CN211724667U - Track-variable clockwork spring trolley - Google Patents
Track-variable clockwork spring trolley Download PDFInfo
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- CN211724667U CN211724667U CN201922178642.1U CN201922178642U CN211724667U CN 211724667 U CN211724667 U CN 211724667U CN 201922178642 U CN201922178642 U CN 201922178642U CN 211724667 U CN211724667 U CN 211724667U
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- shaft
- transmission gear
- fixedly connected
- trolley
- power shaft
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Abstract
The utility model discloses a changeable clockwork spring dolly of orbit belongs to the toy car field. The track-variable spring trolley comprises a trolley frame, wherein a steering wheel is mounted at the front end of the trolley frame, two bases are symmetrically mounted on two sides of the rear end of the trolley frame along the height direction, and a power shaft, a crank shaft, a driving shaft and a driven shaft are sequentially connected between the two bases in a rotating mode from top to bottom; a spring roll is fixedly arranged on the power shaft; the power shaft is in transmission connection with the crank shaft through a first transmission device, and the crank shaft is in transmission connection with the driving shaft through a second transmission device; one end of the crank shaft is fixedly connected with the rocker; one end of the driving shaft is fixedly connected with the driving wheel; a driven wheel is fixedly connected to one side of the driven shaft, which is opposite to the driving wheel; the rocker is rotationally connected with the steering wheel through a connecting rod mechanism, so that the problem of single track of the existing toy car is solved.
Description
Technical Field
The utility model relates to a toy car field, concretely relates to changeable clockwork spring dolly of orbit.
Background
Along with the improvement of living standard of people, people also have higher requirements on toy cars such as clockwork spring dollies, but clockwork spring dollies appearing in the existing market basically all are simple straight line walking, if do not have under the effect of external force, can not change the direction of marcing generally, and such dolly route is single, and long-time use then lacks the interest. For solving the single problem of dolly orbit of marcing, the utility model provides a changeable clockwork spring dolly of orbit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the above-mentioned technique not enough, provide a changeable clockwork spring dolly of orbit, solve the single technical problem of toy dolly orbit among the prior art.
In order to achieve the technical purpose, the technical scheme of the utility model provides a clockwork spring dolly with variable track, which comprises a frame and is characterized in that a steering wheel is installed at the front end of the frame, two bases are symmetrically installed on two sides of the rear end of the frame along the height direction, a power shaft, a crank shaft, a driving shaft and a driven shaft are sequentially connected between the two bases in a rotating manner from top to bottom, the power shaft is in transmission connection with the crank shaft through a first transmission device, and the crank shaft is in transmission connection with the driving shaft through a second transmission device; a spring roll is fixedly arranged on the power shaft, a side plate is fixedly arranged on the base adjacent to the spring roll, one end of the spring roll is fixedly connected with the power shaft, and the other end of the spring roll is fixedly connected with the side plate; one end of the crank shaft extends out of one of the bases and is fixedly connected with the middle position of the rocker; one end of the driving shaft extends out of the other base and is fixedly connected with the driving wheel, and the rocker and the driving wheel are respectively positioned on two opposite sides; a driven wheel is fixedly connected to one side of the driven shaft, which is opposite to the driving wheel; the rocker is rotatably connected with the steering wheel through a connecting rod mechanism.
Furthermore, the first transmission device comprises a first transmission gear fixedly arranged on the power shaft and a second transmission gear fixedly arranged on the crank shaft and meshed with the first transmission gear; the second transmission device comprises a third transmission gear fixedly mounted on the crank shaft and a fourth transmission gear fixedly mounted on the driving shaft and meshed with the third transmission gear, and the diameters of the first transmission gear and the third transmission gear are respectively larger than those of the second transmission gear and the fourth transmission gear.
Furthermore, the side plate comprises a first protruding part and a second protruding part, the first protruding part is over against the spring roll on the power shaft and is fixedly connected with the first end of the spring roll, the second protruding part is a convex plate, and the convex plate and a base provided with the side plate are arranged in parallel at a certain distance.
