CN1003361B

CN1003361B - Bearing for bicycle crank

Info

Publication number: CN1003361B
Application number: CN85102071.2A
Authority: CN
Inventors: 阿尔菲列德·哈因列赫·德恩
Original assignee: Individual
Current assignee: Individual
Priority date: 1984-11-14
Filing date: 1985-04-01
Publication date: 1989-02-22
Also published as: CN85102071A; GB2166810B; GB8506250D0; DE3441540A1; FR2573141B2; FR2573141A2; GB2166810A; IT8519973A0; IT1185089B; DE3441540C2

Abstract

The utility model provides a pedal crank bearing for bicycles. The utility model is applicable to drive devices with free wheel or reversal pedal firmware, namely, an improved pedal crank bearing by a simple means. Therefore, the utility model provides a pedal crank bearing with simple production and assembly as well as low cost; and an assembly device of pedal crank bearing for bicycles is provided, so as to make the assembly easier and get the most beneficial variation of the rolling bearing.

Description

Bearing for bicycle crank

The present invention is to be prerequisite with bicycle pedal crank bearing that existing bicycle pedal crank bearing and Deutsche Reichspatent 8305001 are introduced.

This existing pedal crank bearing is made up of the housing in the bearing sleeve of the pedal bearing of removably packing into, the pedal crank shaft that sprocket wheel is housed passes this housing, the convex shoulder that has two apart segment distances on the crank shaft in housing, they mutually away from the side constitute the raceway of bearing roller, and corresponding with the bearing track in being arranged on housing.

Rolling body rotatably is embedded between the raceway, and therefore for the adjust a bearing gap, the raceway that housing itself constitutes makes and can move axially and fix.Wherein, housing is made up of two housing parts that are jar shape basically, and the uncovered of them faces toward mutually, coaxially with being threaded.By the bottom inside that pedal crank shaft passes, have the rolling body raceway coaxial at them with crank shaft.For housing parts can be installed on the crank shaft, the structure that must adopt two pedal cranks removably to be fixed on the crank shaft forms.

Task of the present invention is, with the described pedal crank bearing of previous section in the simple method improvement present patent application specification sheets, the pedal crank shaft that has improved is promised and be can be applicable to have only a pedal crank is removably to be fixed on the crank shaft, and another pedal crank and crank shaft constitute the version of one non-dismountablely, thereby manufacturing and assembling are all simplified greatly, cost reduces.

This task is to solve by following measure;

A. on the crank shaft convex shoulder toward each other the side constitute raceway in the rolling body.

B. two housing parts are made tubularly, and their minimum diameter is greater than the convex shoulder of crank shaft, and the outer raceway of rolling body is positioned at each other the free end with the housing parts that is threaded.And

C. seal cover cap be enclosed within on the crank shaft and be embedded in crank shaft and toroidal cavity that bearing sleeve forms in.

Can make two to be set on the crank shaft by a free end of axle together with the housing parts that is threaded each other by these measures, so just no longer require two pedal cranks all will be detachably fixed on the crank shaft.And guaranteed after rolling body installs between the raceway, can wish the antifriction-bearing box gap that obtains by the housing parts adjustment that mutual usefulness is threaded, and can readjust where necessary.Realized also that simultaneously pedal crank shaft honours the sealing of the water smoke that splashes.

In order further to reduce manufacturing cost, housing parts all is book wall annular arrangement at whole length upper section, they mutually away from two ends have the zone that internal diameter has enlarged, its inboard has constituted the outer raceway of rolling body.Wherein housing parts can be processed into by pipeline section, thereby cheap, and expansion noted earlier district should be formed by the pipeline section expansion.

For adopt simple method make pedal bearing noted earlier can in bearing sleeve, accurately locate and the holding position constant, on the housing parts adjacent with sprocket wheel, and then internal diameter enlarges, and make an outwardly directed flange as the zone of the outer raceway of rolling body, this flanged shaft is to resting on the bearing sleeve end face that is adjacent.The expansion district of foregoing housing parts seamlessly places the inboard of bearing sleeve.Require the internal diameter expansion district of housing parts to surround cylindrical outward for this reason.Simple and well behaved especially cap structure form is, first lid is that a flange that surrounds bearing sleeve is arranged, and second lid has a connector bushing of putting into bearing sleeve with tight friction fit, connector bushing surrounds housing parts with its internal diameter and enlarges the district, and is very close to each other between them.In addition, second lid has an outwardly directed flange, and it rests on the bearing sleeve end face that is adjacent.First lid axially should lean against with its outer face on the sprocket wheel that is fixed in bent axle, and sprocket wheel and crank shaft are relative to not rotating.

