Bearing type synchronous wheel flange structure

Abstract

The utility model relates to a bearing type synchronizing wheel flange structure. The bearing type synchronizing wheel flange structure comprises a dustproof sealing ring, a synchronizing wheel inner shell, three driving ratchet claws, a fixing spring, a sealing O-shaped ring, a synchronizing wheel outer shell riveting flange, a ratchet tooth type synchronizing wheel outer shell, a deep groove ball bearing, a check ring and a locking fixing ring. The outer wall of the tooth type synchronizing wheel shell with the ratchet wheel is connected with the riveting flange of the synchronizing wheel shell; the left side of the inner wall of the tooth-shaped synchronizing wheel shell with the ratchet wheel is rotationally connected with the deep groove ball bearing, and the check ring is clamped to the position, on the left side of the deep groove ball bearing, of the inner wall of the tooth-shaped synchronizing wheel shell with the ratchet wheel; the bearing type synchronizing wheel flange structure aims to overcome the existing defects, machining and assembling are easy, various complicated machining procedures are effectively reduced, production efficiency is effectively improved, production cost is reduced, and the production period is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bearing type synchronous wheel baffle structure. BACKGROUND

[0002] The synchronous wheel assembly mainly contains front synchronous wheel, rear synchronous wheel and synchronous belt. It is known that the belt transmission system is in the process of transmitting force and rotating, and the front and rear synchronous wheels are respectively in specific area positions, at least around different two center shafts, a certain synchronous wheel is applied with a circular rotation driving force, and the driving force is transmitted to another synchronous wheel through the synchronous belt, so that the closed loop driving around at least two center shafts is repeated. This means that the belt will certainly drive around the outer circle of the wheel disc during the whole driving force transmission. The structure is affected by whether the two center shafts are parallel, the size of the center distance position, the angle error of the center line of the front and rear synchronous wheels, the tension of the synchronous belt, the size of the driving force and the like in the process of transmission work, and the synchronous belt will slightly move left and right on the tooth type of the two synchronous wheels.

[0003] If the difficulty is allowed in the product structure design space, the width of the front and rear synchronous wheel tooth type can be appropriately increased to meet the left and right offset amount generated by the synchronous belt when transmitting the driving force. However, in this way, the cost will also increase accordingly, and it will also be limited by space. In order to meet the more extensive demand, the front and rear synchronous wheels are usually staggered with cross baffle, or one synchronous wheel is increased with baffle on both sides to solve this problem. The traditional synchronous wheel baffle generally locks the baffle on the synchronous wheel by screws, which requires that the internal and external space of the product used must not be interfered, and the space requirement is still certain. Moreover, the processing and assembly process is complicated. Especially in the field of bicycle belt transmission system at present, including the field of electric power-assisted belt transmission system, it is usually necessary to complete the transmission work in a limited space.

[0004] Therefore, a bearing type synchronous wheel baffle structure is proposed for the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art and provides a bearing type synchronous wheel baffle structure, which is simple to process and assemble, effectively reduces various complicated processing procedures, effectively improves production efficiency, reduces production cost, and shortens production cycle.

[0006] The technical scheme for realizing the above-mentioned purpose is as follows: a bearing type synchronous wheel baffle structure, comprising a dustproof sealing ring, a synchronous wheel inner shell, three driving ratchet claws, a fixed spring, a sealing O-shaped ring, a synchronous wheel outer shell riveted baffle, a synchronous wheel outer shell with ratchet teeth, a deep groove ball bearing, a baffle ring and a locking fixing ring.

[0007] The outer wall of the self-ratchet-tooth type synchronous wheel shell is connected with the synchronous wheel shell riveting stop; the left side of the inner wall of the self-ratchet-tooth type synchronous wheel shell is rotationally connected with the deep groove ball bearing, and the left side of the deep groove ball bearing of the inner wall of the self-ratchet-tooth type synchronous wheel shell is clamped with the retainer ring;

[0008] The outer wall of the synchronous wheel inner shell is connected with three driving ratchet claws, and is limited by the fixed spring;

[0009] The synchronous wheel inner shell penetrates the self-ratchet-tooth type synchronous wheel shell, and the other end is connected with the locking fixing ring; a sealing O-ring is arranged between the synchronous wheel inner shell and the locking fixing ring; and a dustproof sealing ring is arranged between the synchronous wheel inner shell and the right side wall of the self-ratchet-tooth type synchronous wheel shell.

