CN201973136U

CN201973136U - Flower hub ratchet gear

Info

Publication number: CN201973136U
Application number: CN2011200197219U
Authority: CN
Inventors: 陈美梨
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-21
Filing date: 2011-01-21
Publication date: 2011-09-14
Anticipated expiration: 2021-01-21

Abstract

The utility model relates to a flower hub ratchet gear which comprises a mandril, a flower hub seat and a ratchet wheel cylinder, wherein the flower hub seat is rotatably sleeved on the mandril; a groove is arranged at one end of the flower hub seat in a concave mode and is provided with an inner peripheral surface; the ratchet wheel cylinder is rotatably sleeved on the mandril; a wheel-shaped body sleeved on the groove is arranged at one end of the ratchet wheel cylinder facing to the flower hub seat; the wheel-shaped body is provided with an outer peripheral surface; a plurality of tooth spaces are formed on one of the inner peripheral surface of the groove and the outer peripheral surface of the wheel-shaped body at equal intervals; a plurality of block accommodating spaces are arranged on the other of the inner peripheral surface of the groove and the outer peripheral surface of the wheel-shaped body; and a thorn block subjected to spring action to reach against the corresponding tooth space is arranged on each block accommodating space. The flower hub ratchet gear has the advantages that the time from starting trample to transmission is significantly shortened so that the riding and trample are smoother; and the size of the flower hub seat is further reduced so that the entire size is smaller.

Description

The hub ratchet wheel device

Technical field

The utility model relates to a kind of ratchet unit, refer to especially a kind of make to drive trample the hub ratchet wheel device more smooth and easy, that size is littler.

Background technique

The general at present existing hub ratchet wheel device that is used for bicycle, as shown in Figure 5, general ratchet unit comprises 40 compositions of ratchet tube that a flower hub seat 50 and is embedded in this flower hub seat 50, this groove 51 has 18 teeth groove 52, this teeth groove 52 has a leading edge 522 and an abutment edge 524, and this abutment edge 524 is the approximate vertical form and is connected with this leading edge 522; This ratchet tube 40 uniformly-spaced is provided with three sour jujube pieces 42, and each sour jujube piece 42 has a ratchet 422 that can lean with this abutment edge 524, thereby is driven this flower hub seat 50.

When existing hub ratchet wheel device uses on bicycle, and desirable not as expection, and it is as follows to sum up its disappearance of conclusion:

1, when treadled cycle pedal again, this sour jujube piece 42 needs to move a segment distance, promptly about slightly length of leading edge 522, just can make this ratchet 422 contact with this abutment edge 524 against, performance in time efficiency is comparatively disappointing, can't mesh rapidly and rotate, be easy to generate and drive the sensation that has some setbacks.

2, each sour jujube piece 42 only has a ratchet 422, so need form darker teeth groove 52 in this groove 51, just can make this ratchet 422 produce enough engaging forces with these abutment edge 524 effects, but darker teeth groove 522 can cause these flower hub seat 50 sizes bigger.

The model utility content

The purpose of this utility model is to improve the deficiencies in the prior art, provide a kind of make to drive trample the hub ratchet wheel device more smooth and easy, that size is littler.

For achieving the above object, the utility model is by the following technical solutions:

A kind of hub ratchet wheel device is characterized in that it comprises:

One axle;

One flower hub seat, it is sheathed on this axle rotationally, and Yu Yiduan is arranged with and forms a groove, and this groove has an inner peripheral surface;

One ratchet tube, its sheathed rotationally this axle, this ratchet tube is provided with a wheel-shaped body that is inserted in this groove in the end towards this flower hub seat, and this wheel-shaped body has an outer circumferential face;

One of them uniformly-spaced forms several teeth groove the inner peripheral surface of wherein said groove and the outer circumferential face of described wheel-shaped body, is decided to be a tooth pitch with the distance bound between adjacent two teeth groove;

Wherein another is provided with several appearance piece grooves for the inner peripheral surface of wherein said groove and the outer circumferential face of described wheel-shaped body, those hold the piece groove and are divided into two groups, appearance piece groove in arbitrary group is arranged equidistantly, these two groups are held piece groove each interval and arrange, each distance of holding piece groove and arbitrary adjacent appearance piece groove is the non-integral multiple of aforementioned tooth pitch, and in each hold piece groove be provided with one be subjected to the elastic force effect and be resisted against the sour jujube piece of corresponding teeth groove.

