Driving device of electric rotating seat

Abstract

The present invention relates to a driving device for an electric rotary seat, comprising: a housing mounted on a base plate side and coupled to a brake ring; a pinion which is connected to a rotating shaft of the motor and receives rotational force when the motor is driven; an adapter gear coupled with the pinion gear and rotating together with the pinion gear; the clutch is rotatably arranged on the inner side of the brake ring and is meshed with the adapter gear; a brake wedge rotatably provided on an inner side of the brake ring and rotated by the clutch; the plurality of brake rollers are arranged between the brake wedge and the brake ring and are used for limiting or releasing the rotation of the brake wedge relative to the brake ring; a cover plate coupled to the housing with the brake ring interposed therebetween; and a spacer provided between the cover plate and the brake wedge for supporting the brake wedge toward the clutch side, the brake wedge being movably provided between the spacer and the clutch in a radial direction to improve operational sensitivity.

Description

Technical Field

[0001] The present invention relates to a drive device for an electrically operated rotating seat, and more specifically, to a drive device for an electrically operated rotating seat that provides rotational driving force for a rotating seat in a vehicle. Background Technology

[0002] A swivel seat is a seat that can rotate so that passengers can turn in the desired direction inside the vehicle. Typically, swivel seats operate via a drive mechanism that includes a motor.

[0003] The drive mechanism for the rotating seat includes: a fixed frame, mounted and fixed on the floor of the vehicle; a rotating frame, rotatably mounted on the upper side relative to the fixed frame, with the seat cushion frame mounted on the upper side; an annular retainer, disposed between the fixed frame and the rotating frame, capable of supporting their relative rotation; a motor, mounted on the fixed frame; a reduction mechanism, linkageably mounted on the rotating shaft of the motor; and a clutch gear and a brake wedge, linkageably connected between the output side of the reduction mechanism and the rotating frame.

[0004] At this point, the reduction mechanism can use a worm gear connected to the motor shaft, a reduction gear meshing with the worm gear, and gears meshing between the reduction gear and the clutch gear to transmit the motor's power to the support.

[0005] However, the reduction mechanism of the aforementioned conventional drive device has the following problem: due to the large number of meshing gears, the assembly parts between the gears may have size dispersion, which may generate friction noise or vibration.

[0006] Furthermore, since the motor and drive unit are supplied as a single module, there are issues with managing the dimensions between the gears of the motor and the reduction mechanism, leading to a decrease in product quality.

[0007] Furthermore, the rotating frame rotates under the constraint of the fixed frame, especially when the rotating axis of the rotating frame rotates in a fixed state, which leads to reduced operating efficiency and sensitivity.

[0008] In addition, when external force is input through the seat or a large load is generated, the external force will be directly transmitted to the motor and reduction mechanism, causing damage to the motor and reduction mechanism. Summary of the Invention

[0009] The problem the invention aims to solve

[0010] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a drive device for an electric rotating seat, which allows the rotating frame to rotate without restriction relative to the fixed frame, thereby improving the operating sensitivity and driving smoothly.

[0011] Furthermore, the present invention aims to provide a drive device for an electric rotating seat, wherein the drive module and the rotating module are provided as separate modules and then assembled and set between the rotating frame and the fixed frame, thereby facilitating dimensional and tolerance management and improving assemblability.

[0012] In particular, the present invention aims to provide a drive device for an electric rotating seat, wherein the drive module is driven stably and noise and vibration are reduced because a structure guiding the position of the drive module is provided inside the rotating module.

[0013] Furthermore, the present invention aims to provide a drive device for an electrically rotating seat that can prevent external forces from being transmitted to the drive module even if they are input through the seat or a large load is generated, thereby preventing damage to the drive module caused therefrom.

[0014] Furthermore, the present invention aims to provide a drive device for an electric rotating seat, which, since the clutch is formed by the pressing engagement of the gear part and the unlocking part, can improve the strength of the gear meshing while reducing collision noise and vibration with the brake roller and brake wedge.

[0015] Problem-solving methods

[0016] To address the aforementioned technical problems, the present invention relates to a drive device for an electric rotating seat, comprising: a housing mounted on the base plate side and engaged with a brake ring; a pinion connected to the rotating shaft of a motor and receiving rotational force when the motor is driven; an adapter gear engaged with the pinion and rotating together with it; a clutch rotatably disposed inside the brake ring and meshing with the adapter gear; a brake wedge rotatably disposed inside the brake ring and rotating via the clutch; a plurality of brake rollers disposed between the brake wedge and the brake ring for limiting or releasing the rotation of the brake wedge relative to the brake ring; a cover plate engaged with the housing across the brake ring; and a spacer disposed between the cover plate and the brake wedge for supporting the brake wedge toward the clutch side, the brake wedge being radially movably disposed between the spacer and the clutch.

[0017] The drive unit of the electric rotating seat further includes: a fixed frame fixed to the housing and the base plate; and a rotating frame fixed to the brake wedge and the seat, wherein the rotating frame is rotatably disposed on the upper part of the fixed frame and the rotating shaft is movably disposed.

[0018] The brake ring may have a pinion guide hole for inserting the end of the pinion.

[0019] The cover plate may have an auxiliary guide hole, which is formed corresponding to the pinion guide hole.

[0020] The clutch may have at least one unlocking protrusion that protrudes from one surface of the clutch and presses against the brake roller in a circumferential direction when rotated. The unlocking protrusion has a protrusion that protrudes from the surface that presses against the brake roller and presses against the brake roller in a circumferential direction and radially inward.

