WO2022166871A1

WO2022166871A1 - Snowflake insertion building block

Info

Publication number: WO2022166871A1
Application number: PCT/CN2022/074915
Authority: WO
Inventors: 胡红琴
Original assignee: 苏州美济翔医疗科技有限公司
Priority date: 2021-02-05
Filing date: 2022-01-29
Publication date: 2022-08-11

Abstract

Disclosed in the present invention is a snowflake insertion building block. The insertion building block comprises: a sheet-like body, multiple notches that are distributed at intervals around the circumferential direction on the outer peripheral edge of the body and divide the outer peripheral edge of the body into multiple fins; and multiple insertion portions, which match the notches, such that two insertion building blocks are assembled, the surfaces of the insertion portions being provided with insertion slots recessed with respect to the body, and at least some of the insertion portions being located at outer peripheral edge of the fins to form outer insertion portions.

Description

Snowflake plug-in building blocks

technical field

The present application belongs to the technical field of educational toys, and in particular relates to a snowflake plug-in building block.

Background technique

At present, a snowflake plug-in building block generally includes a sheet-like body and a plurality of tooth openings, and the plurality of tooth openings are distributed at intervals around the circumferential direction on the outer peripheral edge of the sheet-like body. During splicing, one building block clamps the sheet-like body of the other building block through its tooth gap, thereby realizing the plug connection between the two building blocks.

Generally, in the existing snowflake plug-in building blocks, the mutual clamping at the tooth gap is generally adopted between the two existing building blocks, that is, one building block is clamped at the inner end of the tooth gap of the other building block through its tooth gap. On the body, in order to maintain the integrity of the appearance of the snowflake, the density of the tooth gap distribution is limited, so that the splicing position of the building blocks is small, and the angle of the adjacent tooth gap is large, which makes the flexibility of the building block splicing less interesting; moreover, the width of the tooth gap is usually It is set to be the same or slightly larger than the thickness of the sheet body, so that the user can easily splicing the building blocks, but the lack of constraints on the normal direction of the tooth gap will make the cooperation between the two plugged building blocks not firm and spliced together. It is easy to sway between the two building blocks, making it difficult for the building blocks to stack up in a stable and beautiful shape, reducing the use effect of the building blocks.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a snowflake plug-in building block, increase the splicing position at the snowflake fins, increase the density of the plug-in part on the basis of not affecting the overall appearance, and increase the number of snowflake plug-in positions. The smaller angle of the adjacent plug parts and the different center distances of the two snowflakes improve the flexibility and interest of the splicing, and the constraint on the normal direction of the tooth gap solves the problem of weak splicing.

In order to achieve the purpose of the above application, an embodiment of the present application provides a snowflake plug-in building block, including:

sheet body;

a plurality of tooth gaps, which are distributed at intervals around the circumferential direction on the outer peripheral edge of the main body and divide the outer peripheral edge of the main body into a plurality of fins;

a plurality of plug-in parts matched with the tooth gaps to make the two plug-in building blocks spliced, the surface of the plug-in parts has a slot recessed relative to the body; at least part of the plug-in parts are formed in the The outer peripheral edge of the fin constitutes an outer plug portion.

Preferably, the slot of the outer plug-in portion communicates with the outer peripheral surface of the fin, and extends from the outer peripheral surface of the fin to the center of the body;

On any cross section of the tooth gap, the minimum width of the tooth gap is always smaller than the thickness of the main body; in the cross section of the plug part, the minimum thickness of the plug part is always smaller than the main body thickness of.

Preferably, the plurality of tooth gaps are evenly distributed around the circumferential direction on the outer peripheral edge of the body, and extend radially inward from the outer peripheral surface of the body, and each of the fins is formed with a one or more of the outer plugs;

Wherein, each of the external plug-in parts is set so that its slot extends along the radial direction of the body; or, some or all of the external plug-in parts are set so that its slot is parallel to the adjacent one of the tooth gaps to extend.

