Dog clutch actuator and dog clutch system comprising a dog clutch actuator

Abstract

The present invention relates to a dog clutch actuator and a dog clutch system including the dog clutch actuator. The dog clutch actuator includes a pull sleeve installed to a shaft and movable in an axial direction to push or pull a dog clutch moving part movably connected to the shaft in the axial direction, a base plate movably installed to the pull sleeve, a wedge block installed to the base plate and movable radially with respect to the base plate, a shape memory alloy wire connecting the base plate and the wedge block and configured to contract and expand according to whether power is supplied to move the wedge block, a slider movably installed to the pull sleeve and forming cam contact with the wedge block to push the dog clutch moving part and disposed between the wedge block and the dog clutch moving part, and at least one actuator spring elastically connecting the base plate and the slider.

Description

[0001] Cross-references to related applications This application claims priority and benefit to Korean Patent Application No. 10-2025-0024770, filed on February 26, 2025, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to a claw clutch actuator and a claw clutch system including the claw clutch actuator, and more specifically, to a claw clutch actuator and system that can reduce weight, improve space utilization and improve power transmission efficiency. Background Technology

[0003] Disconnector systems, typically used in vehicles, are devices that separate or connect the motor and drive shaft depending on the driving conditions.

[0004] The four-wheel drive system of an electric vehicle includes a main drive wheel and an auxiliary drive wheel. An isolator system cuts off power to the auxiliary drive wheel. This reduces unnecessary four-wheel drive and improves power efficiency by approximately 6-8%.

[0005] Typical isolator systems use rotary motors and dog clutch actuators, including ball screws. Rotary motors and ball screw actuators have limitations in terms of technological improvement regarding weight, space utilization, and power transmission efficiency.

[0006] Alternatively, electromagnetic actuators can be considered, but their limitation is that they require a large power consumption to obtain sufficient force.

[0007] The information included in this background section is intended to facilitate an understanding of the background technology of the present invention and may include topics of conventional technology that are not known to those skilled in the art. Summary of the Invention

[0008] This invention provides a claw clutch actuator capable of driving a claw clutch by supplying electricity to a shape memory alloy wire in a simple configuration. This invention also provides a claw clutch system including the claw clutch actuator.

[0009] A claw clutch actuator according to an embodiment of the present invention may include a pull sleeve movably mounted on a shaft and configured to move in an axial direction to push or pull a claw clutch moving portion movably connected to the shaft in an axial direction. The claw clutch actuator may further include a base plate, a wedge block, and a shape memory alloy wire, the base plate being movably mounted to the pull sleeve; the wedge block being mounted on the base plate and movable radially relative to the base plate; the shape memory alloy wire connecting the base plate and the wedge block and configured to contract and expand based on the availability of power to move the wedge block. The claw clutch actuator may further include a slider movably mounted to the pull sleeve, forming a cam contact with the wedge block to push the claw clutch moving portion, and disposed between the wedge block and the claw clutch moving portion. The claw clutch actuator may also include at least one actuator spring that elastically connects the base plate and the slider.

[0010] The claw clutch actuator may further include pulleys rotatably mounted on each of the base plate and the wedge, with shape memory alloy wire wound around the pulleys.

[0011] The claw clutch actuator may further include a track block that is connected to a base plate and can slide radially relative to the base plate.

[0012] Each of the wedges may include a wedge body connected to a corresponding track block, with a pulley rotatably mounted on the wedge body, and each of the wedges may include a cam guide surface formed or configured to be inclined in an oblique direction on the wedge body.

[0013] The traction sleeve may include a cylindrical sleeve body, a traction flange, and a support flange. The sleeve body is slidably mounted on a shaft. The traction flange is formed or disposed at one end of the sleeve body and contacts a moving part of a claw clutch. The support flange is formed or disposed at the other end of the sleeve body to push a base plate.

[0014] The slider may include a slider body, a first shoulder, a second shoulder, and a cam follower. The slider body is slidably connected to the pull sleeve. The first shoulder is formed or disposed at one end of the slider body to push the claw clutch moving part. The second shoulder is formed or disposed at the other end of the slider body. The cam follower is formed or disposed on the second shoulder to contact the wedge block cam.

[0015] The slider may include a plurality of cam follower portions, and each of the cam follower portions may include a cam follower surface that contacts a cam that is formed or disposed on a corresponding cam guide surface of each of the wedges.

[0016] The actuator spring may include a tension helical spring fixed to the base plate and the slider.

[0017] Shape memory alloy wires can contract due to heat when electricity is supplied, and can expand due to cooling when the power supply is cut off.

[0018] A claw clutch system according to an embodiment of the present invention may include a claw clutch housing and a claw clutch moving part, the claw clutch housing being connected to a first shaft and having a first gear formed or disposed in the claw clutch housing; the claw clutch moving part being movably connected to a second shaft arranged coaxially with the first shaft and having a second gear selectively engaging the first gear. The claw clutch system may further include a claw clutch actuator mounted on the second shaft.

[0019] The first gear may be a housing clutch claw formed or disposed on the inner circumference of the claw clutch housing.

[0020] The second gear may be a moving clutch pawl that is formed or disposed on the outer periphery of the moving part of the pawl clutch.

[0021] The moving part of the claw clutch may include a flange pull edge that contacts the pull sleeve of the claw clutch actuator.

[0022] The claw clutch system may further include a clutch fixing unit mounted on the claw clutch moving part to restrict the movement of the claw clutch moving part when the first gear and the second gear are engaged.

[0023] The clutch retaining unit may include a locking groove and at least one anchoring member, the locking groove being formed or disposed on the outer periphery of the second shaft, and the at least one anchoring member being selectively inserted into the locking groove.

[0024] At least one anchor may be located in an elongated hole formed or provided (i.e. arranged) along the length of the pull sleeve of the claw clutch actuator.

[0025] The clutch fixing unit may further include an anchor housing and an anchor spring, the anchor housing being fixed to the claw clutch moving part, and the anchor spring being arranged in the anchor housing to elastically support at least one anchor.

[0026] The claw clutch system may further include a base fixing portion mounted in the system housing of the claw clutch system to selectively fix the base plate of the claw clutch actuator. The claw clutch system may also include a slider fixing portion mounted in the system housing to selectively fix the slider of the claw clutch actuator.

[0027] The base fixing portion may include a base fixing block, which can be selectively moved into at least one base fixing groove formed or disposed in the outer periphery of the substrate and movably mounted in at least one base fixing shell fixed to the system housing. The base fixing portion may also include a shape memory alloy spring connected to the base fixing shell and the base fixing block. The shape memory alloy spring may be placed within the base fixing shell and can be configured to contract and expand based on whether power is supplied.

