Wide-angle magnetic mahjong tile rack and continuously variable-angle magnetic mahjong tile rack

Abstract

The present invention relates to the field of chess and cards, and in particular to a wide-viewing angle magnetic mahjong tile arrangement rack and a continuously variable-viewing angle magnetic mahjong tile arrangement rack. The wide-viewing angle magnetic mahjong tile arrangement rack comprises a holding frame and a magnetic attachment, the holding frame comprises two opposite side frames, and a pair or more than two pairs of plug-in positions including more than two card insertion positions are arranged on the side frames corresponding to the same magnetic attachment, and the magnetic attachment is inserted into different plug-in positions to change the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located; the continuously variable-viewing angle magnetic mahjong tile arrangement rack comprises a holding frame and a magnetic attachment, the holding frame comprises two opposite side frames, and the two side frames are provided with shaft holes, and the magnetic attachment is provided with a rotating shaft, and the magnetic attachment is inserted into the shaft hole through the rotating shaft to realize that the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located can be adjusted steplessly. Both of the above-mentioned two arrangement racks can be held by hand, thereby improving the comfort level of the user.

Description

Technical Field

[0001] The invention relates to the field of chess and cards, and in particular to a wide-viewing angle magnetic mahjong tile arrangement rack and a continuously variable-viewing angle magnetic mahjong tile arrangement rack. Background Art

[0002] Mahjong games occupy a considerable proportion in people's daily entertainment life, mainly because it is very interesting, suitable for all kinds of people to participate, and people have unanimous recognition of this type of game.

[0003] Although mahjong is very popular in society, playing mahjong usually requires a special venue and a large table or a special mahjong table. In addition, the usual mahjong tiles and mahjong tables are relatively heavy and occupy a large space, making them inconvenient to carry. This greatly limits the occasions for people to play mahjong. For example, when traveling on business or traveling, in order to kill boring time, people who like to play usually consider bringing a "good" mahjong deck. However, when considering that there is not enough space and tables for spreading mahjong tiles on trains or other travel occasions, even if they want to play, they often have to give up the idea of ​​bringing mahjong.

[0004] In the past two years, due to the limitations of small space, large size of old mahjong tiles, and heavy and inconvenient mahjong tables, it is difficult for people to play mahjong casually and comfortably when going out. In order to solve this long-standing problem, ultra-thin portable magnetic mahjong tiles that are easy to carry have appeared in the prior art. For example, a Chinese patent document with announcement number CN206896783U announced on January 19, 2018 records a chess and card, mahjong tiles, chess and mahjong tiles, and mahjong tiles. The mahjong tiles in the document include mahjong tiles and a power-assisting frame. The mahjong tiles are composed of at least one non-magnetic material and at least one magnetic material. The power-assisting frame includes at least one row of frames and a supporting structure. The frame is provided with permanent magnets. The permanent magnets on the frame The body can absorb mahjong tiles. The cooperation of the mahjong tiles and the power-assisting frame makes the mahjong tiles no longer rely on the size of their bottom area to stand firmly, so that the volume of the mahjong tiles can become infinitely small in theory, that is, the mahjong tiles can be designed to be very thin, and there will be no trouble that the mahjong tiles cannot stand due to the mahjong tiles being too thin. In this way, the problem that the old mahjong tiles are large and heavy and inconvenient to carry is solved. At the same time, the placement space is greatly reduced, so the requirements for entertainment conditions are relatively loose. Therefore, when playing mahjong outside, relatively speaking, a large space is not needed (for example, you can play mahjong on a small table by the window on the seat opposite to the train compartment), which can basically meet people's desire to play mahjong in a smaller space under certain circumstances.

[0005] Of course, although the above-mentioned mahjong set has solved the problems of large space occupied when playing mahjong outside and the difficulty of carrying mahjong cards and mahjong tables to a certain extent, considering that the power-assisting frame in this technology is supported on the desktop by its supporting structure and is in a standing position when in use, it is virtually destined to be limited to a local specific environment, and there must be a table suitable for placing it. In this case, people playing mahjong can only passively adapt to the position of the table and the situation of the power-assisting frame placed on the table; if you want to adjust the viewing angle of the human eye to the mahjong power-assisting frame, you can only adjust the pitch angle of the frame in situ by adjusting the adsorption connection position between the support structure of the power-assisting frame (in the prior art, the support structure is composed of a trapezoidal permanent magnet or other shaped permanent magnets) and the frame; in this process, we can imagine that The so-called adjustment of the pitch angle, in fact, cannot fundamentally achieve unified coordination among the user's limbs, eyes and the power-assist frame, because the power-assist frame is relatively fixed and can only be placed somewhere on the desk where it can be placed. If the user changes his posture for some reason (such as changing from sitting upright to leaning back, from sitting to half-lying, etc.), it may be inconvenient to see the mahjong tiles due to the change in posture, or conversely, it may be convenient for the eyes to see the mahjong tiles but the limbs may be uncomfortable, which leads to the contradictory situation of comfortable limbs but tired eyes and comfortable eyes and tired limbs. This kind of mahjong set restricts the user to passively determine the fixed posture of the human body according to the position of the power-assist frame, and maintaining the same posture for a long time will make the user feel tired, and want to change the posture but cannot, which will cause bad feelings and even affect the user's interest.

[0006] If the user picks up the auxiliary stand when changing posture, the above contradiction can be solved. However, because the original intention of designing this auxiliary stand is to require that it can stand steadily when standing on the desktop, the supporting structure configured to cooperate with the desktop is very inconvenient for the user to hold it by hand. If it is used by hand, it will inevitably be less comfortable. Because the supporting structure of the auxiliary stand and the frame body are connected together by magnetic attraction when they are used, they are an inseparable whole. The original idea of ​​designing the auxiliary stand was not to consider the use of hand holding. Otherwise, it does not seem to conform to the conventional playing method of placing mahjong tiles on the table when playing mahjong. Now it seems that if you insist on holding it with your hands, the problem of poor stability of the overall structure will be revealed. This is because the structural construction of the auxiliary stand is determined by the magnetic connection method. The two connecting interface planes are completely pressed together by magnetic attraction. Since the magnetic attraction is relatively small, the pressure between the two connecting interfaces (that is, the supporting permanent magnet and the longitudinal frame edge of the auxiliary stand) is relatively small. The interfaces are easily displaced and deformed due to the uneven and irregular direction of the hand's holding force. However, when the auxiliary stand is used to stand on a desktop, this problem generally does not exist because the desktop support force is relatively uniform and balanced. Summary of the invention

[0007] The purpose of the present invention is to provide a wide-viewing angle magnetic mahjong tile arrangement rack, which is mainly used to solve the problems existing in the prior art of the auxiliary rack for placing mahjong tiles, namely: breaking the convention of holding the mahjong tiles in the hand for use, conceiving a mahjong tile arrangement rack suitable for hand holding, and maximizing the advantages of the mahjong tile set when carrying the mahjong tile set outside and using it in specific occasions, so that the mahjong tiles on the arrangement rack, the user's eyes, and the user's limbs are all in the best coordinated state on the scene and can change and adapt to each other.

[0008] The purpose of the present invention is to provide a magnetic mahjong tile arrangement rack with a continuously variable viewing angle, which is mainly used to solve the problems existing in the prior art in the auxiliary rack for placing mahjong tiles, namely: breaking the convention of holding the mahjong tiles in the hand for use, conceiving a mahjong tile arrangement rack suitable for hand holding, and maximizing the advantages of the mahjong tile arrangement rack when carrying the tile set outside and using it in specific occasions, so that the mahjong tiles on the arrangement rack, the user's eyes, and the user's limbs are all in the best coordinated state on the scene and can change and adapt to each other.

[0009] To achieve the above purpose, the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention adopts the following technical solutions:

[0010] The wide-viewing angle magnetic mahjong tile arrangement rack comprises a strip-shaped magnetic attachment extending laterally, at least a part of the magnetic attachment is made of permanent magnetic material, and an adsorption surface for adsorbing two or more mahjong tiles containing soft magnetic material in the length direction is formed on one side thereof, there are more than two magnetic attachments and they are arranged at intervals in the longitudinal direction, there are two magnetic attachments, at least one of the two magnetic attachments is provided with a tunnel hole entering from one point and passing through another point on the middle area of ​​the back side of the adsorption surface of the magnetic attachment, wherein a finger rope connected end to end is passed through the tunnel hole, and the rope length is at least enough to rotate around the index finger or the middle finger for one circle, and the wide-viewing angle magnetic mahjong tile arrangement rack also comprises a grip for a person to hold by hand The holding frame includes two side frames arranged opposite to each other in the horizontal direction; the two end columns of the same magnetic attachment on the two side frames are respectively provided with a plug-in position including more than two plug-in positions and capable of plugging into the two ends of the magnetic attachment, so that after the magnetic attachment changes its plug-in position, the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located changes; or the two ends of the same magnetic attachment are respectively provided with two or more pairs of plug-in positions including more than two plug-in positions and capable of plugging into the two ends of the magnetic attachment on the two side frames, so that when the magnetic attachment changes its plug-in position or is plugged into different plug-in positions, the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located changes.

[0011] The wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention has the following beneficial effects:

[0012] When the arrangement rack is used, the conventional playing method of arranging mahjong tiles horizontally on the table is changed. The arrangement rack does not need to rely on the support structure to be supported on the table or other planes similar to the table, but a special holding frame is provided for the user to hold and grasp. This new concept has achieved unexpected results compared with the existing technology. This is reflected in that when the user needs to change any posture (which may have to be changed due to the constraints of on-site conditions), the arrangement rack can be adjusted with the human body posture and held in front of the user and maintained at a better and comfortable viewing angle (the better viewing angle is explained as: the arrangement rack should reflect the good or bad with the best viewing angle of each attached surface of the overall arrangement rack facing the human eye, rather than simply The user can look at the mahjong tiles by holding the holding frame of the arrangement rack when lying on his side and making the length direction of the magnetic attachment of the arrangement rack follow and keep it parallel to the direction of the line connecting the two eyes (the arrangement rack is not necessarily horizontal at this time), and make the magnetic attachment of the arrangement rack close to the two eyes and choose a good lighting surface. If the position of the arrangement rack is high due to the limitation of body position, and the adsorption surfaces of several rows of magnetic attachments overlap in front of the eyes and block each other's sight (this state may be suitable for the arrangement rack to be at a lower distance from the eyes), then change the angle of the frame surface of the arrangement rack relative to the human eyes by hand, and then adjust Each magnetic attachment surface only needs to be within the viewing angle range of the human eye, so that the user will not have to give up changing posture because he cannot see the mahjong tiles clearly when he wants to change to a comfortable posture. It is very convenient to use and can maximize the user's comfort experience. In addition, if there are more than two magnetic attachments on the arrangement rack, all mahjong tiles can be divided into more than two rows and placed, avoiding the situation where the user likes to hold the arrangement rack with one hand and the mahjong tiles are placed too long, causing fatigue of the hand holding the arrangement rack. The use of the arrangement rack completely gets rid of the limiting factor that playing mahjong must rely on a relatively large mahjong table, and only a smaller space is needed for entertainment, such as There is a tabletop similar to the size of a small square stool, or on a suitcase, which does not require much space for entertainment, thereby greatly increasing the possibility of people playing mahjong for entertainment on the way out, during a short stay during travel or in other leisure occasions, and increasing people's enthusiasm for carrying mahjong cards when going out, making it possible to play mahjong, a folk entertainment activity that Chinese people love to play, just like playing poker, anytime and anywhere. In addition, the two ends of the two side frames corresponding to the same magnetic attachment are respectively provided with a pair or more pairs of plug-in positions containing more than two card insertion positions, so that the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located can be appropriately adjusted as needed during entertainment.

