CN212854599U

CN212854599U - Central block structure of magic cube

Info

Publication number: CN212854599U
Application number: CN202021250274.3U
Authority: CN
Inventors: 王跃辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-02
Anticipated expiration: 2030-06-30

Abstract

The utility model belongs to the technical field of the technique of magic cube and specifically relates to a center block structure of magic cube is related to, including the center block body, the center block body includes that center block casing and lid close the center block cap of center block casing, be equipped with straining device in center block casing and the center block cap, the center block body passes through straining device and connects in the center pin. The utility model has scientific and reasonable design and simple structure, compared with the prior art, the central shaft is clamped with the positioning block through the limiting shaft, so that the stress between the central shaft and the positioning block is balanced, and the stress between the central shaft and the central block body is balanced; on the one hand, be favorable to prolonging the life-span of magic cube, on the other hand is favorable to optimizing the experience of playing the magic cube.

Description

Central block structure of magic cube

Technical Field

The utility model belongs to the technical field of the technique of magic cube and specifically relates to a center block structure of magic cube is related to.

Background

The magic cube all has a plurality of unit pieces and multidimension to link the axle and form, use traditional three-order magic cube as an example, its main part is the square structure, including twenty six little squares and a three-dimensional even axle, little square includes six central block that are located every face central point of magic cube respectively, eight corner blocks that are located magic cube end corner portion, twelve are located the arris piece between the adjacent two corner blocks respectively, like this, every face of magic cube is nine little squares, based on the rotation characteristic of three-dimensional even axle, every layer of magic cube all can free rotation. When the magic cube is assembled, the six central blocks are correspondingly connected to the end parts of the three-dimensional connecting shaft, and the corner blocks and the edge blocks are clamped inside the central blocks so as to prevent the magic cube from being scattered.

The prior chinese utility model with publication number CN206777824U discloses an assembly structure of a magic cube axle center, which comprises a multidimensional connecting shaft and a plurality of center blocks, wherein the multidimensional connecting shaft comprises a shaft head and a plurality of support shafts with the same number as the center blocks, one end of each support shaft is fixedly arranged on the shaft head, and the other end of each support shaft extends towards the direction far away from the shaft head and is correspondingly arranged in each center block one by one; the supporting shaft penetrates through the part in the central block to form a penetrating end, a fixed block, a spring and a limiting part are arranged on the penetrating end, and the fixed block is arranged on the penetrating end and can move towards the direction close to the shaft head; the spring is sleeved outside the penetration end; the spring is clamped between the fixed block and the inner side end wall of the central block and is used for providing elastic stress for jacking the central block towards the direction close to the shaft head; the limiting part is convexly arranged at the end part of the penetrating end far away from the shaft head; the fixed block is provided with a first through hole and a fixed groove; the first through hole penetrates through the fixing block along the axial direction of the supporting shaft; the fixing groove is formed in the top end of the fixing block; the limiting part is used for penetrating through the first through hole when the fixing block moves towards the direction close to the shaft head, and is embedded in the fixing groove so that the fixing block is fixedly connected with the through end. The limiting block on the supporting shaft is clamped in the fixing groove of the fixing block, so that the supporting shaft is connected with the central block.

The above prior art solutions have the following drawbacks: because stopper and fixed slot joint for the connection of back shaft and center block passes through the stopper atress, at the in-process of rotating the magic cube, can cause the atress unbalanced, on the one hand, leads to the magic cube to damage easily, and on the other hand influences the enjoyment of playing the magic cube.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a balanced magic cube center block structure of atress.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a center block structure of a magic cube comprises a center block body, wherein the center block body comprises a center block shell and a center block shell cover covering the center block shell, tensioning mechanisms are arranged in the center block shell and the center block shell cover, and the center block body is connected to a center shaft through the tensioning mechanisms.

The utility model discloses further set up to: the tail end of the central shaft is provided with a limiting shaft, and the limiting shaft is clamped with the tensioning mechanism; the tensioning mechanism preferably comprises a positioning block, and the positioning block is clamped with the limiting shaft; the locating piece is preferably provided with a locating groove, and the limiting shaft is arranged in the locating groove.

The utility model discloses further set up to: the positioning block is provided with a positioning hole and a mounting hole which are matched with the central shaft, the mounting hole is respectively communicated with the positioning hole and the positioning groove, and the positioning hole is communicated with the positioning groove; the diameter of the mounting hole is preferably larger than that of the positioning hole, and the diameter of the mounting hole is larger than that of the positioning groove; the diameter of the positioning groove is preferably larger than that of the positioning hole.

The utility model discloses further set up to: the tensioning mechanism comprises an elastic mechanism, the elastic mechanism comprises a bearing mechanism and a compression spring positioned outside the bearing mechanism, and two ends of the compression spring are abutted against the bearing mechanism; the bearing mechanism is preferably provided with a check ring and a limit ring, and two ends of the compression spring are respectively abutted against the check ring and the limit ring.

The utility model discloses further set up to: the bearing mechanism comprises a bearing bottom block and a bearing top block clamped with the bearing bottom block, and a clamping mechanism is arranged between the bearing bottom block and the bearing top block.

The utility model discloses further set up to: the bearing bottom block is provided with a retaining ring, the bearing top block is provided with a limiting ring, and two ends of the compression spring are respectively abutted against the retaining ring and the limiting ring.

The utility model discloses further set up to: the clamping mechanism comprises a buckling hole formed in the bearing bottom block and a buckle formed in the bearing top block, and the buckle is buckled into the buckling hole.

The utility model discloses further set up to: an oil storage module is arranged between the tensioning mechanism and the central block shell; the oil outlet is preferably formed in the center block shell and located at the bottom of the oil storage module.

The utility model discloses further set up to: the tensioning mechanism comprises a positioning block, the positioning block is arranged on the bearing top block, the bearing top block is provided with a first step portion, the positioning block is provided with a first adjusting block matched with the first step portion, and the first adjusting block is abutted to the first step portion.

The utility model discloses further set up to: the inner wall of center block casing is equipped with a plurality of calories of strips, the center block cap is equipped with a joint section of thick bamboo, the outer wall of a joint section of thick bamboo is equipped with the spacing groove fixed with calorie strip joint, the card strip card is gone into the spacing inslot.

