CN206257153U - Vehicle-carried crank axle - Google Patents

Abstract

The utility model is related to a kind of vehicle-carried crank axle, and linking end, a connection shaft and one second crank comprising one first crank links end.First crank link end be along one it is axially extending go out, with a substantive star profile cross-section, and be used to wear one first sleeve joint hole for being fixed in one first crank.Connection shaft is to link end from the first crank to axially extend.Second crank links end to be axially extended from connection shaft, and is used to wear one second sleeve joint hole for being fixed in one second crank, whereby, has substantive star profile cross-section because the first crank links end, therefore can effectively promote the torsion that can bear.

Description

Vehicle-carried crank axle

Technical field

The utility model is related to a kind of crank axle, more particularly to a kind of is applied to vehicle-carried crank axle.

Background technology

In general, in movement closely, due to bicycle compared to vehicles such as locomotives or automobile for, tool There is a flexibility of height, and because the drivings power resources of bicycle are trampling for manpower, being not required to add fuel in addition just can manage it Sail, and there is the convenient advantage of storage because of taking up space smaller, even if therefore in scientific and technological flourishing modern times, daily life In still visible people ride bicycle as running vehicle closely often.

From the above, although bicycle is available for the upper road that people are instant because it is manpower to drive power resources, but also therefore When user is tired or runs into uphill way, certain gait of march, therefore the electricity with auxiliary power are often unable to maintain that Dynamic bicycle also just arises at the historic moment.

Wherein, due to power resources the trampling for manpower of bicycle, therefore general bicycle is set in vehicle frame There is a crank axle, and using the square connection end difference connecting crank at crank axle two ends, so as to when user tramples crank, leading to Cross crank axle and send power to wheel shaft, allow tire as preceding rotation.When bicycle enters turns to electric bicycle, mainly It is provided with motor apparatus on vehicle frame, and crank axle is sent power to by actuated element, and then be resent to wheel shaft and drives Tyre rotation；However, because user is in actually riding electric bicycle, it is more likely that while passing through electro-motor and riding Crank handle turns crankshaft rotation, cause crank axle to be provided with one end of the actuated element of electro-motor at the same bear electro-motor with The power that crank is transmitted, causes crank axle to thus result in damage, especially between the power that electro-motor and crank are transmitted Deformed damaged is more prone to when having drop and forming torsion difference.

Utility model content

In view of in existing technology, the device with various power outputs such as electric bicycle would generally be in power transmission shaft One end connect various power resources, but the supply of these power resources is often inconsistent, causes to hold very much during drive axis Easily bear that excessive torsion is poor, and then cause to damage because of excessive torsion difference；Edge this, the purpose of this utility model is to carry For a kind of vehicle-carried crank axle, to disperse produced torsion between various power resources using more stress point Difference.

Based on above-mentioned purpose, the necessary technology means that the utility model is used are to provide a kind of vehicle-carried crank Axle, links end, a connection shaft and one second crank and links end comprising one first crank.It is edge that first crank links end One it is axially extending go out, with a substantive star profile cross-section, and be used to wear be fixed in one first crank one first socket Hole；Connection shaft be from first crank link end along this it is axially extending go out；It is from the connection shaft edge that second crank links end This it is axially extending go out, and be used to wear one second sleeve joint hole for being fixed in one second crank.

In an attached technological means derived from above-mentioned necessary technology means, first crank links end and includes one the One connected section and one second connected section.First connected section be from the connection shaft along this it is axially extending go out, and be used to be fixed in one Auxiliary power output precision；Second connected section be from first connected section along this it is axially extending go out, and be used to wear and be fixed in this First sleeve joint hole.

In an attached technological means derived from above-mentioned necessary technology means, first crank link end be along one with The axial opposed rotary-inversion axis to protruding out one first stud, and first stud be with so that a nut is screwed togather, make whereby this It is affixed each other with first crank that one crank links end.

In an attached technological means derived from above-mentioned necessary technology means, it is along the axle that first crank links end To opening up one first screw, and first screw be with so that a screw piece is screwed togather, make whereby first crank link end with First crank is affixed each other.

In an attached technological means derived from above-mentioned necessary technology means, it is along the axle that second crank links end To protruding out one second stud, and second stud be with so that a nut is screwed togather, make whereby second crank link end with Second crank is affixed each other.

