Compact type charging gun actuator capable of being forcibly unlocked

Abstract

The invention relates to the field of charging guns, in particular to a compact type charging gun actuator capable of being forcibly unlocked, which comprises an actuator shell, a motor assembly, a lock cylinder assembly and a feedback switch, and is characterized in that an operating rod is fixedly arranged on an output shaft of the motor assembly and is fixedly connected with the output shaft through a mounting part; manual unlocking is achieved through torque transmission of the torque transmission part and the lock cylinder assembly, a waterproof ring is arranged between the torque transmission part and the installation part in an interference tight fit mode, the waterproof ring abuts against the actuator shell to keep a static state, and the tight fit position of the waterproof ring and the operation rod also keeps a static state. And the stretching area acts and realizes static sealing. The invention has the beneficial effects that the position feedback precision is stable, the wear influence of the lock cylinder is small, the wear of the sealing ring does not cause the reduction of the protection level and the failure, and the manual unlocking can still be realized when the motor and the gear box are damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging guns, and in particular to a compact actuator for a charging gun that can be forcibly unlocked. Background Art

[0002] Existing charging guns generally use a motor or micromotor to drive a manual knob to lock and unlock, a built-in switch to provide lock / unlock position feedback, an external S switch to provide gun insertion status feedback or a built-in S switch, and an external metal dome rotates to drive the internal connecting rod mechanism to control the switch on and off.

[0003] Existing charging gun actuators have the following three unsolvable problems: 1. The existing charging gun actuator adopts a separate IP67 protection design for internal components and an IP65 protection level for the overall shell, which has a low overall protection level; 2. The protection adopts a sealing ring structure and dynamic friction. In normal use, before the service life of the actuator is reached, the wear of the sealing ring will cause waterproof failure, thereby causing damage to the actuator, and the powder from the wear of the sealing ring will enter the interior of the actuator, which is easy to cause damage to the actuator; 3. The manual unlocking function is linked to the motor. Therefore, if the motor is ablated and cannot work, or the motor gearbox is damaged and cannot work, the manual unlocking function will also be ineffective. 4. The existing charging gun actuator uses the friction between the internal structures to offset the motor rebound. During use, the friction gap between the parts increases, the friction decreases, and the locking and unlocking position accuracy of the actuator is reduced, and the locking and unlocking are not in place, causing the actuator to fail. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an actuator for a charging gun with stable position feedback accuracy, little influence of lock core wear, no reduction in protection level and thus failure due to wear of the sealing ring, and the ability to be manually unlocked even if the motor and gear box are damaged, in view of the above-mentioned deficiencies in the prior art.

[0005] To achieve the above-mentioned purpose, the following technical scheme is adopted: a compact actuator for a charging gun that can be forcibly unlocked, comprising an actuator housing, a motor assembly, a lock core assembly and a feedback switch, wherein the motor assembly is arranged in the actuator housing, one end of the motor assembly is connected to the lock core assembly, and the other end is connected to the feedback switch, the motor assembly comprises a motor and a motor housing, the output end of the motor is provided with an output shaft and extends from the motor housing, an operating rod is fixedly provided at one end of the output shaft extending from the motor housing, one end of the operating rod is a mounting portion fixedly connected to the output shaft, and the other end is a torque transmission portion connected to the lock core assembly, the lock core assembly and the torque transmission portion are manually unlocked by torque transmission, a waterproof ring is provided between the torque transmission portion and the mounting portion through interference fit, and an extension area is provided on the waterproof ring, when the actuator is working, the waterproof ring contacts the actuator housing and remains stationary, the tight fit position of the waterproof ring and the operating rod also remains stationary, the extension area moves and realizes static sealing.

[0006] By adopting the above technical scheme, the motor is composed of a motor and a motor gearbox. An output shaft is arranged at the end of the motor gearbox, and the shape of the output shaft can be semicircular. A semicircular slot is also arranged at one end of the operating rod. The two are inserted and fixed to realize synchronous rotation. The lock core assembly and the torque transmission part are connected by a nut, and by using a torque wrench, the tightening torque of the nut is always greater than the locking and unlocking torque of the actuator. During the normal working process, since the torque between the lock core and the operating rod is greater than the locking and unlocking torque of the actuator, the lock core assembly and the operating rod remain in a relatively static state, which can be regarded as a fixed connection; in the normal manual unlocking process, since the torque between the lock core assembly and the operating rod is greater than the self-rotation torque of the motor and the gearbox, the lock core and the operating rod remain in a relatively static state, and the normal manual unlocking is not affected. Manual unlocking can be realized when the motor, the gearbox, and the operating rod cannot rotate; The waterproof ring and the operating rod are tightly fitted with each other, thereby achieving the effect of axial waterproofing. At the same time, the rotation of the operating rod will not drive the waterproof ring to rotate, so that the waterproof ring remains stationary, which is a static seal and will not cause the risk of wear and failure. The existing actuator for charging guns uses an O-ring structure for protection and dynamic friction. In normal use, before the service life of the actuator is reached, the waterproof failure occurs due to the wear of the O-ring, thereby causing damage to the actuator. In addition, powder from the wear of the O-ring enters the interior of the actuator, which can easily cause damage to the actuator. The present application converts the O-ring into a static seal, which solves the problem of O-ring wear and improves the reliability and durability of the seal. Only the waterproof ring stretching area undergoes torsional expansion, and the torsional expansion amount at this position is within the allowable range of elastic deformation of the silicone material, while other positions remain stationary, ensuring reliability and durability and achieving static sealing.

