CN212491562U - Toy building block clamping structure - Google Patents

Abstract

The utility model relates to a toy building block clamping structure, which comprises building block elements and building block connecting pieces; the building block element is polyhedral, and at least one side surface of the building block element is provided with a linear groove; the building block connecting piece is provided with a clamping sheet fixed on the rotating fixed shaft; the length of the clamping sheet is greater than the width of the groove, and the width of the clamping sheet is not greater than the width of the groove; the section of the rotating fixed shaft is provided with a pair of opposite round corners which can avoid the groove to limit the positive rotation of the rotating fixed shaft; when the rotating fixed shaft rotates in the groove relative to the groove, the round angle part can avoid the limit of the inner side surface of the groove. The utility model provides a current building blocks joint single structure, the joint mode is complicated, the flexibility of building blocks joint is low, can't go out the problem of stabilizing the building blocks structure according to player's imagination and the quick nimble joint of creation.

Description

Toy building block clamping structure

Technical Field

The utility model relates to a joint structure of toy building blocks belongs to toy building blocks technical field.

Background

The toy building block is a toy for developing intelligence and creativity of children, and the building block clamping structure in the market at present is roughly divided into two types, wherein one type is mainly formed by splicing various fixing positions, and clamping and combination among building block elements are carried out at the fixed positions. However, this construction entails that the building elements must be assembled and snapped in specific positions, and cannot be fixed in any position according to the player's needs, the shape and the expandability of the building blocks being limited. The other type of building block with a mechanical tool splicing structure is used for clamping the building block elements through screws, but the clamping structure needs much time during clamping, is relatively complex in clamping structure, and cannot achieve any combined structure depending on the imagination of children.

Therefore, the embodiment is provided for solving the problems that the existing toy building block clamping structure is single, the assembling structure is complex, different building block elements are not universal, and the quick and flexible clamping-out stable structure cannot be created according to the imagination of a player.

SUMMERY OF THE UTILITY MODEL

The utility model discloses mainly solve current building blocks joint structure dumb, the model is assembled complicatedly, and building blocks component commonality is low, can't satisfy the player and utilize the nimble quick problem of putting up out stable structure of building blocks.

The utility model adopts the following technical proposal:

a toy building block clamping structure comprises a building block element 01 and a building block connecting piece 02; the building block element 01 is polyhedral, and at least one side surface of the building block element is provided with a linear groove 01B; the building block connecting piece 02 is provided with a clamping sheet 02C fixed on a rotary fixed shaft 02B; the length of the clamping sheet is greater than the width of the groove 01B, and the width of the clamping sheet is not greater than the width of the groove 01B; the section of the rotating fixed shaft 02B is provided with a pair of opposite round corners which can avoid the groove 01B to limit the positive rotation of the rotating fixed shaft; when the rotating fixed shaft 02B rotates in the groove relative to the groove, the round corner part can avoid the limit of the inner side surface of the groove.

Preferably, the section of the rotating fixed shaft 02B is provided with at least one non-round angle limited by the reverse rotation of the groove 01B, and the non-round angle part is limited by the inner side surface of the groove, so that the clamping sheet 02C can only rotate relative to the groove 01B in a single direction.

Preferably, the building block connector 02 is fixed on the expansion element 03, a pair of opposite bosses 03D are arranged on the surface of the expansion element 03, the length of each boss 03D is equal to or matched with the width of the groove 01B, and when the expansion element 03 rotates 90 degrees relative to the building block element 01, the bosses 03D are just clamped in the grooves 01B to obtain the hand feeling of being assembled in place.

Furthermore, the expansion element 03 is in a rectangular body shape, a groove 03F is formed in the back surface of the expansion element 03, and when the expansion element 03 and the building block element 01 are assembled in place, the groove 03F and the groove 01B are positioned on the same straight line; the expansion elements are clamped at the positions on the two sides of the groove 03F by force, so that the expansion elements 03 are elastically deformed, the boss 03D is separated from the surfaces of the building element 01 on the two sides of the groove, the positive pressure and the friction between the expansion elements 03 and the building element 01 are reduced, and the position of the expansion elements 03 relative to the groove 01B is adjusted.

