Synchronous control of multiple locking levers, charging device, and motor vehicle

Abstract

This invention relates to a linkage device, a charging device, and a motor vehicle for synchronously controlling multiple locking levers. The linkage device includes a drive unit, the output end of which is connected to a linkage structure. The linkage structure connects at least two locking levers, and the drive unit drives each locking lever to move synchronously through the linkage structure. This invention designs a linkage structure in which one drive unit synchronously controls two or more actuators, improving control accuracy, effectively reducing manufacturing costs, and decreasing the number of sub-parts.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a linkage device for synchronously controlling multiple locking levers, a charging device, and a motor vehicle. Background Technology

[0002] Pure electric vehicles, a type of new energy vehicle, use a single battery as their energy storage and power source. The battery provides electrical energy to the electric motor, which in turn drives the motor and propels the vehicle. The rechargeable batteries in pure electric vehicles mainly include lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and lithium-ion batteries. These batteries provide power to the electric vehicle, and simultaneously, the pure electric vehicle stores electrical energy through the battery to drive the electric motor and allow the vehicle to run normally. The batteries of pure electric vehicles are primarily charged using a new energy vehicle charging gun.

[0003] In existing charging technologies, when a charging dock has multiple charging ports, such as both DC and AC charging ports, different charging guns can be used for charging. Current solutions all use multiple drive devices to control the locking connection between the multiple charging ports and the charging guns. Each drive device drives a corresponding locking lever to lock the charging gun onto the corresponding charging dock for charging. This approach suffers from problems such as a large number of drive device parts and high manufacturing costs.

[0004] Therefore, there is an urgent need in the field of new energy vehicle technology for a linkage device, charging device, and motor vehicle that can simultaneously control multiple locking rods, and can use a single drive device to control multiple locking rods to lock and connect the charging gun, thereby overcoming the shortcomings of existing technologies and solving problems such as the large number of drive device parts and high manufacturing costs. Summary of the Invention

[0005] The purpose of this invention is to provide a linkage device for synchronously controlling multiple locking rods, a charging device, and a motor vehicle, overcoming the problems existing in the prior art. The linkage device for synchronously controlling multiple locking rods of this invention is designed with a linkage structure, in which one drive device synchronously controls two or more actuators through the linkage structure, thereby improving control accuracy, effectively reducing manufacturing costs, and reducing the number of sub-parts.

[0006] This invention provides a linkage device for synchronously controlling multiple locking levers, including a drive device, the output end of which is connected to a linkage structure. The linkage structure connects at least two locking levers, and the drive device drives each locking lever to move synchronously through the linkage structure.

[0007] In a preferred embodiment, the movement is one or more of the following: stretching, translating, rotating, swaying, bending, and twisting.

[0008] In a preferred embodiment, the locking rod is inserted into the locking hole of the charging gun to fix the charging gun.

[0009] In a preferred embodiment, the shape of the locking rod is one or more of the following: cylinder, frustum, cone, elliptical cylinder, frustum, elliptical cone, polygonal prism, frustum, and polygonal pyramid.

[0010] In a preferred embodiment, the linkage structure connects a first locking rod and a second locking rod, which are arranged at a first spatial angle. The driving device drives the first locking rod and the second locking rod to move synchronously through the linkage structure.

[0011] In a preferred embodiment, the linkage structure includes a drive shaft, which is coaxially arranged with the output end of the drive device. A first end of the drive shaft is fixedly connected to the output end of the drive device. A first connecting rod shaft is provided at the first end of the drive shaft, which is connected to the first locking rod. The drive shaft can drive the first locking rod to extend and retract through the first connecting rod shaft. A second connecting rod shaft is provided at the second end of the drive shaft, which is connected to the second locking rod. The drive shaft can drive the second locking rod to extend and retract through the second connecting rod shaft.

[0012] In a preferred embodiment, the length of the first locking rod is 5mm-55mm, and the length of the second locking rod is 5mm-55mm.

[0013] In a preferred embodiment, the stroke of the first locking rod is 5mm-36mm, and the stroke of the second locking rod is 5mm-36mm.

[0014] In a preferred embodiment, the linkage structure further includes a lever structure, wherein the first connecting rod shaft is rotatably and slidably connected to the first end of the lever structure, and the second end of the lever structure is rotatably and slidably connected to the first locking rod.

[0015] In a preferred embodiment, the lever structure includes a lever with a lever shaft connected to it. The lever shaft is fixedly arranged and its central axis is parallel to the central axis of the transmission shaft. The lever can rotate around the central axis of the lever shaft.

[0016] In a preferred embodiment, the lever is elongated, and a first groove is provided on the side wall of the first end of the lever. The first groove extends inward from the end face of the first end of the lever. The first connecting rod shaft is rotatable and slidably inserted into the first groove. The width direction of the first groove is spatially perpendicular to the central axis of the lever shaft. The width dimension of the first groove is greater than or equal to the outer diameter of the first connecting rod shaft.

[0017] In a preferred embodiment, the bottom of the first groove near the lever shaft is arc-shaped.

[0018] In a preferred embodiment, the first end of the drive shaft is provided with a first connecting plate extending radially outward, and the first connecting plate is provided with the first connecting rod shaft.

[0019] In a preferred embodiment, a keyway is provided on the end face of the first end of the drive shaft, the output end of the drive device matches the keyway, and the drive shaft is connected to the output end of the drive device through the keyway.

[0020] In a preferred embodiment, the first locking rod includes a first locking rod limiting rod, and a first rotating shaft is provided at one end of the first locking rod. The central axis of the first rotating shaft is perpendicular to the central axis of the first locking rod limiting rod, and the first rotating shaft is rotatable and slidably connected to the second end of the lever.

[0021] In a preferred embodiment, a third groove is provided on the side wall of the second end of the lever. The third groove extends inward from the end face of the second end of the lever. The first rotating shaft is rotatably inserted into the third groove. The width direction of the third groove is spatially perpendicular to the central axis of the lever rotating shaft. The width dimension of the third groove is greater than or equal to the outer diameter of the first rotating shaft.