To sum up, the utility model discloses a beneficial technological effect does:

1. the utility model has scientific and reasonable design and simple structure, compared with the prior art, the central shaft is clamped with the positioning block through the limiting shaft, so that the stress between the central shaft and the positioning block is balanced, and the stress between the central shaft and the central block body is balanced; on one hand, the service life of the magic cube is prolonged, and on the other hand, the experience of playing the magic cube is optimized;

2. an elastic mechanism is arranged between the positioning block and the central block shell, so that the positioning block can reciprocate back and forth along the central direction of the central shaft along the central axis, the locking of the magic cube in the rotating process is reduced, and the experience of playing the magic cube is optimized;

3. the elastic mechanism comprises a bearing mechanism and a compression spring sleeved on the bearing mechanism, the positioning block is arranged on the bearing mechanism, and when the positioning block compresses the bearing mechanism, the compression spring always has a tendency of driving the positioning block to reset, so that the resetting of the positioning block is facilitated, and the experience of playing the magic cube is optimized;

4. an oil storage module is arranged between the central block shell and the tensioning mechanism, and the oil storage module covers the oil outlet hole so as to facilitate the oil storage module to be used for filling oil to the magic cube;

5. bear the kicking block and be equipped with first step portion, the locating piece is equipped with first regulating block, and first regulating block contradicts with first step portion, rotates the locating piece, and first regulating block moves in first step portion, realizes adjusting the wheel base of center piece body to the experience of magic cube is played in the optimization.

Drawings

Figure 1 is an exploded view of the magic cube and setting tool of the present invention;

FIG. 2 is an exploded view of the center block body, center shaft and debugging tool of the present invention;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged partial schematic view of portion B of FIG. 2;

fig. 5 is an exploded view of the center block body and the debugging tool of the present invention;

fig. 6 is an exploded view of the corner block body of the present invention;

fig. 7 is an exploded view of the corner block body of the present invention;

fig. 8 is an exploded view of the prism body of the present invention;

fig. 9 is an exploded view of the prism block body of the present invention.

In the figure, 1, a magic cube; 2. a central shaft; 21. a connecting shaft; 211. a base shaft; 212. an intermediate shaft; 213. a limiting shaft;

3. a center block body; 31. a center block housing; 311. clamping the strip; 312. connecting holes; 313. an oil outlet hole; 314. a leakage-proof column; 32. a center block shell cover; 321. a clamping cylinder; 322. a limiting groove; 33. a seal ring;

4. a corner block body; 41. corner block clamping feet; 411. a third oil sump; 412. inserting and buckling; 42. a corner block housing; 421. a second adjustment aperture; 422. a third scale; 423. a fixed block; 424. a support groove; 425. a fixing hole; 426. a second oil sump; 427. a clamping block; 428. inserting grooves; 43. a corner block housing cover; 431. a fixed cylinder; 432. splicing sheets; 433. a card slot; 434. splicing blocks; 435. a connecting frame; 44. a magnetic housing; 45. wrapping the shell; 451. a shell groove; 452. a third regulating block; 453. a linkage groove; 46. an adjustment housing; 461. a housing block; 462. a convex shell; 463. a third identifier; 47. a fixed mount; 471. fixing grooves;

5. a prism block body; 51. the edge block clamping component; 511. a torsion spring; 512. inserting a rod; 52. a prism block housing; 521. a first adjustment aperture; 522. a second scale; 523. a limiting hole; 524. a plug-in frame; 525. a clamping hole; 526. inserting holes; 527. a plug-in barrel; 528. a first oil sump; 53. a prism block shell cover; 531. a cover sheet; 532. inserting the column; 533. splicing frames; 54. a magnetic shield; 541. a wrapping cover; 5411. a cover groove; 5412. a drive slot; 5413. a second regulating block; 542. an adjustment cover; 5421. a cover block; 5422. a protrusion; 5423. a second identifier; 55. a bearing frame; 551. a plug-in housing; 552. fixing the rod; 56. a clamping pin structure; 57. an elastic seat; 571. splicing holes; 572. splicing grooves; 58. a large clamping pin; 581. a through hole; 582. a groove; 583. a limiting rod; 584. an insertion block; 59. buckling a shaft; 591. buckling a head; 592. buckling blocks; 593. an elastic groove;

6. a tensioning mechanism; 61. an elastic mechanism; 611. a carrying mechanism; 612. a compression spring; 613. a bearing bottom block; 6131. a retainer ring; 6132. an oil storage tank; 614. carrying a top block; 6141. a limiting ring; 6142. a circular groove; 6143. an inner tank; 6144. a first step portion; 6145. a first scale; 615. a clamping mechanism; 6151. buckling holes; 6152. buckling; 616. an oiling structure; 6161. an oil filling hole; 6162. an oil filler tube; 62. positioning blocks; 621. a bump; 622. positioning a groove; 623. positioning holes; 624. mounting holes; 625. a first identifier; 626. a first regulating block; 63. an oil storage module; 631. a backflow prevention film; 632. storing an oil film; 633. an anti-flow film;

7. a linkage mechanism; 71. wrapping the sleeve; 711. a second step section; 72. a linkage pipe; 73. a compression spring;

8. a linkage device; 81. a wrapping drum; 811. a third step portion; 82. a gear mechanism; 821. a shaft lever; 8211. a tripod; 8212. a support bar; 822. a bevel gear; 8221. extruding a groove; 823. a linkage gear; 83. a return spring;

9. debugging a tool; 91. an adjustment groove; 92. a debugging tank; 93. and (4) anti-skid lines.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to figure 1, there is disclosed a puzzle 1 and a commissioning tool 9 for commissioning the puzzle 1. Magic cube 1 includes center pin 2, a plurality of center piece body 3, a plurality of hornblock body 4 and a plurality of arris piece body 5, and center pin 2 is located magic cube 1's center, and center pin 2's end is connected with center piece body 3, and arris piece body 5 contradicts with center piece body 3's lateral wall, and hornblock body 4 contradicts with arris piece body 5's both sides lateral wall, and center piece body 3 blocks hornblock body 4 and arris piece body 5 between center piece body 3 and center pin 2 to form magic cube 1.

