Fluted disc transmission mechanism with built-in motor

Abstract

The fluted disc transmission mechanism comprises a middle shaft arranged in a five-way pipe, a twisting sleeve is arranged on the middle shaft, a one-way bearing is arranged between the twisting sleeve and the five-way pipe, a large gear is arranged on the twisting sleeve exposed out of the five-way pipe, the large gear is arranged on a movable seat assembly, and the movable seat assembly is arranged on the middle shaft. A support is arranged on the large gear, and a fluted disc is arranged on the support. A cavity is formed between the support and the middle shaft, the twisting sleeve is provided with a boss exposed in the cavity, and a bearing is arranged between the boss and the support. Through the application of the bearing between the boss and the support, the rotating stress of the fluted disc acts on the bearing and the large gear at the same time, the running stability of the fluted disc is improved, and the problem that an existing fluted disc shakes in the using process is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of middle -position motor, and relates to a gear disc transmission mechanism of middle -position motor. BACKGROUND

[0002] At present, the gear disc transmission mechanism on the middle -position motor is the core part of the bicycle driving system. Figure 1 As shown in the figure, the middle shaft 2' is arranged in the five-way pipe 1', the torsion sleeve 3' is arranged on the middle shaft 2', the one-way bearing is arranged between the torsion sleeve 3' and the five-way pipe 1', and the stable transmission of power is realized through the torsion sleeve 3', the one-way bearing and other components. The large gear 4' is arranged on the torsion sleeve exposed outside the five-way pipe 1', and the large gear 4' is arranged on the movable seat assembly 8'; the bracket 5' is arranged on the large gear 4', the gear disc 6' is arranged on the bracket 5', and the oil seal 7' is arranged between the bracket 5' and the middle shaft 2'. The stability of the above-mentioned gear disc 6' in the use process completely depends on the large gear structure, which may cause the gear disc to shake in actual use, and then affect the stability and safety of riding. Although the oil seal can provide protection to a certain extent, reduce the invasion of dust and moisture, but the effect of improving the stability of the gear disc is limited.

[0003] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a gear disc transmission mechanism of middle -position motor, which improves the problem of shaking of the gear disc in the use process through the improvement of structure.

[0005] The utility model aims at realizing the following technical scheme:

[0006] A gear disc transmission mechanism of middle -position motor, including the middle shaft that sets up in five -way pipe, the torsion sleeve is arranged on the middle shaft, the one-way bearing is arranged between the torsion sleeve and five -way pipe, the large gear is arranged on the torsion sleeve exposed outside five -way pipe, the large gear is arranged on movable seat assembly, the bracket is arranged on the large gear, and the gear disc is arranged on the bracket;The cavity is formed between the bracket and the middle shaft, the boss exposed in the cavity is formed on the torsion sleeve, and the bearing is arranged between the boss and the bracket.

[0007] As a further improvement of the utility model one embodiment, wherein the dustproof sealing ring is arranged between the boss and the middle shaft.

[0008] As a further improvement of the utility model one embodiment, wherein the large gear is a double clutch gear.

[0009] As further improvement of the embodiment of the utility model, wherein, the gear wheel includes gear, first one-way clutch, second one-way clutch and support, first one-way clutch, second one-way clutch are arranged at the inside and outside of support respectively, gear is arranged on second one-way clutch;The support is fixed on the support by screw.

[0010] As further improvement of the embodiment of the utility model, wherein, the second one-way clutch is provided with the protective cover covering gear periphery, the protective cover is fixed on the shell of middle motor.

[0011] As further improvement of the embodiment of the utility model, wherein, the gear and second one-way clutch form stepped structure, the gear is lower than the height of second one-way clutch.

[0012] As further improvement of the embodiment of the utility model, wherein, the protective cover is provided with notch near second one-way clutch side, the seal ring is arranged in the notch, the bracket has the protruding portion extending into the notch, the seal ring is abutted to the protruding portion.

[0013] The above technical scheme has the following beneficial effects: through the application of the bearing between the boss and the bracket, the rotating stress of the gear disc acts on the bearing and the gear wheel at the same time, the stability of the gear disc operation is improved, and the problem of shaking of the existing gear disc in use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other embodiments can be derived from the provided drawings without creative labor.

[0015] The structure, proportion, size, etc. shown in the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions that can be implemented by the utility model, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be produced by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0016] Figure 1 The structural schematic diagram provided for the background art.

[0017] Figure 2 The structural schematic diagram provided for the utility model.

[0018] Fig.:

[0019] 1', 1, five-way pipe;

[0020] 2', 2, center shaft;

[0021] 3', 3, torsion sleeve; 31, boss;

[0022] 4', 4, bull gear; 41, second one-way clutch; 42, first one-way clutch; 43, gear; 44, support;

[0023] 5', 5, bracket;

[0024] 6', 6, toothed disc;

[0025] 7', oil seal; 7, dust seal;

[0026] 8', 8, moving base assembly;

[0027] 9, bearing;

[0028] 10, protective cover;

[0029] 11, sealing ring. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0032] In the present application, unless otherwise specified, the orientation words such as "upper, lower, top, bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves. Similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application. EMBODIMENT

[0033] Referring to Figure 2 the figure, a toothed disc transmission mechanism of an in-line motor includes key components such as a five-way pipe 1, a center shaft 2, a torsion sleeve 3, a bull gear 4, a bracket 5, and a toothed disc 6. The five-way pipe 1 serves as the support foundation of the entire mechanism, and the center shaft 2 is stably arranged inside. The center shaft 2 is tightly fitted with the torsion sleeve 3. To ensure smooth rotation of the torsion sleeve 3 in a specific direction, a one-way bearing is carefully arranged between the torsion sleeve 3 and the five-way pipe 1.

