CN217495850U - A locking means for new energy automobile charging seat - Google Patents
A locking means for new energy automobile charging seat Download PDFInfo
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- CN217495850U CN217495850U CN202221179974.7U CN202221179974U CN217495850U CN 217495850 U CN217495850 U CN 217495850U CN 202221179974 U CN202221179974 U CN 202221179974U CN 217495850 U CN217495850 U CN 217495850U
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Abstract
The utility model discloses a locking means for new energy automobile charging seat, including motor, worm, one-level duplicate gear, stop pin subassembly and emergency unlocking subassembly, the output and the worm of motor are connected, and the worm passes through the one-level duplicate gear to be connected with the stop pin subassembly, and emergency unlocking subassembly is connected with the stop pin subassembly. The utility model discloses simple structure has realized the back locking function of locking of electronic lock, realizes locking charging seat and the rifle that charges of big holding power, prevents that the accident from deviating from, has emergent unlocking power through emergent unblock subassembly and opens the function.
Description
Technical Field
The utility model particularly relates to a locking means for new energy automobile charging seat.
Background
After the new energy automobile electronic lock is developed through the products of several generations, the market has the requirements on the functions from the initial realization of locking the charging gun and the charging seat to the current large-load anti-falling state, the emergency unlocking device cannot follow up and has smaller unlocking force to be convenient for opening, and the like, and an electromagnetic shielding unit is implanted into the product to meet the EMC requirements of the European standard.
Patent document CN 111727531A discloses a locking device for a charging device, which uses a cam and centering structure to realize a self-locking function after an electronic lock is locked. The existing structure relying on the locking of the crank-link mechanism and the self-locking thereof is too complicated, and the unlocking, locking and accidental disengagement prevention functions of the locking mechanism are realized by a simpler structure.
Disclosure of Invention
The to-be-solved technical problem of the utility model is, to the above-mentioned defect that prior art exists, provide a locking means for new energy automobile charging seat, simple structure has realized the back locking function of locking of electronic lock, realizes locking charging seat and the rifle that charges of big holding power, prevents unexpected deviating from, has emergent unlocking power through emergent unblock subassembly and opens the function.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides a locking means for new energy automobile charging seat, includes motor, worm, one-level duplicate gear, stop pin subassembly and emergency unlocking subassembly, and the output and the worm of motor are connected, and the worm passes through one-level duplicate gear to be connected with the stop pin subassembly, and emergency unlocking subassembly is connected with the stop pin subassembly, and the motor is connected with EMC shielding unit.
According to the technical scheme, the primary duplicate gear comprises a screw rod and a screw rod nut, the screw rod nut is sleeved on the screw rod, the worm is meshed with the screw rod nut, and the screw rod is connected with the locking pin.
According to above-mentioned technical scheme, the stop pin subassembly includes stop pin and potentiometre subassembly, is equipped with the connecting plate on the stop pin, and the connecting plate is connected the contact with the potentiometre subassembly, and the potentiometre subassembly is connected with the motor.
According to the technical scheme, the potentiometer assembly comprises a back plate and a detection feedback circuit, a motor is connected with a power supply through the detection feedback circuit, and the motor drives a locking pin to move in a telescopic mode through a worm and a primary duplicate gear;
the detection feedback circuit comprises a plurality of switch branches connected in parallel, each switch branch is connected with a feedback resistor and a switch in series, switch contact blades on each branch are sequentially arranged on the back plate along the telescopic path direction of the locking pin, the resistance values of the feedback resistors on each branch are different, and current or voltage collecting points are arranged at two ends of the detection feedback circuit; the connecting plate is provided with a contact which moves with the locking pin and is connected with the switch contact pieces of different branches on the back plate.
According to the technical scheme, the number of the switch branches is 3, and the switch branches are respectively a first switch branch, a second switch branch and a third switch branch; the first switch branch comprises a feedback resistor R1 and a switch S1 which are sequentially connected in series, the second switch branch comprises a feedback resistor R2 and a switch S2 which are sequentially connected in series, and the third switch branch comprises a feedback circuit R3 and a switch S3 which are sequentially connected in series.
According to the technical scheme, the emergency unlocking assembly comprises a clutch sleeve, an emergency unlocking knob, a conical gear and a transmission gear set, the emergency unlocking knob is connected with the clutch sleeve, the clutch sleeve is sleeved with the conical gear, and the conical gear 7 is meshed with a lead screw nut of the primary duplicate gear through the transmission gear set.
According to the technical scheme, the transmission gear set comprises a secondary duplicate gear and a tertiary duplicate gear, and the screw rod nut is meshed with the bevel gear sequentially through the secondary duplicate gear and the tertiary duplicate gear.
According to the technical scheme, the end face of the clutch sleeve is provided with an arc-shaped block, the end face of the conical gear is provided with an arc-shaped groove, the end face of the clutch sleeve is attached to the end face of the conical gear, the arc-shaped block is arranged in the arc-shaped groove, and the length of the arc-shaped groove is greater than that of the arc-shaped block; when the motor passes through lead screw nut and drives the stop pin and stretch out and draw back to drive conical gear through second grade duplicate gear and tertiary duplicate gear and rotate, because conical gear's arc wall length is greater than the arc piece, can not drive the separation and reunion cover and rotate, and rotate emergent unblock knob, drive the separation and reunion cover and rotate, after the separation and reunion cover rotates the idle stroke of a section arc wall, rotate to the arc wall tip, continue to rotate and drive tertiary duplicate gear and second grade duplicate gear and rotate, drive the lockpin through drive lead screw nut and contract back, realize the unblock.
According to the technical scheme, a locking means for new energy automobile charging seat still include the casing, motor, worm, one-level duplicate gear and EMC shielding unit all set up in the casing, emergent unblock subassembly removes emergent unblock knob and also sets up in the casing.
According to the technical scheme, the EMC shielding unit comprises a first inductor L1, a second inductor L2, a first capacitor C1 and a second capacitor C2, one end of the first inductor L1 is connected with the positive terminal of a power supply, and the other end of the first inductor L1 is connected with one end of the first capacitor C1 and the positive terminal of the motor; one end of the second inductor L2 is connected with the negative terminal of the power supply, the other end of the second inductor L2 is connected with one end of the second capacitor C2 and the negative terminal of the motor, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are connected with the motor shell.
The utility model discloses following beneficial effect has:
1. the utility model discloses simple structure has realized the back locking function of locking of electronic lock, realizes holding power locking charging seat and the rifle that charges greatly, prevents that the accident from deviating from, has emergent unblock power through emergent unblock subassembly and opens the function such as, is applicable to the European standard charging seat through EMC shielding unit.
2. The clutch structure ensures that the emergency unlocking device does not move along with the locking mechanism in the electric unlocking and locking process, and the full-stroke position monitoring and signal feedback in the unlocking and locking process are realized through the design of the position feedback device on the basis.
Drawings
Fig. 1 is a perspective view of a locking device for a new energy vehicle charging seat in an embodiment of the present invention;
fig. 2 is a front view of a locking device for a charging seat of a new energy vehicle according to an embodiment of the present invention;
FIG. 3 is a left side view of FIG. 2;
fig. 4 is a schematic structural diagram of a housing in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a locking device for a charging seat of a new energy vehicle in a housing according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of the locking device for the new energy vehicle charging seat in the embodiment of the present invention with the casing removed;
fig. 7 is a schematic view of the locking pin assembly connected to the motor according to the embodiment of the present invention;
FIG. 8 is a schematic view of a locking pin assembly coupled to an emergency release assembly according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an emergency unlocking assembly in an embodiment of the present invention;
fig. 10 is an exploded view of an emergency unlocking assembly in an embodiment of the present invention;
fig. 11 is an electrical schematic diagram of an EMC shielding unit in an embodiment of the present invention;
in the figure, 1-a motor, 2-a worm, 3-a primary duplicate gear, 4-a locking pin assembly, 5-a potentiometer assembly, 6-a secondary duplicate gear, 7-a conical gear, 8-an emergency unlocking assembly, 9-a tertiary duplicate gear, 10-an EMC shielding unit, 11-a gear mounting seat, 12-a sealing ring, 13-a clutch sleeve, 14-an emergency unlocking knob and 15-a shell.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1-11, the utility model provides an embodiment in a locking means for new energy automobile charging seat, including motor 1, worm 2, one-level duplicate gear 3, stop pin subassembly 4 and emergency unlocking subassembly 8, motor 1's output is connected with worm 2, and worm 2 is connected with stop pin subassembly 4 through one-level duplicate gear 3, and emergency unlocking subassembly 8 is connected with stop pin subassembly 4, and motor 1 is connected with EMC shielding unit 10.
Further, the primary duplicate gear 3 comprises a screw rod and a screw nut, the screw nut is sleeved on the screw rod, the worm 2 is meshed with the screw nut, and the screw rod is connected with the locking pin.
The lead screw nut 3 has an internal thread lead angle not greater than 5 degrees.
Further, the locking pin assembly 4 comprises a locking pin and a potentiometer assembly 5, a connecting plate is arranged on the locking pin and is in contact connection with the potentiometer assembly 5, and the potentiometer assembly 5 is connected with the motor 1.
Further, the potentiometer assembly 5 comprises a back plate and a detection feedback circuit, the motor 1 is connected with a power supply through the detection feedback circuit, and the motor 1 drives the locking pin to move in a telescopic mode through the worm 2 and the primary duplicate gear 3;
the detection feedback circuit comprises a plurality of switch branches connected in parallel, each switch branch is connected with a feedback resistor and a switch in series, switch contact blades on each branch are sequentially arranged on the back plate along the telescopic path direction of the locking pin, the resistance values of the feedback resistors on each branch are different, and current or voltage acquisition points are arranged at two ends of the detection feedback circuit and used for acquiring the current or voltage of the detection feedback circuit; the connecting plate is provided with a contact which moves with the locking pin in a telescopic way and is connected with switch contact plates of different branches on the back plate, so that when the locking pin moves to different positions, the contact enables the switches on different switch branches to be communicated.
Furthermore, the number of the switch branches is 3, and the switch branches are respectively a first switch branch, a second switch branch and a third switch branch; the first switch branch comprises a feedback resistor R1 and a switch S1 which are sequentially connected in series, the second switch branch comprises a feedback resistor R2 and a switch S2 which are sequentially connected in series, and the third switch branch comprises a feedback circuit R3 and a switch S3 which are sequentially connected in series.
Further, the feedback resistor R1 is 11K Ω, the first switching branch is turned on and fed back to the locked state, the feedback resistor R2 is 1.1K Ω, the second switching branch is turned on and fed back to the unlocked state, the feedback resistor R3 is 2.2K Ω, and the third switching branch is turned on and fed back to the intermediate state.
Furthermore, the detection feedback circuit is integrated on a PCB, and the PCB is arranged on the back plate; and both ends of the detection feedback circuit are connected with an ammeter or a voltmeter.
Further, the emergency unlocking assembly 8 comprises a clutch sleeve 13, an emergency unlocking knob 14, a conical gear 7 and a transmission gear set, the emergency unlocking knob 14 is connected with the clutch sleeve 13, the clutch sleeve 13 is sleeved with the conical gear 7, and the conical gear 7 is meshed with a lead screw nut of the first-stage duplicate gear 3 through the transmission gear set.
Further, the transmission gear set comprises a second-level duplex gear 6 and a third-level duplex gear 9, and the lead screw nut is meshed with the bevel gear 7 sequentially through the second-level duplex gear 6 and the third-level duplex gear 9.
The two-stage duplicate gear 6 comprises a first gear, a second gear and a first gear shaft, and the first gear and the second gear are sequentially sleeved on the first gear shaft; the three-stage duplicate gear 9 comprises a third gear, a fourth gear and a second gear shaft, and the third gear and the fourth gear are sequentially sleeved on the second gear shaft; the first gear is meshed with the first-stage duplicate gear lead screw nut, the second gear is meshed with the third gear, and the fourth gear is meshed with the conical gear.
Further, the diameter of the first gear is larger than that of the second gear, and the diameter of the third gear is larger than that of the fourth gear.
Furthermore, an arc-shaped block is arranged on the end surface of the clutch sleeve 13, an arc-shaped groove is arranged on the end surface of the conical gear 7, the end surface of the clutch sleeve 13 is attached to the end surface of the conical gear 7, the arc-shaped block is arranged in the arc-shaped groove, and the length of the arc-shaped groove is greater than that of the arc-shaped block; when motor 1 passes through screw-nut drive stop pin flexible, and drive conical gear 7 through second grade duplicate gear 6 and tertiary duplicate gear 9 and rotate, because conical gear 7's arc wall length is greater than the arc piece, can not drive separation and reunion cover 13 and rotate, and rotate emergent unblock knob 14, drive separation and reunion cover 13 and rotate, separation and reunion cover 13 rotates behind the idle stroke of one section arc wall, rotate to the arc wall tip, continue to rotate and drive tertiary duplicate gear 9 and the rotation of second grade duplicate gear 6, it contracts to drive the lockpin through drive screw-nut and retract, realize the unblock.
Further, a locking means for new energy automobile charging seat still include casing 15, motor 1, worm 2, one-level duplicate gear 3 and EMC shielding unit 10 all set up in casing 15, emergent unblock subassembly 8 removes emergent unblock knob 14 and also sets up in casing 15.
Furthermore, the conical gear 7 is arranged on a shell 15 through a gear mounting seat 11, and a sealing ring 12 is arranged between a clutch sleeve 13 and the shell 15.
Further, the potentiometer assembly 5 of the locking pin assembly 4 is disposed within the housing 15, and the outer end of the locking pin extends out of the housing 15.
Further, the locking pin is provided with two steps in sequence along the length direction.
The EMC shielding unit 10 comprises a first inductor L1, a second inductor L2, a first capacitor C1 and a second capacitor C2, wherein one end of the first inductor L1 is connected with the positive terminal of the power supply, and the other end of the first inductor L1 is connected with one end of the first capacitor C1 and the positive terminal of the motor 1; one end of the second inductor L2 is connected with the negative terminal of the power supply, the other end of the second inductor L2 is connected with one end of the second capacitor C2 and the negative terminal of the motor 1, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are connected with the shell of the motor 1 for grounding.
Be equipped with potentiometre installation department, emergent unlocking device gear installation department, the 11 binding nail position of gear mount pad, EMC shielding unit 10 installation department, motor 1 installation department, locking pin hole and one-level duplicate gear guide structure in casing 15, casing 15 includes base and upper cover, is equipped with corresponding guide rib between base and the upper cover.
The utility model discloses a theory of operation:
the realization of auto-lock after locking: as shown in fig. 7, the motor 1, the worm 2, the primary duplicate gear 3, and the locking pin assembly 4 form a locking mechanism, wherein the primary duplicate gear 3 and the locking pin assembly 4 are driven by a lead screw nut, and the lead angle of the lead screw nut is designed to be smaller than the friction angle thereof, so as to achieve the purpose of self-locking, and the lead angle is generally set to be less than 5 °. When the locking pin is subjected to a rotating moment, the locking pin can still keep self-locking because the opposite-shaped hole matched with the locking pin on the base limits the rotation of the locking pin.
The emergency unlocking is realized without following: as shown in fig. 9 to 10, the emergency unlocking assembly 8 is composed of a gear mounting seat 11, a sealing ring 12, a clutch sleeve 13 and an emergency unlocking knob 14, and the clutch function is realized through the matching of the conical gear 7 and the clutch sleeve 13. After a small idle stroke, the key at the lower end of the clutch sleeve acts on the rib matched with the conical gear 7 by rotating the emergency unlocking knob 14, and then the part shown in fig. 11 is driven to drive the locking pin assembly 4 to retreat, so that the emergency unlocking function is realized. The emergency unlocking knob can be driven to realize self-resetting in the next electric driving process, and in the subsequent electric unlocking process, the clutch sleeve cannot be driven reversely to drive the unlocking knob to follow up due to the idle stroke between the clutch sleeve and the conical gear.
