CN201144979Y

CN201144979Y - Fly wheel

Info

Publication number: CN201144979Y
Application number: CNU2008200020804U
Authority: CN
Inventors: 袁广云
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2008-11-05
Anticipated expiration: 2018-01-25

Abstract

The utility model discloses a flywheel, which comprises a flywheel outer sleeve (1), an inner core (2), a dust cap (3), steel balls (4) and a steel ball race, wherein, a plurality of helicoid or bevel grooves (5) are arranged on the inner edge of the outer sleeve (1); a rolling element (6) is arranged between each groove (5) and the inner core (2); and a race (61) which corresponds to the rolling element is arranged on the circumference of the outer edge of the inner core (2). The flywheel utilizes rolling and extruding friction to realize automatic clutch of the outer sleeve and the inner core, saves a jack spring, overcomes the defect that a jack is not engaged with internal teeth of the outer sleeve due to deformation or breakage of the jack spring, is reliable in transmission and flexible in clutch, has no noise in use, is durable and can be widely applied to mechanical products and equipment such as looms, body-building machines, bicycles, electric bicycles, motorcycles and so on.

Description

Flywheel

Technical field

The utility model relates to the flywheel in a kind of machine driven system, the part that particularly a kind of bicycle, electric bicycle, motorcycle use.

Background technique

The flywheel that on machinery such as weaving machine, fitness equipment, bicycle, is adopted at present, very heavy plate, spring structure are installed in it, by " bicycle use pathfinder " the 35th page and the 91st page of component of having introduced bicycle freewheel respectively that Li Yonglin writes, Golden Shield publishing house in December, 1994 publishes: " internal tooth of Case of fly-wheel constitutes ratchet; 2 very heavy formation ratchets that flywheel is interior, ratchet and ratchet are one way engagement mechanisms.One end of very heavy spring is against in the very heavy groove, struts very heavy ", this just structure makes very heavy spring easy deformation, fractures; very heavy plate and the groove frangibility that very heavy plate is installed, and makes very heavyly not mesh with internal tooth, produces fault; flywheel is short working life, can produce the sound when using simultaneously.In addition, because the flywheel both ends of the surface are the steel ball arc raceway, be that the axial end arc supports, closely link to each other to support by the subsides of the steel ball ball in both ends of the surface arc raceway ball and roll, axially (end jumping) and the deviation of beating of radially (directly jumping) are big, and frictional force is big, precision is low, working life is short.

Summary of the invention

The purpose of this utility model provides compared with prior art a kind of, need not very heavy spring, and durable, muting flywheel.

In order to achieve the above object, the utility model flywheel comprises overcoat, lining core, dust cover, steel ball, steel ball raceway, be provided with several helicoids or inclined plane groove at the overcoat inner edge, between each groove and lining core, be provided with rolling element, on the core outer marginal circumference of lining, be provided with and the corresponding raceway of rolling element.

As a kind of improvement of the present utility model, rolling element is ball or cylindrical roller.

As another improvement of the present utility model, in being located at, the steel ball raceway on the opposing side of core and overcoat, is provided with retainer between the steel ball.

As another kind of improvement the of the present utility model, be respectively equipped with a row steel ball and steel ball raceway in the both sides of flywheel.