The speed limiting device comprises a circular ring, a circular sheet and two flying balls, the circular ring is fixedly installed at the first end of the crank shaft, the circular sheet is rotatably sleeved at the second end of the crank shaft, the circular ring and the circular sheet are fixedly connected through two thin ropes, the two flying balls are respectively sleeved on the two thin ropes, and the circular ring is located between the convex plate and the base.
Furthermore, the box cover is further included, and two ends of the box cover are fixedly connected with the top ends of the two bases respectively.
Furthermore, a plurality of triangular protrusions are uniformly arranged on the power shaft at intervals along the circumferential direction, a plurality of protruding blocks matched with the triangular protrusions are arranged on the first transmission gear, each protruding block is inserted between two adjacent triangular protrusions, when the power shaft rotates in the forward direction, the protruding blocks slide on the back surfaces of the triangular protrusions, when the power shaft rotates in the reverse direction, the triangular protrusions prop against the protruding blocks, and the first transmission gear rotates along with the first transmission gear.
Furthermore, the height of the front end of the frame is higher than that of the rear end of the frame, the number of the steering wheels is one, the steering wheels are installed at the middle position of the front end of the frame, the steering wheels are installed on a steering wheel installation frame through wheel shafts, the steering wheel installation frame is located at the bottom of the front end of the frame, and the steering wheel installation frame is rotatably connected with the front end of the frame through a rotating shaft.
Further, the link mechanism includes a first link and a second link; the one end of rocker with first connecting rod passes through first universal joint and connects, first connecting rod with connect through the second universal joint between the second connecting rod, the second connecting rod with the top fixed connection of pivot, the pivot is passed perpendicularly the frame front end and with the frame rotates and is connected, the bottom of pivot with directive wheel mounting bracket fixed connection drives the directive wheel mounting bracket rotates.
Compared with the prior art, the beneficial effects of the utility model include: the utility model provides a changeable clockwork spring dolly of orbit is rolled up as power parts by the clockwork spring, turns into the elastic potential energy that the clockwork spring was rolled up kinetic energy, and crank axle, rocker and link mechanism can realize that the reciprocating swing that the directive wheel turned to rotates to realize the change of orbit, increased the interest. The magnitude of the power can be changed by adjusting and changing the degree of contraction of the winding power shaft of the clockwork spring, so that the track is adjusted. The speed limiting system consists of a circular ring, a circular sheet and two flying balls, the circular sheet is contacted with or separated from the side plate through the centrifugal force of the flying balls, and the speed stability of the trolley is ensured by using the friction force between the circular sheet and the side plate.
Drawings
Fig. 1 is a schematic structural view of a clockwork spring trolley with a variable track provided by the present invention;
FIG. 2 is a partial enlarged view of the power unit and the speed limiting device of the spring car with variable track according to the present invention;
FIG. 3 is a front view of the track changeable clockwork spring car removing case cover provided by the present invention;
FIG. 4 is a schematic view of the structure of the cage;
FIG. 5 is a schematic structural view of a barrel roll;
FIG. 6 is a schematic view showing the construction of a governor;
FIG. 7 is a schematic structural view of a power shaft;
FIG. 8 is a schematic structural view of the first drive gear;
1-a frame, 2-a base at one side, 3-a base at the other side, 4-a driven wheel, 5-a driven shaft, 6-a steering wheel, 7-a box cover, 8-a second connecting rod, 9-a first connecting rod, 10-a spring roll, 11-a power shaft, 12-a speed limiting device, 13-a crank shaft, 14-a rocker, 15-a driving shaft and 16-a driving wheel, 17-convex plate, 18-side plate, 19-first protruding part, 20-steering wheel mounting rack, 21-wheel shaft, 22-rotating shaft, 23-first transmission gear, 24-convex block, 101-rectangular hole, 102-rectangular hole, 201-circular ring, 202-flying ball, 203-circular disc, 204-string, 301-rectangular protrusion and 302-triangular protrusion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model provides a changeable clockwork spring dolly of orbit, including frame 1, the front end of frame 1 is installed and is turned to the wheel 6, two bases 2,3 are installed along the direction of height symmetry in the rear end both sides of frame 1, two rotate from top to bottom between 2,3 and be connected with power shaft 11, crank axle 13, driving shaft 15 and driven shaft 5 in proper order, power shaft 11 with through first transmission connection between the crank axle 13, through second transmission connection between crank axle 13 and the driving shaft 15; a spring roll 10 is fixedly arranged on the power shaft 11, a side plate 18 is fixedly arranged on the base 2 adjacent to the spring roll 10, one end of the spring roll 10 is fixedly connected with the power shaft 11, and the other end of the spring roll 10 is fixedly connected with the side plate 18; one end of the crank shaft 13 extends out of one of the bases 3 and is fixedly connected with the middle position of the rocker 14; one end of the driving shaft 15 extends out of the other base 2 and is fixedly connected with a driving wheel 16, and the rocker 14 and the driving wheel 16 are respectively positioned at two opposite sides; a driven wheel 4 is fixedly connected to one side of the driven shaft 5 opposite to the driving wheel 16; the rocker 14 is rotatably connected with the steering wheel 16 through a link mechanism. The track-variable spring trolley can realize track change in the advancing process, and interestingness is increased. The magnitude of the power can be adjusted by the degree of tightness of the spring roll 10, thereby adjusting the advancing trajectory.
