Miniaturized screw lock pin cover executor with emergency unlocking

Abstract

This utility model relates to a miniaturized screw-type locking cap actuator with emergency unlocking capability. It includes a housing with a motor chamber and a locking chamber arranged side-by-side and connected inside. A push rod is rotatably and vertically positioned in the locking chamber, with one end having a locking pin extending outside the chamber. A rotating assembly is located at the lower end of the push rod, driving it to rotate to unlock or lock the small door. A drive motor is horizontally positioned within the motor chamber, and a locking block is driven onto the drive motor. The drive motor pushes the locking block towards the rotating assembly, causing the locking tongue on the locking block to engage with the rotating assembly, locking it in place. A toggle part extends from the locking block and extends outside the housing; external force can drive the toggle part to manually unlock the rotating assembly. The beneficial effect of this utility model is that by providing a toggle part on the locking block, manual emergency unlocking can be achieved by driving the locking block from the outside, releasing the locking tongue from the rotating assembly, and ensuring that the cap can still be opened normally.

Description

Technical Field

[0001] This utility model relates to the technical field of protective structures for automotive charging port covers, and in particular to a miniaturized screw-locking cover actuator with emergency unlocking function. Background Technology

[0002] Both fuel cell vehicles and new energy vehicles are equipped with covers that shield the fuel filler cap or charging port. Traditional fuel filler caps typically use cable-operated or electric actuators for unlocking and locking. However, both types of actuators require operation via a handle or button inside the driver's cab. With the advent of intelligent vehicles and the rise of self-service gas stations and charging stations, traditional actuators are inconvenient. Drivers cannot unlock locked caps after exiting the vehicle and must return to the cab to operate the handle or button to open the cap. This inconvenience fails to meet users' demands for more intelligent fuel filler cap operation.

[0003] Chinese invention patent application CN112096197A discloses a cover actuator for an automotive energy port. The end face of the housing has a raised cylinder with a through hole communicating with the housing. The latch slides within the through hole. A trapezoidal limiting boss is located on each side of the lower part of the latch. An "L"-shaped guide groove is located on each side of the inner wall of the through hole. The longer side of the "L"-shaped guide groove is an unlocking guide groove, and the shorter side is a locking limiting groove. A transition bevel is formed between the two "L"-shaped guide grooves for locking. The upper end of the groove is a limiting bevel, and the lower end of the lock tongue is provided with two locking parts, with a notch for the lock pin to avoid the locking pin between the two locking parts; the bottom cover is provided with a guide post corresponding to the through hole, and four guide blocks with guide bevels at the top are evenly distributed around the guide post. There is a clearance groove between two adjacent guide blocks, and a clearance gap is left between the guide block and the guide post. The return spring located in the inner cavity of the lock tongue is sleeved on the guide post. The limiting lock pin in the box body slides and is corresponding to a clearance groove. The limiting lock pin is threaded on the screw rod, and the screw rod is circumferentially fixed to the rotating shaft of the motor.

[0004] However, this actuator can only lock and unlock the bolt via a motor. When the motor or screw drive fails, the bolt cannot be unlocked via the motor, and the actuator lacks an emergency unlocking structure. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a miniaturized screw locking pin cover actuator with emergency unlocking.

[0006] A miniaturized screw-locking cap actuator with emergency unlocking function, comprising, The housing has a motor cavity and a locking cavity arranged side by side and communicating inside the housing, and the locking cavity has a locking opening; A push rod, which is rotatably and vertically positioned in the locking cavity, with one end having a locking pin extending out of the locking cavity through the locking opening; A rotating assembly is located at the lower end of the push rod, which drives the push rod to rotate in order to unlock or lock the small door; A drive motor is horizontally placed inside the motor cavity, and a locking block is driven on the drive motor; the drive motor pushes the locking block toward the rotating assembly, so that the locking tongue on the locking block engages with the rotating assembly and locks the rotating assembly. The locking block is provided with a toggle part that extends outside the housing. External force can drive the toggle part to manually unlock the rotating assembly.

