CN210278221U

CN210278221U - Magic cube and incremental profile rotation sensor and axis structure thereof

Info

Publication number: CN210278221U
Application number: CN201920720978.3U
Authority: CN
Inventors: 陈永煌; 刘寄; 张乐
Original assignee: Shantou Chenghai Kemeng Intelligent Technology Co Ltd
Current assignee: Shantou Chenghai District Moyu Culture Co ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-04-10
Anticipated expiration: 2029-05-17

Abstract

The utility model discloses a magic cube and an incremental profile rotation sensor and an axis structure thereof, which comprises a code disc, a first electric brush and a first rotor, wherein the code disc is provided with a first electrode, a second electrode and a third electrode, and each electrode is arranged on a first circumference of the code disc surface; the first brush includes three end points, each of the three end points being disposed along the first circumference with a spacing of 2 pi/3 radians between each of the two end points. The first brush is arranged on the first rotor, drives three endpoints of the first brush to rotate relative to an upper electrode of the first rotor along a first circumference through the first rotor, and contacts the first electrode, the second electrode and the third electrode through the three endpoints of the first brush; the radian occupied by the third electrode on the first circumference is 2 pi/3; in the utility model, the gap between every two electrodes, the radian occupied by the first electrode and the second electrode on the circumference are all set according to the number of pulses to be realized by the sensor; the utility model discloses magic cube face rotation detection precision has been improved greatly to it is simpler and the cost is lower to make magic cube structure.

Description

Magic cube and incremental profile rotation sensor and axis structure thereof

Technical Field

The utility model relates to a magic cube technical field, in particular to magic cube and increment profile rotation sensor and axle center structure thereof, the utility model provides a magic cube covers magic cube class intelligence toy, and all magic cube class intelligence toys that concrete finger got into WCA (international magic cube association) match contain 2 ~ 7 rank magic cube, pyramid magic cube, 5 magic balls of 12 face bodies, oblique magic cube and SQ magic cube.

Background

The magic cube, also called the Rubik cube, Taiwan as the magic cube, hong Kong as the Zuojie cube, the English name is: rubik's Cube, a magic Cube, is an intelligent toy which is popular in the whole world in the eighties, and is well liked by people as a toy for developing intelligence. The magic cube restoration refers to a process of changing the magic cube from a non-original state to an original state, is a process integrating observation, operation and imagination, and can well cultivate the operation and brain ability, the memory training, the spatial imagination and the judgment of people.

The existing magic cube commonly used is single in function, cannot communicate with external electronic equipment and lacks interestingness. In order to improve the interest of the magic cube operation, some electronic magic cubes appear in the prior art, namely, electronic elements such as a sensor and the like are arranged on the magic cube to detect the plane rotation information and the like of the magic cube, but the problems of the sensor volume, the area and the like in the prior art cannot be put into an inner ball in the center of the magic cube, so that the internal structure of the magic cube is relatively complex. For example, chinese utility model patent application publication No. CN106110651A discloses an intelligent magic cube and a timing method using the same, in which a state signal sending set for generating a state signal, i.e., a magic cube center block in which a sensor is disposed outside an inner ball on a tubular shaft, the sensor is connected with the inner ball through a wire by using a hollow tubular shaft for data and electrical connection, and the tubular shaft and the state signal sending set thereon are also rotated together during the surface rotation of the magic cube, which inevitably causes twisting of a line in the tubular shaft, and after the magic cube is used for a certain time, the twisting of the line in the tubular shaft is broken, thereby reducing the service life of the magic cube; in addition, due to the particularity of the tubular shaft structure, the magic cube axis structure disclosed in the above utility model patent application needs to be matched with corresponding magic cube modules (including a center block, corner blocks and edge blocks), and can not be compatible with the modules of the traditional magic cube.

In addition, among the prior art, the sensor that is used for carrying out angle detection among the prior art can adopt increment type encoder, but current increment encoder does not have at all that is applicable to the magic cube, and mainly the mounting dimension such as volume thickness can't reach the magic cube requirement, and the magic cube is the polyhedron, and increment encoder is used for the face and rotates the detection, uses a plurality of solitary increment encoders to be unfavorable for the installation maintenance, and the encoder that is used for the magic cube both adopts the monocyclic design and need keep certain detection precision to guarantee that the detection data can be used for the AI analysis of magic cube data.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming and not enough, provide an increment profile rotation sensor of magic cube, this face rotation sensor is applied to the magic cube on, mentions the face rotation that has improved the magic cube greatly and detects the precision to make the structure of magic cube simple more and the cost is lower.

A second object of the present invention is to provide an axis structure of a magic cube.

A third object of the present invention is to provide a magic cube.

The first purpose of the utility model is realized through the following technical scheme: an incremental profile rotation sensor of a magic cube comprises a code disc, a first electric brush and a first rotor, wherein a first electrode, a second electrode and a third electrode are arranged on the code disc, and are arranged on the same circumference of the code disc surface, and the circumference is defined as a first circumference;

the first electric brush comprises three endpoints which are respectively a first endpoint, a second endpoint and a third endpoint, the first endpoint, the second endpoint and the third endpoint of the first electric brush are all arranged along the first circumference, and every two endpoints are separated by 2 pi/3 radian;

the first brush is arranged on the first rotor, the first rotor drives three endpoints of the first brush to rotate relative to the first electrode, the second electrode and the third electrode along a first circumference, and the first brush is in contact with the first electrode, the second electrode and the third electrode through the three endpoints;

the radian of the third electrode on the first circumference is 2 pi/3;

for a 3-pulse incremental profile rotation sensor, the first and second electrodes each comprise only a pad portion; the radian occupied by the gaps between the first electrode and the third electrode and between the second electrode and the third electrode on the first circumference is pi/6, and the radian occupied by the gaps between the first electrode and the second electrode on the first circumference is pi/3; the radian occupied by the first electrode and the second electrode on the first circumference is pi/3;

for a 3n pulse increment type surface rotation sensor, n is a natural number larger than 1, the first electrode and the second electrode are divided into equal parts of a pad part and a non-pad part, the pad part and the non-pad part on the first electrode and the second electrode are both distributed adjacently along a first circumference, and radians occupied by the pad part and the non-pad part on the first circumference in the first electrode and the second electrode are both pi/3 n; on the first electrode and the second electrode, the number of the welding pad parts is 3n/3, and the number of the non-welding pad parts is (3n/3) -1; the radian occupied by the gaps between the first electrode and the third electrode and between the second electrode and the third electrode on the first circumference is pi/6 n; the radian occupied by the gap between the first electrode and the second electrode on the first circumference is pi/3 n.

Preferably, the device further comprises a second brush and a second rotor; the coded disc is provided with a fourth electrode, a fifth electrode and a sixth electrode, the fourth electrode, the fifth electrode and the sixth electrode are arranged on the same circumference of the coded disc surface, and the circumference is defined as a second circumference; the second circumference is positioned at the periphery of the first circumference;

the second electric brush comprises three endpoints which are a first endpoint, a second endpoint and a third endpoint respectively, the first endpoint, the second endpoint and the third endpoint of the second electric brush are all arranged along the second circumference, and every two endpoints are separated by 2 pi/3 radian;

the second brush is arranged on the second rotor, the second rotor drives three endpoints of the second brush to rotate relative to the fourth electrode, the fifth electrode and the sixth electrode along a second circumference, and the second brush is in contact with the fourth electrode, the fifth electrode and the sixth electrode through the three endpoints;

the radian of the sixth electrode on the second circumference is 2 pi/3;

for an incremental profile rotation sensor with a pulse count of 3, the fourth electrode and the fifth electrode each comprise only a pad portion; the radian occupied by the gaps between the fourth electrode and the sixth electrode and between the fifth electrode and the sixth electrode on the second circumference is pi/6, and the radian occupied by the gaps between the fourth electrode and the fifth electrode on the second circumference is pi/3; the radian occupied by the fourth electrode and the fifth electrode on the second circumference is pi/3;

aiming at an incremental profile rotation sensor with the pulse number of 3n, wherein n is a natural number greater than 1, the fourth electrode and the fifth electrode are divided into equal parts of a pad part and a non-pad part, the pad part and the non-pad part on the fourth electrode and the fifth electrode are both distributed adjacently along a second circumference, and radians occupied by the pad part and the non-pad part on the fourth electrode and the fifth electrode on the second circumference are both pi/3 n; on the fourth electrode and the fifth electrode, the number of the welding pad parts is 3n/3, and the number of the non-welding pad parts is (3n/3) -1; the radian occupied by the gaps between the fourth electrode and the sixth electrode and between the fifth electrode and the sixth electrode on the second circumference is pi/6 n; and the radian of the gap between the fourth electrode and the fifth electrode on the second circumference is pi/3 n.

