阅读说明：本技术 蜗杆自锁式单向转动机构 (Worm self-locking type unidirectional rotating mechanism ) 是由 广军 于 2021-01-08 设计创作，主要内容包括：本发明蜗杆自锁式单向转动机构,涉及机械传动技术领域,尤其涉及用于汽车和机床上的单向转动机构。本发明的外框架中心轴装于外框架的中心；外框架中心轴左侧并列装有中心轴前圆柱齿轮和一个中心轴后圆柱齿轮；外框架中心轴上下对称各装有一个内框架轴；两个内框架轴上各装有一个内框蜗轮蜗杆结构和内框架轴圆柱齿轮,内框蜗轮蜗杆结构和内框架轴圆柱齿轮分别与中心轴后圆柱齿轮和中心轴前圆柱齿轮相啮合；外框架内圆柱齿轮通过轴套装于内框蜗轮蜗杆结构右侧的内框架轴上,并与内框蜗轮蜗杆结构相啮合连接。本发明的技术方案解决了现有技术中的现有单向轴承(超越离合器)存在出现溜滑角、自动补偿磨损能力低、承载和抗冲击能力低、只能用于低速轻载场合的问题。(The invention discloses a worm self-locking type unidirectional rotating mechanism, relates to the technical field of mechanical transmission, and particularly relates to a unidirectional rotating mechanism used on automobiles and machine tools. The central shaft of the outer frame is arranged in the center of the outer frame; a central shaft front cylindrical gear and a central shaft rear cylindrical gear are arranged on the left side of the central shaft of the outer frame in parallel; the central shaft of the outer frame is provided with an inner frame shaft in an up-down symmetrical way; an inner frame worm gear structure and an inner frame shaft cylindrical gear are respectively arranged on the two inner frame shafts, and the inner frame worm gear structure and the inner frame shaft cylindrical gear are respectively meshed with the central shaft rear cylindrical gear and the central shaft front cylindrical gear; the inner cylindrical gear of the outer frame is sleeved on the inner frame shaft on the right side of the worm gear structure of the inner frame through a shaft and is meshed and connected with the worm gear structure of the inner frame. The technical scheme of the invention solves the problems that the existing one-way bearing (overrunning clutch) in the prior art has slip angle, low automatic compensation wear capability and low bearing and impact resistance capability and can only be used in low-speed and light-load occasions.)

1. The self-locking unidirectional rotation mechanism for the worm is characterized by comprising the following components: the device comprises an outer frame (1), an outer frame central shaft (15), a central shaft front cylindrical gear (3), a central shaft rear cylindrical gear (4), an inner frame shaft cylindrical gear (6), an inner frame shaft (16), an inner frame worm and gear structure and an outer frame inner cylindrical gear (14);

the outer frame central shaft (15) is sleeved in the center of the outer frame (1) through a shaft;

a central shaft front cylindrical gear (3) and a central shaft rear cylindrical gear (4) are arranged on the left side of the outer frame central shaft (15) in parallel;

n inner frame shafts (16) are uniformly distributed on the outer frame (1) by taking an outer frame central shaft (15) as a circle center;

each inner frame shaft (16) is provided with an inner frame worm gear structure, and the inner frame worm gear structure is meshed with the central shaft rear cylindrical gear (4);

an inner frame shaft cylindrical gear (6) is fixedly arranged on each inner frame shaft (16), and the inner frame shaft cylindrical gears (6) are meshed with the central shaft front cylindrical gear (3);

and the inner cylindrical gear (14) of the outer frame is sleeved on an inner frame shaft (16) on the right side of the worm gear structure of the inner frame through a shaft and is meshed and connected with the worm gear structure of the inner frame.