[0007] A further provision of the above technical solution is that the actuating part moves linearly along with the locking block, and the housing is provided with an actuating groove that matches the movement range of the actuating part.

[0008] A further provision of the above technical solution is as follows: the rotating assembly includes a driving sleeve and a rotating sleeve arranged sequentially from bottom to top at the lower end of the push rod; the side wall of the driving sleeve is provided with a plurality of protrusions, and a locking groove is formed between the protrusions; the locking tongue is engaged in the locking groove to prevent the rotating sleeve from rotating.

[0009] A further provision of the above technical solution is that: a screw is provided on the output end of the drive motor, and a threaded hole is provided on the locking block to cooperate with the screw.

[0010] By adopting the above technical solution and using a lead screw and nut drive, high-precision, low-noise linear motion is ensured.

[0011] A further provision of the above technical solution is that a waterproof cover is injection molded on the outside of the actuating groove, and the open side of the waterproof cover is connected to the housing, forming a limiting space between the cover and the housing that can accommodate the actuating part.

[0012] A further provision of the above technical solution is that: the opening side of the waterproof cover is provided with a limiting shoulder, and a horizontal clamping groove extends from the side on the limiting shoulder; the edge of the groove of the actuating groove is provided with a clamping rib facing the clamping groove.

[0013] A further provision of the above technical solution is that: a sealing ring is provided on the locking opening, and the sealing ring and the waterproof cover are connected by an insert strip, which is embedded in the groove of the housing.

[0014] A further provision of the above technical solution is that a limiting portion extends from the insert strip, and the limiting portion is embedded in the limiting groove of the housing.

[0015] A further provision of the above technical solution is that: a guide portion is provided on the side of the locking block, and a guide groove is provided on the inner wall of the housing to cooperate with the guide portion and accommodate the guide portion to move in a straight line.

[0016] A further provision of the above technical solution is as follows: a spiral groove is provided on the outer periphery of the push rod, and a limiting protrusion is provided on the inner surface of the locking cavity. The limiting protrusion slides in the spiral groove, and the push rod rotates when it extends into or pops out of the locking cavity through the cooperation of the limiting protrusion and the spiral groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a toggle part on the lock block, the lock block can be driven from the outside to achieve manual emergency unlocking. Even if the motor fails, the lock block can be toggled by external force to release the locking tongue from the actuating component, ensuring that the cover can still be opened normally. Through innovations such as emergency unlocking mechanism, miniaturized design, electric / manual dual-mode compatibility, and high sealing performance, the functional defects of traditional actuators in intelligent scenarios are solved, significantly improving the reliability, safety and user experience of the car charging / refueling cover system, and is especially suitable for the intelligent needs of self-service charging / refueling. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram showing the location and structure of the various components inside the casing.

[0020] Figure 3 for Figure 2 Enlarged structural diagram of part A in the middle.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the actuating part.

[0022] Figure 5 This is a structural diagram of the waterproof cap and sealing ring.

[0023] Figure 6 This is a schematic diagram of the separate structure of the waterproof cover and the shell.

[0024] Figure 7 This is a cross-sectional view of the present invention along the radial direction of the push rod.

[0025] The attached diagram is labeled as follows: 100, housing; 101, actuating groove; 102, locking opening; 110, clamping rib; 103, recessed groove; 103.1, limiting groove; 120, splicing part; 130, limiting protrusion; 200, push rod; 201, spiral slide groove; 210, locking pin; 300, drive motor; 400, locking block; 410, locking tongue; 420, actuating part; 430, guide part; 500, screw; 610, waterproof cover; 611, limiting space; 612, limiting shoulder; 613, notch; 620, sealing ring; 630, insert strip; 631, limiting part; 700, rotating assembly; 710, drive sleeve; 720, rotating sleeve; a, locking groove; 711, protrusion. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0027] like Figure 1-7 As shown in the figure, this embodiment discloses a miniaturized screw lock pin cover actuator with emergency unlocking.