[0028] The slider fixing part may include a slider fixing block, which is selectively inserted into at least one slider fixing groove formed or disposed in the outer periphery of the slider and movably mounted in at least one slider fixing shell fixed to the system housing. The slider fixing part may also include a spring disposed within the slider fixing shell and connected to the slider fixing shell and the slider fixing block.

[0029] According to the embodiments of the claw clutch actuator and the claw clutch system including the claw clutch actuator, the claw clutch actuator has a simple configuration and can achieve a relatively small and light weight.

[0030] Furthermore, according to embodiments of the claw clutch actuator and the claw clutch system including the claw clutch actuator, fuel efficiency can be improved because no additional power is required to maintain clutch engagement by applying a fixing part.

[0031] Furthermore, the effects that can be obtained or anticipated from embodiments of the invention are disclosed, directly or implicitly, in the detailed description provided below. In other words, various effects predicted according to embodiments of the invention will be disclosed in the detailed description provided later. Attached Figure Description

[0032] The accompanying drawings are intended as a reference for explaining embodiments of the invention. Therefore, the technical concept of the invention should not be construed as being limited to the accompanying drawings.

[0033] Figure 1 This is a cross-sectional view showing a claw clutch system according to an embodiment of the present invention.

[0034] Figure 2 This is a perspective view showing a claw clutch actuator according to an embodiment of the present invention.

[0035] Figure 3 This is a cross-sectional view showing a claw clutch actuator according to an embodiment of the present invention.

[0036] Figure 4A and Figure 4B This is a perspective view showing a pull sleeve applied to a claw clutch actuator according to an embodiment of the present invention.

[0037] Figure 5 This is a diagram illustrating a substrate applied to a claw clutch actuator according to an embodiment of the present invention.

[0038] Figure 6 This is a perspective view showing a wedge block applied to a claw clutch actuator according to an embodiment of the present invention.

[0039] Figure 7 This is a diagram illustrating the mounting structure of the wedge block and pulley applied to a claw clutch actuator according to an embodiment of the present invention.

[0040] Figure 8A , Figure 8B and Figure 8C This is a diagram illustrating a slider applied to a claw clutch actuator according to an embodiment of the present invention.

[0041] Figures 9 to 11 This is a diagram illustrating a clutch fixing unit applied to a claw clutch system according to an embodiment of the present invention.

[0042] Figure 12A and Figure 12B This is a diagram showing a base fixing part applied to a claw clutch system according to an embodiment of the present invention.

[0043] Figure 13A and Figure 13B This is a diagram illustrating a sliding member fixing portion applied to a claw clutch system according to an embodiment of the present invention.

[0044] Figures 14 to 17 This is a diagram illustrating the operation of a claw clutch actuator and a claw clutch system including the claw clutch actuator according to an embodiment of the present invention.

[0045] The accompanying drawings mentioned above are not necessarily drawn to scale, but should be understood as appropriately simplified depictions of various features illustrating the basic principles of the invention. For example, specific design features of the invention (including specific dimensions, orientations, positions, and shapes) will be determined in part by the specific environment in which they will be applied and used.

[0046] Explanation of reference numerals in the attached figures: 1: Claw clutch system 3: System casing 10: Claw clutch 11: Claw clutch housing 13: First Axis 15: First Gear 21: Claw clutch moving part 23: Second Axis 25: Second Gear 27: External gear 29: Flange pulling edge 30: Clutch fixing unit 31: Locking slot 33: Anchoring component 35: Anchor housing 37: Anchor spring 50: Base fixing part 51: Base fixing block 53: Shape memory alloy spring 55: Base fixing groove 57: Base fixing shell 59, 79: Shell fixing components 70: Sliding component fixing part 71: Sliding component fixing block 73: Spring 75: Sliding component fixing groove 77: Sliding component fixing housing 100: Claw clutch actuator 110: Pulling sleeve 111: Sleeve body 113: Tension flange 115: Support flange portion 117: Narrow aperture 120: Substrate 121: Connecting hole 130: Track Block 131: Guide rail 140: Wedge block 141: Wedge 143: Cam guide surface 150: Pulley 160: Shape memory alloy wire 170: Slider 171: Slider body 173: First shoulder 175: Second shoulder 177: Cam follower 179: Cam follower surface 180: Actuator spring 181: Tension coil spring 183: Spring seat. Detailed Implementation

[0047] The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention.

[0048] As used in this specification, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise.

[0049] It should also be understood that the terms "comprising," "having," and / or "including" as used in this specification mean the presence of a specified feature, value, step, operation, element, and / or component. This does not preclude the presence or addition of one or more other features, values, steps, operations, components, and / or groups thereof.

[0050] As used in this specification, the term "and / or" includes any one or all of the related listed items.

[0051] In this specification, the term "connection" refers to a physical relationship between two components, wherein the components are directly connected to each other or indirectly connected through one or more intermediate components.

[0052] Additionally, terms such as "element," "component," and "unit" used in the specification refer to an integrated unit that performs at least one function or operation. Furthermore, when components, assemblies, devices, units, modules, controllers, elements, etc., of the present invention are described as having a purpose or performing an operation or function, such components, assemblies, devices, units, modules, controllers, or elements should be considered herein as "configured to" satisfy that purpose or perform that operation or function. The present invention describes a claw clutch actuator and system that may include a controller for operating or controlling aspects thereof. The controller or other such components may be implemented separately or may include a processor and memory (e.g., a non-volatile computer-readable medium) as part of the controller or component.

[0053] As used in this specification, the terms "vehicle," "car," "of a vehicle," or other similar terms generally include vehicles. Such vehicles may include sport utility vehicles (SUVs), buses, trucks, passenger vehicles including various commercial vehicles, ships, boats and vessels of various types, aircraft, etc. Such vehicles may also include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen fuel cell vehicles, and vehicles using other alternative fuels (e.g., fuels obtained from resources other than petroleum).

[0054] In the following, embodiments of the invention will be described in detail with reference to the accompanying drawings.

[0055] Figure 1 This is a cross-sectional view showing an embodiment of the claw clutch system 1 according to the present invention.

[0056] refer to Figure 1 For example, the claw clutch system 1 according to an embodiment of the present invention can be applied to a four-wheel drive system of an electric vehicle.

[0057] The claw clutch system 1 may include a claw clutch 10, a claw clutch actuator 100, and a clutch fixing unit 30.