Referring to fig. 1 and 2, the central shaft 2 includes six connecting shafts 21, one end portions of the six connecting shafts 21 are fixed to each other, and each connecting shaft 21 is perpendicular to the adjacent connecting shaft 21, so that two connecting shafts 21 disposed correspondingly to each other are symmetrically disposed, and the axes of the two connecting shafts 21 disposed correspondingly to each other are on the same straight line; when the connecting shaft 21 is connected to the center block bodies 3, the two center block bodies 3 corresponding to each other can be symmetrically disposed. The cross section of connecting axle 21 is circular setting, and the cross section diameter ratio of connecting axle 21 one end is big than the cross section diameter of the other end, and the one end that connecting axle 21 connects center piece body 3 is crescent to the other end that connecting axle 21 kept away from center piece body 3 promptly, and the center of center pin 2 diminishes to the end of center pin 2 gradually promptly for the center of center pin 2 can bear bigger tensile force. The connecting shaft 21 comprises a base shaft 211, an intermediate shaft 212 and a limiting shaft 213 which are sequentially arranged, the axes of the base shaft 211, the intermediate shaft 212 and the limiting shaft 213 are on the same straight line, the tail end of the base shaft 211 is fixed with the intermediate shaft 212, and one end, far away from the base shaft 211, of the intermediate shaft 212 is fixed with the limiting shaft 213. The cross sections of the base shaft 211, the intermediate shaft 212 and the limiting shaft 213 are all arranged in a circular shape, the diameter of the base shaft 211 is equal to that of the limiting shaft 213, the diameter of the base shaft 211 is larger than that of the intermediate shaft 212, when the connecting shaft 21 is clamped with the central block body 3, the base shaft 211, the intermediate shaft 212 and the limiting shaft 213 are in contact with the central block body 3, and the limiting shaft 213 and the central block body 3 are mutually separated to limit the central block body 3 to be separated from the connecting shaft 21, namely to limit the central block body 3 to be separated from the central shaft 2; the diameter of the base shaft 211 can also be larger than that of the limiting shaft 213, the diameter of the limiting shaft 213 is larger than that of the intermediate shaft 212, when the connecting shaft 21 is clamped with the central block body 3, the base shaft 211, the intermediate shaft 212 and the limiting shaft 213 are in contact with the central block body 3, and the limiting shaft 213 and the central block body 3 are mutually separated to limit the central block body 3 to be separated from the connecting shaft 21, namely to limit the central block body 3 to be separated from the central shaft 2. Because the cross section of the limiting shaft 213 is in the circular arrangement, the force of the limiting shaft 213 on the central block body 3 is balanced, and the experience of the magic cube 1 is optimized. The base shaft 211, the intermediate shaft 212 and the limit shaft 213 are integrally formed, and the six connecting shafts 21 are integrally formed, namely the central shaft 2 is integrally formed, so that the processing procedure of the central shaft 2 is simplified, and the efficiency of producing the central shaft 2 is improved.

The central shaft 2 can be made of plastic or also of powdered metal. When the central shaft 2 is made of metal powder, precipitation hardening stainless steel powder, such as that manufactured by the shoddy materials science and technology ltd of the Hunan province, is generally used; the precipitation hardening stainless steel powder is made of FDC17-4PHB, and is mixed with adhesive to form raw material, wherein the adhesive comprises at least one of pom plastic, polyethylene PE and ethylene-vinyl acetate copolymer EVA. Mixing FDC17-4PHB powder and an adhesive in a weight ratio of 10:1, heating to 150-; adding the particles into an injection molding machine, melting the adhesive to endow metal powder with good fluidity so that the metal powder can be conveniently injected into a mold by the injection molding machine to obtain a blank, degreasing the blank by a Catamold catalytic degreasing method, and then sending the degreased blank into a sintering furnace for 8 hours; the temperature in the sintering furnace is kept between 1200 ℃ and 1400 ℃, the blank is insulated in the sintering furnace for 22 hours, metal atoms in FDC17-4PHB powder are activated at high temperature and migrate and diffuse, so that the density of the blank is rapidly improved, and meanwhile, the size of the blank is shrunk by 10-20%, so that the hardness, strength, magnetism, corrosion resistance and heat conductivity of the blank are close to the forging level; and cooling, taking out the blank, and shaping the blank to obtain the central shaft 2.

Referring to fig. 2, 4 and 5, the central block body 3 includes a central block housing 31 and a central block housing cover 32 covering the central block housing 31, the inner wall of the central block housing 31 is provided with a plurality of clamping bars 311, one side of the central block housing cover 32 covering the central block housing 31 is provided with a clamping cylinder 321, and the outer wall of the clamping cylinder 321 is provided with a limiting groove 322 clamped and fixed with the clamping bars 311; when the clamping cylinder 321 of the center block case cover 32 is inserted into the center block case 31, the clamping bar 311 is clamped into the limiting groove 322 to limit the clamping cylinder 321 from being released from the center block case 31, so as to limit the center block case cover 32 from being released from the center block case 31. The bottom of the center block shell 31 is provided with a connecting hole 312 matched with the center shaft 2, the connecting hole 312 is located in the middle of the center block shell 31, and the connecting shaft 21 of the center shaft 2 penetrates through the connecting hole 312 and extends into the center block shell 31, so that the center shaft 2 is connected with the center block shell 31. A tensioning mechanism 6 for fixing the central shaft 2 is arranged between the central block shell 31 and the central block shell cover 32, the tensioning mechanism 6 comprises an elastic mechanism 61 and a positioning block 62 arranged on the elastic mechanism 61, the elastic mechanism 61 is abutted against the bottom of the central block shell 31, and the positioning block 62 is positioned on one side of the elastic mechanism 61 departing from the bottom of the central block shell 31; the positioning block 62 is provided with a positioning hole 623 matched with the intermediate shaft 212, the connecting shaft 21 of the central shaft 2 penetrates through the positioning hole 623, the intermediate shaft 212 is in contact with the hole wall of the positioning hole 623, the limiting shaft 213 is in contact with the positioning block 62, and the limiting shaft 213 and the positioning block 62 are mutually separated, so that the central shaft 2 and the central block body 3 are installed. Because the cross section of the limiting shaft 213 is arranged in a circular shape, the stress of the limiting shaft 213 on the positioning block 62 is balanced, and the experience of the magic cube 1 is optimized. One side of the positioning block 62 departing from the elastic mechanism 61 is provided with a projection 621, the projection 621 is in a rectangular shape, the projection 621 is provided with a positioning groove 622, the positioning groove 622 is communicated with the positioning hole 623, the diameter of the positioning groove 622 is larger than that of the positioning hole 623, and the limiting shaft 213 is arranged in the positioning groove 622, so that the center block shell 31 and the center block shell cover 32 are more compact. The positioning block 62 is provided with a mounting hole 624, the mounting hole 624 is communicated with the positioning hole 623 and the positioning groove 622, the diameter of the mounting hole 624 is larger than that of the positioning hole 623, the diameter of the mounting hole 624 is larger than that of the positioning groove 622, the diameter of the mounting hole 624 is larger than that of the limiting shaft 213, when the connecting shaft 21 of the central shaft 2 is assembled with the positioning hole 623, the connecting shaft 21 firstly penetrates through the mounting hole 624, and the intermediate shaft 212 of the connecting shaft 21 is clamped into the positioning hole 623;