Loosening with two housing parts that are threaded each other in order to prevent, a jam nut can be set.

Another reduction procedure is, a ring is contained in the housing parts adjacent with sprocket wheel, it is to pack at the hand of spiral that screws of another housing section, and be close to the tapped bore of admitting another housing parts, this ring is by the elasticity with great friction coefficient, toughness material, particularly plastics are made, and its hole is coaxial basically with tapped bore, and its internal diameter is less than the external diameter that is screwed into the external thread section of this ring on another housing parts.It is loosening with two housing parts that are threaded mutually to have adopted this measure to prevent, and needn't use jam nut.For easy to process, polygon is made in the outside of ring noted earlier, and the housing parts of packing into corresponding polygon district is in case spline is moving.

In addition, also have a feature, on the free end face of housing parts, be provided with the additional structure, particularly groove used for wrench away from sprocket wheel.Adopted this measure, permission is after pedal crank bearing is put into bearing sleeve, when the housing parts adjacent with sprocket wheel guarantees with friction-tight under its situation of not rotating at least, rotate another housing parts adjustment antifriction-bearing box gap by using with the corresponding instrument of groove in bearing sleeve.

In order further to simplify processing and cost-cutting, adjacent with sprocket wheel, and the housing parts with anti-DNA releaxed circular DNA adopts the deep-draw workpiece, and its axial length is more much smaller than another housing parts, and preferably making the housing parts adjacent with sprocket wheel and the axial length ratio of another housing parts is 1: 4.

In order further to guarantee to be contained in the pedal crank bearing invariant position in the bearing sleeve, to enlarge the district away from the internal diameter of the housing parts of sprocket wheel and make the end face that exceeds the bearing sleeve that is adjacent, and exceed the lid that is placed on the crank shaft free end, and has one section outside thread.A nut is spun on this outside thread, is pressed in indirectly on the bearing sleeve end face that is adjacent by lid.Surround crank shaft and on nut, be provided with, and play the seal ring of the effect of being tightly connected with it, but particularly direct forming on nut.

The scheme that has advantage in another case is, in the crankshaft end away from wheel, have one to surround crank shaft hermetically and be embedded in the housing parts that is adjacent and enlarge seal ring in the district, and this ring is positioned housing with friction-tight and enlarges and distinguish.

Solving the another kind of scheme that beginning offered the challenge is, the outside of pedal crank shaft convex shoulder is as the interior raceway of rolling body, and pedal crank bearing can be applied to have the power transmission of freely turning round or have the power transmission of the routine hub brake that freely turns round like this.In addition, it both had been applicable to the bearing sleeve of major diameter (about 40mm), and was used for the bearing sleeve of minor diameter (about 35mm).Its feature is as follows:

A. housing parts is made a jar shape basically, and uncovered mutually to directly, with being threaded with them.

B. the outer raceway of rolling body is located at the inboard of housing parts bottom.

C. housing parts bottom have with pedal crank shaft coaxial, and the hole of being passed by this crank shaft.

D. the internal diameter of first housing parts diameter that equals the crank shaft convex shoulder adjacent with pedal crank at least adds the diameter of two times of rolling bodys.

E. the maximum gauge of the diameter in hole greater than pedal crank shaft gone up in this first housing parts bottom.

F. this first housing parts and pedal crank and sprocket wheel are adjacent.

G. there is a sealing arrangement to be contained in crank shaft and the formed annular chamber of the first housing parts bottom outlet.

H. first housing parts can be on pedal crank shaft moves the diameter of an about rolling body from its control position to nondetachable pedal crank (105) direction.

