CN208089803U - hub ratchet wheel driving structure - Google Patents

Abstract

A hub ratchet drive structure comprises: a hub is arranged on the axis in a penetrating way through a plurality of bearings, a ratchet wheel is arranged on the axis in a penetrating way through a plurality of bearings, a large-diameter step hole is arranged on one side of the hub, a baffle plate is arranged in the large-diameter step hole, then the one-way groove ring is fixed in a screw locking way, and a small-diameter step shaft is arranged on the corresponding side of the ratchet wheel and is arranged in the large-diameter step hole; mainly comprises the following steps: the periphery of the small-diameter step shaft of the ratchet wheel is provided with a plurality of transverse fixing grooves which are transversely arranged at the tail ends of the non-return pressing pieces, the ratchet wheel and the front end opposite side of the non-return pressing pieces are respectively provided with a first limiting groove and a second limiting groove for limiting the two ends of the spring and the position of the non-return pressing pieces, the non-return pressing pieces are provided with non-return pressing piece action angle grooves for changing the action angles of the non-return pressing pieces, and the ratchet wheel is provided with an inclined surface coating type clamping groove which enables the assembled fixing blocking pieces to reduce the displacement of the non-.

Description

hub ratchet drive mechanism

technical field

The utility model relates to the technical field of a flower hub, in particular to provide a flower hub ratchet drive structure technically, the ratchet and the anti-reverse force are respectively provided with first and second limiting grooves to limit the spring and the anti-reverse force. In addition, the anti-reverse hammer is provided with grooves for the action angle of the anti-reverse hammer, and the ratchet wheel has a fixed groove on an inclined plane so that the fixed stopper can reduce the contact area in an arc shape to limit the displacement of the hammer.

Background technique

At present, refer to the new patent case of the existing Taiwan Application No. 101200118 "the limit and dustproof structure of the hub ratchet elastic check key", which also utilizes the elastic force of the shrapnel to drive the check key to stop at the hub ratchet, so as to achieve backstop purpose. It is different from the ratchet and the anti-reverse percussion member of the utility model, which are provided with the first and second limit grooves to limit the spring and the anti-reverse percussion sub, and the utility model has the change of the action angle groove of the anti-reverse percussion sub. Action angle, the utility model has a slanted surface covered groove, combined with a fixed block to form an arc shape, reducing the contact area to limit the displacement of the impactor, while the existing oil seal has a large area of contact, the two are obviously different.

Next, referring to Fig. 1, it is a cross-sectional view of another existing Chinese Taiwan application No. 104137356 "close-tooth hub ratchet combination structure" invention patent case, wherein the ratchet parts 12 in the hub 11 are combined As for the ratchet wheel 13 , the ratchet member 12 utilizes the elastic force of the elastic piece 14 to achieve the purpose of backstopping the interlocking ring 15 of the hub 11 . Its shrapnel 14 and the ratchet of the utility model and the anti-return percussion child are respectively provided with the first and second limit grooves, so as to limit the spring and the anti-return percussion child are different, and the utility model has the action angle groove of the non-return percussion sub. The groove changes the action angle. The utility model has an inclined-surface covered groove, which is assembled into a fixed block to form an arc shape to reduce the contact area and limit the displacement of the impactor, which is also the deficiency of the previous case.

In addition, the early existing bicycle hub spring pawl fixing structures all adopt a single-point fixing method, so the existing pawls are easy to shift in action and easy to fall during assembly. The anti-reverse breaker of the utility model is fixed horizontally into the ratchet-horizontal fixed groove, which can avoid the problems of falling and spring flying during assembly, and the action angle groove on the anti-reverse breaker can also cooperate with the fixed groove of the ratchet Angle is used to change the action angle during the action. The spring limit action method is mainly to fix the position of the anti-reverse action. It is also easier to control the elastic coefficient through the spring to improve the anti-reverse action of the bicycle hub during operation. The coefficient of frictional resistance between the one-way groove rings also makes it easier to control the synchronization of actions between the pressing elements.

Therefore, in view of the problems existing in the above-mentioned existing structures, how to develop a more ideal and practical innovative structure is what consumers are eagerly looking forward to, and it is also the goal and direction that relevant businesses must work hard to develop breakthroughs.

In view of this, based on many years of experience in the manufacture, development and design of related products, the inventor finally obtained the utility model after detailed design and careful evaluation for the above-mentioned objectives.

Utility model content

The main purpose of this utility model is to provide a hub ratchet driving structure, wherein the ratchet and the anti-return percussion element are respectively provided with first and second limit grooves to limit the difference between the spring and the anti-return percussion element, and the utility model has The action angle groove of the anti-reverse impactor changes the action angle. The utility model has a slope-covered locking groove, which is combined with a fixed block to form an arc shape to reduce the contact area and limit the displacement of the impactor.

