CN112681906B - Motorcycle oil tank lock and motorcycle - Google Patents
Motorcycle oil tank lock and motorcycle Download PDFInfo
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- CN112681906B CN112681906B CN202011563929.7A CN202011563929A CN112681906B CN 112681906 B CN112681906 B CN 112681906B CN 202011563929 A CN202011563929 A CN 202011563929A CN 112681906 B CN112681906 B CN 112681906B
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Abstract
The invention discloses a motorcycle fuel tank lock, which comprises a lock seat, a decorative ring arranged on the lock seat, a lock cylinder mechanism hinged with the decorative ring, and a locking slide block mechanism arranged on the lock seat and used for radially limiting the lock cylinder mechanism; the lock cylinder mechanism comprises a lock body hinged on the decorative ring, a knob rod arranged in a rotating fit with the lock body, a positioning guide pillar arranged at the bottom of the knob rod, a lock tongue arranged in the lock body and a lock body rotating assembly arranged between the positioning guide pillar and the lock tongue; the knob pole rotates and drives the lock body runner assembly and rotate and then drive the spring bolt along lock body radial direction reciprocating motion, and the steel ball structure is opened through the anti-violence that the lock body bottom set up to this technical scheme's oil tank lock, effectively avoids the operator violence to open the lock core, through opening and closing of solenoid valve and micro-gap switch's the accurate effectual control spring bolt of cooperation, overall structure more has the science and technology to feel and brings better experience simultaneously for the user and feels.
Description
Technical Field
The invention relates to the field of locks, in particular to a motorcycle oil tank lock and a motorcycle.
Background
The existing motorcycle fuel tank lock is mainly unlocked by a traditional mechanical key, has no scientific and technological sense and experience sense, and is complicated to operate because the key needs to be drawn out during refueling; if the fuel tank lock is dragged in a pull rope mode, a button needs to be operated by large force, experience is poor, a mechanical key needs to be carried along in a traditional key opening mode, the key needs to be inserted into a lock cylinder for operation when the fuel tank lock is opened, and the fuel tank lock is very inconvenient to carry or open by the mechanical key; and especially when the lock is opened by using a mechanical key, the high-displacement and high-value motorcycle also greatly influences the user experience.
Simultaneously, traditional motorcycle fuel tank lock rotates the very complicacy of the overall structure design that the knob drove the spring bolt and open, and the fuel tank lock does not have the mechanism that anti-riot power was opened, is damaged by violence easily, also adopts traditional mechanical structure to the spacing of spring bolt, and its overall structure reaction is rapid inadequately, lacks the science and technology and feels.
Therefore, a motorcycle fuel tank lock is needed to solve the above problems.
Disclosure of Invention
In view of the above, the invention provides a motorcycle fuel tank lock, which effectively prevents an operator from violently opening a lock cylinder by an anti-violence opening steel ball structure arranged at the bottom of a lock body, accurately and effectively controls the opening and closing of a lock tongue by the matching of an electromagnetic valve and a microswitch, and has an overall structure with better scientific and technological sense and better experience sense for the user.
A motorcycle fuel tank lock comprises a lock seat, a decorative ring arranged on the lock seat, a lock cylinder mechanism hinged with the decorative ring, and a locking slide block mechanism arranged on the lock seat and used for radially limiting the lock cylinder mechanism; the lock cylinder mechanism comprises a lock body hinged on the decorative ring, a knob rod arranged in a rotating fit with the lock body, a positioning guide pillar arranged at the bottom of the knob rod, a lock tongue arranged in the lock body and a lock body rotating assembly arranged between the positioning guide pillar and the lock tongue; the knob rod rotates to drive the lock body rotating assembly to rotate so as to drive the lock tongue to reciprocate along the radial direction of the lock body.
Furthermore, the lock seat comprises a lock tube formed by extending downwards along the axial direction and an annular seat body formed by extending along the circumferential direction of the lock tube, the end part of the knob rod extends into the lock tube and is fixedly connected with the positioning guide pillar, the lock body rotating assembly comprises a spring arranged in the positioning guide pillar, a driving lock ring arranged on the upper end surface of the positioning guide pillar and sleeved on the knob rod, a steel ball arranged between the spring and the driving lock ring and a driving lock sleeve sleeved on the knob rod and clamped with the driving lock ring; the positioning guide column, the driving lock ring and the driving lock sleeve are coaxially sleeved on the knob rod.