[0010] Preferably, the left side of the inner wall of the self-ratchet-tooth type synchronous wheel shell is a bearing placing groove, and the deep groove ball bearing is located in the bearing placing groove.

[0011] Preferably, the left side of the bearing placing groove of the inner wall of the self-ratchet-tooth type synchronous wheel shell is a retainer ring groove, and the retainer ring is located in the retainer ring groove.

[0012] Preferably, the outer wall of the synchronous wheel inner shell is provided with a ratchet tooth groove, and the three driving ratchet claws are limited in the ratchet tooth groove by the fixed spring.

[0013] Preferably, the right end of the synchronous wheel inner shell is provided with a dustproof groove, and the dustproof sealing ring is located in the dustproof groove.

[0014] Preferably, the left end of the synchronous wheel inner shell is provided with a sealing ring groove, and the sealing O-ring is located in the sealing ring groove.

[0015] Preferably, the left end of the synchronous wheel inner shell is a threaded section, and is threadedly connected with the locking fixing ring.

[0016] Preferably, the outer wall of the self-ratchet-tooth type synchronous wheel shell has a plurality of riveting columns, a plurality of riveting holes are formed in the synchronous wheel shell riveting stop, and the self-ratchet-tooth type synchronous wheel shell and the synchronous wheel shell riveting stop are connected by the riveting holes and the riveting columns.

[0017] The utility model discloses a beneficial effect is: this bearing type synchronous wheel fender structure, internal structure design has adopted bearing type transmission, this design effectively reduces the noise when transmission, also has increased the fluency of transmission, effectively promotes user riding experience. The bearing type structure both sides are added dustproof sealing washer respectively, make inside transmission component environment more clean and no dust interference, can effectively play the effect of dustproof and rust prevention. The fender riveting technology can be applicable to all synchronous wheels that need to increase fender technology, and the riveting column and riveting hole can be increased and reduced properly according to the different tooth number of product, different size;Processing and assembling are simple, effectively reduce each complicated processing procedure, effectively improve production efficiency, reduce production cost, shorten production cycle. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the axonometric drawing of the bearing type synchronous wheel fender structure of the utility model;

[0019] Figure 2 It is another perspective axonometric drawing of the bearing type synchronous wheel fender structure of the utility model;

[0020] Figure 3 It is the front view of the bearing type synchronous wheel fender structure of the utility model;

[0021] Figure 4 It is the side view of the bearing type synchronous wheel fender structure of the utility model;

[0022] Figure 5 It is the back view of the bearing type synchronous wheel fender structure of the utility model;

[0023] Figure 6 It is the split schematic view of the bearing type synchronous wheel fender structure of the utility model;

[0024] Figure 7 It is the detail view of synchronous wheel shell riveting fender of the utility model;

[0025] Figure 8 It is the detail view of synchronous wheel shell of the utility model with ratchet tooth type;

[0026] Figure 9 It is the detail view of synchronous wheel inner shell of the utility model.

[0027] In the drawing: 1, dustproof sealing washer;2, synchronous wheel inner shell;3, drive ratchet claw;4, fixed spring;5, sealing O type ring;6, synchronous wheel shell riveting fender;7, synchronous wheel shell with ratchet tooth type;8, deep groove ball bearing;9, baffle ring;10, lock fixing ring;11, riveting hole;21, riveting column;35, baffle ring groove;36, bearing placement groove;38, ratchet tooth slot position;41, sealing ring groove;42, dustproof groove. DETAILED DESCRIPTION

[0028] The technical solutions of the utility model will be described clearly and completely in connection with the drawings. In the description of the utility model, it should be explained that the directions or position relations of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0029] The utility model will be further described in connection with the drawings.

[0030] As Figures 1-9 shown, a bearing type synchronous wheel flange structure, including dustproof sealing ring 1, synchronous wheel inner shell 2, three drive ratchet pawl 3, fixed spring 4, sealing O type ring 5, synchronous wheel outer shell riveting flange 6, synchronous wheel outer shell with ratchet tooth 7, deep groove ball bearing 8, baffle 9 and locking fixing ring 10, synchronous wheel outer shell riveting flange 6 is connected to the outer wall of synchronous wheel outer shell with ratchet tooth 7, deep groove ball bearing 8 is rotatably connected to the left inner wall of synchronous wheel outer shell with ratchet tooth 7, and the left side of deep groove ball bearing 8 in the inner wall of synchronous wheel outer shell with ratchet tooth 7 is clamped with baffle 9, the left side of bearing placement groove 36 in the inner wall of synchronous wheel outer shell with ratchet tooth 7 is baffle groove 35, and deep groove ball bearing 8 is located in bearing placement groove 36.