In the utility model flywheel when work,, Case of fly-wheel rotates, and the helicoid groove of overcoat inner edge drives rolling element and rolls, and overcoat turns to rolling element when moving to groove the widest position, and rolling element is in free state, and overcoat separates with the lining core; When the overcoat counterrotating, when rolling element is rolled to the narrow place of groove, overcoat is by core raceway in the rolling element extruding, core chucking in making by frictional force, like this, different radians by helicoid make rolling element be in chucking or releasing orientation, utilize the rolling extrusion friction, realized the automatic clutch of overcoat and lining core, saved very heavy spring, overcome because of very heavy spring is out of shape, fractureing causes very heavy and the out of mesh fault of overcoat internal tooth, reliable transmission, the clutch sensitivity, flywheel is durable in use, noise free during use has satisfied the requirement of modern society to high-grade flywheel.In addition, because in the steel ball raceway is located on the opposing side of core and overcoat, this bearing type raceway has radially replaced two original axial end arc roads, changing the original tight supporting of arc road steel ball ball subsides ball is the retainer supporting, and steel ball separates rolling equably by retainer, and there is not the end jumping basically in such bearing structure, also reduced greatly directly to jump, improved working sensitivity, inertia degree, frictional force obviously reduces, and has improved the kinematic accuracy of flywheel.In addition, steel ball and steel ball raceway can be made monosymmetric two row of flywheel, and steel ball is stressed more even, and kinematic accuracy is higher, has prolonged the working life of flywheel.The utility model flywheel processing technology is simple, has reduced cost of production, can be widely used on weaving machine, fitness equipment, bicycle, electric bicycle and the motorcycle.

Description of drawings

Shown in Figure 1 is the plan view of the utility model flywheel.

Fig. 2 is a left view shown in Figure 1.

Fig. 3 is the structural representation that the rolling element of flywheel adopts cylindrical roller.

Fig. 4 is for adopting the flywheel structure schematic representation of biserial steel ball.

Embodiment

As shown in Figure 1 and Figure 2, the utility model flywheel mainly comprises Case of fly-wheel 1, lining core 2, dust cover 3, steel ball 4,

steel ball raceway

41,42, have helicoid or inclined plane groove 5 at overcoat 1 inner edge, rolling element 6 is housed in the groove 5, groove 5 and rolling element 6 can evenly distribute along circumference and be made as 2～3, determine its quantity according to concrete use condition.On lining core 2 outer marginal circumferences, have the raceway 61 of rolling element 6.According to different stressing conditions, rolling element 6 can adopt ball or cylindrical roller.As shown in Figure 3, rolling element 6 adopts cylindrical roller, has increased the frictional force of roller, has improved the moment of torsion that flywheel bears.As shown in Figure 4, steel ball 4 and

steel ball raceway

41,42 can be made two row of the left and right symmetry in flywheel both sides, and like this, steel ball is stressed more even, and kinematic accuracy is higher, has also prolonged the working life of flywheel.

The steel ball raceway can adopt two axial end arc roads of prior art, and the steel ball ball in the arc road pastes ball and closely supports.As shown in Figure 1 and Figure 2, adopt the bearing type raceway, raceway is driveed on the opposing side of lining core 2 and overcoat 1, raceway 42 in core 2 outer rims have promptly has outer raceway 41 on overcoat 1 inner edge, steel ball 4 is stuck between the inside and

outside raceway

42,41, simultaneously, retainer 7 is housed between the steel ball 4.This bearing type raceway has radially replaced two axial end arc roads of prior art, changing the original tight supporting of arc road steel ball ball subsides ball is the retainer supporting, such bearing structure does not exist end to jump basically, has reduced greatly directly to jump yet, and has improved the kinematic accuracy of flywheel.

The utility model can be used for bicycle, electric bicycle, motorcycle, also can be widely used on the engineering goods equipment such as weaving machine, fitness equipment.

Claims

1, a kind of flywheel, comprise Case of fly-wheel (1), lining core (2), dust cover (3), steel ball (4), steel ball raceway, it is characterized in that: be provided with several helicoids or inclined plane groove (5) at overcoat (1) inner edge, between each groove (5) and lining core (2), be provided with rolling element (6), on lining core (2) outer marginal circumference, be provided with and the corresponding raceway (61) of rolling element (6).

2, flywheel according to claim 1 is characterized in that: described rolling element (6) is ball or cylindrical roller.

3, flywheel according to claim 1 is characterized in that: on the opposing side of core (2) and overcoat (1), be provided with retainer (7) between the steel ball (4) in described steel ball raceway (41), (42) are located at.

4, flywheel according to claim 1 is characterized in that: be respectively equipped with a row steel ball (4) and steel ball raceway (41), (42) in the both sides of flywheel.