[0058] A claw clutch (also known as a dog box, dog gear, dog ring, clutch dog, or rigid clutch) is a type of clutch that connects two rotating shafts or other rotating components through the meshing of interlocking teeth or claws rather than friction.

[0059] The two parts of a clutch engage with each other by abutting against each other and are designed to rotate at the same speed without slipping. Here, the pawl is a tool or device used to lock the two components together.

[0060] By utilizing these characteristics, for example, a claw clutch is used in a transmission to engage different gears, thereby causing the input and output shafts to rotate.

[0061] The four-wheel drive system of an electric vehicle consists of a main drive wheel and an auxiliary drive wheel. An isolator system is used to disconnect power between the auxiliary drive wheel and the main drive wheel. This reduces unnecessary four-wheel drive and improves power efficiency by approximately 6-8%.

[0062] Rotary motors and ball screw actuators used in general isolator systems have limitations in terms of technological improvement in terms of weight, space utilization, and power transmission efficiency.

[0063] When using electromagnetic actuators, power consumption may increase in order to obtain sufficient force.

[0064] The claw clutch actuator and system according to the disclosed embodiments have a simple configuration. Therefore, relatively small and lightweight claw clutch actuators and systems including claw clutch actuators can be realized.

[0065] In this specification, when referring to the accompanying drawings, the reference directions used to describe the following components may be set as the axial direction, the radial direction perpendicular to the axial direction (or the radial direction), and the vertical direction.

[0066] In this specification, the terms "top," "upper," or "upper surface" of an assembly refer to the relatively higher end, section, or surface of the assembly in the accompanying drawings, while the terms "bottom," "lower," or "lower surface" of an assembly refer to the relatively lower end, section, or surface of the assembly in the accompanying drawings.

[0067] In this specification, the end of a component (e.g., one end or the other end) refers to the end of the component in any direction, and the end portion of a component (e.g., one end or the other end) refers to a portion of the component that includes the said end or end.

[0068] According to the disclosed embodiments, a claw clutch 10 applicable to a claw clutch system 1 may include a claw clutch housing 11 and a claw clutch moving part 21.

[0069] The claw clutch housing 11 is connected to the first shaft 13, and the first gear 15 may be formed or disposed in the claw clutch housing 11. For example, the first gear 15 may be formed or disposed on the inner circumference of the claw clutch housing 11.

[0070] The claw clutch moving part 21 can be movably connected in the axial direction to the second shaft 23 arranged coaxially with the first shaft 13.

[0071] The claw clutch moving part 21 may include a second gear 25 that selectively meshes with the first gear 15 of the claw clutch housing 11.

[0072] The first gear 15 may be a housing clutch dog formed or disposed on the inner periphery of the claw clutch housing 11, and the second gear 25 may be a moving portion clutch dog formed or disposed on the outer periphery of the claw clutch moving portion 21.

[0073] For example, the claw clutch housing 11 and the first shaft 13 can be connected by bolts and a helical gear. The combination of the claw clutch housing 11 and the first shaft 13 should be known or obvious to those skilled in the art, and therefore its detailed description is omitted.

[0074] The claw clutch moving part 21 and the second shaft 23 are connected to enable axial movement. For example, splines or serrations are formed or provided on the inner circumference of the claw clutch moving part 21 and the outer circumference of the second shaft 23, so that the claw clutch moving part 21 and the second shaft 23 perform the same rotation and can achieve relative axial movement.

[0075] like Figure 1 As shown, the external gear 27 can be configured to transmit power to other components of the isolator system. The connections and functions of the external gear 27 in the isolator system should be known or obvious to those skilled in the art, and therefore a detailed description thereof is omitted.

[0076] According to the implementation scheme, the claw clutch actuator 100 is configured to drive the claw clutch 10.

[0077] The claw clutch actuator 100 can push or pull the claw clutch moving part 21 and cause the claw clutch moving part 21 to move in the axial direction along the second shaft 23.

[0078] When the claw clutch actuator 100 pushes the claw clutch moving part 21 in the axial direction along the second shaft 23, the first gear 15 of the claw clutch housing 11 and the second gear 25 of the claw clutch moving part 21 mesh, and the claw clutch housing 11 and the claw clutch moving part 21 can be connected to each other.

[0079] When the claw clutch actuator 100 pulls the claw clutch moving part 21 in the axial direction along the second shaft 23, the first gear 15 of the claw clutch housing 11 and the second gear 25 of the claw clutch moving part 21 separate, and the engagement between the claw clutch housing 11 and the claw clutch moving part 21 can be released.

[0080] According to the implementation scheme, the claw clutch actuator 100 is mounted on the second shaft 23. The configuration of the claw clutch actuator 100 is described in further detail below.

[0081] In the disclosed embodiments, the clutch fixing unit 30 is configured to restrict the movement of the claw clutch moving part 21 when the first gear 15 of the claw clutch housing 11 and the second gear 25 of the claw clutch moving part 21 are engaged.

[0082] The clutch fixing unit 30 is mounted on the claw clutch moving part 21. The configuration of the clutch fixing unit 30 according to the disclosed embodiment of the present invention will be described in further detail below.

[0083] Figure 2 This is a perspective view showing a claw clutch actuator 100 according to an embodiment of the present invention. Figure 3 This is a cross-sectional view showing a claw clutch actuator 100 according to an embodiment.

[0084] refer to Figures 1 to 3 According to the embodiment, the claw clutch actuator 100 may include a pull sleeve 110, a base plate 120, a track block 130, a wedge block 140, a pulley 150, a shape memory alloy wire 160, a slider 170, and at least one actuator spring 180.

[0085] In an embodiment of the invention, the pull sleeve 110 is configured to push or pull the claw clutch moving part 21 of the claw clutch 10 in the axial direction along the second shaft 23.

[0086] The pulling direction here is defined as the other direction in which the claw clutch moving part 21 is separated from the claw clutch housing 11 so that the claw clutch moving part 21 disengages from the claw clutch housing 11.

[0087] The traction sleeve 110 is movably mounted on the second shaft 23 in the axial direction and can be connected to the claw clutch moving part 21.

[0088] The pull sleeve 110 is cylindrical and can be fitted to the outer periphery of the second shaft 23 in the axial direction. The inner periphery of the pull sleeve 110 can slidably contact (i.e., engage) the outer periphery of the second shaft 23.

[0089] The traction sleeve 110 is slidably connected to the second shaft 23 along the axial direction, and can be slidably connected to the claw clutch moving part 21 that rotates through the second shaft 23.