Example 1:
in order to solve the problem of single track and lack of interest of the existing toy car, the embodiment 1 of the utility model provides a changeable clockwork spring car of track, improves on the power device and the speed limiting device of the existing car to make the track change in the walking process, and increases the interest. Fig. 1 is a schematic structural view of a clockwork spring trolley with a variable track provided by the present invention; FIG. 2 is a partial enlarged view of the power plant and speed limiting system of the track-variable clockwork spring dolly provided by the present invention; fig. 3 is a front view of the clockwork spring trolley with a variable track provided by the invention; FIG. 4 is a schematic view of the structure of the cage; FIG. 5 is a schematic structural view of a barrel roll; FIG. 6 is a schematic view showing the construction of a governor; FIG. 7 is a schematic structural view of a power shaft; fig. 8 is a schematic structural view of the first transmission gear.
As shown in fig. 1 and 2, the track-variable clockwork spring trolley comprises a frame 1, a steering wheel 6 is mounted at the front end of the frame, two bases 2 and 3 are symmetrically mounted on two sides of the rear end of the frame 1 along the height direction, a power shaft 11, a crank shaft 13, a driving shaft 15 and a driven shaft 5 are sequentially connected between the two bases 2 and 3 in a rotating mode from top to bottom, and specifically, the power shaft 11, the crank shaft 13, the driving shaft 15 and the driven shaft 4 are rotatably connected with the two bases 2 and 3 through bearings.
As shown in fig. 2, a spring roll 10 is fixedly mounted on the power shaft 11, power of the trolley is provided by the spring roll 10, a side plate 18 is fixedly mounted on the base 2 adjacent to the spring roll 10, one end of the spring roll 10 is fixedly connected with the power shaft 11, specifically, a rectangular boss 301 on the power shaft 11 is in form-fit connection with a rectangular hole 102 at the inner end of the spring roll 10, the other end of the spring roll 10 is in form-fit connection with the side plate 18 through a rectangular hole 101 at the other end of the spring roll 10 and a protruding portion 19 on the side plate 18, and the connection between the spring roll 10 and the power shaft 11 and the side plate 18 may also be not limited to the form-fit connection, and may also be in clamping connection, bolt connection or other fixed connection manners. When a user rotates the power shaft 11, the spring roll 10 can be wound on the power shaft 11 and can be contracted to a proper degree; when the trolley is released, the spring coil 10 converts the elastic potential energy into the capacity, and the power shaft 11 can rotate under the action of the spring coil 10, so that the trolley is provided with forward power. The magnitude of the power can be adjusted by adjusting the degree of contraction of the spring roll 10, so that the walking track of the trolley is adjusted.
As shown in fig. 2, the power shaft 11 is in transmission connection with the crank shaft 12 through a first gear transmission device, and the first gear transmission device includes a first transmission gear fixedly mounted on the power shaft 11 and a second transmission gear fixedly mounted on the crank shaft 13 and meshed with the first transmission gear. When the power shaft 11 rotates under the action of the spring roll 10, the first gear transmission device drives the crank shaft 13 to rotate.