[0022] In a preferred embodiment, the bottom of the third groove near the lever shaft is arc-shaped.

[0023] In a preferred embodiment, one end of the first locking rod limiting rod is connected to a third connecting plate arranged in an L-shape, and the first rotating shaft is disposed on the third connecting plate.

[0024] In a preferred embodiment, the second connecting rod shaft includes a second shaft connected to the side wall of the second end of the transmission shaft, and the second shaft is rotatable and slidably connected to the first end of the second locking rod.

[0025] In a preferred embodiment, the second locking rod includes a second locking rod limiting rod, one end of the second locking rod is provided with a second sliding groove, the central axis of the second rotating shaft is perpendicular to the central axis of the second locking rod limiting rod, the width direction of the second sliding groove is parallel to the central axis of the second locking rod limiting rod, and the width dimension of the second sliding groove is greater than or equal to the outer diameter dimension of the second rotating shaft.

[0026] In a preferred embodiment, the first rotating shaft and the second rotating shaft have the same radius of rotation.

[0027] In a preferred embodiment, the second groove is arranged in the form of a rectangle, parallelogram, polygon, trapezoid, rhombus, or elongated circle.

[0028] In a preferred embodiment, a second locking rod connecting plate is provided at one end of the second locking rod limiting rod, and a second sliding groove is provided on one side of the second locking rod connecting plate; a transition slope is provided between the second locking rod connecting plate and the second locking rod limiting rod.

[0029] In a preferred embodiment, the second end of the drive shaft is provided with a second connecting plate extending radially outward, and the second connecting plate is provided with the second rotating shaft.

[0030] In a preferred embodiment, the output power of the drive device is 0.35W-5.56W.

[0031] In a preferred embodiment, the drive device has an output end, and the output torque of the output end is 2.25 N·mm-9.85 N·mm.

[0032] In a preferred embodiment, the rotation angle of the drive shaft is 15°-92°.

[0033] In a preferred embodiment, the drive shaft is made of either metal or non-metal.

[0034] In a preferred embodiment, the drive shaft is made of carbon steel, pure copper, aluminum-clad zinc, aluminum-clad copper, or zinc alloy.

[0035] In a preferred embodiment, the material of the drive shaft contains one or more of the following: polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, polyterephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, cross-linked polyolefin, ethylene / vinyl acetate copolymer, cross-linked polyethylene, polycarbonate, polysulfone, polyphenylene ether, polyester, phenolic resin, urea-formaldehyde, styrene-acrylonitrile copolymer, polymethyl methacrylate, and polyoxymethylene resin.

[0036] In a preferred embodiment, the drive shaft is made of glass fiber.

[0037] In a preferred embodiment, the first locking bar and the second locking bar are made of one or more of the following: polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, polyterephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, cross-linked polyolefin, ethylene / vinyl acetate copolymer, cross-linked polyethylene, polycarbonate, polysulfone, polyphenylene ether, polyester, phenolic resin, urea-formaldehyde, styrene-acrylonitrile copolymer, polymethyl methacrylate, and polyoxymethylene resin.

[0038] In a preferred embodiment, the first and second rotating shafts have a wear-resistant coating.

[0039] In a preferred embodiment, the wear-resistant coating is made of ceramic, alloy, oxide, or fluoroplastic.

[0040] In a preferred embodiment, the wear-resistant coating includes one or more of the following: gold, silver, nickel, tin, tin-lead alloy, zinc, silver-antimony alloy, palladium, palladium-nickel alloy, graphite silver, hard silver, graphene silver, and silver-gold-zirconium alloy.

[0041] The present invention also provides a charging device, which includes the linkage device for synchronously controlling multiple locking rods as described above.

[0042] The present invention also provides a motor vehicle, the motor vehicle including the linkage device for synchronously controlling multiple locking levers as described above.

[0043] As described above, the linkage device for synchronously controlling multiple locking levers, the charging device, and the motor vehicle of the present invention have the following beneficial effects:

[0044] The linkage device for synchronously controlling multiple locking rods of the present invention is provided with a linkage structure, which enables one driving device to synchronously control two or more actuators through the linkage structure, effectively reducing manufacturing costs, reducing the number of sub-parts, and reducing assembly process difficulty and cost.

[0045] The linkage structure of this invention utilizes the principles of limiting and sliding grooves, and uses levers to change the direction of force, thereby driving the synchronous extension and retraction of multiple locking rods;

[0046] The linkage structure of this invention has simple components, is easy to manufacture, and is conducive to widespread use. Attached Figure Description

[0047] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0048] in:

[0049] Figure 1 : This is a schematic diagram of the linkage device for synchronously controlling multiple locking rods according to the present invention.

[0050] Figure 2 : This is a schematic diagram of the transmission shaft of the present invention.

[0051] Figure 3 : A schematic diagram of the end face of the first end of the transmission shaft of the present invention.

[0052] Figure 4 : This is a schematic diagram of the lever structure of the present invention.

[0053] Figure 5 : This is a schematic diagram of the structure of the first locking rod of the present invention.

[0054] Figure 6 : This is a schematic diagram of the structure of the second locking rod of the present invention.

