Clutch structure, actuator and vehicle

Abstract

The embodiment of the utility model provides a clutch structure, an actuator and a vehicle, and the clutch structure comprises a shaft rod, a clutch assembly and a torsion elastic part; the clutch assembly comprises a first gear, a second gear and a mounting seat, the first gear, the second gear and the mounting seat are rotatably arranged on the shaft rod in a sleeving mode, and the mounting seat is connected with the first gear; the torsion elastic piece comprises a torsion body and a torsion arm, the torsion body is arranged on the installation base in a sleeving mode, and the torsion arm is connected with the second gear. The clutch structure provided by the embodiment of the utility model not only can transmit torques with different magnitudes in two opposite rotation directions, but also is simple in structure, so that the fault rate and the production cost of the actuator can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the clutch technical field, and particularly to a clutch structure, an actuator and a vehicle. BACKGROUND

[0002] In the related art, some actuators for providing driving force are provided with a clutch structure, which includes a friction type clutch structure, an interference type clutch structure, a jaw type clutch structure, etc. The clutch structure transmits the same size of torque in the forward rotation and the reverse rotation.

[0003] However, in some use scenarios, the clutch structure may need to transmit different sizes of torque in the forward rotation and the reverse rotation. If the clutch structure needs to transmit different sizes of torque in the forward rotation and the reverse rotation, at least two clutch structures need to be combined to achieve the same. Setting at least two clutch structures not only causes the structure of the actuator to be relatively complex, but also increases the failure rate and production cost of the actuator. CONTENT OF THE UTILITY MODEL

[0004] Therefore, an embodiment of the present application aims to provide a clutch structure, an actuator and a vehicle which can transmit different sizes of torque in two opposite rotation directions and have a simple structure.

[0005] To achieve the above-mentioned purpose, an embodiment of the present application provides a clutch structure, comprising:

[0006] a shaft rod;

[0007] a clutch assembly, the clutch assembly comprising a first gear, a second gear and a mounting seat, the first gear, the second gear and the mounting seat being rotatably sleeved on the shaft rod, and the mounting seat being connected with the first gear;

[0008] a torsional elastic member, the torsional elastic member comprising a torsional main body and a torsional arm, the torsional main body being sleeved on the mounting seat, and the torsional arm being connected with the second gear.

[0009] In an embodiment, the torsional main body is in interference fit with the mounting seat; and / or,

[0010] the torsional main body has a first end and a second end opposite in the spiral extension direction, the torsional arm is arranged at the first end, and the second end of the torsional main body is a free end.

[0011] In an embodiment, the number of turns of the torsional main body is greater than or equal to 1 turn and less than or equal to 2 turns; and / or,

[0012] The surface hardness of the torsion body is a first hardness, the surface hardness of the part of the mounting seat at least in frictional contact with the torsion body is a second hardness, and the hardness difference between the first hardness and the second hardness is less than or equal to 5HRC.

[0013] In an embodiment, the first gear includes a first tooth portion, a first mounting portion, and a mounting hole passing through the first mounting portion, the first tooth portion is annularly arranged at the outer circumferential side of the first mounting portion, the mounting seat includes a support column, a seat body at one end of the support column, and a first shaft hole passing through the support column and the seat body; the seat body is inserted into the mounting hole, the shaft rod is arranged in the first shaft hole, and the torsion body is sleeved on the support column; and / or,

[0014] The second gear includes a second tooth portion, a second mounting portion at one end of the second tooth portion, and a second shaft hole passing through the second tooth portion and the second mounting portion, the shaft rod is arranged in the second shaft hole, the second tooth portion is located on the side of the second mounting portion away from the mounting seat, and the torsion arm abuts against the second mounting portion.

[0015] In an embodiment, the seat body includes a first segment and a second segment at the side of the first segment away from the support column, the cross-sectional area of the first segment is greater than the cross-sectional area of the support column and the second segment, so that the seat body is formed in a stepped shape; the mounting hole includes a first sub-hole with a cross-sectional size matching the first segment and a second sub-hole with a cross-sectional size matching the first segment, the first segment is located in the first sub-hole, and the second segment is located in the second sub-hole.

