Electronic lock actuator for oil gun and charging gun

Abstract

The utility model discloses an electronic lock actuator of a fuel gun and a charging gun, the electronic lock actuator comprises an upper shell and a lower shell, the upper shell is matched above the lower shell to form an outer shell with a cavity, a motor is arranged in the cavity on one side of the outer shell, a gear set driven by the motor is arranged in the cavity on the outer side of the motor, and the gear set is driven by the motor. The output end of the gear set is connected with a rack sliding in the cavity, one end of the rack is connected with a lock rod capable of extending out of the shell for locking, the other end of the rack is connected with an inhaul cable assembly used for manual unlocking, and a microswitch connected with the motor through a conductive terminal is arranged in the cavity outside one side of the gear set. The electronic lock actuator can lock the position of an oil filling gun or a charging gun through the lock rod which automatically extends out of the shell, the oil filling gun or the charging gun is prevented from falling off in the oil filling or charging process, accidents caused by fuel leakage of the oil filling gun or electric leakage of the charging gun are avoided, and the safety performance of the oil filling gun or the charging gun in the using process is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic lock technology, specifically to an electronic lock actuator for a fuel nozzle or charging nozzle. Background Technology

[0002] With the development of automotive technology, cars with different energy consumption types have entered people's lives. Among them, gasoline and electric are the two main types. When refueling gasoline cars or electric cars, fuel nozzles or charging nozzles are used. In the past, during the use of fuel nozzles or charging nozzles, they would occasionally fall off during the refueling or charging process, causing gasoline leakage and fuel combustion and explosion accidents or electric shock accidents to the charging nozzle.

[0003] In response, people have designed an electronic lock that can lock the position of the fuel nozzle or charging nozzle. However, the signal control transmission type of the actuator on the existing electronic lock is limited. Some electronic locks cannot be unlocked when their electronic control components malfunction, which affects people's normal vehicle use. Moreover, the sealing performance of the existing electronic locks is also defective, making them susceptible to external factors and unable to function properly, resulting in poor stability. Utility Model Content

[0004] To address the technical deficiencies in the background technology, this utility model proposes an electronic lock actuator for refueling nozzles and charging nozzles, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0005] An electronic lock actuator for a refueling nozzle or charging nozzle includes an upper housing and a lower housing. The upper housing fits onto the lower housing to form a shell with a cavity. A motor is housed in the cavity on one side of the shell. A gear set driven by the motor is housed in the cavity outside the motor. The output end of the gear set is connected to a rack that slides within the cavity. One end of the rack is connected to a locking rod that extends out of the shell for locking. The other end of the rack is connected to a cable assembly for manual unlocking. A micro switch connected to the motor via a conductive terminal is housed in the cavity outside the gear set.

[0006] As a further embodiment of this utility model, the touch end of the micro switch is located outside one side of the rack, the rack has an outwardly protruding trigger point on the wall surface near the micro switch, the rack wall surface outside the trigger point is a plane, the end face of the trigger point near the micro switch is an inclined plane, and the side of the micro switch away from the touch end is a conductive end connected to a conductive terminal.

[0007] As a further embodiment of this utility model, at least three conductive terminals are provided, wherein the pins of one end of two of the conductive terminals are coupled to two conductive ends of the micro switch, and the pin in the middle of the conductive terminal connected to one conductive end of the micro switch is coupled to the positive terminal of the motor, and one pin of the other conductive terminal is coupled to the negative terminal of the motor, and the pin of the other end of the conductive terminal is led out to the communication interface at the end of the housing.

[0008] As a further embodiment of this utility model, at least four conductive terminals are provided, wherein one pin of one end of two of the conductive terminals is coupled to two conductive terminals of the micro switch, and one pin of the other two conductive terminals is coupled to the positive and negative terminals of the motor respectively, and the pin of the other end of the conductive terminal is led out to the communication interface at the end of the housing.

