CN207029464U - One kind is ridden equipment and its Middle shaft assembly - Google Patents

Abstract

One kind is the utility model is related to ride equipment and its Middle shaft assembly, wherein, the Middle shaft assembly includes bearing unit, wave pad and locking unit；Bearing unit includes two bearings, and two bearings are socketed on axis and are located at the both ends of frame five-through correspondingly；Locking unit is located at side of the bearing unit away from chain wheel, for locking axial location of two bearings along axis；Wave pad is located at locking unit towards the side of bearing unit.The Middle shaft assembly, its is simple in construction, is easy to be controlled bearing prepressing force in volume production, avoids due to precompressed tension so that the smooth degree that bearing rotates is affected, and then reduces crank resistance suffered in rotation process, being easy to user to ride.

Description

One kind is ridden equipment and its Middle shaft assembly

Technical field

The utility model belongs to bicycle accessories technical field, and in particular to one kind is ridden equipment and for equipment of riding Middle shaft assembly.

Background technology

The advantages that due to the cheap, light of bicycle, energy-saving and environmental protection, bicycle is as a kind of light, work of efficiently riding instead of walk Tool, it is very popular always, in particular with deepening continuously for the theories such as Green Travel in recent years, low-carbon environment-friendly, in addition The popularization of shared bicycle, convenience is provided for the go off daily of people, increasing people starts selection cycling trip. Therefore, the demand of bicycle and yield are also lifted therewith.

Bicycle middle shaft is one of most important parts of bicycle, and as the core bearing unit part of bicycle, it is determined The conversion of the driving force of fixed whole bicycle.But in the prior art, Middle shaft assembly include set gradually locking nut, first Bearing casting die, clutch shaft bearing, two bottom bracket axles, second bearing, the second bearing casting die for being fixed on frame five-through both ends, wherein, Second bearing casting die is located at towards the side of chain wheel, and clutch shaft bearing casting die and second bearing casting die are equipped with and axis outside The internal thread that the screw thread of wall is adapted, when mounted, one end towards chain wheel side of the Middle shaft assembly pass through second bearing casting die Internal thread realize and fix that the other end is to carry out big torsion two-bolt lock to clutch shaft bearing by clutch shaft bearing casting die and locking nut Tightly with the stability of guarantee installation.But such a structure there may be the axial compressive force tension of bearing, bearing rotate smooth degree by Influence so that resistance of the crank in rotation process is excessive, and user is ridden and brought inconvenience.

Middle shaft assembly can suitably be adjusted by debugging, to balance stability and the bearing that the Middle shaft assembly is installed Axial compressive force, and then resistance of the crank in rotation process is reduced while mounting stability is ensured, but debugging process can be bright It is aobvious to reduce production efficiency, it can not be realized in volume production.

Utility model content

The utility model aims to provide one kind and ridden equipment and its Middle shaft assembly, and its is simple in construction, and it is right in volume production to be easy to Bearing prepressing force is controlled, and is avoided due to precompressed tension so that the smooth degree that bearing rotates is affected, and then reduces crank and exist Suffered resistance, is easy to user to ride in rotation process.

To achieve the above object, Middle shaft assembly provided by the utility model includes bearing unit, wave pad and locking Unit；The bearing unit includes two bearings, and two bearings are socketed on the axis and are located at correspondingly The both ends of frame five-through；The locking unit is located at side of the bearing unit away from chain wheel, for locking two axles Hold the axial location along the axis；The wave pad is located at the locking unit towards the side of the bearing unit.

When locking unit is locked to two bearings of bearing unit, wave pad will also be pressurized, the ripple after compression Unrestrained pad will deform, and operating personnel can determine the precompressed of bearing according to the deformation for the wave pad being observed visually Whether situation, which meets, is required, locking torque value can also be set according to the elastic force of wave pad, and according to the locking torque value Bearing is locked.Because the structure of wave pad is simple and observation is convenient, it is easy in volume production carry out bearing locking Control, avoid the occurrence of because coupling mechanism force is excessive so that the smooth degree that bearing rotates is affected, and then reduces crank due to locking Resistance suffered in rotation process caused by power, is easy to user to ride.