In an attached technological means derived from above-mentioned necessary technology means, second crank link end be along one with The axial opposed rotary-inversion axis is to opening up one second screw, and second screw is, with so that another screw piece is screwed togather, this to be made whereby It is affixed each other with second crank that second crank links end.In practice, it is used to be screwed together in the first screw or the second screw Screw piece all can be one of screw, screw or stud.

In an attached technological means derived from above-mentioned necessary technology means, it is have one that second crank links end Substantive star profile cross-section or a substantially rectangular profile cross-section.

In an attached technological means derived from above-mentioned necessary technology means, the diameter of the connection shaft be from this first Crank links end junction and is decremented to and second crank link end junction along the axial direction.

As noted previously, as the utility model links using with substantive star profile cross-section (first) crank End to replace there is crank of the essence away from shape (square comprising essence) profile cross-section to link end in the prior art；Cause This, has the characteristic of the force part of a greater number and larger area using star profile, makes (in the utility model One) crank links end can bear larger torsion.

From the above, star profile cross-section is provided with because the first crank of the present utility model links end, therefore is compared Link the substantially rectangular profile cross-section that end has in the second crank, the utility model can utilize the first crank connecting end Portion links auxiliary power output precision and the first crank, and links the second crank of end link, effective solution using the second crank Certainly connection shaft two ends are subjected to the problem of different torsion.In other words, it is possible to resolve the first crank links end to be needed to bear larger torsion Power, but the second crank links the problem that end is only subjected to smaller torsion.

Further, since the diameter of connection shaft of the present utility model is passed vertically from the first crank link end junction Reduce to and link end junction with the second crank, therefore be linked with the first crank of the first crank and auxiliary power output precision Link between end and only the second crank link end of the second crank of link, the diameter change that can be successively decreased by connection shaft, Avoiding connection shaft has obvious diameter drop (the section-differential diameter change of discontinuity).Whereby, can be prevented effectively from and link The stress concentration phenomenon of locality is produced at axle.

The specific embodiment that the utility model is used, will be further described by following embodiment and accompanying drawing.

Brief description of the drawings

Fig. 1 is that the plane for showing the vehicle-carried crank axle that the preferred embodiment of the utility model first is provided is illustrated Figure；

Fig. 2 is the sectional schematic diagram for showing Figure 1A-A；

Fig. 3 is the sectional schematic diagram for showing Figure 1B-B；

Fig. 4 is to show putting down for the vehicle-carried crank axle practice that the preferred embodiment of the utility model first is provided Face schematic diagram；

Fig. 5 is the sectional schematic diagram for showing Fig. 4 C-C；

Fig. 6 is the sectional schematic diagram for showing Fig. 4 D-D；

Fig. 7 is to show putting down for the vehicle-carried crank axle practice that the preferred embodiment of the utility model second is provided Face schematic diagram；

Fig. 8 is the sectional schematic diagram for showing Fig. 7 E-E；

Fig. 9 is to show putting down for the vehicle-carried crank axle practice that the preferred embodiment of the utility model the 3rd is provided Face schematic diagram；

Figure 10 is to show the vehicle-carried crank axle practice that the preferred embodiment of the utility model the 4th is provided Floor map.

Drawing reference numeral explanation：

100th, 100a, 100b, 100c vehicle-carried crank axle；

1st, the crank of 1a, 1b, 1c first links end；

11st, the connected section of 11a, 11b, 11c first；

12nd, the connected section of 12a, 12d, 12c second；

121st, the screw of 121a, 121c first；

The stud of 13a, 13b first；

122 substantive star profile cross-sections；

2nd, 2a, 2b, 2c connection shaft；

21b, 21c keyway；

3rd, the crank of 3a, 3b, 3c second links end；

31st, 31a, 31b, 31c connected section；

311 substantially rectangular profile cross-sections；

The screws of 311c second；

32nd, the stud of 32a, 32b second；

200 auxiliary power output precisions；

301 first cranks；

3011 first sleeve joint holes；

302 screw pieces；

303 pads；

401 second cranks；

4011 second sleeve joint holes；

402 nuts；

403 pads；

L1, L2, L3, L4 axial direction；

The diameters of d1 first；

D2 Second bobbin diameters.

Specific embodiment

Specific embodiment of the present utility model is described in more detail below in conjunction with schematic diagram.Retouched according to following Stating will become apparent from technical scheme scope, advantages and features of the present utility model.It should be noted that, accompanying drawing is using very simplified Form and use non-accurately ratio, be only used to conveniently, clearly aid in illustrating the utility model embodiment purpose.