[0021] Furthermore, the drive device for the electric rotating seat of the present invention includes: a drive module including a motor and a gearbox housing the motor; and a rotating module disposed between a base plate and a seat, the rotating module including: a housing mounted on the base plate side and engaged with a brake ring; a clutch rotatably disposed inside the brake ring; an adapter gear rotatably driven by the drive module and engaging with the clutch to rotate the clutch; a brake wedge rotatably disposed inside the brake ring and rotated by the clutch; and a plurality of brake rollers disposed between the brake wedge and the brake ring for limiting or releasing the rotation of the brake wedge relative to the brake ring, the drive module including a pinion connected to the rotating shaft of the motor, receiving rotational force when the motor is driven and transmitting the rotational force to the rotating module, the pinion being fixed to the adapter gear and at least a portion thereof being inserted into a pinion guide hole formed on the brake ring.

[0022] The adapter gear has an insertion hole for inserting the pinion, the pinion has an adapter that is inserted into the insertion hole, and a plurality of adapter grooves are formed on its outer peripheral surface at equal intervals along the circumferential direction. The adapter gear also has an adapter protrusion that protrudes from the inner peripheral surface of the insertion hole so as to be inserted into any one of the plurality of adapter grooves.

[0023] The pinion includes: a pinion body fixed to the drive module; an adapter passing through the housing and connected to the adapter gear; and a pinion end inserted into the pinion guide hole.

[0024] It also includes a cover plate, which is connected to the housing via the brake ring. The cover plate may have an auxiliary guide hole, which is formed corresponding to the pinion guide hole.

[0025] Invention Effects

[0026] The drive device for the electric rotating seat according to the present invention has one or more of the following effects.

[0027] First, according to the present invention, as described above, the drive device for the electric rotating seat according to the present invention rotates the rotating frame without restriction relative to the fixed frame, thereby improving the operating sensitivity and driving smoothly.

[0028] Furthermore, providing the drive module and rotation module as separate modules for later assembly and setup between the rotating frame and the fixed frame facilitates dimensional and tolerance management and improves assemblability.

[0029] In particular, because a structure guiding the position of the drive module is set inside the rotating module, the drive module is driven stably, and noise and vibration are reduced.

[0030] Furthermore, even if external forces are input through the seat or a large load is generated, it can prevent them from being transmitted to the drive module, thereby preventing damage to the drive module caused by this.

[0031] In addition, since the clutch is formed by pressing together the gear part and the unlocking part, the strength of the gear meshing can be improved, while reducing collision noise and vibration with the brake roller and brake wedge. Attached Figure Description

[0032] Figure 1 This is a perspective view of the drive device for an electric rotating seat according to an embodiment of the present invention.

[0033] Figure 2 yes Figure 1 A sectional view.

[0034] Figure 3 It is shown Figure 1 A three-dimensional view showing the separation of the fixed frame and the rotating frame.

[0035] Figure 4 yes Figure 3 An exploded 3D diagram.

[0036] Figure 5 This is a cross-sectional view of the rotating module of the drive device for an electric rotating seat according to an embodiment of the present invention.

[0037] Figure 6 and Figure 7 This is an exploded perspective view of the rotation module of the drive device for an electric rotating seat according to an embodiment of the present invention.

[0038] Figure 8 This is an exploded perspective view of the clutch of the drive device of an electric rotating seat according to an embodiment of the present invention.

[0039] Figure 9 This is an exploded perspective view showing the brake ring, adapter gear, pinion, and drive module in the drive device of an electric rotating seat according to an embodiment of the present invention.

[0040] Figure 10 This is a cross-sectional view illustrating the engagement state of the adapter gear and pinion of the drive device of the electric rotating seat according to an embodiment of the present invention.

[0041] Figure 11 It is magnification Figure 10 Enlarged view of the engagement part of the adapter gear and pinion.

[0042] Figure 12 This is a cross-sectional view illustrating the operating structure of the clutch, brake wedge, and brake roller of the drive device for an electric rotating seat according to an embodiment of the present invention.

[0043] Figure 13 It is used for explanation Figure 12 An enlarged view of the rotation of the brake wedge.

[0044] Symbol explanation:

[0045] 10: Drive unit

[0046] 100: Drive module; 110: Motor

[0047] 200: Rotating module; 210: Housing

[0048] 220: Adapter gear; 221: Insertion hole

[0049] 222: Adapter protrusion; 230: Wheel cover

[0050] 240: Brake ring; 241: Pinion guide section

[0051] 242: Pinion guide hole; 250: Clutch

[0052] 251: Unlocking part 251a: Unlocking protrusion

[0053] 251b: Protrusion 251c: Joint

[0054] 251d: Press-in groove; 251e: Deformation protrusion

[0055] 252: Gear section 252a: Gear teeth

[0056] 252b: Press-in protrusion; 260: Brake wedge

[0057] 270: Brake roller; 280: Cover plate

[0058] 281: Auxiliary guide section; 282: Auxiliary guide hole

[0059] 290: Spacer; 300: Pinion

[0060] 310: Small gear body; 320: Adapter

[0061] 321: Adapter groove; 330: Pinion end. Detailed Implementation

[0062] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0063] This invention can be modified in various ways and can have various embodiments, specific embodiments of which will be shown in the accompanying drawings and described in detail in the detailed description. This is not intended to limit the invention to the specific embodiments, but should be construed as including all modifications, equivalents, or substitutions that fall within the spirit and technical scope of the invention.