Preferably, part of the plug-in parts are located in the fins to form the outer plug-in parts; another part of the plug-in parts are located at the inner end of the tooth gap and its slot extends coaxially with the tooth gap , and constitute the inner plug-in part.

Preferably, the height of the tooth gap in the direction of the normal line of the body matches the width of the slot, so that when the two plugged blocks are in a spliced state, one of them is plugged into two of the sockets of the block. Each side is against the tooth opening of the other plugged building block.

Preferably, along the extending direction of the tooth gap, the minimum width of the tooth gap is constant; along the extending direction of the slot, the minimum thickness of the insertion portion is constant.

Preferably, as the recessed depth of the slot increases, the width of the slot gradually decreases;

In the normal direction of the body, the width of the tooth gap gradually decreases and then gradually increases.

Preferably, the slot has a clamped surface and two positioning surfaces, the clamped surface is a plane and constitutes a bottom surface of the slot, and the two positioning surfaces are respectively located at the bottom of the clamped surface. two sides and constitute the sides of the slot;

The tooth gap has a clamping surface matched with the clamped surface and two positioned surfaces matched with the two positioning surfaces one-to-one, and the clamping surfaces are plane and parallel to the normal line direction.

Preferably, both the positioning surface and the positioned surface are set as inclined planes and have an included angle of 45° with the normal direction;

The locating surface of any one of the tooth gaps and the locating surface of the slot extending coaxially with the tooth gap are coplanar.

Preferably, both the positioning surface and the surface to be positioned are set as inclined planes; and the angle A between the positioning surface and the normal direction is the difference between the positioned surface and the normal direction. The included angle B between them is a complementary angle to each other, and the angle of the included angle B is greater than the angle of the included angle A.

Preferably, the positioning surface is: along the extending direction of the slot, the included angle A between the slot and the normal direction gradually decreases from the maximum value A _max ;

The positioned surface is: along the extension direction of the tooth gap, the included angle B between the tooth gap and the normal direction is gradually reduced to the twist plane B _min ;

Wherein, the positioned surface of any one of the tooth gaps and the positioning surface of the slot extending coaxially with the tooth gap are smoothly connected to each other and B _min =A _max .

Preferably, the positioning surface is a concave arc surface with a constant radius along the extending direction of the slot;

The positioned surface is: along the extending direction of the tooth gap, a concave arc surface with a constant radius;

Wherein, the positioned surface of any one of the tooth gaps and the positioning surface of the slot extending coaxially with the tooth gap are arranged coaxially and with equal diameters.

Preferably, the clamped surface is perpendicular to the normal direction; the two clamping surfaces of the tooth gap are parallel and opposite.

Preferably, between the positioning surface and the clamped surface adjacent to it, and between the positioning surface and the surface of the body adjacent to it, and between the positioned surface and the surface adjacent to it Between the adjacent clamping surfaces, as well as between the positioned surface and the surface of the body adjacent to it, arc transitions are connected.

Preferably, the groove surface of the slot is: along the extending direction of the slot, a concave arc surface with a constant radius;

The boundary surface of the tooth gap is a convex arc surface with a constant radius along the extending direction of the tooth gap.

Preferably, the radius of the convex arc surface is the same as the radius of the concave arc surface.

Compared with the prior art, the beneficial effect of the present application is that: by arranging the plug-in parts in the fins, the tooth gap of one plug-in building block can be plugged into the fin of another plug-in block, and the plug-in connection can be improved. The interestingness of the building blocks, combined with the slot setting of the plug-in part and the width setting of the tooth gap, can also ensure the plug-in positioning and stability between the two plug-in building blocks.

