WO2007121621A1

WO2007121621A1 - Central axle control core shifting apparatus used in a speed variator

Info

Publication number: WO2007121621A1
Application number: PCT/CN2006/001128
Authority: WO
Inventors: Baowu Ou Yang
Original assignee: Baowu Ou Yang
Priority date: 2006-04-20
Filing date: 2006-05-29
Publication date: 2007-11-01
Also published as: CN1833951A

Abstract

A central axle control core shifting apparatus used in a speed variator includes a central axle control core and a connecting core for the first and second flywheels. The connecting core for the first and second flywheels is sliding fitted on the central axle control core coaxially. The connecting core has two equally spaced grooves for receiving the ratchet pawls which have upper and lower teeth, and it also has a coil spring groove of the second flywheel, which receives a coil spring of the second flywheel. The central axle control core is installed in the central axle tube of the bicycle to achieve reliable speed variation of the central axle. It has the advantages of avoiding the occurrence of auto-shifting after the bicycle slides for a while, achieving reliable speed variation, and having simple and reasonable structure.

Description

Transmission shaft control core shifting device

The present invention relates to a transmission, which is a transmission center shifting core shifting device.

Background technique

The Applicant has made many improvements to the structure of the transmission. Although these improved structures have many advantages, they have found some deficiencies in use. This application is for the applicant

The structure of the "Upper and Lower Double Pawl Flywheel Combination Automatic Transmission" applied on June 23, 2004 was improved. The upper and lower double-toothed ratchet flywheel automatic transmission is installed in the rear axle of the bicycle. The shortcomings found in use are: When the bicycle is taxied, when the bicycle is re-buckling, the transmission is prone to automatic shifting, which may become in the high-speed position. It may also be changed to a low-speed gear; and the phenomenon that the shifting is not smooth may occur, which brings more inconvenience to the user. Summary of the invention

The object of the present invention is to provide a shaft control core shifting device in a transmission, which is installed on a middle axle tube on a bicycle frame, and is reliably shifted on the middle axle, and does not have an automatic shifting phenomenon after the bicycle is slid, and the shifting is smooth. , the structure is simplified and reasonable.

The present invention achieves the above object, and is realized by the following technical solutions: a shaft control core shifting device in a transmission, including a central axis control, a first and a second flywheel connecting body core, a concentric coupling on the central axis control core, and a first and second flywheel connecting body core The first and second flywheels are machined with two uniformly distributed two flywheels on the upper and lower double-toothed pawl slots. The two flywheels are mounted on the upper and lower double-toothed pawl slots. Two flywheels are mounted on the upper and lower double-toothed paws. Processing a two flywheel spring groove, two flywheels Two flywheel coil springs are installed in the spring slot. Two two flywheel ratchet grooves are provided on the central axis control core, and a flywheel ratchet groove which is offset from the two flywheel ratchet grooves by 90° is opened. A Φ 3 ball track is opened on the central axis control core. Two flywheel spring stop blocks are installed on the first and second flywheels. One and two flywheels are provided with two flywheels on the upper and lower double-toothed pawl slots, and a flywheel is mounted on the upper and lower double-toothed pawl slots to install a flywheel up and down double-toothed pawl. A flywheel spring slot is formed on the first and second flywheels, and a flywheel spring is installed in a flywheel spring slot. A flywheel spring stop block is mounted on the first and second flywheels. The first Φ 3 ball path is opened on the outer diameter of the right end of the first and second flywheels, and the second Φ3 ball path is opened on the inner diameter.

The positive effect of the invention is as follows: it is installed at the central shaft tube, and can realize reliable shifting. When the vehicle is slid and then brakes, there is no self-disengagement and shifting phenomenon; the shifting gear is smooth and free, the structure is simple, the cost is low, etc. .

DRAWINGS

1 is a schematic structural view of a cross-sectional view taken along line AA of FIG. 1. FIG. 3 is a schematic cross-sectional view of a BB of FIG. 1; FIG. 4 is a schematic diagram of the present invention and a planetary gear shifting system. A schematic view of the structure installed in the axle tube of the bicycle together.