[0034] The twist sleeve 3 is partially exposed outside the five-way pipe 1, and a large gear 4 is installed on this part. The large gear 4 is arranged on the moving seat assembly 8, which not only ensures the stability of transmission, but also increases the flexibility of the mechanism. The large gear 4 is provided with a support 5, which serves as a bearing structure, and a toothed disc 6 is installed on the support 5 for power transmission.

[0035] The support 5 and the central shaft 1 form a cavity, and the twist sleeve 3 has a boss 31 exposed in the cavity, and a bearing 9 is arranged between the boss 31 and the support 5. By introducing the bearing 9 between the boss 31 and the support 5, the toothed disc transmission mechanism of the present application realizes the optimal distribution of the rotating force of the toothed disc 6. Specifically, when the toothed disc 6 rotates, the force is not only applied to the large gear 4, but also transmitted to the bearing 9, which significantly improves the running stability of the toothed disc 6. Therefore, compared with the traditional design, the present application effectively improves the shaking problem of the toothed disc in use, and provides the rider with a more stable and safe power output experience.

[0036] The large gear 4 in this embodiment is a double clutch gear, which gives the toothed disc transmission mechanism more flexible power transmission capability. Specifically, the large gear 4 is a double clutch gear. Specifically, the large gear 4 includes a gear 43, a first one-way clutch 42, a second one-way clutch 41 and a support 44, the first one-way clutch 42 and the second one-way clutch 41 are arranged on the inner and outer sides of the support 44 respectively, the gear 43 is arranged on the second one-way clutch 41, and the support 5 is fixed on the support 44 by screws. Through the above structure design, the power transmission is more stable and reliable.

[0037] The second one-way clutch 41 is additionally provided with a protective cover 10, which is designed to fully cover and protect the gear 43 to prevent it from being eroded and damaged by the external environment. The protective cover 10 is firmly fixed on the shell of the middle motor, thereby ensuring the safe operation and long-term stability of the entire transmission system.

[0038] Further, the cooperation relationship between the gear 43 and the second one-way clutch 41 presents a stepped structure. Specifically, the height of the gear 43 is set to be lower than the second one-way clutch 41, which cleverly forms a step between the two. And the protective cover 10 is stably placed on this step, thereby realizing effective coverage and protection of the gear 43.

[0039] Preferably, the protective cover 10 is specially designed with a notch near the second one-way clutch 41, and a sealing ring 11 is carefully arranged in the notch. At the same time, the support 5 has a protruding part extending into the notch, which tightly abuts the sealing ring 11, thereby ensuring the sealing and dustproof effect of the entire transmission system, effectively improving the service life and reliability of the mechanism.

[0040] In this embodiment, a dustproof sealing ring 7 is arranged between the boss 31 and the shaft 2. This design aims to effectively block the invasion of external dust and impurities into the mechanism, ensuring that the bearing 9 and other key components operate stably in a clean environment, thereby prolonging the service life of the entire gear disc transmission mechanism and improving its working reliability.

[0041] The present application realizes the balanced distribution of the rotating force of the gear disc through the ingenious application of the bearing between the boss and the bracket. This design makes the rotating force of the gear disc act on the bearing and the gear wheel at the same time, thereby significantly improving the stability of the gear disc operation. Compared with the traditional design, the application effectively solves the problem of shaking of the gear disc during use, providing users with a more stable and reliable use experience.

[0042] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0043] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0044] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0045] The above is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pinion gear transmission mechanism of an intermediate motor, comprising a middle shaft arranged in a five-way pipe, a torsion sleeve being arranged on the middle shaft, a one-way bearing being arranged between the torsion sleeve and the five-way pipe, a large gear being arranged on the torsion sleeve exposed outside the five-way pipe, the large gear being arranged on a moving seat assembly, a support being arranged on the large gear, and a pinion gear being arranged on the support; characterized in that: The bracket and the central shaft form a cavity, the boss on the torsion sleeve is exposed in the cavity, and a bearing is arranged between the boss and the bracket.

2. A toothed disc transmission mechanism according to claim 1, characterised in that: A dustproof sealing ring is arranged between the boss and the central shaft.

3. A toothed disc transmission mechanism according to claim 1 or 2, characterised in that: The large gear is a double-clutch gear.

4. A toothed disc transmission mechanism according to claim 3, characterised in that: The large gear comprises a gear, a first one-way clutch, a second one-way clutch and a support, the first one-way clutch and the second one-way clutch are arranged on the inner and outer sides of the support respectively, and the gear is arranged on the second one-way clutch; the bracket is fixed on the support by screws.

5. A toothed disc transmission mechanism according to claim 4, characterised in that: A protective cover covering the gear is arranged on the periphery of the second one-way clutch, and the protective cover is fixed on the shell of the middle motor.

6. A toothed disc transmission mechanism according to claim 5, wherein: A stepped structure is formed between the gear and the second one-way clutch, and the gear is lower than the height of the second one-way clutch.

7. The toothed disc transmission mechanism of claim 5, wherein: A notch is arranged on the side of the protective cover close to the second one-way clutch, a sealing ring is arranged in the notch, the bracket has a protruding part extending into the notch, and the sealing ring abuts against the protruding part.

Images