In addition, the wave pad in compressive state has the trend for the state that affranchises, in use, even Play occurs for position of the locking unit on axis, and the wave pad can also ensure the locking unit to bearing within the specific limits The fixation of two bearings in unit, do not influence to use.

Alternatively, the bearing unit includes clutch shaft bearing casting die, the first sealed bearings, the first axis set gradually Set, the second bottom bracket axle, the second sealed bearings and second bearing casting die, the clutch shaft bearing casting die are located at towards the locking unit Side.The clutch shaft bearing casting die and the inner ring of first sealed bearings are radially fixed, and the second bearing casting die is provided with The internal thread being adapted with the screw thread of the lateral wall of the axis, and it is radially fixed with the inner ring of second sealed bearings.

Alternatively, the bearing unit include set gradually clutch shaft bearing casting die, first axle shelves, the first ball, first Bottom bracket cup, the second bottom bracket cup, the second ball and the second axle shelves, the clutch shaft bearing casting die are located at towards the one of the locking unit Side.The first axle shelves, first ball and first bottom bracket cup form the first pearl shelves bearing, the second axle shelves, institute State the second ball and form the second pearl shelves bearing with second bottom bracket cup.The clutch shaft bearing casting die and the first axle shelves footpath To fixation, the madial walls of the second axle shelves is provided with the internal thread being adapted with the external screw thread of the axis, and it is with described the Two axle shelves are radially fixed.

Alternatively, the clutch shaft bearing casting die is between the locking unit and the wave pad.

Alternatively, the locking unit direction is that one end of bearing unit is provided with annular projection, and the annular projection passes through The wave pad forms the clutch shaft bearing casting die.

Alternatively, the locking unit includes locking nut and lock screw；The locking nut is radially provided with and opened Mouthful, and two end faces of the opening stretch out provided with two latch correspondingly respectively, on each latch It is coaxially provided with the through hole being adapted with the lock screw.

Alternatively, the one end of the locking nut away from the bearing unit is provided with least one set of parallel and is oppositely arranged Planar structure.

Alternatively, the locking unit also includes ring flat-plate, and the ring flat-plate is fixed on the locking nut towards the bearing One end of unit, the ring flat-plate is towards being additionally provided with groove on the end face of the bearing unit side, the wave pad and described One end end of the direction locking unit of bearing unit can be located in the groove.

Equipment provided by the utility model of riding includes Middle shaft assembly as described above.

The equipment of riding is provided with the above-mentioned Middle shaft assembly with wave pad, and wave pad is easy in volume production when mounted Bearing locking is controlled, avoided the occurrence of because coupling mechanism force is excessive so that the smooth degree that bearing rotates is affected, and then drops The crank of the low equipment of riding is the resistance suffered in rotation process caused by coupling mechanism force, and being easy to user to ride, this is ridden Row equipment.

Alternatively, the equipment of riding is bicycle or shared bicycle.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art.

Fig. 1 is the structure for the installment state that the bearing unit of the utility model embodiment has the Middle shaft assembly of sealed bearings Schematic diagram；

Fig. 2 is the explosive view of the Middle shaft assembly in Fig. 1；

Fig. 3 is the explosive view for the Middle shaft assembly that bearing unit has pearl shelves bearing；

Fig. 4 is the explosive view of the locking unit of the utility model embodiment.

In accompanying drawing 1-4, reference is as follows：

101- clutch shaft bearing casting dies, the sealed bearings of 102- first, the bottom bracket axles of 103- first, the bottom bracket axles of 104- second, 105- Second sealed bearings, 106- second bearing casting dies, 107- first axle shelves, the balls of 108- first, the bottom bracket cups of 109- first, 110- Two bottom bracket cups, the balls of 111- second, 112- the second axle shelves；

2- wave pads；

3- locking units, 31- locking nuts, 32- lock screws, 33- latch, 331- through holes, 34- annular projections, 35- Groove, 36- ring flat-plates；

4- frame five-throughs；5- cranks；6- chain wheels；7- axis.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.