Because the outside of pedal crankshaft convex shoulder constitutes raceway in the rolling body, the distance that two antifriction-bearing boxs are settled mutually is bigger than situation about mentioning in the past, therefore with had bigger pedal crank bearing bearing capacity under the condition of size equally in the past.At this moment, two housing parts can not have an end of crank to be set on the crank shaft from pedal crank shaft.This has also guaranteed position and the pedal crank shaft fgn sealing of rolling body between inside and outside raceway simultaneously.

In addition, in the described in front pedal crank bearing, the length of best first housing parts approximates 1/3rd of housing total length, be provided with internal thread hole at first housing parts, second housing parts has the external thread section that matches with aforementioned internal thread hole, and this external thread section screws in the aforementioned internal thread hole.Therefore, second housing parts has the external diameter littler than first housing parts on the one hand, on the other hand, when pedal crank bearing is put in the bearing sleeve, having an electric wire of toroidal cavity permission freely between the cylindrical bearing sleeve and second housing parts passes through, when making the assembling pedal crank bearing in bearing sleeve, electric wire does not sustain damage.

Being characterized as of favourable for this reason version surpasses on half the length of the second housing parts total length approximately at the second housing parts open-position-side, and its diameter has reduced with respect to base diameter.In addition, being threaded of housing parts is preferably with locking device.For example can adopt to be tightened in the second housing parts external thread section, and be pressed in the jam nut of the uncovered end face of first housing parts, constant to guarantee pack into the bearing space adjusted before the bearing sleeve of pedal bearing.Another structure with advantage is, two housing parts are made of plastics and can couple together to self-locking with screw thread mutually, can remove above-mentioned jam nut or similar structure like this from.

In addition, in another case, the outer raceway of rolling body also can form on the housing parts.

Yet be specially adapted to make the self-locking thread attaching parts in order to use those, and don't plastics with manufacturing characteristic that rolling bearing requires, also will guarantee to have very high task performance, the outer raceway of rolling body is by metal, and particularly the bearing shell of being made by hardened steel constitutes.This bearing shell is non-dismountable from the housing parts.

For the assembling that makes foregoing pedal crank bearing easily and in order to make the sealing arrangement adjacent be in correct position with non-removable crank, and can maintain for a long time, favourable version axially can move for the sealing arrangement on the pedal crank shaft is fixed on first housing parts in friction-tight.Sealing arrangement has the flange that leans against the first housing parts bottom outside of a special shaping, has outside one hood-shapedly on flange, wraps in the flange on first housing parts.First housing parts has a sweptback side in bottom range, flange is crushed on and surrounds sweptback side on first housing parts.

Assemble foregoing pedal crank bearing, available simple especially equipment.It has a cylindrical bar, is provided with the registration device coaxial with pedal crank shaft on it, and the free end of pedal crank shaft and its are removably coupled together.And the length of bar will equal the length of second housing parts at least, and the external diameter of bar should be made an appointment with the diameter of young waiter in a wineshop or an inn's rolling body than the minimum diameter of second housing parts, and the diameter that is greater than the second housing parts base apertures on the other hand deducts a rolling body diameter.

Embodiments of the invention are further described as shown in drawings below: wherein

Fig. 1 is the longitudinal section of pedal crank bearing;

Fig. 2 is the longitudinal section of pedal crank bearing another program;

Fig. 3 is the part sectional view of another embodiment

Fig. 4 is the longitudinal section of the 4th kind of scheme of pedal crank bearing;

Fig. 5 and Fig. 6 are pedal crank bearing shown in Figure 4 partial view at different assembling stages,

In all embodiment of Fig. 1 to Fig. 3, removably be contained in the bearing sleeve 1 by two

tubular shell parts

2 and 3 housings of being formed, pedal crank shaft 4 passes this housing, an end of crank shaft have one non-disconnectable, Gu dead pedal crank 5.In addition, a sprocket wheel 6 is fixed on the pedal crank shaft 4, and they are relative to not rotating.The other end of pedal crank shaft 4 can existing mode be fixed the pedal crank that another does not illustrate in the drawings, and they be relative to can not rotating, but can take apart.

Housing parts 2 has a tapped bore 7 towards the end of housing parts 3, and housing parts 3 has the outside thread 8 that matches with tapped bore 7 towards the end of housing parts 2.Outside thread 8 is screwed in the tapped bore 7.In the embodiment shown in fig. 1, this adjustable being threaded should be with a known mechanism, as locking with a jam nut.Have the annular arrangement cross section at two, on the relatively thin

tubular shell part

2 and 3 of wall mutually away from the end, internal diameter is extended.This inboard that enlarges district 9 constitutes the outer raceway 10 of rolling body.The outside that enlarges district 9 becomes cylindrical.

