CN208232708U - A kind of novel rear hub transmission structure - Google Patents

Abstract

The utility model discloses a kind of novel rear hub transmission structures, including axle center, the left and right ends in the axle center are respectively by being mounted on the inside of ontology by left Bearing and right Bearing, the outer cover in the axle center is equipped with and is successively set with bushing, tower spring, large ratchet, small ratchet and card body from left to right, ratchet engagement on the right side of the tower spring and large ratchet and ontology, ratchet engagement on the left of the small ratchet and card body, the left and right ends of the ontology are respectively equipped with left cap and right cap, and the left cap and right cap are engaged with the left and right ends in axle center；The novel rear hub transmission structure, it is few compared to the simple spare and accessory parts of traditional structure, facilitate processing, assembling and maintenance；Simultaneously because will effectively improve the transmission efficiency of flower-drum for axial transmission；The intensity of flower-drum transmission is effectively raised by obviously increasing compared to the traditional structure ratchet field of conjugate action.

Description

A kind of novel rear hub transmission structure

Technical field

The utility model relates to bicycle assembly parts technical field, the especially improvement of rear drum ratchet driving structure system, Specially a kind of novel rear hub transmission structure.

Background technique

1. ratchet driving structure is the core component of bicycle drive shaft, ratchet directly affects the transmission efficiency of bicycle and makes Use the service life；

2. ratchet driving structure is as shown in Figure 1, card body a left-external side peripheral wall opens up three appearances along axial direction respectively currently on the market It receives slot, three pawl c is centered around in mobilizable holding tank using spring b, ratchet ring d is engaged to card body a rotating forward with pawl c When can drive ratchet ring d rotate, when card body a reversion when three pawl c will inside contract, will not be engaged with ratchet ring d, therefore card body a Will dally not will drive ratchet ring d and is rotated.

Utility model content

The purpose of this utility model is to provide a kind of novel rear hub transmission structures, to solve to mention in above-mentioned background technique Out the problem of.

To achieve the above object, the utility model provides the following technical solutions: a kind of novel rear hub transmission structure, including Axle center, the left and right ends in the axle center respectively by being mounted on the inside of ontology by left Bearing and right Bearing, the axle center Outer cover equipped with being successively set with bushing, tower spring, large ratchet, small ratchet and card body from left to right, the tower spring and large ratchet with Ratchet engagement on the left of ratchet engagement on the right side of ontology, the small ratchet and card body, the left and right ends of the ontology are respectively equipped with a left side Side cover and right cap, the left cap and right cap are engaged with the left and right ends in axle center.

Preferably, oil sealing is equipped between the left cap and right cap and ontology.

Preferably, the right cap and left cap are stainless steel side cover.

Preferably, the outer wall of the ontology is equipped with anti-corrosion layer.

Preferably, the anti-corrosion layer is polytetrafluoroethylene ethylene layer or carbon fiber layer.

Compared with prior art, the utility model has the beneficial effects that

1. the novel rear hub transmission structure, few compared to the simple spare and accessory parts of traditional structure, facilitate processing, assembling and maintenance；

2. simultaneously because will effectively improve the transmission efficiency of flower-drum for axial transmission；Compared to the traditional structure ratchet field of conjugate action The intensity of flower-drum transmission is effectively raised by obviously increasing.

Detailed description of the invention

Fig. 1 is traditional flower-drum drive mechanism schematic diagram；

In Fig. 1: 1 engagement card body a, 2 spring b, 3 pawl c, 4 ratchet ring d；

Fig. 2 is that new construction flower-drum drive mechanism flower-drum part dismounts schematic diagram；

Fig. 3 is new construction flower-drum drive mechanism flower-drum figure.

In Fig. 2-3: 1 axle center, 2 ontologies, 3 right Bearings, 4 bushings, 5 tower springs, 6 large ratchets, 7 small ratchets, 8 card bodies, 9 right sides Lid, 10 left caps, 11 left Bearings.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Same or like component is indicated with identical label in different figures；In addition it is understood that such as " first " in text, " second ", " third ", "upper", "lower", "front", "rear", "inner", "outside", " end ", " portion ", " section ", " width ", " thickness ", " area " Etc. and similar term be only convenient for observer to describe the utility model with reference to help is constructed and be only used in figure, be not Restriction to the utility model.