Description of drawings

1 is a perspective view of the plug-in building block of Embodiment 1 of the present application;

2a is a front view of the plug-in building block of Embodiment 1 of the present application;

Figure 2b is a cross-sectional view along line A-A in Figure 2a;

Figure 2c is a cross-sectional view along line B-B in Figure 2a;

3 is a schematic diagram of a splicing state of two plug-in building blocks according to Embodiment 1 of the present application;

Figure 4a is a cross-sectional view along line C-C in Figure 3;

Figure 4b is a cross-sectional view along line D-D in Figure 3;

5 is a perspective view of the plug-in building block of Embodiment 2 of the present application;

6a is a front view of the plug-in building block of Embodiment 2 of the present application;

Figure 6b is a cross-sectional view along line A-A in Figure 6a;

Figure 6c is a cross-sectional view along line B-B or line E-E in Figure 6a;

7 is a front view of the splicing state of three plug-in building blocks of Embodiment 2 of the present application;

Figure 8a is a front view of the plug-in building block of Embodiment 3 of the present application;

Figure 8b is a cross-sectional view along line A-A in Figure 8a;

Fig. 8c is a cross-sectional view along line B-B or line E-E in Fig. 8a;

Figure 9a is a front view of the splicing state of two plug-in building blocks according to Embodiment 3 of the present application;

Figure 9b is a cross-sectional view along line C-C in Figure 9a;

10 is a perspective view of the plug-in building block of Embodiment 4 of the present application;

11a is a front view of the plug-in building block of Embodiment 4 of the present application;

Figure 11b is a cross-sectional view taken along line A-A in Figure 11a;

Fig. 11c is a cross-sectional view along line B-B or line E-E in Fig. 11a;

12 is a perspective view of the plug-in building block of Embodiment 5 of the present application;

13a is a front view of the plug-in building block of Embodiment 5 of the present application;

Figure 13b is a cross-sectional view along line A-A in Figure 13a;

Fig. 13c is a cross-sectional view taken along line B-B or line E-E in Fig. 13a.

Detailed ways

The present application will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and the structural, method, or functional transformations made by those of ordinary skill in the art according to these embodiments are all included in the protection scope of the present application.

Example 1

As shown in FIG. 1-4b, the snowflake plug-in building block 100 according to Embodiment 1 of the present application is introduced. As shown in FIG. 1 , the plug-in building block 100 includes a sheet-shaped body 10 , a plurality of tooth gaps 11 and a plurality of plug-in parts.

The sheet-like body 10 constitutes the main body of the plug-in building block 100 , which is generally configured as a sheet-like structure with a central through hole 103 . Of course, the central part of the main body of the plug-in building block 100 can also be provided with a central through hole of other shapes, or no central through hole is provided. 2a-2c, the sheet-like body 10 also has surfaces 10-1 and 10-2 that are parallel and oppositely arranged, and an outer peripheral surface 102, and the outer peripheral surface 102 connects the surface 10-1 and the surface 10- 2. For ease of expression and understanding, the normal direction F of the sheet-like body 10 is defined in the relative direction of the surface 10-1 and the surface 10-2, and the sheet-like body 10 has a constant thickness H in the normal direction F, and the thickness H is Spacing between surface 10-1 and surface 10-2.

A plurality of tooth gaps 11 are distributed at intervals around the circumferential direction on the outer peripheral edge of the sheet-like body 10, and divide the outer peripheral edge of the sheet-like body 10 into a plurality of fins 101. In this embodiment, the number of tooth gaps 11 is set to 8. Correspondingly, the outer peripheral edge of the sheet-like body 10 is divided into 8 fins 101, and a tooth is formed between any two adjacent fins 101. Ports 11 are spaced apart. Of course, the number of tooth gaps 11 and the corresponding number of fins 101 are not limited to the examples in the drawings, for example, they can be changed to 6, 12 or others.

Each tooth gap 11 has two opposite and symmetrically arranged boundary surfaces, the two boundary surfaces define the width of the tooth gap 11 , and the two boundary surfaces respectively form two fins on both sides of the tooth gap 11 . 101 , from another angle, the two boundary surfaces can also be regarded as the side edges of the two fins 101 .

