 8 in the driving direction when the pedal is driven, thereby exhibiting the maximum driving energy with the minimum driving energy consumption. The assembly pipe (3) for mounting the variable pedal drive device to the bike can be applied to various bicycles with excellent compatibility without changing the structure. By eliminating the fear of being released by vibration, various effects can be expected such as excellent assembly stability and excellent operational stability.

Claims (3)

A driving bar (7) in which a pedal is coupled by gear-coupling the fixed gears (10, 10 ') on both sides of the shaft hole (2) of the bicycle frame (1) with the planetary gears (5, 5') of the driving cases (4, 4 '). For mounting the variable pedal drive of the bicycle to the shaft hole 2 of the bicycle frame 1, in which the pedal is moved in and out from the drive cases 4 and 4 'so that the distance of the pedal from the pedal shaft 8 is increased. In constructing the tube 3, Both side fixed gears 10 and 10 'having a screw assembly 11 and a boss 13 formed therein so as to be screwed to both sides of the bicycle frame 1 and the shaft hole 2, and fixed gears 10 and 10'. A bearing 19 coupled to the inner side to support the rotation of the pedal shaft 8 and a spline 15 coupled to the boss 13 of the fixed gears 10 and 10 'are formed to fix the gear 10 and 10'. It is characterized in that the assembly member (14,14 ') to be fitted to one side, and the coupling teeth (16, 16') formed on the end faces facing each other of the assembly member (14,14 ') are engaged with each other. Assembly tube of variable bicycle pedal drive. The method of claim 1, The fastening gear (16, 16 ') is formed of a concave-convex surface is assembled tube of a variable bicycle pedal drive device, characterized in that configured to interlock with each other in the reverse direction. The method of claim 1, The one side assembly member (14 ') assembly tube of the variable bicycle pedal drive device, characterized in that formed by forming a space (18) to give a predetermined tension (tension) to the fastening gear (16').