Compact type charging gun actuator capable of being forcibly unlocked

Abstract

The utility model relates to the field of charging guns, in particular to a compact type forcibly-unlocked actuator for a charging gun, which comprises an actuator shell, a motor assembly, a lock cylinder assembly and a feedback switch, an operating rod is fixedly arranged on an output shaft of the motor assembly, and the operating rod 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 utility model 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 utility model relates to the technical field of charging guns for new energy vehicles, 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 actuators for charging guns have the following three unsolvable problems:

[0004] 1. The existing charging gun actuator adopts an IP67 protection design for internal components and an IP65 protection level for the overall shell, which is low in overall protection level.

[0005] 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. In addition, the powder from the worn sealing ring will enter the interior of the actuator, which may easily cause damage to the actuator.

[0006] 3. The manual unlocking function is linked to the motor. Therefore, if the motor is ablated and cannot operate, or the motor gearbox is damaged and cannot operate, the manual unlocking function will also be ineffective.

[0007] 4. The existing charging gun actuator offsets the motor rebound through the friction between the internal structures. During use, the friction gap between the parts increases and the friction decreases, which reduces the locking and unlocking position accuracy of the actuator. The locking and unlocking are not in place, causing the actuator to fail. Utility Model Content

[0008] The technical problem to be solved by the present invention is to provide an actuator for a charging gun in response to the above-mentioned deficiencies in the existing technology, which has stable position feedback accuracy, little influence from lock core wear, no wear of the sealing ring causing a reduction in protection level and thus failure, and can still be manually unlocked even if the motor and gearbox are damaged.

[0009] To achieve the above-mentioned purpose, the following technical solution 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 fixedly provided with 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 for interference fit between the torque transmission portion and the mounting portion, 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, and the tight fit position of the waterproof ring and the operating rod also remains stationary, and the extension area moves and realizes static sealing.

[0010] The above technical solution is adopted, and the motor is composed of a motor and a motor gearbox. An output shaft is provided at the end of the motor gearbox, and the shape of the output shaft can be semicircular. A semicircular slot is also provided at one end of the operating rod. The two are inserted and fixed to achieve 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 normal working, 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 normal manual unlocking is not affected. Manual unlocking can be achieved when the motor, gearbox and operating rod cannot rotate; The waterproof ring is tightly fitted with the operating rod, 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, dynamic friction, and 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, and the 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, solves the problem of O-ring wear, and improves the reliability and durability of the seal. Only the stretched area of ​​the waterproof ring undergoes a torsional expansion action, and the torsional expansion amount at this position is within the allowable range of the elastic deformation of the silicone material, while other positions remain stationary, ensuring reliability and durability and achieving static sealing.

[0011] 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 remains stationary, the extension area protrusion is arranged on the mounting bottom surface toward 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.

[0012] By adopting the above technical solution, 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. 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 synchronizes 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, 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.

[0013] 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 part that are rotatably connected to each other. The manual unlocking handle and the roller part are both provided with openings for the torque transmission part to pass through. The roller part is provided with a disc spring countersunk hole for the installation of the disc spring 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. A nut countersunk hole is provided on the side of the manual unlocking handle away from the roller part. 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 for manual unlocking.

[0014] The above technical solution achieves a torque connection between the operating rod and the lock cylinder. The specific principle is that when the nut presses the lock cylinder, the disc spring between the lock cylinder and the operating rod cross section squeezes the disc spring to generate elastic force. Because the lock cylinder and the operating rod are axially connected by a circular axis, a torque connection is formed between the lock cylinder and the operating rod. During normal operation, the torque between the lock cylinder assembly and the operating rod is greater than the torque of the actuator for locking and unlocking. Therefore, the lock cylinder and the operating rod remain in a relatively static state between them, which can be regarded as a fixed connection. During normal manual unlocking, the torque between the lock cylinder and the operating rod is greater than the rotational torque of the motor, gearbox, and structure. Therefore, the lock cylinder and the operating rod remain in a relatively static state between them, and normal manual unlocking is not affected. If the motor is damaged and cannot rotate, or the gearbox is broken and cannot rotate, and the operating rod cannot rotate, the manual unlocking handle of the lock cylinder is pushed. At this time, the torque connection between the lock cylinder and the operating rod is activated, and the lock cylinder can still rotate around the operating rod axis to achieve the unlocking function. This solves the problem of manual unlocking due to motor and gearbox damage.

