CN219549423U

CN219549423U - Rear axle clutch

Info

Publication number: CN219549423U
Application number: CN202320517985.XU
Authority: CN
Inventors: 赵志坚
Original assignee: Individual
Current assignee: Zhao Wei
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-08-18
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a rear axle clutch which comprises a rear axle, a hub, a left ratchet wheel, a right ratchet wheel, a cylindrical spring, a plane push wheel, a bearing shell and a power input wheel, wherein the rear axle is arranged in the hub through a first bearing and a second bearing, one end of the hub is provided with the bearing shell, the bearing shell is sleeved on the rear axle through a third bearing, the bearing shell is in threaded connection with the power input wheel, the left ratchet wheel and the right ratchet wheel are respectively sleeved on the rear axle, the outer ring of the left ratchet wheel is in threaded connection with the rim of the hub, the cylindrical spring is precompressed between the left ratchet wheel and the right ratchet wheel, one side of the right ratchet wheel is provided with the plane push wheel, and a ratchet retainer ring is in threaded connection between the plane push wheel and the right ratchet wheel on the rear axle. Compared with the prior art, the ratchet sleeve is changed into the ratchet check ring, and the ratchet check ring is in threaded connection with the rear shaft, so that the right ratchet can be effectively prevented from moving rightwards, and the situation that the right ratchet and the left ratchet cannot be combined due to slipping of the ratchet sleeve is avoided.

Description

Rear axle clutch

Technical Field

The utility model relates to the technical field of clutches, in particular to a rear axle clutch for a bicycle.

Background

With the continuous development of society, the variety of bicycles is more and more, and therefore, different rear axle clutches are required to be arranged for different vehicle types to realize different transmission requirements.

The applicant's utility model has publication No.: CN208216916U, entitled: the bicycle rear axle clutch comprises a rear axle, a left flower disc, a ratchet wheel, a plane cam, a right flower disc and a chain wheel, wherein the left flower disc is arranged at one end in a bicycle flower drum, the right flower disc is arranged at the other end in the bicycle flower drum, one end of the rear axle is arranged in the left flower disc, and the other end of the rear axle is arranged in the right flower disc; meanwhile, two ratchet wheels are sleeved on the rear shaft positioned on the left flower disc, one side of one ratchet wheel is provided with a cylindrical spring, and the other ratchet wheel is connected with a ratchet wheel sleeve; the rear axle that is located right flower disc is equipped with planar cam, second bearing and the bearing shell of connection as an organic whole, and planar cam and ratchet cover contact, and left flower disc is connected with right flower disc, sprocket and bearing shell threaded connection, and its theory of operation is: when the chain wheel rotates, the plane cam connected with the chain wheel synchronously rotates, and the spiral inclined surface of the plane cam pushes the second ratchet wheel to the left flower disc, so that the first ratchet wheel is meshed with the second ratchet wheel to drive the rear wheel to advance, and when the chain wheel stops rotating, the cylindrical spring pushes the second ratchet wheel in the meshed state away, and the rear wheel can slide forwards or backwards.

However, after the bicycle is used for a period of time, the ratchet sleeve in the rear axle clutch is easy to be stained with oil, so that the friction force of the ratchet sleeve on the rear axle is reduced, the second ratchet wheel can shift rightwards under the action of the spring force, namely, the ratchet sleeve cannot provide a stopping effect for the right ratchet wheel, therefore, when the power input wheel rotates, the right ratchet wheel can synchronously rotate with the plane pushing wheel, and the spiral inclined plane of the plane pushing wheel cannot push the right ratchet wheel to enable the second ratchet wheel to be combined with the first ratchet wheel, so that the prior art needs to be improved.

Disclosure of Invention

The technical problem solved by the utility model is to provide a rear axle clutch to solve the defects in the background art.

