A cap with overtravel assisted opening and dual seal

Abstract

The application discloses a lid with over-travel assisted opening and double sealing function, comprising: a base; a cover body hinged to the base, the cover body having a locked state and a fully open state; a supporting spring, the supporting spring is always in a compressed state, when the cover body is in the fully open state, the supporting spring provides a torque acting on the cover body, thereby maintaining the opening angle between the cover body and the base; an electromagnetic auxiliary mechanism, the electromagnetic auxiliary mechanism is configured to generate a magnetic repulsion force when the cover body is opened, to provide a starting torque in the initial stage of rotation of the cover body, to assist the cover body to overcome the rotation dead point and enter the subsequent rotation stage, to generate a magnetic attraction force when the cover body is in the locked state, to make the cover body and the base sealingly abut; in the initial stage, the supporting spring is further compressed to accumulate elastic potential energy, in the subsequent rotation stage, the supporting spring releases the elastic potential energy, to push the cover body to continue rotating until it reaches the fully open state. The application solves the contradiction between the opening and sealing of the lid by using the electromagnetic auxiliary mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, and particularly discloses a cover with over-travel assisted opening and double sealing functions. BACKGROUND

[0002] In the modern automobile industry, the cover for refueling or charging of a vehicle is an indispensable part, such as a fuel filler cover, a charging cover, etc. With the development of automobile design, the integration of these covers is getting higher and higher, and they are often integrated with the body panel to improve the aesthetics and aerodynamic performance. At present, a mainstream design is a hidden cover, i.e., the cover panel is flush with the vehicle body, and the user triggers the internal mechanism to make the cover pop up by pressing a specific position of the panel, and then manually opens it completely.

[0003] However, this traditional design has obvious inconvenience in use. Due to the weight of the cover itself and its internal sealing elements, etc., and the friction of the moving parts such as hinges, the initial opening angle of the cover after being pressed to pop up is often very limited, which makes the user unable to make the cover reach the fully open state by one pressing operation, but needs to press it to pop up to a smaller angle first, and then pull it to the maximum opening angle with the hand. This form of cover is not convenient enough in operation process, which affects the user experience.

[0004] Secondly, for the cover with an upturning design, when the cover is opened to the maximum angle, it also needs to be stably kept at the fully open position. Without an effective self-holding mechanism, the heavy cover body has a tendency to close by itself under the action of gravity, which may be closed accidentally when the user is refueling or charging, causing inconvenience to the user.

[0005] In addition, there is a contradiction between the sealing performance and the opening convenience of the traditional cover. If the locking force applied to ensure the sealing performance is too large, it will cause the cover to be difficult to open, and if the locking force is insufficient, it is difficult to ensure that the sealing gasket and the abutting surface form uniform and tight contact. For example, for some new energy vehicles, the sealing performance of the charging cover is insufficient, and rainwater can easily penetrate into the interior when it rains or the vehicle is washed, which may cause short circuit, corrosion and oxidation of the electrical interface, resulting in charging failure or equipment damage. More seriously, in a high-voltage electrical environment, the penetrated rainwater can greatly increase the risk of electric leakage, posing a threat to the personal safety of the user, and therefore needs to be improved. SUMMARY

[0006] The purpose of the present application is to provide a cover with over-travel assisted opening and double sealing functions.

[0007] To achieve the above object, the technical scheme adopted by the present application is as follows: a lid with over-travel auxiliary opening and double sealing functions, comprising: a base; a lid body hinged to the base, the lid body having a locked state and a fully open state; a supporting spring, the supporting spring is always in a compressed state, when the lid body is in the fully open state, the supporting spring provides a torque acting on the lid body, thereby maintaining the opening angle between the lid body and the base; an electromagnetic auxiliary mechanism, the electromagnetic auxiliary mechanism is configured to generate a magnetic repulsion force when the lid body is opened, to provide a starting torque in the initial stage of rotation of the lid body, to assist the lid body to overcome the rotation dead point and enter the subsequent rotation stage, and to generate a magnetic attraction force when the lid body is in the locked state, to make the lid body sealingly abut against the base; in the initial stage, the supporting spring is further compressed to accumulate elastic potential energy, in the subsequent rotation stage, the supporting spring releases the elastic potential energy to push the lid body to continue to rotate until it reaches the fully open state.

