CN207868938U - A kind of bicycle seat adjustment gear case - Google Patents

Abstract

The utility model discloses a kind of bicycle seat adjustment gear casees,Including bicycle rack and motor,Telescoping tube and lead screw are installed on bicycle rack,Telescoping tube is fixedly connected with seat,Lead screw is connected with the rotor of motor,Sliding block is threaded on lead screw,Sliding block is fixedly connected with the lower end of telescoping tube,The rotor dynamic of motor connects transmission device,Transmission device is fixedly connected with a slide block,Sliding block drives telescopic rod to move up and down,Transmission device includes the first driving wheel,First driven wheel,First internal gear,Second driving wheel,Second driven wheel,Secondary annulus and output shaft,Motor drives the first driving wheel,By said gear engaged transmission,The power of output shaft output is the effect of the first driven wheel and secondary annulus superposition,Pass through power dividing,Reduce the transmission load of gear,It is compact-sized,It realizes in a smaller space and transmits larger power,Volume thus may be used,The more small and exquisite motor of weight,Further mitigate the weight of bicycle.

Description

A kind of bicycle seat adjustment gear case

Technical field

The utility model is related to electric chain saw field, more particularly to a kind of adjusting bicycle seat lifting makes with motor cooperation Gear-box.

Background technology

The bicycle of people is mostly the height for adjusting seat manually at present, generally mostly uses the structure of telescoping tube, voluntarily Vehicle seats are fixed on the top of telescoping tube, and the lower end of telescoping tube is inserted into cycle frame and can be adjusted up and down, needed for being transferred to Height of seat when with eccentric button lock telescoping tube, it is simple in structure, it is easy to adjust, but for strength such as child or the elderlys For weaker people, such eccentric button needs exert just to break into two with one's hands and buckle up, and are inconvenient, so people use electricity again The mode of machine, lead screw and sliding block is controlled, and the rotor of motor is fixedly connected with a slide block, while sliding block is connect with wire rod thread It is fixedly connected with the lower end of telescoping tube, when motor rotates, sliding block is slided up and down to drive on bicycle seat along lead screw and be lowered It is whole, but the motor volume that uses of such mode is larger and heavier-weight, it needs light to ride to facilitate so not meeting bicycle Capable needs.

Invention content

For overcome the deficiencies in the prior art, the utility model provides a kind of compact, and cooperation small size motor uses To adjust the gear-box of bicycle seat height.

Technical solution adopted by the utility model to solve its technical problems is：

A kind of bicycle seat adjustment gear case, including bicycle rack and the motor in the bicycle rack, institute It states and telescoping tube and lead screw is installed on bicycle rack, seat, the lower end of the lead screw are fixedly connected at the top of the telescoping tube It is connect with the rotor of the motor, sliding block is threaded on the lead screw, the lower end of the sliding block and the telescoping tube is fixed Connection, between the rotor of the motor and the lead screw by a transmission device connect, the transmission device include the first driving wheel, First driven wheel, the first internal gear, the second driving wheel, the second driven wheel, secondary annulus and output shaft；Described first actively Wheel is fixedly connected with the rotor of the motor, and first driving wheel is engaged with the first internal gear, first internal gear and the One driven wheel engages, and first driven wheel is engaged with output shaft；First internal gear is further engaged with the second driving wheel, Second driving wheel is engaged with the second driven wheel, and second driven wheel is engaged with secondary annulus, the secondary annulus It is fixedly connected with output shaft, the lower end of the lead screw is axially socketed on the output shaft.

The motor further includes stator, and the stator is made of nose shell, coil rack and rear end housing, and the rotor is located at Fan is nested and fixed in part in the stator, and the nose shell is radially provided with the air outlet around the fan, described The air duct that at least twice are averagely arranged axially is provided in coil rack, it is arranged in a ring that the rear end housing is provided with several Air inlet, the air outlet, fan, air duct and air inlet are interconnected, and all the sum of area of the air outlet is at least institute The half of nose shell gusset area is stated, all the sum of area of the air inlet is at least the one of the rear end housing radial section product Half.

The nose shell is provided with threaded hole, and the rear end housing is provided with the bolt for being threadedly coupled the threaded hole, assembles Afterwards, the coil rack is clamped between the nose shell and rear end housing.

The air duct has been provided with six, and all the sum of the radial section product in the air duct is at least the coil rack diameter To the half of sectional area.