[0055] In the picture:

[0056] 100. A linkage device for synchronously controlling multiple locking levers;

[0057] 1. Drive unit;

[0058] 2. Linkage structure; 20. Drive shaft; 201. First connecting plate; 202. Second connecting plate; 203. Keyway; 21. First connecting rod shaft; 22. Second shaft; 231. Lever; 232. Lever shaft; 233. First slide groove; 234. Third slide groove;

[0059] 3. First locking rod; 31. First locking rod limiting rod; 32. First rotating shaft; 33. Third connecting plate;

[0060] 4. Second locking rod; 41. Second locking rod limiting rod; 42. Second sliding groove; 43. Second locking rod connecting buckle plate;

[0061] 5. Electronic lock. Detailed Implementation

[0062] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0063] The specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "linked" should be interpreted broadly; for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0065] like Figures 1 to 6 As shown, this invention provides a linkage device 100 for synchronously controlling multiple locking levers, including a drive device 1. The output end of the drive device 1 is connected to a linkage structure 2, which connects to at least two locking levers. Each locking lever is used to connect to a charging gun head. The drive device 1 drives each locking lever to move synchronously through the linkage structure 2. The drive device includes, but is not limited to, a motor or an electronic lock. The linkage structure 2 is connected to the output end of the motor or electronic lock to realize torque transmission.

[0066] Furthermore, the movement can be one or more of the following: extension, translation, rotation, swaying, bending, and twisting. The linkage structure 2 drives at least two locking levers to move; the mode of movement can be selected according to the actual usage environment, as long as multiple locking levers can be controlled simultaneously.

[0067] Furthermore, the locking rod is inserted into the locking hole of the charging gun (existing technology, not shown in the figure) to fix the charging gun.

[0068] One important objective of this invention is to lock the charging gun. Each locking rod can be inserted into the locking hole of a different charging gun to lock it, preventing the charging gun from falling off the charging socket during the charging process and making it impossible for the car to charge. In addition, a detached, electrified charging gun also poses a risk of electric shock and injury.

[0069] In one specific embodiment, the shape of the locking rod is one or more of the following: cylinder, frustum, cone, elliptical cylinder, frustum, elliptical cone, polygonal prism, frustum, and pyramid. In actual use, the shape can be selected according to the shape of the charging gun's locking hole.

[0070] In one specific embodiment, a first locking rod 3 and a second locking rod 4 are connected to the linkage structure 2. The first locking rod 3 and the second locking rod 4 are arranged at a first spatial angle (this angle can be determined according to actual usage requirements; in this practical embodiment, they are arranged perpendicularly in space). The first locking rod 3 is used to connect to the first charging gun head (existing technology, any existing charging structure can be used), and the second locking rod 4 is used to connect to the second charging gun head (existing technology, any existing charging structure can be used). The driving device 1 drives the first locking rod 3 and the second locking rod 4 to move synchronously through the linkage structure 2. In this embodiment, the first locking rod 3 is an AC locking rod, the first charging gun head is an AC charging gun head, the second locking rod 4 is a DC locking rod, and the second charging gun head is a DC charging gun head. The motor drives the first locking rod 3 and the second locking rod 4 to move synchronously through the linkage structure 2.

[0071] In practical applications, the linkage device 100 for synchronously controlling multiple locking rods of the present invention is disposed inside a hollow housing (not shown in the figure).

[0072] In one specific embodiment, the first locking rod 3 and the second locking rod 4 are actuators. As two actuators, the first locking rod 3 and the second locking rod 4 extend or retract synchronously under the drive of the output end of the drive device 1, acting as a latch. One drive device 1 synchronously controls two or more actuators through the linkage structure 2, effectively reducing manufacturing costs and the number of sub-parts.

[0073] In the linkage device for synchronously controlling multiple locking rods of the present invention, a linkage structure 2 is provided, which enables one driving device 1 to synchronously control two actuators through the linkage structure 2, effectively reducing manufacturing costs, reducing the number of sub-parts, and reducing assembly process difficulty and cost.

[0074] Furthermore, such as Figure 1 , Figure 2As shown, the linkage structure 2 includes a drive shaft 20, which is coaxially arranged with the output end of the drive device 1. The first end of the drive shaft 20 is fixedly connected to the output end of the drive device 1. A first connecting rod shaft 21 is provided at the first end of the drive shaft 20, which is connected to the first locking rod 3. The drive shaft 20 can drive the first locking rod 3 to extend and retract through the first connecting rod shaft 21. A second connecting rod shaft is provided at the second end of the drive shaft 20, which is connected to the second locking rod 4. The drive shaft 20 can drive the second locking rod 4 to extend and retract through the second connecting rod shaft. The linkage structure 2 drives the synchronous extension and retraction of the first locking rod 3 and the second locking rod 4.

[0075] Furthermore, the length of the first locking rod 3 is 5mm-55mm, and the length of the second locking rod 4 is 5mm-55mm.

[0076] If the first locking rod 3 and the second locking rod 4 are too short, they cannot complete the locking work; if they are too long, they will interfere with the charging gun and produce abnormal noise. Therefore, the inventors selected the first locking rod 3 and the second locking rod 4 of different lengths for testing. Failure to lock is considered unqualified, and abnormal noise is considered unqualified. The test results are shown in Table 1.

[0077] Table 1: The Influence of Different Locking Bar Lengths on Locking Operation

[0078] Lock bar length (mm) 4 5 8 11 16 21 28 39 47 52 55 56 Can it be locked? no able able able able able able able able able able able Is there any unusual noise? no no no no no no no no no no no yes

[0079] As shown in Table 1, when the length of the locking rod is less than 5mm, the locking rod cannot lock the charging gun. When the length of the locking rod is greater than 55mm, the locking rod will interfere with the charging gun and produce abnormal noise. Therefore, the inventors chose the length of the first locking rod 3 to be 5mm-55mm and the length of the second locking rod 4 to be 5mm-55mm.

[0080] Furthermore, the maximum travel of the first locking lever is 5mm-36mm, and the travel of the second locking lever is 5mm-36mm.

[0081] Similarly, if the maximum stroke of the first locking rod 3 and the second locking rod 4 is too short, they cannot lock the charging gun. If the stroke is too long, they will interfere with the charging gun and produce abnormal noise. Therefore, the inventors selected the first locking rod 3 and the second locking rod 4 with different maximum strokes for testing. Failure to lock is considered unqualified, and abnormal noise is considered unqualified. The test results are shown in Table 2.