[0008] As a preferred, the electromagnetic auxiliary mechanism comprises a permanent magnet and an electromagnet, the permanent magnet is fixedly installed on the lid body, the electromagnet is fixedly installed on the base and connected with a vehicle power supply and a control module; when the lid body is released from the locked state, the electromagnet is configured to be controlled by the control module, and to generate the same magnetic pole as the opposite side of the permanent magnet on the side of the permanent magnet, thereby generating the magnetic repulsion force, the magnetic repulsion force acts on the lid body to drive it to rotate and smoothly overcome the rotation dead point, thereby entering the subsequent rotation stage; when the lid body is in the locked state, the electromagnet is configured to be controlled by the control module, and to generate the opposite magnetic pole of the opposite side of the permanent magnet on the side of the permanent magnet, thereby generating the magnetic attraction force, the magnetic attraction force acts on the lid body to make it sealingly abut against the base.

[0009] Further preferably, the side of the lid body towards the base is provided with an annular sealing gasket, the sealing gasket is fixedly installed on the edge region of the side, and the whole sealing gasket is located within the surface defined by the side, the sealing gasket is configured to sealingly abut against the corresponding outer edge surface of the base when the lid body is in the locked state.

[0010] Further preferably, the sealing gasket comprises a first sealing portion, a second sealing portion and a ring groove portion, the ring groove portion is located between the first sealing portion and the second sealing portion, so that the cross section of the sealing gasket is in the shape of a "U", the permanent magnet is fixedly installed on the ring groove portion, and the height of the permanent magnet is lower than the height of the first sealing portion and the second sealing portion; when the cover is in the locked state, the permanent magnet is magnetically connected with the electromagnet, and the first sealing portion and the second sealing portion are in close abutment with the outer edge surface of the base, so as to realize the sealing between the cover and the base.

[0011] Further preferably, the sealing gasket is arranged on the outside or the inside of the permanent magnet, and the height of the permanent magnet is lower than the height of the sealing gasket.

[0012] As a preferred, the base is provided with a first step and a second step, the first step and the second step form a avoiding cavity, the cover comprises a bent handle and a panel, one end of the bent handle is hingedly connected to one side of the avoiding cavity, the other end is fixedly provided with a mounting plate, the panel is fixedly arranged on the mounting plate, the bent handle is provided with a mounting seat, and the mounting seat is suitable for mounting the supporting spring.

[0013] Further preferably, the supporting spring comprises a first end portion, a second end portion and a torsion spring portion, the first end portion is hingedly connected to the mounting seat, the second end portion is in abutment with one side of the avoiding cavity close to the bent handle, and the first end portion and the second end portion are connected through the torsion spring portion, during the rotation of the cover, the second end portion and the avoiding cavity have no relative displacement.

[0014] As a preferred, the first step is fixedly provided with a Push-Push assembly, the push and abutting rod of the Push-Push assembly is suitable for connecting or separating the cover; when the cover is pressed, the cover pushes the push and abutting rod to stretch and retract, and the push and abutting rod simultaneously rotates to release the locking with the cover; when the cover is pressed again, the cover pushes the push and abutting rod to stretch and retract, and the push and abutting rod simultaneously rotates to lock with the cover again.

[0015] Further preferably, the Push-Push assembly is connected with a detection module configured to detect the connection or separation of the Push-Push assembly and the cover and feed a signal to the control module, and the control module adjusts the magnetic pole direction of the electromagnet through the signal; when the detection module detects that the Push-Push assembly and the cover are in the separation state, the control module controls the electromagnet to generate the same magnetic pole as the opposite surface of the permanent magnet on the side of the permanent magnet; when the detection module detects that the Push-Push assembly and the cover are in the connection state, the control module controls the electromagnet to generate the opposite magnetic pole on the side of the permanent magnet.

[0016] As a preferred, the second step is provided with an indicator light, which is configured to prompt the charging state.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] (1) The same set of electromagnetic auxiliary mechanism is used to solve the contradiction between opening and sealing. In the cover locking state, the electromagnetic auxiliary mechanism generates magnetic attraction force, which can provide uniform and continuous closing force to tightly seal the cover and the base. This way reduces the requirement for mechanical structure strength, so that the required mechanical locking force is reduced while obtaining the same or even better sealing effect. After the cover is unlocked, the electromagnetic auxiliary mechanism generates magnetic repulsion force to provide the initial starting torque for opening the cover, realizing one-time direct opening. The mechanism enables the cover to achieve excellent sealing performance and smooth opening of the cover.