[0016] In an embodiment, the first tooth portion and the first mounting portion surround a containing groove in communication with the mounting hole, and the support column is located in the containing groove.

[0017] In an embodiment, the first gear has a slot in communication with the containing groove, the slot is located at the side of the containing groove close to the second gear, the second gear includes the second tooth portion, the second mounting portion, and the second shaft hole, and the second mounting portion is located at the slot to shield the slot.

[0018] In an embodiment, the second gear has a limiting groove passing through the side of the second mounting portion close to the second tooth portion and the side of the second mounting portion away from the second tooth portion, and the torsion arm is located in the limiting groove.

[0019] In an embodiment, the mounting seat and the first gear are in a fitting structure or an integrally formed structure.

[0020] Another embodiment of this application provides an actuator, including a power output device and a transmission device that is drively connected to the power output device, the transmission device including the clutch structure described above.

[0021] Another embodiment of this application provides a vehicle including the clutch structure or actuator described above.

[0022] This application provides a clutch structure, actuator, and vehicle. The clutch structure has a first gear, a second gear, and a mounting base rotatably mounted on a shaft, with the mounting base connected to the first gear. A torsion body of a torsion elastic element is mounted on the mounting base, and a torsion arm is connected to the second gear. When the torsion elastic element twists in the forward direction, the friction between the torsion body and the mounting base is relatively small, resulting in a relatively small torque. Conversely, when the torsion elastic element twists in the reverse direction, the friction between the torsion body and the mounting base is relatively large, resulting in a relatively large torque. Therefore, by relying on the forward and reverse twisting of the torsion elastic element, the clutch structure can transmit torques of different magnitudes in two opposite rotational directions. This clutch structure not only transmits torques of different magnitudes in two opposite rotational directions but also has a simple structure, thereby effectively reducing the failure rate and production cost of the actuator. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an actuator according to an embodiment of this application;

[0024] Figure 2 for Figure 1 The diagram shows a partial structural schematic of the actuator.

[0025] Figure 3 for Figure 1 The diagram shows the structure of the clutch mechanism.

[0026] Figure 4 for Figure 3 The exploded view of the clutch structure is shown below;

[0027] Figure 5 for Figure 3 The cross-sectional view of the clutch structure shown;

[0028] Figure 6 for Figure 3 The cross-sectional view of the first gear shown.

[0029] Explanation of reference numerals in the attached figures

[0030] 100, power output device; 200, transmission device; 10, clutch structure; 11, shaft; 12, clutch assembly; 121, first gear; 121a, first tooth part; 121b, first mounting part; 121c, mounting hole; 121c1, first sub-hole; 121c2, second sub-hole; 121d, accommodating groove; 121e, notch; 122, second gear; 122a, second tooth part; 122b, second mounting part; 122c, first shaft hole; 122d, limiting groove; 123, mounting seat; 123a, support column; 123b, seat body; 123b1, first section; 123b2, second section; 123c, second shaft hole; 13, torsional elastic member; 13a, torsional body; 13b, torsional arm; 20, worm gear; 30, worm; 40, first transmission gear set; 50, second transmission gear set. DETAILED DESCRIPTION

[0031] The embodiment of the present application provides an executor, please refer to Figure 1 and Figure 2 , the executor includes a power output device 100 and a transmission device 200, and the power output device 100 is in transmission connection with the transmission device 200.

[0032] The power output device 100 is used for providing power for the transmission device 200, and the power output device 100 includes but is not limited to a driving motor, a hydraulic device, a pneumatic device and the like.

[0033] Exemplarily, Figure 1 The power output device 100 shown in the figure is a driving motor.

[0034] The transmission device 200 is used for being in transmission connection with other moving parts.

