CN207814338U - Bicycle freewheel - Google Patents
Bicycle freewheel Download PDFInfo
- Publication number
- CN207814338U CN207814338U CN201820209747.1U CN201820209747U CN207814338U CN 207814338 U CN207814338 U CN 207814338U CN 201820209747 U CN201820209747 U CN 201820209747U CN 207814338 U CN207814338 U CN 207814338U
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- axle sleeve
- housing
- core
- flywheel
- bicycle freewheel
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Abstract
The utility model is related to bicycle freewheels, including flywheel body, flywheel body includes housing, fly core, it is very heavy, very heavy spring and multilayer rolling bearing, fly in-core in the pilot hole of housing, the external tooth for being useful for connecting with chain is uniformly distributed on the outer ring surface of housing, it is evenly distributed with ratchet on the inner ring surface of housing, it is very heavy to be hinged on the outer ring surface of winged core, with ratchet engagement, multilayer rolling bearing includes internal layer axle sleeve, outer layer axle sleeve and the intermediate axle sleeve of at least one layer being arranged between outer layer axle sleeve and internal layer axle sleeve, it is separately installed with rolling member between every two layers adjacent of axle sleeve, wherein, outer layer axle sleeve is embedded in a manner of winged core can be followed to rotate in the pilot hole of winged core.Flywheel structure provided by the utility model is simple, compared to freewheel, and the velocity of rotation as driven wheel faster, is installed more laborsaving when the cycling of the bicycle freewheel.
Description
Technical field
The utility model is related to bicycle accessories fields, more particularly, to a kind of bicycle freewheel.
Background technology
Bicycle freewheel is mounted in the colyliform accumulator having compared with large rotating inertia on bicycle rear axle.Work as bicycle
When rear wheel rotation speed increases, the kinetic energy of bicycle freewheel increases, and energy storage or saving is got up；When bicycle rear rotating speed reduces, from
The kinetic energy of driving flywheel is reduced, and energy is released, and is had appropriate rotary inertia, is played storage and release kinetic energy
Revolving member can advance with motor car wheel and freely reverse idle running, can have a rest power indirectly.
However, the problem that bicycle freewheel generally existing velocity of rotation in the prior art is slow.
Utility model content
The utility model is to propose in view of the above problems, and its purpose is to provide one kind capable of accelerating travel speed,
Make more effortless bicycle freewheel of riding.
To realize that the purpose of this utility model adopts the following technical scheme that.
The utility model of technical solution 1 is a kind of bicycle freewheel, including flywheel body.
The flywheel body includes housing, fly core, is very heavy, very heavy spring and multilayer rolling bearing.
The housing and the winged core are respectively formed as the annular with respective pilot hole, and the winged in-core is embedded in institute
State the inside of the pilot hole of housing.
The external tooth for being useful for connecting with chain is uniformly distributed on the outer ring surface of the housing, in the inner ring surface of the housing
On be evenly distributed with ratchet.
It is described very heavy to be hinged on pawl on the outer ring surface of the winged core.
One end of the very heavy spring is connect with the outer ring surface of the winged core, and the other end of the very heavy spring very heavy is supported with described
Connect, under the action of the very heavy spring, it is described it is very heavy can be with the ratchet engagement.
The multilayer rolling bearing includes multilayer bearing bush, and axle sleeve includes internal layer axle sleeve, outer layer axle sleeve and setting described in multilayer
The intermediate axle sleeve of at least one layer between the outer layer axle sleeve and the internal layer axle sleeve, between every two layers adjacent of axle sleeve
It is separately installed with rolling member, wherein the outer layer axle sleeve is embedded in the winged core in a manner of it can follow the winged core rotation
The inside of pilot hole.
Along the central axial direction of the winged core, with the top that one end of the winged core is the flywheel body, with described
The other end for flying core is the bottom of the flywheel body.
It is covered with flywheel at the position between the housing and the internal layer axle sleeve at the top of the flywheel body
Head cover is provided with the bearing seal end cap that can cover the multilayer rolling bearing in the bottom of the flywheel body.
In addition, the bicycle freewheel of technical solution 2, in the bicycle freewheel of technical solution 1, in every two layers adjacent of institute
State the rolling member retainer being also separately installed between axle sleeve for separating each rolling member.