Furthermore, the building block connector 02 is a separate part, on the positioning shaft of which two sets of two of said engagement tabs 02C are provided, which are spaced apart by 90 °, said building block connector 02 being used for the connection between two of said building block elements 01.

Furthermore, the toy building elements 01 are elongated and have the grooves 01B on a pair of end faces, and the toy building connector 02 is used to connect the end face of one toy building element 01 to the end face or side face of another toy building element 01.

Further, the building block element 01 is in the shape of a rectangular body and is formed by plastic welding of a centrally located hole part and four equally-divided parts around the centrally located hole part, wherein the centrally located hole part is provided with a centrally located hole 01A for locating the locating shaft 02A.

Further, the building block element 01 has a rectangular structure.

Furthermore, the two end faces of the building element 01 are square, and the connecting face of the expansion element 03 and the building element 01 is square with the same size.

Furthermore, the contact surfaces of the catch tabs on the building element connector 02 and the contact surfaces of the grooves on the building elements 01 have an angle of inclination of 1-5 degrees, so that the catch tabs on the building element connector 02 are elastically deformed during rotation.

Furthermore, a pair of opposite bosses 01C and a pair of opposite concave surfaces 01D are arranged on the end surface of the building element 01, the bosses 01C and the concave surfaces 01D are perpendicular to each other, when the building elements are coaxially connected, when the building elements rotate to a specified position, the boss on one building element falls into the groove on the other building element, and the sound when the boss falls into the groove gives feedback to the player that the player rotates in place.

Still further, a transition concave surface 01E is further arranged on the end face of the building block element 01 and located on the inner sides of the boss 01C and the concave surface 01D, and the boss 03D on the expansion element can rotate within the range of the transition concave surface 01E, so that elastic deformation of the clamping piece of the expansion element 03 is reduced, and the smoothness of rotation of the expansion element 03 is improved.

The beneficial effects of the utility model reside in that:

1) the problem of current building blocks joint structure singleness, the joint mode is complicated, building blocks joint's flexibility is low, can't according to player's imagination and create quick nimble joint and go out stable building blocks structure is solved.

2) With the help of the building block clamping structure, a player can clamp and connect at any position of the groove on any surface of the building block element according to the requirement of the player, and the player can flexibly and quickly build a model with any shape and any function according to the requirement of the player through the building block extension assembly connected by the basic building block element and the extension element. Including but not limited to models of wind-powered vehicles, gear change gear sets, and the like.

3) By means of the building block clamping structure, a player can build a required frame and structure, help the player learn and understand basic physical knowledge, complete related scientific experiments, and cultivate the intelligence and creativity of the player.

4) With the help of the flexibility of the clamping structure, a player can build frames and models in various shapes only by using a batch of basic building block elements, so that the problem that building block elements of different models of the existing building block clamping structure cannot be universal is solved, the waste of the building block elements is reduced, and the playability and the universality of building blocks are improved.

5) The flexibility of the building blocks during assembling is improved, the stability of the building blocks during clamping is improved, the universality of building block elements among different models is improved, and the intelligence, creativity and practical ability of players can be better cultured.

Drawings

Fig. 1 is a perspective view of a building element.

Fig. 2 is a three-dimensional view of a toy building element.

Fig. 3 is a perspective view of a building block coupling element.

Fig. 4 is a three-dimensional view of a building block coupling element.

Fig. 5 is a perspective view of an expansion element.

Fig. 6 is a three-view of an expansion element.

Fig. 7 is a schematic view of coaxial snap-fastening of a toy building element and a toy building connector.

Fig. 8 is a schematic view of the vertical snap-fastening of a toy building element to a toy building connector.

Fig. 9 is a plan view of the vertical snap-fit of the toy building elements and toy building elements.