Furthermore, two spring mounting holes for mounting springs are formed in the positioning guide pillars, two steel ball sliding grooves used for matching with steel balls are formed in the lower surface of the driving locking ring, the inner surface of the driving locking ring protrudes inwards along the radial direction to form locking ring protrusions, and the two locking ring protrusions are symmetrically arranged relative to the axial direction of the driving locking ring.
Further, the driving lock sleeve comprises a lower lock sleeve ring and a lock sleeve shifting block which is formed by upward protrusion along the axis direction of the lower lock sleeve ring, and two lock sleeve grooves which are matched with the lock ring protrusion for use are formed in the lower end part of the lower lock sleeve ring.
Furthermore, the whole body of the radial section of the lock tongue is of a convex structure, an L-shaped hole through which a knob rod can pass is formed in the lock tongue, the lock sleeve shifting block is arranged at the bottom of the L-shaped hole in a fitting manner, the front end of the lock tongue is provided with a lock tongue guide pillar used for being matched with the locking slide block mechanism, and the axial section of the front end of the lock tongue is of an arc structure.
Further, the lock body is including setting up in the lock pipe be used for installing lock body rotating assembly's lock body lower part, be used for installing spring bolt lock body middle part, along the upwards bellied lock body upper portion in lock body middle part and set up in lock body upper portion and be used for the articulated lock body articulated portion of installing on decorating the circle, and the lock body middle part is the loop configuration and lock body middle part is provided with and is used for carrying out the lock body limiting plate of radial direction to the spring bolt, set up the spring bolt mounting hole that can supply the radial outward motion of spring bolt on the lock body middle part of loop configuration.
Furthermore, an annular decorative inclined plane for axially limiting the lock tongue is arranged in the decorative ring; the locking sliding block mechanism is arranged in the annular seat body and comprises a shell, a sliding block penetrating through the shell, an electromagnetic valve used for radially limiting the sliding block and a microswitch electrically connected with the electromagnetic valve; the slider separates the separation blade including the slider body that wholly is "L" type structure and the slider that sets up on the slider body, set up on the slider body and be used for the slider recess with spring bolt guide pillar cooperation use, the slider separates to be formed with between separation blade and the slider body and is used for the arc induction surface with micro-gap switch cooperation use.
Furthermore, the lock body bottom overcoat has the enhancement base, be provided with the oil blanket pad of overcoat in the lock body on the enhancement base, be provided with breather valve and drain pipe on the lock seat.
Furthermore, the end part of the lock tube is provided with a reinforcing rib, and a compression spring is arranged between the sliding block and the shell.
Further, the motorcycle fuel tank lock is the motorcycle fuel tank lock according to any one of claims 1 to 9.
The invention has the beneficial effects that:
the invention provides a motorcycle fuel tank lock, which effectively prevents an operator from violently opening a lock cylinder through an anti-violence opening steel ball structure arranged at the bottom of a lock body, accurately and effectively controls the opening and closing of a lock tongue through the matching of an electromagnetic valve and a microswitch, and has a more scientific and technological sense and a better experience sense for a user.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic view of the structure of B-B of the present invention;
FIG. 2 is a top view of the present invention;
figure 3 is an exploded view of the lock body rotating assembly;
FIG. 4 is a schematic structural view of the lock body;
FIG. 5 is a schematic view of a knob stem;
FIG. 6 is a schematic structural view of a locking slider mechanism;
FIG. 7 is a schematic diagram of a front structure of a slider;
FIG. 8 is a schematic view of a slider backside structure;
FIG. 9 is an electrical schematic diagram of the solenoid valve and the microswitch.
FIG. 10 is a top view of the slider mounting.