[0028] Specific reference Figure 1 and Figure 2 As shown, including, The housing 100 has a motor cavity and a locking cavity arranged side by side and communicating inside the housing 100, and the locking cavity has a locking port 102; Push rod 200, which is rotatably and vertically disposed in the locking cavity, and one end of which has a locking pin 210 extends out of the locking cavity through the locking port 102; A rotating assembly 700 is provided at the lower end of the push rod 200 to drive the push rod 200 to rotate, thereby unlocking or locking the small door; A drive motor 300 is horizontally placed inside the motor cavity, and a locking block 400 is driven on the drive motor 300. The drive motor 300 pushes the locking block 400 toward the rotating assembly 700, so that the locking tongue 410 on the locking block 400 is engaged with the rotating assembly 700, thereby locking the rotating assembly 700. The locking block 400 is provided with a toggle part 420, which extends outside the housing 100. External force can drive the toggle part 420 to manually unlock the rotating assembly 700.

[0029] The above is the basic scheme of this embodiment.

[0030] During use, an external force applies a pressing action to the push rod 200, which generates an axial driving force on the rotating assembly 700. The rotating assembly 700 converts the axial drive into rotation and reacts on the push rod 200, causing the push rod 200 to rotate circumferentially, thereby rotating the locking pin 210 to unlock or lock.

[0031] Furthermore, in this embodiment, the drive motor 300 is connected to the circuitry inside the vehicle. When the control system sends a start signal, the drive motor 300 is energized and operates, causing the locking block 400 to move smoothly towards the rotating assembly 700. During this movement, the locking tongue 410 at the front end of the locking block 400 gradually approaches the rotating assembly 700 and eventually precisely engages inside the rotating assembly 700. Due to the engaging action of the locking tongue 410, the transmission mechanism inside the rotating assembly 700 is mechanically locked, and the relative movement between the various transmission components is completely restricted, resulting in the entire transmission system being in a locked state. At this time, even if external force continues to act on the push rod 200, it cannot be driven to rotate through the rotating assembly 700, thus maintaining the current state of the locking pin 210.

[0032] When the drive motor 300 fails to operate normally due to electrical or mechanical faults, in the emergency solution of this embodiment, a toggle part 420 is extended from the lock block 400. This toggle part 420 is exposed outside the housing 100 and has a part for manual operation, allowing the operator to apply external force manually. The operator only needs to toggle this part in a specific direction to move the entire lock block 400, realizing the manual unlocking function of the mechanical device and ensuring normal operation even in emergency situations.

[0033] Preferably, the actuating part 420 moves linearly along with the locking block 400, and the housing 100 is provided with an actuating groove 101 that matches the moving range of the actuating part 420.

[0034] Preferably, in this embodiment, the actuating part 420 and the locking block 400 are integrally formed. When the locking block 400 moves, the actuating part 420 always maintains synchronous linear motion with the locking block 400. To ensure smooth movement and convenient operation, an actuating groove 101 matching the movement trajectory of the actuating part 420 is provided on the housing 100 of the device. This ensures the free movement of the actuating part 420 while effectively limiting its range of motion, preventing mechanical damage due to excessive operation.

[0035] When the drive motor 300 is operating normally, the locking block 400 performs precise linear displacement under the drive of the motor. At this time, the actuating part 420, as an extension of the locking block 400, moves in complete synchronization with the locking block 400, sliding smoothly along the actuating groove 101 on the housing 100. This design not only ensures the reliability of the mechanical transmission, but also provides users with intuitive operational feedback, making it easy to monitor the working status of the device at any time.

[0036] In this embodiment, refer to Figure 3 As shown, the locking tongue 410 is specifically configured to prevent rotation between the rotating components 700: the rotating components 700 include a drive sleeve 710 and a rotating sleeve 720 arranged sequentially from bottom to top at the lower end of the push rod 200. The side wall of the drive sleeve 710 is provided with a plurality of evenly distributed protrusions 711, and the protrusions 711 form a locking groove a; this can effectively prevent the rotation of the rotating sleeve 720, thereby realizing the function of preventing rotation of the rotating components 700.