[0019] (2) The electromagnetic auxiliary mechanism and the supporting spring are cooperated to realize that the cover can overcome the rotation dead point under the pushing of the electromagnetic auxiliary mechanism and automatically reach and remain in the fully open state by the potential energy released by the supporting spring through one-time pressing of the user, without the need for secondary manual opening, which simplifies the operation process and significantly improves the user experience.

[0020] (3) When the cover is in the fully open state, the supporting spring in the compressed state can provide a torque acting on the cover and opposite to the closing direction, which effectively balances the gravitational torque of the cover, so that the cover can be stably maintained at the maximum opening angle without user intervention. This design has great benefits for the oil filling or charging application scene, especially for the upturned cover, and does not cause accidental closure of the cover, improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a fully open state of the application.

[0022] Figure 2 is the support spring assembly state in the fully open state of the present application.

[0023] Figure 3 is the support spring assembly state in the fully open state of the present application.

[0024] Figure 4 is the lock state of the present application.

[0025] Figure 5 is the support spring assembly state in the lock state of the present application.

[0026] Figure 6 is the support spring assembly state in the lock state of the present application.

[0027] Figure 7 is the sealing gasket and permanent magnet cross-sectional view of the present application.

[0028] Figure 8 is the support spring of the present application.

[0029] In the figure: 1, base; 11, first step; 12, second step; 13, avoiding cavity; 2, cover; 21, bent handle; 211, mounting plate; 212, mounting seat; 213, sealing gasket; 2131, first sealing part; 2132, second sealing part; 2133, ring groove part; 22, faceplate; 3, support spring; 31, first end part; 32, second end part; 33, torsion spring part; 4, Push-Push assembly; 41, push against top rod; 5, electromagnetic auxiliary mechanism; 51, permanent magnet; 52, electromagnet; 6, indicator light. DETAILED DESCRIPTION

[0030] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0031] In the description of the present application, it should be noted that for orientation words, such as the terms “center”, “transverse”, “longitudinal”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, etc. The orientation and positional relationship shown in the drawing is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0033] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] The preferred embodiments of the present application, as shown in Figures 1 to 8 A lid with over-center assisted opening and double sealing function, comprising: a base 1; a cover 2 hinged to the base 1, the cover 2 having a locked state and a fully open state; a support spring 3, the support spring 3 is always in a compressed state, when the cover 2 is in the fully open state, the support spring 3 provides a torque acting on the cover 2, thereby maintaining the opening angle between the cover 2 and the base 1; an electromagnetic auxiliary mechanism 5, the electromagnetic auxiliary mechanism 5 is configured to generate a magnetic repulsion force when the cover 2 is opened, to provide a starting torque in the initial stage of rotation of the cover 2, to assist the cover 2 to overcome the rotation dead point and enter the subsequent rotation stage, and to generate a magnetic attraction force when the cover 2 is in the locked state, to make the cover 2 and the base 1 sealingly abut; in the initial stage, the support spring 3 is further compressed to accumulate elastic potential energy, in the subsequent rotation stage, the support spring 3 releases the elastic potential energy, to push the cover 2 to continue to rotate until it reaches the fully open state.

[0035] The present application uses the same set of electromagnetic auxiliary mechanism 5 to solve the contradiction between opening and sealing, in the locked state of the cover 2, the electromagnetic auxiliary mechanism 5 generates a magnetic attraction force, which can provide uniform and continuous closing force, making the cover 2 and the base 1 tightly sealed abutment, this way reduces the requirement for mechanical structure strength, so that the required mechanical locking force is reduced while obtaining the same or even better sealing effect; after the cover 2 is unlocked, the electromagnetic auxiliary mechanism 5 generates a magnetic repulsion force, to provide the initial starting torque for opening the cover 2, to achieve one-time direct opening; this mechanism makes the lid realize excellent sealing performance and smooth opening of the cover 2.

