A combined wheel-axle structure capable of freely shifting transmission

Abstract

The present invention relates to the field of vehicle accessories, and particularly discloses a combined wheel shaft structure capable of freely shifting transmission, which is composed of a threaded barrel, an inner barrel and an outer wheel hub sleeved together, the threaded barrel is composed of a driving end plate, a positive-spinning barrel, a reverse-spinning barrel and a smoothing barrel with successively decreasing outer diameters, each of the two spinning barrels has a clutch gear plate, the inner barrel is sleeved on the threaded barrel, the inner barrel has two clutch retaining rings, the clutch gear plate on the positive-spinning barrel is located between the two clutch retaining rings, the smoothing barrel is equipped with a smoothing disc, the smoothing disc has a restraining fork, the restraining fork is inserted into the two clutch gear plates, the smoothing disc is outside a fixed blocking disc, and the outer wheel hub is sleeved outside the inner barrel. The assembled invention can rotate both forward and reverse.

Description

Technical Field

[0001] The invention relates to the field of vehicle accessories, and in particular to a combined wheel axle structure capable of freely shifting transmission. Background Art

[0002] At present, traditional mechanical drive axles include the following two types: fixed dead flywheel drive axles and ratchet live flywheel drive axles. These two types of drive axles are widely used in the field of transportation, but due to their own structural characteristics, they have their own fatal defects: the fixed dead flywheel drive axle can only rotate forward and rotate backward in the positive direction, but does not have the ability to slide in neutral; the ratchet live flywheel drive axle can only rotate forward and slide forward in the neutral direction, but does not have the ability to rotate backward in the negative direction. Summary of the invention

[0003] In order to make up for the defects of the prior art, the present invention provides a combined axle structure that has the functions of a fixed dead flywheel transmission axle and a ratchet type live flywheel transmission axle, that is, a freely shiftable transmission that allows the wheel hub to slide in neutral inertia.

[0004] The present invention is achieved through the following technical solutions:

[0005] The wheel shaft structure of the present invention can be freely shifted, characterized in that it comprises an outer wheel hub and a threaded cylinder, each of the two ends of the outer wheel hub has a section with an inner diameter larger than the inner diameter of the middle section, and each of the parts with the larger inner diameter is equipped with a bearing; the threaded cylinder comprises a convex driving end plate, a positive rotation cylinder, a reverse rotation cylinder and a smooth rotation cylinder which are integrally formed in sequence, the outer diameter of the positive rotation cylinder is larger than the outer diameter of the reverse rotation cylinder, the outer diameter of the reverse rotation cylinder is larger than the outer diameter of the smooth rotation cylinder, the positive rotation cylinder is threadedly connected to the positive rotation clutch gear plate, and the reverse rotation cylinder is threadedly connected to the reverse rotation clutch gear plate, the positive rotation clutch gear plate and the reverse rotation clutch gear plate are both provided with two through holes, the smooth rotation cylinder is equipped with a smooth rotation disk, and two parallel check forks are provided on the side of the smooth rotation disk facing the driving end plate, and the check forks pass through the through holes of the reverse rotation clutch gear plate and the positive rotation clutch gear plate in sequence. The wheel hub is annularly fixed to the wheel hub, and the cam is adapted to engage with the drive end plate of the drive tube and the camshaft of the drive tube.

[0006] A rubber ring is provided on one side of the forward rotation clutch gear disc and the reverse rotation clutch gear disc facing the driving end plate.

[0007] The outer surface of the fixed anti-rotation disk is provided with a fixing pin for connecting with external equipment.

[0008] The inner cylinder is composed of two semi-cylinders connected together.

[0009] The beneficial effects of the present invention are:

[0010] When the driving end plate rotates forward, since the threaded cylinder can only rotate axially relative to the inner cylinder, and the forward clutch gear plate and the reverse clutch gear plate cannot rotate relative to each other under the action of the restraining fork, the forward clutch gear plate and the reverse clutch gear plate move in opposite directions. At this time, the inner cylinder and the outer hub do not rotate. When the reverse clutch gear plate leaves the reverse clutch retaining ring and the forward clutch gear plate is pressed against the forward clutch retaining ring, the positions of the forward clutch gear plate and the reverse clutch gear plate can no longer change in a relative straight line. At this time, the opposite-polar attraction of the two groups of magnets on the fixed anti-rotation plate and the smooth rotation plate begins to break the suction balance, so that when the driving end plate continues to rotate, the inner cylinder rotates accordingly; when each clutch gear plate is aligned with one of the corresponding When the clutch retaining ring is tightly attached, that is, the relationship between the driving end plate and one of the shift plates is a screw-tightening relationship, that is, when the forward-rotation clutch shift plate is tightly attached to the forward-rotation clutch retaining ring of the inner tube, the inner tube of the forward-rotation clutch retaining ring is also clamped at the same time, and then the flange at the outer mouth of the inner tube clamps the outer hub, that is, the outer hub is driven to rotate at the same time, thereby driving the wheel to rotate forward; conversely, when the driving end plate is reversed, the forward-rotation clutch shift plate and the reverse-rotation clutch shift plate move relative to each other, and the forward-rotation clutch shift plate leaves the forward-rotation clutch retaining ring until the reverse-rotation clutch shift plate is tightly attached to the reverse-rotation clutch rear retaining ring, thereby clamping the inner tube of the reverse-rotation clutch retaining ring, and the driving end plate drives the inner tube to reverse, thereby driving the outer hub and the wheel to reverse; the smooth rotating disk rotates synchronously with the inner tube and the outer hub.

[0011] During the operation of the present invention, the fixed anti-rotation disk is permanently immobile, and the only effect of the fixed anti-rotation disk magnet group on the smooth disk magnet group is to prevent the smooth disk from rotating by the attraction of the opposite poles of the magnet group NS, so as to achieve the rotation of the driving end plate while the restraining fork and the positive rotation clutch gear plate and the reverse rotation clutch gear plate only move straight relative to or opposite to each other, instead of rotating synchronously with the driving end plate. Until one of the clutch gear plates is in close contact with the corresponding clutch retaining ring, the fixed anti-rotation disk magnet group and the smooth disk magnet group break the balance with each other, and when the present invention rotates forward or reversely as a whole, the opposite pole attraction of the left and right magnet groups is no longer relatively controlled, and the smooth disk restraining fork and the positive and negative clutch gear plates synchronously follow the driving end combination to rotate forward or reverse.

[0012] The present invention can also achieve neutral sliding rotation. The so-called neutral sliding rotation refers to inertial separation, that is, when the present invention rotates normally as a whole, the driving end plate stops rotating and remains stationary. Since the inner cylinder and the outer hub of the wheel axle are still rotating inertially, one of the retaining rings of the inner cylinder actively drives the instantly stopped fitting gear plate to rotate synchronously while rotating inertially. Then, at the same time, the gear plate rotates synchronously along the silk path of the silk cylinder where it is located, and automatically separates from the retaining ring corresponding to the inner cylinder. This is the formation of the neutral gap, that is, the outer hub can be allowed to slide in neutral. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of a threaded barrel;

[0016] Figure 3 It is a schematic diagram of the structure of the semi-inner cylinder;

[0017] Figure 4 for Figure 3 A right view structural diagram of ;

[0018] Figure 5 is a schematic diagram of the cross-sectional structure of the outer hub;

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the smooth rotating disk;

[0020] Figure 7 for Figure 6 Schematic diagram of the left view structure;

[0021] Figure 8 for Figure 7 A right view structural diagram of ;

[0022] Fig. 9 It is a left view structural schematic diagram of a fixed anti-rotation disc;

[0023] Fig.10 It is a schematic diagram of the structure of the reverse rotation clutch gear plate;

[0024] Fig.11 It is a schematic diagram of the structure of the positive rotation clutch gear plate.

[0025] In the figure, 1 is a connecting part, 2 is a driving end plate, 3 is a forward-rotating wire drum, 4 is a reverse-rotating wire drum, 5 is a smooth rotating drum, 6 is a through hole, 7 is a rubber ring, 8 is a forward-rotating clutch gear plate, 9 is a reverse-rotating clutch gear plate, 10 is a smooth rotating disk, 11 is a middle shaft, 12 is a restraining fork, 13 is an inner cylinder, 14 is a forward-rotating clutch retaining ring, 15 is a reverse-rotating clutch retaining ring, 16 is a magnet, 17 is a fixed anti-rotation disk, 18 is a fixed bayonet, 19 is an outer hub, 191 is a middle part, 192 is a part at both ends, 20 is a bearing, 21 is a flange, and 22 is a washer. DETAILED DESCRIPTION

[0026] The accompanying drawings are specific embodiments of the present invention. Figures 1 to 11 As shown, the combined wheel shaft structure capable of freely shifting transmission comprises a middle shaft 11, a threaded barrel, an inner barrel 13, a clutch plate, a fixed anti-rotation plate 17 and an outer wheel hub 19, wherein the middle shaft 11 passes through the middle of the integral structure composed of the threaded barrel, the inner barrel 13, the clutch plate, the fixed anti-rotation plate 17 and the outer wheel hub 19, wherein:

[0027] The outer hub 19 includes two end portions 192 and a middle portion 191 . The inner diameters of the two end portions 192 are larger than the inner diameter of the middle portion 191 , so that a bearing 20 can be placed in each of the two end portions 192 .