FIG. 10 is an enlarged cross-sectional view of the construction of the toy building elements and toy building connector snap fit.

Fig. 11 shows a schematic view i of the fastening of the expansion element to the toy building element.

Fig. 12 shows a schematic view ii of the fastening of the expansion element to the toy building element.

Fig. 13 is a schematic cross-sectional view corresponding to fig. 11.

In the figure:

01 is a building block element, wherein 01A is a positioning hole of the building block element, 01B is a groove which plays a clamping effect on the building block element, 01C is a boss, 01D is a groove, and 01E is a transition concave surface;

02 is a building block connector, wherein 02A is a positioning shaft, 02B is a rotating fixed shaft, and 02C is a clamping sheet.

03 is an expansion element, wherein 03A is a positioning shaft, 03B is a rotating fixing shaft, 03C is a snap piece, 03D is a boss, and 03F is a groove.

Detailed Description

The present embodiment will be generally described as follows: referring to fig. 1-13, a novel toy block snap-fit structure includes a block element 01 with grooves on each side, a block connector 02 with snap tabs, and a spreader element 03 with snap tabs. The clamping manner is that clamping pieces 02C and 03C on the building block connector 02 and the expansion element 03 are pressed into grooves on the building block elements, after the building block connector 02 or the expansion element 03 rotates for a certain angle, on one hand, other building block elements cannot move in the vertical direction of the grooves of the building block elements in a manner that the clamping pieces 02C and 03C rotate into the grooves, on the other hand, the clamping pieces and the grooves are elastically deformed by pressing between contact surfaces of the clamping pieces 02C and 03C and the grooves 01B, so that the pressing force between the building block elements 01 and other building block elements is increased, and other building block elements 01 cannot move in the horizontal direction of the grooves 01B of the building block elements. Thereby realizing the fixed clamping between the building blocks. Wherein the building block element 01 is a building block with grooves 01B on each side, and is a basic part of a building block clamping piece structure. The building block connector 02 is used for clamping the building block element 01, the building block element 01 can be clamped and fixed through the building block connector 02, and the expansion element 03 is used for clamping expansion components (such as gears, windmills, battery packs and the like) of the building blocks on the building block element 01. Through the slot on each side of building blocks component 01 and the joint piece on other building blocks component, the player can be according to the needs of self arbitrary position department joint of slot on the arbitrary face of building blocks component, through the building blocks extension subassembly that basic building blocks component and expansion component are connected, the player also can build the model of arbitrary function according to the needs of oneself.

The present invention will be further explained with reference to the following detailed drawings:

referring to fig. 1-2, fig. 1 and 2 show a toy building element 01. Wherein fig. 1 is a perspective view of a toy building element 01, fig. 2 is a three-dimensional and sectional view (hatching is a-a in fig. 2) of the toy building element 01, 01A being a positioning hole of the toy building element 01, 01B being a groove in the toy building element 01 for snap-in action, 01C being a boss, 01D being a recess, 01E being a concave surface.

Referring to fig. 3-4, fig. 3 and 4 show a building element coupling 02, which building element coupling 02 is a coupling that is activated for fastening when a snap connection is made between building elements 01. Fig. 3 is a perspective view of the block coupling element 02, and fig. 4 is a three-dimensional view and a sectional view (hatching is B-B shown in fig. 4) of the block coupling element 02, in which 02A is a positioning shaft, 02B is a rotation fixing shaft, and 02C is a snap piece.

Referring to fig. 5-6, fig. 5 and 6 show a development element 03, which is a connector for securing an extension element of a toy building to a toy building element 01. Fig. 5 is a perspective view of the expanding element 03 in different directions, and fig. 6 is a three-dimensional view and a sectional view (hatching is C-C shown in fig. 6) of the expanding element 03, in which 03A is a positioning shaft, 03B is a rotation fixing shaft, 03C is a snap piece, 03D is a boss, 03E is a snap hole, and 03F is a groove.

