Fluted disc transmission mechanism for middle 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 large gear assembly is arranged on the twisting sleeve exposed out of the five-way pipe, the large gear assembly is arranged on a movable seat assembly, a support is arranged on the large gear assembly, and a fluted disc is arranged on the support. The large gear assembly comprises a gear, a one-way clutch, a ratchet wheel and a support, the ratchet wheel and the one-way clutch are arranged on the inner side and the outer side of the support respectively, and a ratchet wheel containing groove for containing the ratchet wheel is formed in the lower end of the support. The gear is arranged on the one-way clutch; the bracket is fixed on the support through a screw; the ratchet wheel is arranged on the twisting sleeve, and a first bearing is arranged between the support and the middle shaft. The ratchet wheel and the one-way clutch are matched to replace an original double-clutch structure, the overall mechanical strength is improved, stability is good, and cost is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of middle -position motor, and relates to a gear disc transmission mechanism based on the fusion of ratchet and one-way clutch. 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', and 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'.

[0003] In the design process of the existing gear disc transmission mechanism, in order to realize the independent driving function of the pedal and the motor, the large gear 4' is designed as a double clutch structure. The original intention of this design is to improve the flexibility and diversity of transmission and meet the switching requirements of different power sources. However, in the actual application process, the pedaling action will bring significant radial force to the clutch, which is easy to cause the damage of the clutch, increase the cost of maintenance and replacement of the clutch, and affect the overall economy and practicability.

[0004] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a gear disc transmission mechanism for middle -position motor, which solves at least one technical problem in the background art through structural improvement.

[0006] The utility model aims at providing a gear disc transmission mechanism for middle -position motor, which solves at least one technical problem in the background art through structural improvement.

[0007] A gear disc transmission mechanism for middle -position motor, comprising a middle shaft arranged in a five-way pipe, a torsion sleeve arranged on the middle shaft, a large gear assembly arranged on the torsion sleeve exposed outside the five-way pipe, the large gear assembly arranged on a movable seat assembly, a bracket arranged on the large gear assembly, and a gear disc arranged on the bracket; the large gear assembly comprises a gear, a one-way clutch, a ratchet and a support, the ratchet and the one-way clutch are arranged on the inner and outer sides of the support respectively, and the lower end of the support is provided with a ratchet placing groove for placing the ratchet; the gear is arranged on the one-way clutch, the bracket is fixed on the support through screws; the ratchet is arranged on the torsion sleeve, and a first bearing is arranged between the support and the middle shaft.

[0008] As a further improvement of the embodiment of the utility model, the support is provided with a positioning groove for placing the first bearing.

[0009] As a further improvement of the embodiment of the utility model, the positioning groove is provided with at least two first bearings placed side by side.

[0010] As a further improvement of the embodiment of the utility model, the support on the outer side of the first bearing is provided with an oil seal between the support and the central shaft.

[0011] As a further improvement of the embodiment of the utility model, the one-way clutch is provided with a protective cover covering the gear, and the protective cover is fixed on the shell of the middle motor.

[0012] As a further improvement of the embodiment of the utility model, the side of the torsion sleeve away from the gear assembly is provided with a second bearing, and the second bearing is arranged between the five-way pipe and the central shaft.

[0013] The above technical scheme has the following beneficial effects: the original double-clutch structure is replaced by the cooperation of the ratchet wheel and the one-way clutch, the mechanical strength of the whole is improved, the stability is good, and the cost is low. 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 drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating creative labor.

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

[0016] Figure 1 It is a schematic view of the tooth disc transmission mechanism structure in the background art.

[0017] Figure 2 It is a schematic view of the tooth disc transmission mechanism structure provided by the utility model.

[0018] Figure 3 It is a top view of the gear assembly provided by the utility model (without ratchet wheel).

[0019] Figure 4 For Figure 3 The sectional structure schematic view along the direction of A-A.

[0020] Figure 5 The partial three-dimensional schematic view provided by the utility model.

[0021] In the figure:

[0022] 1', 1, five-way pipe;

[0023] 2', 2, center shaft;

[0024] 3', 3, torsion sleeve;

[0025] 4', large gear; 4, large gear assembly;

[0026] 41, gear; 42, one-way clutch; 43, support; 44, ratchet; 45, ratchet placement slot;

[0027] 5', 5, support;

[0028] 6', 6, toothed disc;

[0029] 7', 7, oil seal;

[0030] 8', 8, moving seat assembly;

[0031] 9, second bearing;

[0032] 10, first bearing;

[0033] 11, protective cover. DETAILED DESCRIPTION

[0034] 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 utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] 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.

[0036] In the utility model, unless otherwise stated, the orientation words such as "up, down, top, bottom" are generally for the direction shown in the drawings, or for the vertical, perpendicular or gravity direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the utility model. EMBODIMENT

[0037] Reference Figures 2-5As shown, a gear disc transmission mechanism for a middle motor, the core structure includes five-way pipe 1, shaft 2, torsion sleeve 3, gear assembly 4, support 5, gear disc 6 and other key components. Among them, five-way pipe 1 as the support foundation of the whole mechanism, inside stably set shaft 2. Shaft 2 is closely fitted with torsion sleeve 3.

[0038] Torsion sleeve 3 is partially exposed outside five-way pipe 1, this part is provided with gear assembly 4. Gear assembly 4 is arranged on the moving seat assembly 8, such design not only ensures the stability of transmission, but also increases the flexibility of the mechanism. Gear assembly 4 is provided with support 5, which is used to transmit power.

