RU2497708C2 - Bicycle drive with offset crank slider mechanism - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to drives of bicycles with foot pedals reciprocation. Proposed drive comprises drive sprocket, chain gearing with crank, drive sprocket , slider (pedal) with guide and con-rod. In straight stroke of slider-pedal crank turn angle exceeding 180 degrees. In reciprocation and at whatever opposite positions of pedals-sliders of depression of one of them drives the bicycle while zone of transition from one slider-pedal to another makes the zone of their combined operation.

EFFECT: expanded operating performances.

3 dwg

Description

The invention relates to bicycles, namely, bicycle drives with reciprocating foot pedals.

The diversity of the destination of bicycles determines the diversity of their designs [1].

As analogues, one can imagine the designs of drives proposed by patents [6, 7, 8, 9, 10, 11]. The disadvantage of this technical solution is the complex and expensive drive mechanisms offered by patents [6, 7, 8]. Patent RU 2267672 C2 proposes the calculation of the parameters of a deaxial crank-slide mechanism, within which positive properties previously unknown to it have been identified. The result is an increase in the effectiveness of the mechanism in all areas of its application. US patent 6173981 B1 offers a pedal mechanism for a cart with levers, rods, three chain gears and two couplings, and allows the cart to be moved by pressing one or two pedals. Such a mechanism is complex, expensive, voluminous, not efficiently used for a bicycle. Patent SU 1747775 A1 proposes methods for balancing the moments of inertia of a deaxial crank-slide mechanism, and does not offer to use it to drive a bicycle.

The closest in technical essence, or prototype, is a scooter drive [12]. The drive with a rocker mechanism is simple to execute, therefore not expensive, provides approximately (in radius) the reciprocating movement of the pedals of the mechanism, and in the transition zone of changing the pedals, pressing the two pedals set the bike in motion

The objective of the invention is to preserve all the advantages of the prototype, such as ease of execution, low cost, the ability to ensure the movement of the bike only by pressing the pedals, and in the transition zone of changing the pedal, pressing the two pedals should set the bike in motion, in addition to ensure EXACTLY reciprocating movement of the pedals, which will increase the capabilities of the cyclist, but does not offer any of the patents [6, 7, 8, 9, 10, 11, 12,].

The specified technical result is achieved by the fact that the claimed bicycle drive has a de-axial crank-slide mechanism, where in the forward stroke the angle of rotation of the crank is more than 180 degrees, which is used for the pedal stroke. Consequently, the two opposing pedals on the sliders during the reciprocating movement will have a zone of joint action during the working stroke. The pedals move along the guides, providing precise reciprocating motion.

A comparable analysis with the prototype allows us to conclude that the claimed BIKE DRIVER WITH A DEAXIAL CRANKSHAFT-SLIDING MECHANISM will be more efficient than the prototype drive. The author is not aware of such a design of a bicycle drive having a deaxial crank-slide mechanism in its design. Therefore, the claimed solution meets the criterion of "novelty."

Comparison of the proposed solutions with the prototype allowed us to identify signs that distinguish the claimed solution from the prototype, which allows us to conclude that the criterion of "Inventive step".

The essence of the technical solution is confirmed by the drawings (figure 2, figure 3). Figure 2 shows one of the design options for a bicycle with a chain drive and a disaxial crank-slide mechanism of the drive, where the drive sprocket 7 of the chain drive with the crank 8, the driven sprocket 9 of the chain drive, connecting rod 11, the slider pedal 12, the guide slider pedal 10 The inventive drive of the bicycle has a deaxial crank-slide mechanism, in which, when the slider pedal is forward, the crank angle of rotation is more than 180 degrees [4, pp. 195-199]. Figure 3 presents one embodiment of a bicycle without a chain drive with a deaxial crank-slide mechanism of the drive, where the crank 13, the connecting rod 14, the slider-pedal 15, the guide slider-pedal 16. The inventive bike drive has a de-axial crank-slide mechanism, which, in the forward stroke of the slider pedal, the crank angle of rotation of more than 180 degrees.

Therefore, with the reciprocating movement and in any position of the opposing pedal sliders, pressing one of them sets the bike in motion, and the zone of transition from one slide pedal to another is the zone of their joint action.

