CN102312942B

CN102312942B - Noiseless flywheel

Info

Publication number: CN102312942B
Application number: CN201110140943.0A
Authority: CN
Inventors: 封秉和; 张林员
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-27
Filing date: 2011-05-27
Publication date: 2014-06-18
Anticipated expiration: 2031-05-27
Also published as: CN102312942A

Abstract

The invention relates to a noiseless flywheel which comprises a housing and an inner core, wherein the external diameter of the housing is provided with a sprocket or a socketed sprocket, and the internal diameter of the housing is provided with a ratchet wheel; the inner core is sleeved on the internal diameter of the housing from one end of the housing; the other end of the housing is provided with an end cover, the end cover and the inner core are fixedly connected; the ratchet wheel is provided with at least a groove, and the inside of the groove is provided with a plastic ring; a bulge of the ratchet wheel is arranged at the central part of the internal diameter of the housing, and the two sides of the bulge are respectively provided with an internal concave part; the grooves are arranged inclined to one or two sides of the thickness center of the ratchet wheel, and the plastic ring is arranged in the groove and higher than the groove; the inner core is provided with a round shaft corresponding to the ratchet wheel, the round shaft is provided with at least a notch, and the notch is provided with a ratchet (the ratchet and the ratchet wheel can be tightly clamped together); and the ratchet and the ratchet wheel are clamped tightly, and the plastic ring is extruded by the ratchet. According to the invention, when the ratchet and the ratchet wheel are clamped tightly, the ratchet and the plastic rings are extruded firstly so as to cushion the impact force on the ratchet, thereby achieving the effects of wear resistance and noise silencing. The noiseless flywheel has the characteristics of simple and reasonable design, low manufacturing cost, and is convenient to process, and is safe and reliable in application.

Description

Silent free wheel

Technical field

The present invention relates to a kind of Silent free wheel that is mainly used in bicycle.

Background technique

Traditional flywheel, as shown in Figure 1, its inner ratchet, ratchet part quick abrasion, and the noise producing when its work is large.On market, the transformation of noiselessization of flywheel is had a lot.As Chinese patent literature CN201180749 discloses a kind of bicycle freewheel on January 14th, 2009, especially a kind of Silent abrasion-proof bicycle freewheel, it is mainly made up of hub, steel ball, end cap in sprocket wheel, ball, flywheel, wherein hub penetrates from the endoporus left side of sprocket wheel in flywheel, and end cap is arranged in flywheel on hub by left-handed thread on the right side of sprocket wheel; In ball slideway in flywheel between hub and sprocket wheel and between end cap and sprocket wheel, fill ball; On sprocket wheel internal surface with flywheel in the steel ball rolling plane corresponding section of hub be processed with steel ball rail slot, steel ball is housed in groove.The flywheel of this structure, structure is comparatively complicated, and Assembly part is many, and processing cost is also high.Require further improvement.

Summary of the invention

Object of the present invention aims to provide that a kind of simplicity of design is reasonable, easy to process, fabricating cost is low, wear-resisting and noiseless Silent free wheel, to overcome deficiency of the prior art.

By a kind of Silent free wheel of this object design, comprise that external diameter maybe can be socketed sprocket, internal diameter and be provided with the shell of ratchet with sprocket, with be socketed in from shell one end its internal diameter in core, the other one end of shell is provided with end cap and is fixedly connected with inner core, its structure characteristic is on ratchet, to be provided with at least one groove, is provided with glue ring in groove.

Described ratchet projection is arranged on the central part of internal diameter of outer cover, and both sides are provided with inner fovea part, and groove is offset to the one or both sides of ratchet mid-depth, and glue ring is placed in groove, and exceeds groove.

In the ring cavity that described inner fovea part and inner core form, be covered with steel ball or steel ball frame is set.

The corresponding ratchet of described inner core is provided with circular shaft, and circular shaft is provided with at least one breach, is provided with the ratchet that can clamp with ratchet on breach.

Described ratchet and ratchet clamping, ratchet extruding glue ring.

The mid-depth place of the corresponding ratchet of described circular shaft is also provided with spring groove, and is provided with the spring of ring-type.

Between described end cap and inner core, be provided with pad.

By adopting technique scheme, in the ratchet of shell, be provided with the groove of biasing, and place glue ring, when clamping occurs for ratchet and ratchet, at ratchet, first and glue ring extruding, cushions its impact force, thereby reaches effect wear-resisting and that eliminate the noise.It has the advantages that simplicity of design is reasonable, easy to process, fabricating cost is low, safe and reliable.

Brief description of the drawings

Fig. 1 is the decomposition texture schematic diagram of traditional flywheel.

Fig. 2 is the decomposition texture schematic diagram of one embodiment of the invention.

Fig. 3 is the linkage structure schematic diagram of shell and glue ring.

The plan view of Fig. 4 shell.