The technical problems solved by the utility model are realized by adopting the following technical scheme:

the utility model provides a rear axle clutch, includes rear axle, flower drum, left ratchet, right ratchet, cylindrical spring, plane push wheel, bearing housing and power input wheel, the rear axle is installed in the flower drum through first bearing and second bearing, and the one end of flower drum is equipped with the bearing housing, and the bearing housing passes through the third bearing suit on the rear axle, and threaded connection has the power input wheel on the bearing housing, left ratchet and right ratchet suit respectively on the rear axle, the outer lane of left ratchet and the rim threaded connection of flower drum, cylindrical spring precompression setting is between left ratchet and right ratchet, and one side of right ratchet is equipped with the plane push wheel that is used for promoting right ratchet and left ratchet meshing, and threaded connection has the ratchet retaining ring that is used for moving spacing to right ratchet right side on the rear axle between plane push wheel and the right ratchet.

Further, the plane pushing wheel is provided with a spiral inclined plane; the right ratchet comprises a right ratchet body, one end of the right ratchet body is provided with a right ratchet meshed with the left ratchet, pushing columns matched with the spiral inclined planes are symmetrically arranged on the other end of the right ratchet body in the radial direction, one side of the middle of the right ratchet body is provided with a middle ratchet facing the ratchet check ring, the ratchet check ring is of a stepped cylindrical structure, and a receiving ratchet matched with the middle ratchet is arranged in the middle of the large end of the ratchet check ring.

Further, when the cylindrical spring is in the precompressed state, the right ratchet wheel and the left ratchet wheel are in a separated state, and the middle ratchet wheel and the receiving ratchet wheel of the right ratchet wheel are in a matched state.

Further, the intermediate ratchet is an incomplete ratchet.

Further, the middle ratchet comprises two sector ratchet teeth which are radially symmetrical around the center hole of the right ratchet body.

Further, the outer ring of the plane pushing wheel is connected with the bearing shell through threads.

Further, the power input wheel is a sprocket or a gear.

Further, one end of the rear axle is provided with an adjusting nut and a locking nut.

Further, the lock nut is a hexagonal nut.

Further, two second bearings are arranged in parallel.

By adopting the technical scheme, the utility model has the following advantages:

1. compared with the prior art, the ratchet sleeve is changed into the ratchet check ring, and the ratchet check ring is in threaded connection with the rear shaft, so that the right ratchet can be effectively prevented from moving rightwards, and the situation that the right ratchet and the left ratchet cannot be combined due to slipping of the ratchet sleeve is avoided.

2. Through setting up adjusting nut and lock nut in the one end of flower-drum, adjusting nut is used for adjusting the position of rear axle, and the left ratchet of being convenient for is finely tuned with right ratchet clearance, and lock nut is used for fixing adjusting nut's position.

3. The middle of the rear axle is rotatably supported by two parallel second bearings, so that the supporting strength and the rotation precision of the rear axle are improved.

4. Different power input modes can be adapted by changing the type of the power input wheel.

Drawings

FIG. 1 is a cross-sectional view of a preferred embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a flat push wheel in accordance with a preferred embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a ratchet retaining ring in a preferred embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a right ratchet wheel in accordance with a preferred embodiment of the present utility model;

FIG. 5 is a right side view of FIG. 4;

FIG. 6 is a left side view of FIG. 4;

FIG. 7 is a side view of the left ratchet of the present utility model;

FIG. 8 is a cross-sectional view of the left ratchet of the present utility model;

in the figure: rear axle 1, power input wheel 2, third bearing 3, plane push wheel 4, ratchet retainer 5, right ratchet 6, left ratchet 7, cylindrical spring 8, second bearing 9, flower-drum 10, first bearing 11, adjusting nut 12, lock nut 13, bearing housing 14, spiral bevel 41, bearing ratchet 51, right ratchet body 61, right ratchet 62, push post 63, middle ratchet 64.

Detailed Description

The utility model may be further described by the following examples, however, the scope of the utility model is not limited to the following examples: it is to be understood that the embodiments described herein are disclosed by way of illustration only and that the utility model is not intended to be limited in scope to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. Furthermore, in describing the preferred embodiments, specific terminology will be resorted to for the sake of clarity. It is to be understood that each specific term includes all technical equivalents that operate in a similar manner to accomplish a similar purpose.