Those teeth groove are positioned at the outer circumferential face of described wheel-shaped body, and those hold the inner peripheral surface that the piece groove is positioned at described groove.

Described groove has the described teeth groove more than 60; Described sour jujube piece has the ratchet that meshes with corresponding teeth groove more than two.

Described sour jujube piece has three described ratchets.

Described sour jujube piece has six.

Described appearance piece groove has a sour jujube piece groove and a shell fragment groove, the opening of this sour jujube piece groove and this shell fragment groove be provided with in opposite directions and respectively setting-in be provided with described sour jujube piece and and peak at the shell fragment of this sour jujube piece with elastic force.

The beneficial effects of the utility model are: significantly shorten and begin to trample the back to the time of carrying out between the transmission, thereby make drive trample more smooth and easy; The volume that has further dwindled colored hub seat makes overall dimensions littler.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the present utility model.

Figure 1A is the partial enlarged drawing of teeth groove structure among Fig. 1.

Fig. 2 is the perspective exploded view of colored hub seat of the present utility model.

Fig. 3 is the sectional view after the assembling of the present utility model.

Fig. 4 is the partial enlarged drawing of Fig. 3.

Fig. 5 is the sectional view of existing hub ratchet wheel device.

[primary clustering label declaration]

10: flower hub seat

12: groove

13,14: hold the piece groove

131: the shell fragment groove

132: sour jujube piece groove

15: shell fragment

16: the sour jujube piece

161: ratchet

20: the ratchet tube

21: wheel-shaped body

22: teeth groove

221: leading edge

222: abutment edge

30: axle

40: the ratchet tube

42: the sour jujube piece

422: ratchet

50: flower hub seat

51: groove

52: teeth groove

522: leading edge

524: abutment edge

Embodiment

Below only with embodiment the enforcement aspect that the utility model is possible being described, so is not the category in order to the desire protection of restriction the utility model institute, chats bright in advance.

Please refer to Fig. 1, Figure 1A and Fig. 2, the utility model provides a kind of hub ratchet wheel device, include an axle 30, a flower hub seat 10 and a ratchet tube 20, this flower hub seat 10 is to be sheathed on this axle 30 rotationally, and this ratchet tube 20 also is sheathed on this axle 10 rotationally.

These flower hub seat 10 1 ends are arranged with and form a groove 12, this groove 12 has an inner peripheral surface, the inner peripheral surface of this groove 12 is provided with several and holds

piece groove

13,14, preferable, holding

piece groove

13,14 and have six, those hold

piece groove

13,14 and are divided into two groups, these two groups are held

piece groove

13,14 and arrange equidistantly separately, these two groups are held

piece groove

13,14 and arrangement at each interval, more clearly say, wherein one group of appearance piece groove 13 is that interspersed another group that is arranged in is held between the piece groove 14.Each holds

piece groove

13,14 and has a shell fragment groove 131 and a sour jujube piece groove 132, this sour jujube piece groove 132 is provided with in opposite directions with the opening of this shell fragment groove 131, setting-in is provided with a shell fragment 15 in each shell fragment groove 131, then be equiped with a sour jujube piece 16 in each sour jujube piece groove, can be provided with two, three or above ratchet 161 in this sour jujube piece 16 respectively, each shell fragment 15 is resisted against sour jujube piece 16, and the active force of sour jujube piece 16 resilient abutment outside holding the piece groove is provided.

This ratchet tube 20 is provided with a wheel-shaped body 21 towards an end of this flower hub seat 10, this wheel-shaped body 21 is inserted in this groove 12, this wheel-shaped body 21 has an outer circumferential face, uniformly-spaced be formed with several teeth groove 22 in this outer circumferential face, the preferable teeth groove 22 that is formed with more than 60, be decided to be a tooth pitch with the distance bound between adjacent two teeth groove 22, wherein each teeth groove 22 is made of a leading edge 221 and an abutment edge 222.