Refer to the attached drawing 1-4, Fig. 1 are the peaces that the bearing unit of the utility model embodiment has the Middle shaft assembly of sealed bearings The structural representation of dress state；Fig. 2 is the explosive view of the Middle shaft assembly in Fig. 1；Fig. 3 is that bearing unit has in pearl shelves bearing The explosive view of shaft assembly；Fig. 4 is the explosive view of the locking unit of the utility model embodiment.

In a kind of embodiment, the Middle shaft assembly that the utility model embodiment is provided includes bearing unit, ripple Unrestrained pad 2 and locking unit 3.Wherein, bearing unit includes two bearings, and two bearings are socketed on axis 7 and one by one It is correspondingly located at the both ends of frame five-through 4.Locking unit 3 is used to lock axial location of two bearings along axis 7, the locking list Member 3 is located at the bearing unit side relative with chain wheel direction, and wave pad 2 is arranged on locking unit 3 towards bearing unit Side.

When locking unit 3 is locked to two bearings of bearing unit, wave pad 2 will also be pressurized, after compression Wave pad 2 will deform, and operating personnel can determine bearing according to the deformation for the wave pad 2 being observed visually Whether precompressed situation, which meets, requires, locking torque value can also be set according to the elastic force of wave pad 2, and turn round according to the locking Square value is locked to bearing.Because the structure of wave pad 2 is simple and observation is convenient, it is easy in volume production to bearing locking It is controlled, avoids the occurrence of because coupling mechanism force is excessive so that smooth degree the problem of being affected that bearing rotates, and then reduce bent Handle 5 is easy to user to ride the resistance suffered in rotation process caused by coupling mechanism force.

In addition, the wave pad 2 in compressive state has the trend for the state that affranchises, in use, even if It is that play occurs for position of the locking unit 3 on axis 7, the wave pad 2 can also ensure the locking unit 3 within the specific limits Fixation to two bearings in bearing unit, do not influence to use.

In the above-described embodiments, two bearings in bearing unit can be that sealed bearings can also be pearl shelves bearing.

When two bearings in bearing unit are sealed bearings, as depicted in figs. 1 and 2, the bearing unit include according to The clutch shaft bearing casting die 101 of secondary setting, the first sealed bearings 102, the first bottom bracket axle 103, the sealing of the second bottom bracket axle 104, second Bearing 105 and second bearing casting die 106, wherein, clutch shaft bearing casting die 101 is located at towards the side of locking unit 3.

First bottom bracket axle 103 and the second bottom bracket axle 104 are socketed on axis 7, and are pressed correspondingly from both sides respectively Enter the both ends of frame five-through 4, i.e., the outer ring of two sealed bearings is fixed with frame five-through 4.Second bearing casting die 106 be provided with The internal thread that the screw thread of the lateral wall of axis 7 is adapted, the i.e. bearing unit are towards the side of chain wheel 6 by the second bearing casting die 106 fix.When locking unit 3 locks the bearing unit from the side relative with chain wheel 6, clutch shaft bearing casting die 101 and second Bearing pressure subtracts 106 and fixed with the relative position of axis 7, also, the inner ring of the sealed bearings 102 of clutch shaft bearing casting die 101 and first Radially fixed, second bearing casting die 106 and the inner ring of the second sealed bearings 105 are radially fixed, that is to say, that now bearing unit The inner rings of two sealed bearings fixed with axis 7.And then it can realize that axis 7 is rotated in frame five-through 4.

When two bearings in bearing unit are pearl shelves bearings, as shown in figure 3, the bearing unit includes setting gradually Clutch shaft bearing casting die 101, first axle shelves 107, the first ball 108, the first bottom bracket cup 109, the second bottom bracket cup 110, second rolling The axle shelves 112 of pearl 111 and second.Wherein, clutch shaft bearing casting die 101 is located at towards the side of locking unit 3.First axle shelves 107, One ball 108 and the first bottom bracket cup 109 form the first pearl shelves bearing, the second axle shelves 112, the second ball 111 and the second bottom bracket cup 110 form the second pearl shelves bearing.

