Electronic locking device of new energy automobile

Abstract

The utility model discloses an electronic locking device of a new energy automobile, which comprises a bottom shell (3) used for accommodating internal components; the gear transmission assembly (1) comprises a motor (9), a worm (10), a bevel gear assembly (11) and a ball screw (18), and the gear transmission assembly drives the worm (10) to rotate through the motor (9), drives the bevel gear assembly (11) to conduct transmission and controls the lock rod (4) to move front and back through the ball screw (18); and the lock rod (4) is connected with the ball screw (18) through a lock rod fixing piece (21), and the lock rod is locked or unlocked along with the axial movement of the ball screw. According to the electronic locking device of the new energy automobile, the worm gear / helical tooth-worm-ball screw structure is adopted, the retaining force of the locking device and the movement precision of the locking rod are greatly improved, the gun pulling or stealing behavior by mistake is effectively prevented, the springback phenomenon of the locking rod in the locking or unlocking process can be prevented through the structure, and the service life of the locking rod is prolonged. The stability of the locking state is guaranteed, the problem of signal loss caused by springback of the lock rod is reduced, and therefore the reliability and safety of the whole system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicles, in particular to an electronic locking device for new energy vehicles. BACKGROUND

[0002] With the popularization of new energy vehicles, the safety and convenience of electric vehicles are increasingly demanding, and the safety guarantee during charging is particularly important. In order to prevent the charging gun from being mistakenly pulled out or stolen during charging, the electronic locking device has become an indispensable part of the charging pile system. The traditional electronic locking device usually realizes the locking function through motor, gear, rack and other structures, which can effectively control the up-down or forward-backward movement of the lock rod. However, the existing technology has some obvious defects in the structure design and use performance of the electronic locking device, which needs to be improved.

[0003] In the existing electronic locking device, the motor is usually engaged with the spur gear to drive the gear rack system to move the lock rod. However, due to the limitation of the gear rack structure, the lock rod is prone to large rebound during locking or unlocking, resulting in insufficient positioning accuracy of the lock rod, small holding force, affecting the reliability of the locking, and even causing loss of feedback signal. At the same time, the cost of using metal gear reduction box in the existing technology is high, and it is easily affected by external environment such as salt mist, resulting in corrosion and wear, affecting the durability and stability of the equipment.

[0004] In addition, the manual emergency unlocking device is an important part of the electronic locking system, which is used for emergency unlocking operation when the electronic system fails. However, the existing manual unlocking device is directly connected with the transmission mechanism, and the unlocking force is large when unlocking, especially in low temperature environment or when the transmission system is stuck, which may cause the manual unlocking to fail. At the same time, the manual emergency pull rope is prone to wear and tear with the waterproof seal during long-term use, thereby affecting the sealing performance of the entire device.

[0005] Therefore, the existing electronic locking device has the defects of insufficient locking accuracy, complex structure, difficult manual unlocking and insufficient waterproof performance, which cannot meet the safety and reliability requirements in the charging scene of new energy vehicles. SUMMARY

[0006] In order to solve the above problems, the present application provides an electronic locking device for new energy vehicles, which aims to improve the holding force and accuracy of the locking mechanism, improve the reliability of manual emergency unlocking, and enhance the waterproof performance of the equipment to meet the charging safety requirements of modern new energy vehicles.

[0007] The present application is realized by the following technical scheme: an electronic locking device for new energy vehicles, comprising:

[0008] A bottom shell for accommodating internal components;

[0009] A gear transmission assembly including a motor, a worm, a bevel gear assembly, an intermediate transmission gear, and a ball screw, the gear transmission assembly drives the bevel gear assembly to rotate by driving the worm to rotate by the motor, one end of the bevel gear assembly is engaged with the intermediate transmission gear, the bevel gear assembly drives the intermediate transmission gear to rotate, the intermediate transmission gear is engaged with the ball screw to drive the ball screw to rotate, and the ball screw controls the forward and backward movement of the locking rod;

[0010] A locking rod, the locking rod is connected with the ball screw through a locking rod fixing member, and the locking rod is locked or unlocked along with the axial movement of the ball screw;

[0011] A signal feedback assembly including a signal feedback PCBA board, for detecting the locking and unlocking state of the locking rod, and feeding back signals to the control end;