[0064] In describing this invention, the terms "first," "second," etc., can be used to describe various components, but the components described above are not limited by these terms. These terms are only used to distinguish one component from another. For example, without departing from the scope of protection of this invention, a first component can be named a second component, and similarly, a second component can be named a first component.

[0065] The term “and / or” can include a combination of multiple related listed items or any one of multiple related listed items.

[0066] When we say a component is "connected" or "coupled" to another component, it can be understood as it being directly connected or coupled to the other component, but it can also mean that there is another component in between. On the other hand, when we say a component is "directly connected" or "directly coupled" to another component, it can be understood as meaning that there are no other components in between.

[0067] The terminology used in this application is for describing specific embodiments only and is not intended to limit the invention. Singular expressions may include plural expressions unless the context clearly distinguishes them.

[0068] In this application, the terms "comprising" or "having" are intended to specify the presence of features, numbers, steps, actions, components, parts or combinations thereof described in the specification, and may be understood to not preclude the possibility of the presence or addition of one or more other features, numbers, steps, actions, components, parts or combinations thereof.

[0069] Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms, such as those defined in common dictionaries, may be interpreted as having a meaning consistent with their meaning in the relevant technical context and may not be interpreted as having an idealized or overly formal meaning, unless expressly defined in this application.

[0070] Furthermore, the following embodiments are provided to give a more complete explanation to those skilled in the art, and for clarity, the shapes and sizes of the elements in the accompanying drawings may be exaggerated.

[0071] Figure 1 A perspective view of the drive device for an electrically rotating seat according to an embodiment of the present invention is shown. Figure 2 It shows Figure 1 sectional view, Figure 3 It shows Figure 1 A three-dimensional view showing the separation of the fixed frame and the rotating frame. Figure 4 It shows Figure 3 Decomposed 3D diagram, Figure 5 A cross-sectional view of the rotating module of the drive device for an electrically operated rotating seat according to an embodiment of the present invention is shown. Figure 6 and Figure 7 An exploded perspective view of the rotation module of the drive device for an electrically operated rotating seat according to an embodiment of the present invention is shown. Figure 8 An exploded perspective view of the clutch of the drive device of an electric rotating seat according to an embodiment of the present invention is shown. Figure 9 An exploded perspective view of the brake ring, adapter gear, pinion, and drive module in the drive mechanism of an electric rotating seat according to an embodiment of the present invention is shown. Figure 10 A cross-sectional view is shown illustrating the engagement state of the adapter gear and pinion of the drive mechanism for an electric rotating seat according to an embodiment of the present invention. Figure 11 Enlarged Figure 10 Enlarged view of the engagement part of the adapter gear and pinion. Figure 12 A cross-sectional view is shown to illustrate the operating structure of the clutch, brake wedge, and brake roller of the drive device for an electric rotating seat according to an embodiment of the present invention. Figure 13 The illustration is shown Figure 12 An enlarged view of the rotation of the brake wedge.

[0072] like Figure 1 and Figure 2 As shown, the drive device 10 of the electric rotating seat according to the present invention is disposed between the fixed frame 20 and the rotating frame 30, and rotates the seat during operation.

[0073] As an example, the mounting frame 20 can be mounted on the vehicle's floor (not shown), or it can be part of the floor. The mounting frame 20 is a component fixed to the vehicle and can be combined with the housing 210 described later.

[0074] As an example, the rotating frame 30 can be mounted on a seat (not shown), or it can be a frame that constitutes the seat. The rotating frame 30 is configured to rotate relative to the fixed frame 20 when driven by the drive unit 10, and can engage with the brake wedge 260 described later.

[0075] In addition, such as Figure 3 and Figure 4 As shown, the drive mechanism of the electric rotating seat according to the present invention includes a drive module 100, a rotating module 200, and a pinion 300, wherein the rotating module 200 and the drive module 100 are respectively assembled and provided in a modular form. The pinion 300 may be provided as a separate component or may be assembled into the drive module 100.

[0076] In other words, the drive module 100 includes a motor 110 and a pinion 300, and is provided as a separate module, which is then assembled into the rotary module 200, thereby facilitating tolerance management and assembly.

[0077] The rotating module 200 is driven by the drive module 100 and may include components for supporting the rotation of the fixed frame 20 and the rotating frame 30. Specifically, the rotating module 200 may include an adapter gear 220 connected to the drive module 100. Furthermore, the rotating module 200 may also include a housing 210, a wheel cover 230, a brake ring 240, a clutch 250 engaging with the adapter gear 220, a brake wedge 260, a brake roller 270, and a cover plate 280.

[0078] At least a portion of the drive module 100 is coupled to the fixed component or fixed frame 20 of the rotation module 200, while the pinion 300 disposed on the drive module 100 is connected to the rotating component of the rotation module 200.

[0079] As an example, when at least a portion of the drive module 100 is engaged with the rotating module 200 or the fixed frame 20, the pinion 300 is connected to the adapter gear 220. In this case, if the pinion 300 is connected to the adapter gear 220, the rotation axis of the pinion 300 is coaxial with the rotation axis of the adapter gear 220, and when the pinion 300 rotates, the adapter gear 220 can also rotate together.

[0080] Furthermore, the pinion 300 is inserted into at least one of the pinion guide hole 242 and the auxiliary guide hole 282 formed in the brake ring 240 (described later), and can be aligned in position within the rotating module 200. Additionally, the pinion guide portion 241 and the auxiliary guide portion 281 prevent the pinion 300 from wobbling during rotation, thereby preventing interference and friction between gears and minimizing noise and vibration. This pinion 300 will be described in detail below.