[0082] Table 2: The Influence of Different Maximum Strokes of Locking Rods on Locking Operation

[0083] Maximum travel (mm) 4 5 8 10 12 15 19 23 28 32 36 38 Can it be locked? no able able able able able able able able able able able Is there any unusual noise? no no no no no no no no no no no yes

[0084] As shown in Table 2, when the maximum stroke of the locking rod is less than 5mm, it cannot lock. When the maximum stroke of the locking rod is greater than 36mm, abnormal noise will occur. Therefore, the inventors chose the maximum stroke of the first locking rod 3 to be 5mm-36mm and the maximum stroke of the second locking rod 4 to be 5mm-36mm.

[0085] Furthermore, such as Figure 2 As shown, the first connecting rod shaft 21 is connected to the side wall of the first end of the transmission shaft 20. The central axis of the first connecting rod shaft 21 can be parallel to the central axis of the transmission shaft 20 or at other angles. The first connecting rod shaft 21 can rotate around its central axis with the transmission shaft 20. The linkage structure also includes a lever structure. The first connecting rod shaft 21 can be rotatably and slidably connected to the first end of the lever structure. The second end of the lever structure can be rotatably and slidably connected to the first locking rod 3.

[0086] Furthermore, such as Figure 1 , Figure 4 As shown, the lever structure includes a lever 231, on which a lever shaft 232 is connected. The lever shaft 232 is fixedly set and its central axis is parallel to the central axis of the transmission shaft 20. The lever 231 can rotate around the central axis of the lever shaft 232 (the lever 231 can rotate around the lever shaft 232 as the center). The rotation direction of the lever 231 is opposite to the rotation direction of the transmission shaft 20.

[0087] Furthermore, such as Figure 1 , Figure 4 As shown, lever 231 is elongated, and a first groove 233 is provided on the side wall of the first end of the lever. The first groove 233 extends inward from the end face of the first end of the lever 231. The first connecting rod shaft 21 is rotatable and slidably inserted into the first groove 233. The width direction of the first groove 233 is spatially perpendicular to the central axis of the lever shaft 232. The width dimension of the first groove 233 is greater than or equal to the outer diameter of the first connecting rod shaft 21.

[0088] Furthermore, the bottom of the first slide groove 233 near the lever shaft 232 is arc-shaped. The outline shape of the first slide groove 233 can be adjusted according to actual needs.

[0089] Furthermore, the end face of the first end of lever 231 is set as a plane.

[0090] The outline of lever 231 and the installation position of lever shaft 232 can be adjusted according to actual application. The outer diameter of first connecting rod shaft 21 and the width and length dimensions of first slide groove 233 can be determined according to actual needs, and the application range is wide.

[0091] Furthermore, such as Figure 2As shown, the first end of the drive shaft 20 is provided with a first connecting plate 201 extending radially outward, and a first connecting rod shaft 21 is provided on the first connecting plate 201.

[0092] Furthermore, such as Figure 3 As shown, a keyway 203 (square groove) is provided on the end face of the first end of the drive shaft 20. The output end of the drive device 1 matches the keyway 203, and the drive shaft 20 is connected to the output end of the drive device 1 through the keyway 203.

[0093] Furthermore, such as Figure 1 , Figure 5 As shown, the first locking rod 3 includes a first locking rod limiting rod 31. A first rotating shaft 32 is provided at one end of the first locking rod 3. The central axis of the first rotating shaft 32 is perpendicular to the central axis of the first locking rod limiting rod 31. The first rotating shaft 32 can rotate and slide to the second end of the lever.

[0094] Furthermore, such as Figure 5 As shown, a third groove 234 is provided on the side wall of the second end of the lever 231. The third groove 234 extends inward from the end face of the second end of the lever 231. The first rotating shaft 32 is rotatably inserted into the third groove 234. The width direction of the third groove 234 is spatially perpendicular to the central axis of the lever rotating shaft 232. The width dimension of the third groove 234 is larger than the outer diameter of the first rotating shaft. The connection between the lever 231 and the first connecting rod rotating shaft 21 on the transmission shaft 20, and the connection between the lever 231 and the first rotating shaft 32 on the first locking rod 3, change the direction of force through the lever, ultimately converting the rotation of the first rotating shaft 32 into the extension and retraction of the first locking rod limiting rod 31.

[0095] Furthermore, the bottom of the third groove 234 near the lever shaft 232 is set in an arc shape.

[0096] Furthermore, such as Figure 5 As shown, one end of the first locking rod limiting rod 31 is connected to a third connecting plate 33 arranged in an L-shape, and a first rotating shaft 32 is provided on the third connecting plate 33. The outline of the third connecting plate 33 can be adjusted according to the actual application.

[0097] Furthermore, such as Figure 1 , Figure 2 As shown, the second connecting rod shaft includes a second shaft 22, which is connected to the side wall of the second end of the transmission shaft 20. The central axis of the second shaft 22 is parallel to the central axis of the transmission shaft 20. The second shaft 22 can rotate around its central axis with the transmission shaft 20. The second shaft 22 can rotate and slide to the first end of the second locking rod 4.

[0098] Furthermore, such as Figure 6As shown, the second locking rod 4 includes a second locking rod limiting rod 41. A second sliding groove 42 is provided at one end of the second locking rod 4. The central axis of the second rotating shaft 22 is perpendicular to the central axis of the second locking rod limiting rod 41. The second rotating shaft 22 is rotatable and slidably connected within the second sliding groove 42. The width direction of the second sliding groove 42 is parallel to the central axis of the second locking rod limiting rod 41, and the width dimension of the second sliding groove 42 is greater than or equal to the outer diameter of the second rotating shaft 22. The connection between the second locking rod 4 and the second rotating shaft 22 converts the rotation of the second rotating shaft 22 into the extension and retraction of the second locking rod limiting rod 41.