[0007] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: the waterproof ring includes a mounting bottom surface that contacts the actuator housing and maintains a stationary state, the extension area protrusion is arranged on the mounting bottom surface in the direction of the lock core assembly, a through hole is opened in the center of the extension area for the torque transmission part to extend, a limiting boss is provided on the side wall of the torque transmission part, the limiting boss is abutted against the top of the extension area, and a limiting ring groove is provided on one end of the limiting boss toward the extension area, and the limiting ring groove abuts against the inner wall of the through hole.

[0008] By adopting the above technical scheme, during the rotation of the operating lever, the installation bottom surface abuts against the actuator housing and remains stationary. At this time, the waterproof ring is a static seal and will not cause the risk of wear and failure. At the same time, the through hole is clamped on the limiting ring groove of the operating lever, and the limiting boss abuts against the top of the extension area. The waterproof ring is made of silicone, so a binding force is generated between the through hole and the limiting ring groove, and the binding force is greater than the torsional expansion force of the parts in the extension area of ​​the waterproof ring. Therefore, during the rotation of the operating lever, the through hole moves synchronously with the limiting ring groove of the operating lever, and the contact position of the two is in a relatively static state, which is a static seal and will not cause the risk of wear and failure. During the rotation of the operating lever, only the extension area of ​​the waterproof ring undergoes torsional expansion, and the torsional expansion amount at this position is within the allowable range of elastic deformation of the silicone material, thereby ensuring reliability and durability. As mentioned above, through the special waterproof ring structure, in this structure, the dynamic seal currently on the market is converted into a static seal, which solves the problem that the protection level is reduced from IP67 and the protection fails due to wear of the sealing ring in the current market.

[0009] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: the limiting boss is abutted against a disc spring at one end away from the extension area, and the disc spring is sleeved on the torque transmission part. The lock core assembly includes a manual unlocking handle and a roller member that are rotatably connected to each other, and the manual unlocking handle and the roller member are both provided with openings for the torque transmission part to pass through, and the roller member is provided with a disc spring countersunk hole for the disc spring to be installed facing the limiting boss, one side of the disc spring abuts against the limiting boss, and the other side abuts against the bottom surface of the disc spring countersunk hole, and a nut countersunk hole is provided on the side of the manual unlocking handle away from the roller member, and the manual unlocking handle and the top of the torque transmission part are screwed together through a nut in the nut countersunk hole to realize torque transmission, thereby manually unlocking.

[0010] The above technical solution is adopted to realize the torque connection between the operating rod and the lock core. The specific principle is that in the process of the nut pressing the lock core, the disc spring between the lock core and the cross section of the operating rod causes the disc spring to squeeze and generate elastic force. In addition, because the lock core and the operating rod are axially connected as a round shaft, a torque connection is formed between the lock core and the operating rod. In the normal working process, because the torque between the lock core assembly and the operating rod is greater than the torque of the actuator for locking and unlocking, the lock core and the operating rod remain in a relatively static state between them, which can be regarded as a fixed connection; in the normal manual unlocking process, because the torque between the lock core and the operating rod is greater than the self-rotation torque of the motor, the gear box and the structure, the lock core and the operating rod remain in a relatively static state between them, and the normal manual unlocking is not affected. When the motor is damaged and cannot rotate, or the gear box is broken and cannot rotate, and the operating rod cannot rotate, the manual unlocking handle of the lock core is pushed. At this time, the torque connection between the lock core and the operating rod takes effect, and the lock core can still rotate around the operating rod axis to realize the unlocking function. The problem of manual unlocking due to motor and gear box damage is solved.