Referring to fig. 7, fig. 7 is a schematic structural view showing two block elements 01 coaxially snap-fitted by a block connector 02, including two block elements 01 and a block connector 02, wherein the two block elements 01 are snap-fitted and rotated by a certain angle by the block connector 02 in the manner shown in fig. 7 to achieve snap-fitting fixation in the same direction.

Referring to fig. 8, fig. 8 is a schematic view showing a structure in which two block elements 01 are vertically snap-fitted by a block connector 02, and includes two block elements 01 and one block connector 02, and the process of snap-fitting the two block elements 01 in different directions is achieved by the block connector 02 being snapped and rotated by a certain angle in the manner shown in fig. 8.

Referring to fig. 9 and 10, fig. 9 and 10 show a cross-sectional view of the detent arrangement of a building element 01 and a building element connector 02, the cross-sectional line being positioned as D-D in fig. 9, wherein 01B in fig. 10 is a groove in the building element 01 and 02C is a detent tab on the building element connector 02.

Referring to fig. 11, the structural illustration i of fig. 11 shows the fastening of an expansion element 03 to a building element 01, comprising a building element 01 and an expansion element 03. The expansion element 03 is snapped in the manner shown in the drawing and rotated by a certain angle, so that a snap-in fastening in the vertical direction on the building element 01 is achieved.

With reference to fig. 12, the structural illustration ii of fig. 12, in which the expansion element 03 is fastened to the building element 01, comprises a building element 01 and an expansion element 03. The expansion element 03 is snapped and rotated by a certain angle in the manner shown in the figure, so that the snap fastening in the horizontal direction on the building element 01 is achieved.

Referring to fig. 13, fig. 13 shows a sectional view of the structure of the expansion element 03 fastened to the toy building element 01. The position of the section lines is shown in fig. 13 as E-E, where 01B is a groove in the toy building element 01, 03B is the axis of rotation in the fixed coupling element, and 03C is a catch in the fixed coupling element.

Referring to fig. 1 to 4, and also to fig. 7 to 10, the toy building element 01 is a polyhedral toy building block with grooves 01B on each side, which is not limited in shape, and may be a tetrahedron, a hexahedron, an octahedron, etc., and the grooves are grooves in which the latch tabs 02C of the toy building connecting element 02 may rotate at a certain angle and have a certain elastic deformability, and are not limited in shape, and may be T-shaped, dovetail grooves, etc. The building block connector 02 is a building block with a snap piece and a certain elastic deformation capacity, which can rotate a certain angle in a groove on the building block element 01, and the shape is not limited, and can be T-shaped, triangular, square and the like. The shape of the engagement piece 02C on the building block connector 02 is not limited, and may be rectangular, triangular, trapezoidal, etc. When two building elements 01 need to be fixed, the clamping sheets of the building element connectors 02 are pressed into the grooves on any surface of one of the building elements 01, then the grooves on any surface of the other building element 01 are pressed into the other clamping sheet of the building element connectors 02, and the grooves on the two building elements 01 and the clamping sheets on the building element connectors 02 are pressed by rotating a certain angle, so that the two building elements 01 are fixed. During rotation, the catch tabs 02C on the building element connector 02 will rotate in the grooves 01B in the building element 01, and since there is a certain angle of inclination between the contact surfaces of the catch tabs 02C on the building element connector and the contact surfaces of the grooves of the building element, the contact surfaces on the grooves 01B will press the catch tabs of the building element connector 02 when the building element 01 rotates, causing the catch tabs of the building element connector 02 to elastically deform and generate a large pressing force. On one hand, after the building block connecting piece 02 is rotated by a certain angle, the clamping piece is rotated into the groove, so that the building block element cannot move in the vertical direction of the groove; on the other hand, the extrusion force generated when the clamping sheet is elastically deformed increases the extrusion force on the contact surface of the building element and the other building element, so that the building element needs very large friction force when moving in the horizontal direction of the groove, and the fixed clamping of different building elements on any groove position of any surface is realized. In this embodiment, as shown in fig. 7 to 10, since the contact surface of the latch piece on the block connector 02 and the contact surface of the groove on the block element have an inclination angle of 3 degrees, the latch piece on the block connector 02 generates a certain elastic deformation when rotated, thereby realizing the latch fixation between the block elements by rotating a certain angle on any groove position on any surface.