Fig. 1 is referred to, Fig. 1 is to show the vehicle-carried crank axle that the preferred embodiment of the utility model first is provided Floor map.As illustrated, a kind of vehicle-carried crank axle 100 links end 1, a connection shaft 2 comprising one first crank And one second crank link end 3.

First crank links end 1 and includes one first connected section 11 and one second connected section 12.First connected section 11 is Extend along an axial direction L1, the second connected section 12 be from the first connected section 11 vertically L1 it is oppositely extending go out, and second link Section 12 is that L1 opens up one first screw 121 vertically.

Connection shaft 2 is to link the first connected section 11 of end 1 from the first crank vertically L1 extends, and connection shaft 2 Diameter is that L1 is decremented to away from the first crank connecting end vertically from the first diameter d1 with the first crank link junction of end 1 Portion 1 and less than the Second bobbin diameter d2 of the first diameter d1.

Second crank links end 3 and includes a connected section 31 and one second stud 32.Connected section 31 is along axle from connection shaft 2 Extend to L1, and the second stud 32 is that L1 is protruded out vertically from connected section 31.

It is the sectional schematic diagram for showing Figure 1A-A please continue to refer to Fig. 2 and Fig. 3, Fig. 2；Fig. 3 is the section for showing Figure 1B-B Schematic diagram.As illustrated, the second connected section 12 that the first crank links end 1 has a substantive star profile cross-section 122, and The connected section 31 that second crank links end 3 is that have a substantially rectangular profile cross-section 311.Wherein, specifically, Refer to except 12 turning points in the signified substantive star profile cross-section 122 of the present embodiment (comprising six angles and six waists) Arc lead angle structure outside, star-shaped profile cross-section is generally presented；By that analogy, substantially rectangular profile cross-section 311 exists Referred in the present embodiment in addition to the arc lead angle structure at four turning points (four angles), the profile of rectangle is generally presented Cross section；Additionally, the rectangle of the present embodiment is square, but not limited to this.

Please continue to refer to Fig. 4 to Fig. 6, Fig. 4 is that to show that the preferred embodiment of the utility model first is provided vehicle-carried Crank axle practice floor map；Fig. 5 is the sectional schematic diagram for showing Fig. 4 C-C；Fig. 6 is to show that Fig. 4 D-D's is disconnected Face schematic diagram.

As illustrated, in practice with upper, the first connected section 11 that the first crank links end 1 is that to be fixed in one auxiliary Power-assist power output precision 200, and the second connected section 12 that the first crank links end 1 is to wear to be fixed in one first crank 301 one first sleeve joint hole 3011, wherein the first sleeve joint hole 3011 matches for one with substantive star profile cross-section 122 Star sleeve joint hole.Additionally, the first crank 301 is also locked the first screw 121 of the second connected section 12 and is entered by a screw piece 302 Row is fixed, and is additionally provided with a pad 303 between the crank 301 of screw piece 302 and first.In the present embodiment, screw piece 302 be for Screw, but in other embodiments, screw piece 302 is alternatively bolt or stud.

The connected section 31 that second crank links end 3 is to wear one second socket for being fixed in one second crank 401 Hole 4011, wherein the second sleeve joint hole 4011 is to be a rectangle sleeve joint hole matched with substantially rectangular profile cross-section 122.This Outward, the second crank 401 is also locked the second stud 32 and is fixed by a nut 402, and the crank 401 of nut 402 and second Between be additionally provided with a pad 403.

It is to show the vehicle-carried song that the preferred embodiment of the utility model second is provided to refer to Fig. 7 and Fig. 8, Fig. 7 The floor map of arbor practice；Fig. 8 is the sectional schematic diagram for showing Fig. 7 E-E.As illustrated, a kind of vehicle-carried Crank axle 100a links end 1a, a connection shaft 2a and one second crank and links end 3a comprising one first crank.

First crank links end 1a and includes one first connected section 11a, one second connected section 12a and one first stud 13a.First connected section 11a is extended along an axial direction L2, and the second connected section 12a is from the first connected section 11a L2 vertically It is oppositely extending go out, the first stud 13a be from the second connected section 12a vertically L2 reversely protrude out.

Connection shaft 2a is that L2 extends vertically from the first connected section 11a of the first crank link end 1a, and connection shaft The diameter of 2a is that L2 is decremented to away from the first crank link end 1a companies vertically from end 1a junctions are linked with the first crank Meet place.