[0099] Furthermore, the first rotating shaft 32 and the second rotating shaft 22 have the same radius of rotation. The same radius of rotation allows the first locking lever 3 and the second locking lever 4 to lock synchronously.

[0100] Furthermore, the second groove 42 is arranged in the form of a rectangle, parallelogram, polygon, trapezoid, rhombus or elongated circle.

[0101] Furthermore, such as Figure 6 As shown, a second locking rod connecting plate 43 is provided at one end of the second locking rod limiting rod 41, and a second sliding groove 42 is provided on one side of the second locking rod connecting plate 43; a transition slope is provided between the second locking rod connecting plate 43 and the second locking rod limiting rod 41.

[0102] Furthermore, such as Figure 2 As shown, the second end of the drive shaft 20 is provided with a second connecting plate 202 extending radially outward, and a second rotating shaft 22 is provided on the second connecting plate 202.

[0103] The locking rod diameters of the first locking rod limiting rod 31 and the second locking rod limiting rod 41 are determined according to actual needs, and the settings of each hinge point and each lever arm in the linkage structure 2 are determined according to actual needs.

[0104] The working process of the linkage device for synchronously controlling multiple locking rods of the present invention is as follows:

[0105] The torque is input by the drive device 1 (motor), and the transmission shaft 20 is connected to the output end of the drive device 1 through the keyway 203. The output end of the drive device 1 drives the transmission shaft 20 to rotate through the keyway 203.

[0106] The first connecting rod shaft 21 and the second shaft 22 rotate around the central axis of the transmission shaft 20.

[0107] The first connecting rod shaft 21 is rotatably inserted into the first slide groove 233. The first connecting rod shaft 21 drives the lever 231 to rotate around the central axis of the lever shaft 232. The rotation direction of the lever 231 is opposite to the rotation direction of the first connecting rod shaft 21.

[0108] The first rotating shaft 32 on the first lock rod 3 is rotatably inserted through the third sliding groove 234. The rotation of the lever 231 drives the first lock rod limiting rod 31 to telescopically move (move along the central axis direction of the first lock rod limiting rod 31), thereby completing the extension or contraction of the first lock rod 3.

[0109] The second rotating shaft 22 is rotatably and slidably inserted through the second sliding groove 42. The rotation of the second rotating shaft 22 drives the second lock rod limiting rod 41 to telescopically move (move along the central axis direction of the second lock rod limiting rod 41), thereby completing the extension or contraction of the second lock rod 4.

[0110] In some embodiments, the output power of the driving device 1 is 0.35W - 5.56W.

[0111] The output power of the driving device 1 determines the working speed of the linkage device. The higher the power, the faster the linkage device completes the work. The lower the power, the slower the linkage device completes the work, and even the rotational torque of the transmission shaft 20 is insufficient to complete the locking work of the first lock rod 3 and the second lock rod 4. To test the influence of the output power on the work of the linkage device, the inventor conducted relevant tests. The test method is to select driving devices 1 with different output powers, the linkage device structures are the same, each driving device 1 works continuously for 1 minute, and record the number of times the linkage device completes the work. If the number of times is greater than or equal to 40, it is qualified; if it is less than 40, it is unqualified. If abnormal noise occurs during the work of the linkage device, it is also regarded as unqualified. The results are shown in Table 3.

[0112] Table 3: Influence of Different Output Powers on the Speed and Abnormal Noise of the Linkage Device

[0113] Power (W) 0.3 0.35 0.50 0.80 1.13 1.22 1.39 1.75 2.41 3.68 4.86 5.56 5.60 Number of times completed 38 40 47 52 55 58 61 63 65 66 70 71 71 Is there any unusual noise? no no no no no no no no no no no no yes

[0114] As shown in Table 3, when the output power of the driving device 1 is less than 0.35W, the number of times the linkage device completes the switch within 1 minute is less than 40 times, and the speed is too slow to be qualified. Therefore, the inventor selects the minimum power of the driving device 1 as 0.35W; when the output power of the driving device 1 is greater than 5.56W, due to the influence of the overall design, the speed of the linkage device enters a bottleneck period and there is no obvious improvement. At the same time, abnormal noise will also occur. Therefore, the output power of the driving device 1 selected by the inventor is 0.35W - 5.56W, specifically it can be 0.9W, 0.96W, 1W, 1.08W, etc. [[ID=第十九]] The [[ID=第二十]]

[0115] In some embodiments, the driving device 1 has an output end, and the output torque of the output end is 2.25N·mm - 9.85N·mm.

[0116] The output torque of the drive device 1 determines the magnitude of the force applied to the transmission shaft 20. If the torque is insufficient, the first locking rod 3 and the second locking rod 4 cannot be driven to work. To verify the effect of drive devices 1 with different output torques on the switching of the linkage device, the inventors conducted relevant tests. The test method involved selecting drive devices 1 with different output torques, while keeping other structures of the linkage device the same. Drive devices 1 that could normally drive the transmission shaft 20 were considered qualified; otherwise, they were considered unqualified. If the linkage device made abnormal noise during operation, it was also considered unqualified. The test results are shown in Table 4.

[0117] Table 4: Whether drive device 1 with different output torques can drive transmission shaft 20 normally.

[0118] Torque (N·mm) 2.15 2.25 3.0 3.6 3.9 4.5 5. 5.5 6 7.4 8.6 9.85 10 Can work no able able able able able able able able able able able able Is there any unusual noise? no no no no no no no no no no no no yes

[0119] As shown in Table 4, when the output torque of drive device 1 is less than 2.25 N·mm, it cannot drive the transmission shaft 20. Therefore, the inventors selected a minimum output torque of 2.25 N·mm for drive device 1. While it can still drive the transmission shaft 20 when the output torque is greater than 9.85 N·mm, the excessive output torque will cause abnormal noise during operation of the linkage device. Therefore, the inventors selected an output torque of 2.25 N·mm–9.85 N·mm for drive device 1. Specifically, it can be 3.5 N·mm, 4 N·mm, etc.