In addition, the bicycle freewheel of technical solution 3, in the bicycle freewheel of technical solution 2, in every two layers adjacent of institute
The position positioned at the top side of the rolling member and the position positioned at the bottom side of the rolling member stated between axle sleeve are also installed respectively
There is sealing ring.
In addition, the bicycle freewheel of technical solution 4, in the bicycle freewheel of technical solution 1, in the flywheel head cover
And/or the oil filler point for injecting lubricating oil to the rolling member is provided on the bearing seal end cap.
In addition, the bicycle freewheel of technical solution 5, in the bicycle freewheel of technical solution 1, in the flywheel head cover
And/or it is provided with locating groove on the bearing seal end cap.
In addition, the bicycle freewheel of technical solution 6, in the bicycle freewheel of technical solution 1, the outer layer axle sleeve and institute
Winged core is stated to be fixedly connected.
In addition, the bicycle freewheel of technical solution 7, in the bicycle freewheel of technical solution 1, in the assembly of the housing
The position positioned at the top side of the ratchet and the bottom side of the ratchet of the annular surface in hole, is respectively arranged with the dress along the housing
The annular surface of distribution multiple steel bowls that circumferentially shape is distributed, steel ball is separately installed in the inside of each steel bowl.
In addition, the bicycle freewheel of technical solution 8, in the bicycle freewheel of technical solution 7, in the assembly of the housing
The position positioned at the top side of the ratchet and the bottom side of the ratchet of the annular surface in hole is also respectively provided with each for separating
The steel ball retainer of the steel ball.
In addition, the bicycle freewheel of technical solution 9, in the bicycle freewheel of technical solution 1, the flywheel head cover and institute
It states and is spirally connected at the top of internal layer axle sleeve, the bottom of the bearing seal end cap and the internal layer axle sleeve is spirally connected.
In addition, the bicycle freewheel of technical solution 10, in the bicycle freewheel of technical solution 1, along from the flywheel sheet
The direction that the top of body extends to the bottom of the flywheel body, the external tooth have at least two layers, and/or, fly along from described
The direction that the top of wheel ontology extends to the bottom of the flywheel body, the ratchet have at least two layers.
Compared with the slow problem of bicycle freewheel generally existing velocity of rotation in the prior art, the utility model has such as
Lower advantageous effect.
According to the utility model of technical solution 1, a kind of bicycle freewheel is provided comprising flywheel body and flywheel lid.
Flywheel body includes housing, fly core, is very heavy, very heavy spring and multilayer rolling bearing.
Housing and winged core are respectively formed as the annular with respective pilot hole, and winged in-core is embedded in the pilot hole of housing
It is internal.It is uniformly distributed the external tooth for being useful for connecting with chain on the outer ring surface of housing, is uniformly distributed on the inner ring surface of housing
There is ratchet.Very heavy is the pawl being hinged on the outer ring surface of winged core.One end of very heavy spring is connect with the outer ring surface of winged core, very heavy spring
The other end abutted with very heavy, under the action of very heavy spring, it is very heavy can be with ratchet engagement.Multilayer rolling bearing includes multilayer axis
Set, multilayer bearing bush include among internal layer axle sleeve, outer layer axle sleeve and at least one layer that is arranged between outer layer axle sleeve and internal layer axle sleeve
Axle sleeve is separately installed with rolling member between every two layers adjacent of axle sleeve, wherein outer layer axle sleeve is can follow winged core to rotate
Mode is embedded in the inside of the pilot hole of winged core.
Along the central axial direction for flying core, using one end of winged core as the top of flywheel body, the other end to fly core is winged
The bottom for taking turns ontology, flywheel head cover is covered at the position between housing and internal layer axle sleeve at the top of flywheel body,
The bottom of flywheel body is provided with the bearing seal end cap that can cover multilayer rolling bearing.
Its working principle is that：When riding, foot-operated when stepping on forward, chain-driving housing rotates forward, at this moment, the spine of housing
Tooth is engaged with very heavy, and the rotatory force of housing passes to winged core by very heavy, flies the outer layer axle sleeve turn that core ribbon moves multilayer rolling bearing
It is dynamic, and pass to intermediate axle sleeve and internal layer axle sleeve successively by rolling member, finally, rear axle rotation is driven by internal layer axle sleeve；When stopping
When only trampling, chain and housing do not rotate, and trailing wheel still drives rear axle to rotate forward under effect of inertia, drive multilayer rolling
The internal layer axle sleeve of dynamic bearing rotates, and passes to intermediate axle sleeve and outer layer axle sleeve successively by rolling member, drive as a result, fly core and
Very heavy to rotate forward, when very heavy top slides into the tooth top of ratchet, very heavy spring is compressed at most, continues to slide, it is very heavy just by
Very heavy spring bounces back into the root portion of ratchet, sends out " rattling away " sound, waits for that sound disappears, can continue to ride.
