CN216618445U

CN216618445U - Speed reducing mechanism of connecting part

Info

Publication number: CN216618445U
Application number: CN202122888067.1U
Authority: CN
Inventors: 李媛媛; 胡浩然
Original assignee: Shanghai Fangfang Intelligent Technology Co ltd
Current assignee: Shanghai Fangfang Intelligent Technology Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-05-27
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a speed reducing mechanism of a connecting part, and particularly relates to the technical field of connecting mechanisms of travel tools. Among the above-mentioned scheme, be connected through meshing between the gear groove of eccentric wheel and shell body, the teeth of a cogwheel quantity in gear groove must be greater than the eccentric wheel, utilize the principle of the poor speed reduction of tooth, it rotates to drive eccentric drive block through the torsion shaft, eccentric drive block drives the eccentric wheel and rotates, speed reduces, the output increases, thereby realize slowing down and the effect of increase moment of torsion, be convenient for accomodate foldingly, when eccentric drive block does not change, because elastic component's elasticity, can reduce from locking hoop both sides gap, thereby pin eccentric drive block, reach the effect of "brake", also, the auto-lock.

Description

Speed reducing mechanism of connecting part

Technical Field

The utility model relates to the technical field of connecting mechanisms of travel tools, in particular to a speed reducing mechanism of a connecting part.

Background

At present, in small-sized travel tools such as some baby carriages or wheelchairs, the tools need to be manually folded by hands for convenient storage, however, in the storage process of electric folding, the output rotating speed of a motor is high, the torque is small, a speed reducing mechanism of a connecting part is lacked, the requirements cannot be met, and as is well known, in the transmission of force, the speed is reduced, the obtained torque is increased, and the electric folding use can be met.

It is therefore desirable to provide a speed reducing mechanism of a connecting portion.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects in the prior art, embodiments of the present invention provide a speed reduction mechanism for a connection portion, so as to solve the problem that the connection portion of the structure in the current transportation tool lacks a mechanism capable of reducing speed and increasing torque, and is inconvenient to fold and store.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a coupling portion's reduction gears, includes the shell body, the inner wall of shell body is provided with the gear groove, defeated power hole has been seted up to the inside of shell body, the inner wall in defeated power hole rotates and is connected with the torsion shaft, the inside in gear groove is provided with the transmission eccentric wheel, the outer wall of torsion shaft is fixed to have cup jointed eccentric drive block, the outer wall of eccentric drive block and the inner wall fixed connection of eccentric wheel, the outer edge of eccentric wheel and the gear groove between the meshing be connected, the outer wall of eccentric drive block is provided with from the lock hoop, the one end of self-locking hoop is connected with elastic component, from the both ends of lock hoop and elastic component's both ends fixed connection.

Preferably, the gear teeth of the gear groove are larger than those of the eccentric wheel.

Preferably, the elastic member may be a torsion spring or a spring.

The technical scheme of the utility model has the following beneficial effects:

among the above-mentioned scheme, be connected through meshing between the gear groove of eccentric wheel and shell body, the teeth of a cogwheel quantity in gear groove must be greater than the eccentric wheel, utilize the principle of the poor speed reduction of tooth, it rotates to drive eccentric drive block through the torsion shaft, eccentric drive block drives the eccentric wheel and rotates, speed reduces, the output increases, thereby realize slowing down and the effect of increase moment of torsion, be convenient for accomodate foldingly, when eccentric drive block does not change, because elastic component's elasticity, can reduce from locking hoop both sides gap, thereby pin eccentric drive block, reach the effect of "brake", also, the auto-lock.

Drawings

FIG. 1 is a schematic view of the overall external structure of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

fig. 3 is a schematic view of the overall back structure of the present invention.

[ reference numerals ]

1. An outer housing; 2. a force transmission hole; 3. an eccentric wheel; 4. a self-locking band; 5. an elastic member; 6. an eccentric drive block.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments, the description of which is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.

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, it need not be further defined and explained in subsequent figures.

As shown in fig. 1-3, an embodiment of the present invention provides a speed reducing mechanism of a connecting portion, which includes an outer casing 1, and is characterized in that a gear groove is formed in an inner wall of the outer casing 1, a force input hole 2 is formed in the outer casing 1, a torsion shaft is rotatably connected to an inner wall of the force input hole 2, a transmission eccentric wheel 3 is arranged in the gear groove, an eccentric driving block is fixedly sleeved on an outer wall of the torsion shaft, an outer wall of the eccentric driving block is fixedly connected to an inner wall of the eccentric wheel 3, an outer edge of the eccentric wheel 3 is in meshing connection with the gear groove, a self-locking hoop 4 is arranged on an outer wall of the eccentric driving block, one end of the self-locking hoop 4 is connected to an elastic member 5, and two ends of the self-locking hoop 4 are fixedly connected to two ends of the elastic member 5.

Wherein, the number of teeth of the gear groove is larger than that of the eccentric wheel 3.

Wherein, the elastic member 5 may be a torsion spring or a spring.

Specifically, in order to increase the self-locking effect, a plurality of fitting blocks can be arranged between the self-locking hoop 4 and the eccentric driving block 6, the fitting blocks are tightly fitted on the outer wall of the eccentric driving block 6 through locking of the self-locking hoop 4, the clamping purpose is achieved, the contact surface with the eccentric driving block 6 is increased, and the self-locking effect is improved.

The working effect of the utility model is as follows:

according to the scheme, the eccentric wheel 3 is meshed with the gear groove of the outer shell 1, the number of gear teeth of the gear groove is larger than that of the eccentric wheel 3, the eccentric driving block 6 is driven to rotate through the torsion shaft by utilizing the principle of differential gear speed reduction, the eccentric driving block 6 drives the eccentric wheel 3 to rotate, the speed is reduced, the output force is increased, the effects of reducing speed and increasing torque are achieved, and the folding and storage are facilitated; when the eccentric driving block 6 does not rotate, the gaps at the two sides of the self-locking hoop 4 can be reduced due to the elasticity of the elastic component 5, so that the eccentric driving block 6 is locked, and the effect of braking, namely self-locking, is achieved.

The points to be finally explained are: the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the drawings, or that is conventionally used in the practice of the utility model, for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a coupling part's reduction gears, includes shell body (1), its characterized in that, the inner wall of shell body (1) is provided with the gear groove, defeated power hole (2) have been seted up to the inside of shell body (1), the inner wall of defeated power hole (2) is rotated and is connected with the torsion shaft, the inside in gear groove is provided with eccentric wheel (3), eccentric drive block (6) have been cup jointed to the outer wall of torsion shaft is fixed, the outer wall of eccentric drive block (6) and the inner wall fixed connection of eccentric wheel (3), the outer edge of eccentric wheel (3) and gear groove between the meshing be connected, the outer wall of eccentric drive block (6) is provided with from lock hoop (4), the one end of self-lock hoop (4) is connected with elastic component (5), the both ends of self-lock hoop (4) and the both ends fixed connection of elastic component (5).

2. A reduction gear mechanism of a coupling part according to claim 1, characterized in that the number of teeth of said gear groove is larger than that of the eccentric wheel (3).

3. A coupling portion decelerating mechanism according to claim 1, wherein said resilient member (5) is a torsion spring or a spring.