Examples: referring to the rear axle clutch shown in fig. 1, the rear axle clutch is mainly applied to various bicycles, and is particularly suitable for bicycles which can be ridden in forward and backward directions.

The utility model provides a rear axle clutch, including rear axle 1, flower-drum 10, left side ratchet 7, right side ratchet 6, cylindrical spring 8, plane push wheel 4, bearing housing 14 and power input wheel 2, rear axle 1 installs in flower-drum 10 through first bearing 11 and second bearing 9, preferably, second bearing 9 has two, two second bearing 9 set up side by side, the back axle's that can improve support strength, the one end of flower-drum 10 is equipped with bearing housing 14, bearing housing 14 overlaps on rear axle 1 through third bearing 3, threaded connection has power input wheel 2 on the bearing housing 14, power input wheel 2 can be sprocket, gear, belt pulley etc. as long as can be used for power transmission, can adapt to different power input modes through changing the type of power input wheel 2, left side ratchet 7 and right ratchet 6 overlap respectively and adorn on rear axle 1, the outer lane of left side ratchet 7 and the outer lane threaded connection of flower-drum 10, outer periphery on the opposite end of left side ratchet 7 and right side ratchet 6 has the ratchet respectively, cylindrical spring 5 is provided with the precompression the bearing housing 6 between left side ratchet 7 and right side ratchet 6 and is equipped with the ratchet wheel 6 and is used for the side to push wheel 4 is connected with the plane push wheel 4 through the side of the ratchet to the side of the ratchet is connected with the side of the ratchet 4 through the side push wheel 4 to the thread.

As shown in fig. 2, the flat push wheel 4 is shown, and the flat push wheel 4 is provided with a spiral inclined surface 41; as shown in fig. 4-6, which are right ratchet 6, fig. 7 and 8, which are left ratchet 7, wherein: the right ratchet 6 includes right ratchet body 61, and right ratchet body 61's one end has right ratchet 62 with left ratchet meshing, and the radial symmetry of right ratchet body 61 other end is equipped with the pushing post 63 with spiral inclined plane cooperation 41, and the middle one side of right ratchet body 61 is equipped with the intermediate ratchet 64 towards ratchet retaining ring 5, ratchet retaining ring 5 is the ladder cylindricality structure, has in the middle of the big end of ratchet retaining ring 5 and holds ratchet 51 with intermediate ratchet 64 complex, and intermediate ratchet 64 can cooperate with holding ratchet 51 when cylinder spring 5 kick-backs to move limit to right ratchet 6.

In the present embodiment, as shown in fig. 6, the intermediate ratchet 64 is an incomplete ratchet, and more specifically, the intermediate ratchet 64 includes two sector-shaped ratchet teeth radially symmetrical around the center hole of the right ratchet body 61; the middle ratchet 64 adopts two sector ratchet teeth, so that when the right ratchet wheel 6 is meshed with the left ratchet wheel 7, the middle ratchet 64 is separated from the receiving ratchet 51 of the ratchet check ring 5.

Further, when the cylindrical spring 5 is in the pre-compressed state, the right ratchet teeth 62 and the left ratchet teeth are in a separated state, and the middle ratchet teeth 64 of the right ratchet are in a fitted state with the receiving ratchet teeth 51.

Further, one end of the rear axle 1 is provided with an adjusting nut 12 and a locking nut 13, the adjusting nut 12 is used for adjusting the position of the rear axle 1, so that the clearance between the left ratchet and the right ratchet is convenient to fine-tune, the locking nut 13 is used for fixing the position of the adjusting nut 12, and the locking nut 13 is preferably a hexagon nut.