[0015] 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 for the output shaft to extend therefrom, the mounting area being rotatably arranged for a mounting part, the mounting part comprising a turntable and a pressure block arranged on the upper or lower side of the outer circumference of the turntable, the pressure block extending from the mounting area and abutting or moving 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 away from the feedback switch after rotation to achieve unlocking and locking.

[0016] 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 and the pressure block moves 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.

[0017] 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 provided in the mounting area and a torsion spring provided in the torsion spring mounting groove; at least two torsion spring positioning grooves are provided 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; the other end is a protrusion elastically abutting against the torsion spring positioning groove; a bend that generates elastic force is provided between the mounting column and the protrusion.

[0018] The above technical solution is adopted. After the torsion spring is assembled, there is tension toward the axis. 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 drives the turntable to rotate. In the process of rotating the turntable, 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 at the stop positions of locking and unlocking, realizing 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 diagonally opposite to the turntable, so that when the turntable is tilted, bidirectional elastic clamping can be achieved and the unlocked state or locked state can be maintained for a long time. After locking and unlocking are in place, the operating rod is prevented from rebounding, solving the problem of large displacement of the locking and unlocking positions caused by motor rebound in the prior art.

[0019] 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 the operating lever are provided on the upper or lower side of the outer circumference 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.

[0020] 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 limit 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 and 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 achieving maintaining the unlocked state.

[0021] 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, the protective shell is provided with a stepped groove at one end of the slot, 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 the end away from the slot, and the potting glue seals the protective shell and fixes the feedback switch and motor assembly.

[0022] By adopting the above technical solution, 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 shells in the existing technology mostly adopt upper buckle and welding process, the overall volume is large, the welding protection cost is high, and the reliability and durability of the 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, so that the actuator is compact as a whole, with a small volume, and the reliability and durability of the sealing glue 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 is liquid. After the sealing process, it solidifies into a hard solid, which plays a role in sealing, fixing and waterproofing the feedback switch and motor.

[0023] 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 the end of the feedback switch away from the trigger rod, and a motor wire is provided at the end of the motor away from the output shaft. The feedback switch wire and the motor wire are connected to a terminal sleeve, and a plurality of mounting grooves are provided on the terminal sleeve. The feedback switch wire and the motor wire are inserted into the mounting grooves and crimped with quick-connect terminals.

[0024] With 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.

[0025] 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.

[0026] 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 the direct hard contact between the top of the lock core and the charging gun rod during the unlocking process of the current technology without a roller lock core.

[0027] 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 sealed above the waterproof pad.

[0028] Using the above technical solution, the S switch is crimped onto the quick-connect terminal through the wire and then installed into the terminal sleeve for integration. This S switch exists as an option and does not affect the overall function of the actuator. The waterproof gasket is made of single-sided 3M adhesive silicone material, with an inner hole that passes through the terminal sleeve and a hole for installation avoidance. The 3M adhesive surface is bonded to the waterproof gasket installation area on the terminal sleeve for assembly. At the same time, potting glue is used to further increase the firmness and waterproofness. The sealing gasket prevents the potting glue from penetrating the wiring and prevents displacement, making the actuator run more stable.

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional diagram of an embodiment of the present utility model.

[0031] Figure 2 For the embodiment of the utility model Figure 1 Schematic diagram of the explosion structure.

[0032] Figure 3 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the motor housing.

[0033] Figure 4 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the operating lever.

[0034] Figure 5 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the torsion spring.

[0035] Figure 6 This is a structural schematic diagram of the feedback switch, motor assembly, operating rod and torsion spring positioning structure of an embodiment of the present invention in a locked state.

[0036] Figure 7 This is a schematic structural diagram of the feedback switch, motor assembly, operating lever and torsion spring positioning structure of an embodiment of the present invention in the unlocked state.