Preferably, the electric motor further comprises a second brush, a second rotor, a third brush and a third rotor; the code disc is provided with a fourth electrode, a fifth electrode, a sixth electrode, a seventh electrode, an eighth electrode and a ninth electrode, the fourth electrode, the fifth electrode and the sixth electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a second circumference; the seventh electrode, the eighth electrode and the ninth electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a third circumference; the second circumference is positioned at the periphery of the first circumference, and the third circumference is positioned at the periphery of the second circumference;

the second electric brush comprises three endpoints which are a first endpoint, a second endpoint and a third endpoint respectively, the first endpoint, the second endpoint and the third endpoint of the second electric brush are all arranged along the second circumference, and every two endpoints are separated by 2 pi/3 radian; the second brush is arranged on the second rotor, the second rotor drives three endpoints of the second brush to rotate relative to the fourth electrode, the fifth electrode and the sixth electrode along a second circumference, and the second brush is in contact with the fourth electrode, the fifth electrode and the sixth electrode through the three endpoints;

the radian of the sixth electrode on the second circumference is 2 pi/3;

aiming at an incremental profile rotation sensor with the pulse number of 3n, wherein n is a natural number greater than 1, the fourth electrode and the fifth electrode are divided into equal parts of a pad part and a non-pad part, the pad part and the non-pad part on the fourth electrode and the fifth electrode are both distributed adjacently along a second circumference, and radians occupied by the pad part and the non-pad part on the fourth electrode and the fifth electrode on the second circumference are both pi/3 n; on the fourth electrode and the fifth electrode, the number of the welding pad parts is 3n/3, and the number of the non-welding pad parts is (3n/3) -1; the radian occupied by the gaps between the fourth electrode and the sixth electrode and between the fifth electrode and the sixth electrode on the second circumference is pi/6 n; the radian of the gap between the fourth electrode and the fifth electrode on the second circumference is pi/3 n;

the third electric brush comprises three endpoints which are a first endpoint, a second endpoint and a third endpoint respectively, the first endpoint, the second endpoint and the third endpoint of the third electric brush are all arranged along a third circle, and every two endpoints are separated by 2 pi/3 radian; the third brush is arranged on the second rotor, the second rotor drives three endpoints of the third brush to rotate relative to the seventh electrode, the eighth electrode and the ninth electrode along the third circumference, and the third brush is in contact with the seventh electrode, the eighth electrode and the ninth electrode through the three endpoints;

the radian of the ninth electrode on the third circumference is 2 pi/3;

for an incremental profile rotation sensor with a pulse count of 3, the seventh electrode and the eighth electrode each comprise only a pad portion; the radian of the gap between the seventh electrode and the ninth electrode and the radian of the gap between the eighth electrode and the ninth electrode on the third circumference are both pi/6, and the radian of the gap between the seventh electrode and the eighth electrode on the third circumference are both pi/3; the radian occupied by the seventh electrode and the eighth electrode on the third circumference is pi/3;

aiming at the incremental profile rotation sensor with the pulse number of 3n, wherein n is a natural number greater than 1, the seventh electrode and the eighth electrode are divided into equal parts of a pad part and a non-pad part, the pad part and the non-pad part on the seventh electrode and the eighth electrode are adjacently distributed along a third circumference, and radians occupied by the pad part and the non-pad part on the seventh electrode and the eighth electrode on the third circumference are pi/3 n; on the seventh electrode and the eighth electrode, the number of the welding pad parts is 3n/3, and the number of the non-welding pad parts is (3n/3) -1; the radian occupied by the gaps between the seventh electrode and the ninth electrode and between the eighth electrode and the ninth electrode on the third circumference is pi/6 n; and the radian of the gap between the seventh electrode and the eighth electrode on the third circumference is pi/3 n.

The second purpose of the utility model is realized by the following technical scheme: an axis structure of a magic cube comprises an inner core with a hollow inner part, a plurality of central axes and a surface rotation sensor for detecting the rotation of a rotating layer of the magic cube, wherein the surface rotation sensor is the surface rotation sensor for the first purpose of the utility model;

the surface of the inner core is provided with through holes with the same number as the central shaft, and the through holes are uniformly distributed on the surface of the inner core at intervals;

one end of each central shaft is provided with a stop block; each central shaft is provided with a surface rotation sensor, and when the central shaft rotates, a first rotor of the surface rotation sensor arranged on the central shaft rotates along with the central shaft;

one end of each central shaft without a stop block penetrates through each through hole on the surface of the inner core, and the surface rotation sensor is limited in the inner core and is positioned between the inner surface of the inner core and the central shaft stop block;

a power supply and a microcontroller are arranged in the inner core, a first electrode, a first electric brush, a third electrode and the power supply in the surface rotation sensor form an electrifying loop, and a second electrode, the first electric brush, the third electrode and the power supply form an electrifying loop; the first electrode and the second electrode are respectively connected with two IO ports of the microcontroller.

Preferably, the axis structure of the magic cube further comprises first sleeves, the number of which is the same as that of the central shafts; the code disc and the first rotor of each surface rotation sensor are respectively arranged on each central shaft; after the code disc and the first rotor of each surface rotation sensor are arranged on each central shaft, each first sleeve is sleeved on each central shaft; a second rotor in the surface rotation sensor is arranged on a first sleeve and rotates along with the first sleeve; the central shafts sleeved with the first sleeves and the first sleeves on the central shafts penetrate through the through holes on the surface of the inner core together; the first sleeves rotate along the inner layer rotating surfaces in the magic cube correspondingly and respectively; a fourth electrode, a second electric brush, a sixth electrode and a power supply on a code disc in the surface rotation sensor form an electrifying loop, and a fifth electrode, the second electric brush, the sixth electrode and the power supply form an electrifying loop; the fourth electrode and the fifth electrode are respectively connected with two IO ports of the microcontroller;

or the axis structure of the magic cube further comprises a first sleeve and a second sleeve, wherein the number of the first sleeve and the second sleeve is the same as that of the central shaft; the code disc and the first rotor of each surface rotation sensor are respectively arranged on each central shaft; after the code disc and the first rotor of each surface rotation sensor are installed on each central shaft, and after the code disc and the first rotor of each surface rotation sensor are installed on each central shaft, each first sleeve is sleeved on each central shaft, and each second sleeve is sleeved on each first sleeve; a third rotor in the surface rotation sensor is arranged on the first sleeve and rotates along with the first sleeve; a third rotor in the surface rotation sensor is arranged on a second sleeve and rotates along with the second sleeve; the central shafts sleeved with the first sleeve and the second sleeve and the first sleeve and the second sleeve on the central shafts penetrate through the through holes on the surface of the inner core together; the central shafts respectively rotate along with the outer rotating surfaces, corresponding to and connected with the outer rotating surfaces, in the magic cube, and the first sleeves and the second sleeves respectively rotate along with the inner rotating surfaces, corresponding to and connected with the inner rotating surfaces, in the magic cube; the inner layer of the magic cube connected with the second sleeve is closer to the center of the magic cube than the inner layer of the magic cube connected with the first sleeve; a fourth electrode, a second electric brush, a sixth electrode and a power supply on a code disc in the surface rotation sensor form an electrifying loop, and a fifth electrode, the second electric brush, the sixth electrode and the power supply form an electrifying loop; the fourth electrode and the fifth electrode are respectively connected with two IO ports of the microcontroller; a seventh electrode, a third electric brush, a ninth electrode and a power supply on a code disc in the surface rotation sensor form an electrifying loop, and an eighth electrode, the third electric brush, the ninth electrode and the power supply form an electrifying loop; the seventh electrode and the eighth electrode are respectively connected with two IO ports of the microcontroller.

Furthermore, the first rotor, the second rotor, the third rotor and the code disc of the surface rotation sensor are all provided with through holes; the surface rotation sensor is mounted on the central shaft in the following way: a coded disc of the surface rotation sensor and the first rotor sequentially penetrate through the central shaft and are arranged at the end of the central shaft where the stop block is located; the inner wall of a first rotor through hole of the surface rotation sensor is attached to the outer wall of the central shaft and rotates along with the central shaft; a second rotor of the surface rotation sensor is arranged at the bottom end of the first sleeve through a through hole; the inner wall of a through hole of a second rotor of the surface rotation sensor is attached to the outer wall of the first sleeve and rotates along with the first sleeve; a third rotor of the surface rotation sensor is arranged at the bottom end of the second sleeve through a through hole; the inner wall of a third rotor through hole of the surface rotation sensor is attached to the outer wall of the second sleeve and rotates along with the second sleeve.