To understand the essence of the technical solution proposed by the author, I will give a detailed description of the deaxial crank-slide mechanism and the claimed bicycle with it (Fig. 1, Fig. 2, Fig. 3). Figure 1 shows the deaxial crank-slide mechanism [4, pp. 195-199] with an eccentricity 6, where the slider 1 is in the top dead center position, and the slider 2 is in the bottom dead center position, the connecting rod 4, crank 5. With a forward stroke the crank angle is greater than 180 degrees by an angle of 3, and the opposite angle by the same angle is less. The value of the angle 3 depends on the ratio of the lengths of the radius of the crank, connecting rod and eccentricity. Each of the two opposing bicycle sliders-pedals has its own deaxial crank-slide mechanism. Consequently, with exact reciprocating movement, the two opposing sliders-pedals have a joint coverage area equal to angle 3, where pressing the two sliders-pedals sets the bike in motion if the forward stroke of the crank-slide mechanism is used for movement and the reverse to return the slide- bicycle pedals. Figure 2 shows one of the design options for a bicycle with a chain drive and a disaxial crank-slide mechanism of the drive, where the drive sprocket 7 of the chain drive with the crank 8, the driven sprocket 9 of the chain drive, connecting rod 11, the slider pedal 12, the guide slider pedal 10 The inventive bicycle drive has a de-axial crank-slide mechanism, in which the crank angle of rotation of the crank is more than 180 degrees with a direct stroke of the pedal. Figure 3 presents one embodiment of a bicycle without a chain drive with a deaxial crank-slide mechanism of the drive, where the crank 13, the connecting rod 14, the slider-pedal 15, the guide slider-pedal 16. The inventive bike drive has a de-axial crank-slide mechanism, which, in the forward stroke of the slider pedal, the crank angle of rotation of more than 180 degrees.

Therefore, with the exact reciprocating movement and any position of the opposing pedal sliders, pressing one of them sets the bike in motion, and the zone of transition from one slide pedal to another is the zone of their joint action.

A BIKE DRIVE WITH A DEAXIAL CRANKSHAFT-SLIDER MECHANISM can be used in conjunction with the classic bicycle design [1] and with bicycle designs proposed by patents [2, 3, 4, 5]. The inventive drive of the bike can be used in the construction of other vehicles driven by human muscular strength and simulators. The inventive bicycle drive is simpler, more reliable, cheaper than the drives offered by analogues [6, 7, 8, 10]. DRIVE BICYCLE WITH A DEXAXY CRANKSHAFT-SLIDER MECHANISM more efficient than a prototype bicycle drive, increases the possibilities of a cyclist, makes the bicycle more attractive for consumers, which will make the production of bicycles with it cost-effective.

Literature

1. Big Russian Encyclopedia M .: Scientific Publishing House Big Russian Encyclopedia. T.5. 2006.782. p. 65-66.

2. Skarzhinsky A.I. IPC V62M 3/00 V62M 3/08 V62K 13/06 V62K 27/12 V62K 15/00 V60V 1/10 RU 2373101 C2. A bicycle (options), a bicycle wheel, a bicycle drive, a bicycle linkage, a bicycle pedal, and a kit comprising a bicycle and a trailer.

3. Leonov A.G. IPC B62K 17/00 RU 83233 U1 Bicycle.

4. Prokhorov VV IPC B62K 7/00 RU 17509 U1. Multi-seat reconfigurable modular collapsible bike and a device for converting a single bike into a multi-seat.

5. Pyzhik Yu.N. IPC F16H 55/30 RU 6210 U1 Bicycle drive.

6. Hasanov P.M. IPC V62M 1/04 RU 6178 U1. Bicycle drive with reciprocating pedals.

7. Shlygin V.V. IPC А63В 23/04 RU 99719 U1. Exercise bike or bicycle drive.

8. Shlygin V.V. IPC А63В 23/04 RU 60374 U1. Exercise bike or bicycle drive.

9. M.O. Yarimov. Patent RU 2267672 C2 dated January 10, 2006.

10. Patent US 6173981 B1 dated January 16, 2001.

11. V.I. Doronin et al. Patent SU 1747775 A1 from. 12/29/1992

12. KR patent 200446184 Y1 dated 10.23.2009.

Claims (1)

A bicycle drive with a deaxial crank-slide mechanism, characterized in that the use of a de-axial crank-slide mechanism ensures precisely reciprocating movement of the opposing slide-pedals and, in any position, pressing one of them sets the bike in motion, and the transition area from one slider pedal to another is a zone of their joint action.

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