[0031] Specifically, the outer wall of synchronous wheel inner shell 2 is connected with three drive ratchet pawls 3, and is limited by fixed spring 4, and the outer wall of synchronous wheel inner shell 2 is provided with ratchet tooth groove 38, and three drive ratchet pawls 3 are limited in ratchet tooth groove 38 by fixed spring 4.

[0032] Specifically, the synchronous wheel inner shell 2 penetrates the synchronous wheel outer shell 7 with self-ratchet teeth, and the other end is connected with the locking fixing ring 10; the synchronous wheel inner shell 2 and the locking fixing ring 10 are provided with the sealing O-shaped ring 5; the synchronous wheel inner shell 2 and the right side wall of the synchronous wheel outer shell 7 with self-ratchet teeth are provided with the dustproof sealing ring 1. The right end of the synchronous wheel inner shell 2 is provided with a dustproof groove 42, and the dustproof sealing ring 1 is located in the dustproof groove 42. The left end of the synchronous wheel inner shell 2 is provided with a sealing ring groove 41, and the sealing O-shaped ring 5 is located in the sealing ring groove 41. The left end of the synchronous wheel inner shell 2 is a threaded section and is threadedly connected with the locking fixing ring 10. The outer wall of the synchronous wheel outer shell 7 with self-ratchet teeth is provided with a plurality of riveting columns 21, a plurality of riveting holes 11 are formed in the synchronous wheel outer shell riveting stop 6, and the synchronous wheel outer shell 7 with self-ratchet teeth and the synchronous wheel outer shell riveting stop 6 are connected through the riveting holes 11 and the riveting columns 21.

[0033] Specifically, the synchronous wheel outer shell 7 with self-ratchet teeth is first fixed on the special riveting bottom die, then the riveting holes 11 on the synchronous wheel outer shell riveting stop 6 are correspondingly sleeved on the riveting columns 21 of the synchronous wheel outer shell 7 with self-ratchet teeth, and then the special riveting upper die is placed on the synchronous wheel riveting stop, and the riveting machine is started by pressing the start key.

[0034] Specifically, the deep groove ball bearing 8 is placed in the corresponding bearing placing groove 36 of the synchronous wheel outer shell 7 with self-ratchet teeth, and then the upper and lower dies for pressing the deep groove ball bearing are placed on the assembly, and finally the assembly is pressed together.

[0035] Specifically, the lubricating grease is evenly applied to the inner tooth type position of the synchronous wheel outer shell bearing assembly with self-ratchet teeth, and then the retaining ring 9 is installed at the outer end groove position of the deep groove ball bearing 8, which can limit the position and prevent the deep groove ball bearing 8 from moving.

[0036] Specifically, the outer threaded end of the synchronous wheel inner shell 2 is placed upward on the hand, then the three driving ratchet claws 3 are sequentially placed in the corresponding ratchet tooth groove positions 38 of the synchronous wheel inner shell 2, then the end of the fixed spring 4 with the fixed ear is placed downward in the corresponding acupoint, then the fixed spring is gently pulled apart, and then the fixed spring is installed in the corresponding grooves of the synchronous wheel inner shell 2 and the three driving ratchet teeth, and then the sealing O-shaped ring 5 is sleeved in the corresponding sealing ring groove 41 of the synchronous wheel inner shell 2.

[0037] Specifically, the assembled synchronous wheel inner shell 2 assembly is assembled into the synchronous wheel outer shell pre-assembly with ratchet teeth, and during assembly, the inner shell can be appropriately rotated, and the return key is pressed lightly, so that the three driving ratchet teeth can be smoothly fitted into the tooth type 7 of the synchronous wheel outer shell with ratchet teeth. When the driving ratchet pawl is half inserted, the dustproof sealing ring 1 is assembled into the corresponding dustproof groove 42 groove position of the synchronous wheel inner shell. Then press the inner shell evenly, assemble the synchronous wheel inner shell assembly and the synchronous wheel outer shell assembly with ratchet teeth to the position, make the bearing position of the synchronous wheel inner shell pass through the inner diameter position of the deep groove ball bearing in the synchronous wheel outer shell assembly with ratchet teeth, and then assemble the dustproof sealing ring 1 flatly into the corresponding dustproof groove 42 groove position of the synchronous wheel outer shell with ratchet teeth. Finally, the special locking torque wrench is used to lock the locking fixing ring 10 to the corresponding outer thread of the synchronous wheel inner shell 2.