[0036] In the traditional lid design, the initial opening angle of the lid after being pressed and lifted is small due to the large weight of the lid itself, especially for the upward turning lid, which causes the user to be unable to make the lid reach the fully open state through one pressing operation, and the lid still needs to be manually pulled to the maximum opening angle, which brings inconvenience in operation and use. The electromagnetic auxiliary mechanism 5 and the supporting spring 3 are cooperated to realize that the lid 2 can overcome the dead point under the pushing of the electromagnetic auxiliary mechanism 5 and automatically reach and remain in the fully open state by the potential energy released by the supporting spring 3 through one pressing of the user, without the need for secondary manual opening, which simplifies the operation process and significantly improves the user experience. In addition, when the lid 2 is in the fully open state, the supporting spring 3 in the compressed state can provide a torque acting on the lid 2 and opposite to the closing direction, which effectively balances the gravitational torque of the lid 2, so that the lid 2 can stably remain at the maximum opening angle without user intervention. This design has great benefits in the application scenarios of refueling or charging, especially for the upward turning lid, and does not cause accidental closure of the lid 2, thereby improving the user experience.

[0037] In addition, it is to be noted that the compression energy storage and release process of the supporting spring 3 is combined with the rotation trajectory of the lid 2. In the initial stage of opening of the lid 2, the supporting spring 3 is further compressed to accumulate energy. At this time, the electromagnetic auxiliary mechanism 5 provides a starting torque. When the lid 2 rotates beyond the dead point into the subsequent stage, the energy stored in the supporting spring 3 is efficiently released and converted into the main power for pushing the lid 2 to continue the opening operation until the lid 2 is fully opened. This phased and cooperative power distribution mode ensures that even for a heavy lid, smooth and reliable automatic opening can be achieved with a small initial starting torque.

[0038] In the embodiment, the base 1 is provided with a first step 11 and a second step 12, and an avoiding cavity 13 is formed between the first step 11 and the second step 12. The lid 2 includes a bent handle 21 and a panel 22. One end of the bent handle 21 is hingedly connected to one side of the avoiding cavity 13, and the other end is fixedly provided with a mounting plate 211. The panel 22 is fixedly arranged on the mounting plate 211. The bent handle 21 is provided with a mounting seat 212, which is adapted to mount the supporting spring 3. The supporting spring 3 includes a first end portion 31, a second end portion 32 and a torsional spring portion 33. The first end portion 31 is hingedly connected to the mounting seat 212, and the second end portion 32 abuts against one side of the avoiding cavity 13 close to the bent handle 21. The first end portion 31 and the second end portion 32 are connected through the torsional spring portion 33. During the rotation of the lid 2, there is no relative displacement between the second end portion 32 and the avoiding cavity 13.

[0039] In this embodiment, the support spring 3 can be designed as a whole M shape, with the torsion spring part 33 located in the middle position, and the first end part 31 and the second end part 32 symmetrically arranged. In this form, during the compression and decompression of the support spring 3, not only the torsion spring part 33 deforms, but also the bending parts of the first end part 31 and the second end part 32 deform, so that the support spring 3 can store or release more uniform elastic potential energy, and the rotation of the cover body 2 is more stable.

[0040] In addition, in this embodiment, the first step 11 is fixedly provided with a Push-Push assembly 4, and the push top rod 41 of the Push-Push assembly 4 is adapted to connect or separate the cover body 2. When the cover body 2 is pressed, the cover body 2 pushes the push top rod 41 to extend or retract, and the push top rod 41 simultaneously rotates to unlock the cover body 2. When the cover body 2 is pressed again, the cover body 2 pushes the push top rod 41 to extend or retract, and the push top rod 41 simultaneously rotates to lock the cover body 2 again.

[0041] The Push-Push assembly 4 usually has a clear “click” sound and a paragraph feeling, which can clearly feedback the locking or unlocking state to the user. In addition, the mechanism can enable the user to only need to press the same position repeatedly to realize locking and unlocking, which conforms to the use intuition of modern electronic products, and does not need additional parts such as a handle, thereby maintaining a simple appearance.

[0042] In combination with the accompanying drawings Figure 3 and the accompanying drawings Figure 6 It can be clearly seen that in the locked state and the fully open state, the support spring 3 is respectively located on the two sides of the line connecting the second end part 32 and the hinged shaft of the bent handle 21. When the support spring 3 is located at the line connecting the second end part 32 and the hinged shaft of the bent handle 21, it is the rotation dead point position. Therefore, from the locked state to the rotation dead point position, the support spring 3 is in a further compressed state and accumulates more elastic potential energy. After passing the rotation dead point position to the fully open state, the support spring 3 gradually decompresses and releases the elastic potential energy to push the cover body 2 to rotate and open to the maximum angle. When the cover body 2 rotates to the maximum angle, i.e. the fully open state, the support spring 3 is still in a compressed state, which provides a spring force to maintain the fully open state of the cover body 2, so as to avoid the cover body 2 from rotating to close due to its own gravity. In this process, an initial starting energy is needed to complete the rotation of the cover body 2 until the support spring 3 passes the rotation dead point position. Only the springing of the push top rod 41 in the Push-Push assembly 4 cannot meet the requirement, and therefore the embodiment provides an electromagnetic auxiliary mechanism 5.