The plurality of plug-in parts are formed in the sheet-like body 10 and integrally provided with the sheet-like body 10 . The insertion part and the tooth opening 11 are matched so that the two insertion building blocks 100 are inserted and matched with each other, that is, the insertion part and the tooth opening 11 are matched in structure and shape. When the building blocks 100 are connected for splicing, the tooth gap 11 of any one of the plug-in building blocks 100 can be matched with the insertion part of the other plug-in building block 100 . The plug-in portion of another plug-in building block 100 can be accommodated and clamped, so that the two plug-in building blocks 100 can be plugged and matched.

In one embodiment, the plug-in parts are divided into a plurality of plug-in parts 12 and a plurality of plug-in parts 13 based on different positions of the plug-in parts in the sheet-like body 10 .

Among them, a plurality of plug-in parts 12 are formed at the inner end of the tooth gap 11, which is also named as the inner plug-in part 12 for the convenience of distinction and understanding. In this embodiment, the inner end of each tooth gap 11 has a plug-in connection The number of the fins 12, that is, the number of the plug-in parts 12 is set to 8; while the plurality of plug-in parts 13 are formed at the outer peripheral edge of the sheet-like body 10, specifically formed in the fins 101, or located in the adjacent two Between the tooth gaps 11, in order to facilitate the distinction and understanding, it is also named as the outer plug-in part 13. In this embodiment, each fin 101 is formed with one plug-in part 13, that is, the number of the plug-in parts 13 is also Eight, of course, a plurality of plug portions 13 may be formed in one fin 101 .

Both the plug-in part 12 and the plug-in part 13 can be matched with the tooth opening 11 to realize the splicing of the two plug-in building blocks 100 .

Specifically, referring to FIGS. 2 a to 2 c , the

insertion parts

12 and 13 each have a slot 14 matching the tooth gap 11 , the slot 14 constitutes the surface of the

insertion parts

12 and 13 , and the minimum thickness of the

insertion parts

12 and 13 It is smaller than the thickness H of the sheet-like body 10 , and correspondingly, the minimum width W of the tooth gap 11 is also smaller than the thickness H of the sheet-like body 10 . In this way, when two plug-in blocks 100 are spliced, the boundary surface of the tooth gap 11 of one of the plug-in blocks 100 can abut on the groove surface of the slot 14 of the other plug-in block 100, so that the two The splicing between the tooth opening 11 of the plug-in building block 100 and the

insertion parts

12 and 13; and, through the cooperation of the slot 14 and the tooth opening 11, the positioning during splicing can also be facilitated. The thickness of 13 and the minimum width W of the tooth gap 11 are both smaller than the thickness H of the sheet-like body 10 to ensure the splicing firmness of the two plug-in building blocks 100 .

Moreover, by disposing the plug portion 13 in the fin 101, not only can the tooth gap 11 of one plugged building block 100 be plugged into the fin 101 of another plugged building block 100, but also the two plugged building blocks 100 While improving the splicing firmness, the fun and reliability of the plug-in building block 100 are improved.

Further, the slot 14 of the plug-in portion 12 communicates with the inner end of the tooth gap 11 and extends coaxially with the tooth gap 11; One end of the fin 101 is connected to the outer peripheral surface 102 of the fin 101 , and the slot 14 of the plug-in portion 13 extends away from the outer peripheral surface 102 of the fin 101 toward the inner end of the fin 101 .

Except for the different positions, the plurality of plug-in parts, including the plug-in part 12 and the plug-in part 13, are preferably set to have the same structure. The structure of the plug-in parts will be described below.

Preferably, referring to FIG. 2 b , in any cross section of the tooth gap 11 , the minimum width W of the tooth gap 11 is always smaller than the thickness H of the sheet-like body 10 . The cross section of the tooth gap 11 is the cross section perpendicular to the extending direction of the tooth gap 11 from the outside to the inside; the width of the tooth gap 11 is the distance between the two boundary surfaces of the tooth gap 11 .

Correspondingly, referring to FIGS. 2 b and 2 c , on any cross section of the plug-in

parts

12 and 13 , the minimum thickness h of the plug-in

parts

12 and 13 is always smaller than the thickness H of the sheet-like body 10 . Wherein, the cross-sections of the plug-in

parts

12 and 13 are also the cross-sections perpendicular to the extending direction of the sockets 14 of the plug-in

parts

12 and 13 .