2. The worm self-locking type unidirectional rotation mechanism as claimed in claim 1, wherein the inner frame worm and gear structure comprises: the device comprises an inner frame (2), an inner frame cylindrical gear (5), a worm wheel (7), a worm support (8), a worm (9), a worm conical gear (10), a conical gear (11), a gear shaft (12) and a cylindrical gear (13);

the middle part of the inner frame (2) is sleeved on an inner frame shaft (16) through a shaft;

the inner frame cylindrical gear (5) is fixedly connected with the left side of the inner frame (2) and is meshed with the central shaft rear cylindrical gear (4);

the worm wheel (7) is fixedly arranged on the inner frame shaft (16) and is positioned in the middle of the inner frame (2);

the worm support (8) is fixed on the inner frame (2);

the worm (9) is of a right-handed structure, is fixedly arranged on the worm support (8) and is meshed with the worm wheel (7) to form a worm transmission structure, and the worm transmission structure has a self-locking function and only can drive the worm wheel (7) to rotate by the worm (9);

the worm conical gear (10) is fixedly arranged on the worm (9);

the bevel gear (11) is fixedly connected with the left side of the gear shaft (12) and is meshed with the worm bevel gear (10);

the cylindrical gear (13) is fixedly connected with the right side of the gear shaft (12) and is meshed with the cylindrical gear (14) in the outer frame;

the gear shaft (12) is sleeved on the inner frame (2) through a shaft.

3. The worm self-locking type unidirectional rotation mechanism of claim 2, wherein an elastic structure is arranged between the gear shaft (12) and the cylindrical gear (13), and comprises: a left spring (18) and a right spring (17);

spring fixing clips are symmetrically arranged on the axis of the end part of the gear shaft (12);

the inner wall of the cylindrical gear (13) is provided with spring fixing clips with symmetrical axes;

the left spring (18) and the right spring (17) are symmetrically arranged between the spring fixing clips on the two sides.

Technical Field

The invention discloses a worm self-locking type unidirectional rotating mechanism, relates to the technical field of mechanical transmission, and particularly relates to a unidirectional rotating mechanism used on automobiles and machine tools.

Background

At present, a one-way bearing (also called an overrunning clutch) used on an automobile, a motorcycle or a machine tool adopts a wedge type or slope and roller structure design, has the problems of low slip angle, low automatic compensation wear capacity, low bearing and impact resistance and the like, and is easy to cause serious safety accidents due to the failure of parts and increase energy consumption.

Aiming at the problems in the prior art, a novel self-locking unidirectional rotating mechanism with a worm gear structure is researched and designed, so that the problem in the prior art is very necessary to be solved.

Disclosure of Invention

The existing one-way bearing (overrunning clutch) proposed according to the prior art has the technical problems of slip angle, low automatic compensation abrasion capability, low bearing and impact resistance capability and can only be used in low-speed and light-load occasions, and the worm self-locking one-way rotating mechanism is provided. The invention mainly utilizes the self-locking function of the spring and the worm drive, and the inner frame, the outer frame, the gear and the shaft to realize the effect of unidirectional rotation.

The technical means adopted by the invention are as follows:

a self-locking unidirectional rotation mechanism of a worm comprises: the device comprises an outer frame, an outer frame central shaft, a central shaft front cylindrical gear, a central shaft rear cylindrical gear, an inner frame shaft, an inner frame worm and gear structure and an outer frame inner cylindrical gear;

furthermore, the central shaft of the outer frame is sleeved in the center of the outer frame through a shaft;

furthermore, a central shaft front cylindrical gear and a central shaft rear cylindrical gear are arranged on the left side of the central shaft of the outer frame in parallel;

furthermore, N inner frame shafts are uniformly distributed on the outer frame by taking the central shaft of the outer frame as the circle center;

furthermore, each inner frame shaft is provided with an inner frame worm gear structure, and the inner frame worm gear structure is meshed with the rear cylindrical gear of the central shaft;

furthermore, an inner frame shaft cylindrical gear is fixedly arranged on each inner frame shaft and is meshed with the central shaft front cylindrical gear;

furthermore, the inner cylindrical gear of the outer frame is sleeved on the inner frame shaft on the right side of the inner frame worm gear structure through a shaft, and is meshed and connected with the inner frame worm gear structure.