Have two on the crank shaft 4 at axial convex shoulder 11 separated by a distance, they toward each other the side constitute raceway 12 in the rolling body.The spherical rolling body 13 of between

raceway

10 and 12, packing into.Process a radially outer flange 14 in the expansion district 9 of housing parts 2, it leans against on the end face of the bearing sleeve 1 that is adjacent.The external diameter in the expansion district 9 of housing parts 2 is close on the inboard of bearing sleeve 1, and is very close to each other between them.

In addition, also have two

lids

15 and 16 that are loaded on the crank shaft 4.Lid processes one on 15 and covers bearing sleeve 1, and with the flange 17 of its formation labyrinth-type excluder, cover and axially be supported on the sprocket wheel 6 with its outer face.Lid 16 is made of plastics, and it has one section connector bushing 18, inserts the outside that enlarges district 9 with the inboard and the housing parts 3 of bearing sleeve 1 in the bearing sleeve 1 and seamlessly matches.Lid 16 also processes a flange 19, and it is close proximity on the end face of the bearing sleeve 1 that is adjacent.

Housing parts

2 and 3 is processed by cylindrical pipeline section, and expansion district 9 is thereon formed by the tube section ends hole enlargement.Rolling

body raceway

10 and 12 has surfaces hardened.

For the assembling pedal crankshaft bearing, at first two

partial shell

2 and 3 are screwed in mutually together, after lid 15 installs on the crank shaft 4, the housing that assembles is equally also installed on the crank shaft 4 then, again rolling body 13 is installed between raceway 10 and 12.Here housing parts 2 and the 3 beginning degree of tightening mutually must make the space that enlarges between district 9 and the convex shoulder 11 be enough to rolling body packed into to go in raceway 10 and 12.Then

housing parts

2 and 3 is turned on outwardly away from each other, reached desired numerical value until the antifriction-bearing box gap.At last, only this assembled unit need be installed in the bearing sleeve 1 and cover end cap 16.

In Fig. 2 and pedal crank bearing shown in Figure 3, the expansion district 9 of housing parts 3 has exceeded the free end of bearing sleeve 1, and an external thread section 20 is arranged.Nut 21 removably is screwed on the outside thread 20 and is pressed in the free end of bearing sleeve 1 by covering 16 with tight friction fit.

In addition, in housing parts 2, tightened up a ring that is made of plastics 22 by tapped bore 7, it is coaxial with tapped bore 7, and has the little hole of nominal diameter of circular ratio thread segment 8.The free end that housing parts 3 has external thread section 8 is screwed into tight friction fit in the hole of ring 22, and wherein the thread of external thread section 8 is flexibly clamp-oned ring 22 corresponding parts, prevents that thus the housing parts that gets up with thread connection mutually from becoming flexible.For anti-stop ring 22 rotates, the outside of ring makes polygon, and packs into from the expansion district 9 of housing parts on the housing parts 2 the corresponding polygon section.

From considering that economically housing parts 3 is formed by the deep-draw of disk blank, housing 3 axial lengths should be lacked as much as possible like this, make the leftover pieces of making the disk blank few as far as possible.

In addition, two enlarge housing 1 part between the district 9 around, be provided with polygonal wrench operated face, on the wherein described in front housing parts 2, this peripheral polygon should be located in the scope at ring 22 places of embedding.

For in pedal crank bearing shown in Figure 2, also can the antifriction-bearing box away from sprocket wheel be sealed, adopted one to be set on the crank shaft 4 and to be embedded in seal ring 23 in the expansion district 9 of housing 3, it and crank shaft 4 and enlarge district 9 and keep good sealing, and be fixed on friction-tight and enlarge in the district 9.

According to Fig. 3, on nut 21, made one surround the seal ring 23 that crank shaft 4 seals ', for seal ring 23 ' on form annular, flexible sealing lip limit, can be with nut 21 and seal ring 23 ' be made of plastics together.