In the drawing, 1 is the central axis control core, la is the crank mounting, lb is the thread, lc is the two flywheel ratchet groove, Id is a flywheel ratchet groove, le is the Φ 3 ball track, 2 is the first and second flywheel One-piece core, 2a is the upper and lower double-toothed pawl groove of the two flywheels, 2b is a flywheel upper and lower double-toothed pawl groove, 2c is the two flywheel spring groove, 2d is the two flywheel ring spring stop block, 2e is a flywheel ring. The spring groove, 2f is a flywheel spring stop block, 2g is the first Φ3 ball track, 2h is the second Φ ball track, 3 is a flywheel upper and lower double tooth pawl, 3a is the upper teeth, 3b is the lower teeth, 4 Is a fly The rim spring, 5 is the upper and lower double paws of the two flywheels, 5a is the upper flywheel of the two flywheels, 5b is the lower teeth of the second flywheel, 6 is the second flywheel coil spring, 7 is the Φ 3 ball, 8 is the dust cover, 9 is a Flywheel housing, 9a—flywheel ratchet, 10 is sprocket and triple flywheel housing, 11 is right end cover, 12 is two flywheel core and planetary carrier, 12a is two flywheel ratchet, 13 is planetary gear shaft, 14 is 10 teeth Planetary gears, 15 is the middle axle tube, 16 is the 48 internal gear and the three flywheel core, 17 is the three flywheel coil spring, 18 is the three flywheel lying pawl, 19 is the left end cover and the 28 tooth gear, 20 is the Φ 5 ball, 21 is a sealing nut and 22 is a lock nut.

detailed description

The shaft control core shifting device of the transmission of the present invention comprises a center shaft control core 1, a first and a second flywheel connecting body core 2, and a Φ3 ball track le on the center shaft control core 1 is filled with Φ3 balls 7. The central axis control core 1 is mounted on the first and second flywheels with the concentric core 2, and the first and second flywheels are connected with two uniformly distributed two flywheels, two upper and lower double tooth pawl grooves 2a, and two flywheels. The two flywheel upper and lower double tooth pawls 5 are installed in the pawl groove 2a, and the first and second flywheels are connected with a two flywheel spring groove 2c, and two flywheel springs 6 are installed in the second flywheel spring groove 2c. The right end of the central axis control core 1 is provided with a crank groove la, and the left end is provided with a thread lb. Two flywheel ratchet grooves lc are formed on the central axis control core 1, and a flywheel ratchet groove ld which is offset from the two flywheel ratchet grooves lc by 90° is opened. A Φ 3 ball track le is opened on the center axis control core 1. Two flywheel spring stop blocks 2d are mounted on the first and second flywheels. One and two flywheels are connected with two flywheels on the upper and lower double-toothed pawl slots 2b, and one flywheel is mounted on the upper and lower double-toothed pawl slots 2b with a flywheel up and down double-toothed pawl 3. A flywheel spring slot 2e is formed on the first and second flywheels, and a flywheel spring 4 is mounted in a flywheel spring slot 2e. One or two flywheels connected to the core 2 A flywheel spring stop block 2f is mounted thereon. The first Φ 3 ball path 2g is opened on the outer diameter of the right end of the first and second flywheels, and the second Φ 3 ball track 2h is opened on the inner diameter.

In the embodiment of the present invention, the central axis control core 1 is machined from left to right with a crank mounting hole, a thread lb, two uniformly distributed two flywheel ratchet grooves lc, two paths and a flywheel ratchet groove lc staggered by 90°. A flywheel ratchet groove Id and an inner Φ3 ball track le and a crank mounting hole of the cloth; the Φ3 ball track le on the center shaft control core 1 of the present invention is filled with Φ3 balls. The Φ 3 ball track le on the center axis control core 1 may not be mounted with the Φ 3 ball 7. One or two flywheels are connected to the core 2 from left to right. There are two uniformly distributed two flywheels. The upper and lower double-toothed pawl slots 2a are equipped with two flywheels. The upper and lower double-toothed pawls are 5, and a two-flywheel spring groove is processed. Installed with two flywheel springs 6 card holding two two flywheels up and down double tooth pawl 5 and punching riveting two flywheel spring stop block 2d, processing a two-wheeled flywheel up and down double tooth pawl groove 2b Previous flywheel upper and lower double tooth pawl 3, processed with a flywheel ring spring groove 2e loaded with a flywheel spring 4 card two flywheel upper and lower double tooth pawl 4 and punched riveted a flywheel spring stop block 2f ; -, the second flywheel of the body core 1 has a first Φ 3 ball track 2g on the outer diameter of the body, and the inner diameter is processed with the second Φ 3 ball track 2h and filled with the Φ 3 ball 7, the assembled one The second flywheel connecting body core 2 is fitted into the central axis control core 1 from left to right concentrically, and the second flywheel lower teeth 5b of the upper and lower double tooth pawls 5 of the two flywheels are engaged with the second flywheel ratchet groove lc. The lower teeth 3b of a flywheel upper and lower double pawl 3 and a flywheel ratchet groove Id are engaged. The assembled body of the present invention is fitted from right to left concentrically into the assembled flywheel housing 9, sprocket and triple flywheel housing 10, right end cover 11, two flywheel housings and planet carrier 12, planetary gear shaft 13 , 10 planetary gears 14, 48 internal gears and three flywheel cores 16, three flywheel springs 17, three flywheels After the horizontal pawl 18, the left end cover and the 28 tooth gear 19, the middle shaft tube 15 of the Φ 3 ball 7 are assembled, the Φ 5 ball 20 is assembled, and the sealing nut 21 and the lock nut 22 are screwed and adjusted to make a flywheel up and down. The upper teeth 3a of the double tooth pawl 3, the second flywheel upper teeth 5a of the upper and lower double tooth pawls 5, the three flywheel lying pawls 18 and a flywheel ratchet 9a, the second flywheel ratchet 12a, the sprocket and the three flywheel respectively The three flywheels on the outer casing 10 are ratcheted and finally the dust cover is attached.