[0035] When the power output device 100 is in a working state, the transmission device 200 can transmit the power provided by the power output device 100 to the moving parts, so that the executor can provide driving force for the movement of the moving parts. When the power output device 100 is in a non-working state, the power output device 100 does not provide power, but if external force acts on the moving parts, the external force can be transmitted to the clutch structure 10, and if the external force reaches a certain degree, the clutch function of the clutch structure 10 can be triggered to take effect, and the moving parts can also move under the action of the external force.

[0036] Please refer to Figure 2 to Figure 6 , the clutch structure 10 of the embodiment of the present application includes a shaft 11, a clutch assembly 12 and a torsional elastic member 13.

[0037] The clutch assembly 12 comprises a first gear 121, a second gear 122 and a mounting seat 123, the first gear 121, the second gear 122 and the mounting seat 123 are rotatably sleeved on the shaft 11, and the mounting seat 123 is connected with the first gear 121.

[0038] That is, the first gear 121, the second gear 122 and the mounting seat 123 can all rotate around the shaft 11, but the mounting seat 123 is connected with the first gear 121 to form an integral whole, and the mounting seat 123 rotates together with the first gear 121.

[0039] The materials of the first gear 121, the second gear 122 and the mounting seat 123 are not limited, and the first gear 121, the second gear 122 and the mounting seat 123 can be selected according to specific performance requirements and cost requirements. Exemplarily, the material of any one of the first gear 121, the second gear 122 and the mounting seat 123 can be metal or plastic.

[0040] The mounting seat 123 can be directly connected with the first gear 121, wherein the mounting seat 123 and the first gear 121 can be a fitting structure or an integral structure.

[0041] The fitting structure means that the mounting seat 123 and the first gear 121 are independent components, and the mounting seat 123 and the first gear 121 are combined together by fitting.

[0042] The integral structure means that the mounting seat 123 and the first gear 121 form an inseparable integral structure by integral molding processing, for example, the mounting seat 123 and the first gear 121 can form an integral structure by injection molding, wherein if the materials of the mounting seat 123 and the first gear 121 are different, for example, the material of the mounting seat 123 is metal and the material of the first gear 121 is plastic, the mounting seat 123 and the first gear 121 can adopt insert injection molding processing to form an insert injection molding structure.

[0043] The mounting seat 123 can also be indirectly connected with the first gear 121, that is, an intermediate connecting piece is arranged between the mounting seat 123 and the first gear 121, and the mounting seat 123 is connected with the first gear 121 through the intermediate connecting piece.

[0044] Please continue to refer to Figure 4 and Figure 5 , the torsional spring 13 comprises a torsional body 13a and a torsional arm 13b, the torsional body 13a is sleeved on the mounting seat 123, and the torsional arm 13b is connected with the second gear 122.

[0045] The torsional spring 13 means an elastic piece capable of producing torsional deformation under the action of torque.

[0046] The torsional elastic member 13 can be a torsional spring or other elastic member as long as it can produce torsional deformation under the action of torque. The torsional body 13a is the main structure for the torsional elastic member 13 to realize torsion. During the torsion of the torsional elastic member 13, the torsional body 13a is mainly twisted, while the torsional arm 13b is mainly used to transmit torque, and the torsional arm 13b can be twisted or not.

[0047] Exemplarily, the torsional body 13a can be a twistable spiral.

[0048] The torsional arm 13b can be directly connected with the second gear 122 or indirectly connected with the second gear 122, which means that an intermediate connecting member is arranged between the torsional elastic member 13 and the second gear 122, and the torsional arm 13b is connected with the second gear 122 through the intermediate connecting member.

[0049] During the torsion of the torsional elastic member 13, the torsional body 13a can be in frictional contact with the mounting seat 123, that is, no matter the torsional elastic member 13 is twisted in the forward direction or the reverse direction, a certain frictional force will be generated between the torsional body 13a and the mounting seat 123.

