CN210191736U - Novel crank - Google Patents

Abstract

The utility model relates to the technical field of bicycle accessories, in particular to a novel crank which has simple structure, reasonable design, practical significance and popularization value and is expected to produce good economic benefit and comprises an upper crank, a lower crank, a transmission gear and a power generation device; the upper crank is provided with a cavity and a lamp hole, and a light emitting diode is arranged in the lamp hole; the lower crank comprises a lower crank A and a lower crank B, the lower crank A is movably arranged in the cavity, the top end of the lower crank A is provided with a fixture block, the fixture block is connected with the rack, the bottom end of the lower crank A penetrates through the annular fixture block to be connected with the top end of the lower crank B arranged outside the cavity, the lower crank A is sleeved with a spring between the fixture block and the annular fixture block, and the bottom of the lower crank B is provided with a connecting hole; the transmission gear is rotationally fixed in the cavity, the transmission gear is meshed with the rack, and the transmission gear is coaxially provided with a conical gear A; the power generation device is arranged in the inner cavity and electrically connected with the light emitting diode.

Description

Novel crank

Technical Field

The utility model relates to a bicycle accessory technical field specifically is a novel crank.

Background

The bicycle is a sport which is popular with people, and not only can keep the figure uniform, but also can reduce the risk of the cardiovascular and cerebrovascular diseases of the human body. Some people prefer to ride a bicycle at night, and since the bicycle is not provided with a lamp, the bicycle is difficult to be found by a vehicle at a distance at night, so that accidents are very easy to happen, and equipment is needed to solve the problem.

The crank is a common bicycle accessory for connect axis and footboard, its simple structure, it is comparatively hard that the rider used, how to reform transform current crank, makes it have laborsaving and remind the function of vehicle in a distance at night to be the problem that we will solve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel crank to solve the problem that mentions in the background art.

In order to achieve the aim, the utility model provides the following technical proposal that the device comprises an upper crank, a lower crank, a transmission gear and a power generation device; the top of the upper crank is provided with a fixing hole, the upper crank is provided with a cavity with an opening positioned at the bottom end of the upper crank, two sides of the upper crank are respectively provided with a lamp hole communicated with the cavity, each lamp hole is internally provided with a light-emitting diode, and an annular clamping block is arranged at the opening of the cavity; the lower crank comprises an A lower crank and a B lower crank, the A lower crank is movably arranged in the cavity, a clamping block is arranged at the top end of the A lower crank and is connected with the rack, the bottom end of the A lower crank penetrates through the annular clamping block and is connected with the top end of the B lower crank arranged outside the cavity, a spring is sleeved between the clamping block and the annular clamping block of the A lower crank, and a connecting hole is formed in the bottom of the B lower crank; the transmission gear is rotatably fixed in the cavity and meshed with the rack, and a conical gear A is coaxially arranged on the transmission gear; the power generation facility includes rotor, magnetic induction shell and transformer, the magnetic induction shell is fixed in the cavity top, the rotor is located in the magnetic induction shell, the rotor bottom is equipped with conical gear B, conical gear B with conical gear A meshes, the transformer with the magnetic induction shell electricity is connected, the transformer is with 2 the emitting diode electricity is connected.

Preferably, the fixture block is matched with the cavity.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

the utility model discloses the theory of operation: when the novel crank provided by the utility model is used, the fixing hole is connected with the middle shaft of the bicycle, the connecting hole is connected with the pedal, when the pedal is pedaled downwards, the crank A moves outwards, the spring is compressed at the moment, the length of the crank is lengthened, so that the torque is increased, the labor-saving effect can be achieved, when the pedal is lifted, the spring returns to the original shape, and the crank returns to the original length, so that the torque is shortened, and the effect of saving the distance is achieved; in the process of pedaling in a reciprocating manner, the position of the crank A is continuously changed in a reciprocating manner, so that the rack is continuously reciprocated, the rack drives the transmission gear meshed with the rack to rotate, the transmission gear is coaxially and concentrically provided with the conical gear A, the conical gear A is meshed with the conical gear B at the bottom end of the rotor, the rack drives the rotor to rotate, the rotor cuts the magnetic induction shell to generate induction current, and the current is transmitted to the light emitting diode through the transformer, so that the light emitting diode emits light to play a warning effect.

The utility model discloses simple structure has practical meaning and spreading value, possesses laborsaving and warning function, can prevent that the bicycle from being hit the emergence of accident at night, expects to produce good economic benefits.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

in the figure: the device comprises an upper crank 1, a fixing hole 11, a cavity 12, an annular fixture block 121, a lamp hole 13, a light emitting diode 131, a lower crank 2, an A lower crank 21, a fixture block 211, a rack 2111, a spring 212, a B lower crank 22, a connecting hole 221, a transmission gear 3, a bevel gear A31, a rotor 41, a bevel gear B411, a magnetic induction shell 42 and a transformer 43.