And (3) realizing full-stroke position monitoring: the locking pin assembly 4 can drive the contact piece to move on the potentiometer in the unlocking and locking processes, resistance values corresponding to three on-off states are arranged on the potentiometer, when the contact piece of the potentiometer moves to a corresponding position to trigger a corresponding switch loop, the potentiometer can output a corresponding resistance value signal, and a vehicle can judge the position state of the locking pin at the moment through different resistance value signals.
Implementation of EMC shielding: filtering the electromagnetic signal generated by the motor through an LC filter circuit to reduce the generation of the electromagnetic signal of the electronic lock; the first inductor L1 and the first capacitor C1 form a first low-pass filter circuit, the second inductor L2 and the second capacitor C2 form a second low-pass filter circuit, and the two low-pass filter circuits are of a symmetrical structure. The disturbance signal is an alternating current signal and can be divided into a differential mode part and a common mode part: according to the characteristics of small direct current impedance, large alternating current impedance, large direct current impedance of a capacitor and small alternating current impedance, a differential mode part of a disturbance signal generated by the direct current brushless motor is restrained by the first inductor L1 and the second inductor L2 from conducting outwards, and is conducted along the M +, the first capacitor C1 and the second capacitor C2 and the M-and returned to the interior of the direct current brushless motor; according to the characteristics of small inductance direct current impedance, large alternating current impedance, large capacitance direct current impedance and small alternating current impedance, a common mode part of a disturbance signal generated by the direct current brushless motor can be restrained by the first inductance L1 and the second inductance L2 from conducting outwards, wherein the common mode disturbance signal at the M + end is conducted to a motor shell (grounding point) along the M + and the first capacitance C1, and the common mode disturbance signal at the M-end is conducted to the motor shell (grounding point) along the M-and the second capacitance C2. Through the above, the radiation and conduction suppression of the filter circuit on disturbance signals generated by the motor load is realized, and the radiation and conduction suppression of disturbance can be realized for different frequency bands by adjusting the values of the first inductor L1, the first capacitor C1, the second inductor L2 and the second capacitor C2.
The realization of preventing the lock pin from excessively probing: the lockpin subassembly has set up two pole steps, and after first section height stretched into the space between charging seat and the rifle that charges completely, second section step can be because the hole on the charging seat of unable spy and the quilt separation in the outside to the excessive probing of lockpin has been restricted.
The above is only a preferred embodiment of the present invention, and the scope of the right of the present invention should not be limited by this, so that the equivalent changes made in the claims of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a locking means for new energy automobile charging seat, its characterized in that, includes motor, worm, one-level double gear, stop pin subassembly and emergency unlocking subassembly, and the output and the worm of motor are connected, and the worm passes through one-level double gear and is connected with the stop pin subassembly, and emergency unlocking subassembly is connected with the stop pin subassembly, and the motor is connected with EMC shielding unit.
2. The locking device for the new energy automobile charging seat according to claim 1, wherein the primary duplicate gear comprises a lead screw and a lead screw nut, the lead screw nut is sleeved on the lead screw, the worm is meshed with the lead screw nut, and the lead screw is connected with the locking pin.
3. The locking device for the charging stand of the new energy automobile as claimed in claim 1, wherein the locking pin assembly comprises a locking pin and a potentiometer assembly, the locking pin is provided with a connecting plate, the connecting plate is connected and contacted with the potentiometer assembly, and the potentiometer assembly is connected with the motor.
4. The locking device for the new energy automobile charging seat according to claim 3, wherein the potentiometer assembly comprises a back plate and a detection feedback circuit, the motor is connected with a power supply through the detection feedback circuit, and the motor drives the locking pin to move telescopically through the worm and the primary duplicate gear;
the detection feedback circuit comprises a plurality of switch branches connected in parallel, each switch branch is connected with a feedback resistor and a switch in series, switch contact blades on each branch are sequentially arranged on the back plate along the telescopic path direction of the locking pin, the resistance values of the feedback resistors on each branch are different, and current or voltage collecting points are arranged at two ends of the detection feedback circuit; the connecting plate is provided with a contact which moves with the locking pin in a telescopic way and is connected with the switch contact pieces of different branches on the back plate.