[0090] Figure 4A and Figure 4B This is a perspective view showing a pull sleeve 110 applied to a claw clutch actuator 100 according to a disclosed embodiment.

[0091] refer to Figure 4A and Figure 4B The traction sleeve 110 may include a sleeve body 111, a traction flange 113, and a support flange 115.

[0092] The sleeve body 111 is slidably mounted on the second shaft 23 and can be configured as a cylinder with open ends.

[0093] The tension flange 113 is formed or provided at one end of the sleeve body 111 and can contact the claw clutch moving part 21.

[0094] The pull flange 113 can contact the pull edge 29 of the flange formed or provided on the moving part 21 of the claw clutch. The support flange 115 is configured to slide the base plate 120, as described further below. The support flange 115 is formed or provided on the other end of the sleeve body 111.

[0095] The traction sleeve 110 according to an embodiment of the invention includes at least one elongated hole 117 formed or disposed (i.e., arranged) along the length direction. For example, at least one elongated hole 117 may be formed or disposed in multiple (e.g., four) along the length direction of the sleeve body 111. Here, the length direction refers to the axial direction of the first shaft 13 and the second shaft 23, which is the same direction as the direction of movement of the claw clutch moving part 21.

[0096] In an embodiment of the present invention, reference is made to... Figures 1 to 3 The substrate 120 is movably mounted on the traction sleeve 110 along the axial direction of the second axis 23.

[0097] Figure 5 This is a diagram showing a substrate 120 applied to a claw clutch actuator 100 according to a disclosed embodiment.

[0098] In one example, substrate 120 can be configured as a circular plate, such as... Figure 5As shown. The substrate 120 can be assembled to the outer periphery of the traction sleeve 110 along the axial direction of the second axis 23 through the connecting hole 121 formed or provided in the center of the substrate 120.

[0099] In embodiments of the present invention, such as Figure 5 As shown, the track block 130 can be slidably mounted on the base plate 120 in the radial direction.

[0100] The track block 130 can be radially slidably connected to the guide rail 131, which is fixed to the base plate 120 in the radial direction.

[0101] In an embodiment of the present invention, reference is made to... Figures 1 to 3 The wedge block 140 can be slidably mounted to the substrate 120 in the radial direction.

[0102] Figure 6 This is a perspective view showing a wedge block 140 applied to a claw clutch actuator 100 according to an embodiment of the present invention. Figure 7 This is a diagram showing the mounting structure of the wedge block 140 and pulley 150 applied to the claw clutch actuator 100 according to an embodiment.

[0103] refer to Figures 1 to 7 The wedge blocks 140 are connected to the track blocks 130. Each of these wedge blocks 140 may include a wedge body 141 and a cam guide surface 143.

[0104] The wedge-shaped body 141 can be engaged to the track block 130 by fastening members, such as bolts and nuts.

[0105] The cam guide surface 143 is formed or configured to be inclined in an oblique direction relative to the wedge-shaped body 141. For example, the cam guide surface 143 may be formed or configured to be an inclined surface with a cross section that increases in the direction of the claw clutch moving part 21 toward the claw clutch housing 11.

[0106] In an embodiment of the invention, pulley 150 may be rotatably mounted on each of substrate 120 and wedge block 140.

[0107] The pulleys 150 are distributed on the substrate 120 with the connection hole 121 as the center. Each pulley 150 is rotatably mounted on the wedge-shaped body 141 of the wedge block 140.

[0108] In an embodiment of the invention, the shape memory alloy wire 160 is configured to connect the substrate 120 and the wedge block 140.

[0109] The shape memory alloy wire 160 can contract and expand depending on whether power is supplied, in order to move the wedge block 140.

[0110] Shape memory alloys are alloys that can be deformed and recover their original shape due to a phase transformation that occurs at a specific temperature (e.g., a change in crystal structure). Depending on the alloy's composition, the phase transformation temperature can be controlled, and the strain limit and recovery stress caused by recovery can be determined based on post-processing.

[0111] The shape memory alloy wire 160 can shrink due to heat generated during power supply and expand due to cooling when power supply is cut off. The shape memory alloy wire 160 can be connected to a power supply cable.

[0112] When electricity is supplied to the shape memory alloy wire 160, the shape memory alloy wire 160 is heated by the "Joule" heat generated by the current and can shrink due to the phase transition caused by the temperature change.

[0113] Additionally, when the power applied to the shape memory alloy wire 160 is cut off, the shape memory alloy wire 160 cools down and can expand due to a phase transition caused by the temperature change.

[0114] The shape memory alloy wire 160 is provided in the form of a loop of predetermined length and wound around a pulley 150 mounted on the substrate 120 and the wedge block 140.

[0115] The length of the shape memory alloy wire 160 can be selectively set according to the current required to deform the shape memory alloy wire 160, the required moving distance of the claw clutch moving part 21, and the force and time required for the claw clutch moving part 21 and the claw clutch housing 11 to engage and disengage.

[0116] The number and diameter of the pulleys 150 wound with shape memory alloy wire 160 are not limited to the configuration shown in the figures or any specific value. For example, the number and diameter of the pulleys 150 can be determined based on the forces required for engagement and disengagement of the claw clutch moving part 21 and the claw clutch housing 11, the strain rate of the shape memory alloy wire 160, and the required length, etc.

[0117] refer to Figures 1 to 3 In an embodiment of the present invention, the slider 170 is configured to push the pawl clutch moving part 21. Additionally, the slider 170 is configured to support the pawl clutch moving part 21 when it is pulled by the pull sleeve 110.

[0118] The slider 170 can be movably mounted to the pull sleeve 110 to make cam contact with the wedge block 140. The slider 170 can be placed between the wedge block 140 and the claw clutch moving part 21 to push the claw clutch moving part 21.

[0119] The direction of movement is defined as the direction in which the claw clutch moving part 21 is adjacent to the claw clutch housing 11 so as to engage the claw clutch moving part 21 with the claw clutch housing 11.

[0120] The slider 170 can be fitted to the outer periphery of the pull sleeve 110 along the length direction of the pull sleeve 110. The inner periphery of the slider 170 can slidably contact (i.e., engage) the outer periphery of the pull sleeve 110.

[0121] The slider 170 can contact or be spaced apart from the claw clutch moving part 21 that rotates via the second shaft 23.

[0122] Figure 8A , Figure 8B and Figure 8C This is a diagram showing a slider 170 applied to a claw clutch actuator 100 according to an embodiment.