Reference numerals
A knob stem 1; a lock body 2; a decorative ring 3; a slider 4; a housing 5; a lock tongue 6; a housing gasket 7; a slider support post 8; a lock body limit plate 9; driving the locking ring 10; a positioning guide post 11; a spring 12; steel balls 13; the driving sleeve 14; a reinforcing base 15; a seal ring 16; an oil seal 17; a lock base 18; a latch bolt press plate 19; a lock body hinge 21; an annular decorative bezel 31; a steel ball chute 101; a lock ring protrusion 102; a lock sleeve groove 141; a lock sleeve shift block 142; a latch bolt guide post 61; an arc-shaped induction surface 41; a slider groove 42; a slider spacer 43; a solenoid valve stop face 44; a microswitch 45; a solenoid valve 46; a reinforcing rib 181; compressing the spring 51.
Detailed Description
FIG. 1 is a schematic view of the structure of B-B of the present invention; FIG. 2 is a top view of the present invention; figure 3 is an exploded view of the lock body rotating assembly; FIG. 4 is a schematic structural view of the lock body; FIG. 5 is a schematic view of a knob stem; FIG. 6 is a schematic structural view of a locking slider mechanism; FIG. 7 is a schematic diagram of a front structure of a slider; FIG. 8 is a schematic view of a slider backside structure; FIG. 9 is a schematic diagram of the electrical connection between the solenoid valve and the microswitch, and FIG. 10 is a top view of the slider; as shown in the figure, the motorcycle fuel tank lock comprises a lock base 18, a decorative ring 3 arranged on the lock base 18, a lock cylinder mechanism hinged with the decorative ring 3, and a locking slide block mechanism arranged on the lock base and used for radially limiting the lock cylinder mechanism; the lock cylinder mechanism comprises a lock body 2 hinged on the decorative ring 3, a knob rod 1 arranged in a rotating fit with the lock body 2, a positioning guide pillar 11 arranged at the bottom of the knob rod 1, a lock bolt 6 arranged in the lock body 2 and a lock body rotating assembly arranged between the positioning guide pillar 11 and the lock bolt 6; knob pole 1 rotates and drives the lock body runner assembly and rotate and then drive the spring bolt along lock body radial direction reciprocating motion, and steel ball structure is opened to the anti-riot power that sets up through the lock body bottom to the fuel tank lock of this technical scheme, effectively avoids the operator violently to open the lock core, through opening and closing of the accurate effectual control spring bolt of solenoid valve and micro-gap switch's cooperation, overall structure more has the science and technology to feel and brings better experience simultaneously for the user and feels.
In this embodiment, the lock base 18 includes a lock tube (i.e. a tubular structure downward in the vertical direction in fig. 1) formed to extend downward along the axial direction and an annular base body (the annular structure is used to integrate and mount other components) formed along the circumferential direction of the lock tube, the end of the knob rod 1 extends into the lock tube and is fixedly connected with the positioning guide post 11, the lock body rotating assembly includes a spring 12 disposed in the positioning guide post 11, a driving lock ring 10 disposed on the upper end surface of the positioning guide post 11 and externally sleeved on the knob rod 1, a steel ball 13 disposed between the spring 12 and the driving lock ring 10, and a driving lock sleeve 14 externally sleeved on the knob rod 1 and mounted in a clamping manner with the driving lock ring 10; the positioning guide post 11, the driving lock ring 10 and the driving lock sleeve 14 are coaxially sleeved on the knob rod 1. The lock body rotating assembly is arranged in the lock tube, the knob rod 1 rotates to drive the positioning guide pillar 11 to rotate, a spring in the positioning guide pillar 11 abuts against the steel ball 13 and rotates along with the positioning guide pillar 11, the steel ball 13 drives the driving lock ring 10 to rotate, the driving lock ring 10 further drives the driving lock sleeve 14 to rotate, and the driving lock sleeve 14 is matched with the lock tongue 6 to use so as to realize the reciprocating linear motion of the lock tongue 6.