[0043] The electromagnetic auxiliary mechanism 5 comprises a permanent magnet 51 and an electromagnet 52, the permanent magnet 51 is fixedly installed on the cover body 2, the electromagnet 52 is fixedly installed on the base 1 and connected with the vehicle power supply and the control module; when the cover body 2 is in the unlocking state, the electromagnet 52 is configured to be controlled by the control module, and the same magnetic pole as the opposite side of the permanent magnet 51 is generated on the side of the permanent magnet 51, so that the magnetic repulsion force is generated, the magnetic repulsion force acts on the cover body 2 to drive it to rotate and smoothly pass through the rotation dead point, so as to enter the subsequent rotation stage; when the cover body 2 is in the locking state, the electromagnet 52 is configured to be controlled by the control module, and the opposite magnetic pole to the opposite side of the permanent magnet 51 is generated on the side of the permanent magnet 51, so that the magnetic attraction force is generated, the magnetic attraction force acts on the cover body 2 to make it sealingly abut against the base 1, the cover body 2 is provided with a ring-shaped sealing gasket 213 on the side facing the base 1, the sealing gasket 213 is fixedly installed on the edge area of the side and located in the surface defined by the side as a whole, and the sealing gasket 213 is configured to sealingly abut against the corresponding outer edge surface of the base 1 when the cover body 2 is in the locking state.

[0044] The electromagnet 52 realizes the two opposite functions of opening auxiliary and sealing enhancement on the same set of mechanisms by changing the current direction, which is the key to solving the contradiction between sealing and opening convenience mentioned in the background art. The magnetic repulsion force can provide an initial torque far exceeding the traditional spring at the moment of opening the cover body 2, ensuring that the cover body 2 can easily and reliably pass through the rotation dead point, and the magnetic attraction force replaces or partially replaces the mechanical locking force, which can provide a uniform distribution of pressure perpendicular to the sealing surface, significantly improving the sealing effect, and this force will not rapidly decay due to component wear.

[0045] For the actual operation of the electromagnet 52, it is clear that the magnetic attraction force is generated when the cover body 2 is in the locking state to achieve double sealing, and the magnetic repulsion force is generated by the electromagnet 52 after the cover body 2 is in the unlocking state to assist the cover body 2 to pass through the rotation dead point. In order to save energy, the electromagnet 52 can be set to be in the power-off state after the cover body 2 passes through the rotation dead point, in order to ensure that the cover body 2 passes through the rotation dead point, the electromagnet 52 can be preset to generate a magnetic repulsion force for a long time, or a sensor can be added to detect the state of the cover body 2, and the specific design can be adjusted by the person skilled in the art according to the actual situation.

[0046] Of course, in order to achieve a good sealing effect, in the embodiment, the sealing gasket 213 can be designed to include a first sealing portion 2131, a second sealing portion 2132, and a ring groove portion 2133 located between the first sealing portion 2131 and the second sealing portion 2132, so that the cross section of the sealing gasket 213 is in the shape of a "Y", the permanent magnet 51 is fixedly installed on the ring groove portion 2133, and the height of the permanent magnet 51 is lower than the height of the first sealing portion 2131 and the second sealing portion 2132; when the cover 2 is in the locked state, the permanent magnet 51 is magnetically connected with the electromagnet 52, and the first sealing portion 2131 and the second sealing portion 2132 are in close abutment with the outer edge surface on the base 1, thereby achieving the sealing between the cover 2 and the base 1.

[0047] This is a specific structure for achieving double sealing, i.e., the integrated mode of the sealing gasket 213 and the electromagnetic auxiliary mechanism 5; the first sealing portion 2131 and the second sealing portion 2132 constitute two independent sealing barriers, so that even if one sealing is temporarily disabled due to foreign matter or deformation, the other sealing can still function, greatly improving the reliability and safety of the sealing; the permanent magnet 51 is placed in the ring groove portion 2133 of the "Y"-shaped sealing gasket 213, so that the magnetic attraction force directly acts between the two sealing portions, which can most effectively ensure that the two sealing portions are uniformly pressed at the same time, achieving a better sealing effect; the height of the sealing gasket 213 is higher than that of the permanent magnet 51, so that when the cover 2 is closed, the sealing gasket 213 is first contacted and pressed, avoiding direct impact and wear of the permanent magnet 51, and prolonging the service life thereof.