In this way, compared with the prior art, in the plug-in building block 100 of the present embodiment, the minimum thickness h of the plug-in

parts

12 and 13 and the minimum width W of the tooth gap 11 are always smaller than The thickness H of the shaped body 10 is determined by the thickness H of the body 10. Therefore, when the two plug-in building blocks 100 are spliced through the cooperation of the tooth gap 11 and the plug-in part 12, or, the two plug-in building blocks 100 pass through the tooth gap 11 and the plug-in part 13. When splicing together, it can ensure that the user can conveniently plug and locate, avoid swinging and shaking between the two plugged building blocks 100 , which is conducive to piling up a stable and beautiful shape and enhances the fun.

Preferably, in the normal direction F, opposite sides of the plug-in

parts

12 and 13 have slots 14 , that is, the plug-in

parts

12 and 13 have a surface 10 - 1 opposite to the sheet-like body 10 along the normal direction. One slot 14 recessed by F, and another slot 14 recessed in the normal direction F relative to the surface 10 - 2 of the sheet body 10 , the two slots 14 have the same structure. Correspondingly, the tooth gap 11 is set to match the shape of the

insertion parts

12 and 13, so as to facilitate insertion.

Further, the width of the slot 14 matches the height of the tooth gap 11 along the normal direction F, so that the two plug-in building blocks 100 restrict each other from moving in the width direction of the slot 14 in the spliced state, which can further avoid Swing and shaking occurs between the two plug-in building blocks 100, which is beneficial to the stability of the shape of the plug-in building blocks.

For example, as shown in Figure 3, two of the plug-in building blocks are in a spliced state. For the convenience of description, one of the plug-in building blocks is marked as 100-1, and the other plug-in building block is marked as 100-2; the position of the C-C section line in Figure 3 4a, the tooth gap 11 of the plug-in building block 100-1 is matched to the plug-in part 12 of the plug-in block 100-2, and the slot 14 of the plug-in part 12 of the plug-in block 100-2 restricts the plug-in block 100-1 moves in the width direction of the slot 14 of the plug-in portion 12 of the plug-in building block 100-2 (ie, the left-right direction in the figure); at the position of the D-D section line in FIG. 3, referring to FIG. 4b, the plug-in block 100- The tooth gap 11 of 2 is matched to the plug part 12 of the plug-in building block 100-1. At this time, the slot 14 of the plug-in part 12 of the plug-in block 100-1 restricts the plug-in block 100-2 from the plug-in block 100-1. The slot 14 of the plug portion 12 moves in the width direction (ie, the up and down direction in the figure).

It can be understood that when the plug portion 13 of one plug-in building block 100 is in a spliced state with the tooth opening 11 of another plug-in block 100, the plug-in portion 13 can limit the “another plug-in block 100” in the The slot 14 of the plug-in portion 13 moves in the width direction, thereby further avoiding rocking and shaking between the two plug-in building blocks 100 , which is beneficial to the stability of the shape of the plug-in building blocks.

Preferably, referring to FIG. 2b, in the normal direction F of the sheet body 10, the width of the tooth gap 11 gradually decreases and then gradually increases; correspondingly, referring to FIGS. increases, the width of the slot 14 gradually decreases. In this way, the insertion between the tooth gap 11 and the

insertion parts

12 and 13 is convenient.

Further, in this embodiment, referring to FIGS. 2b and 2c, the slot 14 has a clamped surface 14a and two positioning surfaces 14b. The clamped surface 14a is set as a plane and constitutes the bottom surface of the slot 14, that is, the clamped surface 14a defines the maximum value of the recessed depth of the slot 14 along the normal direction F of the sheet body 10, and further , the distance between the two clamped surfaces 14a of the plug-in

parts

12 and 13 respectively defines the minimum thickness h of the plug-in

parts

12 and 13 . The two positioning surfaces 14b are respectively located on both sides of the clamped surface 14a and constitute two side surfaces of the slot 14 .