Furthermore, the rotation sensors on all sides are connected through a flexible circuit board, and the microcontroller is arranged on the flexible circuit board; a first electrode, a second electrode, a fourth electrode, a fifth electrode, a seventh electrode and an eighth electrode on the code disc of each side rotation sensor are respectively and correspondingly connected to each IO port of the microcontroller through a circuit on the flexible circuit board; the third electrode, the sixth electrode and the ninth electrode on the coded disc of each surface rotation sensor are connected to the circuit of the power-on loop and then connected to the power-on loop on the flexible circuit board;

when the number of the surface rotation sensors is 6, after the 6 surface rotation sensors are connected through the flexible circuit board, when each surface rotation sensor is unfolded through the flexible circuit board, 5 surface rotation sensors are connected through the flexible circuit board to form a cross structure, and in addition, 1 surface rotation sensor is connected with 1 surface rotation sensor in the 5 surface rotation sensors through the flexible circuit board.

Furthermore, the device also comprises a spring gasket, a first cover plate, a second cover plate and a third cover plate;

after the surface rotation sensor is arranged on the central shaft, the coded disc is close to the central shaft stop block, and a spring gasket is arranged between the coded disc of the surface rotation sensor and the central shaft stop block;

the first cover plate is provided with a through hole, after a code disc of the surface rotation sensor and the first rotor are arranged on the central shaft, the through hole of the first cover plate penetrates through the central shaft, the edge of the bottom of the first cover plate is fixed on the code disc, and the first rotor is covered by the first cover plate;

the second cover plate is provided with a through hole, the second cover plate through hole penetrates through the first sleeve after the second rotor is installed on the first sleeve, the bottom edge of the second cover plate is fixed on the code disc, and the second rotor is covered by the second cover plate;

and a through hole is formed in the third cover plate, the third cover plate through hole penetrates through the second sleeve after the third rotor is installed on the second sleeve, the edge of the bottom of the third cover plate is fixed on the code disc, and the third rotor is covered by the third cover plate.

Preferably, the central shaft is a screw, and the stop block at one end of the central shaft is a screw cap of the screw.

The third purpose of the utility model is realized by the following technical scheme: the utility model provides a magic cube, including a plurality of center blocks with the utility model discloses the second purpose the axle center structure of magic cube, the correspondence is provided with the center block of a magic cube on every center pin.

The utility model discloses for prior art have following advantage and effect:

(1) the utility model relates to an increment profile rotation sensor of magic cube, including code wheel, first brush and first rotor, be provided with first electrode, second electrode and third electrode on the code wheel, first electrode, second electrode and third electrode arrange on the first circumference of code wheel face; the first brush includes three end points, each of the three end points being disposed along the first circumference and each of the two end points being spaced apart by 2 pi/3 radians. The first brush is arranged on the first rotor, and drives three endpoints of the first brush to rotate relative to the first electrode, the second electrode and the third electrode along a first circumference through the first rotor; the radian occupied by the third electrode on the first circumference is 2 pi/3; in the utility model, the radian occupied by the gap between every two electrodes on the circumference and the radians occupied by the first electrode and the second electrode on the circumference are set according to the number of pulses to be realized by the sensor; the utility model discloses the increment profile rotation sensor of magic cube requires to set up corresponding parameters such as electrode according to the pulse number, has the advantage that the angle detection precision is high, is applied to this face rotation sensor to the magic cube on, mentions the face rotation that has improved the magic cube greatly and detects the precision, and because the utility model discloses the electricity is single ring design on the code wheel among the face rotation sensor, does not need the not circumference ring of multilayer different face promptly, consequently can install and use in easy to assemble and the magic cube for the structure of magic cube is simpler and the cost is lower.

(2) The utility model relates to an increment profile of magic cube rotates in the sensor, still includes second rotor and second brush, still is provided with fourth electrode, fifth electrode and sixth electrode on the code wheel, and fourth electrode, fifth electrode and sixth electrode are arranged on the second circumference of code wheel face, and this circumference is in the periphery of first circumference; the second brush is arranged on the second rotor and is driven by the second rotor to rotate relative to the fourth electrode, the fifth electrode and the sixth electrode along the second circumference; the utility model discloses in, the rotation that can realize one of them face of magic cube through the rotation of first rotor drive first brush detects, and the rotation that can realize another face of magic cube through the rotation that the second rotor drives first brush detects, consequently the utility model discloses go up the structure and make each face rotation sensor can realize simultaneously that the rotation of two faces of magic cube detects, not only including outer rotation still including inlayer pivoted magic cube to 4 ranks, 5 ranks, pyramid etc. for example, the utility model discloses profile rotation sensor can realize realizing simultaneously that magic cube inlayer and outer face rotate and detect.

(3) In the surface rotation sensor of the magic cube of the utility model, the surface rotation sensor can also comprise a second rotor, a second brush, a third rotor and a third brush, a fourth electrode, a fifth electrode, a sixth electrode, a seventh electrode, an eighth electrode and a ninth electrode are arranged on the code disc, and the fourth electrode, the fifth electrode and the sixth electrode are arranged on the second circumference of the code disc surface; the seventh electrode, the eighth electrode and the ninth electrode are arranged on a third circumference of the code wheel face; the second circumference is positioned at the periphery of the first circumference, and the third circumference is positioned at the periphery of the second circumference; the second brush is driven by the second rotor to rotate relative to the fourth electrode, the fifth electrode and the sixth electrode along the second circumference; the third brush is driven by the third rotor to rotate relative to the seventh electrode, the eighth electrode and the ninth electrode along the third circumference; the utility model discloses above-mentioned structure makes each face rotation sensor can realize the rotation detection of three faces of magic cube simultaneously, not only includes outer rotation still including two inlayer pivoted magic cubes to 6 ranks, 7 ranks etc. for example.

(4) The axis structure of the magic cube comprises an inner core with a hollow inner part, a plurality of central axes and a surface rotation sensor for detecting the rotation of the rotating layer of the magic cube, wherein the surface rotation sensor is designed by the first purpose of the utility model; the surface of the inner core is provided with a through hole, each central shaft is respectively provided with a surface rotation sensor, and when the central shaft rotates, a first rotor of the surface rotation sensor arranged on the central shaft rotates along with the central shaft; each central shaft penetrates through each through hole on the surface of the inner core, and the surface rotation sensor is limited in the inner core and is positioned between the inner surface of the inner core and the central shaft stop block; a power supply and a microcontroller are arranged in the inner core, a first electrode, a first electric brush, a third electrode and the power supply in the surface rotation sensor form an electrifying loop, and a second electrode, the first electric brush, the third electrode and the power supply form an electrifying loop; the first electrode and the second electrode are respectively connected with two IO ports of the microcontroller. The utility model discloses in, to rotating layer pivoted face rotation sensor in detecting magic cube, install it on corresponding the center pin, then the center pin passes the through-hole on core surface, rotate the sensor restriction inside the core with the face, first rotor can follow the center pin and rotate among the face rotation sensor, because the tip that the center pin of magic cube did not take the dog is the fixed module (like the center block) of installation magic cube, when so fixed module place layer of magic cube rotates, it is rotating also to correspond the center pin, first rotor follows the center pin and rotates this moment, the level signal of feeding back to microcontroller through first electrode and second electrode can judge magic cube fixed module place layer pivoted angle. The axis structure of the magic cube of the utility model enables the surface rotation sensor for detecting the rotation of the surface of the magic cube to be arranged inside the inner core through the central shaft, all the wire connection relations are arranged inside the inner core, and the rotation of the central shaft can not drive the rotation of the circuit in the inner core, thereby avoiding the phenomenon that the circuit is twisted and broken due to the rotation of the central shaft in the prior art and prolonging the service life of the electronic magic cube; additionally the utility model discloses in, the center pin of traditional magic cube is the same completely among the part that each center pin in the axle center structure stretches out from kernel surface through-hole and the prior art, has only replaced the center rest of traditional magic cube with the kernel, and all other accessories of traditional magic cube that satisfy the kernel size except the kernel can all be installed on the kernel and become the electron magic cube, consequently the utility model discloses the axle center structure has compatible strong advantage, and traditional magic cube accessory is dismantled the back and is assembled the utility model discloses structural electron magic cube that can obtain in the axle center.