[0013] The finger rope is set up for the situation that the arranging rack has two rows and its horizontal length is long. If you always use your hands to hold the arranging rack, your hands will easily get tired. At this time, you can use the finger rope to hold the arranging rack. In fact, it is a very comfortable holding method. This method overcomes the situation that when the arranging rack has only two rows, the entire arranging rack is relatively long horizontally, and the hands are prone to fatigue when holding the arranging rack. In addition, people with small hands may prefer the finger rope as the holding method.

[0014] Furthermore, the side frame includes a main frame arm extending in the longitudinal direction and an auxiliary connector detachably connected to the main frame arm, both ends of each magnetic attachment body are plug-connected to the auxiliary connector along its length, and the auxiliary connector is plug-connected to the main frame arm on the side frame, wherein each corresponding magnetic attachment body and the corresponding auxiliary connector and the main frame arm are grouped and coaxial when forming an arrangement frame. The side frame is configured in the form of a main frame arm with auxiliary connectors, and magnetic attachment bodies with different plug-in structure can be installed on the side frame by matching different auxiliary connectors with a main frame arm, thereby improving the versatility of the side frame; in addition, this arrangement frame structure with auxiliary connectors can quickly change the viewing angle without having to frequently disassemble the entire arrangement frame structure.

[0015] Furthermore, the side frame is an integral structure with its length extending in the longitudinal direction, and both ends of each magnetic attachment can be directly plugged and connected with the corresponding plug-in positions on the two side frames at the same time. The side frame is set as an integral structure to reduce the difficulty of processing and thus reduce the cost.

[0016] Furthermore, on the sides of the two side frames facing or away from the human face, corresponding to one end of each magnetic attachment, a plurality of transverse through slots with different orientations are provided, and on the sides of each end of the corresponding two ends of the same magnetic attachment, a pair of through grooves with two notches facing each other and perpendicular to the length direction of the magnetic attachment are symmetrically provided, and the bottom surfaces of the pair of through grooves are parallel to each other, and the middle tongue part defined by the bottom surfaces of the two through grooves can be respectively adapted and inserted into the multiple through slots provided on the corresponding side frames; or, on the sides of the two side frames facing or away from the human face, corresponding to one end of each magnetic attachment, a plurality of transverse through slots with different orientations are provided, and on the sides of the two ends of the corresponding magnetic attachment, a through opening groove perpendicular to its length direction is provided, and the two through opening grooves on both sides of the magnetic attachment can be respectively adapted and inserted into the multiple through slots provided on the corresponding side frames; in the above, each plug-in position on the side frame is a through slot on the side frame. These two plug-in methods have simple structures, stable frames, and convenient processing.

[0017] Furthermore, at least one pair of identical regular polygonal plug-in holes or regular star-shaped polygonal plug-in holes with the same central axis are provided on the opposite sides of the two side frames corresponding to the two ends of each magnetic attachment in the length direction, and the two ends of the magnetic attachment are provided with convex columns extending along the length direction of the magnetic attachment that are adapted to the regular polygonal plug-in holes or regular star-shaped polygonal plug-in holes. The magnetic attachment is inserted on the side frame with an adjustable viewing angle of the adsorption surface through the cooperation of the convex columns and the regular polygonal plug-in holes or regular star-shaped polygonal plug-in holes, wherein each plug-in position on the side frame is a regular polygonal plug-in hole or a regular star-shaped polygonal plug-in hole. This plug-in form has a simple structure, convenient processing, and a stable frame.

[0018] Furthermore, on the opposite sides of the two side frames, corresponding to the two ends in the length direction of each magnetic attachment, there are respectively provided with a plurality of groups of corresponding holes of the same shape and size distributed on the circumference of the same circle, the center line of each group of holes passes through the center of the circle, and the two circles on the two side frames are symmetrical about the perpendicular bisector of the line connecting the centers of the two circles, the angles between the center lines of each group of holes and the length extension direction of the side frame are different, and the two ends in the length direction of the magnetic attachment are respectively provided with two protrusions extending along the length direction of the magnetic attachment that are adapted to the hole shape, hole spacing and hole size of the holes on the circle, so that the magnetic attachment can be inserted into different groups of holes through the protrusions on it to realize the insertion on the side frame with adjustable viewing angle of its adsorption surface, wherein the length direction of the magnetic attachment is parallel to the central axis of the two circles; each plug-in position on the side frame is each group of holes on the side frame. The above provides a plug-in form with a simple structure, and the setting of the holes and two protrusions can also prevent the magnetic attachment from rotating relative to the side frame, thereby improving the stability of the arrangement frame.

[0019] Furthermore, a connector socket for inserting an auxiliary connector is provided at one end of the main frame arm corresponding to each magnetic attachment, and the connector socket includes a circular socket close to the magnetic attachment and a regular polygon socket or a regular star-shaped polygon socket away from the magnetic attachment, the circular socket is coaxially connected with the regular polygon socket or the regular star-shaped polygon socket, and the diameter of the circular socket is smaller than the diameter of the corresponding inscribed circle of the regular polygon socket or the regular star-shaped polygon socket; the auxiliary connector is inserted into the connector socket from the outside of the arrangement frame to the inside, wherein the auxiliary connector part inserted in the connector socket is adapted to the spatial shape and size of the connector socket and is coaxial, The part of the auxiliary connector that is close to the magnetic attachment and located outside the circular socket constitutes a clamping part of the magnetic auxiliary attachment. The clamping part is coaxial with the auxiliary connector part that is inserted into the connector socket, and its structure is as follows: a pair of convex columns with an arched cross-section extend toward the magnetic attachment from the end surface of the part of the auxiliary connector corresponding to the circular socket that is close to the magnetic attachment, and the two convex columns are symmetrical about the axis of the circular socket or the plane corresponding to the axis of the part of the auxiliary connector corresponding to the circular socket, the arcuate surfaces of the two convex columns are equivalently inscribed on the inner surface of the circular socket, and the diameter of the corresponding circle where the two arcuate surfaces are located is slightly smaller than the hole diameter of the circular socket. A clamping groove is formed between two opposite planes between the two protrusions; two holes matching the two protrusions of the clamping part can be respectively provided on the two end surfaces of the magnetic attachment along the length direction, so that the corresponding two protrusions on the two auxiliary connecting parts at the two ends of the magnetic attachment can be inserted into the two holes at the same time, or symmetrical grooves can be simultaneously provided on the two side surfaces opposite to each other at the two ends of the magnetic attachment, and the protrusions can be inserted or pulled out of the clamping part in the opposite direction along the length direction, and the bottom of the two symmetrical grooves is used as the boundary to form a tongue part in the middle of the boundary, and the tongue part can be just inserted into the groove of the clamping part; the magnetic attachment is inserted into the clamping part. The two protrusions of the clamping part are inserted into the groove or sleeved, and the clamping part is pulled out from the magnetic attachment by pulling out the main frame arms of the two side frames, and then the auxiliary connector is withdrawn from the connector socket and reinserted into the connector socket after rotating the angle, and then the magnetic attachment is plugged and assembled with the clamping part to realize the insertion of the magnetic attachment on the side frame with adjustable adsorption angle; wherein, the two pairs of grooves at both ends of the magnetic attachment or the two pairs of holes at both end surfaces are symmetrical to the central axis of the long direction of the magnetic attachment, and the axis is coaxial with the two connector sockets on the main frame arm when forming the arrangement frame; in addition, each plug-in position on the side frame is a connector socket for the auxiliary connector. This plug-in method is easy to disassemble and assemble.

[0020] Furthermore, the length extension direction of the magnetic attachment is perpendicular to the longitudinal extension direction of the side frame. This arrangement allows the mahjong tiles to face the user's line of sight, which is in line with the conventional card placement habits of most users.

[0021] Furthermore, the two side frames are separate independent structures, which is convenient for the disassembly and packaging of the side frames and the magnetic attachment.

[0022] Furthermore, the side frame is a strip-shaped sheet structure, and the portion of the magnetic attachment body provided with the attachment surface is defined as the magnetic attachment body attachment surface segment, and the cross-sectional shape of the magnetic attachment body attachment surface segment taken along the direction perpendicular to its length is a flat arch or a rectangle. The magnetic attachment body with a flat arch cross-section has a beautiful appearance, and the magnetic attachment body with a rectangular cross-section has a simple structure and is easy to process.

[0023] Furthermore, the magnetic attachment is made of injection moldable composite permanent magnetic material, or directly made of polymer composite permanent magnetic material. Composite permanent magnetic material and polymer composite permanent magnetic material have low cost, good injection molding consistency and high efficiency, and composite permanent magnetic material or polymer composite permanent magnetic material with appropriate magnetic induction intensity can be selected according to demand.

[0024] Furthermore, the two side frames are strip-shaped sheet structures with wide faces facing each other and parallel in the longitudinal direction, and the opposite sides of the two side frames are used for users to hold. The strip-shaped sheet-shaped side frames can reduce the size of the entire arrangement frame and save the packaging space occupied by the arrangement frame.