In this embodiment, two spring mounting holes for mounting the spring 12 are formed in the positioning guide post 11, two steel ball sliding grooves 101 for cooperating with the steel balls are formed in the lower surface of the driving locking ring 10, the inner surface of the driving locking ring protrudes inward in the radial direction to form two locking ring protrusions 102, and the two locking ring protrusions 102 are symmetrically arranged with respect to the axial direction of the driving locking ring. The steel ball sliding groove 101 is used in cooperation with the steel ball 13, when an operator normally opens the rotary knob rod 1, the steel ball rotates in the steel ball sliding groove 101 to drive the driving lock ring 10 to rotate, when the operator violently opens the oil tank lock, the torsional force of the rotary knob rod 1 is too large, the steel ball can be separated from the steel ball sliding groove 101 to enable the rotary knob rod to idle, and therefore the oil tank lock is protected, the axial cross section of the steel ball sliding groove 101 is in an isosceles trapezoid shape, the steel ball 13 can conveniently slide away from the steel ball sliding groove 101 when being violently opened, the locking ring bulge 102 is arranged to facilitate combination with the driving lock sleeve 14, and the driving lock sleeve 14 is driven to rotate together when the rotary knob rod rotates.
In this embodiment, the driving lock sleeve 14 includes a lower lock sleeve ring and a lock sleeve shifting block 142 formed by protruding upwards along the axial direction of the lower lock sleeve ring, and two lock sleeve grooves 141 used in form-fit with the lock ring protrusion are provided on the lower end of the lower lock sleeve ring. The driving lock sleeve 14 is composed of a lower lock sleeve ring and a lock sleeve shifting block 142, the lock sleeve shifting block 142 protrudes from the upper surface of the lower lock sleeve ring, the contact surface of the lock sleeve shifting block 142 and the lock tongue is fitted with the inner wall of the hole bottom of the L-shaped hole in the lock tongue in a form fit manner, the lock sleeve groove 141 is used for being connected with the lock ring protrusion 102 to achieve torque transmission, and the lock sleeve shifting block 142 is used for driving the lock tongue 6 to move.
In this embodiment, the whole radial (vertical direction in fig. 3, axial direction is perpendicular to the axial direction) cross section of the lock tongue 6 is in a "convex" shape, an "L" shaped hole through which the knob rod 1 can pass is formed in the lock tongue 6, the lock sleeve shifting block 142 is attached to the bottom of the "L" shaped hole, the front end of the lock tongue is provided with a lock tongue guide post 61 used for being matched with the locking slider mechanism, and the axial cross section of the front end of the lock tongue is in an arc shape. The middle part of the lock tongue is provided with an L-shaped hole for fitting with the lock sleeve shifting block 142, the L-shaped hole is convenient for installing the lock sleeve shifting block 142, and the lock tongue guide post 61 is used for fitting with the slide block 4, so that the lock tongue 6 can be locked or unlocked conveniently.
In this embodiment, the lock body is including setting up in the lock pipe and being used for installing lock body rotating assembly's lock body lower part, be used for installing spring bolt lock body middle part, along the upwards bellied lock body upper portion in lock body middle part and set up and be used for the articulated portion 21 that articulates the lock body of installing on decorating the circle on lock body upper portion, and the lock body middle part is the loop configuration and lock body middle part is provided with and is used for carrying out the lock body limiting plate 9 of radial direction to the spring bolt, set up the spring bolt mounting hole that can supply the radial outside motion of spring bolt on the lock body middle part of loop configuration. The spring bolt mounting hole sets up along radial direction and is convenient for spring bolt 6 and slider 4 cooperation to use, and lock body limiting plate 9 realizes making the rotary motion of knob pole 1 become the linear motion of spring bolt 6 simultaneously to the spacing of spring bolt 6.