In order to achieve the above purpose, the utility model provides a hub ratchet driving structure, which includes: a hub, a hub is assembled through a plurality of bearings, a ratchet is assembled through a plurality of bearings, and one side of the hub is A large-diameter stepped hole is set, and the large-diameter stepped hole is assembled into a baffle and then screwed to fix the one-way groove ring. The small-diameter stepped shaft is set on the corresponding side of the ratchet to be assembled into the large-diameter stepped hole; the main reason is: the peripheral surface of the ratchet small-diameter stepped shaft is designed A plurality of horizontal fixed grooves are horizontally inserted into the end of the anti-return hammer, and the ratchet and the opposite side of the front end of the anti-reverse hammer are respectively provided with first and second limit grooves to limit the positions of the two ends of the spring and the position of the anti-reverse hammer, and The anti-return hammer is provided with a movement angle groove of the anti-reverse hammer to change its action angle, and the ratchet is provided with a slope-covered groove so that the assembled fixed block can reduce the contact area in an arc shape to limit the movement of the hammer.

Preferably, the aforementioned fixed blocking piece is a plastic steel sheet fixed blocking piece.

Preferably, the aforementioned second limiting groove can be a tapered groove gradually expanding from inside to outside.

Preferably, a plurality of one-way grooves are arranged in the aforementioned one-way groove ring, and the action angle grooves of the aforementioned anti-return pressing sub can also cooperate with the angle of the aforementioned one-way grooves of the aforementioned one-way groove ring to change the action during the action. angle.

Description of drawings

Fig. 1 is the cross-sectional view of the hub ratchet combination structure of the prior art close-tooth type.

Fig. 2 is a three-dimensional schematic diagram of an embodiment of the utility model.

Fig. 3 is a perspective exploded view of an embodiment of the utility model in the left direction.

Fig. 4 is a perspective exploded schematic diagram of an embodiment of the utility model in the right direction.

Fig. 5 is a radial plane sectional view of an embodiment of the utility model.

Fig. 6 is another perspective exploded schematic diagram of an embodiment of the utility model in the right direction.

Fig. 7 is an axial plane sectional view of an embodiment of the utility model.

Description of drawings:

〔current technology〕

11 Hub 12 Pawl piece

13 Ratchet 14 Shrapnel

15 linkage ring

[this utility model]

20 Shaft 21 First bearing

22 Second bearing 30 Hub

31 Large diameter stepped hole 32 Baffle

33 One-way groove ring 331 One-way groove

40 Ratchet 41 Small diameter stepped shaft

42 Horizontal fixing groove 43 First limiting groove

44 Inclined surface-covered card groove 50 Backlash stopper

51 End 52 Front

53 Second limit slot

54 Action Angle Groove

60 spring 70 retainer

θ gap.

Detailed ways

The utility model provides a design of a hub ratchet driving structure.

In order to further describe the purpose, features and effects of the present utility model, the following details are as follows in conjunction with the implementation and accompanying drawings:

Referring to Figure 2-5, the utility model provides a hub ratchet drive structure, including:

A hub 30 is threaded through a hub 20 on one side by a plurality of first bearings 21, and a ratchet 40 is worn on the hub 20 by a plurality of second bearings 22 on the other side. Diameter stepped hole 31, the aforementioned large diameter stepped hole 31 is assembled into a baffle plate 32 and then screwed to fix a one-way groove ring 33, the aforementioned ratchet 40 is provided on the side corresponding to the aforementioned hub 30 with a small diameter stepped shaft 41 assembled into the aforementioned large diameter Inside the step hole 31;

A plurality of transverse fixing grooves 42 are provided on the peripheral surface of the small-diameter step shaft 41 of the aforementioned ratchet 40, and a plurality of ends 51 of the anti-return hammer 50 and a plurality of springs 60 are placed in the lateral direction. The aforementioned ratchet 40 is opposite to the front end 52 of the aforementioned anti-reverse hammer 50 The first and second limit grooves 43, 53 are respectively provided on the side to limit the two ends of the aforementioned spring 60, and the aforementioned spring 60 limits the position of the aforementioned anti-reverse hammer 50, so as to avoid the displacement of the aforementioned anti-reverse impact child 50, and the aforementioned The surface of the non-reverse hammer 50 is provided with a groove 54 for changing the action angle of the aforementioned anti-reverse hammer 50 with a set depth, a fixed stopper 70, and the aforementioned ratchet 40 is provided with a slanted surface. The covering groove 44 makes the assembled fixed block 70 form an arc-shaped stop against the anti-reverse hammer 50, reducing the contact area to limit the displacement of the anti-reverse hammer 50.