(5) In the axis structure of the magic cube, when the magic cube is a 2-step magic ball, a 3-step magic ball or a 12-surface magic ball, the detection of the rotation angle of each outer layer of the magic cube can be realized by installing a surface rotation sensor with a code disc and a first rotor on a central shaft which follows the rotation of each outer layer of the magic cube; when the magic cube is a 4-5-order magic cube, namely when the rotating surface of the magic cube is not only an outer layer but also an inner layer, each used surface rotation sensor is also provided with a second rotor and a third rotor, a fourth electrode, a fifth electrode and a sixth electrode are also arranged on a code disc, meanwhile, a sleeve is arranged on an axis structure and sleeved on a central shaft, the outer layer of the magic cube connected with the central shaft is connected with the sleeve at the same side of the inner core, and the sleeve can be driven to rotate when the magic cube rotates; the method comprises the steps that a second rotor of a sensor is installed on a sleeve in a rotating mode, the second rotor rotates along with the sleeve, rotation detection of an inner layer and an outer layer on the same side of a magic cube can be achieved simultaneously through the rotation sensors on all the surfaces, when the magic cube is a 6-7-order or pyramid magic cube, the used rotation sensors on all the surfaces are provided with the second rotor and the third rotor, a code disc is further provided with a fourth electrode, a fifth electrode, a sixth electrode, a seventh electrode, an eighth electrode and a ninth electrode, meanwhile, a first sleeve is sleeved on a central shaft, then a second sleeve is sleeved on the first sleeve, the sleeve is sleeved on the central shaft, the outer layer connected with the central shaft in the magic cube is connected with the inner layer connecting sleeves on the same side of an inner core, and when the magic cube rotates, the corresponding sleeves can be driven to rotate; correspond installation face rotation sensor's second rotor and third rotor on first sleeve and second sleeve respectively, second rotor and third rotor can correspond respectively and follow first sleeve and second sleeve and rotate, consequently the utility model discloses a each rotation sensor can realize simultaneously that the magic cube detects with two inlayers and outer rotation of one side. Therefore, the axle center structure of the utility model can be suitable for various magic cube type intelligent toys entering WCA (International magic cube Association) competition.

(6) In the axis structure of the magic cube, the rotation sensors on each side are connected through the flexible circuit board, the microcontroller is arranged on the flexible circuit board, and the rotation sensors on each side are connected through the flexible circuit board; a first electrode, a second electrode, a fourth electrode, a fifth electrode, a seventh electrode and an eighth electrode on the code disc of each side rotation sensor are respectively and correspondingly connected to an IO port of the microcontroller through circuits on the flexible circuit board; the third electrode, the sixth electrode and the ninth electrode on the coded disc of each surface rotation sensor are connected to the circuit of the power-on loop and then connected to the power-on loop on the flexible circuit board; the surface rotation sensors greatly simplify the electrical connection relation in the core of the axis structure of the magic cube through the connection mode of the flexible circuit board, and meanwhile, the surface rotation sensors to be used in the magic cube are modularized through the mode, so that the surface rotation sensors are more convenient to install and maintain.

Drawings

Fig. 1 is a structural sectional view of a surface rotation sensor of a magic cube according to embodiment 1 of the present invention.

Fig. 2a to 2h are schematic diagrams illustrating the arrangement of the positions of the electrodes and the brushes in the surface rotation sensor of the magic cube in embodiment 1 of the present invention.

Fig. 3a to 3c are perspective views of the axis structure of the magic cube in embodiment 1 of the present invention.

Fig. 3d to 3f are schematic structural diagrams of a third-order magic cube in embodiment 1 of the present invention.

Fig. 4 is a schematic diagram of the embodiment 1 of the present invention after the respective rotation sensors are deployed.

Fig. 5 is a schematic structural view of a surface rotation sensor of the magic cube in embodiment 2 of the present invention.

Fig. 6 is a schematic diagram of the arrangement of the electrode positions in the surface rotation sensor of the magic cube in embodiment 2 of the present invention.

Fig. 7 is a schematic view of an axial structure of a magic cube in embodiment 2 of the present invention.

Fig. 8 is a schematic diagram of the embodiment 2 of the present invention after the respective rotation sensors are deployed.

Fig. 9 is a schematic structural view of a surface rotation sensor of a magic cube according to embodiment 3 of the present invention.

Fig. 10 is a schematic diagram of the arrangement of electrodes in the surface rotation sensor of the magic cube in embodiment 3 of the present invention.

Fig. 11 is a schematic view of an axial structure of a magic cube in embodiment 3 of the present invention.

Fig. 12 is a schematic view of the rotation sensors of the respective surfaces after being unfolded according to embodiment 3 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Example 1

The embodiment discloses an incremental profile rotation sensor of a magic cube, which comprises a code disc 1, a first electric brush 2 and a first rotor 3, wherein the code disc is provided with a first electrode, a second electrode and a third electrode, the first electrode, the second electrode and the third electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a first circumference; the first electric brush comprises three endpoints which are a first endpoint, a second endpoint and a third endpoint respectively, the first endpoint, the second endpoint and the third endpoint of the first electric brush are all arranged along the first circumference, and every two endpoints are separated by 2 pi/3 radian; the first brush is arranged on the first rotor, three endpoints of the first brush are driven by the first rotor to rotate relative to the first electrode, the second electrode and the third electrode along the first circumference, and the first brush is in contact with the first electrode, the second electrode and the third electrode through the three endpoints.

The radian occupied by the third electrode on the first circumference is 2 pi/3;

The 3-pulse incremental profile rotation sensor means that 3 pulses can be generated when the rotor of the incremental profile rotation sensor rotates for one circle; wherein each pulse represents a 120 degree rotation of the rotor. The 3n pulse incremental profile rotation sensor means that 3n pulses can be generated when the incremental profile rotation sensor rotor rotates for one circle; wherein each pulse represents a 120/n degree rotation of the rotor.

In this embodiment, when the incremental profile rotation sensor is a 6-pulse incremental profile rotation sensor, i.e., n is 2, the positional arrangement of the brushes and the electrodes in the incremental profile rotation sensor is as shown in fig. 2. In the first electrode 101 and the second electrode 102, the number of the pad portions is 2, the number of the non-pad portions is 1, and the radian occupied by each of the pad portions and the non-pad portions on the first circumference is pi/6, i.e., 30 degrees, so that the radians occupied by the first electrode and the second electrode on the first circumference are pi/2, i.e., 90 degrees. The radian occupied by the gaps between the first electrode and the third electrode and between the second electrode and the third electrode on the first circumference is pi/12, namely 15 degrees. The radian occupied by the gap between the first electrode and the second electrode on the first circumference is pi/6, namely 30 degrees. The third electrode 103 occupies an arc of 2 pi/3, i.e. 120 degrees, over the first circumference.

In the present embodiment, if the face of the code wheel on which the first electrode, the second electrode, and the third electrode are arranged is taken as the upper face of the code wheel, the first brush is located above the first circumference on which the first electrode, the second electrode, and the third electrode are located with respect to the code wheel. In this embodiment, when each end point of the brush moves to a position corresponding to a first circumferential portion where a pad portion of the first electrode or the second electrode is located, the first brush is in contact with the pad member, that is, the first brush is electrically connected to the first electrode or the second electrode, and when each end point of the first brush moves to a position corresponding to a first circumferential portion where a non-pad portion of the first electrode or the second electrode is located, the first brush is in contact with the pad member, that is, the first brush is not electrically connected to the first electrode or the second electrode; in this embodiment, three endpoints of the first brush are spaced by 120 degrees, and the radian of the third electrode occupying the first circumference is 120 degrees, so that one endpoint of the first brush always contacts with the third electrode in the rotation process of the first brush.

The embodiment also discloses an axis structure of the magic cube, which is used for the magic cube only comprising an outer layer rotating surface; as shown in fig. 3a to 3c, the surface rotation sensor comprises a hollow inner core 21, a plurality of central shafts 22, and a surface rotation sensor 23 for detecting the rotation of the magic cube rotating layer, wherein the surface rotation sensor is the surface rotation sensor described above in this embodiment.