In this embodiment, the decoration ring 3 is internally provided with an annular decoration inclined surface 31 for axially limiting the lock tongue; the axial section of the front end of the lock tongue is of an arc structure and is matched with the annular decorative inclined plane 31 in a shape fitting manner, so that when the lock tongue is driven, the lock tongue can be opened smoothly after retreating (namely moving along the axial direction) is finished, the locking slide block mechanism is arranged in the annular seat body and comprises a shell 5, a slide block 4 penetrating through the shell 5, an electromagnetic valve 46 for limiting the slide block 4 in the radial direction and a micro switch 45 electrically connected with the electromagnetic valve; the slider 4 comprises a slider body which is integrally of an L-shaped structure and a slider separation blade 43 arranged on the slider body, a slider groove 42 used for being matched with the bolt guide post is formed in the slider body, and an arc-shaped induction surface 41 used for being matched with the micro switch is formed between the slider separation blade 43 and the slider body. The electromagnetic valve limiting surface 44 is used for being matched with an electromagnetic valve for use, the electromagnetic valve drives an electromagnetic valve limiting column (the electromagnetic limiting column is a part of the electromagnetic valve) to stretch and retract so as to lock or open the sliding block, the micro switch is matched with the arc-shaped induction surface 41 for use, when the knob rod 1 rotates, the sliding block 4 moves along the radial direction, the arc-shaped induction surface 41 is contacted with the micro switch to provide an electric signal, so that the electromagnetic valve drives the electromagnetic limiting column to retract, and therefore the sliding block can open the lock tongue.
In this embodiment, the bottom of the lock body is externally sleeved with a reinforcing base 15, the reinforcing base 15 is provided with an oil seal pad 17 externally sleeved on the lock body, and the lock seat is provided with a vent valve and a drain pipe. Strengthen base 15 and still provide an installation face when playing protection lock body rotating assembly, the installation of the oil blanket sealing ring of being convenient for, breather valve and drain pipe are convenient for realize interior exhaust drainage effect.
In this embodiment, lock pipe tip is provided with strengthening rib 181, and strengthening rib 181 plays the guard action to inner structure when refueling, prevents that the oil gun from inserting the remaining part of touching, set up compression spring 51 between slider and the casing, compression spring prevents that the slider from kick-backing.
In this embodiment, the motorcycle is provided with the motorcycle fuel tank lock.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. A motorcycle fuel tank lock is characterized in that: the lock comprises a lock seat, a decorative ring arranged on the lock seat, a lock cylinder mechanism hinged with the decorative ring and a locking slide block mechanism arranged on the lock seat and used for radially limiting the lock cylinder mechanism; the lock cylinder mechanism comprises a lock body hinged on the decorative ring, a knob rod arranged in a rotating fit with the lock body, a positioning guide pillar arranged at the bottom of the knob rod, a lock tongue arranged in the lock body and a lock body rotating assembly arranged between the positioning guide pillar and the lock tongue; the knob rod rotates to drive the lock body rotating assembly to rotate so as to drive the lock tongue to reciprocate along the radial direction of the lock body; the lock body rotating assembly comprises a spring arranged in the positioning guide pillar, a driving lock ring arranged on the upper end surface of the positioning guide pillar and sleeved on the knob rod, a steel ball arranged between the spring and the driving lock ring, and a driving lock sleeve sleeved on the knob rod and clamped with the driving lock ring; the positioning guide column, the driving lock ring and the driving lock sleeve are coaxially sleeved on the knob rod.
2. A motorcycle fuel tank lock according to claim 1, characterized in that: the positioning guide pillar is provided with two spring mounting holes for mounting springs, the lower surface of the driving locking ring is provided with two steel ball sliding grooves for matching with steel balls, the inner surface of the driving locking ring protrudes inwards along the radial direction to form two locking ring protrusions, and the two locking ring protrusions are symmetrically arranged relative to the axial direction of the driving locking ring.
3. A motorcycle fuel tank lock according to claim 2, characterized in that: the driving lock sleeve comprises a lower lock sleeve ring and a lock sleeve shifting block which is formed by upward protrusion along the axis direction of the lower lock sleeve ring, and two lock sleeve grooves which are matched with the lock ring protrusion for use are formed in the lower end part of the lower lock sleeve ring.
4. A motorcycle fuel tank lock according to claim 3, characterized in that: the lock bolt is characterized in that the radial section of the lock bolt is integrally of a convex structure, an L-shaped hole through which a knob rod can pass is formed in the lock bolt, the lock sleeve shifting block is arranged at the bottom of the L-shaped hole in a fitting manner, the front end of the lock bolt is provided with a lock bolt guide pillar used in cooperation with a locking sliding block mechanism, and the axial section of the front end of the lock bolt is of an arc structure.