As shown in fig. 7 and 8, a plurality of triangular protrusions 302 are uniformly arranged on the power shaft 11 at intervals along the circumferential direction, a tooth space on a ratchet wheel is similar between two adjacent triangular protrusions 302, a plurality of protrusions 24 matched with the triangular protrusions 302 are uniformly arranged on the first transmission gear 23 at intervals along the circumferential direction, the protrusions 24 are similar to a ratchet wheel, so that when a clockwork spring is used for storing energy, the protrusions 24 slide over the triangular protrusions 302, at the moment, the first transmission gear 23 does not move, the first transmission gear 23 is not driven to directly rotate the power shaft 11 for storing energy, when the clockwork spring 10 is released for doing work, the protrusions 24 clamp the triangular groove to enable the power shaft 11 to drive the first transmission gear 23 for transmission, and the driving wheel 16 and the four-bar linkage mechanism to move. This makes it possible to store energy in the spring roll 10 more easily and without the need for a subsequent drive. Meanwhile, after the spring roll 10 is restored to the original state, the spring can continue to advance only by rotating the spring again to store energy, so that the measuring track is uninterrupted, the whole transmission mechanism does not need to be restored again, the time is saved, and the track is easy to observe.
As shown in fig. 2, one end of the crank shaft 13 extends from one of the bases 3 and is fixedly connected to a middle position of a rocker 14, and the rocker 14 is rotatably connected to the steering wheel 6 through a link mechanism. When the crank shaft 13 rotates, the rocker 14 is driven to rotate, the rocker 14 is rotatably connected with the steering wheel 6 through the connecting rod mechanism, and the steering wheel 6 is driven to do reciprocating swinging rotation left and right through the connecting rod mechanism so as to realize reciprocating change of the rotating direction of the steering wheel 6, thereby realizing variable track and increasing interestingness.
As shown in fig. 2, the crank shaft 13 is in transmission connection with the driving shaft 15 through a second gear transmission device, and the second gear transmission device includes a third transmission gear fixedly installed on the crank shaft 13 and a fourth transmission gear fixedly installed on the driving shaft 15 and engaged with the third transmission gear. The crankshaft 13 drives the driving shaft 15 to rotate under the action of the second gear transmission device, and the driving shaft 15 rotates to drive the driving wheel 16 to rotate, so that the trolley is driven to move forwards.
One end of the driving shaft 15 extends out of the other base 2 and is fixedly connected with a driving wheel 16, the rocker 14 and the driving wheel 16 are respectively located on two opposite sides, a driven wheel 4 is fixedly connected to one side of the driven shaft 5 opposite to the driving wheel 16, and when the driving shaft 15 rotates, the driving wheel 16 is driven to rotate, so that the trolley is driven to move forwards.
In order to provide enough power and enable the trolley to travel a longer distance, the diameters of the first transmission gear and the third transmission gear are respectively larger than the diameters of the second transmission gear and the fourth transmission gear.
The first gear transmission device and the second gear transmission device can be replaced by a chain transmission mode or a belt transmission mode, the transmission gear can be replaced by a transmission chain wheel or a belt pulley, but the gear transmission is preferred.
As shown in fig. 3, the front end of the frame 1 is higher than the rear end of the frame 1, the steering wheels 6 are arranged in one and located at the middle position of the front end of the frame 1, the steering wheels 6 are mounted on a steering wheel mounting rack 20 through a wheel shaft 21, the steering wheel mounting rack 20 is located at the bottom of the front end of the frame 1, and the steering wheel mounting rack 20 is rotatably connected with the front end of the frame 1 through a rotating shaft 22. The link mechanism comprises a first link 9 and a second link 8; the one end of rocker 14 with first connecting rod 9 passes through first universal joint and connects, first connecting rod 9 with connect through the second universal joint between the second connecting rod 8, second connecting rod 8 with the top fixed connection of pivot 22, pivot 22 passes perpendicularly the front end of frame 1 and with frame 1 rotates and connects, the bottom of pivot 22 with directive wheel mounting bracket 20 fixed connection drives directive wheel mounting bracket 20 rotates. When the crank shaft 13 rotates to drive the rocker 14 to rotate, the front wheel 6 is driven to do reciprocating swinging rotation through the connecting rod mechanism, so that the advancing direction of the trolley is continuously adjusted and changed, and the track is adjustable.