[0081] The drive module 100 may include a motor 110, a gearbox 120, and a pinion 300.

[0082] The motor 110 is powered by the vehicle's battery, and passengers can adjust its opening / closing and rotation direction by operating a separate switch located on the seat.

[0083] Motor 110 is powered to generate rotational force, and the rotational force of motor 110 can be output through pinion 300. That is, the rotating shaft (not shown) of motor 110 is connected to pinion 300, and when motor 110 is driven, pinion 300 can rotate to output rotational force.

[0084] The gearbox 120 houses the motor 110 and contains at least a portion of the motor 110 and gears (not shown).

[0085] At least a portion of the pinion 300 is disposed inside the gearbox 120, and another portion protrudes from the outside of the gearbox 120 and is connected to the rotating module 200.

[0086] The reduction mechanism can be located inside the gearbox 120 to increase the output of the motor 110.

[0087] Furthermore, the rotation axis of the pinion 300 can be arranged parallel to the rotation axis of the rotation module 200, and can move along the rotation axis of the rotation module 200 to connect with the rotation module 200.

[0088] On one hand, the pinion 300 may include a pinion body 310, an adapter 320 and a pinion end 330, and transmits rotational force from the motor 110.

[0089] refer to Figure 9 The pinion body 310 can be fixed to the drive module 100, specifically, fixed to the pinion and rotating together with the pinion. The pinion body 310 can be coaxially arranged with the rotation axis of the pinion and can be provided with a groove, in which at least a portion of the pinion is inserted and fixed. Furthermore, the pinion body 310 can be inserted into the gearbox 120 and fixed to the pinion. Additionally, the pinion body 310 can be located below the pinion 300, and the adapter 320 can be located above the pinion body 310.

[0090] The adapter 320 is configured to connect to the rotating component of the rotating module 200. Specifically, the adapter 320 is inserted into and fixed in the insertion hole 221 of the adapter gear 220, which will be described later. The adapter 320 may be formed in a cylindrical shape, and its rotation axis may be arranged coaxially with the rotation axis of the pinion and the adapter gear 220.

[0091] In addition, the adapter 320 may have a plurality of adapter grooves 321 formed by recesses in a portion of the outer peripheral surface, and the plurality of adapter grooves 321 may be arranged at equal intervals along the circumferential direction.

[0092] An adapter protrusion 222 disposed in an insertion hole 221 of the adapter gear 220 is inserted into at least a portion of a plurality of adapter recesses 321. Furthermore, the adapter recesses 321 are formed with openings on the upper and lower sides, such that the adapter protrusion 222 is inserted through the lower opening and the adapter protrusion 222 can engage.

[0093] The pinion 300 may have a pinion end 330 on the upper side of the adapter 320. The pinion end 330 is inserted into and supported in the pinion guide hole 242 formed in the brake ring 240. With this structure, the pinion 300 can be axially aligned during rotation without wobbling, and interference between the adapter gear 220 and the clutch 250 is prevented.

[0094] In addition, the pinion end 330 can pass through the pinion guide hole 242 and be inserted into the auxiliary guide hole 282 formed in the cover plate 280.

[0095] When the pinion body 310 is fixed to the drive module 100 and the drive module 100 is connected to the rotation module 200, the pinion 300 passes through the pinion through hole 213 in the housing 210, the adapter 320 is disposed inside the adapter gear 220, and the pinion end 330 passes through the wheel cover 230 and is inserted into the pinion guide hole 242. Alternatively, the pinion end 330 can also be inserted into the auxiliary guide hole 282.

[0096] On the one hand, refer to Figures 5 to 7 The following will describe the housing 210, adapter gear 220, wheel cover 230, brake ring 240, clutch 250, brake wedge 260, brake roller 270 and cover plate 280 of the rotating module 200.

[0097] The housing 210 may be shaped to accommodate at least a portion of the clutch 250 and the adapter gear 220 therein. Specifically, the portion of the housing 210 that accommodates the adapter gear 220 is engaged with the wheel cover 230, and the adapter gear 220 may be rotatably accommodated in the space between the housing 210 and the wheel cover 230.

[0098] That is, the housing 210 has a clutch receiving portion 211, in which at least a portion of the clutch 250 is located, and a gear receiving portion 212, in which the adapter gear 220 is located and can be engaged with the wheel cover 230.

[0099] The clutch receiving portion 211 provides a hollow circular space for mounting the gear portion 252 of the clutch 250, and a through hole can be formed in the middle.

[0100] The gear receiving portion 212 provides a cylindrical space for accommodating the adapter gear 220, and forms a pinion through hole 213 in the middle through which the pinion 300 can pass, and can be combined with the wheel cover 230 to support the adapter gear 220 disposed therein. At this time, a slit may be provided on the wheel cover 230 for the pinion end 330 of the pinion 300 (described later) to pass through.

[0101] The housing 210 can be shaped to accommodate the clutch 250, brake wedge 260, and brake roller 270. The clutch 250, brake wedge 260, and brake roller 270 are rotatably disposed inside the housing 210.

[0102] The housing 210 can be formed as an opening on one side (upper side) of the axial direction, and a flange protruding radially outward is formed on the outer peripheral surface of the opening side. Multiple holes are formed on the flange, and the fastening member 201 can be fastened into the holes.