Referring to FIG. 6 , the hub ratchet drive structure, wherein the above-mentioned fixed block 70 is a plastic steel sheet fixed block.

Referring to Figures 3 and 5, the hub ratchet driving structure, wherein the aforementioned second limiting groove 53 can be a tapered groove gradually expanding from inside to outside.

Referring to Figures 3, 4, and 5, the non-reverse breaking member 50 is fixed horizontally and placed in the ratchet 40-lateral fixing groove 42, which can avoid the problem of falling and spring 60 flying during assembly. The groove 54 can also cooperate with the angle of the one-way groove 331 of the one-way groove ring 22 to change the action angle during the action. The action mode of the spring 60 is mainly to fix the action position of the anti-reverse forcer 50. The 60 action is also easier to control the coefficient of elasticity to improve the friction resistance coefficient between the anti-reverse force 50 and the one-way groove ring 33 when the bicycle hub is running, and it is also easier to control the anti-reverse force 50 and the anti-reverse Synchronization of actions between compellors 50.

Referring to Figures 4 and 5, in the described hub ratchet drive structure, a plurality of one-way grooves 331 are provided in the aforementioned one-way grooved ring 33, and the aforementioned anti-reverse action angle grooves 54 can also cooperate with the aforementioned The angle of the aforementioned one-way groove 331 of the one-way groove ring 33 is used to change the action angle during the action.

Referring to Figures 6 and 7, the fixed block 70 is a fixing device that reduces the displacement of the anti-reverse hammer 50 during the action. The ratchet 40 is designed with a slope-covered groove 44, and the fixed block 70 is embedded in the slope. When covering the card groove 44, it will present an arc shape to reduce the area of direct contact with the anti-reverse percussion member 50, and there is a small distance or gap θ between the fixed block 70 and the anti-reverse percussion member 50, which can reduce the resistance coefficient of direct friction , because the spacing or gap θ is very small, it can also effectively limit the displacement of the anti-reverse hammer 50 .

As can be seen from the above, the hub ratchet driving structure of the present utility model has the first and second limiting grooves for the ratchet and the non-return percussion member separately, so as to limit the spring and the non-return percussion member are different, and the utility model has a limit The action angle groove of the reverse impact forcer changes the action angle. The utility model has a slope-covered locking groove, which is combined with a fixed block to form an arc shape to reduce the contact area and limit the displacement of the forcer.

The foregoing is a specific description of the technical features of the utility model for the preferred embodiment of the utility model; however, those skilled in the art can change and modify the utility model without departing from the spirit and principles of the utility model, and these Changes and modifications should be included in the scope defined in the protection scope of this application.

Claims (4)

1. a kind of hub ratchet wheel driving structure, including：

One axle center, by side to wear one flower hub of group in multiple first bearings, aforementioned axle center is by the other side in multiple second bearings One ratchet of group is worn, aforementioned colored hub side sets major diameter rank hole, and aforementioned major diameter rank hole group enters a baffle, and screw lock fixes a unidirectional groove again Ring, the side that aforementioned ratchet corresponds to aforementioned colored hub set path rank axis group and enter in aforementioned major diameter rank hole；It is characterized in that：

Aforementioned ratchet path rank axis circumferential surface, which sets multiple lateral fixing grooves laterally merging is multiple, non-return hits urgent sub- end；Multiple bullets Spring, aforementioned ratchet non-return hit urgent sub- front end opposite side to be respectively equipped with the first limiting slot, the second limiting slot aforementioned to limit with aforementioned Both ends of the spring and aforementioned spring limit aforementioned non-return hit and compel sub position, avoid aforementioned non-return hit from compeling son displacement, and aforementioned non-return Hit urgent sublist face equipped with set depth it is non-return hit urgent sub- start operating angle groove change its it is aforementioned it is non-return hit compel son start Operating angle；One fixes catch, and the aforementioned fixed catch that inclined-plane clad type Ka Gou makes group enter is equipped in aforementioned ratchet and forms arcuation Aforementioned non-return hit of backstop compels son, and the limitation for reducing contact area aforementioned non-return hits urgent sub- displacement.

2. hub ratchet wheel driving structure as described in claim 1, which is characterized in that aforementioned fixed catch is that steel sheet fixes gear Piece.

3. hub ratchet wheel driving structure as described in claim 1, which is characterized in that aforementioned second limiting slot can be by introversion The cone tank of outer flaring.

4. hub ratchet wheel driving structure as described in claim 1, which is characterized in that set in aforementioned unidirectional ditch grooved ring multiple unidirectional Groove, it is aforementioned non-return to hit urgent sub- operating angle groove the aforementioned unidirectional trench angles of aforementioned unidirectional ditch grooved ring also be coordinated to change Operating angle when change acts.