[0012] A manual unlocking pull rope connected with the ball clutch, when the manual unlocking pull rope is pulled, the ball clutch moves backward by the traction of the manual unlocking pull rope, drives the ball sleeve and the ball to move, at this time, the ball is disconnected with the ball screw, and since the locking rod is installed on the locking rod fixing member, when the pull rope is pulled, the locking rod fixing member moves backward as a whole, and further makes the ball screw disconnected with the ball, the ball sleeve and the ball clutch, so as to realize the unlocking operation;

[0013] An upper cover matched with the bottom shell, encapsulating the device and protecting the internal components.

[0014] As a preferred technical solution, the motor, the worm and the bevel gear assembly are installed on a bracket, the worm is driven to rotate by the motor, the bevel gear assembly is driven to rotate, and the ball screw is further driven to rotate, so as to control the movement of the locking rod.

[0015] As a preferred technical solution, the locking rod is installed on the ball screw through the locking rod fixing member, and moves axially along with the rotation of the ball screw, so as to realize the locking or unlocking function.

[0016] As a preferred technical solution, the emergency unlocking hook is separated from the motor and the gear transmission assembly through an emergency unlocking hook return spring, when the manual unlocking is performed, the pull rope pulls the emergency unlocking hook to move backward, so that the ball clutch is separated from the ball screw, and the manual unlocking is realized.

[0017] As a preferred technical solution, the sealing gasket is installed on the locking rod, for preventing the moisture and other external pollutants from entering the inside of the device, and improving the waterproof performance of the device.

[0018] As a preferred technical solution, the signal feedback assembly cooperates with the locking rod fixing member through the signal feedback PCBA board, detects the movement state of the locking rod, and provides the locking or unlocking signal feedback.

[0019] As a preferred technical solution, the ball screw is connected with the lock rod through a clutch structure, the lock rod is separated from the motor transmission assembly in the clutch state, and the lock rod is engaged with the ball screw and moves with the rotation of the ball screw in the non-clutch state.

[0020] As a preferred technical solution, the ball clutch is always pressed against the ball under the action of the emergency unlocking pull hook return spring to prevent the ball from being separated from the ball screw.

[0021] As a preferred technical solution, when the electronic lock is in the locking or unlocking process, the motor drives the ball screw to rotate, the lock rod fixing member moves along the screw, and the lock rod moves with the fixing member to complete the locking or unlocking action.

[0022] As a preferred technical solution, it also includes a sealing gasket, which is sleeved on the lock rod for sealing and waterproofing.

[0023] The beneficial effects of the present application are: the present application provides an electronic locking device for new energy vehicles, which adopts a worm gear / oblique tooth-worm screw-ball screw structure, greatly improves the holding force of the locking device and the precision of the lock rod movement, and effectively prevents the mispulling or stealing of the gun. The structure design can prevent the rebound phenomenon of the lock rod during the locking or unlocking process, ensure the stability of the locking state, reduce the signal loss problem caused by the rebound of the lock rod, and thus improve the reliability and safety of the whole system.

[0024] In the present application, the clutch structure is adopted between the transmission system and the lock rod, so that the entire transmission mechanism does not need to be driven when manually unlocking in emergency, and the lock rod can be separated and unlocked only by pulling the pull rope, reducing the operation force required for manual unlocking, and being particularly suitable for low temperature and other special environments. At the same time, this design effectively avoids the long-term friction between the pull rope and the transmission mechanism and the sealing element, prolongs the service life of the pull rope and the sealing assembly, and improves the waterproof performance and reliability of the entire device.

[0025] In addition, the present application adopts a modular design, which simplifies the assembly process through integrated components, facilitates automated production, improves production efficiency, and reduces manufacturing costs. Modularization also facilitates later maintenance and replacement of parts, further improving the practicality and maintainability of the product. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any inventive labor.