Fig. 5 is the sectional view of A-A in Fig. 4.

Fig. 6 is the assembly structure schematic diagram of shell and glue ring.

Fig. 7 is the plan view of Fig. 6.

Fig. 8 is the structural representation of B-B in Fig. 7.

Fig. 9 is the assembly structure schematic diagram of Fig. 2.

Figure 10 is the half sectional view of Fig. 9.

Figure 11 is an embodiment working state schematic representation.

Figure 12 is another working state schematic representation of an embodiment.

In figure: 1 is shell, 1.1 is ratchet, and 1.2 is inner fovea part, and 1.3 is groove, and 2 is inner core, and 2.1 is breach, and 2.2 is circular shaft, and 2.3 is spring groove, and 3 is ratchet, and 4 is spring, and 5 is glue ring, and 6 is pad, and 7 is steel ball, and 8 is end cap.

Embodiment

Below in conjunction with drawings and Examples, the invention will be further described.

Referring to Fig. 2-Figure 12, this Silent free wheel, comprise that external diameter maybe can be socketed sprocket, internal diameter and be provided with the shell 1 of ratchet 1.1 with sprocket, with be socketed in from shell 1 one end its internal diameter in core 2, the other one end of shell 1 is provided with end cap 8 and is fixedly connected with inner core 2, on its ratchet 1.1, be provided with a groove 1.3, be provided with glue ring 5 in groove, both annexations are shown in Figure 3.

Ratchet 1.1 projections are arranged on the central part of shell 1 internal diameter, both sides are provided with inner fovea part 1.2, groove 1.3 is offset to a side of ratchet 1.1 mid-depths (when the quantity of groove is more than 1 time, groove 1.3 is offset to the both sides of ratchet 1.1 mid-depths), glue ring 5 is placed in groove 1.3, and exceeds groove.As Figure 6-Figure 8.

In the ring cavity that inner fovea part 1.2 and inner core 2 form, be covered with steel ball 7, or steel ball frame (not marking in figure) is set.Described steel ball frame is on circular steelframe, to be evenly equipped with multiple steel balls.

In the corresponding ratchet 1.1 of core 2 be provided with circular shaft 2.2, circular shaft 2.2 is provided with at least one breach 2.1 (also can as required, more breach be set), is provided with the ratchet 3 that can clamp with ratchet 1.1 on breach 2.1.Ratchet 3 clamps with ratchet 1.1, and ratchet 3 pushes glue ring 5.As shown in figure 10.The mid-depth place of the corresponding ratchet 1.1 of circular shaft 2.2 is also provided with spring groove 2.3, and is provided with the spring 4 of ring-type.Between end cap 8 and inner core 2, be provided with pad 6.

Referring to Figure 11, shell 1 clockwise rotates, and ratchet 3 pushes glue ring 5, and clamps with ratchet 1.1, thereby in driving, core 2 clockwise rotates together, and ratchet 3 is under the buffer function of glue ring 5, while clamping with ratchet 1.1, can there is not noise, and reduce friction between the two, increase its working life.

Referring to Figure 12, when shell 1 stops operating, ratchet 3 can be beated and separate with ratchet 1.1, in core 2 under effect of inertia, continue to clockwise rotate, and under the effect of glue ring 5, friction between ratchet 3 and ratchet 1.1 reduces greatly, eliminates the noise that both produce because of friction, increases working life simultaneously.

Claims

1. a Silent free wheel, comprise that external diameter maybe can be socketed sprocket, internal diameter and be provided with the shell (1) of ratchet (1.1) with sprocket, with be socketed in from shell (1) one end its internal diameter in core (2), the other one end of shell (1) is provided with end cap (8) and is fixedly connected with inner core (2), it is characterized in that being provided with at least one groove (1.3) on ratchet (1.1), in groove, be provided with glue ring (5);

Described ratchet (1.1) projection is arranged on the central part of shell (1) internal diameter, and both sides are provided with inner fovea part (1.2), and groove (1.3) is offset to the one or both sides of ratchet (1.1) mid-depth, and glue ring (5) is placed in groove (1.3), and exceeds groove;

In the ring cavity that described inner fovea part (1.2) and inner core (2) form, be covered with steel ball (7) or steel ball frame is set;

The corresponding ratchet of described inner core (2) (1.1) is provided with circular shaft (2.2), and circular shaft is provided with at least one breach (2.1), is provided with the ratchet (3) that can clamp with ratchet (1.1) on breach;

Described ratchet (3) and ratchet (1.1) clamping, ratchet (3) extruding glue ring (5).

2. Silent free wheel according to claim 1, is characterized in that the mid-depth place of the corresponding ratchet of described circular shaft (2.2) (1.1) is also provided with spring groove (2.3), and is provided with the spring (4) of ring-type.

3. Silent free wheel according to claim 1 and 2, is characterized in that being provided with pad (6) between described end cap (8) and inner core (2).