referring to fig. 2 and fig. 5, the elastic mechanism 61 includes a bearing mechanism 611 and a compression spring 612 sleeved on the bearing mechanism 611, the bearing mechanism 611 includes a bearing bottom block 613 and a bearing top block 614 located above the bearing bottom block 613, a clamping mechanism 615 is disposed between the bearing bottom block 613 and the bearing top block 614, the bearing bottom block 613 and the bearing top block 614 are connected by the clamping mechanism 615, the compression spring 612 is disposed outside the bearing bottom block 613 and the bearing top block 614, and two ends of the compression spring 612 respectively abut against the bearing bottom block 613 and the bearing top block 614; the bearing bottom block 613 is provided with a retaining ring 6131 extending outwards, the bearing top block 614 is provided with a limiting ring 6141 extending outwards, two ends of the compression spring 612 are respectively abutted against the retaining ring 6131 of the bearing bottom block 613 and the limiting ring 6141 of the bearing top block 614, when the bearing top block 614 moves towards the bearing bottom block 613, the pressure applied to the compression spring 612 is increased, and when the bearing top block 614 moves towards the direction far away from the bearing bottom block 613, the pressure applied to the compression spring 612 is decreased; the clamping mechanism 615 includes a buckle hole 6151 disposed on the bearing bottom block 613 and a buckle 6152 disposed on the bearing top block 614, and the buckle 6152 is buckled into the buckle hole 6151 to realize splicing of the bearing bottom block 613 and the bearing top block 614. The bearing top block 614 is provided with a circular groove 6142, and the positioning block 62 is arranged in the circular groove 6142. An adjusting mechanism for adjusting the axle distance of the central block body 3 is arranged between the bearing top block 614 and the positioning block 62, the adjusting mechanism comprises an inner groove 6143 arranged in the circular groove 6142, four groups of first step portions 6144 arranged on the inner groove 6143 and a first adjusting block 626 arranged on the positioning block 62, and the first adjusting block 626 is provided with four groups corresponding to the four groups of first step portions 6144; the adjusting distance between two adjacent steps of the first step portion 6144 is 0.1mm, the cross section of the first adjusting block 626 is arranged in a triangular shape, and the first adjusting block 626 abuts against the first step portion 6144 so as to adjust the axle distance of the central block body 3; the protrusion 621 is rotated, the protrusion 621 and the positioning block 62 rotate synchronously, and the first adjusting block 626 of the positioning block 62 rotates at the first step portion 6144, so as to drive the bearing top block 614 to reciprocate back and forth in the direction of the bearing bottom block 613, thereby adjusting the compression state of the compression spring 612 and realizing the adjustment of the axle distance of the central block body 3;

referring to fig. 2, 3, 4 and 5, an oil storage module 63 is disposed between the bottom of the central block housing 31 and the bearing bottom block 613, an oil storage tank 6132 is disposed at the bottom of the bearing bottom block 613, the oil storage module 63 includes an anti-backflow film 631, an oil storage film 632 and an anti-backflow film 633 which are sequentially disposed in the oil storage tank 6132, and the anti-backflow film 633 is abutted against the central block housing 31. The oil reservoir film 632 is preferably a resilient oil reservoir bladder, preferably a sponge or silicone bladder. The anti-backflow film 631 can be made of pvc and pet materials so as to balance the extrusion of the oil storage film 632. The anti-flow film 633 is preferably made of rubber so that oil can penetrate between the center block case 31 and the anti-flow film 633. The oil outlet 313 is formed in the bottom of the center block shell 31, and the oil outlet 313 is located at the bottom of the anti-flow film 633, so that lubricating oil in the center block shell 31 flows to the prism block body 5 and the corner block body 4 through the oil outlet 313, friction between the prism block body 5 and the corner block body 4 is reduced, abrasion is reduced, and the service life of the magic cube 1 is prolonged; the bottom of the central block shell 31 is provided with a leakage-proof column 314, the leakage-proof column 314 is positioned in the middle of the oil storage module 63, the connecting hole 312 penetrates through the leakage-proof column 314, and the height of the leakage-proof column 314 is not less than the thickness of the oil storage module 63 so as to limit the leakage of the lubricating oil in the oil storage module 63 from the leakage-proof column 314. A sealing ring 33 is arranged between the central block shell 31 and the central block shell cover 32, the sealing ring 33 is clamped on the circumferential outer wall of a clamping cylinder 321 of the central block shell cover 32, the sealing ring 33 is positioned on one side of the limiting groove 322, which is far away from the central block shell 31, the central block shell cover 32 covers the central block shell 31, and the sealing ring 33 is mutually extruded between the clamping cylinder 321 of the central block shell cover 32 and the inner wall of the central block shell 31, so that the central block shell 31 and the central block shell cover 32 are in a sealing state to limit the overflow of lubricating oil. The bearing mechanism 611 is further provided with a refueling structure 616 for refueling the oil storage module 63, that is, a refueling structure 616 for refueling the oil storage module 63 is arranged between the bearing bottom block 613 and the bearing top block 614, the refueling structure 616 comprises a refueling hole 6161 arranged on the bearing top block 614 and a refueling pipe 6162 arranged on the bearing bottom block 613, one end of the refueling pipe 6162 penetrates through the bearing bottom block 613 and is communicated with the oil storage groove 6132, the other end of the refueling pipe 6161 extends into the refueling hole 6161, the end of the other end of the refueling pipe is arranged on the surface of the refueling hole 6161, and the refueling hole 6161 is positioned in the circular groove 6142; lubricating oil is dripped into the oil filling pipe 6162 and flows into the oil storage tank 6132 along the oil filling pipe 6162, so that the oil storage film 632 can store the lubricating oil;

four groups of first scales 6145 used for representing the wheel base are arranged on the surface of the circular groove 6142, the first scales 6145 are arranged corresponding to the first stepped portion 6144, a first mark 625 pointing to the first scales 6145 is arranged on the side wall of the bump 621, and the first scales 6145 comprise oil filling holes 6161; when the first mark 625 points to the oil filling hole 6161, the axle distance of the central block body 3 is the largest, and the pressure applied to the compression spring 612 is the smallest; when the first mark 625 points to the shortest first scale 6145, the axle distance of the central block body 3 is the smallest, and the pressure applied to the compression spring 612 is the largest.