[0039] The gear assembly 4 in the embodiment is a combination structure of ratchet and one-way clutch, specifically it includes gear 41, one-way clutch 42, ratchet 44 and support 43 and other key components. Ratchet 44 and one-way clutch 42 are respectively installed on the inner and outer sides of support 43, and the lower end of support 43 is specially provided with a ratchet placing groove 45 for stably placing ratchet 44. Gear 41 is arranged on one-way clutch 42, and support 5 is fixed on support 43 by screws, ensuring the stability of the overall structure. In addition, ratchet 44 is arranged on torsion sleeve 3, and first bearing 10 is arranged between support 43 and shaft 2 to realize smoother rotation.

[0040] In the utility model, we abandon the original double clutch structure, and instead adopt the ingenious cooperation of ratchet 44 and one-way clutch 42. This change not only significantly improves the mechanical strength of the overall structure, but also effectively reduces the manufacturing cost. It is particularly worth mentioning that the introduction of first bearing 10 enables the stress generated by the pedaling action to be directly and smoothly transmitted to first bearing 10 and ratchet 44 through shaft 2. Compared with the original design where the stress directly acts on the clutch, this improvement greatly enhances the stability of the transmission, reduces the risk of clutch damage caused by uneven stress, thereby prolonging the service life of the equipment and improving the user experience.

[0041] Obviously, the introduction of first bearing 10 is crucial to the stability of the gear disc transmission mechanism, which can effectively offset the radial stress and ensure the stability and accuracy of the transmission. In order to realize the stable installation of first bearing 10, we specially design a positioning groove matched with it on support 43. This design ensures the stability of first bearing 10 during installation and avoids transmission errors caused by position deviation. In addition, in order to improve the stress dispersion effect, we place two first bearings 10 side by side in the positioning groove. In this way, the two bearings can jointly bear the radial stress from shaft 2, further improving the stability and durability of the gear disc transmission mechanism.

[0042] In the embodiment, in order to ensure good lubrication of the first bearing 10 and the mechanical components around the first bearing 10 and prevent external impurities from entering, an oil seal 7 is additionally arranged between the support 43 where the first bearing 10 is located and the middle shaft 2. The oil seal 7 can effectively prevent lubricants such as grease or lubricating oil from leaking from the bearing part and prevent external pollutants such as dust and moisture from entering the bearing, thereby ensuring long-term stable operation of the first bearing 10 and even the entire gear disc transmission mechanism.

[0043] In the embodiment, the one-way clutch 42 is provided with a protective cover 11 which completely covers the gear 41 and effectively protects the gear 41 from external damage. The protective cover 11 is stably connected to the housing of the middle motor by fasteners, ensuring stability and safety under various working conditions.

[0044] In the embodiment, the second bearing 9 is additionally arranged at one end of the torsion sleeve 3 away from the large gear assembly 4, and is arranged between the five-way pipe 1 and the middle shaft 2 and cooperates with the first bearing 10 to significantly enhance the rotational stability of the middle shaft 2 and ensure smooth and unobstructed transmission.

[0045] The utility model discloses abandon traditional double clutch structure, innovatively adopt the ingenious cooperation of ratchet 44 and one-way clutch 42, and a brand-new gear disc transmission mechanism is constructed on the basis, and this design not only significantly improves the mechanical strength, guarantees the high stability in the transmission process, still effectively reduces the manufacturing cost through simplifying the structure. Compared with the traditional scheme, the utility model shows the significant advantage in performance and economy.

[0046] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the range of protection of the utility model.

[0047] 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 also 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.

[0048] 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 describe 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 application described herein can be implemented in an order other than those illustrated or described herein.

[0049] The above merely describes preferred embodiments 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 modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gear disc transmission mechanism for an intermediate motor, comprising a middle shaft arranged in a five-way pipe, a torsion sleeve being arranged on the middle shaft, characterized in that: The big gear assembly is arranged on the torsion sleeve outside the five-way pipe, the big gear assembly is arranged on the moving base assembly, a support is arranged on the big gear assembly, and a toothed disc is arranged on the support; the big gear assembly comprises a gear, a one-way clutch, a ratchet wheel and a support, the ratchet wheel and the one-way clutch are arranged on the inner and outer sides of the support respectively, and a ratchet wheel placing groove for placing the ratchet wheel is arranged at the lower end of the support; the gear is arranged on the one-way clutch, the support is fixed on the support through screws; the ratchet wheel is arranged on the torsion sleeve, and a first bearing is arranged between the support and the middle shaft.

2. A toothed disc transmission mechanism according to claim 1, characterised in that: The support is provided with a positioning groove for placing the first bearing.

3. A toothed disc transmission mechanism according to claim 2, characterised in that: At least two first bearings are placed side by side on the positioning groove.

4. The toothed disc transmission mechanism of claim 1, wherein: An oil seal is arranged between the support on the outer side of the first bearing and the middle shaft.

5. The toothed disc transmission mechanism of claim 1, wherein: A protective cover covering the gear is arranged on the periphery of the one-way clutch, and the protective cover is fixed on the shell of the middle motor.

6. The toothed disc transmission mechanism of claim 1, wherein: A second bearing is arranged on the side of the torsion sleeve away from the big gear assembly, and the second bearing is arranged between the five-way pipe and the middle shaft.

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