Further, the inside casing worm gear structure includes: the inner frame, the inner frame cylindrical gear, the worm wheel, the worm bracket, the worm conical gear, the gear shaft and the cylindrical gear;

furthermore, the middle part of the inner frame is sleeved on the inner frame shaft through a shaft;

furthermore, the cylindrical gear of the inner frame is fixedly connected with the left side of the inner frame and is meshed with the cylindrical gear behind the central shaft;

further, the worm wheel is fixedly arranged on the inner frame shaft and positioned in the middle of the inner frame;

further, the worm support is fixed on the inner frame;

furthermore, the worm is of a right-handed structure, is fixedly arranged on the worm support and is meshed with the worm wheel to form a worm transmission structure, and the worm transmission structure has a self-locking function and only can drive the worm wheel to rotate;

further, the worm bevel gear is fixedly arranged on the worm;

furthermore, the bevel gear is fixedly connected with the left side of the gear shaft and is meshed with the worm bevel gear;

furthermore, the cylindrical gear is fixedly connected with the right side of the gear shaft and is meshed with the cylindrical gear in the outer frame;

further, the gear shaft is journaled to the inner frame by a bushing.

Further, be provided with elastic construction between gear shaft and the cylindrical gear, include: a left spring and a right spring;

furthermore, spring fixing clips are symmetrically arranged on the axis of the end part of the gear shaft;

furthermore, spring fixing clips with symmetrical axes are arranged on the inner wall of the cylindrical gear;

furthermore, the left spring and the right spring are symmetrically arranged between the spring fixing clips on the two sides.

The working state of the invention is as follows:

the outer frame rotates towards one direction, and the inner frame is driven by the outer frame through an inner frame shaft to rotate in the same direction; the cylindrical gear in the outer frame drives the cylindrical gear to rotate, and the cylindrical gear and the gear shaft rotate in opposite directions under the pushing of the left spring and the right spring. The gear shaft drives the bevel gear to rotate, the bevel gear drives the worm bevel gear to rotate, and the worm bevel gear drives the worm to rotate. The inner frame shaft cylindrical gear drives the worm gear to rotate through the inner frame shaft. Because, the transmission ratio of the cylindrical gear at the back of the central shaft to the cylindrical gear of the inner frame is different from the transmission ratio of the cylindrical gear at the front of the central shaft to the cylindrical gear of the inner frame shaft. The worm wheel rotates in the opposite direction to the worm wheel in the worm drive. Moreover, the worm transmission has a self-locking function. Therefore, the outer frame drives the central shaft to rotate in the same direction.

And secondly, the outer frame rotates towards the other direction, and the inner frame is driven by the outer frame through the inner frame shaft to rotate in the same direction. The cylindrical gear in the outer frame drives the cylindrical gear to rotate, the cylindrical gear pushes the left spring and the right spring, the left spring and the right spring push the gear shaft to rotate, and the cylindrical gear and the gear shaft rotate in the same direction. The gear shaft drives the bevel gear to rotate, the bevel gear drives the worm bevel gear to rotate, and the worm bevel gear drives the worm to rotate. The inner frame shaft cylindrical gear drives the worm gear to rotate through the inner frame shaft. Because the transmission ratio of the cylindrical gear behind the central shaft to the cylindrical gear of the inner frame is different from that of the cylindrical gear in front of the central shaft to the cylindrical gear of the shaft of the inner frame, the worm transmission can compensate the rotation speed difference between the two transmission ratios. Therefore, the outer frame rotates in the other direction, and the central shaft can not rotate or rotate in the opposite direction.

Compared with the prior art, the invention has the following advantages:

under the action of the self-locking function of the spring and the worm, the worm self-locking type one-way rotating mechanism provided by the invention has the advantages of close fitting and no clearance between all transmission parts, no slip angle, capability of automatically compensating the abrasion of the parts, strong bearing capacity and impact resistance, reliability in operation and long service life in mechanical transmission such as intermittent feeding, reverse rotation prevention, overrunning clutch and the like, and is suitable for occasions with various rotating speeds and loads.