Referring to fig. 3 and 4, in order to facilitate the player to snap-fix the toy building element 01 by a fixed angle, i.e. by a fixed angle, the present application also designs a number of right angles to the part of the fixed axis 02B of the toy building connecting element 02, as shown in fig. 4. This feature allows the building element coupling member 02 to be rotatably fixed in the groove 01B of the building element 01 by a fixed angle, while the squaring process also allows the building element coupling member 02 to be rotatably fixed in the groove 01B of the building element 01 only in a fixed direction. This characteristic makes things convenient for the player to fix building blocks connecting piece 02 on building blocks element 01 fast, avoids the too big problem that leads to the rotation angle of needing readjustment again of rotation angle. In the characteristic, the shape of the rotary fixing shaft 02B on the building block connecting piece 02 is not limited, and the rotary fixing shaft can be square, hexagonal, semicircular and the like, the number and the positions of right angles are not limited, and the rotary fixing shaft can be two right angles with equal distance, four right angles with different distance and the like. In this example, the rotation fixing shaft 02B of the block coupling member 02 is a square rotation shaft, and two right-angle processes are performed on the rotation fixing shaft in this example so that the rotation fixing shaft 02B of the block coupling member 02 cannot rotate after rotating 90 ° in the groove 01B of the block 01, and at the same time, the right-angle processes as shown in fig. 4 also make the rotation fixing shaft 02B of the block coupling member 02 rotate only clockwise in the groove 01B of the block 01.

Referring to fig. 7, 1 to 4, and secondly, in order to meet the requirement of the toy building element 01 to be snapped in at a fixed position, the present embodiment also envisages a positioning hole 01A on the toy building element 01 and a positioning shaft 02A on the toy building element connector as in fig. 1 to 2. When the location axle 02A of building blocks connecting piece 02 aimed at the locating hole 01A of building blocks element 01 pressed in, when another building blocks element 01 rotated certain angle, the rotation axis of building blocks connecting piece 02 rotated in the locating hole of building blocks element 01 all the time to it is fixed to realize that building blocks element joint is fixed on appointed position. In this example, when the building element 01 shown in fig. 7 needs to be fixed in a fixed position on another building element 01 by means of snap-fitting, the relative position of the building element 01 is always kept unchanged when the building element 01 is rotated by means of the positioning hole and the positioning shaft, so as to meet the requirement that the building element 01 needs to be fixed in a fixed position by means of snap-fitting.

Referring to fig. 7, 1 to 4, in addition, in order to meet the need for feedback to the player of the spin-in-place when the building elements 01 are snap-fitted together, the present embodiment also envisages a projection 01C and a recess 01D on the building element 01 as shown in fig. 1 to 2. The convex platforms and the concave surfaces on the building block elements correspond to each other, and the number and the shape are not limited. When a toy building element is rotated to a given position, the projection on the toy building element will fall into the recess on the other toy building element, at which point the sound of the projection on the toy building element falling into the recess will give the player feedback of the rotation in place. In this example, the boss 01C of the 2 nd toy building element 01 will just sink into the recess 01D of the 1 st toy building element 01 after rotating into place, giving the player a good indication of the click-in-place.