[0027] Figure 1 is a schematic view of the total assembly of the present application;

[0028] Figure 2 is a schematic view of the gear assembly of the present application;

[0029] Figure 3 is a schematic view of the non-clutch state of the present application Figure 1 ;

[0030] Figure 4 is a schematic view of the non-clutch state of the present application Figure 2 ;

[0031] Figure 5 is a schematic view of the clutch state of the present application Figure 1 ;

[0032] Figure 6 is a schematic view of the clutch state of the present application Figure 2 ;

[0033] Figure 7 is a schematic view of the electrically locked state of the present application Figure 1 ;

[0034] Figure 8 is a schematic view of the electrically locked state of the present application Figure 2 ;

[0035] Figure 9 is a schematic view of the electrically unlocked state of the present application Figure 1 ;

[0036] Figure 10 is a schematic view of the electrically unlocked state of the present application Figure 2 . DETAILED DESCRIPTION

[0037] All of the features disclosed in this specification, and / or all of the steps of any method or process specified in this specification, can be combined in any combination, unless specific combinations are excluded herein.

[0038] Any of the features disclosed in this specification, unless explicitly stated otherwise, or any of the steps of any method or process specified in this specification, unless explicitly stated otherwise, can be replaced by alternatives equivalents or similar features.

[0039] As shown in the drawings, the electronic locking device of a new energy vehicle of the present application comprises a bottom shell (3) for accommodating internal components; Figure 1

[0040] ​The gear transmission assembly 1 includes a motor 9, a worm gear 10, a helical gear assembly 11, an intermediate transmission gear 22, and a ball screw 18. The gear transmission assembly 1 drives the worm gear 10 to rotate via the motor 9, which in turn drives the helical gear assembly 11 to transmit power. One end of the helical gear assembly 11 meshes with the intermediate transmission gear, and the helical gear assembly 11 drives the intermediate transmission gear 22 to rotate. The intermediate transmission gear 22 meshes with the ball screw 18 for transmission, and the ball screw 18 controls the forward and backward movement of the locking rod 4.

[0041] Locking rod 4, which is connected to ball screw 18 via locking rod fixing member 21, and the locking rod locks or unlocks as it moves axially with the ball screw;

[0042] The manual unlocking pull rope 15 is connected to the ball clutch 20. When the manual unlocking pull rope 15 is pulled, the ball clutch 20 moves backward by the pull of the manual unlocking pull rope 15, causing the ball sleeve 23 and the ball 24 to move together. At this time, the ball 24 is disengaged from the ball screw 18.

[0043] Since the locking rod 4 is installed on the locking rod fixing part 21, when the pull rope 15 is pulled, the locking rod fixing part 21 moves backward as a whole, thereby causing the ball screw 18 to disengage from the ball 24, the ball sleeve 23 and the ball clutch 20, thus realizing the unlocking operation.

[0044] When manual unlocking is completed and the pull rope 15 is released, the ball clutch 20 returns to its initial position under the action of the return spring 19, the ball 24 re-engages with the ball screw 18, and the connection between the locking rod 4 and the motor 9 is restored. The electronic locking device can resume normal electric locking and unlocking operations.

[0045] The signal feedback component, including the signal feedback PCBA board 2, is used to detect the locking and unlocking status of the locking lever and feed the signal back to the control terminal;

[0046] The top cover 7, which mates with the bottom shell 3, encapsulates the device and protects the internal components.

[0047] Specifically, such as Figure 1 As shown, after assembling and fixing the gear transmission assembly 1, signal feedback PCBA board 2, and bottom shell 3, the locking rod 4 is fixed to the gear transmission assembly 1 by a pin, and the sealing gasket 5 is inserted into the locking rod for sealing and waterproofing. Then, the emergency unlocking mechanism 6 is assembled into the bottom shell 3. After all components are assembled, the top cover 7 is assembled with the bottom shell 3. Finally, the connector cable assembly 8 is assembled into the tail connector in the gear transmission assembly 1 in the slot of the top cover 7.

[0048] like Figure 2As shown, the transmission in the gear assembly 1 is assembled in the bracket 12 through the motor 9, worm 10, bevel gear assembly 11, and then powered through the gear assembly PCBA board 13, and is transmitted in combination with the screw motion assembly 14. The screw motion assembly 14 adopts a ball screw clutch structure, and in the manual unlocking state, the screw motion assembly 14 can separate the connection between the motor 9, worm 10, bevel gear assembly 11 and the locking rod 4, improve the manual unlocking reliability, reduce the manual emergency unlocking force, and increase the locking rod ejection force and the locking rod holding force by using the worm (bevel) gear principle in the whole gear assembly, thereby preventing the locking rod from rebounding.