The air inlet includes the first air inlet, the second air inlet and the third air inlet that bore is sequentially increased, and described One air inlet has several and circularizes arrangement, and second air inlet has several and circularizes arrangement, the third air inlet Mouth has several and circularizes arrangement, and the air inlets of three composition annular arrays are arranged in concentric circles.

The transmission device further includes spring bearing and fixed frame, and the output shaft in the spring bearing by being socketed in On the fixed frame, the motor insertion is mounted in the fixed frame.

The utility model has the beneficial effects that：The rotor dynamic of the motor of the utility model connects transmission device, transmission dress Set and be fixedly connected with a slide block, sliding block drive telescopic rod move up and down and adjust seat height, transmission device include the first driving wheel, First driven wheel, the first internal gear, the second driving wheel, the second driven wheel, secondary annulus and output shaft, motor drive first Driving wheel, by said gear engaged transmission, the power of output shaft output is the effect of the first driven wheel and secondary annulus superposition Fruit reduces the transmission load of gear, compact-sized, gear range reduces electricity between 1-40 by power dividing The torque that machine passes over is realized transmit larger power in a smaller space, volume, weight thus may be used more Small and exquisite motor further mitigates the weight of bicycle.

Description of the drawings

Present invention will be further explained below with reference to the attached drawings and examples.

Fig. 1 is the structure sectional view of the utility model transmission device；

Fig. 2 is the structural schematic diagram of the utility model motor；

Fig. 3 is the structural decomposition diagram of the utility model motor.

Specific implementation mode

Referring to figs. 1 to Fig. 3, a kind of bicycle seat adjustment gear case, including bicycle rack and be mounted on the bicycle Motor in frame, motor are electrically connected with battery and control button mounted on handle-bar, are equipped on the bicycle rack Telescoping tube and lead screw, seat is fixedly connected at the top of the telescoping tube, and the lower end of the lead screw and the rotor 1 of the motor connect It connects, sliding block is threaded on the lead screw, the sliding block is fixedly connected with the lower end of the telescoping tube, it is characterised in that described Between the rotor 1 and the lead screw of motor by a transmission device connect, the transmission device include the first driving wheel 21, first from Driving wheel 22, the first internal gear 23, the second driving wheel 24, the second driven wheel 25, secondary annulus 26 and output shaft 27；Described One driving wheel 21 is fixedly connected with the rotor 1 of the motor, and the rotor 1 of the motor 4 and the first driving wheel 21 are generally using this Common shaft coupling is attached in field technology, also can directly coaxial rigid be connected, in first driving wheel 21 and first Gear 23 engages, and first internal gear 23 is engaged with the first driven wheel 22, and first driven wheel 22 is engaged with output shaft 27； First internal gear 23 is further engaged with the second driving wheel 24, and second driving wheel 24 is engaged with the second driven wheel 25, Second driven wheel 25 is engaged with secondary annulus 26, and the secondary annulus 26 is fixedly connected with output shaft 27, in this reality Apply in example, the secondary annulus 26 and output shaft 27 can also integrated setting, the lower end of the lead screw is axially socketed in described On output shaft 27, the transmission device further includes spring bearing 28 and fixed frame 29, and the output shaft 27 passes through the support shaft It is socketed in holding 28 on the fixed frame 29, the motor insertion is mounted in the fixed frame 29.Motor drives the first active Wheel, by said gear engaged transmission, the power of output shaft output is the effect of the first driven wheel and secondary annulus superposition, is led to Overpower shunts, and reduces the transmission load of gear, compact-sized, and gear range reduces motor biography between 1-40 The torque passed is realized transmit larger power in a smaller space, it is more small and exquisite that volume, weight thus may be used Motor, further mitigate bicycle weight.

In the present embodiment, selected motor is micro-machine, and this motor can be built in bicycle rack, described Motor further includes stator, and the stator is made of nose shell 2, coil rack 3 and rear end housing 4, and the rotor 1 is located at the stator Fan 5, the radial air outlet 6 being provided with around the fan 5 of the nose shell 2, the coil is nested and fixed in interior part The air duct 7 that at least twice are averagely arranged axially is provided in skeleton 3, it is arranged in a ring that the rear end housing 4 is provided with several Air inlet, the air outlet 6, fan 5, air duct 7 and air inlet are interconnected, and the sum of area of whole air outlets 6 is at least The sum of area for the half of 2 gusset area of the nose shell, whole air inlets is at least 4 radial section of the rear end housing Long-pending half, in the present embodiment, the air duct 7 have been provided with six, and the sum of the radial section product in whole air ducts 7 is at least For the half of 3 radial section of coil rack product, the air inlet includes the first air inlet 8, second that bore is sequentially increased Air inlet 11 and third air inlet 12, first air inlet 8 have several and circularize arrangement, and second air inlet 11 has Several and circularize arrangement, the third air inlet 12 has several and circularizes arrangement, three composition annular arrays air inlet Mouth is arranged in concentric circles, and the periphery that motor is located on this bicycle rack is additionally provided with heat emission hole, when this bicycle seat adjusts tooth When roller box works, rotor drives fan rotation, thus by cool ambient air through air duct and air outlet after air inlet sucking, finally It is discharged through heat emission hole, air outlet, air duct and the air inlet of large area increase rate of air circulation, to efficiently take away coil rack The heat of generation reduces operating temperature, simple in structure, good cooling effect.