[0025] Furthermore, the side frame is a straight structure or a curved structure. The side frame is set to a curved structure to make the entire arrangement frame look more beautiful. In addition, the curved direction of the side frame can be designed to make the fingers more comfortable when the user holds it with his hands, such as the curved direction of one side frame is adapted to the thumb, and the curved direction of the other side frame is adapted to the other four fingers. Of course, the two side frames can also be set to a straight structure, and the side frames with a straight structure are convenient for packaging. Of course, if a curved structure is adopted, it is best that the outer sides of the two side frames are curved and the inner sides are straight, so that it is easy to construct the plug-in structure.

[0026] Furthermore, the contact surface between the magnetic attachment and the side frame after being plugged in is defined as the plugging surface, and the plugging surface is coated with elastic wear-resistant material to make the plugging surface more wear-resistant and the plugging of the side frame and the magnetic attachment tighter.

[0027] Furthermore, the contact surface after the auxiliary connector and the main frame arm are plugged in, and the contact surface after the magnetic attachment and the auxiliary connector are plugged in are defined as the plugging surface, and the plugging surface is coated with elastic wear-resistant material to make the plugging surface more wear-resistant and make the plugging of the magnetic attachment and the auxiliary connector, and the plugging of the auxiliary connector and the main frame arm tighter. The elastic wear-resistant material is wear-resistant rubber, such as: polyurethane rubber, butadiene rubber, natural rubber and other polymer chemical materials, and commonly used silicone rubber materials, etc., and wear-resistant polyurethane elastic rubber is the preferred wear-resistant elastic material.

[0028] The continuously variable viewing angle magnetic mahjong tile arrangement rack provided by the present invention adopts the following technical solutions:

[0029] The continuously variable viewing angle magnetic mahjong tile arrangement rack comprises a horizontally extending strip-shaped magnetic attachment, at least part of which is a permanent magnetic material, and an adsorption surface for adsorbing two or more mahjong tiles containing soft magnetic materials in the length direction is formed on one side thereof, there are more than two magnetic attachments and they are arranged at intervals in the longitudinal direction, at least a middle area on the back of one magnetic attachment is provided with a tunnel hole entering from one point on the back of the area and passing through another adjacent point, wherein a finger rope connected end to end is passed through the hole, and the rope length is at least enough to rotate around the index finger or the middle finger for one circle, and the continuously variable viewing angle magnetic mahjong tile arrangement rack also comprises a for a person to hold by hand The holding frame includes two side frames arranged opposite to each other in the transverse direction. A rotating shaft extending outward along the length direction of the same magnetic attachment is respectively arranged at both ends. The rotating shafts at both ends of the magnetic attachment are coaxially arranged. On the two side frames, a pair of coaxial shaft holes are correspondingly arranged for the rotating shafts to rotate accordingly therein. Each magnetic attachment and the two side frames are assembled through the rotating shaft and the shaft hole so that the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located can be adjusted steplessly. The continuously variable viewing angle magnetic mahjong tile arrangement frame also includes a locking structure that keeps the adsorption surface of the magnetic attachment and the plane where the two side frames are located in a certain angle state.

[0030] The beneficial effects of the magnetic mahjong tile arrangement rack with continuously variable viewing angle provided by the present invention are:

[0031] When the arrangement rack is used, the conventional playing method of arranging mahjong tiles horizontally on the table is changed. The mahjong tiles do not need to be supported on the table or other flat surfaces by the supporting structure, but a special holding frame is provided for the user to hold and grasp. This new concept has achieved unexpected results compared with the prior art, which is reflected in that when the user needs to change any posture (which may have to be changed due to the constraints of on-site conditions), the arrangement rack can be raised in front of the user according to the human body posture and maintained at a better and comfortable viewing angle (the better viewing angle is explained as: the arrangement rack should reflect the best viewing angle of each attachment surface of the overall arrangement rack facing the human eye, rather than simply understanding that a certain attachment surface faces the best viewing angle of the human eye and the other attachment surfaces face the best viewing angle of the human eye). He is not) looking at the mahjong tiles. If the user lies on his side, he can hold the handle of the arrangement rack and make the length direction of the magnetic attachment of the arrangement rack follow and maintain parallel to the direction of the line connecting the two eyes, and make the magnetic attachment of the arrangement rack close to the two eyes and choose a good lighting surface. If the position of the arrangement rack is relatively high due to the limitation of body position, and the adsorption surfaces of several rows of magnetic attachments overlap in front of the eyes and block each other's sight (this state may be suitable for when the arrangement rack is at a lower distance from the eyes), at this time, the overall viewing angle of the frame surface of the arrangement rack relative to the human eye can be changed manually, and at the same time, the viewing angle of each upper and lower magnetic attachment relative to the human eye can be adjusted and staggered, so that the user will not want to change to a comfortable one. The user can easily change the mahjong position because the mahjong tiles are not clearly visible. The arrangement rack is very convenient to use and can maximize the user's comfort experience. In addition, the arrangement rack has more than two magnetic attachments, so all mahjong tiles can be arranged in more than two rows, avoiding the situation that the user likes to hold the arrangement rack with one hand and the mahjong tiles are placed too long, which causes fatigue of the hand holding the arrangement rack. The use of the arrangement rack completely gets rid of the limitation that playing mahjong must rely on a relatively large mahjong table, and only a smaller space is needed for entertainment, such as a table top similar to the size of a small square stool (the table top is only used to stack the mahjong tiles that have not been uncovered and to lay out the mahjong tiles that have been played), or on In the suitcase, a lot of space is not needed for entertainment, which greatly increases the possibility of people playing mahjong for entertainment on the way out, during travel or other leisure occasions, and increases people's enthusiasm for carrying mahjong cards when going out, making it possible to play mahjong, a popular folk entertainment activity among Chinese people, anytime and anywhere, just like playing poker. In addition, each magnetic attachment and the two side frames are assembled by rotating the rotating shaft and the shaft hole, so that the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located can be continuously and steplessly adjusted at any time during the mahjong playing process, so that entertainment is more comfortable and relaxed. In addition, the present scheme is also provided with a locking structure to keep the adsorption surface of the magnetic attachment and the plane where the two side frames are located at a certain angle.

[0032] Setting up a finger loop can provide an alternative holding method when the user feels tired after holding the grip frame for a long time. The loop is for the index finger or middle finger to be inserted, and the thumb is used as the opponent finger to be clamped on the edge of the corresponding side frame, thereby reducing hand fatigue. However, the finger loop is also another holding method, and people with small hands may even directly choose this holding method.

[0033] Furthermore, the side frame is an integral structure extending in the longitudinal direction, and the rotating shafts at both ends of each magnetic attachment are directly inserted into the corresponding shaft holes of the side frame, and the friction between the outer wall of the rotating shaft and the inner wall of the shaft hole is sliding friction. The side frame is set as an integral structure to reduce the difficulty of processing, thereby reducing costs; the friction force of sliding friction is greater than the friction force of rolling friction, and when the friction force between the rotating shaft and the shaft hole is greater, the two can be prevented from rotating freely. Of course, the force cannot be too large, otherwise it is inconvenient to operate to rotate the magnetic attachment to the required position.

[0034] Furthermore, the rotating shafts at both ends of each magnetic attachment are respectively sealed in the end parts of the two ends and are metal shafts with good rigidity; the locking structure: either an elastic wear-resistant layer coated on the outer wall of the rotating shaft and / or the inner wall of the shaft hole, and the rotation of the magnetic attachment relative to the side frame is limited by the damping friction of the elastic wear-resistant material; or an elastic wear-resistant layer is coated on the inner wall of the shaft hole of the side frame, and the outer wall surface of the rotating shaft is processed with knurling or roughening, and the rotation of the magnetic attachment relative to the side frame is limited by the damping friction generated by the elastic wear-resistant material and the knurled shaft with convex and concave surfaces or the rough rough shaft with soft and hard materials. In this way, it is possible to avoid setting up other additional locking structures. The structure is reasonable, the processing is relatively simple, and it is durable. The elastic wear-resistant materials include: wear-resistant rubber, such as: polyurethane rubber, butadiene rubber, natural rubber and other polymer chemical materials, and commonly used silicone rubber materials, etc. Wear-resistant polyurethane elastic rubber is the preferred wear-resistant elastic material; and the metal shaft with better rigidity can be made of stainless steel alloy with good toughness or other spring steel materials with better rigidity. Because it is a metal material, it can be made relatively thin, and it is also strong and solid.

[0035] Furthermore, the two side frames are either split structures or integral frames with a horizontal connecting rod in the middle, and the entire continuously variable viewing angle magnetic mahjong tile arrangement frame composed of the magnetic attachment and the side frames is a rectangular frame with the horizontal direction being the length direction, the vertical direction being the width direction, and the front and back directions being the thickness direction. The continuously variable viewing angle magnetic mahjong tile arrangement frame is formed into a rectangular frame with the horizontal direction being the length direction, the vertical direction being the width direction, and the front and back directions being the thickness direction, which is convenient for users to hold and more beautiful, especially when the thickness is thinner (matching a thin rotating shaft), such as a frame thickness of about one millimeter, so that when the arrangement frame is folded into a box, the packaging volume occupied by the arrangement frame is very small, so that the entire set of cards can be packaged very small, and may even be not much larger or equivalent to the volume of a deck of playing cards.

[0036] Furthermore, in the horizontal direction of the two side frames of the continuously variable viewing angle magnetic mahjong tile arrangement frame, any longitudinal dividing axis in the middle region is taken, and the outer parts of the two side frames bounded by the longitudinal dividing axis are folded toward each other around the longitudinal dividing axis, so as to fold out a folding edge that is 90 degrees or about 90 degrees with the unfolded part, and the folding edge and the unfolded part are hinged together by a hinge-type hinge. In order to make the angle between the folding edge and the unfolded part relatively stable and not loose and shaken, the inner walls of the two half hinge shaft holes of the hinged part should also be coated with elastic wear-resistant materials, and the outer wall surface of the metal pin shaft passing through the docking hole extending from them should also be processed with uneven knurling, and the so-called knurling is like the outer peripheral surface of the thimble used for shoe soles with uneven small pits. After the side frame is folded, the grip surface becomes wider toward the palm, which is convenient for the user to hold and more comfortable to hold. In addition, the folded edge and the unfolded part are hinged by a hinge-type hinge, which is convenient to process and has a simple structure. It is easy to fold into a flat sheet when not in use.

[0037] Furthermore, the length extension direction of the magnetic attachment is perpendicular to the longitudinal extension direction of the side frame. This arrangement allows the mahjong tiles to face the user's line of sight, which is in line with the conventional card placement habits of most users.