[0049] As shown in Figures 3-6 When the electronic lock is in the non-clutch state, the ball clutch 20 is always pressed against the ball 24 under the action of the emergency unlocking hook return spring 16 to prevent the ball 24 from being separated from the ball screw 18. When the electronic locking device performs the electric locking / unlocking action, the motor 9 drives the ball screw 18 to rotate, and then drives the locking rod fixing piece 21 to move forward / backward, and the locking rod 4 assembled on the screw motion assembly 14 moves forward / backward with the locking rod fixing piece 21 to achieve the locking / unlocking purpose. In the normal state, the pull rope 15 assembled on the emergency unlocking hook 17 is separated from the motor 9 and the screw motion assembly 14 under the action of the emergency unlocking hook return spring 16, and does not move with the locking rod 4. When the electronic locking device performs the manual emergency unlocking action, the pull rope 15 drives the emergency unlocking hook 17 to move backward, and the ball clutch 20 is pulled backward, and the ball 24 is squeezed outward under the action of the static ball screw 18 to make the ball 24 separated from the ball screw 18, so that the locking rod 4 is separated from the motor 9. At this time, pulling the pull rope 15 can drive the locking rod 4 to move backward to achieve the unlocking purpose. The pull rope 15 drives the locking rod 4 to move backward, which compresses the emergency unlocking hook return spring 16 and the emergency unlocking hook return spring 16. When the pull rope 15 is released, the emergency unlocking hook 17 is reset under the action of the emergency unlocking hook return spring 16, and the ball clutch 20 is reset to the initial state under the action of the emergency unlocking hook return spring 16, so as to top the ball 24 back to the meshing state with the ball screw 18, and the electronic lock returns to the non-clutch state, and the electronic lock can normally perform the electric locking / unlocking.

[0050] As shown in Figures 1-10 The ball clutch 20 is installed outside the ball sleeve 23, and one or more balls 24 are installed in the ball sleeve 23, and the ball clutch 20 is used to press the ball 24.

[0051] As shown in Figure 7 and Figure 8As shown, in the normal electric locking process, the ball clutch 20 is always pressed against the ball 24 to prevent the ball 24 from being separated from the ball screw 18 under the action of the emergency unlocking pull hook reset spring 16. When the electronic locking device performs the electric locking action, the motor 9 drives the ball screw 18 to rotate, and then drives the lock rod fixing member 21 to move forward, and the lock rod 4 assembled on the screw movement assembly 14 moves forward with the lock rod fixing member 21, thereby achieving the locking purpose. At the same time, the lock rod fixing member 21 triggers the signal feedback PCBA board 2 during the forward movement, and feeds back the locking signal to the control end. At this time, the pull rope 15 fixed on the emergency unlocking pull hook 17 is separated from the motor 9 screw movement assembly 14 under the action of the emergency unlocking pull hook reset spring 16, and does not move with the lock rod.

[0052] As shown in Figure 9 and Figure 10 As shown, in the normal electric locking process, the ball clutch 20 is always pressed against the ball 24 to prevent the ball 24 from being separated from the ball screw 18 under the action of the emergency unlocking pull hook reset spring 16. When the electronic locking device performs the electric locking action, the motor 9 drives the ball screw 18 to rotate, and then drives the lock rod fixing member 21 to move forward, and the lock rod 4 assembled on the screw movement assembly 14 moves forward with the lock rod fixing member 21, thereby achieving the locking purpose. At the same time, the lock rod fixing member 21 triggers the signal feedback PCBA board 2 during the forward movement, and feeds back the locking signal to the control end. At this time, the pull rope 15 fixed on the emergency unlocking pull hook 17 is separated from the motor 9 screw movement assembly 14 under the action of the emergency unlocking pull hook reset spring 16, and does not move with the lock rod.