First bottom bracket cup 109 and the second bottom bracket cup 110 are pressed into frame five-through 4 from both ends correspondingly respectively, i.e., and first The outer ring of pearl shelves bearing and the second pearl shelves bearing is fixed with frame five-through 4.The madial wall of second axle shelves 112 is provided with and axis 7 The internal thread that external screw thread is adapted, i.e. the second axle shelves 112 consolidate the relative position of the bearing unit and axis 7 from chain wheel side It is fixed, when locking unit 3 locks the first pearl shelves bearing and the second pearl shelves bearing, clutch shaft bearing casting die 101 and first axle shelves 107 It is radially fixed, that is to say, that the relative position of the axle shelves 112 of first axle shelves 107 and second and axis 7 is fixed, equivalent to the first pearl The inner ring of shelves bearing and the second pearl shelves bearing is fixed with axis 7, and then can realize that crank 5 drives axis 7 in frame five-through 4 Rotated.

In the above-described embodiments, for ease of observation locking unit 3 sealed bearings are carried out with precompressed locking situation, can be by wave Pad 2 is arranged between clutch shaft bearing casting die 101 and locking unit 3, and it is single that clutch shaft bearing casting die 101 can also be arranged to locking Between member 3 and wave pad 2.It is contemplated that locking unit 3 may drive the wave with its joint during locking Pad 2 produces friction, and drives the wave pad 2 to rotate by the friction, and the wave pad 2 and first axle pressure-bearing rotated Certain friction is there may be between part 101, wave pad 2 can be caused to wear, influences its intensity and service life.

Therefore, in the present embodiment, clutch shaft bearing casting die 101 is arranged between locking unit 3 and wave pad 2, this When, wave pad 2 is located between the sealed bearings 102 of clutch shaft bearing casting die 101 and first, or the wave pad 2 is located at first Between bearing casting die 101 and first axle shelves 107.Locking unit 3 is during locking, the clutch shaft bearing casting die with its joint 101 may rotate under the drive of frictional force, and now, the clutch shaft bearing casting die 101 will drive the first sealed bearings 102 Inner ring or first axle shelves 107 together rotate, and are held on the sealed bearings 102 of clutch shaft bearing casting die 101 and first or first axle Wave pad 2 between shelves 107 will also rotate therewith, and avoid producing rubbing and it is caused to damage, ensure that it was being used Intensity and service life in journey.

In the above-described embodiments, annular projection 34 is additionally provided with the side of locking unit 3 towards bearing unit, the ring-type is convex Play 34 and may pass through the formation clutch shaft bearing of wave pad 2 casting die 101.That is, by clutch shaft bearing casting die 101 with annular projection 34 Form be arranged on the end face of locking unit 3, as shown in figure 3, when bearing is pearl shelves bearing, the annular projection 34 may pass through The wave pad 2 and first axle shelves 107 are radially fixed.Likewise, when bearing is sealed bearings, the annular projection 34 may pass through Wave pad 2 and the inner ring of the first sealed bearings 102 are radially fixed.Certainly, in the present embodiment, clutch shaft bearing casting die 101 can To be independent structure, as depicted in figs. 1 and 2, it is located between locking member and wave pad 2, to realize to clutch shaft bearing Inner ring fixation.Comparatively speaking, on locking unit 3 provided with annular projection 34 scheme comparatively, without being separately provided Clutch shaft bearing casting die 101, parts can be reduced, simplify structure and mounting process.