[0120] In some embodiments, the rotation angle of the drive shaft 20 is 15°-92°.

[0121] The rotation angle of the drive shaft 20 also determines the stroke of the first locking rod 3 and the second locking rod 4. When the rotation angle of the drive shaft 20 is too small, the stroke of the first locking rod 3 and the second locking rod 4 is insufficient, and the locking work cannot be completed. When the rotation angle of the drive shaft 20 is too large, after the first locking rod 3 and the second locking rod 4 have reached the working position, the drive shaft 20 is still outputting rotational force, which can easily lead to damage to the linkage device. In order to verify the influence of the rotation angle of the drive shaft 20 on the linkage device, the inventors conducted a test. The test method was to prepare drive devices 1 with different rotation angles of the drive shaft 20, while the linkage device had the same structure in other aspects. The device was considered qualified if the stroke of the first locking rod 3 and the second locking rod 4 could complete the locking action; otherwise, it was considered unqualified. A larger rotation angle means a larger stroke of the first locking rod 3 and the second locking rod 4, which requires increasing the size of each connecting component. This can easily lead to contact with other components in the linkage device, thus affecting the use of the linkage device. The rotation angle of the drive shaft 20 in this case is also considered unqualified. The test results are shown in Table 5.

[0122] Table 5: The Influence of Different Rotation Angle Ranges of Drive Shafts on the Function of the Linkage Device and Whether They Contact Other Components

[0123] Rotation angle 14 15 28 36 47 55 61 70 78 83 89 92 93 Can it be locked? no yes yes yes yes yes yes yes yes yes yes yes yes Whether to touch no no no no no no no no no no no no yes

[0124] As shown in Table 5, when the rotation angle of the drive shaft 20 is less than 15°, the stroke of the first locking rod 3 and the second locking rod 4 is insufficient to complete the locking operation. When the rotation angle of the drive shaft 20 is greater than 92°, unnecessary contact will occur between the components of the linkage device, resulting in abnormal noise, which is also unacceptable. Therefore, the inventors selected a rotation angle of 15°-92° at the output end of the drive shaft 20. Specifically, it can be 50°, 60°, 70°, or 80°, etc.

[0125] Furthermore, the drive shaft 20 may be made of metal or non-metal.

[0126] Furthermore, the drive shaft 20 is made of materials including carbon steel, pure copper, aluminum-clad zinc, aluminum-clad copper, or zinc alloy. These metals or alloys have better strength and toughness, and are better suited to the needs of the drive shaft.

[0127] Furthermore, the material of the drive shaft 20 includes one or more of the following: polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, polyterephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, cross-linked polyolefin, ethylene / vinyl acetate copolymer, cross-linked polyethylene, polycarbonate, polysulfone, polyphenylene ether, polyester, phenolic resin, urea-formaldehyde, styrene-acrylonitrile copolymer, polymethyl methacrylate, and polyoxymethylene resin.

[0128] Taking polyoxymethylene (POM), polyester, polycarbonate, polyamide, polyphenylene sulfide (PPS), and polytetrafluoroethylene (PTFE) as examples: POM is a smooth, glossy, hard, and dense material, pale yellow or white in color, and can be used for a long time in a temperature range of -40 to 100℃. Its wear resistance and self-lubricating properties are also superior to most engineering plastics, and it has good oil resistance and peroxide resistance.

[0129] Polyesters are generally polymerized from terephthalic acid and butanediol. The chain segments include hard segments and soft segments, and they are thermoplastic elastomers.

[0130] Polycarbonate has high strength and elastic modulus, high impact strength, good fatigue resistance, good dimensional stability, low creep, high transparency, and free dyeability.

[0131] Polyamide is non-toxic, lightweight, and has excellent mechanical strength, as well as good wear resistance and corrosion resistance. It can be used to replace metals such as copper in the manufacture of bearings, gears, pump impellers and other parts in industries such as machinery, chemical, instrumentation and automobiles.

[0132] Polyphenylene sulfide (PPS) is a new type of high-performance thermoplastic resin with advantages such as high mechanical strength, high temperature resistance, chemical resistance, flame retardancy, good thermal stability, and excellent electrical properties.

[0133] Polytetrafluoroethylene (PTFE) is resistant to acids, alkalis, and various organic solvents, and is virtually insoluble in all solvents. PTFE also exhibits high-temperature resistance.

[0134] Furthermore, the drive shaft 20 is made of glass fiber. Glass fiber makes the drive shaft 20 stronger and gives it a certain degree of smoothness.

[0135] Furthermore, the first locking lever 3 and the second locking lever 4 are made of one or more of the following materials: polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, polyterephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, cross-linked polyolefin, ethylene / vinyl acetate copolymer, cross-linked polyethylene, polycarbonate, polysulfone, polyphenylene ether, polyester, phenolic resin, urea-formaldehyde, styrene-acrylonitrile copolymer, polymethyl methacrylate, and polyoxymethylene resin.

[0136] Taking polyoxymethylene (POM), polycarbonate (PC), and polyamide as examples: POM is a smooth, glossy, hard, and dense material, pale yellow or white in color, and can be used for a long time in a temperature range of -40 to 100℃. Its wear resistance and self-lubricating properties are also superior to most engineering plastics, and it has good oil resistance and peroxide resistance.

[0137] Polycarbonate is colorless and transparent, heat-resistant, impact-resistant, and flame-retardant (BI grade). It exhibits good mechanical properties within normal operating temperatures. Compared to polymethyl methacrylate (PMMA), which has similar properties, polycarbonate has better impact resistance, a higher refractive index, better processability, and high-level flame retardancy without the need for additives.