[0009] As a further embodiment of this utility model, the cable assembly includes a slider, a spring, a sleeve, a cable, a connector, and a hose. The bottom end of the rack is provided with a groove for engaging the slider. Both sides of the slider are provided with protrusions that can abut against the wall surface of the rack away from the locking rod. One end of the slider is fixedly connected to the sleeve. The cable is fitted inside the sleeve and fixedly connected to the slider. The spring is sleeved outside the sleeve. The end of the outer shell away from the locking rod is provided with a mating port. The connector engages with the mating port by snap-fit. The end of the connector outside the outer shell is fitted with a hose. The cable passes through the connector and the hose in sequence and extends to the outside of the outer shell.

[0010] As a further embodiment of this utility model, one end of the connector is provided with a buckle, which is composed of at least two fasteners evenly distributed circumferentially at the end of the connector. The mating port is provided with an insertion port on the wall near the center side of the outer shell. The insertion port is provided with at least two slots circumferentially. After the buckle is inserted into the mating port, the fastener is inserted into the insertion port, and the hook-shaped end of the fastener engages with the slot, thereby realizing the snap-fit ​​mating of the connector and the mating port.

[0011] As a further embodiment of this utility model, the outer wall of the middle part of the connector is provided with a first sealing groove, and a sealing ring is provided in the first sealing groove. After the sealing ring is inserted into the mating port, the outer edge of the sealing ring abuts against the inner wall of the mating port to seal the gap between the connector and the mating port. The end of the connector located outside the shell is provided with a mating port, and the hose is fitted into the mating port by two-color injection molding.

[0012] As a further embodiment of this utility model, the gear set includes a first linkage gear, a second linkage gear, a third linkage gear, and a motor gear. The motor gear is connected to the output end of the motor. The first linkage gear, the second linkage gear, and the third linkage gear are all connected to the cavity through a rotating shaft. The motor gear meshes with the gear ring on the large diameter side of the first linkage gear. The gear ring on the large diameter side of the second linkage gear meshes with the gear ring on the small diameter side of the first linkage gear. The small diameter end of the second linkage gear is a bevel gear, and the large diameter end of the third linkage gear is a gear disc. The small diameter ends of the second linkage gear and the large diameter ends of the third linkage gear are connected by gear tooth meshing. The gear ring on the small diameter side of the third linkage gear meshes with the gear teeth of the rack.

[0013] As a further embodiment of this utility model, one end of the rack is provided with a mating groove with an I-shaped cross section, and one end of the locking rod is a mating part with an I-shaped cross section. The locking rod is connected to the rack through the mating part and the mating groove. A second sealing groove is provided at the position where the locking rod penetrates the outer shell. A sealing element is fitted in the second sealing groove. The locking rod is fitted in the sealing element and slides in the sealing element. The edge of the lower shell is connected to the edge of the upper shell by a welded rib.

[0014] As a further embodiment of this utility model, the cross-section of the inner edge and the outer edge of the sealing member are both wavy, the welding rib is broken on the second sealing groove side, the cross-sectional shape of the sealing member at the broken position of the welding rib is U-shaped, and the end of the welding rib near the sealing groove side is surrounded.

[0015] The beneficial effects of this utility model are as follows: the electronic lock actuator can lock the position of the refueling nozzle or charging nozzle by automatically extending the locking rod outside the housing, preventing the refueling nozzle or charging nozzle from falling off during the refueling or charging process, thereby avoiding accidents caused by fuel leakage or electric leakage of the charging nozzle, enhancing the safety performance of the refueling nozzle or charging nozzle during use. Moreover, the electronic lock actuator has multiple signal control transmission types, a compact overall structure, and excellent sealing performance. It can also be manually unlocked by means of a cable assembly when the electronic control component of the electronic lock actuator malfunctions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the electronic lock actuator.

[0017] Figure 2 This is a schematic diagram of the internal structure of the electronic lock actuator.

[0018] Figure 3 This is a schematic diagram of the structure when a micro switch is engaged with a rack and pinion.

[0019] Figure 4This is a schematic diagram of a micro switch.

[0020] Figure 5 Schematic diagram of rack structure Figure 1 .

[0021] Figure 6 This is a schematic diagram of the connection structure of the first type of conductive terminal.

[0022] Figure 7 This is a schematic diagram of the first type of conductive terminal connection structure at the communication interface.

[0023] Figure 8 This is a schematic diagram of the connection structure for the second type of conductive terminal.