[0011] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: a mounting area is provided at one end of the motor housing where the output shaft extends, the mounting area is rotatably arranged for a mounting part, the mounting part includes a turntable and a pressure block arranged on the upper or lower side of the outer circumference of the turntable, the pressure block extends from the mounting area and abuts against or moves away from a feedback switch to achieve unlocking or locking, a torsion spring positioning structure is provided between the mounting area and the mounting part, the torsion spring positioning structure elastically abuts against the left and right sides of the outer circumference of the turntable and enables the pressure block to remain abutting against the feedback switch or remain away from the feedback switch after rotation to achieve unlocking and locking.

[0012] By adopting the above technical solution, the turntable is rotatably installed in the installation area and the rotation amplitude of the turntable is elastically limited by the torsion spring positioning structure, so that the pressure block always contacts the feedback switch, or when the turntable rotates to make the pressure block move away from the feedback switch, the position of the turntable is limited by the torsion spring positioning structure. When the state needs to be changed, the torsion spring will not lock the turntable. The torsion spring only gives the turntable an elastic contact limit.

[0013] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: the torsion spring positioning structure includes a torsion spring mounting groove arranged in the mounting area and a torsion spring arranged in the torsion spring mounting groove, at least two torsion spring positioning grooves are arranged on the left and right sides of the outer circumference of the turntable, one end of the torsion spring is a mounting column fixedly connected to the torsion spring mounting groove, and the other end is a protrusion elastically abutted against the torsion spring positioning groove, and a bend that generates elastic force is provided between the mounting column and the protrusion.

[0014] By adopting the above technical scheme, after the torsion spring is assembled, there is tension toward the axis center. After the turntable is assembled on the mounting surface, an elastic expansion force is formed between the outer contact surface of the turntable and the output shaft of the motor rotates to drive the turntable to rotate. The four torsion spring positioning grooves on the left and right sides of the outer circumference of the turntable contact with the protrusions of the torsion spring in the stop positions of locking and unlocking, thereby realizing the positioning and anti-rebound functions, thereby solving the problem of unstable position feedback accuracy. The torsion spring is kept clamped in the torsion spring positioning groove through the bending setting and generates a clamping elastic force. When the turntable rotates toward the right, the torsion spring on the right falls into a higher torsion spring positioning groove on the right side of the turntable, and the torsion spring on the left falls into a lower torsion spring positioning groove on the left side of the turntable. The positions of the two torsion springs are now diagonal to the turntable, thereby enabling bidirectional elastic clamping to be achieved when the turntable is in a tilted state and maintaining an unlocked state or a locked state for a long time. After the locking and unlocking are in place, the operating rod is prevented from rebounding, thereby solving the problem of large displacement of the locking and unlocking positions caused by motor rebound in the prior art.

[0015] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: an unlocking limit surface and a locking limit surface that limit the rotation range of an operating lever are provided on the upper side or the lower side of the outer circumferential surface of the turntable; unlocking is achieved when the operating lever abuts the unlocking limit surface, and locking is achieved when the operating lever abuts the locking limit surface; a trigger rod is provided on the feedback switch; when the operating lever abuts the locking limit surface, the pressure block presses the trigger rod down and triggers the feedback switch to achieve a locked state; when the operating lever abuts the unlocking limit surface, the pressure block moves away from the trigger rod and the feedback switch is not triggered to achieve an unlocked state.

[0016] By adopting the above technical solution, after the operating lever is rotated, its side surface will abut against the locking limit surface or the locking limit surface. The locking limit surface and the locking limit surface define the rotation limit position of the operating lever, so that the operating lever will not rotate 360°, but rotate in the range between the locking limit surface and the locking limit surface. The locking limit surface is the locking position of the actuator, and the unlocking limit surface is the unlocking position. The shape of the pressure block is L-shaped, and the shape of the trigger rod is similar to a zigzag shape. When the pressure block reaches the trigger rod, it will abut against the trigger rod to press the trigger rod downward. The trigger rod transmits a signal to the feedback switch to realize the operation of the locked state. Conversely, when the pressure block is driven away from the trigger rod by the turntable, the trigger rod stops pressing down, so the feedback switch is not triggered, thereby maintaining the unlocked state.

[0017] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: the actuator housing includes a protective shell and a bracket fixedly connected to each other, one end of the protective shell is provided with a slot for the output shaft to extend, the root of the output shaft is sleeved with a sealing ring, and the sealing ring is embedded in the inner wall of the motor housing to achieve waterproofing between the inner wall of the motor housing and the output shaft, one end of the protective shell with the slot is provided with a stepped groove, the stepped groove is for the installation bottom surface to abut and keep the installation bottom surface in a stationary state, the protective shell is potted with potting glue at one end away from the slot, and the potting glue seals the protective shell and fixes the feedback switch and the motor assembly.