[0123] The slider 170 may include a slider body 171, a first shoulder 173, a second shoulder 175, and a cam follower 177, such as Figure 3 as well as Figure 8A , Figure 8B and Figure 8C As shown.

[0124] The slider body 171 is slidably connected to the pull sleeve 110. The first shoulder 173 is formed or configured as a flange shape protruding from one end of the slider body 171 to support the claw clutch moving part 21. The second shoulder 175 is formed or configured as a flange shape protruding from the other end of the slider body 171.

[0125] A cam follower 177 is formed or disposed on the second shoulder 175 to make cam contact with the wedge block 140.

[0126] Each cam follower 177 may include a cam follower surface 179 configured to make cam contact with the cam guide surface 143 of the wedge block 140.

[0127] The cam follower surface 179 is formed or configured to be inclined in an oblique direction on each cam follower portion 177. For example, the cam follower surface 179 may be formed or configured to be an inclined surface with a cross section decreasing from the base plate 120 side along the direction of the claw clutch housing 11.

[0128] The tilt angles of the cam guide surface 143 and the cam follower surface 179 that make surface contact can be determined based on the force required to engage and disengage the claw clutch moving part 21 and the claw clutch housing 11, respectively, and the required travel distance of the claw clutch moving part 21.

[0129] refer to Figure 2 and Figure 3In an embodiment of the invention, at least one actuator spring 180 is configured to elastically support a base plate 120 and a slider 170, wherein a wedge block 140 is located between the base plate 120 and the slider 170.

[0130] The accompanying drawing shows one actuator spring 180. However, for example, two or more actuator springs 180 may be provided. The number of actuator springs 180 can be determined based on the forces required to engage and disengage the pawl clutch moving part 21 and the pawl clutch housing 11, respectively.

[0131] At least one actuator spring 180 may include a tension helical spring 181 fixed to the base plate 120 and the slider 170.

[0132] At least one actuator spring 180 may have its two ends fixed to a spring seat 183. The spring seat 183 may be fixed to the base plate 120 and the slider 170 respectively.

[0133] Figures 9 to 11 This is a diagram showing a clutch fixing unit 30 applied to a claw clutch system 1 according to a disclosed embodiment.

[0134] refer to Figures 1 to 11 According to the embodiment, the clutch fixing unit 30 can be mounted on the claw clutch moving part 21 in multiple forms. The accompanying drawings show clutch fixing units 30 arranged radially in four positions, but the invention is not limited thereto.

[0135] Each of the clutch fixing units 30 according to an embodiment of the present invention may include a locking groove 31 formed or disposed on the outer periphery of the second shaft 23, and may include at least one anchor 33 selectively inserted into the respective locking groove 31.

[0136] Each of the clutch fixing units 30 may further include an anchor housing 35 fixed to the claw clutch moving part 21 and an anchor spring 37 inserted in the anchor housing 35 to elastically support at least one anchor 33.

[0137] The locking groove 31 is formed or provided along the circumferential direction of the outer periphery of the second shaft 23. Although the accompanying drawings show two locking grooves 31, the design is not limited to this. One, three or more locking grooves 31 may be formed or provided as needed to secure the pawl clutch moving part 21.

[0138] At least one anchoring member 33 may be configured to protrude from the inside of the claw clutch moving part 21, which is accessible from the outer periphery of the second shaft 23. At least one anchoring member 33 may contact the outer periphery of the second shaft 23 and be inserted into the locking groove 31.

[0139] The anchor housing 35 can be connected to the inside of the claw clutch moving part 21, for example, the flange pull edge 29.

[0140] At least one anchor 33 may protrude from the inside to the outside of the anchor housing 35.

[0141] Anchor spring 37 is disposed within anchor housing 35 and elastically supports anchor 33. In one example, anchor spring 37 may include a compression coil spring.

[0142] At least one anchor 33 may be arranged at a position corresponding to at least one elongated hole 117 formed or provided in the traction sleeve 110.

[0143] When the claw clutch moving part 21 moves along the axial direction of the second shaft 23, at least one anchor 33 can be guided along at least one elongated hole 117 to contact the outer periphery of the second shaft 23 and can be connected to the locking groove 31.

[0144] refer to Figure 1 The claw clutch system 1 according to the embodiment may further include a base fixing part 50 and a sliding member fixing part 70.

[0145] In an embodiment of the present invention, the base fixing part 50 is configured to selectively fix the base plate 120 of the claw clutch actuator 100 to the system housing 3.

[0146] The sliding member fixing part 70 is configured to selectively fix the sliding member 170 of the claw clutch actuator 100 to the system housing 3.

[0147] The system housing 3 is fixed to the vehicle body, and the claw clutch system 1 according to the disclosed embodiment can be configured within the system housing 3.

[0148] The base fixing part 50 can be installed in the system housing 3 at a position corresponding to the base plate 120.

[0149] The slider fixing part 70 can be installed in the system housing 3 at a position corresponding to the slider 170.

[0150] Figure 12A and Figure 12B This is a figure showing the base fixing part 50 applied to the claw clutch system 1 according to the embodiment.

[0151] refer to Figure 12A and Figure 12B According to an embodiment of the present invention, the base fixing part 50 may include at least one base fixing block 51 and a shape memory alloy spring 53.

[0152] At least one base fixing block 51 can be selectively connected to at least one base fixing groove 55 formed or disposed on the outer periphery of the substrate 120.

[0153] At least one base fixing block 51 is movably mounted in at least one base fixing shell 57 fixed to the system housing 3.

[0154] The fixing block 51 can move along the diameter direction of the substrate 120.

[0155] The base fixing shell 57 can be fixed to the annular shell fixing member 59 connected to the system housing 3.

[0156] For example, depending on the needs of fixing the base plate 120, at least one base fixing groove 55, at least one base fixing shell 57 and at least one base fixing block 51 can be provided in one or two or more quantities.

[0157] The shape memory alloy spring 53 is configured as a spring-type shape memory alloy. The shape memory alloy spring 53 can contract and expand depending on whether power is supplied, thereby moving the base fixing block 51.

[0158] A shape memory alloy spring 53 is arranged inside the base fixing shell 57 and connected to the fixing shell 57 and the base fixing block 51.

[0159] The shape memory alloy spring 53 generates Joule heat when electricity is supplied, contracts due to the heat generated, and expands due to cooling when the power supply is cut off. The shape memory alloy spring 53 can be connected to the power supply cable.

[0160] When power is supplied to the shape memory alloy spring 53 and the shape memory alloy spring 53 contracts, the base fixing block 51 moves into the base fixing shell 57 and can be separated from or released from the base fixing groove 55.

[0161] When the power supply to the shape memory alloy spring 53 is cut off and the shape memory alloy spring 53 expands, the base fixing block 51 moves outward along the base fixing shell 57 and can be connected to the base fixing groove 55.

[0162] Figure 13A and Figure 13B This is a figure showing the sliding member fixing part 70 applied to the claw clutch system 1 according to the embodiment.

[0163] refer to Figure 13A and Figure 13B According to an embodiment of the present invention, the sliding member fixing part 70 may include at least one sliding member fixing block 71 and a spring 73.

[0164] At least one slider fixing block 71 may be selectively connected to at least one slider fixing groove 75 formed or disposed on the outer periphery of the second shoulder 175 of the slider 170.

[0165] The sliding element fixing block 71 is movably installed in the sliding element fixing shell 77 fixed to the system housing 3.

[0166] The slider fixing block 71 can move along the diameter direction of the second shoulder 175 of the slider 170.

[0167] The sliding retainer 77 can be fixed to the annular retainer 79 connected to the system housing 3.

[0168] For example, depending on the need for fixing the slider 170, at least one slider fixing groove 75, at least one slider fixing shell 77, and at least one slider fixing block 71 can be provided in one, two, or more quantities.

[0169] Spring 73 can be configured as a compression coil spring to move the sliding block 71.

[0170] Spring 73 is arranged inside slider fixing housing 77 and connected to slider fixing housing 77 and slider fixing block 71.

[0171] The slider fixing block 71 moves into the slider fixing shell 77 while compressing the spring 73, and can contact the outer periphery of the second shoulder 175 while separating from or releasing from the slider fixing groove 75.

[0172] The sliding member fixing block 71 can move outward along the sliding member fixing shell 77 by the elastic restoring force of the spring 73 and can be connected to the sliding member fixing groove 75.

[0173] Figures 14 to 17 This is a diagram used to describe the operation of the claw clutch actuator 100 and the claw clutch system 1 including the claw clutch actuator according to the embodiment.

[0174] In the following text, see references Figures 1 to 17 The operation of the claw clutch actuator 100 and the claw clutch system 1 including the claw clutch actuator according to the embodiment is described in detail.

[0175] In embodiments of the present invention, such as Figure 1 As shown, the claw clutch housing 11 and the claw clutch moving part 21 are separated from each other, and the claw clutch housing 11 and the claw clutch moving part 21 are disconnected.

[0176] The first gear 15 of the claw clutch housing 11 and the second gear 25 of the claw clutch moving part 21 are separated from each other; therefore, the power of the first shaft 13 is not transmitted to the second shaft 23. Figure 11 As shown, at least one anchor 33 of the clutch fixing unit 30 contacts the outer periphery of the second shaft 23 through at least one elongated hole 117 of the pull sleeve 110 while compressing the anchor spring 37 in the anchor housing 35.

[0177] The wedge block 140 moves radially outward along the guide rail 131 via the track block 130 on the substrate 120.

[0178] The cam guide surface 143 of the wedge block 140 and the cam follower surface 179 of the slider 170 form surface contact (or cam contact) across their entire surfaces. The first shoulder 173 of the slider 170 supports the moving part 21 of the claw clutch.

[0179] The pulling flange portion 113 of the pulling sleeve 110 supports the flange pulling edge 29 of the moving portion 21 of the claw clutch. The supporting flange portion 115 of the pulling sleeve 110 remains separated from the base plate 120.

[0180] like Figure 12A As shown, the power supply to the shape memory alloy spring 53 of the base fixing part 50 is cut off. Accordingly, the shape memory alloy spring 53 is in an expanded state.

[0181] The base fixing block 51 of the base fixing part 50 moves outward along the base fixing shell 57 and is inserted into the base fixing groove 55. The base plate 120 is fixed to the system housing 3 by the base fixing part 50.

[0182] like Figure 13A As shown, the slider fixing block 71 of the slider fixing part 70 is inserted into the slider fixing groove 75 while being elastically supported by the spring 73. The slider 170 is fixed to the system housing 3 by the slider fixing part 70.

[0183] In this state, when power transmission between the first shaft 13 and the second shaft 23 is required, current is supplied to the shape memory alloy wire 160 under the control of a controller (e.g., a transmission controller), which is not shown.

[0184] When current is supplied to the shape memory alloy wire 160, the heat generated by the current causes the shape memory alloy wire 160 to reach the phase transition temperature, and the shape memory alloy wire 160 contracts.

[0185] When the shape memory alloy wire 160, connected to the substrate 120 and the wedge block 140 via the pulley 150, contracts, as... Figure 14 As shown, the wedge block 140 moves in the radial inward direction of the substrate 120 along the guide rail 131 via the track block 130.

[0186] The wedge block 140 slides along the cam follower surface 179 of the slider 170 via the cam guide surface 143 and moves radially inward along the substrate 120.

[0187] Through the cam action of the wedge block 140 and the slider 170, the wedge block 140 pushes the slider 170 and causes the slider 170 to move along the direction of the claw clutch housing 11.

[0188] When the wedge block 140 pushes the slider 170, the slider 170 moves, and at the same time the base plate 120 is fixed to the system housing 3.

[0189] In this process, such as Figure 13B As shown, the slider fixing block 71 moves into the slider fixing housing 77 while compressing the spring 73. When the slider fixing block 71 separates from or is released from the slider fixing groove 75, it contacts the outer periphery of the second shoulder 175. In other words, the slider 170 is released from its fixation to the system housing 3 by the slider fixing part 70.

[0190] Accordingly, when the slider 170 moves as described above, the claw clutch moving part 21 moves in the direction of the claw clutch housing 11 along the axial direction of the second shaft 23.

[0191] Additionally, while the base plate 120 is stationary, the slider 170 generates tension in at least one actuator spring 180 and moves along the direction of the claw clutch housing 11.

[0192] The spring force (or elastic restoring force) of the actuator spring 180 connected to the base plate 120 and the slider 170 is applied to the slider 170 in a direction opposite to the direction of movement of the slider 170.

[0193] During the above process, when the claw clutch moving part 21 moves, the flange pulling edge 29 of the claw clutch moving part 21 pushes the pulling flange part 113, and the pulling sleeve 110 moves together with the claw clutch moving part 21 in the direction of the claw clutch housing 11 along the axial direction of the second shaft 23. In addition, the support flange part 115 of the pulling sleeve 110 is in close contact with the base plate 120.

[0194] Therefore, the first gear 15 of the claw clutch housing 11 and the second gear 25 of the claw clutch moving part 21 mesh, and the claw clutch moving part 21 rotates together with the claw clutch housing 11. In other words, the power of the first shaft 13 is transmitted to the second shaft 23.

[0195] When the claw clutch moving part 21 moves, such as Figure 12AAs shown, the anchor 33 moves along the elongated hole 117 of the traction sleeve 110 and is positioned in the locking groove 31. The anchor 33 is inserted into the locking groove 31 by the elastic force of the anchor spring 37.

[0196] The moving part 21 of the claw clutch is engaged with the claw clutch housing 11 by the anchor 33.

[0197] As described above, when the claw clutch moving part 21 and the clutch housing 11 engage and the current supply to the shape memory alloy wire 160 is cut off, the shape memory alloy wire 160 expands (or relaxes) due to cooling.

[0198] When the shape memory alloy wire 160, connected to the substrate 120 and the wedge block 140 via the pulley 150, expands, as Figure 15 As shown, the slider 170 moves in the direction of the base plate 120 by the elastic force (or elastic restoring force) of the actuator spring 180.

[0199] When the slider 170 moves in the direction of the substrate 120, such as Figure 13A As shown, the slider fixing block 71 slides or slides on the outer periphery of the second shoulder 175 and is inserted into the slider fixing groove 75 by the elastic restoring force of the spring 73. That is, the slider 170 remains fixed to the system housing 3.

[0200] When the slider 170 moves in the direction of the substrate 120, the wedge block 140 moves along the guide rail 131 in the radial outward direction of the substrate 120 via the track block 130.

[0201] The wedge block 140 slides along the cam follower surface 179 of the slider 170 via the cam guide surface 143 and moves in the radially outward direction of the substrate 120. The cam guide surface 143 of the wedge block 140 and the cam follower surface 179 of the slider 170 form surface contact over the entire surface.

[0202] Even if the current supply to the shape memory alloy wire 160 is cut off, the engagement between the claw clutch moving part 21 and the claw clutch housing 11 will not loosen because the anchor 33 is inserted into the locking groove 31 by the elastic force of the anchor spring 37.

[0203] Therefore, according to the claw clutch actuator 100 based on the embodiment and the claw clutch system 1 including the claw clutch actuator, since no additional power supply is required to maintain the engagement of the claw clutch moving part 21 with the claw clutch housing 11, energy efficiency can be improved.

[0204] Additionally, when at least one anchor 33 is inserted into the locking groove 31, the engagement speed of the claw clutch moving part 21 and the claw clutch housing 11 can be increased by the elastic force of the anchor spring 37.

[0205] In the above state, if the power transmission of the first shaft 13 and the second shaft 23 is not required, the shape memory alloy spring 53 of the base fixing part 50 is supplied with current under the control of the controller while the sliding member 170 is fixed to the system housing 3.

[0206] Then, as Figure 12B As shown, the shape memory alloy spring 53 contracts due to heat. Accordingly, the base fixing block 51 moves into the base fixing shell 57 and separates from the base fixing groove 55. That is, the base plate 120 is released from the fixation of the base fixing part 50 to the system housing 3.

[0207] At the same time, current is supplied to the shape memory alloy wire 160 under the control of the controller.

[0208] When current is supplied to the shape memory alloy wire 160, the heat generated by the current causes the shape memory alloy wire 160 to reach the phase transition temperature, and the shape memory alloy wire 160 contracts.

[0209] When the shape memory alloy wire 160, connected to the substrate 120 and the wedge block 140 via the pulley 150, contracts, as... Figure 16 As shown, the wedge block 140 moves in the radial inward direction of the substrate 120 along the guide rail 131 via the track block 130.

[0210] The wedge block 140 slides along the cam follower surface 179 of the slider 170 via the cam guide surface 143 and moves in the radially inward direction of the substrate 120.

[0211] Through the cam action of the wedge block 140 and the slider 170, the wedge block 140 pushes the substrate 120, causing the substrate 120 to move to the left as shown in the figure.

[0212] When the wedge block 140 pushes the substrate 120, the substrate 120 moves, while the slider 170 is fixed to the system housing 3.

[0213] Then, when the slider 170 is not moving, the base plate 120 generates tension in the actuator spring 180 and moves away from the claw clutch housing 11.

[0214] The elastic force (or elastic restoring force) of the actuator spring 180 connected to the substrate 120 and the slider 170 is applied to the substrate 120 in a direction opposite to the direction of movement of the substrate 120.

[0215] The base plate 120 moves and pushes the support flange 115, pulling the sleeve 110 together with the base plate 120 away from the claw clutch housing 11 in the axial direction of the second shaft 23.

[0216] The pull sleeve 110 is in close contact with the base plate 120 via the support flange 115 and moves away from the claw clutch housing 11 together with the base plate 120.

[0217] The pulling flange 113 of the pulling sleeve 110 pushes the flange pulling edge 29 of the claw clutch moving part 21. Accordingly, the claw clutch moving part 21 moves away from the claw clutch housing 11 along the axial direction of the second shaft 23.

[0218] Therefore, the claw clutch moving part 21 separates from the claw clutch housing 11. Then, the engagement between the first gear 15 of the claw clutch housing 11 and the second gear 25 of the claw clutch moving part 21 is disengaged, and the power of the first shaft 13 is not transmitted to the second shaft 23.

[0219] like Figure 10 As shown, when the claw clutch moving part 21 moves, the anchor 33 disengages from the locking groove 31 while compressing the anchor spring 37 in the anchor housing 35 and contacts the outer periphery of the second shaft 23 through at least one elongated hole 117 of the pull sleeve 110.

[0220] As a result, the claw clutch moving part 21 and the claw clutch housing 11 remain disengaged.

[0221] On the other hand, when the current supply to the shape memory alloy wire 160 is cut off as described above when the claw clutch moving part 21 and the claw clutch housing 11 are disengaged, the shape memory alloy wire 160 expands (or relaxes) due to cooling.

[0222] When the shape memory alloy wire 160, connected to the substrate 120 and the wedge block 140 via the pulley 150, expands, as Figure 17 As shown, the substrate 120 moves in the direction of the slider 170 by the elastic force (or elastic restoring force) of at least one actuator spring 180.

[0223] When the substrate 120 moves along the slider 170, the power supply to the shape memory alloy spring 53 is cut off. Then, as... Figure 12A As shown, the shape memory alloy spring 53 expands, and correspondingly, the base fixing block 51 moves outward along the base fixing shell 57 and inserts into the base fixing groove 55. In other words, the substrate 120 remains fixed to the system housing 3.