In the utility model, the application of the structure of multilayer rolling bearing can become the sliding friction between rear axle and winged core
For rolling friction, to when trampling foot-operated, improve the transmission efficiency of flywheel, and then improve rear wheel rotation speed；Meanwhile with installation
Common bicycle freewheel is compared, and the whole sensitivity of bicycle freewheel can be improved, and is reduced in initial procedure of riding and be should be flywheel
The starting force of offer；In addition, kinetic energy rejection when rubbing between rear axle and winged core can be reduced, the accumulation of energy work(of flywheel entirety is improved
Can, extension is had a rest the power time indirectly, is ridden more effortless.
According to the utility model of technical solution 2, also it is separately installed between every two layers adjacent of axle sleeve each for separating
The rolling member retainer of a rolling member, has the following advantages that：1. guiding and rolling member being driven to be rolled on correct raceway；②
Rolling member is equally spaced, it collides with each other and rubs between rolling member when being distributed on the circumference of raceway to prevent work；3. will
Rolling member is together with sleeve combination, to prevent rolling member from falling off.
According to the utility model of technical solution 3, the portion positioned at the top side of rolling member between every two layers adjacent of axle sleeve
The position of position and the bottom side of rolling member is also separately installed with sealing ring, can prevent external sand and dust to rolling by sealing ring as a result,
Part causes to wear.
According to the utility model of technical solution 4, it is provided on flywheel head cover and/or bearing seal end cap for rolling
Part injects the oil filler point of lubricating oil, can fully keep the lubrication between rolling member as a result, improve the velocity of rotation of rolling member, avoid
Corrosion etc. occurs.
According to the utility model of technical solution 5, it is provided with locating groove on flywheel head cover and/or bearing seal end cap,
The installation site of the bicycle freewheel can be accurately determined by the locating groove as a result, to carry out Fast Installation to flywheel.
According to the utility model of technical solution 6, outer layer axle sleeve is fixedly connected with winged core, can be improved as a result, outer layer axle sleeve with
Fly the rotation consistency between core.
According to the utility model of technical solution 7, the pilot hole of housing annular surface positioned at the top side of ratchet and ratchet
Bottom side position, multiple steel bowls of the annular surface of the pilot hole along housing circumferentially shape distribution are respectively arranged with, in each steel
The inside of bowl is separately installed with steel ball, and the sliding friction between housing and winged core can be changed into rolling by steel ball as a result, rubs
It wipes, to reduce the frictional dissipation between housing and winged core, improve riding speed.
According to the utility model of technical solution 8, the pilot hole of housing annular surface positioned at the top side of ratchet and ratchet
The position of bottom side be also respectively provided with the steel ball retainer for separating each steel ball, to be guided by steel ball retainer
And each steel ball is driven to be rolled respectively with the one-to-one steel bowl of each steel ball, avoid steel ball from falling off from steel bowl, meanwhile,
It prevents from colliding with each other and rubbing between steel ball when work.
According to the utility model of technical solution 9, be spirally connected at the top of flywheel head cover and internal layer axle sleeve, bearing seal end cap with it is interior
The bottom of layer axle sleeve is spirally connected, as a result, ensure flywheel head cover and bearing seal end cap respectively with the top of internal layer axle sleeve and internal layer
The bottom of axle sleeve is close-connected simultaneously, is conducive to carry out fast assembling-disassembling to flywheel head cover and bearing seal end cap.
According to the utility model of technical solution 10, along the side extended from the top of flywheel body to the bottom of flywheel body
To, external tooth has at least two layers, and/or, along the direction extended from the top of flywheel body to the bottom of flywheel body, ratchet tool
Have at least two layers.
It can ensure connection and transmission between housing and winged core by the structure of multilayer ratchet and very heavy, very heavy spring as a result,
Stability.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the internal structure schematic diagram for the first embodiment for indicating bicycle freewheel provided by the utility model.
Fig. 2 is the external structure schematic diagram for the first embodiment for indicating bicycle freewheel provided by the utility model.