Referring to fig. 8 and 9, the prism body 5 includes a prism clip assembly 51, a prism housing 52 clipped on the prism clip assembly 51, and a prism housing cover 53 covering the prism housing 52;

the rib block clamping foot assembly 51 comprises a clamping foot structure 56 in sliding clamping connection with the corner block body 4 and a buckling shaft 59 penetrating through the clamping foot structure 56 to be clamped into the rib block shell 52, the clamping foot structure 56 comprises a large clamping foot 58 in sliding clamping connection with the corner block body 4 and an elastic seat 57 arranged at the bottom of the large clamping foot 58, the buckling shaft 59 penetrates through the elastic seat 57 and the large clamping foot 58 in sequence to be buckled into the rib block shell 52, and the elastic seat 57 and the large clamping foot 58 can both rotate along the buckling shaft 59. The elastic seat 57 is provided with a splicing hole 571 matched with the buckling shaft 59, the large clamping leg 58 is provided with a through hole 581 through which the buckling shaft 59 passes, one end of the buckling shaft 59 is provided with a buckling head 591, the diameter of the buckling head 591 is larger than that of the splicing hole 571, so that the buckling head 591 is buckled at the bottom of the elastic seat 57 away from the large clamping leg 58, and when the buckling shaft 59 sequentially passes through the splicing hole 571 of the elastic seat 57 and the through hole 581 of the large clamping leg 58 and is buckled into the prism block shell 52, the buckling head 591 of the buckling shaft 59 is buckled at the bottom of the elastic seat 57. A torsion spring 511 is arranged between the large clamping foot 58 and the elastic seat 57, and the torsion spring 511 is sleeved on the buckling shaft 59. Splicing grooves 572 are formed in two sides of the splicing hole 571, grooves 582 corresponding to the splicing grooves 572 are formed in the through hole 581, inserting rods 512 are arranged at two ends of the torsion spring 511, and the inserting rods 512 are respectively inserted into the splicing grooves 572 and the grooves 582; when the elastic seat 57 and the large locking leg 58 rotate along the fastening shaft 59, due to the action of the torsion spring 511, the torsion spring 511 always has a force to drive the elastic seat 57 and the large locking leg 58 to restore to the original shape, so that the elastic seat 57 and the large locking leg 58 restore to the original shape, and the maximum angle of relative rotation between the elastic seat 57 and the large locking leg 58 is 8 °; because the torsion spring 511 is arranged between the large clamping pin 58 and the elastic seat 57, the elastic seat 57 and the large clamping pin 58 can rotate relatively, so that the elastic seat 57 and the prism block shell 52 can rotate relatively, the rotation efficiency of the magic cube 1 during error tolerance is improved, and the magic cube is prevented from being clamped;

two groups of magnetic devices are arranged in the prism block shell 52, a linkage mechanism 7 is arranged between the two groups of magnetic devices, each magnetic device comprises a magnetic cover 54 and a magnetic part arranged in the magnetic cover 54, and the magnetic covers 54 are contacted with the side wall of the prism block shell 52 so that the magnetic parts in the prism block shell 52 and the magnetic parts in the corner block body 4 can interact with each other; the sidewall of the prism block shell 52 is provided with a first adjusting hole 521, and the magnetic cover 54 is arranged in the first adjusting hole 521, so that the interaction between the magnetic part in the prism block shell 52 and the magnetic part in the prism block body 4 is further optimized. The magnetic cover 54 includes a wrapping cover 541 and an adjusting cover 542 covering the wrapping cover 541, and the magnetic member is disposed in the wrapping cover 541. The package cover 541 is provided with a cover groove 5411, the adjusting cover 542 is provided with a cover block 5421 clamped into the cover groove 5411, the cover block 5421 of the adjusting cover 542 is clamped into the cover groove 5411 of the package cover 541, and splicing of the package cover 541 and the adjusting cover 542 is achieved. Protrusions 5422 are arranged on the surface, away from the wrapping cover 541, of the adjusting cover 542, the protrusions 5422 are arranged in a rectangular shape, three groups of second marks 5423 are arranged on the surface of the protrusions 5422, and three groups of second scales 522 are arranged on the outer wall of the prism block shell 52 corresponding to the second marks 5423; the protrusion 5422 is rotated so that the protrusion 5422 points to the graduation mark of the second graduation 522 to adjust the two sets of magnetic members to approach or move away from each other, thereby adjusting the magnetic means inside the prism block housing 52. The surface of the adjusting cover 542, which is far away from the wrapping cover 541, is also provided with three groups of second marks 5423, the diameter of the adjusting cover 542 is larger than that of the first adjusting hole 521, and the diagonal line of the protrusion 5422 is smaller than that of the first adjusting hole 521, so that the adjusting cover 542 is attached to the inner wall of the prism block shell 52, and the protrusion 5422 is arranged in the first adjusting hole 521;

the linkage mechanism 7 comprises two groups of wrapping sleeves 71 sleeved on the wrapping covers 541 and a linkage pipe 72 arranged between the two groups of wrapping sleeves 71; a driving groove 5412 is formed in one surface, away from the adjusting cover 542, of the wrapping cover 541, the driving groove 5412 comprises two groups of symmetrically arranged straight portions and two groups of symmetrically arranged curved portions, two ends of the linkage pipe 72 are arranged in a matched mode with the driving groove 5412, and the linkage pipe 72 extends into the driving groove 5412 to achieve mutual linkage of the wrapping cover 541 and the linkage pipe 72; three groups of second step parts 711 matched with the second scales 522 are arranged in the wrapping sleeve 71, the second step parts 711 are positioned at one end, far away from the linkage pipe 72, of the wrapping sleeve 71, the adjusting distance of two adjacent groups of steps of each group of second step parts 711 is 0.06mm, second adjusting blocks 5413 matched with the second step parts 711 are arranged on the outer side wall of the wrapping cover 541, the cross sections of the second adjusting blocks 5413 are arranged in a triangular mode, and the second adjusting blocks 5413 abut against the second step parts 711, so that the second step parts 711 limit the movement of the second adjusting blocks 5413, and the wrapping cover 541 is limited to rotate; an extrusion spring 73 is arranged between the driving groove 5412 of the wrapping cover 541 and the linkage pipe 72, one end part of the extrusion spring 73 is respectively abutted against the pipe bottom of the linkage pipe 72, and the other end part is abutted against the groove bottom of the driving groove 5412; since the pressing spring 73 is in a compressed state, the pressing spring 73 always has a force pushing toward the bottom of the driving groove 5412, so that the pressing spring 73 always pushes the cover 541 toward the first regulation hole 521;

the protrusions 5422 are rotated, the adjusting covers 542 and the protrusions 5422 rotate synchronously, the adjusting covers 542 drive the wrapping covers 541 to rotate, so that the second adjusting blocks 5413 rotate on the second step parts 711, the wrapping covers 541 drive the linkage pipes 72 to rotate, the linkage pipes 72 drive the other wrapping cover 541 to rotate, and the two groups of wrapping covers 541 are adjusted simultaneously; since the extrusion spring 73 always pushes the wrapping cover 541 to the first adjusting hole 521, the adjustment of the magnetic member in the wrapping cover 541 is realized, so as to adjust the magnetic device in the prism block body 5;

a bearing frame 55 is arranged between the prism block shell 52 and the linkage pipe 72 and between the prism block shell and the wrapping sleeve 71, and the bearing frame 55 supports the linkage pipe 72 and the wrapping sleeve 71; the bottom of the bearing frame 55 is provided with an insertion shell 551, the prism block shell 52 is provided with an insertion frame 524 matched with the insertion shell 551, and the insertion shell 551 is arranged in the insertion frame 524. The bottom of the insertion frame 524 is provided with a clamping hole 525 matched with the fastening shaft 59, one end of the fastening shaft 59 is provided with a fastening block 592 fastened and fixed with the clamping hole 525, the fastening block 592 is fastened on the clamping hole 525 to realize the connection of the fastening shaft 59 and the prism block shell 52, so that the connection of the prism block clamping pin assembly 51 and the prism block shell 52 is realized. An elastic groove 593 is formed at one end of the buckling shaft 59, and the elastic groove 593 is positioned at one end of the buckling block 592 so that the buckling block 592 can be buckled into the clamping hole 525; the bottom of the insertion shell 551 is provided with a fixing rod 552 matched with the elastic groove 593, and the fixing rod 552 is inserted into the elastic groove 593 to limit the deformation of the elastic groove 593 so as to fix the connection between the buckle shaft 59 and the prism block shell 52. The prism housing 52 and the insertion housing 551 are provided with corresponding limiting holes 523, and the large clamping leg 58 is provided with a limiting rod 583 extending into the limiting holes 523 to limit the relative rotation of the large clamping leg 58 and the prism housing 52. The bottom of the prism housing 52 is provided with an inserting hole 526, the large clamping pin 58 is provided with an inserting block 584 inserted into the inserting hole 526, the inserting block 584 is inserted into the inserting hole 526, and the inserting block 584 is clamped in the inserting hole 526 so as to optimize the connection between the large clamping pin 58 and the prism housing 52;

the prism block casing 52 is provided with a plug cylinder 527, the prism block casing cover 53 is provided with a plug column 532 matched with the plug cylinder 527, and the plug column 532 is inserted into the plug cylinder 527 to cover the prism block casing 52 with the prism block casing cover 53. The prism housing cover 53 comprises two cover plates 531 and a splicing frame 533, the splicing column 532 is arranged on the cover plates 531, and the splicing frame 533 is spliced between the two cover plates 531 to limit the two cover plates 531 from being scattered; the bottom of the splicing frame 533 departing from the cover sheet 531 abuts against the wrapping sleeve 71, so that the wrapping sleeve 71 supports the splicing frame 533 to support the cover sheet 531. First oil groove 528 has been seted up to the lateral wall of arris piece casing 52, and first oil groove 528 is the pyramid shape setting to first oil groove 528 stores lubricating oil and clean dust.

Referring to fig. 6 and 7, the corner block body 4 includes a corner block clamping leg 41 movably clamped with the prism block body 5, a corner block housing 42 arranged on the corner block clamping leg 41, and a corner block housing cover 43 covering the corner block housing 42;

the both sides of the big bayonet catch 58 of arris piece body 5 are equipped with the spout, and in the spout was gone into to the big bayonet catch 58 slided each other with the angle piece bayonet catch 41 to realize rotating magic cube 1. The corner block clamping leg 41 is provided with an inserting buckle 412, the bottom of the corner block shell 42 is provided with an inserting groove 428 matched with the inserting buckle 412, the inserting groove 428 is communicated with the inside of the corner block shell 42, and the inserting buckle 412 is buckled into the inserting groove 428, so that the corner block clamping leg 41 is spliced with the corner block shell 42; the corner block clamping leg 41 is provided with a third oil storage groove 411, and the third oil storage groove 411 is arranged in a pyramid shape, so that the third oil storage groove 411 can store lubricating oil and clean dust conveniently;

be equipped with three magnetic module of group and arrange aggregate unit 8 between three magnetic module of group in between angle piece casing 42 and the angle piece cap 43, magnetic module includes magnetic shell 44 and the magnetic part of setting in magnetic shell 44, magnetic shell 44 contradicts with angle piece casing 42's inner wall, be favorable to magnetic part in magnetic shell 44 and the magnetic part interact in the arris piece body 5, thereby improve the accuracy of angle piece body 4 and the location of arris piece body 5 of magic cube 1, experience with magic cube 1 is played in the optimization. The lateral wall of the corner block shell 42 is provided with a second adjusting hole 421, and the magnetic shell 44 is arranged in the second adjusting hole 421, so as to further optimize the interaction between the magnetic part in the magnetic shell 44 and the magnetic part in the prism block body 5. The magnetic housing 44 includes a wrapping housing 45 and an adjusting housing 46 covering the wrapping housing 45, and the magnetic member is interposed between the wrapping housing 45 and the adjusting housing 46. The wrapping shell 45 is provided with a shell groove 451, the adjusting shell 46 is provided with a shell block 461 clamped in the shell groove 451, and the shell block 461 is clamped in the shell groove 451, so that the splicing of the adjusting shell 46 and the wrapping shell 45 is realized. The surface of the adjusting shell 46, which faces away from the wrapping shell 45, is provided with a convex shell 462, the convex shell 462 is arranged in a rectangular shape, the surface of the convex shell 462 is provided with three sets of third marks 463, and the outer wall of the corner block shell 42 is provided with third scales 422 corresponding to the third marks 463; the diameter of the adjusting shell 46 is larger than that of the second adjusting hole 421, and the diameter of the second adjusting hole 421 is larger than the diagonal line of the convex shell 462, so that the adjusting shell 46 fits the inner wall of the corner block shell 42, and the convex shell 462 is arranged in the second adjusting hole 421;