[0038] Furthermore, the part of the magnetic attachment body provided with the attachment surface is defined as the magnetic attachment body attachment surface section, and the cross-sectional shape of the magnetic attachment body attachment surface section taken perpendicular to its length direction is flat arch or rectangular; and the magnetic attachment body is made by injection molding of a composite permanent magnetic material that can be injection molded, or directly made of a polymer composite permanent magnetic material. The magnetic attachment body with a flat arch cross-section of the magnetic attachment body attachment surface section has a beautiful appearance, and the magnetic attachment body with a rectangular cross-section has a simple structure and is easy to process; the cost of composite permanent magnetic materials and polymer composite permanent magnetic materials is low, and composite permanent magnetic materials or polymer composite permanent magnetic materials with appropriate magnetic induction strength can be selected according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a state diagram of the magnetic attachment body and the side frame after installation of the embodiment 1 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention (including mahjong tiles);

[0040] Figure 2 It is a left view of the magnetic attachment and the side frame of the embodiment 1 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention after installation (without mahjong tiles);

[0041] Figure 3 It is a front view of the side frame of the embodiment 1 of the wide-viewing angle magnetic mahjong tile arrangement frame provided by the present invention;

[0042] Figure 4It is a right side view of the side frame of the embodiment 1 of the wide-viewing angle magnetic mahjong tile arrangement frame provided by the present invention;

[0043] Figure 5 It is a front view of the magnetic attachment body of Example 1 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0044] Figure 6 It is a left side view of the magnetic attachment body of Example 1 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0045] Figure 7 It is a front view of the magnetic attachment body of Example 2 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0046] Figure 8 It is a top view of the magnetic attachment body of Example 2 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0047] Fig. 9 It is a schematic structural diagram of the side frame of the third embodiment of the wide-viewing angle magnetic mahjong tile arrangement frame provided by the present invention;

[0048] Fig.10 It is a front view of the magnetic attachment body of Example 3 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0049] Fig.11 It is a left side view of the magnetic attachment body of Example 3 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0050] Fig.12 It is a schematic structural diagram of a side frame of a fourth embodiment of a wide-viewing angle magnetic mahjong tile arrangement frame provided by the present invention;

[0051] Fig.13 It is a front view of the magnetic attachment body of the fourth embodiment of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0052] Fig.14 It is a left side view of the magnetic attachment body of Example 4 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0053] Fig.15 It is a top view of the magnetic attachment body of Example 4 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0054] Fig.16 It is a structural schematic diagram of the magnetic attachment body of Example 5 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0055] Fig.17 It is a structural schematic diagram of the main frame arm of Example 6 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0056] Fig.18 It is a left view of the main frame arm of Example 6 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0057] Fig.19 It is a right side view of the main frame arm of Example 6 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0058] Fig. 20 It is a front view of the auxiliary connecting member of the embodiment 6 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0059] Fig.21 It is a top view of the auxiliary connecting member of the embodiment 6 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0060] Fig. 22 It is a three-dimensional diagram of the auxiliary connecting member of the sixth embodiment of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0061] Fig.23 It is a structural schematic diagram of a magnetic attachment body of Example 6 of a wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention;

[0062] Fig.24 It is a schematic structural diagram of the embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle provided by the present invention after the side frame and the magnetic attachment are installed;

[0063] Fig.25 Schematic diagram of the structure of the hinge of the embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle provided by the present invention

[0064] In the accompanying drawings: 1-side frame, 2-magnetic attachment, 3-mahjong tiles, 4-magnetic attachment, 5-magnetic attachment, 6-side frame, 7-magnetic attachment, 8-side frame, 9-magnetic attachment, 10-finger rope, 101-main frame arm, 102-auxiliary connecting piece, 103-magnetic attachment, 104-magnetic attachment, 105-side frame, 106-tunnel hole, 107-finger rope, 108-rotating axis, 109-convex column, 11-first side frame slot, 12-second side frame slot, 13- The third side frame slot, 21-magnetic attachment slot, 41-tunnel hole, 51-groove, 61-socket, 71-boss, 81-first socket, 82-second socket, 83-third socket, 91-boss, 1011-circular socket, 1012-square socket, 1021-square end, 1022-cylindrical transition section, 1023-clamping part, 1031-hole, 1051-folding part, 1052-fixing part, 10231-slot, 10521-axis hole. DETAILED DESCRIPTION

[0065] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0066] Embodiment 1 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention:

[0067] like Figure 1 and Figure 2 As shown, the wide-viewing angle magnetic mahjong tile arrangement frame includes two independently arranged side frames 1, and the two side frames 1 together constitute a holding frame. The two side frames 1 are arranged in parallel and extend in the longitudinal direction. Three identical magnetic attachments 2 extending in the transverse direction are simultaneously inserted on the side frames 1. The three magnetic attachments 2 are arranged at intervals in the longitudinal direction. The magnetic attachments 2 are used to absorb mahjong tiles 3 containing soft magnetic materials. The length directions of the three magnetic attachments 2 are perpendicular to the length directions of the side frames 1 to adapt to the card arrangement habits of most users.

[0068] like Figure 3 and Figure 4 As shown, the side frame 1 is a flat strip-shaped sheet, that is, the side frame 1 is a linear structure. Three slots are provided on one side of the length direction of the side frame 1 corresponding to each magnetic attachment, namely the first side frame slot 11, the second side frame slot 12 and the third side frame slot 13. The three slots are at a fixed angle to the length direction of the side frame 1, and the angle can be set according to different needs. When using the arrangement frame, the user can insert the magnetic attachment 2 into different slots according to his own habits, which is more flexible to use. All the slots are through slots provided on the side frame 1. Three slots are provided on the side frame 1 corresponding to the same magnetic attachment 2. These three slots enable the magnetic attachment 2 to have different insertion orientations. The three slots corresponding to the same magnetic attachment 2 on each side frame 1 are defined as a group of slots, and the two slots corresponding to the same magnetic attachment 2 on the two side frames 1 constitute a pair of plug-in positions. In the present embodiment 1 Figure 1 and Figure 2 In the figure, the magnetic attachment body 2 is inserted into the second side frame slot 12, which is only for illustration. The magnetic attachment body 2 can also be inserted into the first side frame slot 11 or the third side frame slot 13.

[0069] like Figure 5 and Figure 6As shown, the magnetic attachment 2 is a flat strip-shaped plate structure. The magnetic attachment 2 is made of a combination of magnetic plastic and magnetic rubber. The magnetic rubber is attached to the magnetic plastic to form a smooth plane. The smooth plane constitutes an adsorption surface for adsorbing mahjong tiles 3. The part of the magnetic attachment provided with an attachment surface is defined as a magnetic attachment surface segment. The cross-sectional shape of the magnetic attachment surface segment cut by a surface perpendicular to its length direction is a rectangle; two magnetic attachment slots 21 are provided on one side of the length direction of the magnetic attachment 2. The magnetic attachment slots 21 are used to be inserted into the second side frame slot 12 on the side frame 1. The cooperation between the magnetic attachment slots 21 and the second side frame slots 12 ensures that after the magnetic attachment 2 is inserted, the magnetic attachment 2 and the side frame 1 cannot move relative to each other along the length direction of the magnetic attachment 2 and the length direction of the side frame 1, thereby improving the overall stability of the arrangement frame; the magnetic attachment slots 21 constitute a through opening slot on the magnetic attachment 2.

[0070] The magnetic attachment 2 is inserted into different slots, so that the angle of the adsorption surface of the magnetic attachment 2 relative to the plane where the two side frames 1 are located can be changed. The plane where the two side frames 1 are located refers to a plane passing through the two side frames 1 at the same time.

[0071] The contact surface between the side frame 1 and the magnetic attachment 2 after being plugged in is defined as the plugging surface, and a layer of natural rubber is coated on the plugging surface to make the plugging surface more wear-resistant and make the plugging of the side frame 1 and the magnetic attachment 2 tighter; natural rubber constitutes an elastic wear-resistant material.

[0072] The side frame 1 and the magnetic attachment 2 are unpacked when not in use. When needed, the three magnetic attachments 2 are inserted into appropriate slots of the side frame for use.

[0073] Embodiment 2 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention:

[0074] The difference from Example 1 is that Figure 7 and Figure 8 As shown, two opposite grooves 51 are provided at the two ends of the magnetic attachment body 5 (corresponding to the magnetic attachment body 2 in Example 1), the groove bottoms of the two grooves 51 are two parallel planes, the groove bottoms penetrate the magnetic attachment body 5 along the extension direction thereof, the extension direction of the two grooves 51 is perpendicular to the length direction of the magnetic attachment body 5, the two groove bottoms and the magnetic attachment body 5 between the two groove bottoms constitute a tongue structure, the tongue structure on the magnetic attachment body 5 is adapted to the corresponding slot on the side frame 1, and the magnetic attachment body 5 and the side frame 1 are plugged in and matched by inserting the tongue structure into the slot; the grooves 51 constitute a through groove on the magnetic attachment body 5.

[0075] Embodiment 3 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention:

[0076] The difference from Example 1 is that Figure 9-11 As shown, a socket 61 penetrating the side frame 6 is provided on each end portion of the side frame 6 (corresponding to the side frame 1 in Example 1) corresponding to each magnetic attachment 7 (corresponding to the magnetic attachment 2 in Example 1), and the socket 61 is in the shape of a regular hexagon. The corresponding sockets 61 on the two side frames 6 share the same central axis, and corresponding bosses 71 are provided on the ends of the magnetic attachments 7. The shape of the bosses 71 matches the socket 61. The magnetic attachments 7 and the side frame 6 are plug-in matched through the bosses 71 and the socket 61, and the magnetic attachments 7 are plug-in mounted on the side frame 6 with an adjustable angle. The two sockets 61 on the two side frames 6 corresponding to the same magnetic attachment 7 constitute a pair of plug-in positions on the side frame 6, and the shape of the socket 6 enables the magnetic attachment 7 to have multiple plug-in orientations.

[0077] Embodiment 4 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention:

[0078] The difference from Example 1 is that Fig.12 As shown, six holes of the same size are provided on each end of the side frame 8 (corresponding to the side frame 1 in Example 1) corresponding to each magnetic attachment body 9 (corresponding to the magnetic attachment body 2 in Example 1), specifically two first holes 81 arranged oppositely, two second holes 82 arranged oppositely and two third holes 83 arranged oppositely, and the six holes are all circular holes and pass through the side frame 8; the two first holes 81, the two second holes 82 and the two third holes 83 each constitute a group of matching holes, the six holes are on the circumference of the same circle, and the center line of the two holes of each group of matching holes passes through the center of the circle, the angle between the center line of the two holes of each group of matching holes and the length extension direction of the side frame 8 is different, and the two circles where the corresponding holes on the two side frames 8 are located are symmetrical about the perpendicular bisector of the line connecting the centers of the two circles; the three groups of matching holes on each side frame 8 enable the magnetic attachment body 9 to have three plug-in orientations, and the three groups of matching holes on the two side frames 8 corresponding to the same magnetic attachment body 9 together constitute a pair of plug-in positions on the side frame 8.