5. The locking device for the charging seat of the new energy automobile as claimed in claim 4, wherein the number of the switching branches is 3, and the switching branches are respectively a first switching branch, a second switching branch and a third switching branch; the first switch branch comprises a feedback resistor R1 and a switch S1 which are sequentially connected in series, the second switch branch comprises a feedback resistor R2 and a switch S2 which are sequentially connected in series, and the third switch branch comprises a feedback circuit R3 and a switch S3 which are sequentially connected in series.
6. The locking device for the new energy automobile charging stand according to claim 2, wherein the emergency unlocking assembly comprises a clutch sleeve, an emergency unlocking knob, a conical gear and a transmission gear set, the emergency unlocking knob is connected with the clutch sleeve, the clutch sleeve is sleeved with the conical gear, and the conical gear is meshed with a lead screw nut of the first-stage duplicate gear through the transmission gear set.
7. The locking device for the new energy automobile charging seat according to claim 6, wherein the transmission gear set comprises a secondary duplicate gear and a tertiary duplicate gear, and the lead screw nut is meshed with the bevel gear sequentially through the secondary duplicate gear and the tertiary duplicate gear.
8. The locking device for the new energy automobile charging stand according to claim 6, wherein an arc-shaped block is arranged on the end surface of the clutch sleeve, an arc-shaped groove is arranged on the end surface of the conical gear, the end surface of the clutch sleeve is attached to the end surface of the conical gear, the arc-shaped block is arranged in the arc-shaped groove, and the length of the arc-shaped groove is greater than that of the arc-shaped block; when the motor passes through lead screw nut and drives the stop pin and stretch out and draw back to drive conical gear through second grade duplicate gear and tertiary duplicate gear and rotate, because conical gear's arc wall length is greater than the arc piece, can not drive the separation and reunion cover and rotate, and rotate emergent unblock knob, drive the separation and reunion cover and rotate, after the separation and reunion cover rotates the idle stroke of a section arc wall, rotate to the arc wall tip, continue to rotate and drive tertiary duplicate gear and second grade duplicate gear and rotate, drive the lockpin through drive lead screw nut and contract back, realize the unblock.
9. The locking device for the new energy automobile charging seat as claimed in claim 1, wherein the locking device for the new energy automobile charging seat further comprises a housing, the motor, the worm, the first-level duplicate gear and the EMC shielding unit are disposed in the housing, and the emergency unlocking component is disposed in the housing except for the emergency unlocking knob.
10. The locking apparatus for the charging stand of the new energy vehicle as claimed in claim 1, wherein the EMC shielding unit comprises a first inductor (L1), a second inductor (L2), a first capacitor (C1) and a second capacitor (C2), one end of the first inductor (L1) is connected to the positive terminal of the power supply, and the other end of the first inductor (L1) is connected to one end of the first capacitor (C1) and the positive terminal of the motor; one end of the second inductor (L2) is connected with the negative end of the power supply, the other end of the second inductor (L2) is connected with one end of the second capacitor (C2) and the negative end of the motor, and the other end of the first capacitor (C1) and the other end of the second capacitor (C2) are connected with the motor shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221179974.7U CN217495850U (en) | 2022-05-17 | 2022-05-17 | A locking means for new energy automobile charging seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221179974.7U CN217495850U (en) | 2022-05-17 | 2022-05-17 | A locking means for new energy automobile charging seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217495850U true CN217495850U (en) | 2022-09-27 |
Family
ID=83353107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221179974.7U Active CN217495850U (en) | 2022-05-17 | 2022-05-17 | A locking means for new energy automobile charging seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217495850U (en) |
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2022
- 2022-05-17 CN CN202221179974.7U patent/CN217495850U/en active Active
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