5. A motorcycle fuel tank lock according to claim 4, characterized in that: the lock body is including setting up the lock body lower part that is used for installing the lock body runner assembly in the lock tube, be used for installing spring bolt lock body middle part, along the upwards bellied lock body upper portion in lock body middle part and set up and be used for the articulated lock body articulated portion of installing on decorating the circle on lock body upper portion, and the lock body middle part is ring structure and lock body middle part and is provided with the lock body limiting plate that is used for carrying out radial direction to the spring bolt, set up the spring bolt mounting hole that can supply the radial outward movement of spring bolt on ring structure's the lock body middle part.
6. A motorcycle fuel tank lock according to claim 4, characterized in that: an annular decorative inclined plane for axially limiting the lock tongue is arranged in the decorative ring; the locking sliding block mechanism is arranged in the annular seat body and comprises a shell, a sliding block penetrating through the shell, an electromagnetic valve used for radially limiting the sliding block and a microswitch electrically connected with the electromagnetic valve; the slider separates the separation blade including the slider body that wholly is "L" type structure and the slider that sets up on the slider body, set up on the slider body and be used for the slider recess with spring bolt guide pillar cooperation use, the slider separates to be formed with between separation blade and the slider body and is used for the arc induction surface with micro-gap switch cooperation use.
7. A motorcycle fuel tank lock according to claim 6, characterized in that: the lock body bottom overcoat has the enhancement base, be provided with the oil blanket pad of overcoat in the lock body on the enhancement base, be provided with breather valve and drain pipe on the lock seat.
8. A motorcycle fuel tank lock according to claim 7, characterized in that: the end part of the lock tube is provided with a reinforcing rib, and a compression spring is arranged between the sliding block and the shell.
9. The utility model provides a motorcycle, install motorcycle fuel tank lock on the motorcycle which characterized in that: the motorcycle fuel tank lock is the motorcycle fuel tank lock of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011563929.7A CN112681906B (en) | 2020-12-25 | 2020-12-25 | Motorcycle oil tank lock and motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011563929.7A CN112681906B (en) | 2020-12-25 | 2020-12-25 | Motorcycle oil tank lock and motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112681906A CN112681906A (en) | 2021-04-20 |
| CN112681906B true CN112681906B (en) | 2022-02-18 |
Family
ID=75451681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011563929.7A Active CN112681906B (en) | 2020-12-25 | 2020-12-25 | Motorcycle oil tank lock and motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112681906B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250553B (en) * | 2021-05-18 | 2022-05-17 | 镇江港龙机电有限公司 | Electronic fuel tank lock |
| CN113216756A (en) * | 2021-05-25 | 2021-08-06 | 重庆隆鑫通航发动机制造有限公司 | Fuel tank lock and motorcycle |
| CN113833363A (en) * | 2021-10-21 | 2021-12-24 | 浙江鼎立实业有限公司 | Electronic fuel tank lock |
| CN114352141B (en) * | 2021-11-30 | 2023-04-21 | 东风汽车有限公司东风日产乘用车公司 | Automobile flap lock |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69129041T2 (en) * | 1990-10-24 | 1998-06-25 | Suzuki Co Ltd | Fuel tank device for motorcycle |
| CN202788329U (en) * | 2012-09-17 | 2013-03-13 | 昌辉汽车电器（黄山）股份公司 | Oil tank lock with idling function |
| CN108252584A (en) * | 2018-03-02 | 2018-07-06 | 江苏圣龙智能科技有限公司 | A kind of intelligent electric-controlled key lockset |
| CN110735566A (en) * | 2019-11-06 | 2020-01-31 | 江苏圣龙智能科技有限公司 | rotary keyless lock protector for motorcycle oil filling port |
| CN111779382A (en) * | 2020-08-07 | 2020-10-16 | 浙江鼎立实业有限公司 | Keyless intelligent oil tank lock for motorcycle |
-
2020
- 2020-12-25 CN CN202011563929.7A patent/CN112681906B/en active Active
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| Publication number | Publication date |
|---|---|
| CN112681906A (en) | 2021-04-20 |
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