[0079] like Figure 13-Figure 15 As shown, the end of the magnetic attachment 9 is provided with two protrusions 91 adapted to any group of holes on the side frame 8, and the protrusions 91 extend along the length direction of the magnetic attachment 9. The two protrusions 91 on the magnetic attachment 9 can be inserted into any group of holes on the side frame 8 to realize the insertion of the magnetic attachment 9 and the side frame 8. The magnetic attachment 9 can also be inserted into different holes by replacing the protrusions 91 to realize the angle-adjustable insertion of the magnetic attachment 9 on the side frame 8; wherein, the length direction of the magnetic attachment 9 is parallel to the line connecting the centers of the two circles where the corresponding insertion holes on the two side frames are located.

[0080] Embodiment 5 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention:

[0081] The difference from Example 1 is that the arrangement frame in Example 5 is provided with two magnetic attachment bodies 4 (corresponding to the magnetic attachment body 2 in Example 1), and a tunnel hole 41 is provided in the middle area of ​​the back side of the adsorption surface of the two magnetic attachment bodies 4, which enters from one point on the middle area and passes through another point. A finger rope 10 connected end to end is installed in the tunnel hole 41, and the rope length of the finger rope 10 can at least rotate around the index finger or the middle finger. The installation method of the finger rope 10 is as follows: Fig.16 As shown, by providing the finger strap 10, when the user's fingers are tired of holding the arrangement rack after using the arrangement rack for a long time, a method of holding the arrangement rack by the finger strap 10 can be used instead. This method can also comfortably hold the two-row arrangement rack. For example, the middle finger is put into the finger strap 10, and the thumb and the base of the thumb are clamped on the corresponding same side of the arrangement rack. In this way, the arrangement rack can be held comfortably. Practice has shown that when this method is used for holding, the holding is very stable and smooth, and the experience is even better than the former, and it is very convenient for people with small hands to use. It can be used as a parallel method.

[0082] Embodiment 6 of the wide-viewing angle magnetic mahjong tile arrangement rack provided by the present invention:

[0083] The difference from Example 1 is that the side frame is composed of a main frame arm 101 and an auxiliary connecting piece 102, and the magnetic attachment 103 (corresponding to the magnetic attachment 2 in Example 1) is plug-connected to the main frame arm 101 through the auxiliary connecting piece 102. Figure 17-Figure 19 As shown, one end of the main frame arm 101 corresponding to each magnetic attachment 103 is provided with a connector socket for inserting the auxiliary connector 102, and the connector socket runs through the main frame arm 101. The connector socket includes a circular socket 1011 close to the magnetic attachment and a square socket 1012 away from the magnetic attachment. The circular socket 1011 and the square socket 1012 are coaxially connected, and the diameter of the circular socket 1011 is smaller than the diameter of the inscribed circle of the square socket 1012 intercepted by the surface perpendicular to the extension direction of the connector socket; the square socket 1012 constitutes a regular polygon socket on the main frame arm.

[0084] like Figure 20-22As shown, the auxiliary connecting member 102 includes a square end 1021 adapted to the square socket 1012, a cylindrical transition section 1022 adapted to the circular socket 1011, and a clamping portion 1023 close to the magnetic attachment and extending out of the circular socket 1011. The clamping portion 1023 is also a cylindrical structure. The clamping portion 1023 is integrally formed with the square end 1021 and the cylindrical transition section 1022. The diameter thereof is the same as the diameter of the cylindrical transition section 1022 and is slightly smaller than the diameter of the circular socket 1011. A slot 10231 is provided on the clamping portion 1023, which is actually a groove between a pair of symmetrical protrusions with an arched cross-section extending from the cylindrical transition section 1022 toward the magnetic attachment body 103, and the slot 10231 or the pair of protrusions are symmetrical about a plane passing through the central axis of the cylindrical transition section 1022. The slot 10231 penetrates the clamping portion 1023 in the radial direction of the auxiliary connecting part, and the slot 10231 is located in the middle of the clamping portion 1023, so the slot 10231 is the clamping portion groove.

[0085] like Fig.23 As shown, the end of the magnetic attachment 103 is provided with two matching holes 1031 corresponding to the symmetrical arched protrusions on the auxiliary connecting piece 102, and the spacing between the two holes 1031 is adapted to the width of the slot 10231. When in use, the magnetic attachment 103 and the auxiliary connecting piece 102 are plugged in and matched; the partial structure of the magnetic attachment 103 between the two holes 1031 constitutes the tongue portion.

[0086] Because the auxiliary connecting piece 102 can be rotated 90°, 180°, 270° and 360° after being pulled out a small section (the length of the small section should be greater than the axial thickness of the square column part in the square socket 1012) and then inserted into the connecting piece socket on the main frame arm 101 again, the magnetic attachment 103 that is plugged into the auxiliary connecting piece 102 can be adjusted in angle relative to the main frame arm 101, that is, the angle of the magnetic attachment 103 relative to the plane where the two side frames are located can be adjusted.

[0087] The square socket 1012 enables the auxiliary connector 102 to have multiple insertion positions, thereby enabling the magnetic attachment 103 to have multiple insertion positions. The two connector sockets on the two side frames 101 corresponding to the same magnetic attachment 103 form a pair of coaxial plugging positions.

[0088] The contact surface after the auxiliary connecting piece 102 and the main frame arm 101 are plugged in, and the contact surface after the magnetic attachment 103 and the auxiliary connecting piece 102 are plugged in are defined as plugging surfaces. A layer of natural rubber is coated on the plugging surfaces to make the plugging surfaces more wear-resistant and to make the plugging of the magnetic attachment 103 and the auxiliary connecting piece 102, and the plugging of the auxiliary connecting piece 102 and the main frame arm 101 tighter; natural rubber constitutes an elastic wear-resistant material.

[0089] In the above-mentioned wide-viewing angle magnetic mahjong tile arrangement racks, in the embodiments 1 to 6, each magnetic attachment body of the two side racks is provided with only one pair of plug-in positions. In other embodiments, each magnetic attachment body of the two side racks can be provided with more than two pairs of plug-in positions, such as two pairs, three pairs, etc.

[0090] In the embodiment 5 of the wide-viewing angle magnetic mahjong tile arrangement rack, both magnetic attachment bodies are provided with finger straps. In other embodiments, the finger strap may be provided on only one of the magnetic attachment bodies.

[0091] In the above-mentioned wide-viewing angle magnetic mahjong tile arrangement rack, the number of magnetic attachments is three in Embodiment 1 to Embodiment 4 and Embodiment 6. In other embodiments, the number of magnetic attachments can also be appropriately increased or decreased, as long as there are more than two, such as setting four magnetic attachments or setting two magnetic attachments.

[0092] In the above-mentioned embodiments 1 to 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, the length direction of the side frame and the length direction of the magnetic attachment are perpendicular to each other. In other embodiments, the length direction of the side frame and the length direction of the magnetic attachment may not be perpendicular to each other and can also be used, but this does not conform to the habits of most users.

[0093] In the above-mentioned embodiments 1 to 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, the two side frames are separate parts. In other embodiments, the two side frames can also be connected by a connecting structure, such as providing an adapted U-shaped card frame, the two side frames are clamped on two opposite sides of the U-shaped card frame, or a detachable connecting rod is provided between the two side frames, and the two side frames are connected by the connecting rod, but it is more troublesome to store and pack and it will take up a large space.

[0094] In the above-mentioned embodiments 1 to 5 of the wide-viewing angle magnetic mahjong tile arrangement rack, the side frame is a straight strip-shaped sheet. In other embodiments, the side frame may not be a straight sheet, but may be a sheet with a certain curvature, which also meets the requirements, but it will take up a large space when packaging the side frame; the side frame may not be a sheet structure, but may be a columnar structure, and the cross section of the columnar structure cut by a plane perpendicular to its length direction may be square, semicircular, trapezoidal, flat arched, etc.

[0095] In the above-mentioned embodiments 1 to 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, the magnetic attachment has one adsorption surface. In other embodiments, the magnetic attachment may also have more than two adsorption surfaces, which may be set according to specific requirements.

[0096] In the first embodiment of the wide-viewing angle magnetic mahjong tile arrangement rack, slots are provided on both the side frame and the magnetic attachment. In other embodiments, the slots can be provided on only one of the side frame and the magnetic attachment, which also meets the requirements, but such a setting may cause abnormal relative movement between the side frame and the magnetic attachment.

[0097] In the above-mentioned embodiments 1 to 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, the magnetic attachment is made of a combination of magnetic plastic and magnetic rubber, and the magnetic rubber is attached to the magnetic plastic. In other embodiments, the magnetic attachment can also be made of other materials, such as only magnetic rubber, or only a single other permanent magnetic material, or two or more other permanent magnetic materials, or non-magnetic materials and permanent magnetic materials are fixed together, or the permanent magnetic materials are arranged and then non-magnetic materials are poured outside the permanent magnetic materials, or injection moldable composite permanent magnetic materials are directly used for injection molding, or polymer composite permanent magnetic materials are directly used for injection molding, all of which meet the requirements.

[0098] In the above-mentioned embodiments 1 to 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, the two side frames are arranged in parallel, and the three magnetic attachments inserted on the side frames have the same size. In other embodiments, the two side frames may also be arranged in non-parallel, such as the upper ends of the two side frames are close to each other, the three magnetic attachments have different sizes, and the lengths gradually increase from top to bottom, and the magnetic attachments and the side frames are inserted to form a trapezoidal arrangement rack.

[0099] In the above-mentioned embodiments 1 to 5 of the wide-viewing angle magnetic mahjong tile arrangement rack, the magnetic attachment is a flat strip-shaped plate-like structure. In other embodiments, the magnetic attachment can be a structure of other shapes, such as a strip-shaped plate-like structure with a certain curvature, or a straight strip-shaped columnar structure, and the shape of the cross section of the magnetic attachment taken by a plane perpendicular to its length direction can be a flat arch, a semicircle, or other shapes, as long as it has at least one smooth plane constituting an adsorption surface.