Fig. 2-3 is please referred to, the utility model provides a kind of technical solution: a kind of novel rear hub transmission structure, including axis The heart 1, the left and right ends in the axle center 1 are respectively by being mounted on the inside of ontology 2, the axis by left Bearing 11 and right Bearing 3 The outer cover of the heart 1 is equipped with and is successively set with bushing 4, tower spring 5, large ratchet 6, small ratchet 7 and card body 8, the tower spring 5 from left to right And the ratchet engagement on 2 right side of large ratchet 6 and ontology, the small ratchet 7 and 8 left side ratchet engagement of card body, the left and right of the ontology 2 Both ends are respectively equipped with left cap 10 and right cap 9, and the left cap 10 and right cap 9 are engaged with the left and right ends in axle center 1.

Specifically, being equipped with oil sealing between the left cap 10 and right cap 9 and ontology 2, by the effect of oil sealing, improve Leakproofness between left cap 10 and right cap 9 and ontology 2.

Specifically, the right cap 9 and left cap 10 are stainless steel side cover, stainless steel side cover intensity is high, service life It is long.

Specifically, the outer wall of the ontology 2 is equipped with anti-corrosion layer, anti-corrosion layer improves the corrosion resistance of ontology 2.

Specifically, the anti-corrosion layer is polytetrafluoroethylene ethylene layer or carbon fiber layer, polytetrafluoroethylene ethylene layer or carbon fiber layer are resistance to Corrosive effect is good.

Structural principle: this ratchet driving structure can be pushed away by the engagement of large ratchet 6 and small ratchet 7 using tower spring 5 is constant Dynamic large ratchet 6 compresses engagement toward 7 direction of small ratchet on left side card body 8, when the rotation of 8 positive direction of card body, can drive large ratchet 6 It is rotated with ontology 2；When the rotation of 8 opposite direction of card body since tower spring 5 acts on, by large ratchet 6 to compressing on the right side of ontology 2, cause Prevent ontology 2 from being driven to rotate.The novel rear hub transmission structure, compared to the simple spare and accessory parts of traditional structure it is few, facilitate processing, Assembling and maintenance；Simultaneously because will effectively improve the transmission efficiency of flower-drum for axial transmission；It is engaged compared to traditional structure ratchet Face effectively raises the intensity of flower-drum transmission by obviously increasing.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of novel rear hub transmission structure, including axle center (1), it is characterised in that: distinguish the left and right ends of the axle center (1) By being mounted on the inside of ontology (2) by left Bearing (11) and right Bearing (3), the outer cover of the axle center (1) is equipped with from a left side Bushing (4), tower spring (5), large ratchet (6), small ratchet (7) and card body (8), the tower spring (5) and megacanthopore are successively set with to the right side The ratchet engagement on the right side of (6) and ontology (2), the small ratchet (7) and card body (8) left side ratchet engagement are taken turns, the ontology (2) Left and right ends are respectively equipped with left cap (10) and right cap (9), a left side for the left cap (10) and right cap (9) and axle center (1) Right both ends engagement.

2. a kind of novel rear hub transmission structure according to claim 1, it is characterised in that: the left cap (10) and the right side Oil sealing is equipped between side cover (9) and ontology (2).

3. a kind of novel rear hub transmission structure according to claim 1, it is characterised in that: the right cap (9) and a left side Side cover (10) is stainless steel side cover.

4. a kind of novel rear hub transmission structure according to claim 1, it is characterised in that: the outer wall of the ontology (2) Equipped with anti-corrosion layer.

5. a kind of novel rear hub transmission structure according to claim 4, it is characterised in that: the anti-corrosion layer is poly- four Vinyl fluoride layer or carbon fiber layer.