[0018] By adopting the above technical scheme, the grooved side of the protective shell can be provided with a stepped groove so that the installation bottom surface of the waterproof ring will not rotate with the operating lever, thereby achieving positioning and keeping the waterproof ring stationary. The outer shells in the prior art mostly adopt upper buckle and welding process, the overall volume is large, the welding protection cost is high, and the reliability and durability of welding protection are low; the parts of this structure are installed by insertion on the left and right sides, and the static end is sealed and fixed by glue potting, so that the actuator is compact as a whole, with a small volume, and the reliability and durability of the sealing glue potting protection are higher; at the same time, the sealing ring also adopts a static seal, and will not move with the rotation of the output shaft. The initial state of the sealing glue potting is liquid. After the potting process, it solidifies into a hard solid, which plays a role in sealing, fixing and waterproofing the feedback switch and the motor.

[0019] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: a feedback switch wire is provided at one end of the feedback switch away from the trigger rod, a motor wire is provided at one end of the motor away from the output shaft, the feedback switch wire and the motor wire are connected with a terminal sleeve, a plurality of mounting grooves are provided on the terminal sleeve, the feedback switch wire and the motor wire are inserted into the mounting groove and crimped with quick-connect terminals.

[0020] By adopting the above technical solution, the quick-connect terminal is a standard female terminal that matches the 0.64 pin. It is connected to the feedback switch wire and the motor wire through crimping. The quick-connect terminal can be easily connected to the circuit, making it more versatile.

[0021] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: a movable groove for the roller member to move is opened on the bracket, a roller is rotatably provided on the top of the roller member, and the roller contacts the charging gun rod to realize sliding unlocking.

[0022] By adopting the above technical solution, when locking and unlocking, the roller contacts the charging gun rod, and the two are connected in a sliding manner, which reduces wear and solves the problem of lock core wear caused by direct hard contact between the top of the lock core and the charging gun rod during the unlocking process of the roller-free lock core in the current technology.

[0023] A compact actuator for a charging gun that can be forcibly unlocked can be further configured as follows: the quick-connect terminal is also crimped with an S switch wire, the S switch wire is connected to an S switch, a waterproof pad is bonded to the outside of the installation groove, a sealing pad corresponding to the position of the installation groove is provided inside the waterproof pad, openings corresponding to the total number of feedback switch wires, motor wires and S switch wires are opened on the sealing pad, and potting glue is filled above the waterproof pad.

[0024] By adopting the above technical solution, the S switch is crimped with the quick-connect terminal through the wire and then installed into the terminal sleeve for integration. The S switch exists as an option and does not affect the overall function of the actuator. The waterproof pad is made of single-sided 3M adhesive silicone material, with an inner hole passing through the terminal sleeve and a hole for installation avoidance. The 3M adhesive surface is bonded and assembled with the waterproof pad installation area on the terminal sleeve. At the same time, the potting glue is used to further increase the firmness and waterproofness, and the sealing pad prevents the potting glue from penetrating into the wiring and prevents displacement, making the actuator run more stably.

[0025] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a stereogram of an embodiment of the present invention.

[0027] Figure 2 For the embodiment of the present invention Figure 1 Schematic diagram of the explosion structure.

[0028] Figure 3 For the embodiment of the present invention Figure 2 Schematic diagram of the structure of the motor housing.

[0029] Figure 4 For the embodiment of the present invention Figure 2 Schematic diagram of the structure of the operating lever.

[0030] Figure 5 For the embodiment of the present invention Figure 2 Schematic diagram of the structure of the torsion spring.

[0031] Figure 6 It is a schematic structural diagram of the feedback switch, the motor assembly, the operating rod and the torsion spring positioning structure of an embodiment of the present invention in a locked state.

[0032] Figure 7 It is a schematic structural diagram of the feedback switch, the motor assembly, the operating rod and the torsion spring positioning structure of an embodiment of the present invention in the unlocked state.

[0033] Figure 8 For the embodiment of the present invention Figure 2 Schematic diagram of the structure of the middle waterproof ring.

[0034] Fig. 9 For the embodiment of the present invention Figure 2 Three-dimensional image of the central lock core assembly Figure 1 .

[0035] Fig.10 For the embodiment of the present invention Figure 2 Three-dimensional image of the central lock core assembly Figure 2 .

[0036] Fig.11 For the embodiment of the present invention Figure 2 Schematic diagram of the structure of the sealing gasket.

[0037] Fig.12 It is a left side view and an AA sectional view of an embodiment of the present invention.

[0038] Fig.13 For the embodiment of the present invention Fig.12 Enlarged view of part A in .