Furthermore, in order to facilitate the installation, the side plate 18 comprises a first protruding portion 19 and a second protruding portion 17, the first protruding portion 19 faces the spring roll 10 on the power shaft 11 and is fixedly connected with the first end 101 of the spring roll 10, and the second protruding portion 17 is a convex plate which is arranged in parallel with the base 2 on which the side plate 18 is installed at a certain distance.
As shown in fig. 2 and 6, the utility model provides a changeable clockwork spring dolly in orbit still includes speed limiting device 12, speed limiting device 12 includes a ring 201, a disk 203 and two flyballs 202, ring 201 fixed mounting is in the last first end of crank axle 13, disk 203 rotates the cover and establishes the last second end of crank axle 13, through two strings 204 fixed connection, two between ring 201 and the disk 203 the cover is equipped with a flyball 202 respectively on the string 204, ring 201 is located the flange with between the base, ring 201 is fixed through the round pin axle on the crank handle 13.
The working principle of the speed limiting device 12 is that when the crank shaft 13 rotates, the circular ring 201 is driven to rotate, the flying ball 202 is driven to rotate around the crank shaft 13, when the rotating speed of the flying ball 202 is high enough, the flying ball 202 pulls the circular sheet 203 through the thin rope 201 under the action of centrifugal force, and as the circular ring 201 is fixed through the pin hole on the circular ring 201, the circular sheet 203 is pulled by the thin rope 204 to approach the circular ring 201, so that the circular sheet 203 is in contact with the convex plate on the side plate, the higher the speed is, the higher the contact pressure is, the friction force is generated between the circular sheet 203 and the convex plate due to the rotation of the crank shaft 13, and the crank shaft 13 is prevented from rotating too fast, so that the speed. The speed limiting device can ensure the traveling speed stability of the trolley.
As shown in fig. 1, further, the spring motor car with variable track further comprises a box cover 7, and two ends of the box cover 7 are respectively fixedly connected with the top ends of the two bases 1. The box cover 7 can be used for storing things, and interestingness is increased.
The utility model provides a changeable clockwork spring dolly of orbit's theory of operation does: when a user rotates the power shaft 11, the spring roll 10 is wound on the power shaft 11 and is contracted to a proper degree; when the trolley is released, the power shaft 11 can rotate under the action of the spiral spring, the power shaft 11 drives the crank shaft 13 to rotate under the action of the first transmission device, then the driving shaft 15 is driven to rotate by the second transmission device, the rocker 14 is driven to rotate when the crank shaft 13 rotates, the rocker 14 rotates to drive the steering wheel 6 to perform reciprocating swinging rotation through the connecting rod mechanism, so that the adjustment and the change of the rotating direction are realized, the driving shaft 15 rotates to drive the driving wheel 16 to rotate, and the driving wheel 16 serves as a driving wheel to drive the driven wheel 4 to rotate, so that the whole trolley is driven to advance. Meanwhile, the trolley can also adjust the power by adjusting the contraction degree of the spring roll 10, and adjust the walking track of the trolley by adjusting the power.
Therefore the utility model provides a changeable clockwork spring dolly of orbit can change the orbit at the in-process of walking, has increased the interest, can adjust the size of power through the degree of tightening of adjusting the clockwork spring book 10 to adjust the orbit.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A track-variable spring trolley comprises a trolley frame and is characterized in that a steering wheel is mounted at the front end of the trolley frame, two bases are symmetrically mounted on two sides of the rear end of the trolley frame along the height direction, a power shaft, a crank shaft, a driving shaft and a driven shaft are sequentially connected between the two bases in a rotating mode from top to bottom, the power shaft is in transmission connection with the crank shaft through a first transmission device, and the crank shaft is in transmission connection with the driving shaft through a second transmission device; a spring roll is fixedly arranged on the power shaft, a side plate is fixedly arranged on the base adjacent to the spring roll, one end of the spring roll is fixedly connected with the power shaft, and the other end of the spring roll is fixedly connected with the side plate; one end of the crank shaft extends out of one of the bases and is fixedly connected with the middle position of the rocker; one end of the driving shaft extends out of the other base and is fixedly connected with the driving wheel, and the rocker and the driving wheel are respectively positioned on two opposite sides; a driven wheel is fixedly connected to one side of the driven shaft, which is opposite to the driving wheel; the rocker is rotatably connected with the steering wheel through a connecting rod mechanism.