Referring to fig. 1, 2, 5, 6, and 11 to 13, the building element 01 is a polyhedral building block having a groove 01B on each face, and the shape is not limited, and may be a tetrahedron, a hexahedron, an octahedron, or the like, and the groove is a groove in which the clip 03C of the expansion element 03 can rotate by a certain angle and has a certain elastic deformation capability, and the shape is not limited, and may be a T shape, a dovetail groove, or the like. The expansion element 03 is a building block with a clamping piece and a certain elastic deformation capacity and can rotate for a certain angle in a groove on the building block element 01, and the shape of the fixing connecting piece is not limited and can be T-shaped, triangular, square and the like. The shape of the engaging piece 03C on the expansion element 03 is not limited, and may be rectangular, triangular, trapezoidal, etc. The fixed connecting piece can be used independently, and also can be connected with an expansion component of the building block for use, and the expansion component of the building block is not limited in form and can be a gear, a windmill, a wheel, a battery pack and the like. When the extension element 03 is to be fixed to the building element 01, the engagement tabs 03C of the fastening connection are merely pressed into the grooves 01B in the building element 01, and the rotation through a certain angle causes the engagement tabs on the fastening connection to rotate into the grooves and to produce a certain compression, so that the fastening engagement of the extension element 03 on the building element 01 is achieved. During rotation, the clamping piece 03C of the expansion element 03 rotates in the groove 01B of the building element 01, and because the contact surface of the clamping piece 03C on the expansion element 03 and the contact surface of the groove 01B on the building element 01 have a certain inclination angle, when the expansion element 03 rotates, the contact surface of the groove on the building element 01 can extrude the clamping piece of the expansion element 03, so that the clamping piece on the expansion element 03 is elastically deformed and generates a larger extrusion force. On one hand, after the fixed connecting piece is rotated by a certain angle, the clamping sheet on the fixed connecting piece can rotate into the groove, so that the fixed connecting piece cannot move in the vertical direction of the groove; on the other hand, the pressing force generated when the clip elastically deforms increases the pressing force on the contact surface of the expansion element 03 and the building element 01, so that a very high friction force is required when the fastening connection moves in the horizontal direction of the groove of the building element. The expansion element 03 can thus be fixedly clamped in any groove position on any side of the building element 01. In this example, as shown in fig. 11 to 13, since the contact surface of the engaging piece on the extending element 03 and the contact surface of the groove on the building element 01 have an inclination angle of 3 degrees, when the extending element 03 rotates, the engaging piece on the fixing connector generates a certain elastic deformation, so that the extending element 03 can rotate at a certain angle in any groove position on any surface of the building element 01 to realize the engaging fixation.

See fig. 6 and 12. In order to facilitate the player to snap-fit the expansion element 03 to the building element 01 by rotating a fixed angle, the embodiment also designs a certain number of right angles (as shown in fig. 6) on the part of the rotating fixed shaft 03B of the expansion element 03. This feature allows the fixed axis of rotation 03B of the expansion element 03 to rotate only a fixed angle in the groove 01B of the block element 01, while the right angle treatment also allows the fixed axis of rotation 03B of the expansion element 03 to rotate only in a fixed direction in the groove 01B of the block element 01. This feature makes things convenient for the player to fix extension element 03 on building block element 01 fast, avoids the too big problem that leads to the rotation angle of needing readjustment again of rotation angle. In this feature, the shape of the rotating fixing shaft 03B on the expanding element 03 is not limited, and may be square, hexagonal, semicircular, etc., and the number and positions of the right angles are also not limited, and may be two right angles at equal intervals, four right angles at different intervals, etc. In this example, the axis of rotation of the expansion element 03 is a square axis of rotation, in this example (as shown in fig. 6) the axis of rotation is treated at two right angles so that the axis of rotation 03B of the expansion element 03 is not rotated any more after rotating 90 ° in the groove 01B of the building block 01, while the treatment at right angles as shown in fig. 6 also allows the axis of rotation 02B of the building block coupling 02 to rotate only clockwise in the groove 01B of the building block 01.