Through holes with the same number as the central shaft are arranged on the surface of the inner core, and the through holes are uniformly distributed on the surface of the inner core at intervals;

one end of each central shaft is provided with a stop block 25; each central shaft is provided with a surface rotation sensor, and when the central shaft rotates, a first rotor of the surface rotation sensor arranged on the central shaft rotates along with the central shaft; in the embodiment, through holes are arranged on a code disc and a rotor of the surface rotation sensor, and the code disc and the first rotor sequentially penetrate through a central shaft and are arranged at the end of a stop block of the central shaft; the inner wall of a first rotor through hole of the surface rotation sensor is attached to the outer wall of the central shaft and rotates along with the central shaft, and the diameter of the coded disc through hole is larger than that of the central shaft and does not rotate along with the central shaft. In this embodiment, after the code wheel of the surface rotation sensor and the first rotor are mounted on the center shaft, the code wheel is close to the center shaft stopper, and a spring washer is provided between the code wheel of the surface rotation sensor and the center shaft stopper.

The non-stop end of each central shaft extends through the through holes in the surface of the core to define the surface rotation sensor within the core and between the inner surface of the core and the central shaft stop. Fig. 3a shows the axial structure of the magic cube of this embodiment when the core shell is omitted, which is a structure convenient for observing the inside of the core, the axial structure of the actual magic cube is a structure in which the central axes pass through the through holes on the surface of the core and the surface rotation sensor is located inside the core as shown in fig. 3b, and fig. 3c is a cross-sectional view of the axial structure of the magic cube of this embodiment.

A power supply 24 and a microcontroller are arranged in the inner core, a first electrode 101, a first brush 2, a third electrode 103 and the power supply in the surface rotation sensor form an electrifying loop, and a second electrode 102, the first brush 2, the third electrode 1003 and the power supply form an electrifying loop; the first electrode 101 and the second electrode 102 are respectively connected to two IO ports of the microcontroller.

In the embodiment, the third electrode is grounded, namely, connected with the negative end of the power supply; if the IO ports of the microcontroller, which are connected with the first electrode and the second electrode, are provided with pull-up resistors, the first electrode and the second electrode are connected with the positive end of the power supply through the pull-up resistors of the IO ports, and the first electrode and the second electrode are not connected with the resistors and the power supply additionally; if the IO ports of the microcontroller, which are connected with the first electrode and the second electrode, are not provided with pull-up resistors, the first electrode and the second electrode are connected with the positive end of the power supply through resistors; the first electrode and the second electrode are communicated with the third electrode through a first electric brush; for a first electrode and a second electrode, when a first electric brush is in contact with one electrode, a power-on loop where the electrode is located is electrified, a low-level signal (0) is arranged on the electrode, and one end of a microcontroller connected with the electrode receives the low-level signal; when the first electric brush is not in contact with the electrode, the electrode is in a suspended state, and one end of the microcontroller connected with the electrode receives a high-level signal (1). Therefore, in the embodiment, the microcontroller can determine the contact condition of each electrode in the first brush and the first electrode according to the level signals received by the two IO ports; the rotation of first brush will change the contact condition of each electrode in the first electrode, therefore microcontroller can confirm the turned angle of first brush according to the level signal change condition that each IO port received in this embodiment to the turned angle in the magic aspect that further confirms drive center pin pivoted. In this embodiment, of course, the electrical connection modes of the first electrode 101, the first brush 2, and the third electrode 103, and the second electrode 102, the first brush 2, and the third electrode 103 may be other, as long as the microcontroller can receive two different level signals corresponding to the IO port in two cases of the first brush, the first electrode, and the second electrode being in contact with each other and not in contact with each other.

If the first electrode, the second electrode and the third electrode on the code wheel are arranged as shown in fig. 2a to 2h, that is, the surface rotation sensor is a 6-pulse incremental profile rotation sensor, starting from the situation shown in fig. 2a, when the IO port connected with the first electrode 101 and the second electrode 102 of the microcontroller receives 11, 01, 00 and 10 every time, a pulse signal is generated, it is determined that the first rotor drives the first brush to rotate clockwise by 60 degrees, and when the microcontroller receives 11, 01, 00 and 10 every 6 times, 6 pulse signals are generated, and it is determined that the first rotor drives the first brush to rotate clockwise by 360 degrees. Wherein each change in the two-digit binary number indicates a 15 degree rotation of the first brush, as shown in fig. 2 b-2 h for 7 figures, starting from fig. 2a, the position of the brush after each 15 degree rotation.

In the embodiment, the rotation sensors on all sides are connected through the flexible circuit board, and the microcontroller is arranged on the flexible circuit board; a first electrode and a second electrode on a code disc of each surface rotation sensor are respectively and correspondingly connected to each IO port of the microcontroller through a circuit on the flexible circuit board; and the third electrode on the code disc of each surface rotation sensor is connected into a power-on loop through a circuit on the flexible circuit board.

As shown in fig. 4, when the number of the surface rotation sensors is 6, after the 6 surface rotation sensors are connected by the flexible circuit board, and each surface rotation sensor is unfolded by the flexible circuit board, 5 of the surface rotation sensors are connected by the flexible circuit board to form a cross structure, and the other 1 surface rotation sensor is connected to 1 surface rotation sensor among the 5 surface rotation sensors by the flexible circuit board.

In this embodiment, as shown in fig. 3a to 3c, the central shaft may be a screw, and the stopper at one end of the central shaft is a nut of the screw.

In this embodiment, as shown in fig. 1, each face rotation sensor is further provided with a first cover plate 31, the first cover plate 31 is provided with a through hole, after the code wheel 1 and the first rotor 3 of the face rotation sensor are mounted on the central shaft, the first cover plate through hole passes through the central shaft, the bottom edge of the first cover plate is fixed on the code wheel, and the first rotor is covered by the first cover plate. Above-mentioned first cover plate makes face rotation sensor's structure compacter, also separates first rotor and first brush and other parts on the axle center structure of magic cube simultaneously, avoids receiving the influence of other parts.

In the present embodiment, the first rotor in the area drive sensor is an insulating member, so that the first brush is insulated from the other members except for the first electrode and the second electrode on the code wheel.

The axis structure of the magic cube in the embodiment is suitable for being applied to 2-order, 3-order or 12-body 5-magic-ball magic cubes, when the axis structure is applied to 2-order and 3-order magic cubes, the number of the central shafts in the axis structure of the magic cube in the embodiment is 6, the number of the surface rotation sensors is 6, and the code disc and the first rotor of each surface rotation sensor are respectively installed on each central shaft. When the magic cube is applied to a magic cube with a 12-face body 5, the number of the central shafts in the axis structure of the magic cube in the embodiment is 12, the number of the face rotation sensors is 12, and the code disc and the first rotor of each face rotation sensor are respectively installed on each central shaft.

This embodiment also discloses a magic cube, as shown in fig. 3d to 3f, which includes a plurality of center blocks and the above-mentioned axis structure of the magic cube of this embodiment, and each center axis 22 is correspondingly provided with a center block 27 of the magic cube. Fig. 3d shows a schematic view of the assembled magic cube with the center block 27, fig. 3e shows a schematic view of the assembled magic cube shown in fig. 3d after the corner blocks and the prism blocks are mounted, and fig. 3f shows a final magic cube finally assembled in fig. 3 e.

Example 2

The present embodiment discloses a surface rotation sensor of a magic cube, which is different from the surface rotation sensor of the magic cube in embodiment 1 only in that, as shown in fig. 5, the surface rotation sensor of the magic cube of the present embodiment further includes a second rotor 4 and a second brush 5, a code disc is provided with a fourth electrode, a fifth electrode and a sixth electrode, the fourth electrode, the fifth electrode and the sixth electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a second circumference; the second circumference is at the periphery of the first circumference.

In this embodiment, the second brush includes three endpoints, a first endpoint, a second endpoint, and a third endpoint, the first endpoint, the second endpoint, and the third endpoint of the second brush are all arranged along the second circumference and each two endpoints are separated by 2 π/3 radians.

The second brush is arranged on the second rotor, three endpoints of the second brush are driven by the second rotor to rotate relative to the fourth electrode, the fifth electrode and the sixth electrode along the second circumference, and the second brush is in contact with the fourth electrode, the fifth electrode and the sixth electrode through the three endpoints.

The sixth electrode occupies a radian of 2 pi/3 on the second circumference.