the linkage device 8 comprises three groups of wrapping cylinders 81 sleeved on the wrapping shell 45 and a gear mechanism 82 arranged between the three groups of wrapping cylinders 81; the inner wall of a parcel section of thick bamboo 81 is equipped with three sets of third ladder portions 811 corresponding with third scale 422, and third ladder portion 811 is located a parcel section of thick bamboo 81 and keeps away from the one end of gear mechanism 82, and the lateral wall of parcel shell 45 is equipped with the third regulating block 452 with third ladder portion 811 assorted, and third regulating block 452 contradicts with third ladder portion 811 to restriction parcel shell 45 is at a parcel section of thick bamboo 81 internal rotation. The adjusting distance of two adjacent steps of each group of third step portions 811 is 0.06mm, and the third adjusting blocks 452 are arranged in a triangular shape so as to rotate in the forward and reverse directions on the third step portions 811;

the gear mechanism 82 includes a shaft 821, three bevel gears 822 sleeved on the shaft 821 and a linkage gear 823 sleeved on the shaft 821, wherein the linkage gear 823 is engaged with the bevel gears 822. The shaft 821 comprises a tripod 8211 and a supporting rod 8212 fixed with the tripod 8211, the supporting rod 8212 is located in the middle of the tripod 8211, the linkage gear 823 is sleeved at the bottom of the supporting rod 8212, and the bevel gear 822 is sleeved at the tripod 8211. A linkage groove 453 is formed in one side, away from the adjusting shell 46, of the wrapping shell 45, one end of the bevel gear 822 is matched with the linkage groove 453, and one end of the bevel gear 822 extends into the linkage groove 453 to realize mutual linkage of the wrapping shell 45 and the bevel gear 822;

the convex shell 462 is rotated, the convex shell 462 and the adjusting shell 46 rotate synchronously, the adjusting shell 46 drives the wrapping shell 45 to rotate, the wrapping shell 45 rotates in the wrapping cylinder 81, the third adjusting block 452 of the wrapping shell 45 rotates on the third step portion 811, the wrapping shell 45 drives the bevel gear 822 to rotate, the bevel gear 822 drives the linkage gear 823 to rotate, the linkage gear 823 drives the other two groups of bevel gears 822 to rotate, and the like, so that the convex shell 462 is rotated simultaneously;

a return spring 83 is arranged in the wrapping barrel 81, the return spring 83 is positioned between the linkage groove 453 and the bevel gear 822, and the tripod 8211 is sleeved with the return spring 83; one end of the return spring 83 abuts against the bottom of the interlocking groove 453 and the other end abuts against the bevel gear 822. Reset spring 83 is in compression state between linkage groove 453 and bevel gear 822 for reset spring 83 will wrap up shell 45 and push away toward second regulation hole 421 direction, is favorable to wrapping up the magnetic part in the shell 45 and is close to arris piece body 5 more, makes the magnetic part in the parcel shell 45 and the magnetic part interact in the arris piece body 5. A squeezing groove 8221 is formed in the bevel gear 822, the tripod 8211 and the return spring 83 are sleeved in the squeezing groove 8221, and one end of the return spring 83 abuts against the bottom of the squeezing groove 8221;

a fixing frame 47 is arranged between the linkage device 8 and the corner block shell 42, and the wrapping cylinder 81 is arranged on the fixing frame 47. The bottom of mount 47 is equipped with fixed slot 471, is equipped with in the hornblock casing 42 with fixed slot 471 assorted fixed block 423, fixed block 423 is emboliaed to fixed slot 471, realizes that mount 47 fixes in hornblock casing 42. The surface of the fixing block 423 is provided with a supporting groove 424, the fixing frame 47 is provided with a supporting hole corresponding to the supporting groove 424, and the supporting rod 8212 penetrates through the protruding end of the supporting hole and is inserted into the supporting groove 424, so that the shaft 821 is arranged in the supporting groove 424, and the shaft 821 is fixed in the corner block shell 42;

the corner block shell cover 43 is provided with a fixed cylinder 431 matched with the supporting rod 8212, when the corner block shell cover 43 covers the corner block shell 42, the fixed cylinder 431 is sleeved on the supporting rod 8212, so that the fixed cylinder 431 is sleeved on the shaft rod 821; the corner block shell cover 43 comprises three splicing pieces 432 and a connecting frame 435 arranged between two adjacent splicing pieces 432, wherein one side of the connecting frame 435, which faces away from the splicing pieces 432, is abutted against the wrapping barrel 81; one surface of the splicing sheet 432 is provided with a clamping groove 433, and the corner block shell 42 is provided with a clamping block 427 matched with the clamping groove 433; the splice 432 has a splice 434 on one side and the corner block housing 42 has a mounting hole 425 that mates with the splice 434. The second oil storage groove 426 is formed in the outer side wall of the corner block shell 42, and the second oil storage groove 426 is arranged in a pyramid shape, so that lubricating oil and cleaning dust can be stored conveniently, and friction between the corner block shell 42 and the prism block shell 52 is reduced.

Referring to fig. 1 and 5, the adjustment tool 9 is arranged in a column shape, and one end of the adjustment tool 9 is provided with an adjustment groove 91 matched with the projection 621 of the positioning block 62, so that the projection 621 is adjusted by the adjustment groove 91 of the adjustment tool 9; the other end of the debugging tool 9 is provided with a debugging groove 92 matched with the convex shell 462 and the projection 5422, so that the convex shell 462 and the projection 5422 can be rotated by utilizing the debugging groove 92 of the debugging tool 9; the outer wall of the debugging tool 9 is provided with anti-slip lines 93, so that the phenomenon of slipping when the debugging tool 9 is applied is reduced.