Second crank links end 3a and includes a connected section 31a and one second stud 32a.Connected section 31a is from connection shaft L2 extends 2a vertically, and the second stud 32a is that L2 is protruded out vertically from connected section 31a.

As described above, vehicle-carried crank axle 100a is similar to above-mentioned vehicle-carried crank axle 100, its difference master It is linking end 1a from the first crank and including one first stud 13a for vehicle-carried crank axle 100a, therefore compares Offering the first screw 121 in the first crank link end 1 of vehicle-carried crank axle 100 is available for screw piece 302 to be spirally connected, the One crank links end 1a can be screwed togather by the first stud 13a with another nut (not shown), whereby, as the second connected section 12a Connected with the first sleeve joint hole (not shown) for matching by essence star profile cross-section 121a with one first crank (not shown) During knot, can be affixed to carry out with screwing togather for nut by the first stud 13a.

Fig. 9 is referred to, Fig. 9 is to show the vehicle-carried crank axle reality that the preferred embodiment of the utility model the 3rd is provided The floor map that border uses.As illustrated, a kind of vehicle-carried crank axle 100b comprising one first crank link end 1b, One connection shaft 2b and one second crank link end 3b.

First crank links end 1b and includes one first connected section 11b, one second connected section 12b and one first stud 13b.First connected section 11b is extended along an axial direction L3, and the second connected section 12b is from the first connected section 11b L3 vertically It is oppositely extending go out, the first stud 13b be from the second connected section 12b vertically L3 reversely protrude out.

Connection shaft 2b is that L3 extends vertically from the first connected section 11b of the first crank link end 1b.Second crank Link end 3b and include a connected section 31b and one second stud 32b.Connected section 31b is that L3 extends vertically from connection shaft 2b, And second stud 32b be that L3 is protruded out vertically from connected section 31b.Wherein, connection shaft 2b is linked to the second crank link end One end of 3b is provided with a keyway 21b, and keyway 21b is to be linked to a power output member (not shown) for being driven, actually Power output member is, for example, fluted disc, but not limited to this.

As described above, vehicle-carried crank axle 100b is similar to above-mentioned vehicle-carried crank axle 100a, its difference It is that connection shaft 2b is that L3 extends horizontally to link vertically by the junction of connection shaft 2b and the first crank link end 1b Axle 2b and the second crank link the junction of end 3b, and the first crank links the second connected section 12b and second of end 1b Second connected section 12as of the connected section 31b of crank link end 3b all to above-mentioned second preferred embodiment is similar, equally has Such as the substantive star profile cross-section 122 of the first preferred embodiment；Whereby, the first crank links end 1b and the second crank links End 3b all can simultaneously be provided with auxiliary power output precision (not shown) and crank (not shown), imply that vehicle-carried crank Axle 100b can accept ridden by two-person and trample output with double auxiliary powers.

Figure 10 is to show the vehicle-carried crank axle practice that the preferred embodiment of the utility model the 4th is provided Floor map.As illustrated, a kind of vehicle-carried crank axle 100c links end 1c, a connection shaft comprising one first crank 2c and one second crank link end 3c.

First crank links end 1c and includes one first connected section 11c and one second connected section 12c.First connected section 11c To extend along an axial direction L4, the second connected section 12c be from the first connected section 11c vertically L4 it is oppositely extending go out, and second Connected section 12c is that L4 opens up one first screw 121c vertically.

Connection shaft 2c is that L4 extends vertically from the first connected section 11c of the first crank link end 1c.Second crank Link end 3c and include a connected section 31c.Connected section 31c is that L4 extends vertically from connection shaft 2c, and connected section 31c is edge Axial L4's reversely opens up one second screw 311c.Wherein, connection shaft 2c be linked to the second crank link end 3c one end set There is a keyway 21c, and keyway 21c is equally to be linked to a power output member (not shown) for being driven.