The utility model has the following concrete installation and working processes: one end of a bicycle hub 10 is installed into a second bearing 9 and a left ratchet wheel 7 to be fastened by threads, the other end of the bicycle hub is installed into a first bearing 11, an inner hole is installed into an adjusting nut 12, one end of a rear shaft 1 is screwed into the adjusting nut 12, a cylindrical spring 8 and a right ratchet wheel 6 are installed from the other end of the rear shaft 1, a ratchet retainer ring 5 is screwed into the other end of the rear shaft 1 to meet the design requirement, a plane push wheel 4 is installed, a power input wheel 2 is fastened by a locking nut 13, the adjusting nut 12 is rotated, the left ratchet wheel 7 installed in the hub 10 is adjusted to keep a design requirement gap with the right ratchet wheel 6, the locking nut 13 is fastened, and when the power input wheel 2 rotates to drive the plane push wheel 4 to rotate, the right ratchet wheel 6 is pushed to be meshed with the left ratchet wheel 7 fastened in the hub 10, and the front of a bicycle is driven; the power input wheel 2 stops rotating, the right ratchet wheel 6 is sprung by the cylindrical spring 8, the bicycle can slide, no ratchet resistance or noise exists during sliding, and the labor is saved.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a rear axle clutch, includes rear axle (1), flower-drum (10), left ratchet (7), right ratchet (6), cylindrical spring (8), plane push wheel (4), bearing housing (14) and power input wheel (2), rear axle (1) are installed in flower-drum (10) through first bearing (11) and second bearing (9), one end of flower-drum (10) is equipped with bearing housing (14), bearing housing (14) are through third bearing (3) suit on rear axle (1), threaded connection has power input wheel (2) on bearing housing (14), characterized in that, the outer lane of left ratchet (7) and right ratchet (6) are respectively the suit on rear axle (1), the rim threaded connection of left ratchet (7) and flower-drum (10), cylindrical spring (8) precompression sets up between left ratchet (7) and right ratchet (6), one side of right ratchet (6) is equipped with and is used for promoting right ratchet (6) and left ratchet (7) meshing plane wheel (4), rear axle (1) is located ratchet (6) and is used for moving between ratchet (5) and pushes away the thread to right ratchet.

2. A rear axle clutch according to claim 1, characterized in that the flat push wheel (4) has a spiral bevel (41); the right ratchet wheel (6) comprises a right ratchet wheel body (61), one end of the right ratchet wheel body (61) is provided with a right ratchet wheel ratchet (62) meshed with the left ratchet wheel, pushing columns (63) matched with the spiral inclined planes (41) are symmetrically arranged on the radial direction of the other end of the right ratchet wheel body (61), one side of the middle of the right ratchet wheel body (61) is provided with middle ratchets (64) facing to the ratchet wheel check ring (5), the ratchet wheel check ring (5) is of a stepped cylindrical structure, and the middle of the large end of the ratchet wheel check ring (5) is provided with bearing ratchets (51) matched with the middle ratchets (64).

3. A rear axle clutch according to claim 2, characterized in that further, the right ratchet teeth (62) and the left ratchet teeth are in a separated state when the cylindrical spring (8) is in a pre-compressed state, and the intermediate ratchet teeth (64) of the right ratchet teeth and the receiving ratchet teeth (51) are in a fitted state.

4. A rear axle clutch according to claim 2, characterized in that the intermediate ratchet (64) is an incomplete ratchet.

5. A rear axle clutch according to any one of claims 2 or 4, characterized in that the intermediate ratchet (64) comprises two sector-shaped ratchet teeth radially symmetrical around the centre aperture of the right ratchet body (61).

6. A rear axle clutch according to claim 1, characterized in that the outer ring of the flat push wheel (4) is connected to the bearing housing (14) by means of a screw thread.

7. A rear axle clutch according to claim 1, characterized in that the power input wheel (2) is one of a sprocket, a gear or a pulley.

8. A rear axle clutch according to claim 1, characterized in that one end of the rear axle (1) is provided with an adjusting nut (12) and a lock nut (13).

9. A rear axle clutch according to claim 8, characterized in that the lock nut (13) is a hexagonal nut.

10. A rear axle clutch according to claim 1, characterized in that there are two second bearings (9), the two second bearings (9) being arranged side by side.