It all is the pedal crank bearing that removably is fixed on the crank shaft 4 that the present invention also can be applicable to two pedal cranks.The convex shoulder 11 of crank shaft is fixed on the crank shaft after also can be pre-processed again.

Press Fig. 4, one assembles in advance, complete pedal crank bearing assembly set installs in the columniform bearing sleeve 101, this assembly set is the housing that

housing parts

102 and 103 jar shape, that have the annular arrangement cross section fits together basically by two and constitutes, and crank shaft 104 passes this housing vertically.

Crank 105 is installed on an end of pedal crank shaft 104 non-dismountablely, have on this crank one coaxial with crank shaft 104, and die from sprocket wheel 106 on the crank shaft admittedly.

Housing parts

102 and 103 assembles uncoveredly, couples together in order to make this two section axial, is provided with an internal thread hole 107 on housing parts 102, and is provided with the external thread section 108 that matches with tapped bore 107 in the outside of housing parts 103.External thread section 108 is screwed in the tapped bore 107, and its axial location can be regulated.

The inner bottom part of each housing parts has constituted the outer raceway 110 of rolling body.On pedal crank shaft 104, have two convex shoulders 111 in a certain distance apart from one another, their lateral surface has constituted the interior raceway 112 of rolling body.The spherical rolling body 113 of between inside and

outside raceway

110 and 112, packing into, they circumferentially and with raceway have certain free gap, and wherein the free gap can be adjusted by turning two

housing parts

102 and 103 mutually before pedal crank bearing is put into bearing sleeve 101.

The housing parts 102 adjacent with pedal crank 105 and sprocket wheel 106 put in the bearing sleeve 101 with tight sliding fit, and it also has a flange that radially outward stretches out 114, and this flange leans against on the end face of the bearing sleeve 101 that is adjacent.

Approximately than the wall thickness of little one to the two times of bearing sleeve 101 of internal diameter of bearing sleeve 101, housing parts 103 has uniform gap to the maximum gauge of housing parts 103 on the whole circumference and between the wall of bearing sleeve 101.For housing parts 103 is fixed in the bearing sleeve 101, promptly radially fixing, in the toroidal cavity that between bearing sleeve 101 and housing parts 103, forms with the tight friction fit connector bushing 118 of packing into.

Make a flange that radially outward stretches out 119 on connector bushing 118, it leans against on the end face of the bearing sleeve 101 that is adjacent, and has limited the degree of depth in the connector bushing threading bearing sleeve.

For housing axially also can be fixed in bearing sleeve 101, be provided with an outside thread district 120 in the outer end of housing parts 103, nut 121 is screwed to the top of it and is pressed on the flange 119.On nut 121, have one and surround pedal crank shaft 104, seal ring 123 zero-lash with it.Seal ring 123 forms on the nut 121 that is formed by plastic working.

Bottom in

housing parts

102 and 103 has the

hole

124 or 125 coaxial with housing parts.The hole 124 of housing parts 102 is greater than the maximum gauge of pedal crank shaft 104, and housing parts 102 can be set on the crank shaft through the convex shoulder on the crank shaft 111 from the free end of pedal crank shaft 104 like this.

The sealing arrangement 126 of packing in the no convex shoulder district of pedal crank shaft 104 and hole 124 formed annular spaces, it is supported in the hole 124 with friction-tight and on the pedal crank shaft 104.A flange 127 is arranged on tubular sealing arrangement 126, and this flange leans against on the outer face of housing parts 102, and a flange 128 is arranged, and it encases outer the placing of flange 114 back segments.

Sealing arrangement 126 is by elastomeric material, and for example rubber or plastics are made, and flange 128 is to translate on the flange 114 under the effect of the tight power of elastic pre-tensioning.Another kind of situation, sealing arrangement 126 also can be formed a closed-loop jointly by two parts, for example is made of metal the part that sealing arrangement 126 can not the be out of shape toroidal cavity noted earlier of also packing into.

For mounting

shell body portion

102 and 103 and rolling body 113, at first place vertically upward with a crankless end by Fig. 5 pedal crank shaft 104.Then sealing arrangement 126 is put on the pedal crank shaft 104, till it comes to sprocket wheel 106.Again 102 ends of housing parts, installed on the pedal crank shaft 104 forward, and couple together with sealing arrangement 126.Pack rolling body 113 in the housing parts 102 this moment.