[0037] Chinese utility model patent with authorization announcement number CN209585938U discloses an improved structure of an actuator for a car fuel filler cap. The rotating structure in this embodiment is consistent with the structure and transmission method of the rotating sleeve 720 and driving sleeve 710 disclosed in the patent, and will not be described in detail here.

[0038] In this embodiment, refer to Figure 4 As shown, the transmission mechanism of the drive motor 300 to the locking block 400 adopts a screw and nut transmission method: Specifically, the output end of the drive motor 300 is fitted with a screw 500, and the locking block 400 is provided with a threaded hole that cooperates with the screw 500.

[0039] When the system is working, after the drive motor 300 is started, the output shaft of the drive motor 300 drives the screw 500 to rotate precisely. The screw 500 converts the rotational motion into linear motion through the threaded engagement with the threaded hole on the lock block 400, thereby realizing linear transmission control of the lock block 400, and finally making the locking tongue 410 at the front end of the lock block 400 accurately engage with the locking groove a of the rotating sleeve 720.

[0040] The drive motor 300 transmission structure provided in this embodiment is reasonably designed and has high transmission efficiency, which can reliably realize the precise control of the drive motor 300 on the locking and unlocking actions of the lock block 400.

[0041] In actual use, when the locking tongue 410 is fully engaged in the locking groove a of the rotating sleeve 720, the entire fuel filler cap actuator enters the locked state, and the fuel filler cap is firmly locked and cannot be opened. When unlocking is required, the drive motor 300 is started, and the screw-nut transmission mechanism designed in this embodiment drives the locking block 400 to move as a whole, so that the locking tongue 410 at the front end of the locking block 400 smoothly retracts from the locking cavity into the motor cavity. At this time, the locking tongue 410 and the rotating sleeve 720 are completely disengaged and no longer produce any mechanical interference, thus successfully realizing the unlocking function of the fuel filler cap actuator, and the fuel filler cap can be opened normally. The entire working process is stable and reliable, and the switching between locking and unlocking actions is smooth.

[0042] To ensure smooth transmission of the drive motor 300 to the lock block 400, in this embodiment, a guide portion 430 is provided on the side of the lock block 400, and a guide groove is provided on the inner wall of the outer shell to cooperate with the guide portion 430 and accommodate the guide portion 430 to move in a straight line.

[0043] Preferably, the guide portion 430 is a protruding structure protruding from the side of the locking block 400. The inner wall of the outer shell is provided with a recess that can accommodate the protruding structure and is adapted to the shape of the guide portion 430. The recess extends along the moving direction of the locking block 400, allowing the guide portion 430 to move linearly.

[0044] Specific reference Figure 7 As shown, in this embodiment, a spiral groove 201 is provided on the outer periphery of the push rod 200, and a limiting protrusion 130 is provided on the inner surface of the locking cavity. The limiting protrusion 130 slides in the spiral groove 201. The push rod 200 rotates when it extends into or pops out of the locking cavity through the cooperation between the limiting protrusion 130 and the spiral groove 201.

[0045] Preferably, the spiral groove 201 rotates at an angle of 90 degrees.

[0046] The limiting protrusion 130 is slidably embedded in the internal space of the spiral groove 201 through a precise fit. Through this precise mechanical fit and synergistic mechanism between the limiting protrusion 130 and the spiral groove 201, the push rod 200 can perform precise rotational movement according to a preset trajectory during the process of axially extending into or ejecting from the locking cavity.

[0047] In use, the rotating assembly 700 drives the push rod 200 to rotate. Through the cooperation of the limiting protrusion 130 and the spiral groove 201, the push rod 200 can move up and down along the trajectory of the spiral groove 201 and rotate 90 degrees. Thus, the drive sleeve 710 drives the rotating sleeve 720 to rotate to achieve the locking or return function.

