CN214729434U

CN214729434U - Die head middle sleeve structure with turnover crank

Info

Publication number: CN214729434U
Application number: CN202120291135.3U
Authority: CN
Inventors: 王存峰
Original assignee: Taizhou Qinfeng Materials Co ltd
Current assignee: Taizhou Qinfeng Materials Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-11-16
Anticipated expiration: 2031-02-02

Abstract

The utility model relates to a bicycle field specifically discloses a chain wheel group well cover structure that crank can overturn, including first crank, the cover is installed to first articulate one end and is rotated, the inside of rotating the cover is provided with the second crank, install the elasticity pivot between second crank and the rotation cover, the telescopic internally mounted of spacing round pin has the spacer pin, be connected with the threaded connection rod between pedal column plate and the second crank, the articulate front end of second is provided with the side screw hole, first articulate front surface is provided with pedal column plate draw-in groove. Take the spacer pin out from the spacer pin sleeve, under the effect of the elastic restoring force of the elastic rotating shaft of installation between second crank and the rotating sleeve, the whole body of second crank can be bounced to first articulate inside, puts into the telescopic inside of spacer pin with the spacer pin again, utilizes the card needle to carry out spacing installation with the spacer pin, guarantees that electric bicycle in service pedal can not hit people's foot.

Description

Die head middle sleeve structure with turnover crank

Technical Field

The utility model relates to a bicycle field specifically is a chain wheel group well cover structure that crank can overturn.

Background

An electric bicycle is an electromechanical integrated personal transportation tool which takes a storage battery as an auxiliary energy source and is provided with an electric motor, a controller, the storage battery, a rotating handle brake handle and other operating components and a display instrument system on the basis of a common bicycle, and a front transmission chain wheel is a part for connecting a middle shaft and a crank of the bicycle. People pedal the crank to drive the front transmission chain wheel to rotate, and finally drive the rear wheel to rotate through the chain and the flywheel to provide power so as to complete the whole transmission chain of the bicycle.

However, in the electric bicycle on the market at present, the pedals do not need to be pedaled to provide power, and the pedals can rotate with the front transmission chain wheel, so that the feet of a rider are easily injured, and the pedals are easy to damage. Accordingly, those skilled in the art have provided a structure of a die set center cover in which a crank can be turned over to solve the problems suggested in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a die-feed chain group middle cover structure that crank can overturn to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a crank can overturn chain wheel group well cover structure, includes first crank, the cover is installed to first articulate one end and is rotated, the inside of rotating the cover is provided with the second crank, install the elasticity pivot between second crank and the rotation cover, the last surface mounting who rotates the cover has spacing round pin sleeve, spacing round pin sleeve's internally mounted has the spacer pin, the card needle is installed to the lower extreme of spacer pin, second articulate the place ahead is provided with the pedal column plate, be connected with the threaded connection pole between pedal column plate and the second crank, the articulate front end of second is provided with side screw hole, first articulate front surface is provided with pedal column plate draw-in groove.

As a further aspect of the present invention: the limiting pin sleeve is communicated with the rotating sleeve, the second crank is rotatably connected with the rotating sleeve through an elastic rotating shaft, and the pedal tower plate is fixedly connected with the threaded connecting rod.

As a further aspect of the present invention: the thread connecting rod is rotatably connected with the side thread hole through threads, the limiting pin is in through connection with the rotating sleeve, the clamping needle is in through connection with the limiting pin, and the pedal tower plate is clamped with the pedal tower plate clamping groove.

As a further aspect of the present invention: a front transmission chain wheel is arranged on one side of the first crank, a chain wheel rotating shaft is installed between the front transmission chain wheel and the first crank, and a transmission chain is sleeved on the outer side of the front transmission chain wheel.

As a further aspect of the present invention: the front transmission chain wheel is meshed with the transmission chain to rotate, and the first crank is rotatably connected with the front transmission chain wheel through a chain wheel rotating shaft.

As a further aspect of the present invention: a speed regulation fluted disc is arranged inside one side of the transmission chain, and wheels are mounted on one side of the speed regulation fluted disc.

As a further aspect of the present invention: the speed regulation fluted disc is fixedly connected with the wheels through a connecting rod, and the transmission chain is meshed with the speed regulation fluted disc to rotate.