In order to make rolling body can pass through the convex shoulder 111 of pedal crank shaft 104 adjacent thereto, the internal diameter of housing parts 102 should add two times rolling body diameter greater than the diameter of aforementioned convex shoulder 111 on the one hand, and housing parts 102 should move the distance of an about rolling body diameter from the control position shown in Fig. 4 to the direction of sprocket wheel 106 and pedal crank 105 on the other hand.After this, housing parts 102 moves up, at this moment rolling body 113 must be placed between the inside and outside raceway of rolling body, and passes through the friction locking unit of housing parts 102, temporarily housing parts 102 is remained on should have on the position with respect to pedal crank shaft 104 by sealing arrangement 126.

Auxiliary rigging equipment is preferably adopted in subsequent assembling, and it mainly is made of the bar 129 of a vertical fixing, and the length of bar will equal the length of housing parts 103 at least.Housing parts 103 is set on the bar 129 with the bottom forward.The diameter of bar 129 is than the diameter of the about young waiter in a wineshop or an inn's rolling body of minimum diameter of housing parts 103.The diameter of bar 129 must deduct the diameter of a rolling body greater than the diameter in hole 125 in addition, makes the rolling body 113 impassabitity holes 125 of the housing parts 103 of packing into from the top like this.

As shown in Figure 6 with the free end and bar 129 co-axially aligns of pedal crank shaft 104, for example removably link together afterwards in the mode of pegging graft with bar.Again housing parts 103 is upwards moved on on the pedal crank shaft 104, and be connected with screw thread with housing parts 102.At last housing is pulled down from bar 129, and best bearing space before packing bearing sleeve 101 into, is adjusted housing.

This external demand satisfies another condition, and promptly the minimum diameter of housing parts 103 should not have the diameter of that end convex shoulder 111 of crank greater than pedal crank shaft 104.

For making bearing sleeve 101 in-to-in zone lines have big as far as possible toroidal cavity, so that electric wire, the electric wire of using as taillight can pass therethrough, allow the length of housing parts 102 approximate 1/3rd of housing length overall on the one hand, and the diameter of the open-position-side cylindrical tail portion 130 of housing parts 103 has reduced on the other hand with respect to housing parts 103 bottom side portions.At this moment, the length of afterbody 130 approximates half of housing parts 103 length.

Obtained the bicycle pedal crank bearing by this way, it is not only applicable to the transmission of freely turning round, also be applicable to transmission with backpedalling brake, and famous " BSA-pedal crank bearing " adjusts element owing to can not lock the antifriction-bearing box gap fully, can only be applied to the transmission of freely turning round, to having the transmission of backpedalling brake, so-called thomson-pedal crank bearing has certain superiority, but compare with the BSA-pedal crank bearing, it requires to have the bigger bearing sleeve of internal diameter.

Claims

1, the pedal crank bearing of bicycle, it is made up of the housing in the bearing sleeve that removably is contained in pedal bearing, the pedal crank shaft that sprocket wheel is housed passes this housing, the convex shoulder that has two apart segment distances on the crank shaft in housing, they are as the interior raceway of rolling body, the outer raceway that is provided with in its position and the housing is corresponding, in rolling body is positioned over, between the outer raceway, housing is formed by being contained in two parts that link together coaxially with screw thread each other in the bearing sleeve, housing parts has the rolling body outer raceway coaxial with housing, it is characterized in that:

A. on two convex shoulders (11) of crank shaft (4) toward each other the side constituted raceway in the rolling body (12),

B. two housing parts (2 and 3) become tubular, and their minimum diameter is greater than the diameter of the convex shoulder (11) of crank shaft, and the outer raceway (10) of rolling body is positioned at the free end of the housing parts (2 and 3) that mutual usefulness is threaded,

C. sealing arrangement (15 and 16) is enclosed within on the crank shaft (4), seals up by crank shaft (4) and the formed annular chamber of bearing sleeve (1).

2, pedal crank bearing according to claim 1, it is characterized by, the cross section of housing parts (2 and 3) on its whole length all is annular arrangement, wall is very thin, they mutually away from free end be processed into the zone (9) that one section internal diameter has enlarged, the inboard in this expansion district has constituted the outer raceway (10) of rolling body.