Please refer to Fig. 3 and Fig. 4, wheel-shaped body 21 is inserted in behind this groove 12, each sour jujube piece 16 is subjected to shell fragment 15 effects, flexibly outside holding the piece groove, replace, make its ratchet 161 correspondences be resisted against teeth groove 22 and can be meshed with teeth groove 22, be resisted against the abutment edge 222 in the teeth groove 22, wherein, those hold piece groove 13, any holds piece groove 13 to be adjacent the distance of holding piece groove 14 is the non-integral multiple of aforementioned tooth pitch in 14, preferable, its adjacent distance be aforementioned tooth pitch be divided into after half odd number doubly, by this, those sour jujube pieces 16 can all not mesh with teeth groove 22 simultaneously, mesh with teeth groove 22 alternately but be divided into two groups.

Hold above-mentioned, the utility model utilizes two groups of sour

jujube piece groove

13,14 and sour jujube pieces 16 of being crisscross arranged, when trampling again when the idle running of hub ratchet wheel device and for the rider, can promote for one group of sour jujube piece, 16 engagements near the abutment edge 222 of teeth groove 22, make sour jujube piece 16 and the preceding required mobile distance of teeth groove 22 engagements not need the complete length that reaches leading edge 221, only need to move one section short distance and can make sour jujube piece 16 and teeth groove 22 engagements, and can reach the effect of this flower hub seat 10 of quick drive, bicycle can be driven swimmingly advance.

In other possible embodiments of the utility model, also those teeth groove 22 can be changed the inner peripheral surface of being located at this groove 12, and change the outer circumferential face of those appearance piece grooves 13 and sour jujube piece being located at this wheel-shaped body 21.

In addition, the utility model utilizes two groups of sour

jujube piece grooves

13,14 and sour jujube piece 16 thereof to contact with teeth groove 22, evenly force in teeth groove 22, can increase the stability of engagement driving, and each sour jujube piece 16 has plural ratchet 161, and correspondence is provided with a plurality of teeth groove 22, can be for the ratchet 161 and the degree of depth of teeth groove 22 are dwindled, and maintain certain structure intensity and engagement ability, reach the effect of the dimension reduction that makes colored hub seat 10.

In sum, hub ratchet wheel device provided by the utility model can have the using effect that faster meshes with transmission, and can less size provide complete function of use, and is real in having the progressive effect of innovation.

Claims

1. hub ratchet wheel device is characterized in that it comprises:

One axle;

2. hub ratchet wheel device as claimed in claim 1 is characterized in that those teeth groove are positioned at the outer circumferential face of described wheel-shaped body, and those hold the inner peripheral surface that the piece groove is positioned at described groove.

3. hub ratchet wheel device as claimed in claim 1 is characterized in that, described groove has the described teeth groove more than 60; Described sour jujube piece has the ratchet that meshes with corresponding teeth groove more than two.

4. hub ratchet wheel device as claimed in claim 3 is characterized in that, described sour jujube piece has three described ratchets.

5. hub ratchet wheel device as claimed in claim 2 is characterized in that, described groove has the described teeth groove more than 60; Described sour jujube piece has the ratchet that meshes with corresponding teeth groove more than two.

6. hub ratchet wheel device as claimed in claim 5 is characterized in that, described sour jujube piece has three described ratchets.

7. as each described hub ratchet wheel device in the claim 1 to 6, it is characterized in that described sour jujube piece has six.

8. hub ratchet wheel device as claimed in claim 7 is characterized in that, described appearance piece groove has a sour jujube piece groove and a shell fragment groove, the opening of this sour jujube piece groove and this shell fragment groove be provided with in opposite directions and respectively setting-in be provided with described sour jujube piece and and peak at the shell fragment of this sour jujube piece with elastic force.

9. as each described hub ratchet wheel device in the claim 1 to 6, it is characterized in that, described appearance piece groove is provided with a sour jujube piece groove and a shell fragment groove, the opening of this sour jujube piece groove and this shell fragment groove be provided with in opposite directions and respectively setting-in be provided with described sour jujube piece and and peak at the shell fragment of this sour jujube piece with elastic force.