Fig. 3 is the mounting structure schematic diagram for the first embodiment for indicating bicycle freewheel provided by the utility model.
Fig. 4 is the mounting structure one for the second embodiment for indicating bicycle freewheel provided by the utility model.
Fig. 5 is the mounting structure two for the second embodiment for indicating bicycle freewheel provided by the utility model.
Reference numeral：1- housings；2- flies core；3- is very heavy；The very heavy springs of 4-；51- internal layer axle sleeves；52- outer layer axle sleeves；In 53-
Between axle sleeve；54- rolling members；6- oil filler points；7- locating grooves；8- brake block installation points.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
According to the overall structure of bicycle freewheel provided by the utility model, following several specific embodiments can be divided into.
First embodiment
Fig. 1 is the internal structure schematic diagram for the first embodiment for indicating bicycle freewheel provided by the utility model.Fig. 2 is
Indicate the external structure schematic diagram of the first embodiment of bicycle freewheel provided by the utility model.
As depicted in figs. 1 and 2, which includes flywheel body.
Wherein, flywheel body includes housing 1, flies core 2, is very heavy 3, very heavy spring 4 and multilayer rolling bearing.
It is specific as follows：
Housing 1 and winged core 2 are respectively formed as the annular with respective pilot hole, and fly the assembly that core 2 is embedded in housing 1
The inside in hole；The external tooth for being useful for connecting with chain is uniformly distributed on the outer ring surface of housing 1, on the inner ring surface of housing 1
It is even that ratchet is distributed with；Very heavy 3 be the pawl being hinged on the outer ring surface of winged core 2, the outer ring surface of one end of very heavy spring 4 and winged core 2
Connection, the other end of very heavy spring 4 is abutted with very heavy 3, and under the action of very heavy spring 4, very heavy 3 can be with ratchet engagement；Multilayer is rolled
Dynamic bearing includes multilayer bearing bush, and multilayer bearing bush includes internal layer axle sleeve 51, outer layer axle sleeve 52 and is arranged in outer layer axle sleeve 52 and internal layer
Four layers of intermediate axle sleeve 53 between axle sleeve 51, are separately installed with rolling member 54, wherein outer layer between every two layers adjacent of axle sleeve
Axle sleeve 52 is embedded in the inside of the pilot hole of winged core 2 in a manner of winged core 2 can be followed to rotate；Edge flies the central axial direction of core 2,
Using one end of winged core 2 as the top of flywheel body, using the other end of winged core 2 as the bottom of flywheel body, on the top of flywheel body
The position between housing 1 and internal layer axle sleeve 51 in portion is covered with flywheel head cover, and being provided in the bottom of flywheel body can
Cover the bearing seal end cap of multilayer rolling bearing.
Further, the rolling for separating each rolling member 54 is also separately installed between every two layers adjacent of axle sleeve
Part retainer (not shown).
Further, between every two layers adjacent of axle sleeve positioned at the top side of rolling member 54 position and positioned at roll
The position of the bottom side of part 54 is also separately installed with sealing ring (not shown).
In addition, being separately provided for injecting the note of lubricating oil to rolling member 54 on flywheel head cover and bearing seal end cap
Oilhole 6.
In addition, being respectively arranged with locating groove 7 on flywheel head cover and bearing seal end cap.
In addition, outer layer axle sleeve 52 is fixedly connected with winged core 2.
In addition, the position positioned at the top side of ratchet and the bottom side of ratchet of the annular surface in the pilot hole of housing 1, sets respectively
Annular surface multiple steel bowls (not shown) that circumferentially shape is distributed along the pilot hole of housing 1 are equipped with, in the inside points of each steel bowl
Steel ball is not installed.
Further, in the annular surface of the pilot hole of housing 1 positioned at the position of the top side of ratchet and the bottom side of ratchet also
It is separately provided for separating the steel ball retainer (not shown) of each steel ball.
In addition, flywheel head cover and the top of internal layer axle sleeve 51 are spirally connected, the bottom spiral shell of bearing seal end cap and internal layer axle sleeve 51
It connects.
Second embodiment
On the basis of first embodiment, along the direction extended from the top of flywheel body to the bottom of flywheel body, if
It sets external tooth and ratchet is respectively provided at least two layers.
For example, along the direction extended from the top of flywheel body to the bottom of flywheel body, external tooth and ratchet difference are set
With two layers, also, correspondingly, the position of very heavy and very heavy spring is configured.