[0048] In the remaining embodiments, the sealing gasket 213 can also be arranged on the outside or inside of the permanent magnet 51, and the height of the permanent magnet 51 is lower than that of the sealing gasket 213. This arrangement can add the permanent magnet 51 without changing the original lid sealing gasket 213, and by correspondingly arranging the electromagnet 52 on the base 1, the function of the present application can be achieved without the need to redesign and arrange the sealing gasket 213, which is suitable for upgrading the existing lid.

[0049] Further, the Push-Push assembly 4 is connected with a detection module configured to detect whether the Push-Push assembly 4 and the cover 2 are in a connected state or a separated state, and feed back a signal to a control module, and the control module adjusts the magnetic pole direction of the electromagnet 52 through the signal; when the detection module detects that the Push-Push assembly 4 and the cover 2 are in a separated state, the control module controls the electromagnet 52 to generate the same magnetic pole as the opposite surface of the permanent magnet 51 on the side facing the permanent magnet 51; when the detection module detects that the Push-Push assembly 4 and the cover 2 are in a connected state, the control module controls the electromagnet 52 to generate a magnetic pole opposite to the opposite surface of the permanent magnet 51 on the side facing the permanent magnet 51.

[0050] The detection module is directly linked with the Push-Push assembly 4, and the detection module can be a micro switch or a sensor integrated in the Push-Push assembly 4 to directly sense the position of the locking tongue or the slider inside; or it can be a simple circuit that detects the state of the Push-Push assembly 4 internal circuit to determine, the logic of the detection module is very simple and direct, that is, the connection state is that the locking tongue is extended and locks the cover 2, and the separation state is that the locking tongue is retracted and releases the cover 2, and the cover 2 state is detected based on the position of the locking tongue or the slider or the state of the circuit; of course, in other embodiments, the detection module can also be an additional independent sensor, for example, a distance sensor can be arranged between the cover 2 and the base 1, since the cover 2 is unlocked, it is necessary to first press down the cover 2, and then the push of the Push-Push assembly 4 will pop up the top rod 41 to lift the cover 2 by a distance, which is greater than the gap distance between the cover 2 and the base 1 in the locked state, so the distance sensor detects that the distance increases, and judges that the cover 2 is unlocked.

[0051] The control module receives the signal of the detection module, and can make decisions according to the preset logic, and the logic of the control module is also very simple and direct, when receiving the connection state signal, an instruction to generate magnetic repulsion force is made, and when receiving the separation state signal, an instruction to generate magnetic attraction force is made, based on such clear logic, the control module, for example, a microcontroller, can control the current direction of the electromagnet 52 through the internal H-bridge driving circuit, thereby changing the magnetic field polarity, and such closed-loop control mode can effectively overcome external interference and ensure the accuracy and reliability of the action, compared with simple open-loop control.

[0052] In this embodiment, the second step 12 is provided with an indicator light 6, which is configured to prompt the charging state, for example, the charging state, which can flash to remind during charging, and can be a green light that is always on to prompt when full, and the specific indication setting can be adjusted according to actual needs.

[0053] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A cap with an over-center assisted opening and dual sealing function, characterized in that, The utility model relates to a cover opening and closing mechanism of a vehicle, comprising: a base; a cover hinged to the base, the cover having a locked state and a fully open state; a support spring always in compression, in the initial stage of the cover turning, the support spring is further compressed to accumulate elastic potential energy, in the subsequent turning stage, the support spring releases the elastic potential energy to push the cover to continue turning until it reaches the fully open state, when the cover is in the fully open state, the support spring provides a torque acting on the cover to maintain the opening angle between the cover and the base; an electromagnetic auxiliary mechanism configured to generate a magnetic repulsion force when opening the cover, providing a starting torque in the initial stage to help the cover overcome the turning dead point and enter the subsequent turning stage, and generating a magnetic attraction force when the cover is in the locked state to make the cover sealingly abut against the base; in the cover opening process, the electromagnetic auxiliary mechanism and the support spring cooperate in stages, the magnetic repulsion force generated by the electromagnetic auxiliary mechanism only provides auxiliary starting force in the initial stage, in the subsequent turning stage, the cover continues to turn to the fully open state relying on the elastic potential energy released by the support spring.

