Motor tower footing side tooth driving clutch structure

Abstract

The utility model relates to a motor tower footing side tooth driving clutch structure, which is characterized in that a tower footing flange seat is sleeved on the outer surface of one end of a sleeve, a plurality of inclined tooth grooves which are uniformly distributed are circumferentially formed in the tower footing flange seat, inclined teeth meshed with the inclined tooth grooves are arranged on the inner side surface of the sleeve, and the inclined teeth are meshed with each inclined tooth groove; a spring groove is formed in the end, close to the sleeve, of the tower footing flange seat, a spring seat is arranged in the sleeve, a spring is arranged at one end of the spring seat, and the other end of the spring is located in the spring groove. The utility model has the advantages of few parts, compact structure layout, reduced product volume and lighter overall weight.

Description

Technical Field

[0001] The present application belongs to the technical field of electric bicycles, and in particular, relates to a motor tower base side gear drive clutch structure. Background Art

[0002] With the continuous development of electric bicycle motors, consumers have higher and higher requirements for the functionality of bicycles. The previous traditional products are gradually upgraded to high-end products. At the same time, they have high requirements for the weight of the entire bicycle and require it to be lightweight.

[0003] The existing electric bicycle motor is a radial drive method. Due to the limitation of the tower base drive method, the steel balls are arranged at both ends. At the same time, the bead bowl needs to cooperate to form a complete assembly that can rotate freely. In this way, the internal structure is complex and has many parts. It has a certain weight, and the space compression is seriously hindered, which does not meet the demand for lightness. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the shortcomings of the prior art that there are too many parts and the space cannot be compressed, so as to provide a motor tower base side gear drive clutch structure.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A motor tower base side tooth drive clutch structure comprises a tower base flange seat and a sleeve rotating on a shaft, wherein the sleeve outer sleeve is connected to one end of the tower base flange seat, the tower base flange seat is connected to the outer surface of one end of the sleeve and is provided with a plurality of evenly distributed oblique tooth grooves along the circumferential direction, the inner side surface of the sleeve is provided with oblique teeth meshing with the oblique tooth grooves, the oblique teeth mesh with each oblique tooth groove, and transmission is achieved when meshing; a spring groove is opened in one end of the tower base flange seat close to the sleeve, a spring seat is fixed in the sleeve, a spring is fixed to one end of the spring seat, the other end of the spring is located in the spring groove, and the spring groove limits the position of the spring.

[0007] Furthermore, the tower base flange seat and the sleeve are both provided with bearings matched with the shaft, and the shaft is installed between the bearings.

[0008] Furthermore, a retaining spring for preventing the bearing from moving is provided in the sleeve at one end away from the flange seat of the tower base.

[0009] Furthermore, a movable gap is left between the end faces of the sleeve and the tower base flange seat opposite to each other to reduce friction.

[0010] Furthermore, the spring groove is opened along the circumferential direction of the tower base flange seat, and the spring groove is larger than the inner diameter of the tower base flange seat.

[0011] The beneficial effects of the utility model are:

[0012] The outer teeth are meshed with the inner gear of the sleeve, and the oblique teeth are acted upon by the spring force to mesh with the oblique tooth grooves on the tower base, thereby effectively driving the tower base and the tower base to rotate together, otherwise the tower base will not rotate. Compared with the existing structure, the product of the utility model has fewer parts, simpler connection relationship, and is more practical. It also has fewer parts and a compact structure, which can reduce the product volume and is lighter overall. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the prior art structure;

[0015] Figure 2 yes Figure 1 AA cross-sectional structural diagram;

[0016] Figure 3 is a schematic cross-sectional structure diagram of an embodiment of the present application;

[0017] Figure 4 is a schematic diagram of the oblique tooth groove structure of an embodiment of the present application;

[0018] Figure 5 is a schematic diagram of the helical tooth structure of an embodiment of the present application;

[0019] The reference numerals in the figure are:

[0020] 1. Freewheel base flange seat, 2. Oil seal, 3. Steel ball, 4. Sleeve, 5. Claw spring, 6. Pawl, 7. Adjustment washer, 8. Bead bowl, 9. Spring groove, 10. Freewheel base flange seat, 11. Oblique teeth, 12. Spring, 13. Spring seat, 14. Sleeve, 15. Bearing, 16. Circlip, 17. Oblique tooth groove. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0024] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] Example

[0026] Combined with Figure 3-5 The present embodiment provides a motor tower base side gear drive clutch structure, including a tower base flange seat 10 and a sleeve 14 rotatably connected to the shaft. The sleeve 14 is outer-engaged on one end of the tower base flange seat 10. A movable gap is left between the sleeve 14 and the opposite end faces of the tower base flange seat 10, and the two do not directly transmit power. At the same time, such a design reduces friction.