[0100] In the above-mentioned embodiments 1 to 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, the elastic wear-resistant material coated on the plug-in surface is natural rubber. In other embodiments, the elastic wear-resistant material can also be polyurethane rubber, butadiene rubber, silicone rubber, wear-resistant polyurethane elastomer, etc.

[0101] In the above-mentioned wide-viewing angle magnetic mahjong tile arrangement rack in Embodiments 1, 2 and 4, each side frame has three slots corresponding to each magnetic attachment. In other embodiments, the number of slots corresponding to each magnetic attachment on each side frame can be increased or decreased as needed, as long as there are more than two, such as two or four.

[0102] In the embodiment 3 of the wide viewing angle magnetic mahjong tile arrangement rack, the shape of the jack is a regular hexagon. In other embodiments, the jack can also be other shapes, such as squares, regular triangles and other regular polygons, and can also be regular star-shaped polygons, such as regular five-pointed stars.

[0103] In the above-mentioned embodiment 4 of the wide-viewing angle magnetic mahjong tile arrangement rack, the jack is a circular jack. In other embodiments, the jack can also be a hole of other shapes, such as a square, a regular pentagon or other regular polygon, or other non-regular polygon jacks, and the shape of the corresponding protrusion on the magnetic attachment body must be adapted to the jack. It should be noted that when the jack is a non-circular jack, the relative position relationship of each group of holes should satisfy that each group of holes can be regarded as obtained by rotating one group of holes around the center of the circle by a certain angle.

[0104] In the above-mentioned embodiment 4 of the wide-viewing angle magnetic mahjong tile arrangement rack, there are three groups of holes. In other embodiments, the number of groups of holes can also be increased or decreased according to actual needs, as long as the number of groups is more than two, such as two groups, five groups, etc.

[0105] In the fourth embodiment of the wide-viewing angle magnetic mahjong tile arrangement frame, the jack runs through the side frame. In other embodiments, the jack may not run through the side frame.

[0106] In the above-mentioned embodiment 4 of the wide-viewing angle magnetic mahjong tile arrangement rack, the two holes in each pair of holes are the same size. In other embodiments, the two holes in each pair of holes can also be different in size, as long as the protrusions on the magnetic attachment body are adapted thereto.

[0107] In the above-mentioned embodiment 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, the portion of the connector jack away from the magnetic attachment body is a square jack. In other embodiments, the portion can also be other regular polygonal jacks, such as regular triangle jacks, regular hexagonal jacks, etc., or the portion can also be a regular star-shaped polygonal jack, such as a regular five-pointed star jack.

[0108] In the above-mentioned embodiment 6 of the wide-viewing angle magnetic mahjong tile arrangement rack, two holes are provided at the end of the magnetic attachment body, and the two protrusions on the auxiliary connecting piece are matched to realize the plug-in fit between the magnetic attachment body and the auxiliary connecting piece. In other embodiments, the plug-in fit between the magnetic attachment body and the auxiliary connecting piece can also be realized by other structural methods, such as: two symmetrical grooves are provided on the two opposite surfaces of the end of the magnetic attachment body, and the protrusions can be inserted or pulled out of the clamping part in the direction of their length, and the bottom of the two symmetrical grooves is used as the boundary to form a tongue part, and the tongue part can be inserted into the groove of the clamping part, so that the plug-in fit between the magnetic attachment body and the auxiliary connecting piece can also be realized.

[0109] Embodiments of the magnetic mahjong tile arrangement rack with continuously variable viewing angle provided by the present invention:

[0110] like Fig.24 As shown, the continuously variable viewing angle magnetic mahjong tile arrangement frame includes two independently arranged side frames 105, the two side frames 105 together constitute a holding frame, the two side frames 105 are arranged in parallel and extend in the longitudinal direction, and two identical magnetic attachments 104 extending in the transverse direction are simultaneously inserted on the side frames 105, and the two magnetic attachments 104 are arranged at intervals in the longitudinal direction (the interval width is such that the two adjacent sides of the two adjacent magnetic attachments 104 do not touch each other when the two adjacent magnetic attachments 104 rotate; or at least ensure that the two sides of each magnetic attachment can be flush with the plane of the arrangement frame frame and are preferably on the same plane, which is most conducive to producing smaller box packaging cards. Of course, other interval distances can also be set, but the rows should not be too close, otherwise they will affect the viewing angles of each other), the magnetic attachments 104 are used to absorb mahjong tiles containing soft magnetic materials, and the length directions of the two magnetic attachments 104 are perpendicular to the length directions of the side frames 105 to adapt to the card arrangement habits of most users.

[0111] like Fig.24 and Fig.25 As shown, the side frame 105 includes a folding portion 1051 and a fixed portion 1052, and the folding portion 1051 and the fixed portion 1052 are divided by a longitudinal dividing axis, which extends in the longitudinal direction and is located in the transverse middle area of ​​the side frame 105; the folding portion 1051 and the fixed portion 1052 are hinged together by hinge-type hinges, and there are three hinges, which are respectively located at the two ends and the middle of the side frame 105, and the hinges include two convex columns 109 arranged on the folding portion 1051 and three convex columns 109 arranged at corresponding positions of the fixed portion 1052, and the two convex columns 109 on the folding portion 1051 and the three convex columns 109 on the fixed portion 1052 are cross-staggered The convex column 109 is arranged with a pin shaft hole extending in the longitudinal direction (the hole is located at the center of the full circle corresponding to the semicircle). When the folding part 1051 and the fixed part 1052 need to be combined, the two convex columns 109 on the folding part 1051 are first inserted into the groove formed by the three convex columns 109 on the fixed part 1052, so that the pin shaft holes of the five convex columns 109 correspond to each other, and then the pin shaft is inserted into the pin shaft hole to complete the combination of the fixed part 1052 and the folding part 1051. The pin shaft is a metal pin shaft; the combined folding part 1051 can rotate relative to the fixed part 1052 and finally realize the 90-degree angle state between the folding part 1051 and the fixed part 1052. In order to keep it at a 90-degree angle, the total length of the protruding column 109 should be approximately equal to the diameter of the upper semicircle of the front half of the protruding column 109. This can limit the folding part 1051. If you want to prevent the folding part 1051 and the fixed part 1052 from shaking at will and have a certain damping effect, the pin shaft and the pin shaft holes in the folding part 1051 and the fixed part 1052 are coated with elastic wear-resistant material. The damping effect of the elastic wear-resistant material can limit the shaking of the folding part and the fixed part.

[0112] Two axial holes 10521 arranged at intervals are provided on opposite sides of the fixed parts 1052 of the two side frames 105 , and the corresponding axial holes 10521 on the two side frames 105 are coaxially arranged.

[0113] like Fig.24 As shown, the magnetic attachment 104 is a straight strip-shaped plate structure. The magnetic attachment 104 is made of a combination of magnetic plastic and magnetic rubber. The magnetic rubber is attached to the magnetic plastic to form a smooth plane. The smooth plane constitutes an adsorption surface for adsorbing mahjong tiles. The cross-sectional shape of a section of the attachment surface of the magnetic attachment 104 corresponding to the surface perpendicular to its length direction is rectangular; a rotating shaft 108 is provided on the magnetic attachment 104 corresponding to the shaft hole 10521, and the rotating shaft 108 is fixed on the magnetic attachment. The two ends of the same magnetic attachment 104 are connected to each other. A rotating shaft 108 is coaxially arranged; when the magnetic attachment 104 and the side frame 105 are assembled, the rotating shaft 108 on the magnetic attachment 104 can be inserted into the shaft hole 10521 on the side frame 105. After the rotating shaft 108 is inserted into the shaft hole 10521, it can rotate in the shaft hole 10521. The friction between the rotating shaft 108 and the shaft hole 10521 is sliding friction, which can increase the friction force between the rotating shaft 108 and the shaft hole 10521; in this embodiment, the material of the rotating shaft 108 is a stainless steel alloy with good rigidity and toughness.

[0114] A layer of natural rubber is coated on the outer wall of the rotating shaft 108 and the inner wall of the shaft hole 10521. The natural rubber layer creates greater friction between the rotating shaft 108 and the shaft hole 10521, and the damping friction of the natural rubber layer is used to limit the rotation of the rotating shaft 108 in the shaft hole 10521; the natural rubber layer constitutes an elastic wear-resistant layer and also constitutes a locking structure of the arrangement frame.

[0115] like Fig.24 As shown, a tunnel hole 106 is provided in the middle area of ​​the back side of the adsorption surface of a magnetic attachment 104, which enters from one point on the middle area and passes through another point. A finger rope 107 connected end to end is installed in the tunnel hole 106. The length of the finger rope 107 can at least rotate around the index finger or the middle finger. By providing the finger rope 107, when the user's fingers used to hold the arrangement rack are tired after using the arrangement rack for a long time, the middle finger or index finger can be inserted into the finger rope 107 to achieve most of the weight of the arrangement rack hanging on the index finger or the middle finger, thereby reducing the fatigue of other fingers. Of course, the finger rope can be put on the finger to rest, which is actually also a good way to hold the finger.

[0116] When the continuously variable viewing angle magnetic mahjong tile arrangement rack is used, it is only necessary to insert the side frame 105 and the magnetic attachment 104 together (at this time, the arrangement rack is in a disassembled packaging state. In fact, due to the structural characteristics and advantages of the arrangement rack itself, when manufacturing, if the above-mentioned parts including the magnetic attachment, the side frame, etc. are assembled in a square sheet box of equal thickness, it can be used and not disassembled as a whole, and does not need to be assembled back and forth or disassembled for storage). After the arrangement rack is assembled, it forms a thin sheet-like rectangular frame with the horizontal direction as the length direction, the vertical direction as the width direction, and the front and back directions as the thickness direction.

[0117] In the above embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, the rotating shaft is fixed to the magnetic attachment. In other embodiments, the rotating shaft can also rotate relative to the magnetic attachment.

[0118] In the embodiment of the above-mentioned continuously variable viewing angle magnetic mahjong tile arrangement rack, the material of the rotating shaft is a stainless steel alloy with good rigidity. In other embodiments, the material of the rotating shaft can also be other metal materials with good rigidity, such as spring steel with good rigidity.

[0119] In the above embodiment, the folding part is rotated to form an angle of 90 degrees with the fixed part. In other embodiments, the angle of the folding part after rotation can also be slightly greater than 90 degrees or slightly less than 90 degrees.