[0024] Figure 9 This is a schematic diagram of the second type of conductive terminal connection structure at the communication interface.

[0025] Figure 10 This is a schematic diagram of the cable assembly.

[0026] Figure 11 This is a schematic diagram of the structure when the connector and the mating port are snapped together.

[0027] Figure 12 This is a schematic diagram of the gear set.

[0028] Figure 13 This is a schematic diagram of the structure when the locking rod is engaged with the rack.

[0029] Figure 14 This is a schematic diagram showing the installation of the seal in the lower housing.

[0030] Figure 15 This is a schematic diagram of the structure where the locking rod passes through the outer casing.

[0031] In the diagram, 1. Outer shell; 11. Upper shell; 12. Lower shell; 13. Mating port; 131. Insert; 1311. Slot; 14. Sealing groove; 141. Seal; 15. Welding rib; 2. Motor; 3. Gear set; 31. First linkage gear; 32. Second linkage gear; 33. Third linkage gear; 34. Motor gear; 4. Rack; 41. Trigger point; 42. Plane; 43. Inclined surface; 44. Slide groove; 45. Mating groove; 5. Locking rod; 51. Mating part; 6. Cable assembly; 61. Slider; 611. Protrusion; 62. Spring; 63. Sleeve; 64. Cable; 65. Connector; 651. Buckle; 6511. Fastener; 652. Sealing groove; 653. Sealing ring; 654. Mating port; 66. Flexible hose; 7. Conductive terminal; 8. Micro switch; 9. Communication interface. Detailed Implementation

[0032] This utility model discloses an electronic lock actuator for a refueling nozzle and a charging nozzle, such as... Figure 1 and Figure 2 As shown, the electronic lock actuator includes an upper housing 11 and a lower housing 12. The upper housing 11 fits above the lower housing 12 to form an outer shell 1 with a cavity. A motor 2 is installed in the cavity on one side of the outer shell 1. A gear set 3 driven by the motor 2 is installed in the cavity outside the motor 2. The output end of the gear set 3 is connected to a rack 4 that slides in the cavity. One end of the rack 4 is connected to a locking rod 5 that can extend out of the outer shell 1 for locking. The other end of the rack 4 is connected to a cable assembly 6 for manual unlocking. A micro switch 8 connected to the motor 2 via a conductive terminal 7 is installed in the cavity outside the gear set 3.

[0033] It should be noted that after receiving the command, the micro switch 8 controls the motor 2 to start. The motor 2 drives the rack 4 to slide in the cavity through the gear set 3. The locking rod 5 extends out of the outer shell 1 as the rack 4 moves, locking the position of the refueling gun or charging gun to prevent the refueling gun or charging gun from falling during the refueling or charging process, so as to avoid accidents caused by fuel leakage of the refueling gun or electric leakage of the charging gun. After the locking rod 5 is electrically locked, if the motor 2 or the micro switch 8 malfunctions, it can be manually unlocked by pulling the manual cable 64. The tight structure can enhance the safety performance when using the refueling gun or charging gun.

[0034] It needs to be further explained that, such as Figures 3-5 As shown, the touch end of the micro switch 8 is located outside one side of the rack 4. The wall surface of the rack 4 near the micro switch 8 has an outwardly protruding trigger point 41. The wall surface of the rack 4 outside the trigger point 41 is a plane 42. The end face of the trigger point 41 near the micro switch 8 is an inclined plane 43. The side of the micro switch 8 away from the touch end is the conductive end connected to the conductive terminal 7.

[0035] Specifically, the rack 4 is designed with a trajectory that contacts the trigger point 41 of the micro switch 8. The trajectory is designed from low to high. In the unlocked state, it is in a free state. The wall of the rack 4 at the position of plane 42 does not contact the micro switch 8. The trigger point 41 is the critical point when the normally open point of the micro switch 8 is closed, and the signal is conducted. To ensure the stability of the signal conduction, the rack 4 needs to move a certain distance to reach the peak position of the trigger point 41. This increases the trigger amount of the micro switch 8 and ensures the stability of the output signal.

[0036] It needs to be further explained that, such as Figure 6 and Figure 7As shown, at least three conductive terminals 7 are provided. Two of the conductive terminals 7 have pins at one end coupled to two conductive terminals of the micro switch 8. The pin in the middle of the conductive terminal 7 connected to one conductive terminal of the micro switch 8 is coupled to the positive terminal of the motor 2. The other conductive terminal 7 has one pin coupled to the negative terminal of the motor 2. The pin at the other end of the conductive terminal 7 is led out to the communication interface 9 at the end of the housing 1.

[0037] The conductive terminal 7 mentioned above is connected in a three-pin single-position feedback manner. The signal feedback does not require a separate signal power supply and is on the same line as the motor 2 power supply, which can reduce the number of input power lines.

[0038] It needs to be further explained that, such as Figure 8 and Figure 9 As shown, at least four conductive terminals 7 are provided. Two of the conductive terminals 7 have pins at one end coupled to two conductive terminals of the micro switch 8. The other two conductive terminals 7 have pins at one end coupled to the positive and negative terminals of the motor 2, respectively. The pins at the other end of the conductive terminals 7 are led out to the communication interface 9 at the end of the housing 1.

[0039] The conductive terminal 7 mentioned above is connected in a four-pin single-position feedback manner. The signal feedback requires a separate signal power supply, and the signal capture is not affected by the operation of the motor 2.

[0040] It needs to be further explained that, such as Figure 10 and Figure 11 As shown, the cable assembly 6 includes a slider 61, a spring 62, a sleeve 63, a cable 64, a connector 65, and a hose 66. The bottom end of the rack 4 is provided with a groove 44 for engaging the slider 61. Both sides of the slider 61 are provided with protrusions 611 that can abut against the wall surface of the rack 4 away from the locking rod 5. One end of the slider 61 is fixedly connected to the sleeve 63. The cable 64 is fitted inside the sleeve 63 and fixedly connected to the slider 61. The spring 62 is sleeved outside the sleeve 63. The end of the outer shell 1 away from the locking rod 5 is provided with a mating port 13. The connector 65 engages with the mating port 13 by snap-fit. The end of the connector 65 outside the outer shell 1 is fitted with a hose 66. The cable 64 passes through the connector 65 and the hose 66 in sequence and extends to the outside of the outer shell 1.

[0041] Pulling the cable 64 in the opposite direction to the locking rod 5 causes the slider 61 to slide within the channel formed by the lower housing 12 and the slide groove 44. The protrusions 611 on both sides of the slider 61 abut against the side wall of the rack 4, causing the rack 4 to move in the opposite direction to the locking rod 5. Since the locking rod 5 is connected to the rack 4, the locking rod 5 will move in the opposite direction to the locking rod 5, thereby realizing the manual emergency unlocking of the refueling gun or charging gun.

[0042] Specifically, such as Figure 10 and Figure 11 As shown, one end of the connector 65 is provided with a buckle 651, which is composed of at least two fasteners 6511 evenly distributed circumferentially at the end of the connector 65. The mating port 13 is provided with an insertion port 131 on the wall near the center side of the outer shell 1. The insertion port 131 is provided with at least two slots 1311 circumferentially. After the buckle 651 is inserted into the mating port 13, the fasteners 6511 are inserted into the insertion port 131, and the hook-shaped end of the fastener 6511 engages with the slot 1311 to achieve the engagement between the connector 65 and the mating port 13.

[0043] By engaging the buckle 651 and the slot 1311, the connector 65 and the mating port 13 can be connected, thereby quickly fixing the cable 64 onto the housing 1, which facilitates the installation of the cable assembly 6.

[0044] Specifically, such as Figure 10 and Figure 11 As shown, the outer wall of the middle part of the connector 65 is provided with a first sealing groove 652, and a sealing ring 653 is provided in the first sealing groove 652. After the buckle 651 is inserted into the mating port 13, the outer edge of the sealing ring 653 abuts against the inner wall of the mating port 13 to seal the gap between the connector 65 and the mating port 13. The end of the connector 65 located outside the outer shell 1 is provided with a mating port 654, and the hose 66 is fitted into the mating port 654 by two-color injection molding.

[0045] The connector 65 is sealed with an O-ring 653 at the position where it fits into the housing 1, thereby sealing the exit point of the cable 64 and preventing foreign objects from interfering with the movement of the cable 64. The cable assembly 6 is made of hard and soft rubber through two-color injection molding, so that the hard and soft rubber molecules are completely fused together to form a seal. Moreover, the above structure can meet the IP67 sealing performance requirements.

[0046] It needs to be further explained that, such as Figure 12As shown, the gear set 3 includes a first linkage gear 31, a second linkage gear 32, a third linkage gear 33, and a motor gear 34. The motor gear 34 is connected to the output end of the motor 2. The first linkage gear 31, the second linkage gear 32, and the third linkage gear 33 are all connected to the cavity through a rotating shaft. The motor gear 34 meshes with the gear ring on the large diameter side of the first linkage gear 31. The gear ring on the large diameter side of the second linkage gear 32 meshes with the gear ring on the small diameter side of the first linkage gear 31. The small diameter end of the second linkage gear 32 is a bevel gear, and the large diameter end of the third linkage gear 33 is a gear disc. The small diameter ends of the second linkage gear 32 and the large diameter ends of the third linkage gear 33 are connected by gear teeth meshing. The gear ring on the small diameter side of the third linkage gear 33 meshes with the teeth of the rack 4.

[0047] In this system, motor 2 drives motor gear 34 to rotate, which in turn drives first linkage gear 31. Then, first linkage gear 31 drives second linkage gear 32, which in turn drives third linkage gear 33 through the connection between bevel gear and gear plate on second linkage gear 32. Finally, third linkage gear 33 drives rack 4, thereby converting rotational motion into linear motion. The rack 4 moves linearly, pushing locking rod 5 to extend outside or retract inside housing 1, thus achieving the electric locking or unlocking function of refueling gun or charging gun.

[0048] It needs to be further explained that, such as Figure 13 As shown, one end of the rack 4 is provided with a mating groove 45 with an I-shaped cross section, and one end of the locking rod 5 is a mating part 51 with an I-shaped cross section. The locking rod 5 is connected to the rack 4 through the mating part 51 and the mating groove 45. A second sealing groove 14 is provided at the position where the locking rod 5 penetrates the outer shell 1. A sealing element 141 is fitted in the second sealing groove 14. The locking rod 5 is fitted in the sealing element 141 and slides in the sealing element 141. The edge of the lower shell 12 is connected to the edge of the upper shell 11 by a welding rib 15.

[0049] The locking rod 5 is sealed along its movement path by the sealing element 141 to prevent foreign objects from affecting its movement. The housing is designed with a full-circle welded rib 15. The laser passes through the upper housing 11 and melts the plastic at the welded rib 15, so that the upper housing 11 and the lower housing 12 are melted and bonded together by intermolecular affinity, achieving a good sealing effect.

[0050] Specifically, such as Figure 14 and Figure 15As shown, the sealing element 141 has a wavy cross-section on both the inner and outer edges of the locking rod 5. The welding rib 15 is broken on the side of the second sealing groove 14. The cross-sectional shape of the sealing element 141 at the broken position of the welding rib 15 is U-shaped, and it surrounds the end of the welding rib 15 near the side of the second sealing groove 14.

[0051] Among them, the sealing element 141 provides interference sealing to the bottom surface of the upper housing 11 and the top surface of the lower housing 12. At the weld break point of the upper housing 11 and the lower housing 12, the sealing ring 653 wraps the weld break point on three sides to form a sealing structure, thereby further enhancing the sealing performance of the entire housing 1.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electronic lock actuator for a fuel dispenser, electric vehicle charging dispenser, comprising an upper housing and a lower housing, characterized in that, The upper housing fits onto the lower housing to form an outer shell with a cavity. A motor is installed in the cavity on one side of the outer shell. A gear set driven by the motor is installed in the cavity outside the motor. The output end of the gear set is connected to a rack that slides in the cavity. One end of the rack is connected to a locking rod that can extend out of the outer shell for locking. The other end of the rack is connected to a cable assembly for manual unlocking. A micro switch connected to the motor via a conductive terminal is installed in the cavity outside the gear set.

2. The electronic lock actuator of claim 1, wherein, The touch end of the micro switch is located outside one side of the rack. The rack has an outwardly protruding trigger point on the wall surface near the micro switch. The rack wall surface outside the trigger point is a plane. The end face of the trigger point near the micro switch is an inclined plane. The side of the micro switch away from the touch end is a conductive end connected to a conductive terminal.

3. The electronic lock actuator of claim 1, wherein, The conductive terminals are provided at least three, wherein the pins of one end of two of the conductive terminals are coupled to two of the conductive terminals of the micro switch, and the pin in the middle of the conductive terminal connected to one of the conductive terminals of the micro switch is coupled to the positive terminal of the motor, and one pin of the other conductive terminal is coupled to the negative terminal of the motor, and the pin of the other end of the conductive terminal is led out to the communication interface at the end of the housing.

4. The electronic lock actuator of claim 1, wherein, The conductive terminals are provided at least four, of which two of the conductive terminals have pins at one end coupled to two of the conductive terminals of the micro switch, and one pin of the other two conductive terminals are coupled to the positive and negative terminals of the motor respectively, and the pins at the other end of the conductive terminals are led out to the communication interface at the end of the housing.

5. The electronic lock actuator of claim 1, wherein, The cable assembly includes a slider, a spring, a sleeve, a cable, a connector, and a hose. The bottom end of the rack has a groove for engaging the slider. Both sides of the slider have protrusions that can abut against the wall surface of the rack away from the locking rod. One end of the slider is fixedly connected to the sleeve. The cable engages inside the sleeve and is fixedly connected to the slider. The spring is sleeved outside the sleeve. The end of the housing away from the locking rod has a mating port. The connector engages with the mating port by snap-fit. The end of the connector outside the housing is fitted with a hose. The cable passes through the connector and the hose in sequence and extends to the outside of the housing.

6. The electronic lock actuator of claim 5, wherein, One end of the connector is provided with a buckle, which consists of at least two fasteners evenly distributed around the end of the connector. The mating port is provided with an insertion port on the wall near the center of the outer shell. The insertion port is provided with at least two slots around its circumference. After the buckle is inserted into the mating port, the fasteners are inserted into the insertion port and the hook-shaped ends of the fasteners engage with the slots to achieve the snap-fit ​​mating of the connector and the mating port.

7. The electronic lock actuator of claim 5, wherein, The outer wall of the middle part of the connector is provided with a first sealing groove, and a sealing ring is provided in the first sealing groove. After the buckle is inserted into the mating port, the outer edge of the sealing ring abuts against the inner wall of the mating port to seal the gap between the connector and the mating port. The end of the connector located outside the shell is provided with a mating port, and the hose is fitted into the mating port by two-color injection molding.

8. The electronic lock actuator according to claim 1, characterized in that, The gear set includes a first linkage gear, a second linkage gear, a third linkage gear, and a motor gear. The motor gear is connected to the output end of the motor. The first linkage gear, the second linkage gear, and the third linkage gear are all connected to the cavity through a rotating shaft. The motor gear meshes with the gear ring on the large diameter side of the first linkage gear. The gear ring on the large diameter side of the second linkage gear meshes with the gear ring on the small diameter side of the first linkage gear. The small diameter end of the second linkage gear is a bevel gear, and the large diameter end of the third linkage gear is a gear disc. The small diameter ends of the second linkage gear and the large diameter ends of the third linkage gear are connected by gear tooth meshing. The gear ring on the small diameter side of the third linkage gear meshes with the teeth of a rack.

9. The electronic lock actuator of claim 1, wherein, One end of the rack is provided with a mating groove with an I-shaped cross section, and one end of the locking rod is a mating part with an I-shaped cross section. The locking rod is connected to the rack through the mating part and the mating groove. A second sealing groove is provided at the position where the locking rod penetrates the outer shell. A sealing element is fitted in the second sealing groove. The locking rod is fitted in the sealing element and slides in the sealing element. The edge of the lower shell is connected to the edge of the upper shell by a welded rib.

10. The electronic lock actuator of claim 9, wherein, The sealing element has a wavy cross-section on both the inner and outer edges of the locking rod. The welding rib is broken on the second sealing groove side. The cross-sectional shape of the sealing element at the broken welding rib position is U-shaped and surrounds the end of the welding rib near the sealing groove side.

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