[0039] Fig.14 For the embodiment of the present invention Figure 2 Schematic diagram of the structure of the protective shell. In the figure: 1. actuator housing; 2. motor assembly; 3. lock core assembly; 4. feedback switch; 5. torsion spring positioning structure; 11. protective shell; 12. bracket; 13. slot; 14. sealing ring; 15. potting glue; 21. motor; 22. motor housing; 23. output shaft; 24. operating lever; 25. waterproof ring; 26. unlocking limit surface; 27. locking limit surface; 31. manual unlocking handle; 32. roller; 33. movable groove; 41. trigger rod; 42. feedback switch wire; 43. terminal cover; 44. installation groove; 45. quick-connect terminal; 46. S switch wire ;47. S switch;48. Waterproof pad;49. Opening;51. Torsion spring mounting groove;52. Torsion spring;53. Torsion spring positioning groove;54. Mounting column;55. Protrusion;56. Bend;211. Motor wire;221. Mounting area;241. Mounting part;242. Torque transmission part;243. Limiting boss;244. Limiting ring groove;245. Disc spring;246. Disc spring countersunk hole;251. Mounting bottom surface;252. Extension area;253. Through hole;311. Nut countersunk hole;321. Roller;481. Sealing pad;2411. Turntable;2412. Press block. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the protection examples of the present invention.

[0041] Example: Figure 1-Figure 14 A compact actuator for a charging gun that can be forcibly unlocked is shown, comprising an actuator housing 1, a motor assembly 2, a lock core assembly 3 and a feedback switch 4, wherein the motor assembly 2 is arranged in the actuator housing 1, one end of the motor assembly 2 is connected to the lock core assembly 3, and the other end is connected to the feedback switch 4, the motor assembly 2 comprises a motor 21 and a motor housing 22, the output end of the motor 21 is provided with an output shaft 23 and extends from the motor housing 22, the actuator housing 1 comprises a protective shell 11 and a bracket 12 that are fixedly connected to each other, one end of the protective shell 11 is provided with a slot 13 for the output shaft 23 to extend, the root of the output shaft 23 is sleeved with a sealing ring 14, the sealing ring 14 is embedded in the inner wall of the motor housing 22 to achieve waterproofing between the inner wall of the motor housing 22 and the output shaft 23, the end of the protective shell 11 away from the slot 13 is potted with a potting glue 15, and the potting glue 15 is potted. The sealing glue 15 realizes the sealing protection shell 11 and fixes the feedback switch 4 and the motor assembly 2. The output shaft 23 extends out of the motor housing 22 and is fixed with an operating rod 24 at one end. One end of the operating rod 24 is a mounting portion 241 fixedly connected to the output shaft 23, and the other end is a torque transmission portion 242 connected to the lock core assembly 3. The lock core assembly 3 and the torque transmission portion 242 are manually unlocked by torque transmission. A waterproof ring 25 is provided between the torque transmission portion 242 and the mounting portion 241 in an interference fit. The waterproof ring 25 is provided with an extension area 252. When the actuator is working, the waterproof ring 25 contacts the actuator housing 1 and remains stationary. The tight fit position of the waterproof ring 25 and the operating rod 24 also remains stationary. The extension area 252 moves and realizes static sealing. The waterproof ring 25 includes a mounting bottom surface 251 assembled with the actuator housing 1. Fig.14 As shown, the protective shell 11 is provided with a stepped groove 16 at one end of the slot 13, and the stepped groove 16 is abutted by the mounting bottom surface 25 to keep the mounting bottom surface 25 in a stationary state. By providing the stepped groove 16, the mounting bottom surface 251 of the waterproof ring 25 will not rotate with the operating rod 24, thereby achieving positioning and keeping the waterproof ring 25 in a stationary state. The mounting bottom surface 251 is provided with an extension area 252 protruding toward the direction of the lock core assembly 3, and a through hole 253 is provided in the center of the extension area 252 for the torque transmission part 242 to extend out. A limiting boss 243 is provided on the side wall of the torque transmission part 242, and the limiting boss 243 abuts against the top of the extension area 252. A limiting ring groove 244 is provided on the end of the limiting boss 243 facing the extension area 252, and the limiting ring groove 244 abuts against the inner wall of the through hole 253. A disc spring 245 abuts against the end of the limiting boss 243 away from the extension area 252. The disc spring 245 is sleeved on the torque transmission part 242, and the waterproof ring 25 realizes the replacement of the O-ring structure that moves synchronously with the operating rod 24 in the prior art with the static seal in this structure.