[0120] In the embodiment of the above-mentioned continuously variable viewing angle magnetic mahjong tile arrangement rack, the side frame is an integral structure whose length direction extends in the longitudinal direction. In other embodiments, the side frame may also be a split structure, such as the structural form in the embodiment 6 of the above-mentioned wide viewing angle magnetic mahjong tile arrangement rack, in which the side frame includes a main frame arm and an auxiliary connecting member, the auxiliary connecting member is inserted into the main frame arm, an axial hole is provided on the auxiliary connecting member, and the rotating shaft on the magnetic attachment body is inserted into the axial hole on the auxiliary connecting member.

[0121] In the above-mentioned embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, the locking structure is a natural rubber layer coated on the outer wall of the rotating shaft and the inner wall of the shaft hole. In other embodiments, natural rubber may be coated only on the outer wall of the rotating shaft or only on the inner wall of the shaft hole; natural rubber may also be replaced by other elastic wear-resistant materials, such as polyurethane rubber, butadiene rubber, silicone rubber, wear-resistant polyurethane elastomer, etc.; the locking structure may also be other structural forms, such as fixing a plastically deformable pressure rod on the side frame, and using the pressure rod to press and fix the magnetic attachment after it rotates to the required position.

[0122] In the above-mentioned embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, the locking structure is a natural rubber layer coated on the outer wall of the rotating shaft and the inner wall of the shaft hole. In other embodiments, the natural rubber layer can also be coated on the inner wall of the shaft hole of the side frame, and the outer wall surface of the rotating shaft is processed with knurling or roughening. The rotation of the magnetic attachment relative to the side frame is limited by the damping friction generated by the natural rubber and the knurled shaft with convex and concave surfaces or the rough rough surface shaft. The natural rubber can also be replaced by other elastic wear-resistant materials, such as polyurethane rubber, butadiene rubber, silicone rubber, wear-resistant polyurethane elastomer, etc.

[0123] In the above embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, the side frame is an independently arranged split structure. In other embodiments, the side frame can also be an integral frame structure, such as two transverse connecting rods are arranged between the two side frames in the above embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle to form a frame structure.

[0124] In the embodiment of the above-mentioned continuously variable viewing angle magnetic mahjong tile arrangement frame, the side frame comprises a folding portion and a fixed portion, and the folding portion and the fixed portion can rotate relative to each other. In other embodiments, the side frame also can not be divided into two parts, but an integral structure.

[0125] In the above embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, a tunnel hole is provided on the back of the attachment surface of one magnetic attachment body, and a finger strap is inserted into the tunnel hole. In other embodiments, the tunnel hole and the finger strap may not be provided; the finger straps may also be provided on both magnetic attachment bodies at the same time.

[0126] In the embodiment of the above-mentioned continuously variable viewing angle magnetic mahjong tile arrangement rack, the number of magnetic attachments is two. In other embodiments, the number of magnetic attachments can also be appropriately increased, such as setting three magnetic attachments or setting four magnetic attachments.

[0127] In the embodiment of the above-mentioned continuously variable viewing angle magnetic mahjong tile arrangement rack, the length direction of the side frame and the length direction of the magnetic attachment are perpendicular to each other. In other embodiments, the length direction of the side frame and the length direction of the magnetic attachment may not be perpendicular to each other, and can also be used, but this does not conform to the habits of most users, is not very beautiful, and is irregular.

[0128] In the above embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, the magnetic attachment has one adsorption surface. In other embodiments, the magnetic attachment may also have more than two adsorption surfaces, which may be arranged according to specific requirements.

[0129] In the above-mentioned embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, the magnetic attachment body is made of a combination of magnetic plastic and magnetic rubber, and the magnetic rubber is attached to the magnetic plastic. In other embodiments, the magnetic attachment body can also be made of other materials, such as only using magnetic rubber, or only using a single other permanent magnetic material, or using two or more other permanent magnetic materials, or using non-magnetic materials and permanent magnetic materials fixed together to form, or after the permanent magnetic materials are arranged, non-magnetic materials are poured outside the permanent magnetic materials, or directly using injection-molded composite permanent magnetic materials, or directly using polymer composite permanent magnetic materials, all of which meet the requirements.

[0130] In the above-mentioned embodiment of the magnetic mahjong tile arrangement rack with continuously variable viewing angle, the magnetic attachment body is a flat strip-shaped plate-like structure. In other embodiments, the magnetic attachment body can be a structure of other shapes, such as a strip-shaped plate-like structure with a certain curvature, or a straight strip-shaped columnar structure, and the shape of the cross section of the section where the attachment surface of the magnetic attachment body is located is intercepted by a surface perpendicular to its length direction can be a flat arch, a semicircle, or other shapes, as long as it has at least one smooth plane constituting the adsorption surface.

Claims

1. A wide-viewing angle magnetic mahjong tile arrangement rack, comprising a laterally extending strip-shaped magnetic attachment, at least part of which is a permanent magnetic material, and an adsorption surface for adsorbing two or more mahjong tiles containing soft magnetic materials in the length direction is formed on one side thereof, and there are more than two magnetic attachments and they are arranged at intervals in the longitudinal direction, characterized in that: There are two magnetic attachments, and at least one of the two magnetic attachments has a tunnel hole in the middle area of ​​the back side of the adsorption surface of the magnetic attachment, which enters from one point and passes through another point in the middle area, wherein a finger rope connected end to end is passed through the tunnel hole, and the rope is long enough to rotate around the index finger or the middle finger for one circle, and the thumb and the base of the thumb are clamped on the corresponding same side of the arrangement frame; The wide-viewing angle magnetic mahjong tile arrangement rack also includes a holding frame for being held by a person, and the holding frame includes two side frames arranged opposite to each other in the horizontal direction; on the two side frames, a corresponding plug-in position including more than two plug-in positions that can be plugged into the two ends of the magnetic attachment is respectively arranged at the two ends of the same magnetic attachment, so that after the magnetic attachment changes its plug-in position, the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located changes; or on the two side frames, two or more pairs of plug-in positions including more than two plug-in positions that can be plugged into the two ends of the magnetic attachment are respectively arranged at the two ends of the same magnetic attachment, so that when the magnetic attachment changes its plug-in position or is plugged into different plug-in positions, the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located changes.

2. The wide-viewing angle magnetic mahjong tile arrangement rack according to claim 1, characterized in that: The side frame includes a main frame arm extending in the longitudinal direction and an auxiliary connecting piece detachably connected to the main frame arm. Both ends of each magnetic attachment body are plug-connected with the auxiliary connecting piece along its length direction, and the auxiliary connecting piece is plug-connected with the main frame arm on the side frame. When the corresponding magnetic attachment bodies and the corresponding auxiliary connecting pieces and the main frame arms form an arrangement frame, they are grouped coaxially.

3. The wide viewing angle magnetic mahjong tile arrangement rack according to claim 1, characterized in that: The side frame is an integral structure extending in the longitudinal direction, and both ends of each magnetic attachment body can be directly plugged and connected with the corresponding plug-in positions on the two side frames at the same time.

4. The wide viewing angle magnetic mahjong tile arrangement rack according to claim 3, characterized in that: On the sides of the two side frames facing or away from the human face, corresponding to one end of each magnetic attachment, a plurality of transverse through slots with different orientations are provided, and on the sides of each end of the corresponding two ends of the same magnetic attachment, a pair of through grooves with two notches facing each other and perpendicular to the length direction of the magnetic attachment are symmetrically provided, the groove bottom surfaces of the pair of through grooves are parallel to each other, and the middle tongue parts defined by the groove bottom surfaces of the two through grooves can be respectively adapted to and inserted into the plurality of through slots provided on the corresponding side frames; or, on the sides of the two side frames facing or away from the human face, corresponding to one end of each magnetic attachment, a plurality of transverse through slots with different orientations are provided, and on the sides of the two ends of the corresponding magnetic attachment, a through opening groove perpendicular to its length direction is respectively provided, and the two through opening grooves on both sides of the magnetic attachment can be respectively adapted to and inserted into the plurality of through slots provided on the corresponding side frames; in the above, each plug-in position on the side frame is a through slot on the side frame.

5. The wide viewing angle magnetic mahjong tile arrangement rack according to claim 3, characterized in that: At least one pair of identical regular polygonal plug-in holes or regular star-shaped polygonal plug-in holes sharing the same central axis are provided on the opposite sides of the two side frames corresponding to the two end portions in the length direction of each magnetic attachment body, and protrusions extending along the length direction of the magnetic attachment body and adapted to the regular polygonal plug-in holes or regular star-shaped polygonal plug-in holes are provided at the two ends of the magnetic attachment body. The protrusions and the regular polygonal plug-in holes or the regular star-shaped polygonal plug-in holes cooperate with each other to achieve the adjustable viewing angle of the adsorption surface of the magnetic attachment body on the side frame, wherein each plug-in position on the side frame is a regular polygonal plug-in hole or a regular star-shaped polygonal plug-in hole.

6. The wide viewing angle magnetic mahjong tile arrangement rack according to claim 3, characterized in that: On the opposite sides of the two side frames, corresponding to the two end portions in the length direction of each magnetic attachment, there are respectively provided with a plurality of groups of corresponding pairs of holes of the same shape and size distributed on the circumference of the same circle, the hole center lines of each group of pairs of holes pass through the center of the circle, and the two circles on the two side frames are symmetrical about the perpendicular bisector of the line connecting the centers of the two circles, the angles between the hole center lines of each group of pairs of holes and the length extension direction of the side frames are different, and the two end portions in the length direction of the magnetic attachment are respectively provided with two protrusions extending along the length direction of the magnetic attachment which are adapted to the hole shape, hole spacing and hole size of the pairs of holes on the circle, so that the magnetic attachment can be inserted into different groups of pairs of holes through the protrusions thereon to realize the insertion on the side frame with adjustable viewing angle of its adsorption surface, wherein the length direction of the magnetic attachment is parallel to the central axes of the two circles; and each plug-in position on the side frame is each group of pairs of holes on the side frame.