2. The trace-variable clockwork spring carriage according to claim 1, wherein the first transmission means comprises a first transmission gear fixedly mounted on the power shaft and a second transmission gear fixedly mounted on the crank shaft and meshed with the first transmission gear; the second transmission device comprises a third transmission gear fixedly mounted on the crank shaft and a fourth transmission gear fixedly mounted on the driving shaft and meshed with the third transmission gear, and the diameters of the first transmission gear and the third transmission gear are respectively larger than those of the second transmission gear and the fourth transmission gear.
3. The trajectory-variable clockwork spring carriage according to claim 1, characterized in that said side plate comprises a first projecting portion facing the spring roll on said power shaft and fixedly connected to the first end of said spring roll, and a second projecting portion, which is a cam, spaced from and arranged parallel to the base on which said side plate is mounted.
4. The track-variable clockwork spring trolley according to claim 3, further comprising a speed-limiting device, wherein the speed-limiting device comprises a ring, a disc and two flying balls, the ring is fixedly arranged at a first end of the crank shaft, the disc is rotatably sleeved at a second end of the crank shaft, the ring and the disc are fixedly connected through two thin ropes, one flying ball is sleeved on each of the two thin ropes, and the ring is located between the convex plate and the base.
5. The track-variable clockwork spring car according to any one of claims 1 to 4, further comprising a box cover, wherein two ends of the box cover are fixedly connected with the top ends of the two bases respectively.
6. The trajectory-variable clockwork spring carriage according to claim 2, wherein a plurality of triangular projections are arranged on the power shaft at regular intervals in the circumferential direction, a plurality of projections are arranged on the first transmission gear, each projection is inserted between two adjacent triangular projections, when the power shaft rotates in the forward direction, the projection slides over the back surface of the triangular projection, when the power shaft rotates in the reverse direction, the triangular projection abuts against the projection, and the first transmission gear rotates along with the triangular projection.
7. The track-variable clockwork spring trolley according to claim 1, wherein the height of the front end of the trolley frame is higher than that of the rear end of the trolley frame, the steering wheels are arranged in one and mounted at the middle position of the front end of the trolley frame, the steering wheels are mounted on a steering wheel mounting frame through wheel shafts, the steering wheel mounting frame is located at the bottom of the front end of the trolley frame, and the steering wheel mounting frame is rotatably connected with the front end of the trolley frame through a rotating shaft.
8. The variably-trailed clockwork spring carriage of claim 7 in which the linkage comprises a first link and a second link; the one end of rocker with first connecting rod passes through first universal joint and connects, first connecting rod with connect through the second universal joint between the second connecting rod, the second connecting rod with the top fixed connection of pivot, the pivot is passed perpendicularly the frame front end and with the frame rotates and is connected, the bottom of pivot with directive wheel mounting bracket fixed connection drives the directive wheel mounting bracket rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922178642.1U CN211724667U (en) | 2019-12-06 | 2019-12-06 | Track-variable clockwork spring trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922178642.1U CN211724667U (en) | 2019-12-06 | 2019-12-06 | Track-variable clockwork spring trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211724667U true CN211724667U (en) | 2020-10-23 |
Family
ID=72876445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922178642.1U Expired - Fee Related CN211724667U (en) | 2019-12-06 | 2019-12-06 | Track-variable clockwork spring trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211724667U (en) |
-
2019
- 2019-12-06 CN CN201922178642.1U patent/CN211724667U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201023 Termination date: 20211206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |