TWI761019B - Crank gear assembly and driving mechanism applied to the assembly - Google Patents

Abstract

The crank gear assembly of the present invention is used for engaging a belt and assembling a pedal. It includes a roulette portion, a crank portion and a coupling portion; the roulette portion, the crank portion and the coupling portion are integrally formed Structure, the roulette portion has a first side surface and a second side surface, the first side surface is opposite to the second side surface, and a plurality of belt tooth grooves are formed on the outer periphery of the roulette portion so as to mesh with the belt; the crank The portion is formed on one side of the roulette portion, one end of which is connected to the first side surface of the roulette portion, and the other end extends toward the radial direction of the roulette portion. The crank portion has a pedal hole for assembling The pedal; the coupling portion is formed on the second side of the wheel portion.

Description

Crank ring assembly and drive mechanism applied to the same

The invention relates to the technical field of bicycle transmission structures, in particular to a crank gear plate assembly matched with a belt transmission.

In the transmission mode of bicycles, it is generally divided into two types: chain drive and pulley drive. The traditional way of using a chain with a sprocket is that the chain is easy to fall off, and the chain must be frequently oiled. It has the advantages of not being easy to break off the chain, not needing to be oiled frequently, not slipping at high speed, and high efficiency; however, the conventional toothed disc structure used for pulley transmission consists of a toothed disc and a crank, wherein one end of the crank is used to assemble a The other end of the pedal is pivotally connected to a five-claw connecting piece, and then the five-claw connecting piece is used to cooperate with a plurality of locking elements to assemble the chainring. , Through the structure of the crank, the five-claw connecting piece, and the plurality of locking elements to connect the chainring, it is easy to cause unstable transmission and untimely transmission.

The present invention provides a crank gear plate assembly, the purpose of which is to provide an integrated structure of the crank and the gear plate, which has better structural strength and transmission effect.

In order to achieve the aforementioned purpose, the present invention provides a crank gear plate assembly for engaging a belt and assembling a pedal, which comprises a wheel plate portion, a crank portion and a coupling portion; the wheel plate portion, the crank portion and the A structure in which the coupling part is integrally formed, the disc part has a first side surface and a second side surface, the first side surface is opposite to the second side surface, and a plurality of belt tooth grooves are formed on the outer periphery of the disc part to match the The belts are engaged; the crank part is formed on one side of the wheel part, one end of which is connected to the first side surface of the wheel part, and the other end extends radially of the wheel part, and the crank part has a The pedal hole is used for assembling the pedal; the coupling portion is formed on the second side surface of the wheel portion.

In one embodiment, the plurality of belt tooth grooves include a plurality of first convex portions, a plurality of second convex portions and a plurality of concave portions, and the plurality of first convex portions and the plurality of second convex portions are arranged in two adjacent concave portions at intervals. the two sides.

In one embodiment, there is a reinforcing sheet, the reinforcing sheet has a through hole, the reinforcing sheet is included in the interior of the combination of the wheel portion and the crank portion, and the through hole corresponds to the pedal of the crank portion hole.

In one embodiment, the reinforcing sheet is provided with a hollow portion, so that the reinforcing sheet is contained in the interior of the combination of the wheel portion and the crank portion, and can have a better relationship with the wheel portion and the crank portion. combination.

A driving mechanism, comprising: a crank gear plate assembly for engaging a belt and assembling a pedal, which comprises a wheel plate part, a crank part and a coupling part; the wheel plate part, the crank part and the coupling shaft A structure in which the part is integrally formed, the wheel part has a first side and a second side, the first side is opposite to the second side, a central hole is set in the center of the wheel, and the center hole penetrates the The first side surface and the second side surface, a plurality of belt tooth grooves are formed on the outer periphery of the wheel portion so as to be in line with the The belts are engaged; the crank part is formed on one side of the wheel part, one end of which is connected to the first side surface of the wheel part, and the other end extends radially of the wheel part, and a pedal is provided on the crank part a hole for assembling the pedal; the coupling portion is formed on one side of the wheel portion, the coupling portion has a first end and a second end, the first end is connected to the central hole of the wheel portion, The second end extends in the axial direction of the central hole and protrudes out of the second side surface. The end surface of the second end is provided with a plurality of ratchet teeth. A mounting hole penetrates through the first end and the second end and is connected with the second end. The central hole of the disc part communicates with the central hole; an auxiliary crank assembly includes an auxiliary crank part and an auxiliary shaft part, and the auxiliary crank part and the auxiliary shaft part are integrally formed; one end of the auxiliary crank part has a The auxiliary pedal hole is used for assembling another pedal, and the other end of the auxiliary crank part has a center hole; the auxiliary coupling part is formed on one side of the auxiliary crank part, and has a first end and a second end, The first end is connected to the central hole of the auxiliary crank portion, the second end extends in the axial direction of the central hole, and the end face of the second end is provided with a plurality of ratchet teeth for matching with the plurality of ratchet teeth of the coupling portion meshing, a pair of mounting holes penetrates through the first end and the second end and communicates with the central hole of the auxiliary crank part; The installation hole of the coupling part, the central hole of the auxiliary coupling part of the auxiliary crank assembly, and the auxiliary installation hole of the auxiliary coupling part are used for assembling the crank ring assembly and the auxiliary crank assembly.

In an embodiment, the auxiliary crank assembly further has an adjustment piece, the adjustment piece has a first end and a second end, the first end is opposite to the second end, and the first end and the second end The end faces of the ends are respectively provided with a plurality of ratchet teeth, which can be respectively engaged with the plurality of ratchet teeth of the coupling part and the plurality of ratchet teeth of the auxiliary coupling part, and the center of the adjusting member has a combination hole, and the combination hole penetrates the first One end and the second end are used for the pivoting assembly to pass through the pivot.

In one embodiment, wherein the pivot assembly is a combination of a shaft and a sleeve, the shaft is provided with a section of external thread, the inner core of the sleeve is provided with an internal thread, the shaft and the sleeve are respectively Passing through the crank ring assembly and the auxiliary crank assembly, the shaft rod can be screwed with the sleeve to lock the crank ring assembly and the auxiliary crank assembly.

In an embodiment, wherein the crank ring assembly further has a reinforcing sheet, the reinforcing sheet has a shaft hole and a through hole, the reinforcing sheet is contained in the interior of the combination of the wheel portion and the crank portion, the shaft is The hole corresponds to the center hole of the wheel disc portion, and the through hole corresponds to the pedal hole of the crank portion; the auxiliary crank assembly further has a pair of reinforcing pieces, and the auxiliary reinforcing piece has a pair of shaft holes and a pair of through holes. The auxiliary shaft hole corresponds to the central hole of the auxiliary crank part, the auxiliary through hole corresponds to the auxiliary pedal hole of the auxiliary crank part, and the auxiliary reinforcing sheet is contained in the auxiliary crank part.

In one embodiment, the reinforcing sheet and the auxiliary reinforcing sheet are both provided with a hollow portion, so that the reinforcing sheet is contained in the interior of the combination of the wheel portion and the crank portion, and can communicate with the wheel portion, The crank part is preferably combined, and the auxiliary reinforcing sheet is contained in the auxiliary crank part and can be combined with the auxiliary crank part.

Hereinafter, according to the purpose and effect of the present invention, preferred embodiments are given and described in detail with the drawings.

10: Roulette Department

11: The first side

12: Second side

13: Center hole

14: Belt tooth slot

141: The first convex part

142: Second convex part

143: Recess

20: Crank part

21: Pedal hole

30: Coupling part

31: First End

32: Second End

33: Mounting holes

34: Ratchet

40: Reinforcing tablets

41: Shaft hole

42: Through hole

43: Flange

44: Ventilation part

50: Sub crank part

51: Vice pedal hole

52: Center hole

60: Auxiliary Coupling

61: First End

62: Second End

63: Vice mounting hole

64: Ratchet

70: Sub-reinforcing tablets

71: Countershaft hole

72: Secondary through hole

73: Fence

74: Ventilation part

80: Adjustment piece

81: First End

82: Second End

83, 84: Ratchet

85: binding hole

90: Pivot assembly

91: Shaft

92: External thread

93: Casing

94: Internal thread

200: Belt

300: Pedal

FIG. 1 is a schematic three-dimensional appearance diagram of the crank ring assembly of the present invention.

FIG. 2 is a schematic three-dimensional appearance diagram of the reinforcing piece of the crank ring assembly of the present invention.

FIG. 3 is a schematic cross-sectional view of the crank ring assembly of the present invention.

FIG. 4 is a schematic view of the three-dimensional combined appearance of the drive mechanism of the present invention.

FIG. 5 is an exploded schematic view of the three-dimensional appearance of the drive mechanism of the present invention.

FIG. 6 is a schematic cross-sectional view of the combination of the driving mechanism of the present invention.

FIG. 7 is a schematic diagram of the driving mechanism of the present invention and its use state.

Please refer to FIG. 1 , a crank gear assembly of the present invention is used for engaging a belt 200 and assembling a pedal 300 (please refer to FIG. 7 for cooperation), which includes a wheel portion 10 , a crank portion 20 and a The combination of the coupling parts 30 . The wheel portion 10 has a first side 11 and a second side 12. The first side 11 is opposite to the second side 12. A central hole 13 is provided in the center of the wheel portion 10, and the central hole 13 penetrates The first side surface 11 and the second side surface 12, a plurality of belt tooth grooves 14 are formed on the outer periphery of the pulley portion 10 to be engaged with the belt 200; in the embodiment of this specification, the plurality of belt tooth grooves 14 include a plurality of first A convex portion 141 , a plurality of second convex portions 142 and a plurality of concave portions 143 , the plurality of first convex portions 141 and the plurality of second convex portions 142 are disposed on both sides of the adjacent two concave portions 143 at intervals to provide auxiliary limiting of the The belt 200 prevents the belt 200 from detaching from the wheel portion 10; the crank portion 20 is formed on one side of the wheel portion 10, one end of which is connected to the first side surface 11 of the wheel portion 10, and the other end faces the wheel portion The crank part 20 has a pedal hole 21 for assembling the pedal 300 ; the coupling part 30 is formed on one side of the wheel part 10 .

Please refer to FIG. 2 , the wheel disc portion 10 , the coupling portion 30 and the crank portion 20 of the crank ring assembly of the present invention are integrally formed, and for the purpose of reducing the weight of the bicycle, resin, It is made of non-metallic materials such as carbon fiber reinforced plastic, and further includes a reinforcing sheet 40. The reinforcing sheet 40 has a shaft hole 41 and a through hole 42. The reinforcing sheet 40 is included in the wheel portion 10 and the crank. Between the parts 20 (as shown in FIG. 3 ), the shaft hole 41 corresponds to the central hole 13 of the wheel disc part 10 , and the through hole 42 corresponds to the pedal hole 21 of the crank part 20 . The reinforcing sheet 40 can increase the structural strength of the wheel portion 10 and the crank portion 20 ; the reinforcing sheet 40 further includes a baffle 43 , the baffle 43 is formed on the outer periphery of the shaft hole 41 , the baffle 43 provides structural reinforcement to the central hole 13, so that the structure of the central hole 13 is more firm, so as to facilitate the passage of the pivot (or locking) element to connect other components; in addition, the reinforcing sheet 40 is provided with There is a hollow portion 44 , so that the reinforcing sheet 40 is contained in the combination of the wheel portion 10 and the crank portion 20 , and can be better combined with the wheel portion 10 and the crank portion 20 .

Please refer to FIGS. 4 and 5 , a driving mechanism is the combination of the crank ring assembly of the present invention, a pair of crank assemblies, and a through-pivot assembly 90 .

Wherein, the coupling portion 30 of the crank ring assembly has a first end 31 and a second end 32, the first end 31 is connected to the central hole 13 of the wheel portion 10, and the second end 32 is connected to The center hole 13 extends axially and protrudes out of the second side surface 12 , a mounting hole 33 penetrates the first end 31 and the second end 32 and communicates with the center hole 13 of the wheel portion 10 , The end surface of the second end 32 is provided with a plurality of ratchet teeth 34 .

The auxiliary crank assembly includes an auxiliary crank portion 50, an auxiliary shaft portion 60 and an auxiliary reinforcing sheet 70. One end of the auxiliary crank portion 50 has an auxiliary pedal hole 51 for assembling another pedal 300. The auxiliary crank portion The other end of 50 has a central hole 52; the auxiliary coupling part 60 is formed on one side of the auxiliary crank part 50, and has a first end 61 and a second end 62, the first end 61 is connected to the auxiliary crank part The central hole 52 of 50, the second end 62 extends toward the axial direction of the central hole 52, the auxiliary coupling portion 60 has a secondary mounting hole 63, the secondary mounting hole 63 penetrates the first end 61 and the second The end 62 is communicated with the central hole 52 of the auxiliary crank portion 50 , and a plurality of ratchet teeth 64 are arranged on the end surface of the second end 62 for engaging with the plurality of ratchet teeth 34 of the coupling portion 30 Assembled; the auxiliary crank part 50 and the auxiliary coupling part 60 are integrally formed structures, which can also be made of non-metallic materials such as resin and carbon fiber reinforced plastic for the purpose of reducing the weight of the bicycle; the auxiliary reinforcing sheet 70 A secondary shaft hole 71 and a secondary through hole 72 are provided, and a baffle 73 is further provided on the outer periphery of the secondary shaft hole 71 . The secondary shaft hole 71 and the secondary through hole 72 correspond to the center of the secondary crank portion 50 respectively. The hole 52 and the auxiliary pedal hole 51, the auxiliary reinforcing sheet 70 is included in the auxiliary crank part 50, the auxiliary reinforcing piece 70 can increase the structural strength of the whole auxiliary crank part 50 and the central hole 13; The reinforcing sheet 70 is provided with a hollow portion 74 , so that the secondary reinforcing sheet 70 is contained in the secondary crank portion 50 and can be better combined with the secondary crank portion 50 . The structure of the aforementioned auxiliary reinforcing sheet 70 is the same as that of the reinforcing sheet 40 , and is not shown in other figures.

Please refer to FIGS. 6 and 7 , there is an adjusting member 80 between the coupling portion 30 and the auxiliary coupling portion 60 . The adjusting member 80 has a first end 81 and a second end 82 . The end 81 is opposite to the second end 82, and a plurality of ratchet teeth 83 and 84 are respectively provided on the end faces of the first end 81 and the second end 82, which can be respectively connected with the plurality of ratchet teeth 34 and the pair of the ratchet teeth 34 of the coupling portion 30. The plurality of ratchet teeth 64 of the coupling portion 60 are engaged with each other. The adjusting member 80 has a coupling hole 85 in the center. The coupling hole 85 penetrates the first end 31 and the second end 32. The pivot assembly 90 passes through the pivot. The length of the coupling portion 30 of the crank ring assembly and the sub coupling portion 60 of the sub-crank assembly can be changed through the adjusting member 80, so as to adapt to the five-way pipes of different specifications of the bicycle frame. All drive mechanisms are applicable.

The pivot assembly 90 is a combination of a shaft 91 and a sleeve 93, the shaft 91 is provided with a section of external thread 92, the inner tube of the sleeve 93 is provided with an internal thread 94, the shaft 91 passes through the crank The central hole 13 of the wheel portion 10 of the chainring assembly, the mounting hole 33 of the coupling portion 30, the coupling hole 85 of the adjusting member 80 and the secondary mounting hole 63 of the secondary coupling portion 60 of the secondary crank assembly , and the sleeve 93 passes through the central hole 52 of the auxiliary crank part 50 of the auxiliary crank assembly, the auxiliary installation hole 63 of the auxiliary coupling part 60, and the shaft 91 The external thread 92 is screwed with the internal thread 94 of the sleeve 93, so as to lock the crank ring assembly and the auxiliary crank assembly.

With the above-mentioned crank ring assembly of the present invention, due to the structure that the wheel portion 10 , the coupling portion 30 and the crank portion 20 are integrally formed, and between the wheel portion 10 and the crank portion 20 The reinforcing sheet 40 is provided, so that the crank chainring assembly of the present invention has good structural strength. And, the auxiliary crank part 50 and the auxiliary shaft part 60 of the auxiliary crank assembly are also integrally formed with the structure of the auxiliary reinforcing sheet 70. The auxiliary crank assembly also has good structural strength, and with the crank The drive mechanism of the present invention composed of a chainring assembly and the auxiliary crank assembly, the plurality of belt tooth grooves 14 of the pulley portion 10 are engaged with the belt 200 , the crank portion 20 and the auxiliary crank portion 50 are respectively assembled with the pedal 300 , when the user steps on the pedal 300 to exert force, the force can be completely and timely converted into the power to make the bicycle move forward, the driving mechanism of the present invention provides a better transmission effect, and completely eliminates the conventional method of connecting five claws with a crank. The connecting piece and the five-claw connecting piece are connected to the toothed plate by means of a plurality of locking elements, resulting in the disadvantages of unstable transmission and untimely transmission.

The above-mentioned embodiments are only used to illustrate the technology of the present invention and its effect, and are not intended to limit the present invention. Anyone skilled in the art can modify and change the above embodiments without violating the technical principle and spirit of the present invention. Therefore, the scope of protection of the present invention should be listed in the scope of the patent application described later. .

10: Roulette Department

11: The first side

12: Second side

13: Center hole

14: Belt tooth slot

141: The first convex part

142: Second convex part

143: Recess

20: Crank part

21: Pedal hole

30: Coupling part

Claims (8)

A crank gear plate assembly is used for engaging a belt and assembling a pedal, which comprises a wheel portion, a crank portion and a coupling portion; wherein: the wheel portion, the crank portion and the coupling portion are integrally formed In the structure, the wheel portion has a first side and a second side, the first side is opposite to the second side, a plurality of belt tooth grooves are formed on the outer periphery of the wheel portion to engage with the belt, the The plurality of belt tooth grooves comprise a plurality of first convex parts, a plurality of second convex parts and a plurality of concave parts, and the plurality of first convex parts and the plurality of second convex parts are arranged on both sides of the adjacent two adjacent concave parts; the crank part is formed On one side of the wheel portion, one end is connected to the first side surface of the wheel portion, and the other end extends radially of the wheel portion. The crank portion has a pedal hole for assembling the pedal ; The coupling portion is formed on the second side surface of the wheel portion. A crank gear plate assembly is used for engaging a belt and assembling a pedal, which comprises a wheel portion, a crank portion and a coupling portion; wherein: the wheel portion, the crank portion and the coupling portion are integrally formed In the structure, the wheel portion has a first side and a second side, the first side is opposite to the second side, and a plurality of belt tooth grooves are formed on the outer periphery of the wheel portion to engage with the belt; the The crank portion is formed on one side of the wheel portion, one end of which is connected to the first side surface of the wheel portion, and the other end extends radially of the wheel portion. The crank portion has a pedal hole for assembling The pedal is connected to the pedal; the coupling part is formed on the second side surface of the wheel part; The hole corresponds to the pedal hole of the crank portion. The crank chainring assembly as claimed in claim 2, wherein the reinforcing sheet is provided with a hollow portion, so that the reinforcing sheet is contained in the interior of the combination of the wheel portion and the crank portion, and can communicate with the wheel portion, The crank part has a better joint. A driving mechanism, comprising: a crank gear plate assembly for engaging a belt and assembling a pedal, which comprises a wheel plate part, a crank part and a coupling part; the wheel plate part, the crank part and the coupling shaft A structure in which the part is integrally formed, the wheel part has a first side and a second side, the first side is opposite to the second side, a central hole is set in the center of the wheel, and the center hole penetrates the The first side and the second side, a plurality of belt tooth grooves are formed on the outer periphery of the wheel portion to engage with the belt; the crank portion is formed on one side of the wheel portion, and one end of the crank portion is connected to the wheel portion. The first side surface and the other end extend toward the radial direction of the wheel portion. The crank portion has a pedal hole for assembling the pedal. The coupling portion is formed on one side of the wheel portion. The portion has a first end and a second end, the first end is connected to the central hole of the wheel portion, the second end is extended to the axial direction of the central hole and protrudes out of the second side surface, the The end face of the second end is provided with a plurality of ratchet teeth, and a mounting hole penetrates the first end and the second end and communicates with the center hole of the wheel disc portion; a pair of crank components includes a pair of crank parts and a pair of coupling shafts The auxiliary crank part and the auxiliary shaft part are integrally formed; one end of the auxiliary crank part has an auxiliary pedal hole for assembling another pedal, and the other end of the auxiliary crank part has a center hole; The coupling part is formed on one side of the auxiliary crank part, and has a first end and a second end, the first end is connected to the center hole of the auxiliary crank part, and the second end is directed to the axial direction of the center hole Extending, the end face of the second end is provided with a plurality of ratchet teeth for cooperating with the The plurality of ratchet teeth of the coupling part are engaged with each other, and a pair of installation holes pass through the first end and the second end and communicate with the central hole of the auxiliary crank part; The central hole of the wheel disc portion, the mounting hole of the coupling portion, the central hole of the secondary coupling portion of the secondary crank assembly, and the secondary mounting hole of the secondary coupling portion are used to assemble the crank ring assembly with The secondary crank assembly. The driving mechanism as claimed in claim 4, wherein the auxiliary crank assembly further has an adjustment piece, the adjustment piece has a first end and a second end, the first end is opposite to the second end and is at the first end The end face of the second end is respectively provided with a plurality of ratchet teeth, which can be respectively engaged with the plurality of ratchet teeth of the coupling part and the plurality of ratchet teeth of the auxiliary coupling part. A hole penetrates through the first end and the second end for the pivoting assembly to pass through. The driving mechanism as claimed in claim 4, wherein the pivot assembly is a combination of a shaft rod and a sleeve, the shaft is provided with an external thread, the pipe core of the sleeve is provided with an internal thread, and the shaft is connected with the sleeve. The sleeve passes through the crank chain assembly and the auxiliary crank assembly respectively, and the shaft rod can be screwed with the sleeve to lock the crank chain assembly and the auxiliary crank assembly. The drive mechanism according to claim 4, wherein the crank ring assembly further has a reinforcing sheet, the reinforcing sheet has a shaft hole and a through hole, and the reinforcing sheet is included in the combination of the wheel portion and the crank portion. Inside, the shaft hole corresponds to the central hole of the wheel disc portion, the through hole corresponds to the pedal hole of the crank portion; the auxiliary crank assembly further has a pair of reinforcing sheets, and the auxiliary reinforcing sheet has a secondary shaft hole and a pair of a through hole, the auxiliary shaft hole corresponds to the central hole of the auxiliary crank part, the auxiliary through hole corresponds to the auxiliary pedal hole of the auxiliary crank part, and the auxiliary reinforcing sheet is contained in the auxiliary crank part. The driving mechanism as claimed in claim 7, wherein the reinforcing sheet and the auxiliary reinforcing sheet are both provided with a hollow portion, so that the reinforcing sheet is contained in the interior of the combination of the wheel portion and the crank portion, and can communicate with the The roulette part and the crank part are preferably combined, and the auxiliary reinforcing sheet is contained in the auxiliary crank part and can be combined with the auxiliary crank part.

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