[0048] In order to achieve comprehensive protection of the outer shell and effectively prevent rainwater, dust and other impurities in the external environment from entering the interior of the outer shell through the actuation groove 101, a protective structure is specially designed in this embodiment.

[0049] Specific reference Figure 4 As shown, a waterproof cover 610 is also injection molded on the outside of the actuating groove 101. The open side of the waterproof cover 610 is connected to the housing 100, forming a limiting space 611 between the cover and the housing 100 that can accommodate the actuating part 420.

[0050] The waterproof cover 610 is a shell 100 structure with an open end and a receiving cavity. The open side is connected to the outer shell and can completely cover the opening area of ​​the actuating groove 101, thus forming a reliable protective barrier to completely prevent rainwater penetration and dust intrusion into the interior of the shell. The actuating part 420 is located inside the receiving cavity of the waterproof cover 610, which can move freely within the receiving cavity to perform functional operation without affecting the protective performance of the waterproof cover 610.

[0051] Meanwhile, in order to ensure that the waterproof cover 610 maintains a stable installation state during long-term use, the waterproof cover 610 is provided with a limiting shoulder 612 on the opening side, and a horizontal clamping groove extends from the side on the limiting shoulder 612. The groove edge of the actuating groove 101 is provided with a clamping rib 110 facing the clamping groove.

[0052] The limiting shoulder 612 extends outward from the outer wall of the opening side of the waterproof cover 610 and extends into the actuating groove 101. This allows the clamping rib 110 at the opening of the actuating groove 101 to engage with the clamping groove of the limiting shoulder 612, thus providing comprehensive restraint and ensuring that the limiting shoulder 612 cannot accidentally detach from the actuating groove 101 under any circumstances. This fundamentally guarantees the reliability of the connection between the waterproof cover 610 and the housing 100, ensuring that the waterproof cover 610 will not detach from the housing 100 during use, thereby continuously providing stable protection.

[0053] Preferred, refer to Figure 5 and Figure 6 As shown, a notch 613 is provided on the portion of the limiting shoulder 612 located on one side of the outer surface of the housing 100. A splicing part 120 that mates with the notch 613 is protruding on the outer surface of the housing 100. During the injection molding process, the limiting shoulder 612 wraps around the three sides of the splicing part 120 so that the splicing part 120 constrains the displacement of the limiting shoulder 612 on the surface of the housing 100, thereby constraining the movement of the waterproof cover 610.

[0054] In addition, in this embodiment, a sealing ring is provided on the locking opening 102, and the sealing ring and the waterproof cover 610 are connected by an insert 630, which is embedded in the groove 103 of the housing 100.

[0055] Specific reference Figure 5 The sealing ring shown is tightly wrapped around the outer periphery of the locking opening 102 by injection molding, and forms a seal with the push rod 200 through an interference fit.

[0056] Preferably, the sealing ring 620 is made of high-performance rubber material. This material has good elasticity and sealing performance, which can effectively wrap the outer peripheral area of ​​the locking port 102, establish a reliable sealing interface between the movable push rod 200 and the fixed locking port 102, and completely prevent rainwater or dust from entering the actuator through the mating gap.

[0057] The waterproof cover 610 and the sealing ring are integrally formed by the insert 630. Made of rubber, the waterproof cover 610 can deform under external force, thereby driving the actuating part 420 located inside the waterproof cover 610. After the actuation is complete, the waterproof cover 610 automatically resets. Simultaneously, the user can confirm the position of the actuating part 420 by pressing both sides of the waterproof cover 610, thus determining the position and status of the locking block 400 and the locking tongue 410.

[0058] To ensure the stability of the sealing ring and the waterproof cover 610, in this embodiment, a limiting part 631 extends from the insert 630, and the limiting part 631 is embedded in the limiting groove 103.1 of the housing 100.