[0037] Figure 8 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the middle waterproof ring.

[0038] Figure 9 For the embodiment of the utility model Figure 2 Three-dimensional lock core assembly Figure 1 .

[0039] Figure 10 For the embodiment of the utility model Figure 2 Three-dimensional lock core assembly Figure 2 .

[0040] Figure 11 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the sealing gasket.

[0041] Figure 12 It is a left side view and an AA sectional view of an embodiment of the utility model.

[0042] Figure 13 For the embodiment of the utility model Figure 12 Enlarged view of part A in .

[0043] Figure 14 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the protective shell.

[0044] Figure: 1. Actuator housing; 2. Motor assembly; 3. Lock core assembly; 4. Feedback switch; 5. Torsion spring positioning structure; 6. Opening; 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 slot; 41. Trigger lever; 42. Feedback switch wire; 43. Terminal cover; 44. Mounting slot; 45. Quick-connect terminal; 46. S-type switch Wire connection; 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 portion; 242, torque transmission portion; 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 gasket; 2411, turntable; 2412, pressure block. DETAILED DESCRIPTION

[0045] 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 embodiments described 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 making creative efforts shall fall within the scope of protection of the protection examples of the present invention.

[0046] Example: Figures 1-14 The shown embodiment shows a compact actuator for a charging gun that can be forcibly unlocked, comprising an actuator housing 1, a motor assembly 2, a lock core assembly 3 and a feedback switch 4. 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. A slot 13 is provided at one end of the protective shell 11 for the output shaft 23 to extend. A sealing ring 14 is provided 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. The protective shell 11 is potted with a potting glue 15 at one end away from the slot 13. 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 torque-transmitted to realize manual unlocking. A waterproof ring 25 is provided with an interference fit between the torque transmission portion 242 and the mounting portion 241. 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 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. Figure 14As 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 251 to keep the mounting bottom surface 251 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 is abutted against the top of the extension area 252. The limiting boss 243 is provided with a limiting ring groove 244 on the end facing the extension area 252, and the limiting ring groove 244 abuts against the inner wall of the through hole 253. The limiting boss 243 is abutted against a disc spring 245 on the end 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.

[0047] like Figure 8 and Figure 9 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 realize sliding unlocking. The sliding connection prevents the roller 32 from hard contact with the charging gun rod, which causes wear of the lock core assembly 3. The manual unlocking handle 31 and the roller member 32 are both provided with an opening 6 for the torque transmission part 242 to pass through. The roller member 32 is provided with a disc spring countersunk hole 246 for the disc spring 245 to be installed facing 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 and the top of the torque transmission part 242 are screwed together in the nut countersunk hole 311 through a nut to realize torque transmission and thus manually unlock.

[0048] like Figure 2-Figure 8As shown, the bracket 12 is provided with a movable 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 rotate. The mounting portion 241 includes a turntable 2411 and a pressure block 2412 provided on the upper or lower side of the outer circumference of the turntable 2411. 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. When the operating rod 24 abuts the unlocking limit surface 26, unlocking is achieved, and when the operating rod 24 abuts the locking limit surface 27, locking is achieved. The pressure block 2412 extends from the mounting area 221 and abuts 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, and the torsion spring positioning structure 5 elastically abuts against the left and right sides of the outer circumference of the turntable 2411 and enables the pressure block 2412 to maintain abutment against the feedback switch 4 or maintain a distance 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 moves away from the trigger rod 41 and enables the feedback switch 4 to be untriggered to achieve the unlocked state.

[0049] like Figure 6 As shown, when the actuator is in the locked state, the pressure block 2412 of the operating rod 24 is in the position shown in the figure, that is, it abuts the locking limit surface, pressing the trigger rod 41 of the feedback switch 4 downward, the feedback switch 4 is in the triggered state, and the system determines that the actuator is in the locked state;

[0050] like Figure 7 As shown, when the actuator is in the unlocked state, the pressure 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 the free state, the feedback switch 4 is in the untriggered state, and the system determines that the actuator is in the unlocked state;

[0051] like Figure 1 and Figure 2As 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 sleeve 43, and a plurality of mounting grooves 44 are provided on the terminal sleeve 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 to 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 to 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. Figure 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 installed. The output shaft 23 is semicircular and is inserted into the semicircular mounting hole of the operating rod 24. It 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 center. 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, realizing positioning and anti-rebound functions, and solving the problem of unstable position feedback accuracy.