[0027] The outer surface of one end of the tower base flange seat 10 sleeves the sleeve 14 and is provided with a plurality of evenly distributed oblique tooth grooves 17 along the circumferential direction. The inner side of the sleeve 14 is provided with oblique teeth 11 meshing with the oblique tooth grooves 17. The oblique teeth 11 can mesh with each oblique tooth groove 17. When meshing, transmission is realized, and when not meshing, there is no transmission relationship.

[0028] A spring groove 9 is opened in one end of the freewheeling flange seat 10 close to the sleeve 14, and a spring seat 13 is fixed in the sleeve 14. A spring 12 is fixed at one end of the spring seat 13, and the other end of the spring 12 is located in the spring groove 9. The spring groove 9 is opened circumferentially along the freewheeling flange seat 10, and the diameter between the spring groove 9 and the freewheeling flange seat 10 is larger than the inner diameter of the freewheeling flange seat 10. The spring groove 9 limits the position of the spring 12, and the spring force can support the oblique teeth 11 of the sleeve to engage with the oblique tooth grooves 17 to realize transmission.

[0029] The freehub flange seat 10 and the sleeve 14 are both provided with bearings 15 matched with the shaft, and the shaft is installed between the bearings 15; a retaining spring 16 is installed in the sleeve 14 and at one end away from the freehub flange seat 10 to prevent the bearing 15 from moving.

[0030] From the existing technology Figure 1 and Figure 2 In particular, it can be seen from the AA section that this structure belongs to the radial drive mode. Due to the limitation of the freehub drive mode, the steel balls at both ends are arranged. At the same time, the bead bowl is required to form a complete assembly that can rotate freely. In this way, the internal structure is complex and has many parts, and the amount of space compression is seriously hindered, which can no longer meet customer needs.

[0031] The working principle of this utility model product:

[0032] The traditional Figure 1 , Figure 2 The pawl structure of the mid-radial drive is changed to an oblique tooth groove with flat oblique teeth, and is directly made on the freehub flange seat of the freehub to form external teeth, and the sleeve is also provided with a gear composed of multiple oblique teeth, so that the two parts form a set of gear pairs.

[0033] When the sleeve rotates, the outer teeth on the freehub flange seat mesh with the inner gear of the sleeve, and the oblique teeth are meshed with the oblique tooth grooves on the freehub base by the spring force, which effectively drives the freehub base to rotate together. When the freehub flange seat rotates due to the rotation of the motor, the oblique tooth grooves will generate a lateral thrust to push the oblique tooth compression spring to move toward the freehub flange seat, thus achieving the effect of separation, and at this time, the freehub flange seat will not be driven to rotate.

[0034] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A motor tower base side gear drive clutch structure, comprising a tower base flange seat and a sleeve rotating on a shaft, characterized in that: The outer surface of one end of the torpedo base flange seat is sleeved with a sleeve and is provided with a plurality of evenly distributed oblique tooth grooves along the circumferential direction. The inner side surface of the sleeve is provided with oblique teeth that mesh with the oblique tooth grooves, and the oblique teeth mesh with each oblique tooth groove. A spring groove is provided in the end of the torpedo base flange seat close to the sleeve, a spring seat is provided in the sleeve, a spring is provided at one end of the spring seat, and the other end of the spring is located in the spring groove.

2. A motor tower base side gear drive clutch structure according to claim 1, characterized in that: The tower base flange seat and the sleeve are both provided with bearings matched and connected with the shaft.

3. A motor tower base side gear drive clutch structure according to claim 2, characterized in that: A retaining spring for preventing the bearing from moving is arranged in the sleeve at one end away from the flange seat of the tower base.

4. A motor tower base side gear drive clutch structure according to claim 1, characterized in that: A movable gap is arranged between the end faces of the sleeve and the tower base flange seat which are opposite to each other.

5. The motor tower base side gear drive clutch structure according to claim 1, characterized in that: The spring groove is opened along the circumferential direction of the tower base flange seat, and the spring groove is larger than the inner diameter of the tower base flange seat.

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