[0138] Polyamide, being non-toxic, lightweight, and possessing excellent mechanical strength, as well as good wear resistance and corrosion resistance, can replace metals such as copper in the manufacture of bearings, gears, pump impellers, and other parts in industries such as machinery, chemicals, instrumentation, and automobiles. The first locking rod 3 and the second locking rod 4 require high strength, high temperature resistance, and high wear resistance. Therefore, polycarbonate or polyamide is the preferred material for the first locking rod 3 and the second locking rod 4.

[0139] In a specific embodiment, the first rotating shaft 32 and the second rotating shaft 22 have wear-resistant coatings.

[0140] Furthermore, the wear-resistant layer may be made of ceramics, alloys, oxides, or fluoroplastics.

[0141] In a preferred embodiment, the wear-resistant coating includes one or more of the following: gold, silver, nickel, tin, tin-lead alloy, zinc, silver-antimony alloy, palladium, palladium-nickel alloy, graphite silver, hard silver, graphene silver, and silver-gold-zirconium alloy.

[0142] The corrosion resistance time test in Table 6 involves placing the first shaft 32 and the second shaft 22 into a salt spray test chamber and spraying salt spray onto various locations of both shafts. Every 20 hours, the shafts are removed, cleaned, and the surface corrosion is observed; this constitutes one cycle. The test continues until the corroded area on the surfaces of the first shaft 32 and the second shaft 22 exceeds 10% of the total area. The number of cycles at that point is recorded. In this embodiment, a cycle count less than 80 cycles is considered unacceptable. The insertion / removal count in Table 6 involves fixing the first or second shaft to the test bench and observing the wear-resistant coating damage on the first shaft 32 and the second shaft 22 after every 100 insertion / removal cycles. The test stops when scratches appear, exposing the original material of the first or second shaft, and the insertion / removal count is recorded. In this embodiment, a insertion / removal count less than 8000 cycles is considered unacceptable.

[0143] Table 6: Influence of different coating materials on the insertion and removal cycles and corrosion resistance of the first and second shafts

[0144]

[0145]

[0146] As can be seen from Table 6 above, when the plating material is selected as gold, silver, silver-antimony alloy, palladium, palladium-nickel alloy, graphite silver, hard silver, graphene silver, and silver-gold-zirconium alloy, the experimental results exceed the standard values ​​by a significant margin, indicating relatively stable performance. When the plating material is selected as nickel, tin, tin-lead alloy, or zinc, the experimental results also meet the requirements. Therefore, the inventors selected one or more of the following plating materials: gold, silver, nickel, tin, tin-lead alloy, zinc, hard silver-antimony alloy, palladium, palladium-nickel alloy, graphite silver, graphene silver, and silver-gold-zirconium alloy.

[0147] The present invention also provides a charging device, which includes the above-mentioned linkage device for synchronously controlling multiple locking rods.

[0148] The present invention also provides a motor vehicle, which includes the above-mentioned linkage device for synchronously controlling multiple locking levers.

[0149] As described above, the linkage device for synchronously controlling multiple locking levers, the charging device, and the motor vehicle of the present invention have the following beneficial effects:

[0150] The linkage device for synchronously controlling multiple locking rods of the present invention is provided with a linkage structure, which enables one driving device to synchronously control two or more actuators through the linkage structure, effectively reducing manufacturing costs, reducing the number of sub-parts, and reducing assembly process difficulty and cost.

[0151] The linkage structure of this invention utilizes the principles of limiting and sliding grooves, and uses levers to change the direction of force, thereby driving the synchronous movement of multiple locking rods;

[0152] The linkage structure of this invention has simple components, is easy to manufacture, and is conducive to widespread use.

[0153] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A linkage device for synchronously controlling multiple locking levers, characterized in that, The device includes a drive unit, the output end of which is connected to a linkage structure. The linkage structure connects at least two locking rods, and the drive unit drives each locking rod to move synchronously through the linkage structure. The linkage structure connects a first locking rod and a second locking rod, which are arranged at a first spatial angle. The driving device drives the first locking rod and the second locking rod to move synchronously through the linkage structure. The linkage structure includes a drive shaft, which is coaxially arranged with the output end of the drive device. A first end of the drive shaft is fixedly connected to the output end of the drive device. A first connecting rod shaft is provided at the first end of the drive shaft, connecting to a first locking rod. The drive shaft can drive the first locking rod to extend or retract via the first connecting rod shaft. A second connecting rod shaft is provided at the second end of the drive shaft, connecting to a second locking rod. The drive shaft can drive the second locking rod to extend or retract via the second connecting rod shaft. The linkage structure also includes a lever structure, wherein the first connecting rod shaft is rotatable and slidably connected to the first end of the lever structure, and the second end of the lever structure is rotatable and slidably connected to the first locking rod; The lever structure includes a lever, on which a lever pivot is connected. The lever pivot is fixedly arranged and its central axis is parallel to the central axis of the transmission shaft. The lever can rotate around the central axis of the lever pivot. The lever is elongated and has a first groove on the side wall of its first end. The first groove extends inward from the end face of the first end of the lever. The first connecting rod shaft is rotatable and slidably inserted into the first groove. The width direction of the first groove is spatially perpendicular to the central axis of the lever shaft. The width dimension of the first groove is greater than or equal to the outer diameter of the first connecting rod shaft.

2. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, The locking rod is inserted into the locking hole of the charging gun to fix the charging gun.

3. The linkage device for synchronously controlling multiple locking levers as described in claim 1, characterized in that, The shape of the locking rod is one of the following: cylinder, frustum, cone, elliptical cylinder, frustum, elliptical cone, polygonal prism, frustum, and polygonal pyramid.

4. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, The length of the first locking rod is 5mm-55mm, and the length of the second locking rod is 5mm-55mm.

5. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, The first locking rod has a travel of 5mm-36mm, and the second locking rod has a travel of 5mm-36mm.

6. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, The bottom of the first groove near the lever shaft is arc-shaped.

7. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, The first end of the drive shaft is provided with a first connecting plate extending radially outward, and the first connecting plate is provided with the first connecting rod shaft.

8. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, A keyway is provided on the end face of the first end of the drive shaft, and the output end of the drive device matches the keyway. The drive shaft is connected to the output end of the drive device through the keyway.

9. The linkage device for synchronously controlling multiple locking levers as described in claim 1, characterized in that, The first locking rod includes a first locking rod limiting rod, and a first rotating shaft is provided at one end of the first locking rod. The central axis of the first rotating shaft is perpendicular to the central axis of the first locking rod limiting rod. The first rotating shaft is rotatable and slidably connected to the second end of the lever.

10. The linkage device for synchronously controlling multiple locking rods as described in claim 9, characterized in that, A third groove is provided on the side wall of the second end of the lever. The third groove extends inward from the end face of the second end of the lever. The first rotating shaft is rotatably inserted into the third groove. The width direction of the third groove is spatially perpendicular to the central axis of the lever rotating shaft. The width dimension of the third groove is greater than or equal to the outer diameter of the first rotating shaft.

11. The linkage device for synchronously controlling multiple locking levers as described in claim 10, characterized in that, The bottom of the third groove near the lever shaft is arc-shaped.

12. The linkage device for synchronously controlling multiple locking levers as described in claim 9, characterized in that, One end of the first locking rod limiting rod is connected to a third connecting plate arranged in an L-shape, and the first rotating shaft is arranged on the third connecting plate.

13. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, One end of the first locking rod is provided with a first rotating shaft, and the second connecting rod rotating shaft includes a second rotating shaft. The second rotating shaft is connected to the side wall of the second end of the transmission shaft, and the second rotating shaft is rotatable and slidably connected to the first end of the second locking rod.

14. The linkage device for synchronously controlling multiple locking levers as described in claim 13, characterized in that, The second locking rod includes a second locking rod limiting rod. A second sliding groove is provided at one end of the second locking rod. The central axis of the second rotating shaft is perpendicular to the central axis of the second locking rod limiting rod. The width direction of the second sliding groove is parallel to the central axis of the second locking rod limiting rod. The width dimension of the second sliding groove is greater than or equal to the outer diameter dimension of the second rotating shaft.

15. The linkage device for synchronously controlling multiple locking levers as described in claim 14, characterized in that, The first and second rotating shafts have the same radius of rotation.

16. The linkage device for synchronously controlling multiple locking levers as described in claim 14, characterized in that, The second groove is configured in one of the following shapes: rectangular, parallelogram, trapezoidal, rhomboid, or elongated circle.

17. The linkage device for synchronously controlling multiple locking levers as described in claim 14, characterized in that, A second locking rod connecting plate is provided at one end of the second locking rod limiting rod, and a second sliding groove is provided on one side of the second locking rod connecting plate; a transition slope is provided between the second locking rod connecting plate and the second locking rod limiting rod.

18. The linkage device for synchronously controlling multiple locking levers as described in claim 13, characterized in that, The second end of the drive shaft is provided with a second connecting plate extending radially outward, and the second connecting plate is provided with the second rotating shaft.

19. The linkage device for synchronously controlling multiple locking levers as described in claim 1, characterized in that, The output power of the drive device is 0.35W-5.56W.

20. The linkage device for synchronously controlling multiple locking levers as described in claim 1, characterized in that, The drive device has an output end, and the output torque of the output end is 2.25 N·mm-9.85 N·mm.

21. The linkage device for synchronously controlling multiple locking levers as described in claim 1, characterized in that, The rotation angle of the drive shaft is 15°-92°.

22. The linkage device for synchronously controlling multiple locking rods as described in claim 1, characterized in that, The drive shaft is made of either metal or non-metal.

23. The linkage device for synchronously controlling multiple locking levers as described in claim 22, characterized in that, The drive shaft is made of one of the following materials: carbon steel, pure copper, aluminum-coated zinc, aluminum-coated copper, or zinc alloy.

24. The linkage device for synchronously controlling multiple locking levers as described in claim 22, characterized in that, The transmission shaft is made of one of the following materials: polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, polyterephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, cross-linked polyolefin, ethylene / vinyl acetate copolymer, cross-linked polyethylene, polycarbonate, polysulfone, polyphenylene ether, polyester, phenolic resin, urea-formaldehyde, styrene-acrylonitrile copolymer, polymethyl methacrylate, and polyoxymethylene resin.

25. The linkage device for synchronously controlling multiple locking levers as described in claim 22, characterized in that, The drive shaft is made of glass fiber.

26. The linkage device for synchronously controlling multiple locking levers as described in claim 1, characterized in that, The first and second locking rods are made of one of the following materials: polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, polyterephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, cross-linked polyolefin, ethylene / vinyl acetate copolymer, cross-linked polyethylene, polycarbonate, polysulfone, polyphenylene ether, polyester, phenolic resin, urea-formaldehyde, styrene-acrylonitrile copolymer, polymethyl methacrylate, and polyoxymethylene resin.

27. The linkage device for synchronously controlling multiple locking levers as described in claim 13, characterized in that, The first and second rotating shafts have wear-resistant coatings.

28. The linkage device for synchronously controlling multiple locking levers as described in claim 27, characterized in that, The wear-resistant coating is made of one of the following materials: ceramic, alloy, oxide, or fluoroplastic.

29. The linkage device for synchronously controlling multiple locking levers as described in claim 27, characterized in that, The wear-resistant coating includes one of the following: gold, silver, nickel, tin, tin-lead alloy, zinc, silver-antimony alloy, palladium, palladium-nickel alloy, graphite silver, graphene silver, and silver-gold-zirconium alloy.

30. A charging device, characterized in that, The charging device includes the linkage device for synchronously controlling multiple locking levers as described in any one of claims 1-29.

31. A motor vehicle, characterized in that, The motor vehicle includes the linkage device for synchronously controlling multiple locking levers as described in any one of claims 1-29.

Images