[0052] like Figure 2 、 Figure 4 and Figure 5 As shown, the torsion spring positioning structure 5 includes 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 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. A bend 56 for generating elastic force is provided between the mounting column 54 and the protrusion 55.

[0053] Finally, it should be noted that the above description is merely 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 will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection 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 disposed within 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), and is characterized in that: The output shaft (23) extends out of the motor housing (22) and is fixedly provided with an operating rod (24). 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) transmit torque 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. 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 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 with forced unlocking according to claim 1, characterized in that: The waterproof ring (25) includes a mounting bottom surface (251) that contacts the actuator housing (1) and maintains a stationary state. The extension area (252) is convexly arranged on the mounting bottom surface (251) in a direction toward the lock core assembly (3). A through hole (253) for the torque transmission part (242) to extend is provided at the center of the extension area (252). 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 on one end of the limiting boss (243) toward 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 with forced unlocking according to claim 2, characterized in that: The end of the limiting boss (243) away from the extension area (252) is in contact with a disc spring (245), and the disc spring (245) is sleeved on the torque transmission part (242). The lock core assembly (3) includes a manual unlocking handle (31) and a roller member (32) that are rotatably connected to each other. The manual unlocking handle (31) and the roller member (32) are both provided with an opening (6) for the torque transmission part (242) to pass through. The roller member (32) is provided toward the limiting boss (243). There is a disc spring countersink (246) for installing 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 (246), and 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) and the top of the torque transmission part (242) are screwed together in the nut countersink (311) through a nut to realize torque transmission and thus manually unlock.

4. A compact actuator for a charging gun with forced unlocking according to claim 1, 2 or 3, characterized in that: 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 provided for the mounting portion (241) to be rotatably mounted. The mounting portion (241) comprises a turntable (2411) and a pressure block (2412) disposed on the upper or lower side of the outer circumference of the turntable (2411). The pressure 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 turntable (2411) to enable the pressure block (2412) to remain abutting against the feedback switch (4) or to remain away from the feedback switch (4) after rotation to achieve unlocking or locking.

5. A compact actuator for a charging gun with forced unlocking according to claim 4, characterized in that: 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 the left and right sides of the outer peripheral surface of the turntable (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 with forced unlocking according to claim 5, characterized in that: An unlocking limit surface (26) and a locking limit surface (27) for limiting the rotation range of the operating lever (24) are provided on the upper side or the lower side of the outer peripheral surface of the rotating disk (2411). When the operating lever (24) abuts the unlocking limit surface (26), unlocking is achieved; when the operating lever (24) abuts the locking limit surface (27), locking is achieved. A trigger rod (41) is provided on the feedback switch (4). When the operating lever (24) abuts 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 lever (24) abuts 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 with forced unlocking according to claim 1, 2 or 3, characterized in that: The actuator housing (1) includes a protective shell (11) and a bracket (12) that 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. A sealing ring (14) is sleeved on 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). The protective shell (11) is provided with a stepped groove (16) at one end of the slot (13). The stepped groove (16) is abutted by the mounting bottom surface (251) and keeps the mounting bottom surface (251) in a stationary state. The protective shell (11) is potted with a potting glue (15) at one end 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. The compact actuator for a charging gun with forced unlocking according to claim 7, characterized in that: 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 to a terminal sheath (43), and the terminal sheath (43) is provided with a plurality of mounting grooves (44). 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. The compact actuator for a charging gun with forced unlocking according to claim 7, characterized in that: The bracket (12) is provided with a movable groove (33) for the roller member (32) to move. A roller (321) is rotatably provided on the top of the roller member (32). The roller (321) contacts the charging gun rod to achieve sliding unlocking.

10. A compact actuator for a charging gun with forced unlocking according to claim 8, characterized in that: 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). A potting glue (15) is potted above the waterproof pad (48).

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