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.

Examples

With reference to fig. 1-2, a novel crank comprises an upper crank 1, a lower crank 2, a transmission gear 3 and a power generation device 4; the top of the upper crank 1 is provided with a fixing hole 11, the upper crank 1 is provided with a cavity 12 with an opening positioned at the bottom end of the upper crank 1, two sides of the upper crank 1 are respectively provided with a lamp hole 13 communicated with the cavity 12, each lamp hole 13 is internally provided with a light emitting diode 131, and the opening of the cavity 12 is provided with an annular clamping block 121; the lower crank 2 comprises a lower crank 21A and a lower crank 22B, the lower crank 21A is movably arranged in the cavity 12, a clamping block 211 is arranged at the top end of the lower crank 21A, the clamping block 211 is matched with the cavity 12, the clamping block 211 is connected with a rack 2111, the bottom end of the lower crank 21A penetrates through the annular clamping block 121 to be connected with the top end of the lower crank 22B arranged outside the cavity 12, a spring 212 is sleeved between the clamping block 211 and the annular clamping block 121 of the lower crank 21A, and a connecting hole 221 is formed in the bottom of the lower crank 22B; the transmission gear 3 is rotatably fixed in the cavity 12, the transmission gear 3 is meshed with the rack 2111, and the transmission gear 3 is coaxially provided with a conical gear A31; power generation facility 4 includes rotor 41, magnetism induction housing 42 and transformer 43, magnetism induction housing 42 is fixed in cavity 12 top, rotor 41 is located in the magnetism induction housing 42, rotor 41 bottom is equipped with conical gear B411, conical gear B411 with conical gear A31 meshing, transformer 43 with magnetism induction housing 42 electricity is connected, transformer 43 and 2 emitting diode 131 electricity is connected.

The utility model discloses the theory of operation: when the bicycle pedal is used, the fixing hole 11 is connected with a bicycle center shaft, the connecting hole 221 is connected with a pedal, when the pedal is pedaled downwards, the lower crank 21A moves outwards, the spring 212 is compressed at the moment, the length of the crank is lengthened, so that the moment is increased, the labor-saving effect can be achieved, when the pedal is lifted, the spring 212 returns to the original shape, the crank returns to the original length, the moment is shortened, and the distance-saving effect is achieved; in the process of pedaling in a reciprocating manner, the position of the crank 21 under the pedal a is changed continuously in a reciprocating manner, so that the rack 2111 is changed continuously in a reciprocating manner, the rack 2111 drives the transmission gear 3 meshed with the rack to rotate, the transmission gear 3 is coaxially and concentrically provided with the conical gear a31, and the conical gear a31 is meshed with the conical gear B411 at the bottom end of the rotor 41, so that the rotor 41 is driven by the rack 2111 to rotate, the rotor 41 cuts the magnetic induction shell 42 to generate induction current, and the current is transmitted to the light emitting diode 131 through the transformer 43, so that the light emitting diode 131 emits light to play the effects.

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 (2)

1. A novel crank, comprising:

the device comprises an upper crank (1), wherein a fixing hole (11) is formed in the top of the upper crank (1), the upper crank (1) is provided with a cavity (12) with an opening located at the bottom end of the upper crank (1), two sides of the upper crank (1) are respectively provided with a lamp hole (13) communicated with the cavity (12), each lamp hole (13) is internally provided with a light emitting diode (131), and an annular clamping block (121) is arranged at the opening of the cavity (12);

the lower crank (2) comprises an A lower crank (21) and a B lower crank (22), the A lower crank (21) is movably arranged in the cavity (12), a clamping block (211) is arranged at the top end of the A lower crank (21), the clamping block (211) is connected with a rack (2111), the bottom end of the A lower crank (21) penetrates through the annular clamping block (121) to be connected with the top end of the B lower crank (22) arranged outside the cavity (12), a spring (212) is sleeved between the clamping block (211) and the annular clamping block (121) of the A lower crank (21), and a connecting hole (221) is formed in the bottom of the B lower crank (22);

the transmission gear (3) is rotatably fixed in the cavity (12), the transmission gear (3) is meshed with the rack (2111), and a conical gear A (31) is coaxially arranged on the transmission gear (3);

power generation facility (4), power generation facility (4) include rotor (41), magnetic induction shell (42) and transformer (43), magnetic induction shell (42) are fixed in cavity (12) top, rotor (41) are located in magnetic induction shell (42), rotor (41) bottom is equipped with conical gear B (411), conical gear B (411) with conical gear A (31) meshing, transformer (43) with magnetic induction shell (42) electricity is connected, transformer (43) and 2 emitting diode (131) electricity is connected.

2. A novel crank as claimed in claim 1, wherein: the fixture block (211) is matched with the cavity (12).

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