2. A cap of claim 1, wherein, The electromagnetic auxiliary mechanism includes a permanent magnet and an electromagnet, the permanent magnet is fixedly installed on the cover, the electromagnet is fixedly installed on the base and connected with the vehicle power supply and control module; when the cover is released from the locked state, the electromagnet is configured to be controlled by the control module and make one side of the permanent magnet generate the same magnetic pole as the opposite side of the permanent magnet, thereby generating the magnetic repulsion force, the magnetic repulsion force acts on the cover to drive it to turn and smoothly overcome the turning dead point, thereby entering the subsequent turning stage; when the cover is in the locked state, the electromagnet is configured to be controlled by the control module and make one side of the permanent magnet generate the opposite magnetic pole to the opposite side of the permanent magnet, thereby generating the magnetic attraction force, the magnetic attraction force acts on the cover to make it sealingly abut against the base.

3. A cap of claim 2, wherein, The side of the cover facing the base is provided with a ring-shaped sealing gasket, the sealing gasket is fixedly installed on the edge area of the side and located inside the surface defined by the side, the sealing gasket is configured to sealingly abut against the corresponding outer edge surface on the base when the cover is in the locked state.

4. A cap of the type having an over-center assisted opening and dual sealing function as defined in claim 3, wherein: The sealing gasket includes a first sealing part, a second sealing part and a ring groove part, the ring groove part is located between the first sealing part and the second sealing part, so that the cross section of the sealing gasket is "V" shaped, the permanent magnet is fixedly installed on the ring groove part, and the height of the permanent magnet is lower than the height of the first sealing part and the second sealing part; when the cover is in the locked state, the permanent magnet is magnetically connected with the electromagnet, the first sealing part and the second sealing part are tightly abutted against the outer edge surface on the base, thereby realizing the sealing between the cover and the base.

5. A cap of claim 3, wherein The sealing gasket is arranged on the outer side or the inner side of the permanent magnet, and the height of the permanent magnet is lower than the height of the sealing gasket.

6. A cap of claim 2, wherein The base is internally provided with a first step and a second step, and the first step and the second step form an avoiding cavity. The cover includes a bent handle and a panel. One end of the bent handle is hingedly connected to one side of the avoiding cavity, and the other end is fixedly provided with a mounting plate. The panel is fixedly arranged on the mounting plate. An installation seat is arranged on the bent handle, and the installation seat is adapted to install the supporting spring.

7. A cap of the type having an over-center assisted opening and dual sealing function as defined in claim 6, wherein, The supporting spring includes a first end, a second end and a torsion spring portion. The first end is hingedly connected to the installation seat. The second end is abutted on one side of the avoiding cavity close to the bent handle. The first end and the second end are connected through the torsion spring portion. During the rotation of the cover, the second end has no relative displacement with the avoiding cavity.

8. A cap of the type having an over-center assisted opening and dual sealing function as defined in claim 6, wherein, A Push-Push assembly is fixedly arranged on the first step. A pushing top rod of the Push-Push assembly is adapted to connect or separate the cover. When the cover is pressed, the cover pushes the pushing top rod to extend or retract, and the pushing top rod simultaneously rotates to release the locking with the cover. When the cover is pressed again, the cover pushes the pushing top rod to extend or retract, and the pushing top rod simultaneously rotates to lock with the cover again.

9. A cap of the type having an over-center assisted opening and dual sealing function as defined in claim 8, wherein, The Push-Push assembly is connected with a detection module. The detection module is configured to detect whether the Push-Push assembly and the cover are in a connected state or a separated state, and feed back a signal to the control module. The control module adjusts the magnetic pole direction of the electromagnet through the signal. When the detection module detects that the Push-Push assembly and the cover are in the separated state, the control module controls the electromagnet to generate the same magnetic pole as the opposite surface of the permanent magnet on one side of the permanent magnet. When the detection module detects that the Push-Push assembly and the cover are in the connected state, the control module controls the electromagnet to generate the opposite magnetic pole of the permanent magnet on one side of the permanent magnet.

10. A cap of claim 6, wherein, An indicating lamp is arranged on the second step. The indicating lamp is configured to prompt the charging state.

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