In the above-described embodiments, as shown in figure 4, locking unit 3 includes locking nut 31 and lock screw 32, wherein, lock Tight nut 31 is radially provided with opening, and two end faces being open stretch out provided with two latch correspondingly respectively 33, the through hole 331 being adapted with lock screw 32 is coaxially provided with each latch 33.When the locking nut 31 is along axis 7 When axis direction is locked to bearing unit, judge whether its locking situation meets to want according to the deformation of wave pad 2 Ask, when meeting that locking requires, lock screw 32 is locked the locking nut 31 by the through hole 331 on two latch 33, It is secured on axis 7, avoids the wave washer 2 in compressive state because it affranchises caused by the trend of state Thrust, cause the locking nut 31 along shaft position to occur play.Wherein, torsion is added in fastening that can be to lateral lock screw 32 It is required that.

Certainly, in the present embodiment, the locking unit 3 can also only be set to common locking nut bearing is locked Tightly, and after locking nut locking, one stop nut is set again in side of the locking nut away from bearing unit, the stop nut The axial location of locking nut can be limited, avoid the wave washer 2 in compressive state due to its state that affranchises Trend caused by thrust, cause locking nut in use along axis 7 axis direction occur play.Using lateral The locking unit 3 of locking is for the scheme locked using two nuts, in installation process, without considering positioned at outer The situation that the stop nut of side can interfere with crank, meanwhile, the scheme laterally locked can also avoid generation stop nut from existing Apply axial compressive force to bearing unit again during being locked to locking nut, cause the situation of bearing axial compressive force tension.

In the above-described embodiments, for convenience of being rotated to locking nut 31 on axis 7, its pre-pressing function is realized, is locked The lateral wall of the side relative with bearing unit of tight nut 31 is provided with one group of planar structure that is parallel and being oppositely arranged, to lead to Cross instrument to exert a force to it, realize the rotation to locking nut 31.Wherein, corresponding torsion may be configured as according to wave pad Locking torque value set by 2 elastic force.

Certainly, the planar structure that is parallel and being oppositely arranged can also be set to two groups, such as square or multigroup, and such as outer six Corner structure, furthermore it is also possible to the end set in the locking nut 31 has a counterbore, the parallel and planar structure that is oppositely arranged Located at the madial wall of counterbore, such as squared counter bore or interior hexagonal counterbore.

In the above-described embodiments, as shown in Fig. 2 can also be set in the end face towards bearing unit side of locking unit 3 Fluted 35, in other words circumferentially arranged with flange, flange is internally formed groove 35, and the depth of the groove 35 is enough to accommodate wave pad The end of piece 2 and bearing unit, but the side wall (or flange) of the groove will not be with such as the first bottom bracket axle of the part in bearing unit 103 or first bottom bracket cup 109 etc. interfere.The groove 35 can seal to the end of bearing unit during use, keep away Exempt from dust entrance.The structure setting of the groove 35 is simple and can effectively maintain the cleannes in the bearing unit, avoids making for a long time Used time frequently need to be cleared up it, or has debris to enter the service life for influenceing bearing.

In the above-described embodiments, as shown in figure 4, locking unit 3 also includes ring flat-plate 36, the ring flat-plate 36 is located at locking nut 31 Towards the side of bearing unit, above-mentioned groove 35, annular projection 34 are on the ring flat-plate 36.Certainly, it is being not provided with ring flat-plate 36 In the case of, groove 35 and annular projection 34 can be set directly at locking nut 31 towards on the end face of bearing unit side, but Allow for the floor space of groove 35 and its depth requirements, the scheme being disposed on ring flat-plate 36 is relative to being directly arranged in For scheme on locking nut 31, the requirement to locking nut 31 is lower, it is easier to realizes.

In another embodiment, the utility model embodiment additionally provides one kind and ridden equipment, and this, which is ridden, sets It is standby to include that there is the Middle shaft assembly of wave pad 2 as described above.Wherein, the equipment of riding can be that people are used in everyday common Bicycle or shared bicycle, wherein, people's ordinary bicycle used in everyday includes city car, folded bicycle and mountain Ground car etc..

Wave pad 2 is easy to be controlled bearing locking in volume production when mounted, avoids the occurrence of due to coupling mechanism force mistake The big smooth degree for make it that bearing rotates is affected, and then reduces the crank of the equipment of riding and turning caused by coupling mechanism force Suffered resistance during dynamic, it is easy to user to ride the equipment of riding.