[0028] The threaded barrel is a barrel with both ends transparent. It consists of four parts, namely: an integrally made driving end plate 2, a positive thread barrel 3, a reverse thread barrel 4 and a smooth thread barrel 5. The positive thread barrel 3 and the external thread barrel have external threads, and their external threads are in opposite directions. The smooth thread barrel 5 has a smooth surface on the outside. The driving end plate 2 is convex, and its thin section can just be inserted into the bearing 20 and matched with the bearing 20. The outer diameters of the thick section, thin section, positive thread barrel 3, reverse thread barrel 4 to the smooth thread barrel 5 of the driving end plate 2 decrease in sequence. A connecting part 1 is integrally connected to the outer side of the thick section of the driving end plate 2 to fix the driving device installed outside the driving end plate 2. According to different positions of different vehicles, the cross-section of the connecting part 1 can be of different shapes, such as triangle, square, etc. There is also a bearing between the middle shaft 11 and the connecting part 1.

[0029] There are two clutch plates, namely a forward rotation clutch plate 8 and a reverse rotation clutch plate 9. The forward rotation clutch plate 8 is threadedly connected to the forward rotation wire drum 3, and the reverse rotation clutch plate 9 is threadedly connected to the reverse rotation wire drum 4. Then, a rubber ring 7 is respectively put on the side of the forward rotation clutch plate 8 and the reverse rotation clutch plate 9 facing the driving end plate 2. There are two symmetrically distributed through holes 6 on the forward rotation clutch plate 8 and the reverse rotation clutch plate 9.

[0030] A smooth rotary disc 10 is mounted on the smooth rotary cylinder 5. The smooth rotary disc 10 is convex in shape, with its thin section facing the driving end plate 2 and extending two restraining forks 12. The two restraining forks 12 are respectively inserted forward through the holes 6 to play a guiding role, so that the forward rotation clutch gear plate 8 and the reverse rotation clutch gear plate 9 can only move linearly relative to each other and cannot rotate relative to each other; six radially distributed magnets 16 (other numbers, such as 4, 8, 10, etc., but must be an even number) are fixed to the outside of the thick section of the smooth rotary disc 10. These six magnets 16 have three N poles facing outwards and three S poles facing outwards, and are arranged at intervals.

[0031] After the smooth rotating disc 10 is sleeved on the smooth rotating cylinder 5 , a washer 22 is sleeved on the outer side of the smooth rotating disc 10 .

[0032] Then the inner cylinder 13 is sleeved on the threaded cylinder. The inner cylinder 13 is composed of two equal half inner cylinders, which are combined together. There is no need to fix the two half inner cylinders. There is a circle of positive rotation clutch ring 14 and a circle of reverse rotation clutch ring 15 in the inner cylinder 13. The positive rotation clutch ring 14 is located at the end of the end closer to the driving end plate 2, and the reverse rotation clutch ring 15 is located a little closer to the inside. The positive rotation clutch gear plate 8 is located between the positive rotation clutch ring 14 and the reverse rotation clutch ring 15, and the reverse rotation clutch gear plate 9 is located between the smooth rotating disk 10 and the reverse rotation clutch ring 15. At the other end opposite to the positive rotation clutch ring 14, the inner cylinder extends a flange 21 outward.

[0033] The outer hub 19 is located at the outermost layer, and the thin section of the driving end plate 2 is matched with the bearing 20 at one end, that is, the bearing 20 at this end is sleeved on the thin section of the driving end plate 2, and the inner cylinder 13 is located in the outer hub 19 as a whole, and the flange 22 is placed on the end face of one end of the middle part 191, and then the other end of the outer hub 19 is inserted into the bearing 20, and the bearing is close to the flange 22, and then the fixed anti-rotation plate 17 is inserted outside the bearing 20. The fixed anti-rotation plate 17 is also convex, and its thin section is matched with the bearing 20, and on the inner surface of the thin section, there are six radially distributed magnets 16 like the smooth rotating plate 10, and the magnets 16 on the two surfaces are separated by washers 22. The outer surface of the thick section of the fixed anti-rotation plate 17 has a fixed bayonet 18 for connecting with external equipment.

