KR-20260067850-A - ACTUATOR

KR20260067850AKR 20260067850 AKR20260067850 AKR 20260067850AKR-20260067850-A

Abstract

An actuator is disclosed. The actuator is characterized by comprising: an input section receiving power from a motor; an output section receiving power from the input section and transmitting power to the outside of the actuator; a fixed section provided on one side of the output section to change the reduction ratio of the actuator; a first power transmission gear provided between the input section and the output section to form a first power transmission path through which power is transmitted; and a power transmission module connected to the input section and the output section, respectively, to form a second power transmission path through which power is transmitted.

Inventors

김용태
김동현
김진웅
노세곤
박정훈
신교욱

Assignees

삼성전자주식회사

Dates

Publication Date: 20260513
Application Date: 20241106

Claims (15)

In actuators, Input section receiving power from a motor; An output unit that receives power from the input unit and transmits the power to the outside of the actuator; A fixed part provided on one side of the output part to change the reduction ratio of the above actuator; A first power transmission gear arranged between the input portion and the output portion to form a first power transmission path through which the power is transmitted; and An actuator comprising: a power transmission module that is respectively connected to the input section and the output section to form a second power transmission path through which the power is transmitted.
In paragraph 1, The above power transmission module is, A second power transmission gear connected to the above input unit; and An actuator comprising a third power transmission gear connected to the above-mentioned output section.
In paragraph 2, An actuator in which the second power transmission gear is a helical gear structure and the third power transmission gear is a worm gear structure.
In paragraph 3, The above input unit is, It is a two-stage planetary gear assembly formed by stacking vertically to form two stages, and A first line gear coupled to the above motor and rotating when the motor operates; A first planet gear arranged to surround the first sun gear; and A first carrier coupled to the first planet gear and rotating together when the first planet gear revolves; A first ring gear connected to the first planet gear to rotate together when the first planet gear rotates; A second line gear connected to the first carrier and rotating; A second planet gear arranged to surround the second sun gear; A second carrier connected to each of the second planet gears and coupled to the inside of the housing; A second ring gear connected to the second planet gear; comprising The above second power transmission gear is an actuator connected to the above second line gear.
In paragraph 4, The above output unit is, It is a single-stage planetary gear assembly, and Output side sun gear connected to the above-mentioned third power transmission gear; An output-side planet gear arranged to be connected to the output-side sun gear above; An output-side ring gear arranged to be connected to the above-mentioned output-side planet gear; and It includes an output carrier coupled to the output side planet gear to transmit the power transmitted from the input section to the outside of the actuator; The above third power transmission gear is an actuator connected to the above output-side sun gear.
In paragraph 5, An actuator in which the first power transmission gear is configured to be connected to the second ring gear and the output side ring gear, respectively.
In paragraph 6, The above first power transmission gear is A first spur gear connected to the second ring gear; and A second spur gear positioned above the second ring gear and connected to the output side ring gear; comprising An actuator in which the first spur gear is formed to have a larger diameter than the second spur gear.
In paragraph 6, The above fixed part is, A coupling member provided to be coupled to the output-side ring gear above; An actuator comprising: a fixing member for maintaining the coupled state of the coupling member and the output-side ring gear.
In paragraph 8, The above-mentioned fixing member is, A fixing bar for pressing the above-mentioned coupling member; and A fixed base for supporting the above fixed bar; including, The above fixed bar is an actuator rotatably coupled to the above fixed base.
In Paragraph 9, An actuator in which the coupling state of the coupling member and the output-side ring gear changes according to the rotating angle of the fixed bar.
In Paragraph 10, The above fixed base further includes a seating groove for maintaining the coupled state of the coupling member and the output-side ring gear; An actuator in which the above-mentioned seating groove is formed by being recessed into one surface of the fixing base in correspondence with the shape of the fixing bar so that the fixing bar can be inserted.
In Paragraph 11, The above-mentioned fixing member is, An actuator further comprising an elastic body for maintaining the fixed bar inserted into the seating groove.
In paragraph 5, The above second power transmission gear is, A first helical gear coupled to the upper side of the second sun gear; and An actuator comprising: a second helical gear connected to the first helical gear and rotating in a direction perpendicular to the rotational direction of the first helical gear.
In Paragraph 13, The above third power transmission gear is, A worm wheel coupled to the upper side of the output-side sun gear; and A worm connected to the worm wheel and rotating in a direction perpendicular to the rotational direction of the worm wheel; comprising The above worm is an actuator formed in a drum shape.
In Paragraph 13, The above power transmission module is, An actuator further comprising a power transmission shaft connected to the second helical gear and the worm, respectively.

Description

Actuator The present disclosure relates to an actuator. Gears are devices for transmitting power, and as technology advances, increasingly diverse forms of gear assemblies are being used. Among them, planetary gears are gear assemblies designed to reduce the speed of power transmitted from a power source, and are used to transmit power generated from the power source to a power receiving member at high torque or high speed. Although planetary gears can inherently have a single reduction ratio, a form in which a single planetary gear has multiple reduction ratios is also realized by selectively fixing one configuration of the planetary gear. However, due to the structure for fixing the work configuration, the durability of the gear assembly was significantly reduced, and there was a problem where the fixation would release when high torque was applied to the gear assembly. Accordingly, a structure was required to stably fix one component of the gear assembly. FIGS. 1 and FIGS. 2 are perspective views of an actuator according to one embodiment of the present disclosure. FIG. 3 is an exploded view of an input section according to one embodiment of the present disclosure. FIG. 4 is an exploded view of an output section according to one embodiment of the present disclosure. FIG. 5 is a diagram illustrating the path through which power is transmitted in an actuator according to one embodiment of the present disclosure. FIG. 6 is an enlarged view of a first power transmission gear according to one embodiment of the present disclosure. FIG. 7 is an enlarged view of a power transmission module according to one embodiment of the present disclosure. FIG. 8 is an enlarged view of a second power transmission gear according to one embodiment of the present disclosure. FIG. 9 is an enlarged view of a third power transmission gear according to one embodiment of the present disclosure. FIG. 10 is an exploded view of a fixed part according to one embodiment of the present disclosure. FIG. 11 is a state diagram for explaining the operation of a fixed part according to one embodiment of the present disclosure. FIG. 12 is an enlarged view of the seating groove of a fixing part according to one embodiment of the present disclosure. The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In relation to the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise. In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. The term "and/or" includes a combination of multiple related described components or any of the multiple related described components. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order). Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component. Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component. When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components. Hereinafter, actuators according to various embodiments will be described in detail with reference to the attached drawings. FIGS. 1 and 2 are perspective views of an actuator according to an embodiment of the present disclosure. FIG. 3 is an exploded view of an input section according to an embodiment of the present disclosure. FIG. 4 is an exploded vi