It should be strongly noted that in above-mentioned specific implementation mode, the very heavy quantity on every layer can be such as figure institute
Show 6 or for 2,3,7,8 or it is any other be more than 1, and no more than the integer of ratchet quantity.
Also, in above-mentioned specific embodiment, the form of rolling member is not limited, can be ball or needle roller or
The diversified forms such as rolling machine part.
The structure of two kinds of specific implementation modes of bicycle freewheel provided by the utility model is illustrated above, below
Its operation principle and mounting structure are illustrated.
Its working principle is that：When riding, foot-operated when stepping on forward, chain-driving housing rotates forward, at this moment, the spine of housing
Tooth is engaged with very heavy, and the rotatory force of housing passes to winged core by very heavy, flies the outer layer axle sleeve turn that core ribbon moves multilayer rolling bearing
It is dynamic, and pass to intermediate axle sleeve and internal layer axle sleeve successively by rolling member, finally, rear axle rotation is driven by internal layer axle sleeve；When stopping
When only trampling, chain and housing do not rotate, and trailing wheel still drives rear axle to rotate forward under effect of inertia, drive multilayer rolling
The internal layer axle sleeve of dynamic bearing rotates, and passes to intermediate axle sleeve and outer layer axle sleeve successively by rolling member, drive as a result, fly core and
Very heavy to rotate forward, when very heavy top slides into the tooth top of ratchet, very heavy spring is compressed at most, continues to slide, it is very heavy just by
Very heavy spring bounces back into the root portion of ratchet, sends out " rattling away " sound, waits for that sound disappears, can continue to ride.
First embodiment mounting structure
Fig. 3 is the mounting structure schematic diagram for the first embodiment for indicating bicycle freewheel provided by the utility model.
As shown in figure 3, the bicycle freewheel is installed on a tire, indicate that the tire of the bicycle freewheel is installed with A1
The multilayer rolling bearing of point, the bicycle freewheel is installed in the middle part of tire, also, on the outer layer axle sleeve 52 of multilayer rolling bearing
It is provided with brake block installation point 8.
Second embodiment mounting structure one
Fig. 4 is the mounting structure one for the second embodiment for indicating bicycle freewheel provided by the utility model.
As shown in figure 4, the bicycle freewheel is installed on a tire, indicate that the tire of the bicycle freewheel is installed with A2
The multilayer rolling bearing of point, the bicycle freewheel is installed in the middle part of tire, and two layers of external tooth is made to be respectively arranged at the both sides of tire, and
And it is provided with brake block installation point 8 on the outer layer axle sleeve 52 of multilayer rolling bearing.
Second embodiment mounting structure two
Fig. 5 is the mounting structure two for the second embodiment for indicating bicycle freewheel provided by the utility model.
As shown in figure 4, the bicycle freewheel is installed on two tires disposed in parallel, this is indicated voluntarily with A3 and A4 respectively
Two tire installation points of vehicle flywheel, the multilayer rolling bearing of the bicycle freewheel are installed on the middle part of two tires, make two layers
External tooth is set to the middle part of two tires, also, is provided with brake block installation point on the outer layer axle sleeve 52 of multilayer rolling bearing
8。
In the utility model, the application of the structure of multilayer rolling bearing can become the sliding friction between rear axle and winged core
For rolling friction, to when trampling foot-operated, improve the transmission efficiency of flywheel, and then improve rear wheel rotation speed；Meanwhile with installation
Common bicycle freewheel is compared, and the whole sensitivity of bicycle freewheel can be improved, and is reduced in initial procedure of riding and be should be flywheel
The starting force of offer；In addition, kinetic energy rejection when rubbing between rear axle and winged core can be reduced, the accumulation of energy work(of flywheel entirety is improved
Can, extension is had a rest the power time indirectly, is ridden more effortless.
In addition, in above-mentioned specific implementation mode, also it is separately installed between every two layers adjacent of axle sleeve for dividing
Every the rolling member retainer of each rolling member, have the following advantages that：1. guiding and rolling member being driven to be rolled on correct raceway
It is dynamic；2. rolling member is equally spaced, it collides with each other and rubs between rolling member when being distributed on the circumference of raceway to prevent work；
3. by rolling member together with sleeve combination, to prevent rolling member from falling off.