[0042] like Figure 8 and Fig. 9 As shown, the lock core assembly 3 includes a manual unlocking handle 31 and a roller member 32 that are rotatably connected to each other. The top of the roller member 32 is rotatably provided with a roller 321. The roller 32 contacts the charging gun rod to achieve sliding unlocking. The sliding connection prevents the roller 32 from making hard contact with the charging gun rod and causing wear of the lock core assembly 3. The manual unlocking handle 31 and the roller member 32 are both provided with an opening 33 for the torque transmission part 242 to pass through. The roller member 32 is provided with a disc spring countersunk hole 246 for installing a disc spring 245 toward the limiting boss 243. One side of the disc spring 245 abuts against the limiting boss 243, and the other side abuts against the bottom surface of the disc spring countersunk hole 246. The manual unlocking handle 31 is provided with a nut countersunk hole 311 on the side away from the roller member 32. The manual unlocking handle 31 is screwed with the top of the torque transmission part 242 through a nut in the nut countersunk hole 311 to achieve torque transmission, thereby manually unlocking. like Figure 2-Figure 8 As shown, the bracket 12 is provided with an active groove 33 for the roller member 32 to move, the motor housing 22 is provided with a mounting area 221 at one end for the output shaft 23 to extend, and the mounting area 221 is provided for the mounting portion 241 to be rotatably arranged, and the mounting portion 241 includes a turntable 2411 and a pressure block 2412 arranged on the upper or lower side of the outer circumference of the turntable 2411, and the upper or lower side of the outer circumference of the turntable 2411 is provided with an unlocking limit surface 26 and a locking limit surface 27 for limiting the rotation range of the operating rod 24, and the operating rod 24 is unlocked when it abuts against the unlocking limit surface 26, and is locked when it abuts against the locking limit surface 27, and the pressure block 2412 extends from the mounting area 221 and abuts against the locking limit surface 27. Or away from the feedback switch 4 to achieve unlocking or locking, a torsion spring positioning structure 5 is provided between the installation area 221 and the installation portion 241, the torsion spring positioning structure 5 elastically abuts against the left and right sides of the outer circumference of the turntable 2411 and makes the pressure block 2412 keep abutting against the feedback switch 4 or keep away from the feedback switch 4 after rotation to achieve unlocking and locking, a trigger rod 41 is provided on the feedback switch 4, when the operating rod 24 abuts against the locking limit surface 27, the pressure block 2412 presses down the trigger rod 41 and triggers the feedback switch 4 to achieve the locked state; when the operating rod 24 abuts against the unlocking limit surface 26, the pressure block 2412 is away from the trigger rod 41 and the feedback switch 4 is not triggered to achieve the unlocked state.

[0043] like Figure 6 As shown, when the actuator is in the locked state, the pressing block 2412 of the operating rod 24 is in the position shown in the figure, that is, it abuts against the locking limit surface, and the trigger rod 41 of the feedback switch 4 is pressed down, the feedback switch 4 is in the triggered state, and the system determines that the actuator is in the locked state; like Figure 7As shown, when the actuator is in unlocked state, the pressing block 2412 of the operating rod 24 is in the position shown in the figure, the trigger rod 41 of the feedback switch 4 is in a free state, the feedback switch 4 is in an untriggered state, and the system determines that the actuator is in unlocked state; like Figure 1 and Figure 2 As shown, the feedback switch 4 is provided with a feedback switch wire 42 at one end away from the trigger rod 41, and the motor 21 is provided with a motor wire 211 at one end away from the output shaft 23. The feedback switch wire 42 and the motor wire 211 are connected with a terminal sheath 43, and a plurality of mounting grooves 44 are provided on the terminal sheath 43. The feedback switch wire 42 and the motor wire 211 are inserted into the mounting groove 44 and crimped with a quick-connect terminal 45. The quick-connect terminal 45 is also crimped with an S switch wire 46, and the S switch wire 46 is connected with an S switch 47. The quick-connect terminal 45 is also crimped with an S switch wire 46, and the S switch wire 46 is connected with an S switch 47. A waterproof pad 48 is bonded to the outside of the mounting groove 44, and a sealing pad 481 corresponding to the position of the mounting groove is provided in the waterproof pad 48. The sealing pad 481 is provided with openings 49 corresponding to the total number of the feedback switch wire 42, the motor wire 211 and the S switch wire 46. Fig.11 As shown, it can be set to 7, the sealing gasket 481 is potted with potting glue 15, the quick-connect terminal 45 is crimped with the motor wire 211, the feedback switch wire 42, and the S switch wire 46 respectively, and then the output shaft 23 of the motor 21 passes through the inner ring of the sealing ring 14 (that is, the O-ring), the sealing ring 14 is installed on the output shaft 23 of the motor 21, and pushed to the root of the output shaft 23, the motor 21 is installed from one end of the motor housing 22, and the output shaft 23 of the motor 21 passes through the hole at the other end of the motor housing 22 until the motor 21 contacts the inner wall of the motor housing 22, and the motor 21 is The output shaft 23 is semicircular and is inserted into the semicircular mounting hole of the operating rod 24. The operating rod 24 is rotated to a suitable angle, the operating rod 24 is installed, and the torsion spring 52 is installed in the mounting area 221 of the motor housing 22. After the torsion spring 52 is assembled, there is tension toward the axis. After the operating rod 24 is assembled, pressure is formed on the contact surface with the operating rod 24. During the process of the output shaft 23 rotating to drive the operating rod 24 to rotate, the four torsion spring positioning grooves 53 on the turntable 2411 contact with the protrusion 55 of the torsion spring 52 in the locked and unlocked stop positions, thereby realizing the positioning and anti-rebound functions and solving the problem of unstable position feedback accuracy.