In description of the present utility model, term " first ", " second " be only used for describe purpose, and it is not intended that instruction or Imply relative importance or the implicit quantity for indicating indicated technical characteristic.In addition, unless otherwise clear and definite regulation and limit It is fixed, fisrt feature second feature " upper " or " under " can be that the first and second features directly contact, or the first and second features Pass through intermediary mediate contact.

Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims (10)

1. a kind of Middle shaft assembly, it is characterised in that including bearing unit, wave pad (2) and locking unit (3)；

The bearing unit includes two bearings, and two bearings are socketed on the axis (7) and correspond status In the both ends of frame five-through (4)；

The locking unit (3) is located at side of the bearing unit away from chain wheel (6), for locking two bearings along institute State the axial location of axis (7)；

The wave pad (2) is located at the locking unit (3) towards the side of the bearing unit.

2. Middle shaft assembly according to claim 1, it is characterised in that the bearing unit includes the first axle set gradually Pressure part (101), the first sealed bearings (102), the first bottom bracket axle (103), the second bottom bracket axle (104), the second sealed bearings (105) and second bearing casting die (106), the clutch shaft bearing casting die (101) are located at the side towards the locking unit (3)；

The inner ring of the clutch shaft bearing casting die (101) and first sealed bearings (102) is radially fixed, the second bearing pressure Part (106) is provided with the internal thread being adapted with the screw thread of the lateral wall of the axis (7), and itself and second sealed bearings (105) inner ring is radially fixed.

3. Middle shaft assembly according to claim 1, it is characterised in that the bearing unit includes the first axle set gradually Pressure part (101), first axle shelves (107), the first ball (108), the first bottom bracket cup (109), the second bottom bracket cup (110), second Ball (111) and the second axle shelves (112), the clutch shaft bearing casting die (101) are located at the side towards the locking unit (3)；

The first axle shelves (107), first ball (108) and first bottom bracket cup (109) form the first pearl shelves bearing, The second axle shelves (112), second ball (111) and with second bottom bracket cup (110) formed the second pearl shelves bearing；

The clutch shaft bearing casting die (101) and the first axle shelves (107) are radially fixed, the inner side of the second axle shelves (112) Wall is provided with the internal thread being adapted with the external screw thread of the axis (7), and it is radially fixed with the second axle shelves (112).

4. the Middle shaft assembly according to Claims 2 or 3, it is characterised in that the clutch shaft bearing casting die (101) is positioned at described Between locking unit (3) and the wave pad (2).

5. the Middle shaft assembly according to Claims 2 or 3, it is characterised in that locking unit (3) direction is bearing unit One end be provided with annular projection (34), the annular projection (34) forms the first axle pressure-bearing through the wave pad (2) Part (101).

6. according to the Middle shaft assembly described in claim any one of 1-3, it is characterised in that the locking unit (3) includes locking Nut (31) and lock screw (32)；

The locking nut (31) is radially provided with opening, and two end faces of the opening are respectively correspondingly to extension Stretch and be provided with two latch (33), be coaxially provided with each latch (33) be adapted with the lock screw (32) it is logical Hole (331).

7. Middle shaft assembly according to claim 6, it is characterised in that the locking nut (31) is away from the bearing unit One end be provided with planar structure that is at least one set of parallel and being oppositely arranged.

8. Middle shaft assembly according to claim 7, it is characterised in that the locking unit (3) also includes ring flat-plate (36), institute State ring flat-plate (36) and be fixed on the locking nut (31) towards one end of the bearing unit, the ring flat-plate (36) is towards the axle Groove (35), the direction locking of the wave pad (2) and the bearing unit are additionally provided with the end face of bearing unit side One end end of unit can be located in the groove (35).

The equipment 9. one kind is ridden, it is characterised in that including the Middle shaft assembly as described in claim any one of 1-8.

10. equipment according to claim 9 of riding, it is characterised in that the equipment of riding is bicycle or shared bicycle.