In conclusion, the technical scheme of the invention solves the problems that the existing one-way bearing (overrunning clutch) in the prior art has slip angle, low automatic compensation wear capability, low bearing and impact resistance capability and can only be used in low-speed and light-load occasions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an elastic structure between a gear shaft and a cylindrical gear according to the present invention;

FIG. 3 is a side view of the assembly of the inner frame with the worm support;

fig. 4 is a top view of the assembly of the inner frame with the worm support.

In the figure: 1. the device comprises an outer frame 2, an inner frame 3, a central shaft front cylindrical gear 4, a central shaft rear cylindrical gear 5, an inner frame cylindrical gear 6, an inner frame shaft cylindrical gear 7, a worm wheel 8, a worm support 9, a worm 10, a worm conical gear 11, a conical gear 12, a gear shaft 13, a cylindrical gear 14, an outer frame inner cylindrical gear 15, an outer frame central shaft 16, an inner frame shaft 17, a right spring 18 and a left spring.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

Example one

As shown in fig. 1, the present invention provides a self-locking unidirectional rotation mechanism for worm, comprising: the device comprises an outer frame 1, an outer frame central shaft 15, a central shaft front cylindrical gear 3, a central shaft rear cylindrical gear 4, an inner frame shaft cylindrical gear 6, an inner frame shaft 16, an inner frame worm gear structure and an outer frame inner cylindrical gear 14; the outer frame central shaft 15 is sleeved in the center of the outer frame 1 through a shaft; a central shaft front cylindrical gear 3 and a central shaft rear cylindrical gear 4 are arranged on the left side of the outer frame central shaft 15 in parallel; n inner frame shafts 16 are uniformly distributed on the outer frame 1 by taking the outer frame central shaft 15 as the circle center; each inner frame shaft 16 is provided with an inner frame worm gear structure, and the inner frame worm gear structure is meshed with the central shaft rear cylindrical gear 4; an inner frame shaft cylindrical gear 6 is fixedly arranged on each inner frame shaft 16, and the inner frame shaft cylindrical gears 6 are meshed with the central shaft front cylindrical gear 3; the outer frame inner cylindrical gear 14 is sleeved on an inner frame shaft 16 on the right side of the inner frame worm gear structure through a shaft, and is meshed and connected with the inner frame worm gear structure.

As shown in fig. 1, the inner frame worm gear structure includes: the inner frame 2, the inner frame cylindrical gear 5, the worm wheel 7, the worm bracket 8, the worm 9, the worm conical gear 10, the conical gear 11, the gear shaft 12 and the cylindrical gear 13; the middle part of the inner frame 2 is sleeved on an inner frame shaft 16 through a shaft; the inner frame cylindrical gear 5 is fixedly connected with the left side of the inner frame 2 and is meshed with the central shaft rear cylindrical gear 4; the worm wheel 7 is fixedly arranged on the inner frame shaft 16 and is positioned in the middle of the inner frame 2; the worm support 8 is fixed on the inner frame 2; the worm 9 is of a right-handed structure, is fixedly arranged on the worm support 8 and is meshed with the worm wheel 7 to form a worm transmission structure, the worm transmission structure has a self-locking function, and only the worm 9 can drive the worm wheel 7 to rotate; a worm conical gear 10 is fixedly arranged on the worm 9; the bevel gear 11 is fixedly connected with the left side of the gear shaft 12 and is meshed with the worm bevel gear 10; the cylindrical gear 13 is fixedly connected with the right side of the gear shaft 12 and is meshed with the cylindrical gear 14 in the outer frame; the gear shaft 12 is journalled to the inner frame 2.

As shown in fig. 2, an elastic structure is provided between the gear shaft 12 and the cylindrical gear 13, and includes: left and right springs 18 and 17; spring fixing clips are symmetrically arranged on the axis of the end part of the gear shaft 12; spring fixing clips with symmetrical axes are arranged on the inner wall of the cylindrical gear 13; the left spring 18 and the right spring 17 are symmetrically arranged between the spring fixing clips at two sides.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.