In addition, in above-mentioned specific implementation mode, between every two layers adjacent of axle sleeve positioned at the top side of rolling member
Position and be also separately installed with sealing ring positioned at the position of the bottom side of rolling member, external sand can be prevented by sealing ring as a result,
Dirt causes to wear to rolling member.
In addition, in above-mentioned specific implementation mode, it is separately provided on flywheel head cover and bearing seal end cap
The oil filler point that lubricating oil is injected to rolling member, can fully keep the lubrication between rolling member as a result, improve the rotation speed of rolling member
Degree avoids that corrosion etc. occurs.
In addition, in above-mentioned specific implementation mode, is covered in flywheel head cover and bearing seal and be respectively arranged with positioning card
Slot can accurately determine the installation site of flywheel, to carry out Fast Installation to flywheel by the locating groove as a result,.
In addition, in above-mentioned specific implementation mode, outer layer axle sleeve is fixedly connected with winged core, and outer layer axis can be improved as a result,
Rotation consistency between set and winged core.
In addition, in above-mentioned specific embodiment, the pilot hole of housing annular surface positioned at the top side of ratchet and spine
The position of the bottom side of tooth is respectively arranged with annular surface multiple steel bowls that circumferentially shape is distributed of the pilot hole along housing, each
The inside of steel bowl is separately installed with steel ball, the sliding friction between housing and winged core can be changed into rolling by steel ball as a result,
Friction, to reduce the frictional dissipation between housing and winged core, improve riding speed.
In addition, in above-mentioned specific embodiment, the pilot hole of housing annular surface positioned at the top side of ratchet and spine
The position of the bottom side of tooth is also respectively provided with the steel ball retainer for separating each steel ball, to be drawn by steel ball retainer
It leads and each steel ball is driven to be rolled respectively with the one-to-one steel bowl of each steel ball, avoid steel ball from falling off from steel bowl, together
When, it prevents from colliding with each other and rubbing between steel ball when work.
In addition, in above-mentioned specific implementation mode, it is spirally connected at the top of flywheel head cover and internal layer axle sleeve, bearing seal end cap
Be spirally connected with the bottom of internal layer axle sleeve, as a result, ensure flywheel head cover and bearing seal end cap respectively with the top of internal layer axle sleeve and
The bottom of internal layer axle sleeve is close-connected simultaneously, is conducive to carry out fast assembling-disassembling to flywheel head cover and bearing seal end cap.
In addition, in above-mentioned specific implementation mode, along what is extended from the top of flywheel body to the bottom of flywheel body
Direction, is arranged external tooth and ratchet is respectively provided at least two layers.
It can ensure connection and transmission between housing and winged core by the structure of multilayer ratchet and very heavy, very heavy spring as a result,
Stability.
In addition, in above-mentioned specific implementation mode, the concrete structure of the utility model is illustrated, but it is unlimited
In this.
For example, in above-mentioned specific implementation mode, the intermediate bearing of setting multilayer rolling bearing has four layers, but not
It is limited to this, which can also have one or two layers or three layers or five layers or at least one layer of more layers, can be achieved
Said effect, and increasing with the number of plies, ride is more laborsaving, and riding speed is also faster.
In addition, in above-mentioned specific implementation mode, it is separately provided on flywheel head cover and bearing seal end cap
The oil filler point of lubricating oil is injected to rolling member.
But not limited to this, and above-mentioned oil filler point can not also be arranged, but by the multilayer rolling bearing assembly according to certainly
The structure of lubrication bearing is designed, and opens up hole respectively on the working face of each layer axle sleeve, and added admittedly in each hole
Body lubricant, to realize lubricating function.
Alternatively, being formed as only opening up the structure of above-mentioned oil filler point on bearing seal end cap.
In addition, in above-mentioned specific implementation mode, positioning is respectively arranged on flywheel head cover and bearing seal end cap
Card slot.
But not limited to this, and above-mentioned locating groove can not also be arranged, but other labels is used to complete assembly work.
And in the case where the locating groove is arranged, can also be that above-mentioned locating groove is only set on flywheel head cover,
Either, above-mentioned locating groove is only set on bearing seal end cap, Fast Installation is carried out to flywheel as long as can realize
Function.
In addition, in above-mentioned specific implementation mode, along what is extended from the top of flywheel body to the bottom of flywheel body
Direction, is arranged external tooth and ratchet is respectively provided at least two layers.