See fig. 1, 2, 5, 6, 12. Secondly, in order to meet the requirement for the engagement of the expansion element 03 in the retaining position of the toy building element 01, the embodiment also provides for the positioning holes 01A on the toy building element 01 and the positioning shafts 03A on the expansion element 03 as shown in fig. 1, 2, 5 and 6. When the positioning shaft 03A of the extension element is aligned with the positioning hole 01A of the building block element 01 and is pressed in and then rotates for a certain angle, the rotating fixing shaft on the extension element 03 always rotates in the positioning hole of the building block element 01, and therefore the extension element 03 is clamped and fixed at the appointed position on the building block element 01. In the present example (as shown in fig. 12), when the extending element 03 is fixed at a designated position on the building element 01 by means of snap-fit, the relative position between the extending element 03 and the building element 01 is always determined when the extending element 03 is rotated by means of the positioning hole and the positioning shaft, so that the extending element can be fixed at the designated position on the building element 01 by snap-fit quickly and stably.

See fig. 1, 2, 5, 6, 12. In addition, in order to satisfy the requirement of giving the player the feedback that the extension element 03 is rotated in place when the extension element 03 is snap-fitted to the building element 01, the present invention further designs a boss 03D on the extension element 03 as shown in fig. 5. The grooves 01B of the building element 01 correspond to the projections 03D of the expansion element 03, and the number and shape are not limited. When the expansion element 03 is rotated to a given position, the boss on the fixed connection will fall into the concave surface on the toy building element 01, at which point the sound of the boss on the expansion element 03 falling into the concave surface on the toy building element 01 will give feedback to the player that he is rotating in place (see fig. 12). Secondly, due to the projection 01C at the fixing position of the building element 01, when the extension element 03 is rotationally snapped at the fixing position of the building element 01 (as shown in fig. 12), the elastic deformation of the snap piece on the extension element 03 is increased, which easily causes the snap piece to be damaged. In the embodiment, a concave surface 01E (as shown in fig. 1) is formed at a fixed position of the building element 01, and when the expansion element 03 rotates, the boss 03D on the expansion element can rotate in the concave surface 01E on the building element 01, so that elastic deformation of the clamping piece of the expansion element 03 is reduced, and a player can conveniently and quickly clamp the expansion element 03 at a specified position of the building element 01. In this example (see fig. 13), when the expansion element 03 is snapped onto the toy building element 01, the projection on the expansion element 03 slides into the groove on the toy building element 01 after the expansion element 03 is rotated 90 degrees, and when the projection slides, a certain sound is given to the player to give feedback that the snap is in place. The player is prevented from rotating more than 90 degrees.

See fig. 5, 6 and 11. In order to solve the problem that the position of the expansion element 03 cannot be controlled when the expansion element 03 is fixed at any position of the toy building element 01 by rotation, the embodiment further designs a groove 03F on the expansion element 03 as shown in fig. 5 and 6, when the expansion element 03 fixed on the toy building element 01 needs to move up and down, the groove on the expansion element 03 is pressed inwards to deform, the pressing force on the contact surface of the expansion element 03 and the toy building element 01 is reduced during fixing, and therefore the effect that the expansion element can move in the groove horizontal direction of the toy building element 01 after the fixing connecting piece is fixed is achieved (as shown in fig. 11). In this feature, the groove 03F on the expanding element 03 only needs to be capable of inward pressing deformation, and the shape is not limited, and may be linear, T-shaped, and the like. In this case (as shown in fig. 11), the expansion element 03 is a linear groove, and when the fixed connection to the toy building element 01 is moved up and down in the direction shown in the figure, it is only necessary to press the groove in the fixed connection inwards and then move up and down.

The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the scope of the present invention.

Claims (12)

1. The utility model provides a toy building blocks joint structure which characterized in that:

comprises a building block element (01) and a building block connecting piece (02);

the building block element (01) is polyhedral, and at least one side surface of the building block element is provided with a linear groove (01B);

the building block connecting piece (02) is provided with a clamping sheet (02C) fixed on a rotary fixed shaft (02B); the length of the clamping sheet is greater than the width of the groove (01B), and the width of the clamping sheet is not greater than the width of the groove (01B); the section of the rotating fixed shaft (02B) is provided with a pair of opposite round corners which can avoid the groove (01B) to limit the positive rotation of the rotating fixed shaft;

when the rotating fixed shaft (02B) rotates in the groove relative to the groove, the round corner part can avoid the limit of the inner side surface of the groove.