[0038] The present utility model adopts the rim directly riveted on the top of the synchronous gear, which maximizes the use of the internal space of the synchronous gear. The riveting column is directly riveted along the top diameter of the gear type, and the rim has higher adhesion with the gear type, and can bear greater anti-synchronous belt pull-off force.

[0039] The rim riveting hole 11 has an inclined angle at the hole position. When the rim is riveted with the riveting column of the synchronous gear, the head of the riveting column can be conically extruded into the inclined angle position, like a nail cap, which can effectively increase the firmness of riveting and effectively solve the anti-pull-off force after the rim is riveted.

[0040] The bearing type synchronous gear rim structure adopts a bearing type transmission in the internal structure design, which effectively reduces the noise generated during transmission and increases the smoothness of transmission, effectively improving the user's riding experience. The bearing type structure is provided with a dustproof sealing ring on both sides, so that the internal transmission components are cleaner and free from dust interference, which can effectively prevent dust and rust. The rim riveting process can be applied to all synchronous gears that need to increase the rim process, and the riveting column and riveting hole can be appropriately increased or reduced according to the different tooth numbers and sizes of the products. The processing and assembly are simple, which effectively reduces the complicated processing procedures, improves the production efficiency, reduces the production cost, and shortens the production cycle.

[0041] The above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. These modifications or replacements do not change the essence of the corresponding technical solutions out of the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A bearing-type synchronous wheel bead structure, characterized by, It include dustproof sealing ring (1), synchronous wheel inner shell (2), three drive ratchet pawl (3), fixed spring (4), sealing O type ring (5), synchronous wheel shell riveting baffle (6), synchronous wheel shell with ratchet tooth (7), deep groove ball bearing (8), baffle (9) and locking ring (10); The outer wall of the synchronous wheel shell with ratchet tooth (7) is connected with the synchronous wheel shell riveting baffle (6); the left side of the inner wall of the synchronous wheel shell with ratchet tooth (7) is rotatably connected with the deep groove ball bearing (8), and the left side of the deep groove ball bearing (8) is clamped with the baffle (9); The outer wall of the synchronous wheel inner shell (2) is connected with three drive ratchet pawls (3), and is limited by the fixed spring (4); The synchronous wheel inner shell (2) penetrates the synchronous wheel shell with ratchet tooth (7), and the other end is connected with the locking ring (10); the sealing O type ring (5) is arranged between the synchronous wheel inner shell (2) and the locking ring (10); and the dustproof sealing ring (1) is arranged between the right side wall of the synchronous wheel inner shell (2) and the synchronous wheel shell with ratchet tooth (7).

2. The bearing-type synchronous wheel rim structure according to claim 1, characterized in that, The left side of the inner wall of the synchronous wheel shell with ratchet tooth (7) is a bearing placing groove (36), and the deep groove ball bearing (8) is located in the bearing placing groove (36).

3. The bearing-type synchronous wheel rim structure according to claim 2, characterized in that, The left side of the bearing placing groove (36) of the inner wall of the synchronous wheel shell with ratchet tooth (7) is a baffle groove (35), and the baffle (9) is located in the baffle groove (35).

4. The bearing-type synchronous wheel rim structure according to claim 1, characterized by The outer wall of the synchronous wheel inner shell (2) is provided with a ratchet tooth groove (38), and three drive ratchet pawls (3) are limited in the ratchet tooth groove (38) by the fixed spring (4).

5. The bearing-type synchronous wheel rim structure according to claim 1, wherein The right end of the synchronous wheel inner shell (2) is provided with a dustproof groove (42), and the dustproof sealing ring (1) is located in the dustproof groove (42).

6. The bearing-type synchronous wheel rim structure according to claim 1, wherein The left end of the synchronous wheel inner shell (2) is provided with a sealing ring groove (41), and the sealing O type ring (5) is located in the sealing ring groove (41).

7. The bearing-type synchronous wheel rim structure according to claim 1, wherein The left end of the synchronous wheel inner shell (2) is a threaded section and is threadedly connected with the locking ring (10).

8. The bearing-type synchronous wheel rim structure according to claim 1, wherein The outer wall of the synchronous wheel shell with ratchet tooth (7) is provided with a plurality of riveting columns (21), a plurality of riveting holes (11) are formed in the synchronous wheel shell riveting baffle (6), and the synchronous wheel shell with ratchet tooth (7) and the synchronous wheel shell riveting baffle (6) are connected by riveting the riveting columns (21) through the riveting holes (11).

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