[0103] Brake ring 240 and cover plate 280 can be coupled to housing 210. Specifically, housing 210 can be fixedly coupled to brake ring 240 and cover plate 280 by fastening member 201, such as a fastener. Furthermore, hooks are formed on the flange of housing 210 and can be hooked onto cover plate 280. Adapter gear 220, wheel cover 230, clutch 250, brake wedge 260, and brake roller 270 can be accommodated in the space formed by the coupling of housing 210, brake ring 240, and cover plate 280.

[0104] The adapter gear 220 can transmit the rotational force of the motor 110 to the clutch 250. The adapter gear 220 can mesh with the clutch 250. At this time, the adapter gear 220 only meshes with the clutch 250, which can reduce the assembly dispersion between the adapter gear 220 and the clutch 250 and facilitate dimensional management.

[0105] The adapter gear 220 can be formed as a circular block with a predetermined thickness, and gear teeth are formed on its outer peripheral surface.

[0106] The adapter gear 220 is connected to the pinion 300 and can accept the rotational force from the motor 110 and rotate together with the pinion 300.

[0107] The adapter gear 220 has a shape that engages with the pinion 300 of the motor 110. Specifically, the adapter gear 220 has an insertion hole 221 in the middle, into which the pinion 300 is inserted and engaged.

[0108] In addition, the adapter gear 220 has at least one adapter protrusion 222 in the insertion hole 221, to which the pinion 300 can engage.

[0109] With this structure, the pinion 300 of the motor 110 meshes with the adapter gear 220, directly transmitting the output of the motor 110, thereby reducing operating losses and minimizing operating friction noise.

[0110] refer to Figure 10 and Figure 11 When the adapter protrusion 222 is inserted into at least a portion of the plurality of adapter recesses 321, the adapter gear 220 engages with the pinion 300. Then, when an external force is input through the seat or a large load is generated, the adapter gear 220 and the pinion 300 idle to prevent the external force or large load from being transmitted to the rotating module 200 or the drive module 100 side. That is, when an external force or large load is applied, the adapter protrusion 222 temporarily separates from the adapter recesses 321, moves along the outer peripheral surface of the adapter 320, and then inserts into an adjacent adapter recess 321. The idle between the adapter gear 220 and the pinion 300 prevents the transmission of external force or large load.

[0111] In this design, the number of adapter protrusions 222 in the adapter gear 220 is less than the number of adapter grooves 321 in the pinion 300. Therefore, when an external force or a large load is applied to the drive device 10, slippage occurs between the adapter gear 220 and the pinion 300. This slippage means that no rotational force is transmitted between them. Therefore, when the adapter gear 220 rotates due to an external force or a large load, this rotational force is prevented from being transmitted to the motor 110 through the pinion 300, thus preventing damage to the motor 110.

[0112] This could mean that only the adapter gear 220 rotates or only the pinion 300 rotates. In addition, at this time, the pinion end 330 of the pinion 300 is inserted into the pinion guide hole 242 of the brake ring 240, so that when it slides with the adapter gear 220, the pinion 300 can remain parallel to the rotation axis of the clutch 250.

[0113] Wheel cover 230 can be combined with housing 210 to rotatably accommodate adapter gear 220 inside it.

[0114] The wheel cover 230 can be inserted into and engaged within the internal space of the housing 210. The wheel cover 230 can be shaped to correspond to the adapter gear 220. Therefore, the adapter gear 220 can be stably accommodated in the space between the wheel cover 230 and the housing 210, and can rotate stably.

[0115] The brake ring 240 is coupled to the housing 210, and its inner circumferential surface is formed as a circular surface. The brake ring 240 can be fixedly coupled to the housing 210. The flange of the housing 210 can be formed with the same shape as the brake ring 240.

[0116] Brake ring 240 may be arranged around clutch 250 and brake wedge 260. Brake roller 270 may be arranged between brake ring 240 and brake wedge 260. That is, clutch 250, brake wedge 260 and brake ring 240 may be arranged inside brake ring 240.

[0117] Furthermore, the brake ring 240 may have a pinion guide 241 that supports the pinion 300. The pinion guide 241 guides the assembly position of the pinion 300 and supports the pinion 300 to prevent misalignment of the pinion 300 during motor drive. As an example, the pinion guide 241 may have a pinion guide hole 242 into which the pinion end 330 of the pinion 300 is inserted.

[0118] With this structure, misalignment of the pinion 300 can be prevented, thereby preventing misalignment of the adapter gear 220 that rotates with the pinion 300, and preventing interference between the gear teeth of the adapter gear 220 and the gear teeth 252a of the clutch 250, so as to stably transmit the rotational force of the motor 110.

[0119] The clutch 250 can be rotated by receiving rotational force from the motor 110. Specifically, the clutch 250 can be formed as a hollow circular block. One side of the clutch 250 engages with the adapter gear 220, and the other side transmits rotational force to the brake wedge 260.

[0120] In this invention, the clutch 250 may be composed of an unlocking part 251 and a gear part 252. Furthermore, the unlocking part 251 and the gear part 252 may be formed of different materials and then combined to form the clutch 250.

[0121] refer to Figure 8 As an example, the unlocking part 251 and the gear part 252 can be configured as annular, and their respective pressing grooves 251d and pressing protrusions 252b can be engaged by insertion.

[0122] The gear portion 252 has a structure that meshes with the adapter gear 220, and can be formed of a metal material such as steel with relatively high strength. The gear portion 252 has gear teeth 252a formed on its outer peripheral surface that mesh with the adapter gear 220, and a plurality of inwardly protruding pressing protrusions 252b formed on its inner peripheral surface, the plurality of pressing protrusions 252b being equally spaced in the circumferential direction.

[0123] The unlocking part 251 has a structure that transmits rotational force to the brake wedge 260, and can be formed of a relatively low-strength plastic or resin material. Therefore, when rotational force is transmitted to the brake wedge 260 and the brake roller 270, the unlocking part 251 can absorb vibration and noise, and the rotation axis of the brake wedge 260 can move and smoothly transmit rotational force to the brake wedge 260.

[0124] As an example, the unlocking part 251 has a connecting part 251c that protrudes axially from one side and inserts into the inside of the gear part 252, and a plurality of unlocking protrusions 251a that protrude axially from the other side to unlock the brake roller 270 in a locked state.

[0125] The outer peripheral surface of the connecting portion 251c is tightly engaged with the inner peripheral surface of the gear portion 252, and has a portion of the outer peripheral surface recessed into a shape corresponding to the pressing protrusion 252b, forming a pressing groove 251d, which has multiple pressing grooves 251d along the circumferential direction. In addition, the connecting portion 251c may have multiple deformable protrusions 251e, a portion of which protrudes from the outer peripheral surface and is evenly spaced in the circumferential direction.

[0126] With this structure, when the unlocking part 251 and the gear part 252 are engaged, the deformable protrusion 251e is pressed against the inner circumferential surface of the gear part 252 and deformed, and the pressed-in protrusion 252b is deformed and inserted into the pressing groove 251d, so that the unlocking part 251 can be pressed in and engaged with the gear part 252.

[0127] The unlocking protrusions 251a are formed circumferentially from the other side of the unlocking part 251 and are relatively long, and multiple protrusions can be provided at equal intervals in the circumferential direction. Guide protrusions 262, a pair of brake rollers 270 and a pair of elastic members 271 (described later) are provided between them.

[0128] The two ends of the unlocking protrusion 251a in the circumferential direction are arranged opposite to the brake roller 270. When the motor 110 is driven, the unlocking protrusion 251a contacts the brake roller 270 and can apply pressure to the brake roller 270.

[0129] The unlocking protrusion 251a may have protrusions 251b extending from both ends. When the clutch 250 rotates, the protrusions 251b first contact the brake roller 270 and separate the brake roller 270 from the inner circumferential surface of the brake ring 240. Specifically, the protrusions 251b extend from the pressure surface of the brake roller 270 and are configured to apply pressure to the brake roller 270 in the circumferential direction and radially inward.

[0130] See Figure 13When the clutch 250 rotates, the movement direction a1 of the unlocking protrusion 251a is the rotation direction of the clutch 250, and the direction a2 of the protrusion 251b supporting the brake roller 270 is radially inward than the movement direction a1 of the unlocking protrusion 251a. That is, the point b where the protrusion 251b applies pressure to the brake roller 270 is not located on the end face of the unlocking protrusion 251a in the circumferential direction, but on the inner side of the protrusion 251b in the radial direction.

[0131] Thus, the protrusion 251b is formed to press the brake roller 270 radially inward when the clutch 250 rotates, thereby reliably separating it from the brake ring 240 and stably releasing the restraining state of the brake wedge 260.

[0132] The brake wedge 260 can be disposed radially inside the brake ring 240 and axially between the clutch 250 and the cover plate 280.

[0133] The brake wedge 260 is formed as an annular ring, and a wedge surface 261 and a guide protrusion 262 are formed on its outer peripheral surface.

[0134] Multiple wedge surfaces 261 are formed on the outer peripheral surface of the brake wedge 260. Each wedge surface 261 can form a wedge-shaped space between the inner peripheral surfaces of the brake ring 240.

[0135] The wedge surface 261 is composed of a pair of inclined surfaces, forming a wedge-shaped space on both sides of the rotation direction. Each inclined surface has a brake roller 270, so that the brake wedge 260 cannot rotate on either side of the rotation direction.

[0136] For example, the wedge 261 can be formed by two inclined planes 261a and 261b, the central part of which is higher and the height decreases from the center to both sides.

[0137] A brake roller 270 is provided on each inclined plane 261a, 261b. When the brake roller 270 moves upward along the inclined plane 261a, 261b (to the center part of the wedge surface 261), the brake roller 270 is clamped between the brake wedge 260 and the brake ring 240, so that the brake wedge 260 is restricted relative to the brake ring 240 in two rotational directions. When the brake roller 270 moves downward along the inclined plane 261a, 261b, the clamping state is released, and the brake wedge 260 can rotate freely.

[0138] On one hand, the brake wedge 260 may have a plurality of guide protrusions 262 that radiate outwards on its outer peripheral surface. The number of guide protrusions 262 is the same as the unlocking protrusions 251a formed on the clutch 250, and is half the number of brake rollers 270.

[0139] Multiple guide protrusions 262 have the same radial length from the center of the brake wedge 260 and are formed at the same spacing along the outer circumferential surface of the brake wedge 260. The radially outer end faces of the guide protrusions 262 can be formed into an arc shape with the same curvature as the inner circumferential surface of the brake ring 240. Therefore, the brake wedge 260 can slide and rotate stably while in contact with the inner circumferential surface of the brake ring 240.

[0140] At this time, the brake wedge 260 is radially movably disposed in the space between the spacer 290 and the clutch 250. That is, the rotation axis of the brake wedge 260 is configured to be movable and not restricted to any one position. The rotation axis of the brake wedge 260 may not coincide with the central axis of the clutch 250 and can move according to the rotation state. As an example, when a gap is formed between the brake wedge 260 and the inner circumferential surface of the brake ring 240 or when the guide protrusion 262 deforms, the brake wedge 260 can move horizontally from the inside of the brake ring 240.

[0141] Therefore, the brake wedge 260 does not require a guide for aligning the rotating shaft with the center shaft of the clutch 250, and can also reduce power loss caused by friction, thereby improving the feel of operation.

[0142] With this structure, when the drive module 100 is driven, the rotating frame 30 rotates above the fixed frame 20 around the rotation axis, but the rotation axis of the rotating frame 30 can be movable.

[0143] On the one hand, in the assembled state, the unlocking protrusion 251a of the clutch 250 and a pair of brake rollers 270 are located between the guide protrusion 262.

[0144] A mounting groove 262a is formed on both radial sides of the guide protrusion 262, and the elastic member 271 can be inserted into and placed in the mounting groove 262a. In the non-compressed state, a part of the main body of the elastic member 271 protrudes outside the mounting groove 262a, and the brake roller 270 can be supported in contact with the mounting groove 262a.

[0145] On one hand, the brake wedge 260 may have an output member 263. The output member 263 may be combined with the rotating frame 30 to transmit the rotational force of the brake wedge 260.

[0146] With this structure, the rotation of the brake wedge 260 can cause the rotating frame 30 and the seat's buffer frame to rotate via the output member 263.

[0147] The brake roller 270 is disposed between the wedge surface 261 of the brake wedge 260 and the inner circumferential surface of the brake ring 240.

[0148] Brake rollers 270 are arranged in pairs on each wedge surface 261. That is, one brake roller 270 is provided on each inclined surface of the wedge surface 261. In addition, unlocking protrusions 251a are provided between the pairs of brake rollers 270.

[0149] The elastic member 271 presses the brake roller 270 along the wedge gap direction, causing the brake roller 270 to be clamped in the wedge gap, thereby restricting the rotation of the brake wedge 260 relative to the brake ring 240.

[0150] The material of the elastic member 271 can be an elastomer of plastic that is elastic and has excellent processability, such as rubber.

[0151] After the brake roller 270 and the elastic member 271 are installed, the cover plate 280 is mounted to the flange of the housing 210 by means of connecting members such as screws. The cover plate 280 may be formed as a generally circular flat plate, the outer peripheral surface of which has a shape corresponding to the flange of the housing 210.

[0152] The cover plate 280 is combined with the housing 210 and can accommodate the adapter gear 220, wheel cover 230, clutch 250, brake wedge 260 and brake roller 270 inside it.

[0153] A hole can be formed in the center of the cover plate 280. The output member 263 can be exposed through the hole formed in the center of the cover plate 280. The exposed output member 263 can then be combined with the rotating frame 30 to transmit the rotational force of the brake wedge 260. The rotating frame 30 is combined with the rotating frame of the cushioning frame on which the seat is mounted.

[0154] This cover plate 280 may have an auxiliary guide portion 281 to prevent misalignment of the pinion 300. The auxiliary guide portion 281 may protrude from one side of the outer peripheral surface of the cover plate 280 and may have an auxiliary guide hole 282 formed at a position corresponding to the pinion guide hole 242. A portion of the pinion end 330 of the pinion 300 may be inserted into the auxiliary guide hole 282 and support one side of the pinion 300 to support the position of the pinion 300.

[0155] With this structure, the pinion 300 passes through the pinion through hole 213 of the housing 210 to connect the adapter 320 to the adapter gear 220, and the pinion end 330 is inserted into and supported in the pinion guide hole 242 and the auxiliary guide hole 282 through the wheel cover 230.

[0156] On the one hand, a spacer 290 can also be provided between the brake wedge 260 and the cover plate 280. The spacer 290 can cover the brake wedge 260 to prevent damage between the cover plate 280 and the brake wedge 260.

[0157] The effects of the drive mechanism of the electric rotating seat according to the present invention will now be described.

[0158] Normally, the brake roller 270 is pushed into the wedge-shaped space by the elastic member 271, and the brake roller 270 is clamped between the wedge surface 261 of the brake wedge 260 and the inner circumferential surface of the brake ring 240, so that the brake wedge 260 is in a non-rotatable locked state relative to the brake ring 240. Since the brake ring 240 is fixed to the housing 210, the brake wedge 260 is also fixed.

[0159] Since the brake roller 270 restricts the brake wedge 260 on the inclined surfaces 261a and 261b on both sides of the wedge surface 261, the brake wedge 260 is restricted in rotation in both rotational directions.

[0160] Furthermore, as described above, since the brake roller 270 is tightly clamped between the brake ring 240 and the brake wedge 260 and restricts the rotation of the brake wedge 260, the brake wedge 260 cannot move in the rotational direction.

[0161] Furthermore, the rotating frame 30, which is combined with the brake wedge 260, is also restricted to a non-rotatable state, thereby reliably preventing the seat from moving in the direction of rotation.

[0162] On one hand, when the driver operates the switch to start the motor 110, the pinion 300 rotates, and the adapter gear 220 fixed thereon also rotates. Furthermore, the clutch 250, which meshes with the adapter gear 220, also rotates. At this time, the pinion 300 does not mesh with the adapter gear 220, but is inserted into and fixed in the insertion hole 221 formed in the adapter gear 220. This prevents power loss caused by gear engagement and provides an adapter structure between the adapter gear 220 and the pinion 300.