[0050] During the forward and reverse torsion of the torsional elastic member 13, the torsional body 13a will produce a certain deformation under the action of torque, so that there are two matching states between the torsional elastic member 13 and the mounting seat 123 according to the different torsion directions, one is a loose matching state, and the other is a tight matching state. Specifically, when the torsional elastic member 13 is twisted in the forward direction, the torsion direction of the torsional elastic member 13 is the same as the spiral direction of the torsional body 13a, the spiral angle of the torsional body 13a increases, the torsional body 13a is elongated or has a tendency to be elongated, the frictional force generated between the torsional body 13a and the mounting seat 123 is relatively small, the torsional elastic member 13 and the mounting seat 123 are in a loose matching state, and the torque of the torsional elastic member 13 is relatively small. When the torsional elastic member 13 is twisted in the reverse direction, the torsion direction of the torsional elastic member 13 is opposite to the spiral direction of the torsional body 13a, the spiral angle of the torsional body 13a decreases, the torsional body 13a is shortened or has a tendency to be shortened, the frictional force generated between the torsional body 13a and the mounting seat 123 is relatively large, the torsional elastic member 13 and the mounting seat 123 are in a tight matching state, and the torque of the torsional elastic member 13 is also relatively large.

[0051] The change of the torsion direction of the torsion body 13a corresponds to the change of the relative rotation direction of the first gear 121 and the second gear 122, and for the convenience of description, the relative rotation direction of the first gear 121 and the second gear 122 can be referred to as a first rotation direction and a second rotation direction opposite to the first rotation direction, one of the first rotation direction and the second rotation direction corresponds to the positive torsion direction of the torsion elastic member 13, and the other of the first rotation direction and the second rotation direction corresponds to the reverse torsion direction of the torsion elastic member 13, and the specific correspondence can be determined according to the design requirement. Since the torque of the torsion elastic member 13 is relatively small when the torsion elastic member 13 is positively torsioned, and the torque of the torsion elastic member 13 is relatively large when the torsion elastic member 13 is reversely torsioned, if the first rotation direction corresponds to the positive torsion direction of the torsion elastic member 13, the torque transmitted by the relative rotation of the first gear 121 and the second gear 122 in the first rotation direction is smaller than the torque transmitted by the relative rotation of the first gear 121 and the second gear 122 in the second rotation direction, and if the first rotation direction corresponds to the reverse torsion direction of the torsion elastic member 13, the torque transmitted by the relative rotation of the first gear 121 and the second gear 122 in the first rotation direction is larger than the torque transmitted by the relative rotation of the first gear 121 and the second gear 122 in the second rotation direction, thereby the torque transmitted by the relative rotation of the first gear 121 and the second gear 122 in the first rotation direction is different from the torque transmitted by the relative rotation of the first gear 121 and the second gear 122 in the second rotation direction, and further the clutch structure 10 can transmit different torques in two opposite rotation directions.

[0052] For the transmission device 200, the transmission device 200 can only have the clutch structure 10, or can be a combination of the clutch structure 10 and other transmission components.

[0053] For example, referring to Figure 1 and Figure 2 , the transmission device 200 can include a worm gear 20, a worm shaft 30 and a first transmission gear set 40. The worm gear 20 and the worm shaft 30 are engaged with each other, and the first transmission gear set 40 includes at least one gear. The power output device 100 is in transmission connection with the worm gear 20, Figure 1 and Figure 2 The first transmission gear set 40 shown in the figures is engaged with the worm gear 20 and the second gear 122, respectively, and in other embodiments, the first transmission gear set 40 can also be engaged with the first gear 121.

[0054] For example, referring to Figure 1 and Figure 2 , the transmission device 200 can further include a second transmission gear set 50, and the second transmission gear set 50 includes at least one gear. Figure 1 and Figure 2The second transmission gear set 50 is shown meshing with the first gear 121, and in other embodiments, the second transmission gear set 50 meshes with the second gear 122 if the first transmission gear set 40 meshes with the first gear 121.