Compared with the prior art, the beneficial effects of the utility model are that: the device main body is arranged, the crank is respectively provided with two foldable ends, so that corresponding adjustment can be carried out under different conditions, the feet of people can be prevented from being hurt by the pedal with the circumference rotating during power transmission, or the pedal can be damaged and fall off, the disassembled threaded connecting rod and the whole pedal tower plate and the side threaded hole at one end of the second crank are rotatably installed by utilizing the threaded connecting rod connected between the rotating pedal tower plate and the second crank, the limit of the clamping needle at the lower end of the limiting pin is disconnected, the limiting pin is drawn out from the limiting pin sleeve, the whole second crank can bounce to the inside of the first crank under the action of the elastic restoring force of the elastic rotating shaft installed between the second crank and the rotating sleeve, so that the pedal tower plate clamping groove reserved on one side of the tower plate pedal and the second crank is in limiting clamping connection, the limiting pin is placed in the limiting pin sleeve, utilize the card needle to carry out spacing installation with the spacer pin, guarantee that electric bicycle in service pedal can not hit people's foot.

Drawings

FIG. 1 is a schematic structural diagram of a sleeve structure in a crank reversible chain wheel set;

FIG. 2 is a schematic view of a connection structure of a crank in a middle sleeve structure of a chain wheel set with a reversible crank;

FIG. 3 is a cross-sectional view of the first crank in a die set center sleeve structure with the crank reversible.

In the figure: 1. a first crank; 2. a front drive chain wheel; 3. a drive chain; 4. a chain wheel rotating shaft; 5. a speed regulating fluted disc; 6. pedal the column plate; 7. a wheel; 101. a second crank; 102. rotating the sleeve; 103. an elastic rotating shaft; 104. a spacing pin; 105. pedal the column plate neck; 106. clamping a needle; 107. a limit pin sleeve; 601. a threaded connecting rod; 602. side threaded bore.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a set structure in a chain wheel set with a reversible crank comprises a first crank 1, a rotating sleeve 102 is installed at one end of the first crank 1, a second crank 101 is installed inside the rotating sleeve 102, an elastic rotating shaft 103 is installed between the second crank 101 and the rotating sleeve 102, a limit pin sleeve 107 is installed on the upper surface of the rotating sleeve 102, a limit pin 104 is installed inside the limit pin sleeve 107, a clamp pin 106 is installed at the lower end of the limit pin 104, a pedal tray 6 is installed in front of the second crank 101, a threaded connecting rod 601 is connected between the pedal tray 6 and the second crank 101, a side threaded hole 602 is installed at the front end of the second crank 101, and a pedal tray clamping groove 105 is installed on the front surface of the first crank 1.

In fig. 1, 2, 3: the limiting pin sleeve 107 is in through connection with the rotating sleeve 102, the second crank 101 is in rotational connection with the rotating sleeve 102 through an elastic rotating shaft 103, the pedal tower plate 6 is fixedly connected with a threaded connecting rod 601, the threaded connecting rod 601 is in rotational connection with a side threaded hole 602 through a thread, the limiting pin 104 is in through connection with the rotating sleeve 102, the latch pin 106 is in through connection with the limiting pin 104, the pedal tower plate 6 is clamped with a pedal tower plate clamping groove 105, one side of the first crank 1 is provided with a front transmission toothed disc 2, a toothed disc rotating shaft 4 is arranged between the front transmission toothed disc 2 and the first crank 1, a transmission chain 3 is sleeved on the outer side of the front transmission toothed disc 2, the front transmission toothed disc 2 is in meshed rotation with the transmission chain 3, the first crank 1 is in rotational connection with the front transmission toothed disc 2 through the toothed disc rotating shaft 4, a speed regulating toothed disc 5 is arranged inside one side of the transmission chain 3, one side of the speed regulating toothed disc 5 is provided with a wheel 7, and the speed regulating toothed disc 5 is fixedly connected with the wheel 7 through a connecting rod, the transmission chain 3 is meshed with the speed regulation fluted disc 5 for rotation.

In fig. 1, 3: when electric bicycle need carry out the manpower and trample and provide power, pedal column plate 6 is trampled to the foot, passes through threaded connection rod 601 with power and transmits for first crank 1, and first crank 1 utilizes chain wheel pivot 4 to drive preceding transmission chain wheel 2 and rotates to make preceding transmission chain wheel 2 pass through drive chain 3 with kinetic energy and drive speed governing fluted disc 5 and make wheel 7 rotate.