The invention is mounted for use in a transmission within a center axle tube 15 of a bicycle or tricycle. When the slow gear is riding, the crank pedal cranks the middle shaft control core 1 to rotate, and at this time, a flywheel ratchet groove Id engages the lower teeth 3b of the upper and lower double tooth pawls 3 of the flywheel, thereby making a flywheel upper and lower double teeth After the pawl 3 is lifted up, the upper tooth 3a is engaged with a flywheel ratchet 9a, thereby driving the first and second flywheels to the core 2, the sprocket and the three flywheel housing 10, the chain, the flywheel and the rear wheel to rotate; when the speed change is required The reverse shaft crank causes the center shaft control core 1 to be inverted by 90°, at which time one flywheel upper and lower double tooth pawl 3 is closed, and the second flywheel upper and lower double tooth pawl 5 two flywheel lower teeth 5b and two flywheel ratchet teeth lc The occlusal, the two flywheel upper teeth 5a and the two flywheel ratchets 12a are engaged, and then the slewing cranks drive the central axis control core 1, the first and second flywheel connecting cores 2, the two flywheel housings and the planetary carrier 12 to 1:1 The rotation speed rotates, and simultaneously drives the 10-tooth planetary gears 14, 48 internal gears and the three-flying wheel core 16, the sprocket and the three-wheel housing 10, the chain, the flywheel and the rear wheel to increase the speed by 1.583 times. If you need to slow down again, turn the crank handle to the crankshaft so that the center axis control core 1 is turned 90° and then the crank is turned to the crank.

Claims

Rights request

1. Transmission shaft control core shifting device, including central shaft control core (1), first and second flywheel connecting body core (2), characterized in that: the central shaft control core (1) is concentrically mounted on the first and second Flywheel connecting body core (2), one or two flywheel connecting body core (2) is processed with two uniform two flywheel upper and lower double tooth pawl groove (2a), two flywheel upper and lower double tooth pawl groove (2a) Install the two flywheel upper and lower double tooth pawls (5), one and two flywheels connected to the core (2) with a two flywheel spring groove (2c), and two flywheel spring slots (2c) with two flywheel springs (6) ). '

A transmission center shifting core shifting device according to claim 1, wherein: the right end of the center shaft control core (1) is provided with a crank mounting hole (1), and the left end is provided with a thread (lb).

3. The transmission center shifting core shifting device according to claim 1 or 2, characterized in that: the central axle control core (1) is provided with two two flywheel ratchet grooves (lc), and two and two The flywheel ratchet groove (lc) is offset by a 90° flywheel ratchet groove (ld).

The transmission center shifting core shifting device according to claim 3, characterized in that: the central axis control core (1) is provided with a Φ 3 ball track (le).

The transmission center shifting core shifting device according to claim 1, characterized in that: the first and second flywheel connecting body cores (2) are provided with two flywheel coil spring stopping blocks (2d).

6. The transmission center shifting core shifting device according to claim 5, wherein: one of the two flywheel body cores (2) defines two flywheel upper and lower double tooth pawl slots (2b), one flywheel Install a flywheel upper and lower double pawl (3) in the upper and lower double tooth pawl groove (2b).

7. The transmission center shifting core shifting device according to claim 5, wherein: a flywheel ring spring (2e) is provided on the first and second flywheel body cores (2), and a flywheel spring slot (2e) A flywheel coil spring (4) is installed inside.

The transmission center shifting core shifting device according to claim 6 or 7, wherein: the first and second flywheel connecting body cores (2) are provided with a flywheel coil spring stopping block (2f).

9. The transmission center shifting core shifting device according to claim 8, wherein: the first Φ 3 ball path (2g) is opened on the outer diameter of the right end of the first and second flywheel body cores (2), and the inner diameter is Open the second Φ 3 ball path (2h).