Correspondingly, the tooth gap 11 has a clamping surface 11 a and two positioned surfaces 11 b , and the clamping surface 11 a and the two positioned surfaces 11 b together form a boundary surface of one side of the tooth gap 11 .

The clamping surface 11a is a plane parallel to the normal direction F of the sheet-like body 10, which matches the clamped surface 14a. For example, as shown in FIG. 4a and FIG. 4b, when a tooth of the building block 100 is inserted, When the port 11 is mated with the plug-in portion 12 (or the plug-in portion 13 ) of the other plug-in building block 100 , the clamping surface 11 a of the tooth port 11 abuts against the slot of the plug-in portion 12 (or the plug-in portion 13 ) 14 of the clamped surface 14a.

The two positioning surfaces 11b are respectively located on both sides of the clamping surface 11a, and are matched with the two positioning surfaces 14b one by one. For example, as shown in FIG. 4a and FIG. When the insertion part 12 (or the insertion part 13 ) of a plugged building block 100 is mated, the two positioned surfaces 11b of the tooth gap 11 abut against the sockets of the insertion part 12 (or the insertion part 13 ) one by one The two positioning surfaces 14b of the 14, thus, the movement of the two plug-in building blocks 100 in the width direction of the slot 14 of each other is restricted by the abutment between the positioning surface 14b and the positioned surface 11b.

Preferably, in this embodiment, both the positioning surface 14b and the positioned surface 11b are set as inclined planes and have an included angle of 45° with the normal direction F of the sheet body 10 , that is, the positioning surface 14b and the normal direction F The included angle A is 45°, and the included angle B between the positioned surface 11b and the normal direction F is also 45°. In this way, referring to Fig. 4a, when the tooth gap 11 of the plug-in building block 100-1 is mated to the plug-in portion 12 (or the plug-in portion 13) of the plug-in building block 100-2, the positioning surface 14b of the plug-in building block 100-2 is exactly in line with the The positioning surfaces 11b of the plug-in building block 100-1 are in contact with each other, thereby restricting the movement of the plug-in building block 100-1 in the width direction of the slot 14 of the plug-in building block 100-2 (ie, the left-right direction in the figure). It is not only convenient for plugging and assembling, but also conducive to further improving the firmness of the plugging position between the two plugging building blocks 100 to avoid shaking.

1 and 2a, by setting the positioning surface 14b and the positioning surface 11b to have an included angle of 45° with the normal direction F, in this way, the positioning surface 11b of a tooth gap 11, and, with The positioning surfaces 14b of the sockets 14 extending coaxially with the tooth gap 11 are coplanar, which facilitates the processing of the plugged building blocks 100 .

Further, the clamped surface 14a is perpendicular to the normal direction F. As shown in FIG. In this way, along the extending direction of the slot 14, the minimum thickness h of the

insertion portions

12 and 13 is constant. Correspondingly, the two clamping surfaces 11 a on both sides of the tooth gap 11 are parallel to each other, so that along the extending direction of the tooth gap 11 , the minimum width W of the tooth gap 11 is constant. Preferably, in this embodiment, the minimum width W of the tooth gap 11 is equal to or slightly larger than the minimum thickness h of the

insertion portions

12 and 13, so as to facilitate labor-saving and convenient insertion operation, and also ensure insertion firmness.

Further, between the positioning surface 14b and the clamped surface 14a adjacent to it, and between the positioning surface 14b and the surfaces 10-1 and 10-2 of the sheet-like body 10 adjacent to it, and the positioned surface Between 11b and its adjacent clamping surface 11a, as well as between the positioned surface 11b and its adjacent surfaces 10-1 and 10-2 of the sheet-like body 10, arc transition connections are used to increase the insertion rate. Operational safety of the building block 100.