[0055] In the example shown, when the power output device 100 is in a non-working state, the power output device 100 does not provide power and cannot drive the worm 30 to rotate, and because the worm gear 20 and the worm 30 have interlocking characteristics, the second gear 122 of the clutch structure 10 can also be well maintained in a stationary state and cannot rotate. Figure 1 Figure 2 When an external force acts on the actuator, the external force is transmitted to the first gear 121 of the clutch structure 10 through the second transmission gear set 50 to drive the first gear 121 to rotate, and the first gear 121 drives the mounting seat 123 to rotate together. Because the torsion arm 13b of the torsion spring 13 is connected to the second gear 122, and the second gear 122 is stationary and does not rotate, when the external force reaches a certain value, the torsion spring 13 is twisted, and the clutch is generated. Because the torsion body 13a of the first gear 121 rubs against the mounting seat 123 when the first gear 121 rotates in the first rotation direction and in the second rotation direction, the torsion spring 13 is loosely fitted with the mounting seat 123 in one of the rotation directions of the first gear 121, and the torsion spring 13 is tightly fitted with the mounting seat 123 in the other opposite rotation direction, therefore, the clutch structure 10 can transmit different torques in two opposite rotation directions.

[0056] In the process of twisting the torsion spring 13, in order to better ensure that the torsion body 13a can achieve reliable frictional contact with the mounting seat 123, it is more preferable that the torsion body 13a can be interference fitted with the mounting seat 123.

[0057] The interference fit described herein refers to the torsion body 13a being interference fitted with the mounting seat 123, that is, in the initial state of the torsion spring 13 being not twisted, the torsion body 13a is in an interference fitted state with the mounting seat 123.

[0058] The interference amount of the torsion body 13a can be adjusted according to specific design needs, but in order to ensure that the torsion body 13a can be well twisted, it is more preferable that the interference amount of the torsion body 13a can be 0.1mm-0.3mm(including the end point value), for example, the interference amount of the torsion body 13a can be 0.1mm, 0.2mm, 0.3mm, etc.

[0059] Please continue to refer to

[0060] Please continue to refer to Figure 4 ​, the torsion body 13a has a first end and a second end opposite to each other along the spiral extension direction, and the torsion arm 13b can be arranged at the first end. In order to enable the torsion body 13a to be smoothly twisted, preferably, the second end of the torsion body 13a can be a free end, that is, the second end of the torsion body 13a is not fixed in any way.

[0061] The number of turns of the torsion body 13a can also be adjusted according to specific design needs, but when the number of turns of the torsion body 13a is too much, there may be a certain risk of clutch failure, therefore, in order to ensure that the torsion body 13a can be smoothly matched with the mounting seat 123 and reduce the risk of clutch failure, preferably, the number of turns of the torsion body 13a can be greater than or equal to 1 turn and less than or equal to 2 turns, for example, the number of turns of the torsion body 13a can be 1 turn, 1.5 turns, 1.7 turns, 2 turns, etc.

[0062] In order to better prevent the torsion body 13a and / or the mounting seat 123 from being scratched or damaged due to friction, the torsion body 13a and the part of the mounting seat 123 at least in frictional contact with the torsion body 13a can adopt the same or similar surface hardness. Specifically, in order to facilitate description, the surface hardness of the torsion body 13a can be referred to as a first hardness, and the surface hardness of the part of the mounting seat 123 at least in frictional contact with the torsion body 13a can be referred to as a second hardness. The hardness difference between the first hardness and the second hardness can be less than or equal to 5HRC (HRC is Rockwell hardness C scale), for example, the hardness difference can be 0, 1HRC, 3HRC, 5HRC, etc.

[0063] In addition, it should be noted that when the hardness difference between the first hardness and the second hardness is not equal to 0, the first hardness can be greater than the second hardness, or the second hardness can be greater than the first hardness.

[0064] In order to facilitate processing and manufacturing, the entire torsion elastic piece 13 can adopt the same material and the same surface hardness, and the entire mounting seat 123 can also adopt the same material and the same surface hardness.

[0065] For example, the torsion elastic piece 13 and the mounting seat 123 can both adopt a metal material, for example, the material of the torsion elastic piece 13 can be SWPB (SWPB is a material grade of high-strength cold-drawn carbon spring steel wire, which belongs to a kind of piano wire), and the material of the mounting seat 123 can be stainless steel.