As described above, vehicle-carried crank axle 100c is similar to above-mentioned vehicle-carried crank axle 100b, its difference It is that the first crank links end 1c and one second crank links end 3c and is respectively equipped with the first screw 121c and the second screw 311c, whereby, can carry out consolidating for the first crank (not shown) and the second crank (not shown) by screw piece (not shown) respectively Calmly, the connected section 31c of the second connected section 12c and the second crank link end 3c and due to the first crank link end 1c is all The second connected section 12a to above-mentioned second preferred embodiment is similar, is equally have the substantive star such as the first preferred embodiment Profile cross-section 122；Therefore, the first crank links end 1c and the second crank link end 3c and all can simultaneously be provided with auxiliary and move Power output precision (not shown) and crank (not shown), imply that vehicle-carried crank axle 100c can accept ridden by two-person trample with it is double The output of auxiliary power.

In sum, because the utility model is using the first crank connecting end with a substantive star profile cross-section Portion connects the first crank, thus end can be linked by the first crank with substantive star profile cross-section bear compared with Big torsion is poor, wherein, there is substantive star when the first crank of vehicle-carried crank axle of the present utility model links end Profile cross-section, and the second crank links end when having substantially rectangular profile cross-section, by the first crank links end institute The torsion for bearing is larger, therefore the first crank links end and can link slightly larger than the second crank with the diameter of the joint of connection shaft End and the joint of connection shaft, link end all with substantive pocket-wheel when the first crank links end with the second crank in addition During wide cross section, the first crank links end and all can be used to link auxiliary power output precision with song with the second crank link end Handle.

Crank axle compared to prior art is often poor and cause damage because bearing torsion that different dynamic source formed, The utility model links end using first crank with substantive star profile cross-section or the first crank link end can be with Accept larger torsion poor, and then effectively lift the stability of vehicle-carried crank axle, and extend vehicle-carried crank The service life of axle.

Specifically, refer to except turning point (bag in the signified substantive star profile cross-section of the utility model Containing multiple angles and multiple waists) lead angle structure outside, star-shaped profile cross-section is generally presented.Similarly, substantive square contour is horizontal Section also refers to and square profile cross-section is generally presented in addition to lead angle structure.

By the above detailed description of preferred embodiments, it is intended to more clearly describe feature of the present utility model with essence God, and category of the present utility model is any limitation as with above-mentioned disclosed preferred embodiment not.On the contrary, its mesh Be intended to cover various changes and tool equality is arranged in the category of the technical solution of the utility model.

Claims (11)

1. a kind of vehicle-carried crank axle, it is characterised in that include：

One the first crank for being used to wear one first sleeve joint hole for being fixed in one first crank links end, is axially extending along one Go out, with a substantive star profile cross-section；

One connection shaft, be from first crank link end along it is described it is axially extending go out；And

One the second crank for being used to wear one second sleeve joint hole for being fixed in one second crank links end, is from the connection shaft Along it is described it is axially extending go out.

2. vehicle-carried crank axle according to claim 1, it is characterised in that first crank links end bag Contain：

One the first connected section for being used to be fixed in an auxiliary power output precision, is along described axially extending from the connection shaft Go out；And

One is used to wear the second connected section for being fixed in first sleeve joint hole, is along described axial from first connected section It is oppositely extending go out.

3. vehicle-carried crank axle according to claim 1, it is characterised in that it is edge that first crank links end One with the axial opposed rotary-inversion axis to protrude out one be used to a nut screw togather with affixed first crank link end with First stud of first crank.

4. vehicle-carried crank axle according to claim 1, it is characterised in that it is edge that first crank links end The axial direction opens up one to screw togather link end and first crank with affixed first crank the with a screw piece One screw.

5. vehicle-carried crank axle according to claim 4, it is characterised in that it is screw, bolt that the screw piece is One of with stud.

6. vehicle-carried crank axle according to claim 1, it is characterised in that it is edge that second crank links end The axial direction protrudes out one to screw togather link end and second crank with affixed second crank the with a nut Two studs.

7. vehicle-carried crank axle according to claim 1, it is characterised in that it is edge that second crank links end One with the axial opposed rotary-inversion axis to open up one be used to a screw piece screw togather with affixed second crank link end with Second screw of second crank.

8. vehicle-carried crank axle according to claim 7, it is characterised in that it is screw, bolt that the screw piece is One of with stud.

9. vehicle-carried crank axle according to claim 1, it is characterised in that it is tool that second crank links end There is a substantive star profile cross-section.

10. vehicle-carried crank axle according to claim 1, it is characterised in that second crank links end is With a substantially rectangular profile cross-section.

11. vehicle-carried crank axles according to claim 10, it is characterised in that the diameter of the connection shaft be from First crank links end junction and is decremented to and second crank link end junction along the axial direction.