But not limited to this, can also be, along the direction extended from the top of flywheel body to the bottom of flywheel body, only
Only setting external tooth has at least two layers, and either, edge is from the top of flywheel body to the direction of the bottom of flywheel body extension, only
Only setting ratchet has at least two layers, either, external tooth is arranged and ratchet is respectively provided with one layer, above-mentioned acceleration work(can be achieved
Energy.
In addition, in above-mentioned specific implementation mode, also it is separately installed between every two layers adjacent of axle sleeve for dividing
Every the rolling member retainer of each rolling member.
But not limited to this, and above-mentioned rolling member retainer can not also be arranged, be equally reached and rolled using multilayer
Bearing assembly realizes acceleration, labour-saving function, still, according to the structure in specific implementation mode, above-mentioned rolling member is arranged and protects
Frame is held, is had the following advantages that：1. guiding and rolling member being driven to be rolled on correct raceway；2. by rolling member it is equidistant every
It opens, collides with each other and rub between rolling member when being distributed on the circumference of raceway to prevent work；3. by rolling member and sleeve combination
Together, to prevent rolling member from falling off.
In addition, in above-mentioned specific implementation mode, between every two layers adjacent of axle sleeve positioned at the top side of rolling member
Position and be also separately installed with sealing ring positioned at the position of the bottom side of rolling member,
But not limited to this, and above-mentioned sealing ring can not also be arranged, and is equally reached and utilizes multilayer rolling bearing group
Part realizes that acceleration, labour-saving function still according to the structure in specific implementation mode, are arranged above-mentioned sealing ring, as a result, may be used
Prevent external sand and dust from causing to wear to rolling member by sealing ring.
In addition, in above-mentioned specific embodiment, the pilot hole of housing annular surface positioned at the top side of ratchet and spine
The position of the bottom side of tooth is respectively arranged with annular surface multiple steel bowls that circumferentially shape is distributed of the pilot hole along housing, each
The inside of steel bowl is separately installed with steel ball, and but not limited to this, can not also be arranged above-mentioned steel bowl and steel ball, and only by
Multilayer rolling bearing assembly realizes that acceleration, labour-saving function still according to the structure in specific implementation mode, are arranged above-mentioned
Steel bowl and steel ball can be turned the sliding friction between housing and winged core by steel ball on the basis of multilayer rolling bearing assembly
Become rolling friction, to reduce the frictional dissipation between housing and winged core, further improve riding speed.
In addition, in above-mentioned specific embodiment, the pilot hole of housing annular surface positioned at the top side of ratchet and spine
The position of the bottom side of tooth is also respectively provided with the steel ball retainer for separating each steel ball.
But not limited to this, and above-mentioned steel ball retainer can not also be arranged, and is equally reached and utilizes the multilayer axis of rolling
Bearing assembly realizes that still according to the structure in specific implementation mode, above-mentioned steel ball retainer is arranged in acceleration, labour-saving function,
To, it can be guided by steel ball retainer and each steel ball is driven to be rolled respectively with the one-to-one steel bowl of each steel ball,
Steel ball is avoided to fall off from steel bowl, meanwhile, it prevents from colliding with each other and rubbing between steel ball when work.
In addition, in above-mentioned specific implementation mode, it is spirally connected at the top of flywheel head cover and internal layer axle sleeve, bearing seal end cap
It is spirally connected with the bottom of internal layer axle sleeve, but not limited to this, can also be, and flywheel head cover and the top of internal layer axle sleeve are clamped, bearing
The bottom of end cover and internal layer axle sleeve is clamped；Alternatively, the either side in setting flywheel head cover and two side of bearing seal end cap
It is fixedly connected with internal layer axle sleeve, the another party being arranged in flywheel head cover and two side of bearing seal end cap is spirally connected or blocks with internal layer axle sleeve
It connects.But according to the structure in specific implementation mode, it is arranged at the top of flywheel head cover and internal layer axle sleeve and is spirally connected, bearing seal
The bottom of end cap and internal layer axle sleeve is spirally connected, and is ensureing flywheel head cover and bearing seal the end cap top with internal layer axle sleeve respectively as a result,
Portion and the bottom of internal layer axle sleeve are close-connected simultaneously, are conducive to carry out fast assembling-disassembling to flywheel head cover and bearing seal end cap.