2. The toy building block clamping structure of claim 1, wherein: the section of the rotating fixed shaft (02B) is provided with at least one non-round angle limited by reverse rotation of the groove (01B), and the non-round angle part is limited by the inner side surface of the groove, so that the clamping sheet (02C) can only rotate relative to the groove (01B) in a single direction.

3. The toy building block clamping structure of claim 1, wherein: the building block connecting piece is characterized by further comprising an expanding element (03), the building block connecting piece (02) is fixed on the expanding element (03), a pair of opposite first bosses (03D) are arranged on the surface of the expanding element (03), the length of each first boss (03D) is equal to or matched with the width of the corresponding groove (01B), and when the expanding element (03) rotates 90 degrees relative to the building block element (01), the first bosses (03D) are just clamped in the corresponding grooves (01B) to obtain the hand feeling of being assembled in place.

4. A toy building block clamping structure as claimed in claim 3, wherein:

the expansion element (03) is in a rectangular body shape, a groove (03F) is formed in the back face of the expansion element, and when the expansion element (03) and the building block element (01) are assembled in place, the groove (03F) and the groove (01B) are located on the same straight line;

the expansion elements are clamped at the positions of the two sides of the groove (03F) by force, so that the expansion elements (03) are elastically deformed, the first boss (03D) is separated from the surface of the building element (01) at the two sides of the groove, the positive pressure and the friction force between the expansion elements (03) and the building element (01) are reduced, and the position of the expansion elements (03) relative to the groove (01B) is adjusted.

5. A toy building block clamping structure as claimed in any one of claims 1-3, wherein: the building block connecting piece (02) is an independent part, two clamping pieces (02C) which are separated by 90 degrees are arranged on a positioning shaft of the building block connecting piece, and the building block connecting piece (02) is used for connecting two building block elements (01).

6. The toy building block clamping structure as claimed in claim 5, wherein: the building block elements (01) are long-strip-shaped, the grooves (01B) are also formed in a pair of end faces of the building block elements, and the end face of one building block element (01) is connected with the end face or the side face of the other building block element (01) through the building block connecting piece (02).

7. The toy building block clamping structure as claimed in claim 5, wherein: the building block element (01) is in a rectangular body shape and is formed by welding a central positioning hole part and four equally-divided parts at the periphery through plastics, and the central positioning hole part is provided with a central positioning hole (01A) used for positioning the positioning shaft (02A).

8. A toy building block clamping structure as claimed in claim 3 or 4, wherein: the building block element (01) is of a rectangular structure.

9. The toy building block clamping structure of claim 8, wherein: the building block element (01) is square in two end faces, and the connection face of the expansion element (03) and the building block element (01) is square in the same size.

10. A toy building block clamping structure as claimed in any one of claims 1-3, wherein: the contact surface of the clamping sheet on the building block connecting piece (02) and the contact surface of the groove on the building block element (01) have an inclination angle of 1-5 degrees, and the clamping sheet on the building block connecting piece (02) can elastically deform when rotating.

11. The toy building block clamping structure of claim 9, wherein: the end face of the building block element (01) is provided with a pair of right-facing second bosses (01C) and a pair of corresponding right-facing concave faces (01D), the second bosses (01C) and the concave faces (01D) are perpendicular to each other, when the two building block elements are coaxially connected, when the building block elements rotate to a specified position, the second bosses (01C) on one building block element can fall into the grooves on the other building block element, and the sound generated when the second bosses (01C) fall into the grooves can give feedback to the player that the player rotates in place.

12. The toy building block clamping structure of claim 11, wherein: the inner sides of the second boss (01C) and the concave surface (01D) are further provided with a transition concave surface (01E) on the end face of the building block element (01), and the first boss (03D) on the expansion element can rotate within the range of the transition concave surface (01E), so that elastic deformation of the clamping sheet of the expansion element (03) is reduced, and the smoothness of rotation of the expansion element (03) is improved.

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