[0059] Preferably, the end of the insert 630 is specially designed with a limiting part 631 structure. The size of the limiting part 631 is larger than the width of the insert 630, and the end of the groove 103 is correspondingly machined into a limiting groove 103.1 that mates with the limiting part 631. This design allows the limiting part 631 to be precisely embedded in the limiting groove 103.1, effectively restraining any horizontal displacement of the insert 630 and ensuring that the insert 630 remains absolutely fixed within the limiting groove 103.1. Through the traction of the insert 630 on the sealing cap 620 and the waterproof cap 610, the insert 630 is completely restricted to the housing 100, while the sealing ring and the waterproof cap 610 are kept stable by the traction of the insert 630, thereby ensuring that the sealing ring and the waterproof cap 610 are firmly and reliably installed on the housing 100.

[0060] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A miniaturized screw-lock pin cover actuator with emergency unlocking function, comprising: The housing (100) has a motor cavity and a locking cavity arranged side by side and communicating inside the housing (100), and the locking cavity has a locking port (102); A push rod (200) is rotatably and vertically disposed in the locking cavity, and one end of the push rod (200) with a locking pin (210) extends out of the locking cavity through the locking port (102); A rotating assembly (700) is provided at the lower end of the push rod (200) to drive the push rod (200) to rotate, thereby unlocking or locking the small door; Its features are: A drive motor (300) is horizontally placed inside the motor cavity, and a locking block (400) is driven on the drive motor (300); the drive motor (300) pushes the locking block (400) toward the rotating assembly (700), so that the locking tongue (410) on the locking block (400) is engaged with the rotating assembly (700) and locks the rotating assembly (700); The locking block (400) is provided with a toggle part (420), and the toggle part (420) extends to the outside of the housing (100). External force can drive the toggle part (420) to manually unlock the rotating assembly (700).

2. The miniaturized screw lock pin cover actuator with emergency unlocking as described in claim 1, characterized in that: The actuating part (420) moves in a straight line along with the locking block (400), and the housing (100) is provided with an actuating groove (101) that matches the moving range of the actuating part (420).

3. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 1 or 2, characterized in that: The rotating assembly (700) includes a drive sleeve (710) and a rotating sleeve (720) arranged sequentially from bottom to top at the lower end of the push rod (200). The side wall of the drive sleeve (710) is provided with a plurality of protrusions (711), and a locking groove (a) is formed between the protrusions (711). The locking tongue (410) is engaged in the locking groove (a) to prevent the rotating sleeve (720) from rotating.

4. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 3, characterized in that: The output end of the drive motor (300) is fitted with a screw (500), and the locking block (400) is provided with a threaded hole that mates with the screw (500).

5. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 2, characterized in that: The actuating groove (101) is also injection molded with a waterproof cover (610). The open side of the waterproof cover (610) is connected to the housing (100), forming a limiting space (611) between the cover and the housing (100) that can accommodate the actuating part (420).

6. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 5, characterized in that: The waterproof cover (610) has a limiting shoulder (612) on its opening side. The limiting shoulder (612) has a horizontal clamping groove extending from the side. The groove edge of the actuating groove (101) has a clamping rib (110) facing the clamping groove.

7. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 5, characterized in that: The locking opening (102) is provided with a sealing ring (620), and the sealing ring (620) and the waterproof cover (610) are connected by a strip (630), which is embedded in the groove (103) of the housing (100).

8. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 7, characterized in that: A limiting part (631) extends from the insert (630) and is embedded in the limiting groove (103.1) of the housing (100).

9. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 1, characterized in that: The lock block (400) has a guide part (430) on its side, and the inner wall of the housing (100) has a guide groove that cooperates with the guide part (430) and accommodates the guide part (430) to move in a straight line.

10. The miniaturized screw lock pin cover actuator with emergency unlocking according to claim 1, characterized in that: The push rod (200) has a spiral groove (201) on its outer periphery, and a limiting protrusion (130) is provided on the inner surface of the locking cavity. The limiting protrusion (130) slides in the spiral groove (201). The push rod (200) rotates when it is inserted into or ejected from the locking cavity, through the cooperation between the limiting protrusion (130) and the spiral groove (201).

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