[0034] The two ends of the central axis 11 are fixed with nuts.

[0035] The above is just a description of the structure. When assembling, first install a rubber ring and the forward clutch disc into the inner cylinder, align the two half inner cylinders together, and then insert the outer hub from one end of the outer hub, and then insert the threaded cylinder into the inner cylinder from the other end of the outer hub, that is, insert the smooth rotating cylinder end of the threaded cylinder inward, and use a stick or a screwdriver to insert it from the flange end into the through hole of the forward clutch disc, and completely tighten the forward clutch disc onto the forward thread cylinder. Similarly, after putting a rubber ring on the reverse thread cylinder, completely tighten the reverse clutch disc onto the reverse thread cylinder, and then appropriately back-rotate the reverse clutch disc about one circle. The purpose of this step is to leave a proper gap between the forward and reverse clutch plates and the forward and reverse clutch rings, that is, one of the clutch plates can easily stick to the corresponding clutch ring, and the other clutch plate can easily leave the corresponding other clutch ring, so that the two clutch plates can run in a relative straight line and drive the overall rotation of the wheel axle. Then align the through holes on the forward and reverse clutch plates, and then install the smooth rotating disk. The restraining fork passes through the through holes on the reverse and forward clutch plates, and then install the gaskets and fix the anti-rotation disk in turn.

[0036] The role of neutral slip on the three-speed axle is extremely important, because the general dead flywheel drive axle does not have the ability to slip in neutral, and the general ratchet axle does not have the ability to actively reverse. Therefore, after the three-speed axle structure has these two advantages, it must have the ability to slip in neutral. The key advantage of neutral slip is that during passive slip due to inertia, because it is in a neutral state with the drive end stationary, it will not cause the forward and reverse clutch plates and the drive end combination and the middle shaft to rotate together. That is, this advantage is to ensure that in any passive slip state, it will not passively rotate or affect the stationary drive end. That is, whether the drive end is stationary or rotating, it will not be disturbed by any external force due to passive slip. For example, when the three-speed axle is installed on a three-wheeled bicycle, the passive slip will not be connected to the drive end and the crank, but the three-wheeled bicycle still has the ability to move forward or backward.

[0037] Except for the technical features described in the specification, the other technical features are known technologies to those skilled in the art.

Claims

1. A combined wheel-axle structure capable of freely shifting transmission, characterized in that: The cam is an axially parallel rotating shaft, and the cam is a plurality of parallel rotating shafts, each of which has a plurality of inner diameters larger than the inner diameter of the middle section, and the plurality of parallel rotating shafts are connected to each other with a plurality of outer diameters. Hole, a gasket is put on the outside of the smooth rotating disk; then the inner cylinder is put on the outer surface of the threaded cylinder, and a positive rotation clutch retaining ring and a reverse rotation clutch retaining ring are fixedly arranged in the inner cylinder near one end of the driving end plate, the positive rotation clutch gear plate is located between the positive rotation clutch retaining ring and the reverse rotation clutch retaining ring, and the reverse rotation clutch gear plate is located between the smooth rotating disk and the reverse rotation clutch retaining ring, and a flange is extended outward from one end of the inner cylinder away from the driving end plate; the outer hub is put on the outside of the inner cylinder, and the driving end The plate is located at one end of the outer hub, and the thin part of the driving end plate is matched with the bearing at this end; a fixed anti-rotation disk with a hole and a convex shape is inserted into the other end of the outer hub, and the aperture of the fixed anti-rotation disk is the same as the aperture of the threaded tube, and the bearing at this end is matched with the thin section of the fixed anti-rotation disk; a circle of radially distributed magnets is respectively provided on the inner surface of the thin section of the fixed anti-rotation disk and the outer side of the thick section of the smooth rotating disk, and the number of magnets in each circle is an even number, and the N poles and S poles are arranged at intervals.

2. The combined wheel-axle structure with freely shiftable transmission according to claim 1 is characterized in that: A rubber ring is provided on one side of the forward rotation clutch gear disc and the reverse rotation clutch gear disc facing the driving end plate.

3. The combined wheel-axle structure with freely shiftable transmission according to claim 1 is characterized in that: The outer surface of the fixed anti-rotation disk is provided with a fixing pin for fixed connection with external equipment.

4. The combined wheel-axle structure with freely shiftable transmission according to claim 1 is characterized in that: The inner cylinder is composed of two semi-cylinders combined together.

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