KR-20260064254-A - GEAR ASSEMBLEY

KR20260064254AKR 20260064254 AKR20260064254 AKR 20260064254AKR-20260064254-A

Abstract

A gear assembly is disclosed. The gear assembly is characterized by comprising at least one sun gear, at least one planet gear arranged to mesh with the outer circumference of the sun gear, a carrier arranged to be coupled to the center of the planet gear and rotate together with the rotation of the planet gear, a ring gear arranged to be connected to the outer circumference of the planet gear, and a transmission module that adjusts the reduction ratio of the gear assembly by selectively fixing any one of the carrier and the ring gear.

Inventors

이병철
김대수
손형민

Assignees

삼성전자주식회사

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (10)

In a gear assembly, At least one line gear; At least one planet gear arranged to mesh with the outer surface of the above-mentioned sun gear; A carrier coupled to the center of the planet gear and arranged to rotate together with the rotation of the planet gear; A ring gear provided to be connected to the outer surface of the above-mentioned planet gear; and A gear assembly comprising: a transmission module that adjusts the reduction ratio of the gear assembly by selectively fixing either of the carrier and the ring gear.
In paragraph 1, The above transmission module is, A transmission gear configured to selectively mesh with either of the above carrier and the above ring gear; and A gear assembly comprising a transmission motor for rotating the above transmission gear.
In paragraph 2, The above transmission gear has a first screw thread formed on its inner surface, and The above carrier includes a second screw thread formed to engage with the first screw thread, and A gear assembly comprising a ring gear having a third thread formed to mesh with the first thread.
In paragraph 3, The above carrier is, A carrier coupling portion that protrudes and extends from the outer surface of the carrier and has the second screw thread formed thereon; comprising The above ring gear is, A gear assembly comprising: a ring gear coupling portion that protrudes and extends from the outer surface of the ring gear and has the third screw thread formed thereon.
In paragraph 4, A gear assembly in which the carrier coupling portion and the ring gear coupling portion are each formed to have the same diameter with respect to the center of the sun gear.
In paragraph 5, The above ring gear is positioned on the upper side of the carrier, and A gear assembly in which the above transmission gear moves upward from the carrier coupling portion according to the operation of the above transmission motor to fix the ring gear.
In paragraph 6, A gear assembly in which the above transmission gear moves to the lower side of the ring gear coupling portion according to the operation of the above transmission motor to fix the carrier.
In paragraph 1, The above transmission module is, It further includes a connecting member for transmitting power generated from the above-mentioned transmission motor to the above-mentioned transmission gear; and The above transmission gear is a gear assembly having teeth formed on its outer surface to mesh with the above connecting member.
In paragraph 3, The above planet gear includes a first planet gear and a second planet gear arranged in two stages vertically, and The above ring gear is, A first ring gear arranged to be connected to the first planet gear; and A second ring gear provided on the upper side of the first ring gear to be connected to the second planet gear; comprising The above third thread is a gear assembly included in the above first ring gear.
In paragraph 2, It further includes a main motor that generates power to rotate the plurality of gears above, and The power generated by the above main motor is A gear assembly that is transmitted to either the carrier or the ring gear depending on the position of the above transmission gear.

Description

Gear Assembly The present disclosure relates to a gear assembly. 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. FIG. 1 is a perspective view of a gear assembly according to one embodiment of the present disclosure. FIG. 2 is a perspective view of a gear assembly according to one embodiment of the present disclosure. FIG. 3 is an exploded view of a gear assembly according to one embodiment of the present disclosure. FIG. 4 is a schematic diagram illustrating the structure of a gear assembly according to one embodiment of the present disclosure. FIG. 5 is a perspective view of a transmission gear according to one embodiment of the present disclosure. FIG. 6 is a perspective view of a carrier according to one embodiment of the present disclosure. FIG. 7 is a perspective view of a first ring gear according to one embodiment of the present disclosure. FIG. 8 is a drawing for explaining that a transmission gear is coupled to a carrier in a gear assembly according to one embodiment of the present disclosure. FIG. 9 is a drawing for explaining that a transmission gear of a gear assembly according to one embodiment of the present disclosure is coupled to a first ring gear. 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, gear assemblies according to various embodiments will be described in detail with reference to the attached drawings. FIG. 1 is a block diagram for explaining the operation of a gear assembly according to one embodiment of the present disclosure. Referring to FIG. 1, the gear assembly (10) may include a main motor (100), a sun gear (11), a planet gear (12), a carrier (13), a first ring gear (14a), a second ring gear (14b), and a transmission module (200). The main motor (100) is configured to provide power so that each component of t