7. The wide viewing angle magnetic mahjong tile arrangement rack according to claim 2, characterized in that: A connector socket for inserting an auxiliary connector is provided on the main frame arm at one end corresponding to each magnetic attachment, and the connector socket includes a circular socket close to the magnetic attachment and a regular polygon socket or a regular star-shaped polygon socket away from the magnetic attachment, the circular socket is coaxially connected with the regular polygon socket or the regular star-shaped polygon socket, and the diameter of the circular socket is smaller than the diameter of the corresponding inscribed circle of the regular polygon socket or the regular star-shaped polygon socket; the auxiliary connector is inserted into the connector socket from the outside of the arrangement frame to the inside, wherein the auxiliary connector part inserted in the connector socket is adapted to the spatial shape and size of the connector socket and is coaxial The part of the auxiliary connecting piece that is close to the magnetic attachment and located outside the circular socket constitutes a clamping part of the magnetic auxiliary attachment. The clamping part is coaxial with the auxiliary connecting piece part that is inserted into the connecting piece socket, and its structure is as follows: a pair of convex columns with an arched cross-section are extended toward the magnetic attachment from the end surface of the part of the auxiliary connecting piece corresponding to the circular socket close to the magnetic attachment, and the two convex columns are symmetrical about the axis of the circular socket or the plane corresponding to the axis of the part of the auxiliary connecting piece corresponding to the circular socket, the arcuate surfaces of the two convex columns are equivalently inscribed on the inner surface of the circular socket, and the diameter of the corresponding circle where the two arcuate surfaces are located is slightly smaller than the aperture of the circular socket, A clamping groove is formed between two opposite planes between the two protruding pillars; two holes matching the two protruding pillars of the clamping part can be respectively provided on the two end surfaces of the magnetic attachment body along the length direction, so that the two corresponding protruding pillars on the two auxiliary connecting parts at the two ends of the magnetic attachment body can be inserted into the two holes at the same time, or symmetrical grooves can be simultaneously provided on the two side surfaces opposite to each other at the two ends of the magnetic attachment body, and the protruding pillars can be inserted or pulled out of the clamping part in the opposite direction along the length direction, and the bottom of the two symmetrical grooves is used as the boundary to form a tongue part in the middle of the boundary, and the tongue part can be just inserted into the groove of the clamping part; the magnetic attachment body is inserted in the clamping The holding part is inserted into the groove or sleeved on the two convex columns of the clamping part, and the clamping part is pulled out from the magnetic attachment body by pulling out the main frame arms of the two side frames, and then the auxiliary connecting part is withdrawn from the connecting part socket and reinserted into the connecting part socket after rotating the angle, and then the magnetic attachment body is plugged and assembled with the clamping part to realize the insertion of the magnetic attachment body on the side frame with adjustable adsorption surface viewing angle; wherein, the two pairs of grooves at both ends of the magnetic attachment body or the two pairs of holes on the two end surfaces are symmetrical to the central axis of the long direction of the magnetic attachment body, and the axis is coaxial with the two connecting part sockets on the main frame arm when forming an arrangement frame; in addition, each plug-in position on the side frame is a connecting part socket for the auxiliary connecting part to be inserted.

8. The wide viewing angle magnetic mahjong tile arrangement rack according to any one of claims 1 to 7, characterized in that: The length extension direction of the magnetic attachment is perpendicular to the longitudinal extension direction of the side frame.

9. The wide viewing angle magnetic mahjong tile arrangement rack according to any one of claims 1 to 7, characterized in that: The two side frames are separate independent structures.

10. The wide viewing angle magnetic mahjong tile arrangement stand according to any one of claims 1 to 7, characterized in that: The side frame is a strip-shaped sheet structure, and the part of the magnetic attachment body with the attachment surface is defined as the magnetic attachment body attachment surface segment. The cross-section shape of the magnetic attachment body attachment surface segment taken along a direction perpendicular to its length is a flat arch or a rectangle.

11. The wide viewing angle magnetic mahjong tile arrangement stand according to any one of claims 1 to 7, characterized in that: The magnetic attachment is made of injection-molded composite permanent magnetic material, or is directly made of polymer composite permanent magnetic material.

12. The wide viewing angle magnetic mahjong tile arrangement stand according to any one of claims 3 to 7, characterized in that: The two side frames are strip-shaped sheet structures with wide surfaces facing each other and longitudinally parallel, and the side surfaces of the two side frames facing away from each other are used for users to hold.

13. The wide viewing angle magnetic mahjong tile arrangement stand according to any one of claims 3 to 7, characterized in that: The side frame is a straight-line structure or a curved structure.

14. The wide viewing angle magnetic mahjong tile arrangement stand according to any one of claims 1 or 3 or 4 or 5 or 6, characterized in that: The contact surface after the magnetic attachment and the side frame are plugged together is defined as the plugging surface, and the plugging surface is coated with elastic wear-resistant material to make the plugging surface more wear-resistant and the plugging of the side frame and the magnetic attachment tighter.

15. The wide viewing angle magnetic mahjong tile arrangement rack according to any one of claims 2 or 7, characterized in that: The contact surface after the auxiliary connecting piece is plugged into the main frame arm, and the contact surface after the magnetic attachment is plugged into the auxiliary connecting piece are defined as plugging surfaces, and the plugging surfaces are coated with elastic wear-resistant material to make the plugging surfaces more wear-resistant and to make the plugging between the magnetic attachment and the auxiliary connecting piece, and between the auxiliary connecting piece and the main frame arm tighter.

16. A continuously variable viewing angle magnetic mahjong tile arrangement rack, comprising a laterally extending strip-shaped magnetic attachment, at least part of which is made of permanent magnetic material, and an adsorption surface for adsorbing two or more mahjong tiles containing soft magnetic material in the length direction thereof is formed on one side thereof, and there are more than two magnetic attachments and they are arranged at intervals in the longitudinal direction, characterized in that: A tunnel hole is provided in the middle area of ​​the back side of at least one magnetic attachment body, which enters from one point on the back side of the area and passes out from another adjacent point, wherein a finger rope connected end to end is passed through the hole, and the rope is long enough to rotate around the index finger or the middle finger for one circle, and the thumb and the base of the thumb are clamped on the corresponding same side of the arrangement frame; The continuously variable viewing angle magnetic mahjong tile arrangement rack also includes a holding frame for being held by a person, the holding frame includes two side frames arranged opposite to each other in the horizontal direction, two ends of the same magnetic attachment are respectively provided with a rotating shaft extending outward along its length direction, the rotating shafts at both ends of the magnetic attachment are coaxially arranged, and on the two side frames, a pair of coaxial shaft holes are correspondingly provided for the rotating shafts to rotate accordingly therein, each magnetic attachment and the two side frames are assembled by rotating the rotating shaft and the shaft hole so that the angle between the adsorption surface of the magnetic attachment and the plane where the two side frames are located can be adjusted steplessly, and the continuously variable viewing angle magnetic mahjong tile arrangement rack also includes a locking structure for keeping the adsorption surface of the magnetic attachment and the plane where the two side frames are located in a certain angle state.

17. The magnetic mahjong tile arrangement rack with continuously variable viewing angle according to claim 16, characterized in that: The side frame is an integral structure extending in the longitudinal direction. The rotating shafts at both ends of each magnetic attachment are directly inserted into the corresponding shaft holes of the side frame. The friction between the outer wall of the rotating shaft and the inner wall of the shaft hole is sliding friction.

18. The magnetic mahjong tile arrangement rack with continuously variable viewing angle according to claim 17, characterized in that: The rotating shafts at both ends of each magnetic attachment are respectively sealed in the end parts of the two ends and are metal shafts with good rigidity; the locking structure: either an elastic wear-resistant layer is coated on the outer wall of the rotating shaft and / or the inner wall of the shaft hole, and the damping friction of the elastic wear-resistant material is used to limit the rotation of the magnetic attachment relative to the side frame; or an elastic wear-resistant layer is coated on the inner wall of the shaft hole of the side frame, and the outer wall surface of the rotating shaft is processed with knurling or roughening, and the rotation of the magnetic attachment relative to the side frame is limited by the damping friction generated by the elastic wear-resistant material and the knurled shaft with convex and concave surfaces or the rough rough shaft with soft and hard materials.

19. The magnetic mahjong tile arrangement stand with continuously variable viewing angle according to claim 16, 17 or 18, characterized in that: The two side frames are either split structures or integral frames with a horizontal connecting rod in the middle. The entire continuously variable viewing angle magnetic mahjong tile arrangement frame composed of the magnetic attachment and the side frames is a rectangular frame with the horizontal direction as the length direction, the vertical direction as the width direction, and the front and back directions as the thickness direction.

20. The magnetic mahjong tile arrangement rack with continuously variable viewing angle according to claim 19, characterized in that: In the transverse direction of the two side frames of the continuously variable viewing angle magnetic mahjong tile arrangement frame, any longitudinal dividing axis in the middle area is respectively taken, and the outer parts of the two side frames bounded by the longitudinal dividing axis are folded toward each other around the longitudinal dividing axis, so as to fold out a folded edge that is about 90 degrees with the folded portion, and the folded edge and the folded portion are hinged together by a hinge-type hinge.

21. The magnetic mahjong tile arrangement rack with continuously variable viewing angle according to claim 20, characterized in that: In the hinge-type hinge articulated structure, the inner wall of the hinge axis hole is coated with elastic wear-resistant material, and the outer wall surface of the metal pin axis inserted in the hinge axis hole is processed with uneven knurling.

22. The magnetic mahjong tile arrangement rack with continuously variable viewing angle according to claim 16, 17 or 18, characterized in that: The length extension direction of the magnetic attachment is perpendicular to the longitudinal extension direction of the side frame.

23. The magnetic mahjong tile arrangement stand with continuously variable viewing angle according to claim 16, 17 or 18, characterized in that: The part of the magnetic attachment body with an attachment surface is defined as a magnetic attachment surface segment, and the cross-sectional shape of the magnetic attachment surface segment taken along a direction perpendicular to its length is a flat arch or a rectangle; and the magnetic attachment body is made of injection-molded composite permanent magnetic material, or is directly made of polymer composite permanent magnetic material.

24. The magnetic mahjong tile arrangement stand with continuously variable viewing angle according to claim 16, characterized in that: The part of the magnetic attachment body with an attachment surface is defined as a magnetic attachment surface segment, and the cross-sectional shape of the magnetic attachment surface segment taken along a direction perpendicular to its length is a flat arch or a rectangle; and the magnetic attachment body is made of injection-molded composite permanent magnetic material, or is directly made of polymer composite permanent magnetic material.

25. The magnetic mahjong tile arrangement rack with continuously variable viewing angle according to claim 22, characterized in that: The part of the magnetic attachment body with an attachment surface is defined as a magnetic attachment surface segment, and the cross-sectional shape of the magnetic attachment surface segment taken along a direction perpendicular to its length is a flat arch or a rectangle; and the magnetic attachment body is made of injection-molded composite permanent magnetic material, or is directly made of polymer composite permanent magnetic material.

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