In the present embodiment, when the incremental profile rotation sensor is a 6-pulse incremental profile rotation sensor, i.e., n is 2, the positional arrangement of the second brush 5 and the respective electrodes in the incremental profile rotation sensor is as shown in fig. 6. In the fourth electrode 201 and the fifth electrode 202, the number of the pad portions is 2, the number of the non-pad portions is 1, and the radian occupied by each of the pad portions and the non-pad portions on the second circumference is pi/6, i.e., 30 degrees, so that the radians occupied by the fourth electrode and the fifth electrode on the second circumference are pi/2, i.e., 90 degrees. And the radian occupied by the gaps between the fourth electrode and the sixth electrode and between the fifth electrode and the sixth electrode on the second circumference is pi/12, namely 15 degrees. The radian occupied by the gap between the fourth electrode and the fifth electrode on the second circumference is pi/6, namely 30 degrees. The arc occupied by the sixth electrode 203 on the second circumference is 2 pi/3, i.e. 120 degrees.

In the present embodiment, if the face of the code wheel on which the fourth electrode, the fifth electrode, and the sixth electrode are arranged is taken as the upper face of the code wheel, the second brush is located above the second circumference of the code wheel on which the fourth electrode, the fifth electrode, and the sixth electrode are located. In this embodiment, when each end point of the second brush moves to a position corresponding to a second circumferential portion where a pad portion of the fourth electrode or the fifth electrode is located, the second brush is in contact with the pad member, that is, the second brush is electrically connected to the fourth electrode or the fifth electrode, and when each end point of the second brush moves to a position corresponding to a second circumferential portion where a non-pad portion of the fourth electrode or the fifth electrode is located, the second brush is in contact with the pad member, that is, the second brush is not electrically connected to the fourth electrode or the fifth electrode; in this embodiment, three endpoints of the second brush are spaced by 120 degrees, and the radian of the sixth electrode occupying the second circumference is 120 degrees, so that one endpoint of the second brush always contacts with the sixth electrode in the rotation process of the second brush.

The embodiment also discloses an axis structure of the magic cube, the axis structure of the magic cube is used for an outer layer rotating surface and an inner layer rotating surface, the number of the inner layer rotating surfaces on the same side of the outer layer rotating surface is 2, and the inner layer rotating surface on the same side of the outer layer rotating surface refers to an inner layer rotating surface which takes the inner core as a boundary and belongs to the same side of the inner core as the outer layer rotating surface; the difference between the axis structure of the magic cube in this embodiment and the axis structure of the magic cube in embodiment 1 is only that: as shown in fig. 7, the surface rotation sensor 23 used in the axial center structure of the magic cube of the present embodiment is the surface rotation sensor disclosed above in the present embodiment; in addition, the axis structure of the magic cube of the present embodiment further includes first sleeves 40, the number of which is the same as that of the central shaft.

In the present embodiment, the number of the surface rotation sensors 23 is the same as the number of the central shafts 22, and the code wheel and the first rotor of each surface rotation sensor are respectively mounted on each central shaft; after the code disc and the first rotor of each surface rotation sensor are arranged on each central shaft, each first sleeve is sleeved on each central shaft; a second rotor in the surface rotation sensor is arranged on a first sleeve and rotates along with the first sleeve; the central shafts sleeved with the first sleeves and the first sleeves on the central shafts penetrate through the through holes on the surface of the inner core together; the first sleeves rotate along the inner layer rotating surfaces in the magic cube correspondingly and respectively; a fourth electrode, a second electric brush, a sixth electrode and a power supply on a code disc in the surface rotation sensor form an electrifying loop, and a fifth electrode, the second electric brush, the sixth electrode and the power supply form an electrifying loop; the fourth electrode and the fifth electrode are respectively connected with two IO ports of the microcontroller.

In the embodiment, the sixth electrode is grounded, namely, connected with the negative end of the power supply; if the IO ports of the microcontroller, which are connected with the fourth electrode and the fifth electrode, are provided with pull-up resistors, the fourth electrode and the fifth electrode are connected with the positive end of the power supply through the pull-up resistors of the IO ports, and at the moment, the fourth electrode and the fifth electrode are not connected with a resistor and the power supply additionally; if the IO ports of the microcontroller, which are connected with the fourth electrode and the fifth electrode, do not have pull-up resistors, the fourth electrode and the fifth electrode are connected with the positive end of the power supply through resistors; the fourth electrode and the fifth electrode are communicated with the sixth electrode through a second brush; for the fourth electrode and the fifth electrode, when the second electric brush is in contact with a certain electrode (the second electric brush is in contact with a pad part of the electrode), an electrifying loop where the electrode is positioned is electrified, a low-level signal (0) is arranged on the electrode, and one end of the microcontroller, which is connected with the electrode, receives the low-level signal; when the second brush is not in contact with the electrode (referring to the other parts of the contact electrode except the pad part), the electrode is equivalent to a floating state, and one end of the microcontroller connected with the electrode receives a high-level signal (1). Therefore, in the present embodiment, the microcontroller may determine the contact condition of each electrode of the second brush and the fourth electrode according to the level signals received by the two IO ports; the rotation of second brush will change the contact condition of each electrode in the fourth electrode, therefore microcontroller can confirm the turned angle of second brush according to the level signal change condition that each IO port received in this embodiment to the turned angle in the magic aspect that further confirms drive center pin pivoted. Of course, in this embodiment, the electrical connection mode of the fourth electrode 201, the second brush 5, and the sixth electrode 203 and the electrical connection mode of the fifth electrode 202, the second brush 5, and the sixth electrode 203 may be other, as long as the microcontroller can receive two different level signals corresponding to the IO port in two cases of the second brush, the fourth electrode, and the fifth electrode being in contact with each other and not in contact with each other.

In the embodiment, the rotation sensors on all sides are connected through the flexible circuit board, and the microcontroller is arranged on the flexible circuit board; a first electrode, a second electrode, a fourth electrode and a fifth electrode on a code disc of each surface rotation sensor are respectively and correspondingly connected to each IO port of the microcontroller through a circuit on the flexible circuit board; the third electrode and the sixth electrode on the coded disc of each surface rotation sensor are connected with the circuit of the power-on loop on the flexible circuit board and then are connected into the power-on loop;

as shown in fig. 8, when the number of the surface rotation sensors is 6, after the 6 surface rotation sensors are connected by the flexible circuit board, and each surface rotation sensor is unfolded by the flexible circuit board, 5 of the surface rotation sensors are connected by the flexible circuit board to form a cross structure, and the other 1 surface rotation sensor is connected to 1 surface rotation sensor among the 5 surface rotation sensors by the flexible circuit board.

In this embodiment, as shown in fig. 5, each face rotation sensor is further provided with a first cover plate 31 and a second cover plate 32, the first cover plate is provided with a through hole, after the code wheel of the face rotation sensor and the first rotor are mounted on the central shaft, the first cover plate through hole passes through the central shaft, the bottom edge of the first cover plate is fixed on the code wheel, and the first rotor is covered by the first cover plate. The second cover plate is provided with a through hole, after a second rotor of the surface rotation sensor is arranged on the first sleeve, the through hole of the second cover plate penetrates through the first sleeve, the edge of the bottom of the second cover plate is fixed on the code disc, and the second rotor is covered by the second cover plate; the first cover plate and the second cover plate enable the structure of the surface rotation sensor to be more compact, and meanwhile, the first rotor, the first electric brush, the second rotor, the second electric brush and other parts on the axis structure of the magic cube are separated, so that the influence of other parts is avoided.

The axis structure of the magic cube in the embodiment is suitable for being applied to 4-order and 5-order magic cubes comprising outer-layer rotating surfaces and inner-layer rotating surfaces, wherein each central shaft is driven by each outer-layer rotating surface of the magic cube to rotate, and the first sleeve sleeved in each central shaft is driven by the inner-layer rotating surface which is connected with the central shaft and is positioned at the same side of the inner core.

The embodiment also discloses a magic cube, which comprises a plurality of central blocks and the axis structure of the magic cube, wherein each central shaft is correspondingly provided with the central block of one magic cube.

Example 3

The present embodiment discloses a surface rotation sensor of a magic cube, as shown in fig. 9, the difference from the surface rotation sensor of the magic cube in embodiment 1 is only that, the surface rotation sensor of the magic cube of the present embodiment further includes a second rotor 4, a second brush 5, a third rotor 6 and a third brush 7, a code disc is provided with a fourth electrode, a fifth electrode, a sixth electrode, a seventh electrode, an eighth electrode and a ninth electrode, the fourth electrode, the fifth electrode and the sixth electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a second circumference; the seventh electrode, the eighth electrode and the ninth electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a third circumference; the second circumference is at the periphery of the first circumference and the third circumference is at the periphery of the second circumference.