[0163] On one hand, as the clutch 250 rotates, the unlocking protrusion 251a contacts the brake roller 270 on one side and pushes the brake roller 270.

[0164] Therefore, the brake roller 270, which is moved by the unlocking protrusion 251a, moves in the opposite direction to the wedge space (the lower part of the inclined surface 261b), and a gap is generated between the brake roller 270 and the wedge surface 261, and the restricted state of the brake wedge 260 is released.

[0165] At this time, the brake roller 270, which is moved by the unlocking protrusion 251a, moves and contacts the guide protrusion 262 while compressing the elastic member 271. That is, when the unlocking protrusion 251a, the brake roller 270, and the guide protrusion 262 are in close contact with each other, the unlocking protrusion 251a continues to push the brake roller 270 and the guide protrusion 262 as the clutch 250 rotates, so that the brake wedge 260 can continue to rotate.

[0166] At this time, the brake roller 270, which is not directly moved by the unlocking protrusion 251a, moves in the opposite direction to the wedge gap (the lower part of the inclined surface 261a) due to the rotation of the brake wedge 260, thereby releasing the restriction state. Therefore, the rotation of the brake wedge 260 becomes uncontrollable. Thus, as described above, the brake wedge 260 can rotate.

[0167] As described above, when the brake wedge 260 rotates, the rotating frame 30 of the seat rotating device, which is coupled to the output member 263, rotates, thereby rotating the seat in the direction selected by the passenger.

[0168] After the seat rotates in the desired direction, if the passenger stops the switch operation, the power supply to the motor 110 is interrupted, thereby stopping the rotation of the clutch 250.

[0169] Therefore, since the unlocking protrusion 251a no longer pushes the brake roller 270, the brake roller 270 returns to its original position under the restoring force of the elastic member 271, so the brake wedge 260 is once again restricted by the brake ring 240 and cannot rotate in both directions, thus the seat is also fixed.

[0170] The present invention has been described in detail above with reference to specific embodiments. However, this is only for the purpose of illustrating the present invention. The present invention is not limited thereto. Those skilled in the art can make changes or improvements to the present invention within the technical concept of the present invention.

[0171] Any simple changes or modifications to this invention fall within the scope of this invention, and the specific scope of protection of this invention will be clearly defined by the appended claims.

Claims

1. A drive device for an electrically rotating seat, characterized in that, include: The housing is mounted on the side of the base plate and is engaged with the brake ring; The pinion is connected to the rotating shaft of the motor and receives rotational force when the motor is driven. The adapter gear engages with the pinion and rotates together with it; The clutch is rotatably disposed inside the brake ring and engages with the adapter gear; A brake wedge is rotatably disposed inside the brake ring and rotated via the clutch; Multiple brake rollers are disposed between the brake wedge and the brake ring to limit or release the rotation of the brake wedge relative to the brake ring; The cover plate is coupled to the housing via the brake ring; and A spacer, disposed between the cover plate and the brake wedge, is used to support the brake wedge toward the clutch side. The brake wedge is radially movably disposed between the spacer and the clutch.

2. The drive device for the electric rotating seat according to claim 1, characterized in that, Also includes: A fixed frame is fixed to the housing and the base plate; as well as The rotating frame is fixed to the brake wedge and the seat. The rotating frame is rotatably mounted on the upper part of the fixed frame, and the rotating shaft is movably mounted.

3. The drive device for the electric rotating seat according to claim 1, characterized in that, The brake ring has a pinion guide hole for inserting the end of the pinion.

4. The drive device for the electric rotating seat according to claim 1, characterized in that, The clutch has at least one unlocking protrusion that protrudes from one surface of the clutch and applies pressure to the brake roller in a circumferential direction during rotation. The unlocking protrusion has a protrusion that extends from the surface that presses against the brake roller, the protrusion pressing against the brake roller in the circumferential direction and inwardly in the radial direction.

5. A drive device for an electrically rotating seat, characterized in that, include: Drive module, including motor; as well as The rotating module is located between the base plate and the seat. The rotation module includes: The housing is mounted on the side of the base plate and is engaged with the brake ring; The clutch is rotatably disposed inside the brake ring; The adapter gear rotates via the drive module and engages with the clutch to rotate the clutch; A brake wedge, rotatably disposed inside the brake ring and rotated via the clutch; and Multiple brake rollers are disposed between the brake wedge and the brake ring to limit or release the rotation of the brake wedge relative to the brake ring. The drive module includes a pinion gear connected to the rotating shaft of the motor. When the motor is driven, the pinion gear receives rotational force and transmits the rotational force to the rotation module. The pinion is fixed to the adapter gear, and at least a portion of it is inserted into the pinion guide hole formed on the brake ring.

6. The drive device for the electric rotating seat according to claim 5, characterized in that, The adapter gear has an insertion hole formed for inserting the pinion. The pinion has an adapter that is inserted into the insertion hole, and a plurality of adapter grooves are formed on its outer circumferential surface at equal intervals along the circumferential direction. The adapter gear also has an adapter protrusion that protrudes from the inner peripheral surface of the insertion hole so as to be inserted into any one of the plurality of adapter recesses.

7. The drive device for the electric rotating seat according to claim 5, characterized in that, The pinion includes: The small gear body is fixed on the drive module; An adapter, passing through the housing and connected to the adapter gear; and The end of the pinion is inserted into the pinion guide hole.

Images