3, pedal crank bearing according to claim 2, it is characterized by, on the close housing parts (2) of sprocket wheel one side, enlarged and constituted the adjacent place, expansion district (9) of the outer raceway (10) of rolling body with internal diameter, processed a radially outer flange (14), it is on the end face that axially rests on the bearing sleeve (1) that is adjacent.

4, pedal crank bearing according to claim 2 is characterized by, and the internal diameter of housing parts (2 and 3) enlarges the outside, district (9) and constitutes cylindrical.

5, according to each described pedal crank bearing of claim, it is characterized by, first lid (15) has a flange (17) that surrounds bearing sleeve (1).

6, pedal crank bearing according to claim 5 is characterized by, and first lid (15) leans against on the sprocket wheel (6) that is loaded on crank shaft (4) with its outer face.

7, pedal crank bearing according to claim 6, it is characterized by, second lid (16) has one and is contained in the bearing sleeve, and locate connector bushing (18) on it with friction-tight at least, the internal diameter that connector bushing has surrounded housing parts enlarges district (9), and is very close to each other between them.In addition, second lid (16) also has an outwardly directed flange (19), and it rests on the end face of the bearing sleeve that is adjacent.

8, pedal crank bearing according to claim 7, it is characterized by, a ring (22) is contained in the housing parts (2) adjacent with sprocket wheel (6), it is to pack at the hand of spiral that screws of another housing parts (3), and be close to and admit the externally threaded tapped bore of another housing parts (7), this ring is that especially plastics are made by the elasticity with great friction coefficient, toughness material.The endoporus of ring is coaxial basically with tapped bore (7) at least, and its internal diameter is less than on another housing parts (3), the external diameter of external thread section (8), and this outside thread matches with this ring endoporus with friction-tight.

9, pedal crank bearing according to claim 8 is characterized by, and polygon is made in foregoing ring (22) outside, and is contained in housing parts (2) polygon corresponding with it zone.

10, according to each the described pedal crank bearing among the claim 1-4, it is characterized by, upward be provided with the additional structure of using for wrench, particularly groove on the free end face away from sprocket wheel (6) at housing parts (3).

11, pedal crank bearing according to claim 5 is characterized by, and upward is provided with the additional structure of using for wrench, particularly groove on the free end face away from sprocket wheel (6) at housing parts (3).

12, pedal crank bearing according to claim 6 is characterized by, and upward is provided with the additional structure of using for wrench, particularly groove on the free end face away from sprocket wheel (6) at housing parts (3).

13, pedal crank bearing according to claim 7 is characterized by, and upward is provided with the additional structure of using for wrench, particularly groove on the free end face away from sprocket wheel (6) at housing parts (3).

14, pedal crank bearing according to claim 8 is characterized by, and upward is provided with the additional structure of using for wrench, particularly groove on the free end face away from sprocket wheel (6) at housing parts (3).

15, pedal crank bearing according to claim 9 is characterized by, and upward is provided with the additional structure of using for wrench, particularly groove on the free end face away from sprocket wheel (6) at housing parts (3).

16, pedal crank bearing according to claim 9 is characterized by, and housing parts (2) adjacent with sprocket wheel (6) and that binding ring (22) are housed is made the deep-draw workpiece, and its axial length is shorter than another housing parts (3).

17, pedal crank bearing according to claim 16 is characterized by, and the housing parts (2) adjacent with sprocket wheel (6) is about 1: 4 with the axial length ratio of another housing parts (3).

18, pedal crank bearing according to claim 6, it is characterized by, the end face that has exceeded the bearing sleeve (1) that is adjacent away from the zone (9) of housing parts (3) the free end enlarged-diameter of sprocket wheel (6), and exceed the lid (16) that is positioned on crank shaft (4) free end, and it has outside thread (20), nut (21) be tightened on it above, and be pressed in the end face of the bearing sleeve (1) that is adjacent by lid (16).

19, pedal crank bearing according to claim 18 is characterized by, and is provided with one and surrounds the seal ring (23 ') that crank shaft (4) plays the effect of sealing crank shaft on nut (21), particularly forms on the nut body.

20, according to the described pedal crank bearing of claim 6, it is characterized by, being provided with one at crank shaft (4) away from the end of sprocket wheel (6) surrounds crank shaft (4) and seals, and the seal ring (23) in the housing parts expansion district (9) that is adjacent of packing into, this ring is positioned housing with friction-tight and enlarges in the district.

21, the pedal crank bearing of bicycle is made up of the housing in the bearing sleeve that is contained in pedal bearing, this connection is a detouchable, a pedal crank shaft passes this housing, have two convex shoulders separated by a distance on the crank shaft in housing, have on the convex shoulder as two of the rolling body raceway mutually away from the side, corresponding with the raceway position in being located at housing, interior, laid rolling body between the outer raceway, for the adjust a bearing gap, rolling body raceway on the housing makes axially can be adjusted and can tighten up, housing is by being a jar shape basically, and form with two housing parts that their uncovered one side is joined to one another with screw thread coaxially, housing parts passes the bottom of pedal crank shaft, and the inboard has the rolling body outer raceway coaxial with crank shaft, it is characterized in that:

A. the internal diameter of first housing parts (102) diameter that should equal the crank shaft convex shoulder (111) adjacent with non-disconnectable pedal crank (105) at least adds two times of a rolling body diameter;

B. on first housing parts (102) bottom the diameter in hole (124) greater than the maximum gauge of pedal crank shaft (104);

C. first housing parts (102) is adjacent with pedal crank (105) and sprocket wheel (106), and pedal crank and pedal crank shaft (104) constitute a non-disconnectable integral body;

D. first housing parts (102) can move the distance of an about rolling body (113) diameter from control position to non-disconnectable pedal crank (105) direction on pedal crank shaft (104).

22, pedal crank bearing according to claim 21 is characterized by, and a uncovered side of second housing parts (103) is in accounting for half zone (130) of total length.Diameter has dwindled with respect to this housing parts bottom.

23, pedal crank bearing according to claim 21 is characterized by, and being threaded of housing parts has locking device.

24, pedal crank bearing according to claim 22 is characterized by, and being threaded of housing parts has locking device.

25, according to any one the described pedal crank bearing in the claim 21 to 24, it is characterized by, be provided with the outer raceway (110) of rolling body at housing parts (102,103).

26, according to any one the described pedal crank bearing in the aforementioned claim 21 to 24, a sealing arrangement has been installed in the hole of first housing parts, it is characterized by, the sealing (126) on the pedal crank shaft (104) is arranged to axially can friction-tight move.

27, pedal crank bearing according to claim 25 has been installed a sealing arrangement in the hole of first housing parts, it is characterized by, and the sealing (126) on the pedal crank shaft (104) is arranged to axially can friction-tight move.

28, pedal crank bearing according to claim 26, it is characterized by, sealing arrangement (126) has the flange (127) that leans against first housing parts (102) bottom outside of a special shaping, on flange, have outside one hood-shapedly, wrap in the flange (128) on first housing parts (102).

29, pedal crank bearing according to claim 27, it is characterized by, sealing arrangement (126) has the flange (127) that leans against first housing parts (102) bottom outside of a special shaping, on flange, have outside one hood-shapedly, wrap in the flange (128) on first housing parts (102).

30, pedal crank bearing according to claim 28, it is characterized by, first housing parts (102) has a sweptback side in bottom range, flange (128) is crushed on first housing parts (102) and surrounds sweptback side.

31, pedal bearing according to claim 29 is characterized by, and first housing parts (102) has a sweptback side in bottom range, and flange (128) is crushed on first housing parts (102) and surrounds sweptback side.

32, the equipment according to any one described pedal bearing of claim 21 to 31 noted earlier is installed, is it is characterized by, have a cylindrical bar (129), on it, be provided with and the coaxial registration device of pedal crank shaft (104); The free end of pedal crank shaft (104) and its are removably coupled together.And the length of bar (129) will equal the length of second housing parts (103) at least, and the external diameter of bar should be made an appointment with the diameter of young waiter in a wineshop or an inn's rolling body (113) than the minimum diameter of second housing parts (103).The diameter that is greater than second housing parts (103) base apertures (25) on the other hand deducts a rolling body diameter.