In addition, the nose shell 2 is provided with threaded hole 9, the rear end housing 4, which is provided with, is threadedly coupled the threaded hole 9 Bolt 10, after assembly, the coil rack 3 is clamped between the nose shell 2 and rear end housing 4, simple in structure, dismounting side Just, easy to maintain.

Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it still can be with technical scheme described in the above embodiments is modified, or to which part technical characteristic Equivalent replacement is carried out, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (6)

1. a kind of bicycle seat adjustment gear case, including bicycle rack and the motor in the bicycle rack, described Telescoping tube and lead screw are installed on bicycle rack, are fixedly connected with seat at the top of the telescoping tube, the lower end of the lead screw with The rotor of the motor（1）It connects, is threaded with sliding block on the lead screw, the lower end of the sliding block and the telescoping tube is fixed Connection, it is characterised in that the rotor of the motor（1）It is connect by a transmission device between the lead screw, the transmission device packet Include the first driving wheel（21）, the first driven wheel（22）, the first internal gear（23）, the second driving wheel（24）, the second driven wheel（25）、 Secondary annulus（26）And output shaft（27）；First driving wheel（21）With the rotor of the motor（1）It is fixedly connected, institute State the first driving wheel（21）With the first internal gear（23）Engagement, first internal gear（23）With the first driven wheel（22）Engagement, First driven wheel（22）With output shaft（27）Engagement；First internal gear（23）Further with the second driving wheel（24）It nibbles It closes, second driving wheel（24）With the second driven wheel（25）Engagement, second driven wheel（25）With secondary annulus（26） Engagement, the secondary annulus（26）With output shaft（27）It is fixedly connected, the lower end of the lead screw is axially socketed in the output Axis（27）On.

2. bicycle seat adjustment gear case according to claim 1, it is characterised in that the motor further includes stator, institute Stator is stated by nose shell（2）, coil rack（3）With rear end housing（4）It constitutes, the rotor（1）Part in the stator Fan is nested and fixed（5）, the nose shell（2）Radial direction is provided with around the fan（5）Air outlet（6）, the coil Skeleton（3）Interior axial direction is provided with the air duct that at least twice are averagely arranged（7）, the rear end housing（4）It is provided with several in a ring The air inlet of arrangement, the air outlet（6）, fan（5）, air duct（7）It is interconnected with air inlet, all the air outlet（6） The sum of area be at least the nose shell（2）The sum of area of the half of gusset area, whole air inlets is at least institute State rear end housing（4）The half of radial section product.

3. bicycle seat adjustment gear case according to claim 2, it is characterised in that the nose shell（2）It is provided with spiral shell Pit（9）, the rear end housing（4）It is provided with and is threadedly coupled the threaded hole（9）Bolt（10）, after assembly, the coil bone Frame（3）It is clamped in the nose shell（2）With rear end housing（4）Between.

4. bicycle seat adjustment gear case according to claim 2 or 3, it is characterised in that the air duct（7）It is provided with Have six, all the air duct（7）Radial section product the sum of be at least the coil rack（3）The half of radial section product.

5. bicycle seat adjustment gear case according to claim 2, it is characterised in that the air inlet include bore according to Secondary increased first air inlet（8）, the second air inlet（11）With third air inlet（12）, first air inlet（8）Have several It is a and circularize arrangement, second air inlet（11）There are several and circularizes arrangement, the third air inlet（12）If having It does a and circularizes arrangement, the air inlets of three composition annular arrays are arranged in concentric circles.

6. bicycle seat adjustment gear case according to claim 1 or 2, it is characterised in that the transmission device further includes Spring bearing（28）And fixed frame（29）, the output shaft（27）Pass through the spring bearing（28）In be socketed in the fixed frame （29）On, the motor insertion is mounted on the fixed frame（29）It is interior.