The method for manually adding the lubricating oil into the magic cube 1 comprises the following steps: when the large clamping leg 58 of the prism block body 5 and the corner block clamping leg 41 of the corner block body 4 are dried and the friction force is increased, the magic cube 1 is in a non-moving state, and any whole layer of any surface of the magic cube 1 is pulled in the direction far away from the central shaft 2 of the magic cube 1, so that one central block body 3 moves in the direction far away from the central shaft 2; because the limiting shaft 213 limits the positioning block 62 to move in the direction away from the central shaft 2, the limiting shaft 213 presses the positioning block 62, the positioning block 62 presses the bearing ejector block 614, the bearing ejector block 614 presses the compression spring 612, the compression strength of the compression spring 612 is increased, and the buckle 6152 of the bearing ejector block 614 moves in the direction of the oil storage module 63, so that the buckle 6152 presses the backflow prevention film 631, the backflow prevention film 631 presses the oil storage film 632, the purpose of extruding the lubricating oil stored in the oil storage film 632 is achieved, and the lubricating oil flows into the gap between the backflow prevention film 633 and the bottom of the central block shell 31; lubricating oil is dripped between the large clamping pin 58 and the corner block clamping pin 41 from the oil outlet 313 at the bottom of the central block shell 31 to the third oil storage groove 411 of the corner block clamping pin 41, so that the third oil storage groove 411 stores the lubricating oil and the friction between the large clamping pin 58 and the corner block clamping pin 41 is reduced; and also to the outer side walls of the prism block housing 52 and the corner block housing 42 so that the first oil sump 528 and the second oil sump 426 store the lubricating oil.

The method for automatically adding the lubricating oil into the magic cube 1 comprises the following steps: when the magic cube 1 rotates to make positive and negative tolerance, the central block body 3 reciprocates back and forth along the length direction of the connecting shaft 21 of the central shaft 2 to trigger the limiting shaft 213 to extrude the positioning block 62, the positioning block 62 extrudes the bearing top block 614, the bearing top block 614 extrudes the compression spring 612, the compression strength of the compression spring 612 is increased, the buckle 6152 of the bearing top block 614 moves towards the oil storage module 63, so that the buckle 6152 extrudes the anti-backflow film 631, the anti-backflow film 631 extrudes the oil storage film 632, the purpose of extruding the lubricating oil stored in the oil storage film 632 is achieved, and the lubricating oil flows into a gap between the anti-backflow film 633 and the bottom of the central block shell 31; lubricating oil is dripped between the large clamping pin 58 and the corner block clamping pin 41 from the oil outlet 313 at the bottom of the central block shell 31 to the third oil storage groove 411 of the corner block clamping pin 41, so that the third oil storage groove 411 stores the lubricating oil and the friction between the large clamping pin 58 and the corner block clamping pin 41 is reduced; and also to the outer side walls of the prism block housing 52 and the corner block housing 42 so that the first oil sump 528 and the second oil sump 426 store the lubricating oil.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A central block structure of a magic cube (1), characterized in that: the center block comprises a center block body (3), wherein the center block body (3) comprises a center block shell (31) and a center block shell cover (32) covering the center block shell (31), tensioning mechanisms (6) are arranged in the center block shell (31) and the center block shell cover (32), and the center block body (3) is connected to a center shaft (2) through the tensioning mechanisms (6).

2. A central block structure of a puzzle cube (1) according to claim 1, wherein: the tail end of the central shaft (2) is provided with a limiting shaft (213), and the limiting shaft (213) is connected with the tensioning mechanism (6) in a clamping mode.

3. A central block structure of a puzzle cube (1) according to claim 2, wherein: tensioning mechanism (6) are including locating piece (62), locating piece (62) and spacing axle (213) joint.

4. A central block structure of a puzzle cube (1) according to claim 3, wherein: the locating block (62) is provided with a locating groove (622), and the limiting shaft (213) is arranged in the locating groove (622).

5. A central block structure of a puzzle cube (1) according to claim 3, wherein: the positioning block (62) is provided with a positioning hole (623) and a mounting hole (624) which are matched with the central shaft (2), the mounting hole (624) is respectively communicated with the positioning hole (623) and the positioning groove (622), and the positioning hole (623) is communicated with the positioning groove (622).

6. A central block structure of a puzzle cube (1) according to claim 5, wherein: the diameter of the mounting hole (624) is larger than that of the positioning hole (623), and the diameter of the mounting hole (624) is larger than that of the positioning groove (622).

7. A central block structure of a puzzle cube (1) according to claim 5, wherein: the diameter of the positioning groove (622) is larger than that of the positioning hole (623).

8. A central block structure of a puzzle cube (1) according to claim 1, wherein: the tensioning mechanism (6) comprises an elastic mechanism (61), the elastic mechanism (61) comprises a bearing mechanism (611) and a compression spring (612) located outside the bearing mechanism (611), and two ends of the compression spring (612) are abutted against the bearing mechanism (611).

9. A central block structure of a puzzle cube (1) according to claim 8, wherein: the bearing mechanism (611) is provided with a check ring (6131) and a limit ring (6141), and two ends of the compression spring (612) are respectively abutted against the check ring (6131) and the limit ring (6141).

10. A central block structure of a puzzle cube (1) according to claim 8, wherein: the bearing mechanism (611) comprises a bearing bottom block (613) and a bearing top block (614) clamped with the bearing bottom block (613), and a clamping mechanism (615) is arranged between the bearing bottom block (613) and the bearing top block (614).

11. A central block structure of a puzzle cube (1) in accordance with claim 10, wherein: the bearing bottom block (613) is provided with a check ring (6131), the bearing top block (614) is provided with a limit ring (6141), and two ends of the compression spring (612) are respectively abutted against the check ring (6131) and the limit ring (6141).

12. A central block structure of a puzzle cube (1) in accordance with claim 10, wherein: the clamping mechanism (615) comprises a buckling hole (6151) formed in the bearing bottom block (613) and a buckle (6152) formed in the bearing top block (614), and the buckle (6152) is buckled into the buckling hole (6151).

13. A central block structure of a puzzle cube (1) according to claim 1, wherein: an oil storage module (63) is arranged between the tensioning mechanism (6) and the central block shell (31).

14. A central block structure of a puzzle cube (1) according to claim 13, wherein: oil outlet (313) have been seted up to center block casing (31), oil outlet (313) are located the bottom of oil storage module (63).

15. A central block structure of a puzzle cube (1) according to claim 13, wherein: the tensioning mechanism (6) comprises a positioning block (62), the positioning block (62) is arranged on the bearing top block (614), the bearing top block (614) is provided with a first step portion (6144), the positioning block (62) is provided with a first adjusting block (626) matched with the first step portion (6144), and the first adjusting block (626) is abutted to the first step portion (6144).

16. A central block structure of a puzzle cube (1) according to claim 1, wherein: the inner wall of center block casing (31) is equipped with a plurality of card strips (311), center block cap (32) are equipped with a joint section of thick bamboo (321), the outer wall of a joint section of thick bamboo (321) is equipped with spacing groove (322) fixed with card strip (311) joint, card strip (311) are gone into in spacing groove (322).