[0066] In some embodiments, please refer to Figure 4 and Figure 5The first gear 121 can include a first tooth portion 121a, a first mounting portion 121b, and a mounting hole 121c passing through the first mounting portion 121b, the first tooth portion 121a is annularly arranged at the outer circumferential side of the first mounting portion 121b, the mounting seat 123 can include a support column 123a, a seat body 123b located at one end of the support column 123a, and a first shaft hole 122c passing through the support column 123a and the seat body 123b, the seat body 123b is insertedly matched with the mounting hole 121c, the shaft rod 11 is arranged in the first shaft hole 122c, and the torsion body 13a is sleeved on the support column 123a.

[0067] The first tooth portion 121a is a part where the teeth of the first gear 121 are arranged, and the first mounting portion 121b is used for fixing the mounting seat 123, that is, the mounting seat 123 can be directly connected with the first gear 121 by inserting the seat body 123b into the mounting hole 121c of the first mounting portion 121b, wherein the mounting seat 123 and the first gear 121 can be a fitting structure or an insert injection molding structure.

[0068] The mounting hole 121c can play a positioning role on the mounting seat 123, so that the position of the support column 123a can be better ensured without large deviation.

[0069] Exemplarily, referring to Figure 4 to Figure 6 The seat body 123b can include a first segment 123b1 and a second segment 123b2 located at the side of the first segment 123b1 away from the support column 123a, the cross-sectional area of the first segment 123b1 is greater than the cross-sectional area of the support column 123a and the second segment 123b2 (the cross-sectional area refers to the area of the cross section perpendicular to the rotation axis of the mounting seat 123), so that the seat body 123b forms a stepped shape. The mounting hole 121c includes a first sub-hole 121c1 with a cross-sectional size matching the first segment 123b1 and a second sub-hole 121c2 with a cross-sectional size matching the first segment 123b1, the first segment 123b1 is located in the first sub-hole 121c1, and the second segment 123b2 is located in the second sub-hole 121c2.

[0070] That is, the seat body 123b and the mounting hole 121c can be set to a shape-matched stepped shape, so that the positioning effect of the mounting hole 121c on the mounting seat 123 can be improved, and the stability of the mounting seat 123 can be improved for the mounting seat 123 and the first gear 121 using the fitting structure.

[0071] In other embodiments, the seat body 123b can also not be stepped, for example, the seat body 123b can be a constant cross-section structure, or the seat body 123b can also be a variable cross-section structure with the cross-sectional area gradually changing along the extension direction of the rotation axis, and the shape of the mounting hole 121c matches the shape of the seat body 123b.

[0072] Further, referring to Figure 4 to Figure 6 , the first tooth portion 121a and the first mounting portion 121b can surround a receiving groove 121d in communication with the mounting hole 121c, and the support column 123a is located in the receiving groove 121d. That is, the support column 123a and the torsion body 13a can be hidden in the receiving groove 121d, so as to not only protect the torsion body 13a, but also make the overall structure of the clutch structure 10 relatively compact.

[0073] In some embodiments, referring to Figure 4 and Figure 5 , the second gear 122 can include a second tooth portion 122a, a second mounting portion 122b located at one end of the second tooth portion 122a, and a second shaft hole 123c penetrating through the second tooth portion 122a and the second mounting portion 122b, the shaft rod 11 is arranged in the second shaft hole 123c, the second tooth portion 122a is located on the side of the second mounting portion 122b away from the mounting base 123, and the torsion arm 13b abuts against the second mounting portion 122b.

[0074] That is, the torsion arm 13b can be directly connected with the second gear 122 by abutting against the second mounting portion 122b.

[0075] In order to facilitate the installation of the torsion arm 13b, exemplarily, referring to Figure 4 and Figure 5 , the second gear 122 can have a limiting groove 122d, the limiting groove 122d penetrates through the side of the second mounting portion 122b close to the second tooth portion 122a and the side away from the second tooth portion 122a, and the torsion arm 13b is located in the limiting groove 122d.