In fig. 2, 3: rotate the threaded connection rod 601 of being connected between pedal column plate 6 and the second crank 101, the threaded connection rod 601 that will dismantle and pedal column plate 6 are whole and the side screw hole 602 of second crank 101 one end rotate the installation, break off spacing of spacer pin 104 lower extreme bayonet 106 again, under the effect of the elastic restoring force of the elastic rotating shaft 103 of installation between second crank 101 and the rotating sleeve 102, the whole of second crank 101 can be bounced to the inside of first crank 1, utilize bayonet 106 to carry out spacing installation with spacer pin 104, thereby when electric bicycle moves, can be limited prevent that pedal column plate 6 from hitting people's foot.

The utility model discloses a theory of operation is: when the electric bicycle is normally used, due to electric transmission, the speed regulation fluted disc 5 can automatically rotate, the front transmission fluted disc 2 can do circular motion with the first crank 1 and the pedal tower plate 6 in the rotating process, so that the normal arrangement of feet of a riding person can be easily influenced, when the electric bicycle does not need to drive the first crank 1 to carry out power transmission by stepping on the pedal tower plate 6, the disassembled threaded connecting rod 601, the whole pedal tower plate 6 and the disassembled threaded connecting rod 601 are rotatably installed with the side threaded hole 602 at one end of the second crank 101 by rotating the threaded connecting rod 601 connected between the pedal tower plate 6 and the second crank 101, the limit of the clamping needle 106 at the lower end of the limit pin 104 is disconnected, the limit pin 104 is drawn out from the limit pin sleeve 107, under the action of the elastic force of the elastic rotating shaft 103 installed between the second crank 101 and the rotating sleeve 102, the second crank 101 is whole to be bounced to the inside of first crank 1 to the pedal column plate draw-in groove 105 that makes pedal column plate 6 and second crank 101 one side reserve carries out spacing joint, puts into the inside of spacer pin sleeve 107 with spacer pin 104 again, utilizes card needle 106 to carry out spacing installation with spacer pin 104, thereby when electric bicycle moves, can be limited prevent that pedal column plate 6 from beating people's foot.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A die-head set middle sleeve structure with a reversible crank comprises a first crank (1) and is characterized in that, one end of the first crank (1) is provided with a rotating sleeve (102), a second crank (101) is arranged in the rotating sleeve (102), an elastic rotating shaft (103) is arranged between the second crank (101) and the rotating sleeve (102), a limiting pin sleeve (107) is arranged on the upper surface of the rotating sleeve (102), a limiting pin (104) is arranged in the limiting pin sleeve (107), the lower end of the limit pin (104) is provided with a clamp needle (106), a pedal tower plate (6) is arranged in front of the second crank (101), a threaded connecting rod (601) is connected between the pedal tower plate (6) and the second crank (101), the front end of the second crank (101) is provided with a side threaded hole (602), and the front surface of the first crank (1) is provided with a pedal plate clamping groove (105).

2. The crank reversible chain wheel set middle sleeve structure according to claim 1, characterized in that the limiting pin sleeve (107) is connected with the rotating sleeve (102) in a penetrating way, the second crank (101) is connected with the rotating sleeve (102) in a rotating way through an elastic rotating shaft (103), and the pedal plate (6) is fixedly connected with the threaded connecting rod (601).

3. The crank reversible chain wheel set middle sleeve structure according to claim 1, characterized in that the threaded connecting rod (601) is in threaded rotary connection with the side threaded hole (602), the limiting pin (104) is in through connection with the rotary sleeve (102), the clamping pin (106) is in through connection with the limiting pin (104), and the pedal plate (6) is clamped with the pedal plate clamping groove (105).

4. The die sleeve structure of the die sleeve for the crank reversible die sleeve set according to claim 1 is characterized in that a front transmission die sleeve (2) is arranged on one side of the first crank (1), a die sleeve rotating shaft (4) is installed between the front transmission die sleeve (2) and the first crank (1), and a transmission chain (3) is sleeved on the outer side of the front transmission die sleeve (2).

5. A crank reversible chain wheel set middle sleeve structure according to claim 4, characterized in that the front transmission chain wheel (2) is meshed with a transmission chain (3) for rotation, and the first crank (1) is rotatably connected with the front transmission chain wheel (2) through a chain wheel rotating shaft (4).

6. The chain wheel set middle sleeve structure with the reversible crank is characterized in that a speed regulation fluted disc (5) is arranged inside one side of the transmission chain (3), and wheels (7) are mounted on one side of the speed regulation fluted disc (5).

7. The chain wheel set middle sleeve structure with the reversible crank as claimed in claim 6, wherein the speed regulation fluted disc (5) is fixedly connected with the wheel (7) through a connecting rod, and the transmission chain (3) is meshed with the speed regulation fluted disc (5) to rotate.