The first end point, the second end point and the third end point of the second electric brush are all arranged along the second circumference, and every two end points are separated by 2 pi/3 radian; the second brush is arranged on the second rotor, the second rotor drives three endpoints of the second brush to rotate relative to the fourth electrode, the fifth electrode and the sixth electrode along a second circumference, and the second brush is in contact with the fourth electrode, the fifth electrode and the sixth electrode through the three endpoints;

the radian of the sixth electrode on the second circumference is 2 pi/3;

The first end point, the second end point and the third end point of the third electric brush are all arranged along the third circumference, and every two end points are separated by 2 pi/3 radian; the third brush is arranged on the second rotor, the second rotor drives three endpoints of the third brush to rotate relative to the seventh electrode, the eighth electrode and the ninth electrode along the third circumference, and the third brush is in contact with the seventh electrode, the eighth electrode and the ninth electrode through the three endpoints;

the radian of the ninth electrode on the third circumference is 2 pi/3;

In the present embodiment, when the incremental profile rotation sensor is a 6-pulse incremental profile rotation sensor, i.e., n is 2, the positional arrangement of the second brush 5, the third brush 7, and the respective electrodes in the incremental profile rotation sensor is as shown in fig. 10. In the fourth electrode 201 and the fifth electrode 202, the number of the pad portions is 2, the number of the non-pad portions is 1, and the radian occupied by each of the pad portions and the non-pad portions on the second circumference is pi/6, i.e., 30 degrees, so that the radians occupied by the fourth electrode and the fifth electrode on the second circumference are pi/2, i.e., 90 degrees. And the radian occupied by the gaps between the fourth electrode and the sixth electrode and between the fifth electrode and the sixth electrode on the second circumference is pi/12, namely 15 degrees. The radian occupied by the gap between the fourth electrode and the fifth electrode on the second circumference is pi/6, namely 30 degrees. The arc occupied by the sixth electrode 203 on the second circumference is 2 pi/3, i.e. 120 degrees. In the seventh electrode 301 and the eighth electrode 302, the number of the pad portions is 2, the number of the non-pad portions is 1, and the radian occupied by each of the pad portions and the non-pad portions on the third circumference is pi/6, i.e., 30 degrees, so that the radians occupied by the seventh electrode and the eighth electrode on the second circumference are pi/2, i.e., 90 degrees. And the radian occupied by the gaps between the seventh electrode and the ninth electrode and between the eighth electrode and the ninth electrode on the third circumference is pi/12, namely 15 degrees. The radian occupied by the gap between the seventh electrode 301 and the eighth electrode 302 on the third circumference is pi/6, namely 30 degrees. The ninth electrode 303 occupies an arc of 2 pi/3, i.e. 120 degrees, on the third circumference.

In the embodiment, if the surface of the code wheel on which the fourth electrode, the fifth electrode and the sixth electrode are arranged is taken as the upper surface of the code wheel, for the code wheel, the second brush is located above the second circumference on which the fourth electrode, the fifth electrode and the sixth electrode are located, and the third brush is located above the second circumference on which the seventh electrode, the eighth electrode and the ninth electrode are located; in this embodiment, when each end point of the second brush moves to a position corresponding to a second circumferential portion where a pad portion of the fourth electrode or the fifth electrode is located, the second brush is in contact with the pad member, that is, the second brush is electrically connected to the fourth electrode or the fifth electrode, and when each end point of the second brush moves to a position corresponding to a second circumferential portion where a non-pad portion of the fourth electrode or the fifth electrode is located, the second brush is in contact with the pad member, that is, the second brush is not electrically connected to the fourth electrode or the fifth electrode; in this embodiment, three endpoints of the second brush are spaced by 120 degrees, and the radian of the sixth electrode occupying the second circumference is 120 degrees, so that one endpoint of the second brush always contacts with the sixth electrode in the rotation process of the second brush. In this embodiment, when each end point of the third brush moves to a position corresponding to the third circumferential portion where the land portion of the seventh electrode or the eighth electrode is located, the third brush is in contact with the land portion, that is, the third brush is electrically connected to the seventh electrode or the eighth electrode, and when each end point of the third brush moves to a position corresponding to the third circumferential portion where the non-land portion of the seventh electrode or the eighth electrode is located, the third brush is in contact with the land portion, that is, the third brush is not electrically connected to the seventh electrode or the eighth electrode; in this embodiment, three endpoints of the third brush are spaced by 120 degrees, and the radian of the ninth electrode occupying the third circumference is 120 degrees, so that one endpoint of the third brush always contacts with the ninth electrode in the rotation process of the third brush.

The embodiment also discloses an axial structure of the magic cube, as shown in fig. 11; the axis structure of the magic cube is used for an outer layer rotating surface and an inner layer rotating surface, the number of the inner layer rotating surfaces on the same side of the outer layer rotating surface is 2, and the inner layer rotating surfaces on the same side of the outer layer rotating surface refer to inner layer rotating surfaces which take an inner core as a boundary and belong to the same side of the inner core as the outer layer rotating surface; the difference between the axis structure of the magic cube in this embodiment and the axis structure of the magic cube in embodiment 1 is only that the surface rotation sensor used in the axis structure of the magic cube in this embodiment is the surface rotation sensor 23 disclosed above in this embodiment; in addition, the axis structure of the magic cube of the present embodiment further includes a first sleeve 40 and a second sleeve 41, which are the same in number as the central shaft 22.

In the present embodiment, the code wheel 1 and the first rotor 3 of each face rotation sensor 23 are respectively mounted on each center shaft; after the code disc 1 and the first rotor of each surface rotation sensor are installed on each central shaft, and after the code disc and the first rotor of each surface rotation sensor are installed on each central shaft, each first sleeve is sleeved on each central shaft, and each second sleeve is sleeved on each first sleeve; a third rotor in the surface rotation sensor is arranged on the first sleeve and rotates along with the first sleeve; a third rotor in the surface rotation sensor is arranged on a second sleeve and rotates along with the second sleeve; the central shafts sleeved with the first sleeve and the second sleeve and the first sleeve and the second sleeve on the central shafts penetrate through the through holes on the surface of the inner core together; the central shafts respectively rotate along with the outer rotating surfaces, corresponding to and connected with the outer rotating surfaces, in the magic cube, and the first sleeves and the second sleeves respectively rotate along with the inner rotating surfaces, corresponding to and connected with the inner rotating surfaces, in the magic cube; the inner layer of the magic cube connected with the second sleeve is closer to the center of the magic cube than the inner layer of the magic cube connected with the first sleeve; a fourth electrode, a second electric brush, a sixth electrode and a power supply on a code disc in the surface rotation sensor form an electrifying loop, and a fifth electrode, the second electric brush, the sixth electrode and the power supply form an electrifying loop; the fourth electrode and the fifth electrode are respectively connected with two IO ports of the microcontroller; a seventh electrode, a third electric brush, a ninth electrode and a power supply on a code disc in the surface rotation sensor form an electrifying loop, and an eighth electrode, the third electric brush, the ninth electrode and the power supply form an electrifying loop; the seventh electrode and the eighth electrode are respectively connected with two IO ports of the microcontroller.

In the embodiment, the ninth electrode is grounded, namely, connected with the negative end of the power supply; if the IO ports of the microcontroller, which are connected with the seventh electrode and the eighth electrode, are provided with pull-up resistors, the seventh electrode and the eighth electrode are connected with the positive end of the power supply through the pull-up resistors of the IO ports, and at the moment, the seventh electrode and the eighth electrode are not additionally connected with a resistor and the power supply; if the IO port of the microcontroller connected with the seventh electrode and the eighth electrode does not have a pull-up resistor, the seventh electrode and the eighth electrode are connected with the positive end of the power supply through a resistor; the seventh electrode and the eighth electrode are communicated with the ninth electrode through a third brush; for the seventh electrode and the eighth electrode, when the third electric brush is in contact with a certain electrode (which is a pad part of the contact electrode), the electrifying loop where the electrode is located is electrified, a low-level signal (0) is arranged on the electrode, and one end of the microcontroller connected with the electrode receives the low-level signal; when the third brush is not in contact with the electrode (referring to the other parts of the contact electrode except the pad part), the electrode is equivalent to a floating state, and one end of the microcontroller connected with the electrode receives a high-level signal (1). Therefore, in the present embodiment, the microcontroller may determine the contact condition of each of the third brush and the seventh electrode according to the level signals received by the two IO ports; the rotation of the third brush changes the contact condition of each electrode in the seventh electrode, so that in this embodiment, the microcontroller can determine the rotation angle of the third brush according to the level signal change condition received by each IO port, thereby further determining the rotation angle in the magic aspect driving the central shaft to rotate. Of course, in this embodiment, the electrical connection modes of the seventh electrode 301, the third brush 7 and the ninth electrode 303 and the eighth electrode 302, the third brush 7 and the ninth electrode 303 may be other, as long as the microcontroller can receive two different level signals corresponding to the IO port in two cases of the third brush and the seventh electrode, and the eighth electrode being in contact and non-contact.