In addition, the bicycle freewheel of the utility model, can be composed of, same energy the various structures of the above embodiment
Enough play above-mentioned effect.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of bicycle freewheel, which is characterized in that including flywheel body,
The flywheel body includes housing, fly core, is very heavy, very heavy spring and multilayer rolling bearing,
The housing and the winged core are respectively formed as the annular with respective pilot hole, and the winged in-core is embedded in described outer
The inside of the pilot hole of set,
The external tooth for being useful for connecting with chain is uniformly distributed on the outer ring surface of the housing, on the inner ring surface of the housing
It is even that ratchet is distributed with,
It is described very heavy to be hinged on the pawl on the outer ring surface of the winged core,
One end of the very heavy spring is connect with the outer ring surface of the winged core, the other end of the very heavy spring with it is described it is very heavy abut,
Under the action of the very heavy spring, it is described it is very heavy can with the ratchet engagement,
The multilayer rolling bearing includes multilayer bearing bush, and axle sleeve described in multilayer includes internal layer axle sleeve, outer layer axle sleeve and is arranged in institute
The intermediate axle sleeve of at least one layer between outer layer axle sleeve and the internal layer axle sleeve is stated, between every two layers adjacent of axle sleeve respectively
Rolling member is installed, wherein the outer layer axle sleeve is embedded in the assembly of the winged core in a manner of it can follow the winged core rotation
The inside in hole,
Along the central axial direction of the winged core, with the top that one end of the winged core is the flywheel body, with the winged core
The other end be the flywheel body bottom,
It is covered with flywheel head cover at the position between the housing and the internal layer axle sleeve at the top of the flywheel body,
The bearing seal end cap of the multilayer rolling bearing can be covered by being provided in the bottom of the flywheel body.
2. according to the bicycle freewheel described in claim 1, which is characterized in that between every two layers adjacent of axle sleeve also
It is separately installed with the rolling member retainer for separating each rolling member.
3. according to the bicycle freewheel described in claim 2, which is characterized in that between every two layers adjacent of axle sleeve
It is also separately installed with sealing ring positioned at the position of the top side of the rolling member and positioned at the position of the bottom side of the rolling member.
4. according to the bicycle freewheel described in claim 1, which is characterized in that in the flywheel head cover and/or the bearing
The oil filler point for injecting lubricating oil to the rolling member is provided on end cover.
5. according to the bicycle freewheel described in claim 1, which is characterized in that in the flywheel head cover and/or the bearing
Locating groove is provided on end cover.
6. according to the bicycle freewheel described in claim 1, which is characterized in that the outer layer axle sleeve is fixed with the winged core to be connected
It connects.
7. according to the bicycle freewheel described in claim 1, which is characterized in that in the annular surface of the pilot hole of the housing
Position positioned at the top side of the ratchet and the bottom side of the ratchet is respectively arranged with the annular surface of the pilot hole along the housing
Circumferentially multiple steel bowls of shape distribution, steel ball is separately installed in the inside of each steel bowl.
8. according to the bicycle freewheel described in claim 7, which is characterized in that in the annular surface of the pilot hole of the housing
It is also respectively provided with the steel for separating each steel ball positioned at the position of the top side of the ratchet and the bottom side of the ratchet
Pearl retainer.
9. according to the bicycle freewheel described in claim 1, which is characterized in that the flywheel head cover and the internal layer axle sleeve
Top is spirally connected, and the bottom of the bearing seal end cap and the internal layer axle sleeve is spirally connected.
10. according to the bicycle freewheel described in claim 1, which is characterized in that
Along the direction extended from the top of the flywheel body to the bottom of the flywheel body, the external tooth has at least two
Layer, and/or,
Along the direction extended from the top of the flywheel body to the bottom of the flywheel body, the ratchet has at least two
Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820209747.1U CN207814338U (en) | 2018-02-06 | 2018-02-06 | Bicycle freewheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820209747.1U CN207814338U (en) | 2018-02-06 | 2018-02-06 | Bicycle freewheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814338U true CN207814338U (en) | 2018-09-04 |
Family
ID=63319909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820209747.1U Expired - Fee Related CN207814338U (en) | 2018-02-06 | 2018-02-06 | Bicycle freewheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119606A (en) * | 2018-02-06 | 2018-06-05 | 何卫林 | Bicycle freewheel |
-
2018
- 2018-02-06 CN CN201820209747.1U patent/CN207814338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119606A (en) * | 2018-02-06 | 2018-06-05 | 何卫林 | Bicycle freewheel |
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