[0076] Referring to Figure 3 and Figure 5 , the torsion arm 13b can extend out from the side of the limiting groove 122d close to the second tooth portion 122a, and the height of the extension of the torsion arm 13b can be adjusted according to specific design needs, but in order to ensure the stability of the torsion arm 13b, it is more preferred that the height of the extension of the torsion arm 13b (i.e. the vertical distance between the end of the torsion arm 13b and the second mounting portion 122b) is greater than or equal to 0.5 mm.

[0077] Further, referring to Figure 3 to Figure 6 , for the first gear 121 with the receiving groove 121d, the first gear 121 also has a slot 121e in communication with the receiving groove 121d, the slot 121e is located on the side of the receiving groove 121d close to the second gear 122, and the second mounting portion 122b can be located at the slot 121e to shield the slot 121e.

[0078] The second mounting portion 122b can be in gap fit with the slot 121e, and the gap size can be greater than or equal to 0.1 mm.

[0079] The second mounting portion 122b can shield the slot 121e, so that the accommodation groove 121d forms a relatively closed space, thereby not only better protecting the torsion body 13a, but also making the overall structure of the clutch structure 10 more compact.

[0080] Further, the embodiments of the present application also provide a vehicle, which comprises the actuator according to any one of the embodiments of the present application.

[0081] The vehicle according to the embodiments of the present application includes but is not limited to a fuel automobile and a new energy automobile. The fuel automobile refers to an automobile using conventional vehicle fuel such as gasoline and diesel. The new energy automobile includes an automobile using unconventional vehicle fuel and an automobile using conventional vehicle fuel but adopting a new vehicle-mounted power device. The new energy automobile includes but is not limited to a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, a fuel cell electric vehicle, a hydrogen engine automobile, etc.

[0082] The actuator is used in cooperation with a suitable component on the vehicle.

[0083] It should be noted that the actuator according to the embodiments of the present application is not limited to be used on the vehicle, and can also be used on other mechanical structures according to needs.

[0084] Exemplarily, the vehicle comprises a small door assembly, the small door assembly comprises a small door opening pipe and a small door rotatably covered on the small door opening pipe, and the transmission device 200 can be in transmission connection with the small door.

[0085] For a vehicle with a fuel tank, the small door assembly is used to protect the inlet of the fuel tank, and for a vehicle with a charging port, the small door assembly is used to protect the charging port.

[0086] When the power output device 100 is in a working state, the transmission device 200 transmits the power provided by the power output device 100 to the small door, so that the small door can be automatically opened or closed.

[0087] When the power output device 100 is in a non-working state, the small door can be opened or closed by a manual mode. In the process of manually opening or closing the small door, an external force is transmitted to the clutch structure 10 through the small door.

[0088] In the rotation direction in which the small door is closed, the clutch structure 10 of the actuator can provide a relatively small torque, so as to facilitate labor-saving in the process of manually closing the small door, and the relatively small torque can also improve the perception of the closing of the small door, so that the control system of the vehicle can timely feed back the relevant signal when the small door is manually closed or when the clothes or other objects are clamped by the closed small door.

[0089] In the rotation direction in which the small door is opened, the clutch structure 10 of the actuator can provide a relatively large torque, so as to improve the holding force of the small door after the small door is closed, so that the small door is not easy to open, and the safety of the small door is improved.

[0090] The clutch structure 10 of the embodiment of the present application can not only transmit different torques in two opposite rotation directions, but also has a simple structure, so as to effectively reduce the failure rate and production cost of the actuator.

[0091] In addition, the clutch structure in the related art is prone to abnormal noise in the rotation process due to its own structure, and some clutch structures are also prone to be affected by temperature changes, so the overall performance of the clutch structure in the related art is relatively poor.