In the present embodiment, as shown in fig. 12, the surface rotation sensors 23 are connected to each other by a flexible circuit board 26 on which a microcontroller is provided; a first electrode, a second electrode, a fourth electrode, a fifth electrode, a seventh electrode and an eighth electrode on the code disc of each side rotation sensor are respectively and correspondingly connected to an IO port of the microcontroller through circuits on the flexible circuit board; the second electrode, the fourth electrode and the ninth electrode on each face rotation sensor code disc are connected to the circuit of the power-on loop, and then the wires are connected together on the flexible circuit board and then connected into the power-on loop.

As shown in fig. 12, when the number of the surface rotation sensors is 6, after the 6 surface rotation sensors are connected by the flexible circuit board, and each surface rotation sensor is unfolded by the flexible circuit board, 5 of the surface rotation sensors are connected by the flexible circuit board to form a cross structure, and the other 1 surface rotation sensor is connected to 1 surface rotation sensor among the 5 surface rotation sensors by the flexible circuit board.

In this embodiment, each face rotation sensor is further provided with a first cover plate 31, a second cover plate 32 and a third cover plate 33, the first cover plate is provided with a through hole, after the code disc of the face rotation sensor and the first rotor are mounted on the central shaft, the first cover plate through hole passes through the central shaft, the bottom edge of the first cover plate is fixed on the code disc, and the first rotor is covered by the first cover plate. The second cover plate is provided with a through hole, after a second rotor of the surface rotation sensor is arranged on the first sleeve, the through hole of the second cover plate penetrates through the first sleeve, the edge of the bottom of the second cover plate is fixed on the code disc, and the second rotor is covered by the second cover plate; the third cover plate is provided with a through hole, the third cover plate through hole penetrates through the second sleeve after the third rotor is installed on the second sleeve, the edge of the bottom of the third cover plate is fixed on the code disc, and the third rotor is covered by the third cover plate; the first cover plate, the second cover plate and the third cover plate enable the structure of the surface rotation sensor to be more compact, and meanwhile, the first rotor and the first electric brush, the second rotor and the second electric brush, and the third rotor and the third electric brush are respectively separated from other parts on the axis structure of the magic cube, so that the influence of other parts is avoided.

The axis structure of the magic cube in the embodiment is suitable for being applied to 6-order and 7-order magic cubes comprising outer-layer rotating surfaces and inner-layer rotating surfaces, wherein 2 inner-layer rotating surfaces which are positioned on the same side with the outer-side rotating surfaces in the magic cube are provided. The axis structure of the magic cube comprises 6 central shafts, 6 first sleeves and 6 second sleeves.

Each central shaft is driven by each outer layer rotating surface of the magic cube to rotate, and a first sleeve sleeved in each central shaft is driven by an inner layer rotating surface which is connected with the central shaft and the outer layer of which is positioned at the same side of the inner core to rotate; the second sleeve sleeved in each central shaft is driven to rotate by an inner layer rotating surface which is connected with the central shaft and the outer layer of which is positioned at the same side of the inner core.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. An incremental profile rotation sensor of a magic cube is characterized by comprising a code disc, a first electric brush and a first rotor, wherein a first electrode, a second electrode and a third electrode are arranged on the code disc, and are arranged on the same circumference of the code disc surface, and the circumference is defined as a first circumference;

the radian of the third electrode on the first circumference is 2 pi/3;

2. The incremental profile rotation sensor of claim 1, further comprising a second brush and a second rotor; the coded disc is provided with a fourth electrode, a fifth electrode and a sixth electrode, the fourth electrode, the fifth electrode and the sixth electrode are arranged on the same circumference of the coded disc surface, and the circumference is defined as a second circumference; the second circumference is positioned at the periphery of the first circumference;

the radian of the sixth electrode on the second circumference is 2 pi/3;

3. The incremental profile rotation sensor of claim 1, further comprising a second brush, a second rotor, a third brush, and a third rotor; the code disc is provided with a fourth electrode, a fifth electrode, a sixth electrode, a seventh electrode, an eighth electrode and a ninth electrode, the fourth electrode, the fifth electrode and the sixth electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a second circumference; the seventh electrode, the eighth electrode and the ninth electrode are arranged on the same circumference of the code disc surface, and the circumference is defined as a third circumference; the second circumference is positioned at the periphery of the first circumference, and the third circumference is positioned at the periphery of the second circumference;

the radian of the sixth electrode on the second circumference is 2 pi/3;

the radian of the ninth electrode on the third circumference is 2 pi/3;

4. An axis structure of a magic cube is characterized by comprising an inner core with a hollow inner part, a plurality of central shafts and a surface rotation sensor for detecting the rotation of a rotating layer of the magic cube, wherein the surface rotation sensor is the surface rotation sensor according to any one of claims 1 to 3;

5. A pivot structure for a puzzle according to claim 4, wherein the pivot structure further comprises a number of first sleeves equal to the number of central axes; the code disc and the first rotor of each surface rotation sensor are respectively arranged on each central shaft; after the code disc and the first rotor of each surface rotation sensor are arranged on each central shaft, each first sleeve is sleeved on each central shaft; a second rotor in the surface rotation sensor is arranged on a first sleeve and rotates along with the first sleeve; the central shafts sleeved with the first sleeves and the first sleeves on the central shafts penetrate through the through holes on the surface of the inner core together; the first sleeves rotate along the inner layer rotating surfaces in the magic cube correspondingly and respectively; a fourth electrode, a second electric brush, a sixth electrode and a power supply on a code disc in the surface rotation sensor form an electrifying loop, and a fifth electrode, the second electric brush, the sixth electrode and the power supply form an electrifying loop; the fourth electrode and the fifth electrode are respectively connected with two IO ports of the microcontroller;

6. The axial center structure of a magic cube according to claim 5, wherein the first rotor, the second rotor, the third rotor and the code disc of the surface rotation sensor are provided with through holes; the surface rotation sensor is mounted on the central shaft in the following way: a coded disc of the surface rotation sensor and the first rotor sequentially penetrate through the central shaft and are arranged at the end of the central shaft where the stop block is located; the inner wall of a first rotor through hole of the surface rotation sensor is attached to the outer wall of the central shaft and rotates along with the central shaft; a second rotor of the surface rotation sensor is arranged at the bottom end of the first sleeve through a through hole; the inner wall of a through hole of a second rotor of the surface rotation sensor is attached to the outer wall of the first sleeve and rotates along with the first sleeve; a third rotor of the surface rotation sensor is arranged at the bottom end of the second sleeve through a through hole; the inner wall of a third rotor through hole of the surface rotation sensor is attached to the outer wall of the second sleeve and rotates along with the second sleeve.

7. The axial center structure of a magic cube according to claim 5, wherein the surface rotation sensors are connected through a flexible circuit board, and the microcontroller is arranged on the flexible circuit board; a first electrode, a second electrode, a fourth electrode, a fifth electrode, a seventh electrode and an eighth electrode on the code disc of each side rotation sensor are respectively and correspondingly connected to each IO port of the microcontroller through a circuit on the flexible circuit board; the third electrode, the sixth electrode and the ninth electrode on the coded disc of each surface rotation sensor are connected to the circuit of the power-on loop and then connected to the power-on loop on the flexible circuit board;

8. The axial center structure of a magic cube according to claim 5, further comprising a spring washer, a first cover plate, a second cover plate and a third cover plate;

9. The axial center structure of a magic cube according to claim 4, wherein the central shaft is a screw, and the stop block at one end of the central shaft is a nut of the screw.

10. A puzzle cube, comprising a plurality of central pieces and a central structure of the puzzle cube according to any one of claims 4 to 9, wherein each central piece is provided with a central piece of the puzzle cube.