[0224] When the substrate 120 moves along the slider 170, the wedge block 140 moves along the guide rail 131 in the radial outward direction of the substrate 120 via the track block 130.

[0225] The wedge block 140 slides along the cam follower surface 179 of the slider 170 via the cam guide surface 143 and moves radially outward along the substrate 120.

[0226] The cam guide surface 143 of the wedge block 140 and the cam follower surface 179 of the slider 170 form surface contact across their entire surfaces. Furthermore, the support flange 115 of the pull sleeve 110 is spaced apart from the base plate 120.

[0227] According to the embodiment of the claw clutch actuator 100 described herein and the claw clutch system 1 including the claw clutch actuator, a relatively small and lightweight claw clutch actuator and system can be realized due to its simple configuration.

[0228] Therefore, according to the disclosed claw clutch actuator 100 and claw clutch system 1, the overall weight can be reduced, the space utilization rate can be improved, and the power transmission efficiency can be improved.

[0229] Furthermore, according to the disclosed claw clutch actuator 100 and claw clutch system 1, fuel efficiency can be improved because no additional power is required to maintain clutch engagement by applying the clutch fixing unit 30.

[0230] Although various embodiments of the invention have been described above, the invention is not limited thereto. Various modifications can be made within the scope of the patent claims, the detailed description of the invention, and the accompanying drawings, and it should be apparent that these modifications also fall within the scope of the invention.

Claims

1. A claw clutch actuator, comprising: A pull sleeve, which is movably mounted on a shaft and configured to move in the axial direction to push or pull a claw clutch moving part movably connected to the shaft in the axial direction; A substrate that is movably mounted to the traction sleeve; A wedge-shaped block, which is mounted on the substrate and is capable of moving radially relative to the substrate; A shape memory alloy wire connects the substrate and the wedge and is configured to contract and expand based on whether power is supplied to it to move the wedge; A sliding member, movably mounted to the traction sleeve, forming a cam contact with the wedge block, configured to push the moving part of the claw clutch, and disposed between the wedge block and the moving part of the claw clutch; as well as At least one actuator spring that elastically connects the base plate and the slider.

2. The claw clutch actuator of claim 1, further comprising a pulley rotatably mounted on each of the base plate and the wedge block, wherein shape memory alloy wire is wound on the pulley.

3. The claw clutch actuator of claim 2, further comprising a track block connected to a base plate and capable of sliding in a radial direction relative to the base plate.

4. The claw clutch actuator according to claim 3, wherein, Each of the wedge blocks includes: A wedge-shaped body connected to a corresponding track block of the track block, and a corresponding pulley of the pulley rotatably mounted on the wedge-shaped body; and The cam guide surface is inclined in an oblique direction on the wedge-shaped body.

5. The claw clutch actuator according to claim 1, wherein, The pulling sleeve includes: A cylindrical sleeve body that can be slidably mounted on the shaft; A tension flange portion, located at one end of the sleeve body and in contact with the moving portion of the claw clutch; and A support flange is located at the other end of the sleeve body to push the substrate.

6. The claw clutch actuator according to claim 1, wherein, The slider includes: A sliding body that is slidably connected to the pulling sleeve; A first shoulder, located at one end of the slider body, is used to push the claw clutch moving part; The second shoulder is located at the other end of the slider body; and A cam follower is located on the second shoulder to contact the wedge block cam.

7. The claw clutch actuator according to claim 6, wherein, The slider includes a plurality of cam follower parts, each of which includes a cam follower surface that contacts a cam guide surface on a corresponding wedge block.

8. The claw clutch actuator according to claim 1, wherein, The actuator spring includes a tension helical spring fixed to the base plate and the slider.

9. The claw clutch actuator according to claim 1, wherein, The shape memory alloy wire contracts due to heat generated by the electricity supplied to it and expands due to cooling when the power supply is cut off.

10. A claw clutch system, comprising: A claw-type clutch housing, which is connected to a first shaft and has a first gear; A claw clutch moving part, which is movably connected to a second shaft arranged coaxially with the first shaft and has a second gear that selectively engages the first gear; as well as The claw clutch actuator according to claim 1 is mounted on the second shaft.

11. The claw clutch system according to claim 10, wherein: The first gear is a clutch pawl located on the inner circumference of the claw clutch housing; The second gear is a moving clutch pawl located on the outer periphery of the moving part of the claw clutch.

12. The claw clutch system according to claim 10, wherein, The moving part of the claw clutch includes a flange pulling edge, which contacts the pulling sleeve of the claw clutch actuator.

13. The claw clutch system of claim 10, further comprising a clutch fixing unit, the clutch fixing unit being mounted on the claw clutch moving part and configured to restrict movement of the claw clutch moving part when the first gear and the second gear are engaged.

14. The claw clutch system according to claim 13, wherein, The clutch fixing unit includes: A locking groove, located on the outer periphery of the second shaft; and At least one anchoring element, the at least one anchoring element being configured to be selectively inserted into the locking slot.

15. The claw clutch system according to claim 14, wherein, The at least one anchor is configured to be located in an elongated hole arranged along the length of the pull sleeve of the claw clutch actuator.

16. The claw clutch system according to claim 14, wherein, The clutch fixing unit further includes: An anchor housing, which is fixed to the moving part of the claw clutch; and An anchor spring is disposed in the anchor housing and configured to elastically support the at least one anchor.

17. The claw clutch system according to claim 10, further comprising: A base fixing part is installed in the system housing of the claw clutch system to selectively fix the base plate of the claw clutch actuator; as well as A sliding member fixing part is installed in the system housing to selectively fix the sliding member of the claw clutch actuator.

18. The claw clutch system according to claim 17, wherein, The base fixing part includes: A base fixing block, which is selectively movable into at least one base fixing groove in the outer periphery of the substrate and movably mounted in at least one base fixing shell fixed to the system housing; and A shape memory alloy spring is connected to a base fixing shell and a base fixing block. The shape memory alloy spring is arranged within the base fixing shell and configured to contract and expand based on whether it is supplied with electricity.

19. The claw clutch system according to claim 17, wherein, The sliding member fixing part includes: A slider retaining block, selectively inserted into at least one slider retaining groove in the outer periphery of the slider and movably mounted in at least one slider retaining shell fixed to the system housing; and A spring is arranged inside the slider fixing housing and connected to the slider fixing housing and the slider fixing block.

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