[0044] like Figure 2 , Figure 4 and Figure 5As shown, the torsion spring positioning structure 5 includes a torsion spring mounting groove 51 arranged in the mounting area 221 and a torsion spring 52 arranged in the torsion spring mounting groove 51, and at least two torsion spring positioning grooves 53 are provided on the left and right sides of the outer circumference of the turntable 2411, that is, a total of four torsion spring positioning grooves 53, one end of the torsion spring 52 is a mounting column 54 fixedly connected to the torsion spring mounting groove 53, and the other end is a protrusion 55 elastically abutted against the torsion spring positioning groove 53, and a bend 56 for generating elastic force is provided between the mounting column 54 and the protrusion 55.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compact actuator for a charging gun capable of forced unlocking, comprising an actuator housing (1), a motor assembly (2), a lock core assembly (3) and a feedback switch (4), wherein the motor assembly (2) is arranged in the actuator housing (1), one end of the motor assembly (2) is connected to the lock core assembly (3), and the other end is connected to the feedback switch (4), the motor assembly (2) comprises a motor (21) and a motor housing (22), an output end of the motor (21) is provided with an output shaft (23) and extends from the motor housing (22), Features: An operating rod (24) is fixedly provided at one end of the output shaft (23) extending out of the motor housing (22); one end of the operating rod (24) is a mounting portion (241) fixedly connected to the output shaft (23); the other end is a torque transmission portion (242) connected to the lock core assembly (3); the lock core assembly (3) and the torque transmission portion (242) are torque-transmitted to realize manual unlocking; a waterproof ring (25) is provided between the torque transmission portion (242) and the mounting portion (241) in an interference fit; an extension area (252) is provided on the waterproof ring (25); when the actuator is working, the waterproof ring (25) contacts the actuator housing (1) and remains in a stationary state; the tight fit position of the waterproof ring (25) and the operating rod (24) also remains in a stationary state; the extension area (252) moves and realizes static sealing.

2. A compact actuator for a charging gun that can be forcibly unlocked according to claim 1, Features: The waterproof ring (25) comprises a mounting bottom surface (251) which contacts the actuator housing (1) and maintains a stationary state; the extension area (252) is protrudingly arranged on the mounting bottom surface (251) in a direction toward the lock core assembly (3); a through hole (253) is provided at the center of the extension area (252) for the torque transmission part (242) to extend out; a limiting boss (243) is provided on the side wall of the torque transmission part (242); the limiting boss (243) contacts the top of the extension area (252); a limiting ring groove (244) is provided at one end of the limiting boss (243) facing the extension area (252); the limiting ring groove (244) contacts the inner wall of the through hole (253).

3. A compact actuator for a charging gun that can be forcibly unlocked according to claim 2, Features: The end of the limiting boss (243) away from the extension area (252) is in contact with a disc spring (245), the disc spring (245) being sleeved on the torque transmission part (242), the lock core assembly (3) comprising a manual unlocking handle (31) and a roller member (32) which are rotatably connected to each other, the manual unlocking handle (31) and the roller member (32) being provided with an opening (5) for the torque transmission part (242) to pass through, the roller member (32) being arranged toward the limiting boss (243). A disc spring countersink (246) is provided for mounting a disc spring (245); one side of the disc spring (245) abuts against the limiting boss (243), and the other side abuts against the bottom surface of the disc spring countersink (245); a nut countersink (311) is provided on the side of the manual unlocking handle (31) away from the roller member (32); the manual unlocking handle (31) is screwed to the top of the torque transmission part (242) through a nut in the internal thread of the nut countersink (311) to achieve torque transmission, thereby manually unlocking.

4. A compact actuator for a charging gun that can be forcibly unlocked according to claim 1, 2 or 3, Features: The motor housing (22) is provided with a mounting area (221) at one end from which the output shaft (23) extends. The mounting area (221) is rotatably arranged for the mounting portion (241). The mounting portion (241) comprises a rotating disk (2411) and a pressing block (2412) arranged on the upper side or the lower side of the outer circumference of the rotating disk (2411). The pressing block (2412) extends from the mounting area (221) and abuts against or moves away from the feedback switch (4) to achieve unlocking or locking. A torsion spring positioning structure (5) is provided between the mounting area (221) and the mounting portion (241). The torsion spring positioning structure (5) elastically abuts against the left and right sides of the outer circumference of the rotating disk (2411) so that the pressing block (2412) remains abutting against the feedback switch (4) or remains away from the feedback switch (4) after rotation to achieve unlocking or locking.

5. A compact actuator for a charging gun that can be forcibly unlocked according to claim 4, Features: The torsion spring positioning structure (5) comprises a torsion spring mounting groove (51) provided in the mounting area (221) and a torsion spring (52) provided in the torsion spring mounting groove (51); at least two torsion spring positioning grooves (53) are provided on both left and right sides of the outer peripheral surface of the rotating disk (2411); one end of the torsion spring (52) is a mounting column (54) fixedly connected to the torsion spring mounting groove (51); the other end is a protrusion (55) elastically abutting against the torsion spring positioning groove (53); a bend (56) for generating elastic force is provided between the mounting column (54) and the protrusion (55).

6. A compact actuator for a charging gun capable of forced unlocking according to claim 5, Features: An unlocking limit surface (26) and a locking limit surface (27) for limiting the rotation range of the operating rod (24) are provided on the upper side or the lower side of the outer peripheral surface of the rotating disk (2411); when the operating rod (24) abuts against the unlocking limit surface (26), unlocking is achieved; when the operating rod (24) abuts against the locking limit surface (27), locking is achieved; a trigger rod (41) is provided on the feedback switch (4); when the operating rod (24) abuts against the locking limit surface (27), the pressing block (2412) presses down the trigger rod (41) and triggers the feedback switch (4) to achieve a locked state; when the operating rod (24) abuts against the unlocking limit surface (26), the pressing block (2412) moves away from the trigger rod (41) and causes the feedback switch to be untriggered to achieve an unlocked state.

7. A compact actuator for a charging gun that can be forcibly unlocked according to claim 1, 2 or 3, Features: The actuator housing (1) comprises a protective shell (11) and a bracket (12) which are fixedly connected to each other. A slot (13) is provided at one end of the protective shell (11) for the output shaft (23) to extend out. A sealing ring (14) is sleeved at the root of the output shaft (23). The sealing ring (14) is embedded in the inner wall of the motor housing (22) to achieve waterproofing between the inner wall of the motor housing (22) and the output shaft (23). One end of the protective shell (11) provided with the slot (13) is provided with a stepped groove (16). The stepped groove (16) is provided for the mounting bottom surface (25) to abut against and keep the mounting bottom surface (25) in a stationary state. A potting glue (15) is potted at one end of the protective shell (11) away from the slot (13). The potting glue (15) seals the protective shell (11) and fixes the feedback switch (4) and the motor assembly (2).

8. A compact actuator for a charging gun capable of forced unlocking according to claim 7, Features: A feedback switch wire (42) is provided at one end of the feedback switch (4) away from the trigger rod (41), and a motor wire (211) is provided at one end of the motor (21) away from the output shaft (23). The feedback switch wire (42) and the motor wire (211) are connected to a terminal sheath (43), and a plurality of mounting grooves (44) are provided on the terminal sheath (43). The feedback switch wire (42) and the motor wire (211) are inserted into the mounting grooves (44) and crimped with quick-connect terminals (45).

9. A compact actuator for a charging gun capable of forced unlocking according to claim 7, Features: The bracket (12) is provided with a movable groove (33) for the roller member (32) to move, and a roller (321) is rotatably provided on the top of the roller member (32), and the roller (321) contacts the charging gun rod to achieve sliding unlocking.

10. A compact actuator for a charging gun that can be forcibly unlocked according to claim 8, Features: The quick-connect terminal (45) is also crimped with an S switch wire (46), and the S switch wire (46) is connected to an S switch (47). A waterproof pad (48) is bonded to the outside of the installation groove (44), and a sealing pad (481) corresponding to the position of the installation groove is provided inside the waterproof pad (48). The sealing pad (481) is provided with openings (49) corresponding to the total number of feedback switch wires (42), motor wires (211) and S switch wires (46), and a potting glue (15) is potted above the waterproof pad (48).

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