[0092] The clutch structure 10 of the embodiment of the present application is twisted by the torsion body 13a of the torsion elastic piece 13 on the mounting seat 123, and the torsion body 13a is almost not prone to abnormal noise when it is twisted, so the clutch structure 10 is also not prone to abnormal noise. Meanwhile, the clutch structure 10 of the embodiment of the present application does not use components that are prone to be affected by temperature changes, so the clutch structure 10 is also less affected by temperature changes. Compared with the clutch structure in the related art, the clutch structure 10 of the embodiment of the present application also has better performance.

[0093] In the description of the present application, the description of the terms “in some embodiments”, “in some embodiments”, “in another embodiment”, “in yet another embodiment”, or “exemplary” means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0094] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, and the like made within the principle and technical scope of the present application are included in the protection scope of the present application.

Claims

1. A clutching structure characterized by comprising: The utility model relates to a kind of clutching mechanism, including: Shaft rod; Clutching component, the clutching component includes first gear, second gear and mounting seat, the first gear, the second gear and the mounting seat are rotatably sleeved on the shaft rod, and the mounting seat is connected with the first gear; Torsional elastic member, the torsional elastic member includes torsional body and torsional arm, the torsional body is sleeved on the mounting seat, and the torsional arm is connected with the second gear.

2. The clutching structure according to claim 1, characterized by The torsional body is interference fit with the mounting seat;And / or, The torsional body has first end and second end opposite along helical extension direction, the torsional arm is arranged at the first end, and the second end of the torsional body is free end.

3. The clutching structure according to claim 1 or 2, characterized by The number of turns of the torsional body is greater than or equal to 1 turn, and less than or equal to 2 turns;And / or, The surface hardness of the torsional body is first hardness, the surface hardness of the part of the mounting seat at least friction contact with the torsional body is second hardness, and the hardness difference between the first hardness and the second hardness is less than or equal to 5HRC.

4. The clutching structure according to claim 1 or 2, characterized by The first gear includes first tooth part, first mounting part and mounting hole passing through the first mounting part, the first tooth part is annularly arranged on the outer periphery side of the first mounting part, the mounting seat includes support column, seat body located at one end of the support column and first shaft hole passing through the support column and the seat body;The seat body is inserted into the mounting hole, the shaft rod is arranged in the first shaft hole, and the torsional body is sleeved on the support column;And / or, The second gear includes second tooth part, second mounting part located at one end of the second tooth part and second shaft hole passing through the second tooth part and the second mounting part, the shaft rod is arranged in the second shaft hole, the second tooth part is located on the side of the second mounting part away from the mounting seat, and the torsional arm is in contact with the second mounting part.

5. The clutching structure according to claim 4, characterized by The seat body includes first section and second section located on the side of the first section away from the support column, the cross-sectional area of the first section is greater than the cross-sectional area of the support column and the second section, so that the seat body forms a stepped shape;The mounting hole includes first sub-hole with cross-sectional size matching the first section and second sub-hole with cross-sectional size matching the first section, the first section is located in the first sub-hole, and the second section is located in the second sub-hole.

6. The clutching structure according to claim 4, wherein The first tooth part and the first mounting part surround the containing groove in communication with the mounting hole, and the support column is located in the containing groove.

7. The clutching structure according to claim 6, characterized by The first gear has a slot in communication with the containing groove, the slot is located on the side of the containing groove close to the second gear, the second gear includes the second tooth part, the second mounting part and the second shaft hole, and the second mounting part is located at the slot to shield the slot.

8. The clutching structure according to claim 4, wherein The second gear has a limiting groove, the limiting groove passes through the side of the second mounting part close to the second tooth part and the side away from the second tooth part, and the torsional arm is located in the limiting groove.

9. The clutching structure according to claim 1 or 2, wherein The mounting seat and the first gear are assembled structure or integrally formed structure.

10. An actuator, characterized by The power output device and a transmission device in transmission connection with the power output device, the transmission device comprising the clutch structure according to any one of claims 1-9.

11. A vehicle characterized by comprising: The clutch structure according to any one of claims 1-9 or the actuator according to claim 10.

Images