Inertia brake and braking method using it

Abstract

The present invention relates to an inertia brake that physically brakes a rotating body by utilizing its acceleration and simultaneously stops the rotating body by disengaging the connection between the input body and the rotating body, and a braking method using the same. The water purifier according to the present invention, the inertia brake and the braking method using the same, comprises an input body and a rotating body that rotate on an axis, an inertia motion part that moves in the left and right directions, a clutch part, and a brake part.

Description

Technology Field

[0001] The present invention relates to an inertia brake and a braking method using the same, and more specifically, to an inertia brake that physically brakes by utilizing the acceleration of a rotating body and simultaneously stops the rotating body by releasing the connection between an input body and the rotating body, and a braking method using the same. Background Technology

[0002] In vehicles or mechanical devices equipped with rotating bodies, a phenomenon known as sudden acceleration may occur, in which the drivetrain suddenly generates high rotational speeds regardless of the driver's intention. Such sudden acceleration can be caused by various factors, including accelerator pedal malfunction, sensor signal errors, or control unit program abnormalities; as the rotating body accelerates rapidly in an instant, there is a risk of causing serious accidents such as delayed braking, collisions, or equipment damage.

[0003] Conventionally, technologies have been proposed to prevent sudden acceleration by detecting the rotational speed of a rotating body in real time and determining it as sudden acceleration if it exceeds a threshold, thereby cutting off engine output or activating the brakes. For example, a method that monitors the output of a rotational speed sensor and recognizes it as sudden acceleration if the rotational speed rises rapidly within a certain period is commonly used.

[0004] However, this speed-based judgment method makes it difficult to distinguish between normal acceleration and sudden acceleration because rotational speed can change temporarily even under normal driving conditions. Additionally, response delays or signal noise in the rotational speed sensor may cause the timing of sudden acceleration detection to be delayed or lead to misjudgment.

[0005] As such, conventional speed detection-based sudden acceleration detection technology fails to completely resolve issues of malfunction or detection delay, and consequently has limitations in that it is difficult to sufficiently guarantee driver safety. Therefore, there is a need for a sudden acceleration braking device and its control technology capable of detecting sudden acceleration of a rotating body more quickly and accurately to appropriately control braking force. The problem to be solved

[0006] The objective of the present invention is to provide an inertia brake that brakes a rotating body using an inertia device that moves based on acceleration.

[0007] Another objective of the present invention is to provide an inertia brake that disconnects the connection between an input body and an output body to prevent rotation from being transmitted.

[0008] Another objective of the present invention is to provide an inertia brake that simultaneously disconnects the input body and the output body and physically pressurizes the output body to brake it.

[0009] Another objective of the present invention is to provide an inertia brake that maintains the state in which the connection between the input body and the output body is disconnected based on centrifugal force until the input body comes to a stop. means of solving the problem

[0010] An inertia brake according to one aspect of the present invention comprises an input body that rotates axially when rotational torque is applied from the outside, a rotating body connected to the input body and capable of rotating together, an inertia motion part capable of moving in left and right directions according to the rotation of the rotating body, a clutch part that selectively blocks the rotational torque transmitted to the rotating body, and a brake part that brakes the rotating body, wherein the clutch part is arranged to form a pair on both sides and the inertia motion part is arranged between the pair of clutch parts, and the inertia motion part, the clutch part, and the brake part are arranged inside the rotating body, and the clutch part and the brake part can operate when the rotating body rotates above a predetermined acceleration.

[0011] In one aspect of the present invention, an inertia brake may have a plurality of brake parts spaced apart from each other by a predetermined distance.

[0012] An inertia brake according to one aspect of the present invention comprises a third output body positioned to contact the upper end of the input body, a second output body coupled to the upper end of the third output body, and a first output body coupled to the upper end of the second output body, wherein the first output body, the second output body, and the third output body are bolted together and can rotate together.

[0013] An inertia brake according to one aspect of the present invention may include an inertia body capable of moving in the left and right directions having a predetermined mass, an inertia spring coupled to both sides of the inertia body, and a slider coupled to both ends of the inertia body and capable of sliding in the left and right directions.

[0014] An inertia brake according to one aspect of the present invention comprises, wherein the clutch portion includes a clutch pin having one end coupled to the lower end of the first output body and the other end detachably coupled to the input body, and the clutch pin may have a shape extending in a vertical direction to penetrate the second output body and the third output body.

[0015] An inertia brake according to one aspect of the present invention comprises a brake drum that surrounds and is coupled to the outer surface of the rotating body and rotates together with the rotating body, and the brake portion may include a brake fixing member coupled to the upper part of the third output body and coupled to a pair of brake pins having a shape extending radially at both ends, and a brake pad coupled to the radially ends of the brake pins.

[0016] An inertia brake according to one aspect of the present invention can have the slider slide to press the clutch pin in a vertical direction while simultaneously pressing the brake pin in a radial direction.

[0017] In an inertia brake according to one aspect of the present invention, the brake pin and the brake pad are pressed by the slider and move in the radial direction, and the brake pad can brake by pressing the inner wall of the brake drum.

[0018] An inertia brake according to one aspect of the present invention comprises, wherein the input body includes a clutch hole into which the clutch pin can be inserted, the other side of the clutch pin has a shape that is cut at an angle, and the clutch hole may be formed to correspond to the shape of the other side of the clutch pin.

[0019] An inertia brake according to one aspect of the present invention may include, wherein the slider comprises: a clutch contact surface formed on the outer surface of the slider to correspond to the shape of the clutch pin; and a brake contact surface formed to correspond to the shape of the brake pin.

[0020] In an inertia brake according to one aspect of the present invention, the clutch pin can be pressed by the slider and moved in the vertical direction to be disengaged from the clutch hole.

[0021] In one aspect of the present invention, an inertia brake may include an input body that can move in the radial direction by centrifugal force.

[0022] A braking method for an inertia brake according to one aspect of the present invention may include an inertia motion step in which the inertia motion part moves in the left and right directions when the rotating body rotates, and a braking step of releasing the coupling between the input body and the rotating body and stopping the rotation of the rotating body.

[0023] A braking method of an inertia brake according to one aspect of the present invention, wherein the braking step comprises the slider simultaneously pressing and moving the clutch pin and the brake pin, the clutch pin moving in a vertical direction to detach from the input body, and the brake pin moving in a radial direction so that the brake pad presses against the inner wall of the brake drum.

[0024] A braking method for an inertia brake according to one aspect of the present invention may further include a blocking step in which a centrifugal pin, which is movable in the radial direction by centrifugal force, covers a clutch hole in which the clutch pin and the input body are detachably coupled.

[0025] A braking method for an inertia brake according to one aspect of the present invention may further include a reconnection step in which the rotation of the input body is stopped and the input body is rotated so that the clutch pin engages with the clutch hole. Effects of the invention

[0026] An inertia brake according to one embodiment of the present invention can brake a rotating body using an inertia device that moves based on acceleration.

[0027] In addition, an inertia brake according to one embodiment of the present invention can disconnect the connection between the input body and the output body to prevent rotation from being transmitted.

[0028] In addition, an inertia brake according to one embodiment of the present invention can brake by physically pressing the output body while simultaneously disconnecting the connection between the input body and the output body.

[0029] In addition, an inertia brake according to one embodiment of the present invention can maintain a state in which the connection between the input body and the output body is disconnected based on centrifugal force until the input body stops. Brief explanation of the drawing

[0030] FIG. 1 is a perspective view of an inertia brake according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of an inertia brake according to one embodiment of the present invention. FIG. 3 is an exploded perspective view of a rotating body, brake part, clutch part, and inertial motion part of an inertial brake according to one embodiment of the present invention. FIG. 4 is a perspective view of an inertia motion part, a clutch part, and a brake part of an inertia brake according to an embodiment of the present invention. FIG. 5 is a perspective view of the inertial motion part of an inertial brake according to one embodiment of the present invention. FIG. 6 is a perspective view of a slider of an inertia brake according to one embodiment of the present invention. FIG. 7 is a diagram showing the coupling relationship between the brake part and the inertial motion part of an inertial brake according to one embodiment of the present invention. FIG. 8 is a top view of the brake section of an inertia brake according to one embodiment of the present invention. FIG. 9 is a drawing showing the movement of the brake part of an inertia brake according to one embodiment of the present invention. FIG. 10 is a diagram showing the coupling relationship between the clutch part and the inertial motion part of an inertial brake according to one embodiment of the present invention. FIG. 11 is a perspective view of the clutch portion of an inertia brake according to one embodiment of the present invention. FIG. 12 is a top view of the input body of an inertia brake according to one embodiment of the present invention. FIG. 13 is a drawing showing the input body and clutch pin of an inertia brake combined according to one embodiment of the present invention. FIG. 14 is a cross-section of an input body of an inertia brake according to one embodiment of the present invention. FIG. 15 is a diagram showing the inertial motion part of an inertial brake according to one embodiment of the present invention pressing the clutch pin. FIG. 16 is a diagram showing the positional relationship between a clutch pin and a brake pin according to an embodiment of the present invention. FIG. 17 is a drawing showing the centrifugal pin of an inertia brake moving in the radial direction according to one embodiment of the present invention. FIG. 18 is a flowchart of a braking method for an inertia brake according to an embodiment of the present invention. Specific details for implementing the invention

[0031] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0032] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this invention, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that in the accompanying drawings, identical components are indicated by the same reference numerals whenever possible. Furthermore, detailed descriptions of known functions and configurations that may obscure the essence of the present invention will be omitted. For the same reason, some components in the accompanying drawings may be exaggerated, omitted, or schematically depicted.

[0035] Hereinafter, an inertia brake according to the first embodiment of the present invention will be described.

[0036] FIG. 1 is a perspective view of an inertia brake according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of an inertia brake according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of a rotating body, a brake part, a clutch part, and an inertia motion part of an inertia brake according to an embodiment of the present invention. FIG. 4 is a perspective view of an inertia motion part, a clutch part, and a brake part of an inertia brake according to an embodiment of the present invention.

[0037] Referring to FIGS. 1 to 4, an inertia brake (100) according to the first embodiment of the present invention may include a rotating body (1000), an input body (3000), an inertia motion unit (5000), a clutch unit (7000), a brake drum (2000), and a brake unit (9000). According to the present embodiment, as the inertia motion unit (5000) moves, the clutch unit (7000) blocks the rotational torque transmitted to the rotating body (1000), and at the same time, the rotation of the rotating body (1000) can be stopped by the brake unit (9000).

[0038] The input body (3000) can rotate on its axis by applying rotational torque from the outside. For example, it is coupled with a motor shaft, pedal shaft, or reduction gear input shaft to receive rotational force.

[0039] Referring to FIG. 2, the rotating body (1000) may include a first output body (1100), a second output body (1300), and a third output body (1500). The third output body (1500) may be positioned to make simple contact with the upper surface of the input body (3000). The second output body (1300) is coupled to the top of the third output body (1500), and the first output body (1100) is coupled to the top of the second output body (1300). The first, second, and third output bodies (1100, 1300, 1500) may be coupled by bolts and rotate together. The rotating body (1000) may be connected to the input body (3000) and rotate together.

[0040] Referring to FIGS. 1 and 2, a brake drum (2000) can be coupled to the outer surface of a rotating body (1000). The brake drum (2000) surrounds the outer surface of the rotating body (1000) and is coupled to the rotating body (1000) to rotate together. The brake drum (2000) can be coupled and fixed to the rotating body (1000) by means of a bearing (not shown), etc.

[0041] Referring to FIG. 3, the inertia motion unit (5000), clutch unit (7000), and brake unit (9000) may be disposed inside the rotating body (1000). The second output body (1300) may be in a shape having a space in which the inertia motion unit (5000), clutch unit (7000), and brake unit (9000) can be disposed.

[0042] Referring to FIG. 4, the inertia motion unit (5000), clutch unit (7000), and brake unit (9000) may be positioned between the first output body (1100) and the third output body (1500). A pair of clutch units (7000) may be positioned on both sides of the brake unit (9000), and an inertia motion unit (5000) may be positioned between the pair of clutch units (7000).

[0043] At this time, a plurality of brake parts (9000), clutch parts (7000), and brake parts (9000) may be arranged inside the rotating body (1000). The plurality of brake parts (9000) may be arranged spaced apart from each other by a predetermined distance while forming the outer surface of the rotating body (1000). Although it is shown in FIG. 4 that five brake parts (9000) are arranged, it is not limited thereto.

[0044] FIG. 5 is a perspective view of an inertial motion part of an inertial brake according to one embodiment of the present invention. FIG. 6 is a perspective view of a slider of an inertial brake according to one embodiment of the present invention.

[0045] Referring to FIG. 5, the inertial motion part (5000) may include an inertial body (5100), an inertial spring (5300), a slider (5500), an inertial passage (5700), and a fixed rib (5900).

[0046] The inertial body (5100) has a predetermined mass and is configured to move by inertia according to a change in velocity without external force. According to the present invention, when the rotating body (1000) rotates and rotational acceleration occurs, the inertial body (5100) can move in the left-right direction (L).

[0047] The inertia body (5100) may include a central member (5110) and an extension member (5130) that is symmetrically protruded and extended on both sides relative to the central member (5110). An inertia spring (5300) may be coupled to the extension member (5130). One side of the inertia spring (5300) may be fixed to the central member (5110) of the inertia body (5100), and the other side may be fixed to a fixed rib (5900) coupled to the first and third output bodies (1100, 1500).

[0048] One side of the fixed rib (5900) is connected to the first output body (1100) and the other side is connected to the third output body (1500) to be fixed. The fixed rib (5900) may be formed symmetrically on both sides of the central member (5110). The fixed rib (5900) may include a hole through which the extension member (5130) can pass.

[0049] Accordingly, the extension member (5130) may have a shape that extends to both sides by penetrating the fixed rib (5900). That is, the extension member (5130) includes a part to which the inertia spring (5300) is attached and a part to which the inertia spring (5300) is not attached.

[0050] The inertia spring (5300) is a compression spring and can be installed on both sides of the inertia body (5100) in a preloaded state. When the inertia body (5100) moves to one side of the left / right direction (L), the inertia spring (5300) on one side is compressed. Since the acceleration required for the inertia body (5100) to move varies depending on the restoring force of the inertia spring (5300), it must be appropriately selected.

[0051] An inertia passage (5700) may be formed between the fixed ribs (5900) on both sides. An inertia body (5100) and an inertia spring (5300) may slide within the inertia passage (5700). The inertia passage (5700) may provide a space in which the inertia body (5100) and the inertia spring (5300) can be accommodated.

[0052] Referring to FIGS. 5 and 6, the inertial motion unit (5000) may include a slider (5500). The slider (5500) may be coupled to both ends of the extension member (5130) of the inertial body (5100). The slider (5500) is not mechanically coupled to the first, second, and third output bodies (1100, 1300, 1500) but is fixed so that it can slide. Thus, when the inertial body (5100) moves in the left-right direction (L), the slider (5500) can slide in the left-right direction (L).

[0053] That is, when the rotating body (1000) rotates, the inertia body (5100) moves to one side of the left-right direction (L). When the inertia body (5100) moves, the inertia spring (5300) on one side is compressed between the central member (5110) and the fixed rib (5900). As the extension member (5130) moves in the left-right direction (L), the slider (5500) coupled to the end of the extension member (5130) slides together.

[0054] Referring to FIG. 6, the slider (5500) may include a clutch contact surface (5510) and a brake contact surface (5530). As described below, when the rotating body (1000) rotates beyond a predetermined acceleration, the slider (5500) may slide to come into contact with the clutch pin (7100) and the brake pin (9100).

[0055] The clutch pin (7100) can be pressed through the clutch contact surface (5510) while the brake pin (9100) can be pressed simultaneously through the brake contact surface (5530). A detailed explanation of this will be provided later (see FIG. 16).

[0056] FIG. 7 is a diagram showing the combined relationship between the brake part and the inertial motion part of an inertial brake according to an embodiment of the present invention. FIG. 8 is a top view of the brake part of an inertial brake according to an embodiment of the present invention. FIG. 9 is a diagram showing the movement of the brake part of an inertial brake according to an embodiment of the present invention.

[0057] Referring to FIGS. 7 and 8, the brake unit (9000) may include a brake pin (9100), a brake spring (9300), a return spring (9500), a brake pad (9900), and a brake fixture (9700). The brake unit (9000) can brake the rotating body (1000) by physically creating friction with a brake drum (2000) that surrounds and connects to the outer surface of the rotating body (1000).

[0058] The brake fixing body (9700) is positioned to form the outer surface of the rotating body (1000) and can be fixed by the first, second, and third output bodies (1100, 1300, 1500). At this time, the brake fixing body (9700) can be coupled to be positioned on the upper part of the third output body (1500). A pair of brake pins (9100) and brake pads (9900) can be coupled to both ends of the brake fixing body (9700).

[0059] The brake pin (9100) may have a shape that extends in the radial direction (R). The brake pin (9100) is positioned to come into contact with the slider (5500). At this time, the surface shape of the brake pin (9100) that comes into contact with the slider (5500) may be formed to correspond to the slider (5500). As described below, the brake pin (9100) may move by receiving a force in the radial direction (R) from the slider (5500).

[0060] The brake pin (9100) can be connected to the brake fixture (9700) and the return spring (9500). The brake pin (9100) can be connected to the brake pad (9900) and the brake spring (9300). The brake spring (9300) maintains a constant compression force to ensure that the braking force acts uniformly, and the return spring (9500) allows the brake to return to its original position when the compression force is released. As the brake spring (9300) and the return spring (9500) are formed together, stability and responsiveness are improved.

[0061] A brake pad (9900) may be attached to the radial (R) end of the brake pin (9100). The brake pad (9900) may be positioned to form the outer surface of the rotating body (1000) together with the brake fixing body (9700). Thus, when the brake pin (9100) moves in the radial (R) direction, the brake pad (9900) may move in the radial (R) direction from the outer surface of the rotating body (1000).

[0062] At this time, the brake pin (9100) can be slidably coupled to the brake pad (9900) by a bush. The brake pin (9100) can move closer to the brake pad (9900) as it slides in the radial direction (R). However, a restoring force of the brake spring (9300) is generated, causing a force to move the brake pin (9100) and the brake pad (9900) away from each other. Therefore, the brake pad (9900) can generate frictional force against the inner wall of the brake drum (2000).

[0063] Referring to FIG. 9, as the inertial body (5100) and the slider (5500) move, they come into contact with the brake pin (9100). As previously described, the brake contact surface (5530) of the slider (5500) comes into contact with the brake pin (9100). The brake contact surface (5530) may be formed at an angle so that the brake pin (9100) receives a radial force (R) from the slider (5500).

[0064] That is, as the slider (5500) applies pressure, the brake pin (9100) and the brake pad (9900) can move in the radial direction (R) to press against the inner wall of the brake drum (2000). The brake pad (9900) can generate frictional force against the brake drum (2000) to brake the rotating body (1000).

[0065] FIG. 10 is a diagram showing the coupling relationship between the clutch part and the inertial motion part of an inertial brake according to one embodiment of the present invention. FIG. 11 is a perspective view of the clutch part of an inertial brake according to one embodiment of the present invention. FIG. 12 is a top view of the input body of an inertial brake according to one embodiment of the present invention.

[0066] Referring to FIGS. 10 and 11, the clutch portion (7000) includes a clutch pin (7100) and a clutch spring (7300), and the clutch pin (7100) may include a guide surface (7110), a slider contact surface (7130), and an inclined surface (7150). The clutch portion (7000) can selectively block rotational torque transmitted from the input body (3000) to the rotating body (1000).

[0067] The clutch pin (7100) may have a shape extending in the vertical direction (H). One side of the clutch pin (7100) may be coupled to the lower surface of the first output body (1100), and the other side may be detachably coupled to the input body (3000). The clutch pin (7100) may have a shape extending in the vertical direction (H) to penetrate the second output body (1300) and the third output body (1500).

[0068] The clutch pin (7100) can be coupled to the first output body (1100) and the clutch spring (7300) to enable elastic movement in the vertical direction (H). Therefore, as described below, the clutch pin (7100) can move in the vertical direction (H) by the slider (5500).

[0069] Referring to FIG. 11, the clutch pin (7100) may include a guide surface (7110), a slider contact surface (7130), and an inclined surface (7150). A plurality of guide surfaces (7110) may be formed on the clutch pin (7100). The guide surfaces (7110) may have a shape cut by a vertical direction (H) plane. The guide surfaces (7110) may prevent the clutch pin (7100) from rotating within the rotating body (1000) or the input body (3000).

[0070] The slider contact surface (7130) is the surface where the slider (5500) comes into contact with the clutch pin (7100). The slider contact surface (7130) can be formed so that the force applied by the slider (5500) is converted into a force in the vertical direction (H). Referring to FIG. 11, the slider contact surface (7130) may have a shape that is cut at an angle. However, it is not limited thereto and may have various shapes that allow the clutch pin (7100) to move in the vertical direction (H) by the slider (5500).

[0071] The clutch pin (7100) may include an inclined surface (7150) on the surface that contacts the input body (3000) while engaging with it. The inclined surface (7150) may have a shape in which the end of the clutch pin (7100) is cut at an angle. As described below, the clutch pin (7100) can be easily disengaged from the clutch hole (3100) by means of the inclined surface (7150).

[0072] Referring to FIG. 12, the input body (3000) may include a clutch hole (3100), a centrifugal pin (3300), and a centrifugal spring (3500). A clutch pin (7100) is coupled to the clutch hole (3100), and the input body (3000) and the rotating body (1000) may be connected by the clutch pin (7100). As previously discussed, since a plurality of clutch pins (7100) may be included, a plurality of corresponding clutch holes (3100) may be formed.

[0073] The centrifugal pin (3300) can be coupled to the clutch hole (3100) by a centrifugal spring (3500). The centrifugal pin (3300) is positioned closer to the center of the input body (3000) than to the clutch hole (3100). When the input body (3000) rotates, the centrifugal pin (3300) can move in the direction of the clutch hole (3100), i.e., in the radial direction (R), by centrifugal force. The centrifugal pin (3300) may have a shape corresponding to the clutch hole (3100) so that it can move in the radial direction (R) and cover the clutch hole (3100).

[0074] By the centrifugal pin (3300) covering the clutch hole (3100), the clutch pin (7100) can be prevented from being coupled to the input body (3000). A detailed explanation of this will be provided later.

[0075] FIG. 13 is a diagram showing the input body and clutch pin of an inertia brake combined according to an embodiment of the present invention. FIG. 14 is a cross-sectional view of the input body of an inertia brake according to an embodiment of the present invention.

[0076] Referring to FIG. 13, a clutch pin (7100) is inserted into and coupled with the clutch hole (3100) of the input body (3000). That is, the input body (3000) and the rotating body (1000) are connected by the clutch pin (7100). Thus, an external rotational torque applied to the input body (3000) is transmitted to the rotating body (1000) so that they can rotate together.

[0077] Referring to FIG. 14, the clutch hole (3100) is shaped to correspond to the inclined surface (7150) of the clutch pin (7100) examined earlier. Since the cross-section of the clutch hole (3100) has an inclined shape similar to the inclined surface (7150), the clutch pin (7100) can be easily disengaged from the clutch hole (3100). A detailed explanation of this will be provided later.

[0078] FIG. 15 is a diagram showing the inertial motion part of an inertial brake according to one embodiment of the present invention pressing the clutch pin.

[0079] FIG. 15 illustrates a case where the rotating body (1000) and the input body (3000) rotate counterclockwise, causing the inertial motion part (5000) to move clockwise, that is, to the right side relative to FIG. 15. Since the operating principle is the same for the opposite case, the explanation will be limited to this case.

[0080] Referring to FIG. 15, as the inertial body (5100) moves to the right according to FIG. 15, the slider (5500) presses the clutch pin (7100) upward to the right. The clutch pin (7100) can be lifted out of the clutch hole (3100) by receiving the upward force to the right through the slider contact surface (7130).

[0081] Meanwhile, when the input body (3000) is rotating counterclockwise, a leftward upward force is applied to the left clutch pin (7100) in reference to FIG. 15 by the inclined portion of the clutch hole (3100). Therefore, the left clutch pin (7100) in reference to FIG. 15 can naturally detach from the clutch hole (3100) along the inclined surface (7150). Additionally, if the input body (3000) is rotating, the centrifugal pin (3300) can move in the radial direction (R) by centrifugal force and cover the clutch hole (3100).

[0082] When the clutch pin (7100) is disengaged from the clutch hole (3100), the connection between the input body (3000) and the rotating body (1000) is released. Therefore, even if the input body (3000) is rotating, rotation is not transmitted to the rotating body (1000). That is, when rotating above a predetermined acceleration, the inertial motion part (5000) moves, causing the clutch pin (7100) to disengage, thereby selectively blocking the rotational torque.

[0083] FIG. 16 is a diagram showing the positional relationship between a clutch pin and a brake pin according to an embodiment of the present invention.

[0084] Referring to FIG. 16, the brake pin (9100) and the clutch pin (7100) are arranged so that they can be simultaneously pressed by the slider (5500). The slider (5500) can come into contact with the brake pin (9100) and the clutch pin (7100) when the rotating body (1000) rotates beyond a predetermined acceleration.

[0085] As the slider (5500) moves, the brake pin (9100) and the clutch pin (7100) are simultaneously pressed by the brake contact surface (5530) and the clutch contact surface (5510). The brake pin (9100) moves simultaneously in the radial direction (R) and the clutch pin (7100) moves simultaneously in the vertical direction (H). That is, when the rotating body (1000) rotates beyond a predetermined acceleration, the brake part (9000) and the clutch part (7000) can be operated.

[0086] Therefore, braking of the rotating body (1000) by the brake unit (9000) examined earlier and blocking of rotational torque by the clutch unit (7000) occur simultaneously. As the connection between the input body (3000) and the rotating body (1000) is released, physical braking of the rotating body (1000) also occurs simultaneously, making it effective as emergency braking against sudden acceleration.

[0087] FIG. 17 is a drawing showing the centrifugal pin of an inertia brake moving in the radial direction according to one embodiment of the present invention.

[0088] Referring to FIG. 17, when the input body (3000) rotates at a speed greater than a predetermined speed after the clutch pin (7100) is disengaged from the clutch hole (3100), the centrifugal pin (3300) may move in the radial direction (R). The centrifugal pin (3300) may move in the radial direction (R) and cover the clutch hole (3100). Conversely, when the input body (3000) rotates at a speed less than a predetermined speed, the centrifugal force weakens, and the centrifugal pin (3300) may return to its initial position.

[0089] The centrifugal pin (3300) may have a predetermined mass to receive centrifugal force when the input body (3000) rotates at a speed greater than a predetermined speed. The centrifugal pin (3300) is connected to the clutch hole (3100) and the centrifugal spring (3500). The speed at which centrifugal force is received can be set by considering the restoring force of the centrifugal spring (3500) and the mass of the centrifugal pin (3300).

[0090] The centrifugal pin (3300) covers the clutch hole (3100), thereby blocking the clutch pin (7100) from being inserted into the clutch hole (3100). Therefore, even if there is rotation caused by a malfunction of the input body (3000), it is not transmitted to the rotating body (1000), thus ensuring stability.

[0091] FIG. 18 is a flowchart of a braking method for an inertia brake according to an embodiment of the present invention.

[0092] The braking method of an inertia brake may include an inertia motion step (S1), a braking step (S2), a blocking step (S3), and a reconnection step (S4).

[0093] The inertia motion step (S1) is based on the premise that the rotating body (1000) and the input body (3000) are connected by a clutch pin (7100) and rotate together. When rotation is applied to the input body (3000), the inertia motion step (S1) is executed. As the rotating body (1000) rotates, the inertia body (5100) moves, and the slider (5500) attached to the end of the inertia body (5100) also moves together.

[0094] In the braking step (S2), the slider (5500) moves to simultaneously press the brake pin (9100) and the clutch pin (7100) through the brake contact surface (5530) and the clutch contact surface (5510). The clutch pin (7100) moves by receiving force in the vertical direction (H), and at the same time, the brake pin (9100) moves by receiving force in the radial direction (R). Accordingly, as the clutch pin (7100) is disengaged from the clutch hole (3100), the brake pad (9900) coupled to the brake pin (9100) presses against the inner wall of the brake drum (2000).

[0095] The blocking step (S3) is based on the premise that the clutch pin (7100) is disengaged from the clutch hole (3100) and the input body (3000) continues to rotate. When the input body (3000) rotates at a speed greater than a predetermined speed, the centrifugal pin (3300) moves radially (R) by centrifugal force and covers the clutch hole (3100). The state is maintained in which the clutch pin (7100) cannot be inserted into the clutch hole (3100) by the centrifugal pin (3300). That is, when the rotation of the input body (3000) continues, the rotation of the input body (3000) is blocked so that it is not transmitted to the rotating body (1000).

[0096] The reconnection step (S4) is based on the premise that the rotation of the input body (3000) is below a predetermined speed or that the rotation is stopped. When the rotation of the input body (3000) is below a predetermined speed, the centrifugal pin (3300) returns to its initial position and the clutch hole (3100) is opened. The input body (3000) is rotated to re-engage the clutch pin (7100) to the clutch hole (3100). When the clutch pin (7100) is re-engaged to the clutch hole (3100), the rotational torque applied to the input body (3000) can be transmitted to the rotating body (1000).

[0097] According to the present invention, an inertia brake (100) is operated based on the acceleration of the rotating body (1000). Therefore, braking can be performed in advance if the acceleration exceeds a predetermined limit before the rotating body (1000) rotates at high speed due to sudden acceleration. In addition, even if rotation caused by external torque continues in the input body (3000), stability can be ensured by blocking the transmission of rotational torque to the rotating body (1000) through the clutch part (7000).

[0099] Although an embodiment of the present invention has been described above, those skilled in the art may modify and change the present invention in various ways by adding, changing, deleting, or adding components, etc., without departing from the spirit of the present invention as described in the claims, and such modifications and changes are also to be included within the scope of the rights of the present invention. Explanation of the symbols

[0100] 100 Inertia Brake 1000 Rotating Body 1100 1st output body 1300 2nd output body 1500 3rd output body 2000 brake drum 3000 input body 3100 clutch hole 3300 centrifugal pin 3500 centrifugal spring 5000 Inertial motion part 5100 Inertial body 5110 Central member 5130 Extension member 5300 Inertia Spring 5500 Slider 5510 Clutch contact surface 5530 Brake contact surface 5700 Inertia Path 5900 Fixed Rib 7000 Clutch part 7100 Clutch pin 7110 Guide surface 7130 Slider contact surface 7150 Inclined surface 7300 Clutch spring 9000 Brake part 9100 Brake pin 9300 Brake Spring 9500 Return Spring 9700 Brake Fixture 9900 Brake Pad R Radial direction H Vertical direction L Left / Right Direction S1 Inertial Motion Stage S2 Braking stage S3 Blocking stage S4 Reconnection Step

Claims

Claim 1 An input body that rotates on an axis when rotational torque is applied from the outside; a rotating body connected to the input body and capable of rotating together; an inertial motion part capable of moving in left and right directions according to the rotation of the rotating body; a clutch part that selectively blocks the rotational torque transmitted to the rotating body; and a brake part that brakes the rotating body, wherein the clutch part is arranged to form a pair on both sides and the inertial motion part is arranged between the pair of clutch parts, the inertial motion part, the clutch part, and the brake part are arranged inside the rotating body, and the clutch part and the brake part operate when the rotating body rotates beyond a predetermined acceleration. Claim 2 An inertia brake according to claim 1, wherein a plurality of the brake parts are spaced apart from each other by a predetermined distance. Claim 3 In claim 1, the rotating body comprises a third output body positioned to contact the upper end of the input body; a second output body coupled to the upper end of the third output body; and a first output body coupled to the upper end of the second output body, wherein the first output body, the second output body, and the third output body are bolted together and rotate together, an inertia brake. Claim 4 In claim 3, the inertial motion part comprises: an inertial body capable of moving in the left and right directions having a predetermined mass; an inertial spring coupled to both sides of the inertial body; and a slider coupled to both ends of the inertial body and capable of sliding in the left and right directions, an inertial brake. Claim 5 In claim 4, the clutch portion includes a clutch pin having one side coupled to the lower end of the first output body and the other side detachably coupled to the input body, and the clutch pin has a shape extending vertically to penetrate the second output body and the third output body, an inertia brake. Claim 6 In claim 5, the inertia brake comprises a brake drum that surrounds and is coupled to the outer surface of the rotating body and rotates together with the rotating body, wherein the brake part comprises: a brake fixing member coupled to the upper part of the third output body and having a pair of brake pins coupled to both ends having a shape extending radially; and a brake pad coupled to the radial ends of the brake pins. Claim 7 In claim 6, an inertia brake in which the slider slides to press the clutch pin in a vertical direction while simultaneously pressing the brake pin in a radial direction. Claim 8 In claim 7, the brake pin and the brake pad are pressed by the slider and move in the radial direction, and the brake pad presses the inner wall of the brake drum to brake, an inertia brake. Claim 9 In claim 7, the input body includes a clutch hole into which the clutch pin can be inserted, the other side of the clutch pin has a shape that is cut at an angle, and the clutch hole is formed to correspond to the shape of the other side of the clutch pin, an inertia brake. Claim 10 In claim 7, the inertia brake comprises: a slider having a clutch contact surface formed on the outer surface of the slider to correspond to the clutch pin shape; and a brake contact surface formed to correspond to the brake pin shape. Claim 11 In claim 9, the inertia brake, wherein the clutch pin is pressed by the slider and moves in the vertical direction to disengage from the clutch hole. Claim 12 In claim 9, the input body comprises a centrifugal pin capable of moving in the radial direction by centrifugal force, an inertia brake. Claim 13 A braking method using an inertia brake according to claim 6, comprising: an inertia motion step in which the inertia motion part moves in the left and right directions when the rotating body rotates; and a braking step of releasing the coupling between the input body and the rotating body and stopping the rotation of the rotating body. Claim 14 In claim 13, the braking step is a braking method of an inertia brake in which the slider simultaneously presses and moves the clutch pin and the brake pin, the clutch pin moves in a vertical direction to detach from the input body, and the brake pin moves in a radial direction so that the brake pad presses against the inner wall of the brake drum. Claim 15 A braking method for an inertia brake according to claim 13, further comprising a blocking step in which a centrifugal pin, movable in the radial direction by centrifugal force, covers a clutch hole in which the clutch pin and the input body are detachably coupled. Claim 16 A braking method for an inertia brake according to claim 15, further comprising a reconnection step in which the rotation of the input body is stopped and the input body is rotated so that the clutch pin engages with the clutch hole.

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