[0053] The basic working principle is as follows:

[0054] The ball is assembled on the ball sleeve and limited, and then the ball clutch is sleeved on the ball to fix and limit, and then the emergency unlocking pull hook reset spring is assembled, the ball clutch is pushed forward, so that the ball clutch presses the ball, and then it is assembled in the fixing member. Since the lock rod is assembled on the lock rod fixing member after the finished product is finally made, the bolt 25 is fixed on the lock rod fixing member, and the unlocking is that the lock rod fixing member is pulled back by the emergency unlocking pull hook, the spring is compressed, and then the ball is separated. The lock rod fixing member also has the function of triggering the microswitch signal to feed back the position of the electronic lock lock rod, whether it is in the locking or unlocking state, that is, triggering the signal feedback PCBA board as a signal feedback.

[0055] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement without creative labor should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.

Claims

1. An electronic locking device for a new energy vehicle, characterized in that, The utility model relates to a kind of emergency unlocking device, including: Bottom shell (3) for accommodating internal components; Emergency unlocking pull hook (17); Gear transmission assembly (1), including motor (9), worm (10), helical gear assembly (11), intermediate transmission tooth (22), ball screw (18), the gear transmission assembly (1) is driven worm (10) rotation by motor (9), drive helical gear assembly (11) transmission, the helical gear assembly (11) one end is engaged with the intermediate transmission tooth, helical gear assembly (11) drives the intermediate transmission tooth (22) rotation, the intermediate transmission tooth (22) the ball screw (18) engagement transmission, by the ball screw (18) control lock rod (4) front and back movement; Lock rod (4), the lock rod is connected with ball screw (18) by lock rod fixing part (21), and lock rod moves axially with the axial movement of ball screw and locks or unlocks; Signal feedback assembly, including signal feedback PCBA board (2), for detecting the locking and unlocking state of lock rod, and providing signal feedback to control end; Ball clutch (20) is installed outside ball sleeve (23), more than one ball (24) is installed in ball sleeve (23), and ball clutch (20) is pressed ball (24); Manual unlocking pull rope (15) is connected with ball clutch (20), when pulling manual unlocking pull rope (15), ball clutch (20) is moved back by the traction of manual unlocking pull rope (15), drives ball sleeve (23) and ball (24) to move together, at this time, ball (24) is disconnected with ball screw (18); Since lock rod (4) is installed on lock rod fixing part (21), when pulling pull rope (15), lock rod fixing part (21) moves back as a whole, and then makes ball screw (18) separate from ball (24), ball sleeve (23) and ball clutch (20), so as to realize unlocking operation; Upper cover (7) cooperates with bottom shell (3), encapsulates the device and protects internal components.

2. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: Motor (9), worm (10) and helical gear assembly (11) are installed on bracket (12), drive worm rotation by motor, and drive helical gear assembly to drive ball screw (18) to rotate to control the movement of lock rod (4) further.

3. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: Lock rod (4) is installed on ball screw (18) by lock rod fixing part (21), and moves axially with the rotation of ball screw, so as to realize locking or unlocking function.

4. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: Emergency unlocking pull hook (17) is separated from motor (9) and gear transmission assembly by emergency unlocking pull hook return spring (16), when manually unlocking, pull rope (15) pulls emergency unlocking pull hook (17) to move back, makes ball clutch (20) separate from ball screw (18), realizes manual unlocking.

5. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: Signal feedback assembly cooperates with lock rod fixing part (21) by signal feedback PCBA board (2), detects the movement state of lock rod, and provides locking or unlocking signal feedback.

6. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: The ball screw (18) is connected with the lock rod (4) through a clutch structure. In the clutch state, the lock rod (4) is separated from the motor transmission assembly. In the non-clutch state, the lock rod (4) is engaged with the ball screw (18) and moves with the rotation of the ball screw.

7. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: The ball clutch (20) always presses against the ball (24) under the action of the emergency unlocking pull hook reset spring (16) to prevent the ball (24) from being separated from the ball screw (18).

8. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: When the electronic lock is in the locking or unlocking process, the motor (9) drives the ball screw (18) to rotate, the lock rod fixing piece (21) moves along the screw rod, and the lock rod (4) moves with the fixing piece (21) to complete the locking or unlocking action.

9. The electronic locking device of a new energy vehicle according to claim 1, characterized in that: It also includes a sealing gasket (5) which is sleeved on the lock rod for sealing and waterproofing. The sealing gasket (5) is sleeved on the lock rod (4).

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