Preferably, each tooth gap 11 extends along the radial direction of the sheet-like body 10, that is, the extension lines of the plurality of tooth gaps 11 meet on the geometric center axis of the sheet-like body 10; correspondingly, as mentioned above, The inner end of each tooth gap 11 has a slot 14 of the insertion portion 12 extending coaxially therewith, so the slot 14 of each insertion portion 12 extends along the radial direction of the sheet body 10, that is, a plurality of slots 14 The extension lines of the sockets 14 of the plug-in portion 12 meet on the geometric center axis of the sheet body 10 , such a regular structural layout can enhance the aesthetics of the plug-in building blocks 100 and the design space of the spliced shapes.

Further, the plurality of tooth gaps 11 are evenly distributed around the circumferential direction on the outer peripheral edge of the sheet body 10 . For example, in this embodiment, the eight tooth gaps 11 are evenly distributed around the circumferential direction at a central angle of 45°.

Further, referring to FIG. 2a, among the plurality of plug-in parts 13: the slots 14 of some of the plug-in parts 13 extend along the radial direction of the sheet-like body 10, and the fins 101 where the fins 101 are located are equally divided in the circumferential direction, as shown in FIG. The plug portion 13a indicated in 2a; the extending direction of the slot 14 of another part of the plug portion 13 is parallel to the extending direction of one of its adjacent tooth gaps 11, such as the plug portion 13b indicated in FIG. 2a.

Correspondingly, according to the positional relationship with the two adjacent insertion parts 13, the plurality of tooth gaps 11 may further include: the tooth gap 11a indicated in FIG. The extending directions are respectively parallel to the extending direction of the tooth gap 11a; and, for the tooth gap 11b marked in FIG. 2a, the extending directions of the slots 14 of the two adjacent insertion parts 13 are not parallel to the extension direction of the tooth gap 11b. direction, but are respectively parallel to the extending direction of the two tooth gaps 11 adjacent to the tooth gap 11b, that is, the slots 14 of the two plug-in parts 13 adjacent to the tooth gap 11b are respectively drawn from the outer peripheral surface of the fin 101 102 extends toward the tooth gap 11b at an included angle of 45°. In this way, through the setting of the extending directions of the slots 14 of the plurality of plug-in parts 13 , when the plug-in parts 13 of the same plug-in building block 100 are spliced with other plug-in blocks 100 , there are many kinds of plug-in parts in different directions. 13 to choose from to enhance the fun of the building blocks.

Of course, according to the change of the extending direction of the sockets 14 of the plug-in parts 13, the plug-in building blocks 100 also have other various implementations: for example, in a modified embodiment, the sockets 14 of all the plug-in parts 13 are along the sheet-like body. 10, and divide the fins 101 where it is located into equal parts in the circumferential direction, that is, it is equivalent to replacing the remaining plug-in parts 13b with the plug-in parts 13a marked in FIG. 2a; The extension direction of the slot 14 of the part 13 is parallel to the extension direction of one of its adjacent tooth gaps 11, and each tooth gap 11 has one and only one adjacent slot 14 of the insertion part 13 parallel to its extension direction; For example, in another variant embodiment, the extending direction of the sockets 14 of all the plug-in parts 13 is parallel to the extension direction of the adjacent one of the tooth gaps 11 , and each plug-in part 13 and its adjacent one of the plug-in parts 13 extend in a direction parallel to the extension direction. The extending direction of the slot 14 is parallel to a tooth gap 11a between the two, and the extending direction of the slot 14 of the other plug-in portion 13 adjacent to the slot 14 is at an included angle of 45° and approaches the tooth gap between the two. 11b extends, ie corresponds to the alternately spaced distribution of tooth gaps 11b and tooth gaps 11a indicated in FIG. 2a. Of course, there are still many changes and implementations, so I won't list them one by one.

To sum up, compared with the prior art, the present embodiment has the following beneficial effects: on the one hand, by arranging the plug portion 13 in the fin 101, the tooth gap 11 of a plugged building block 100 can be plugged in. At the fin 101 of another plugged building block 100, the fun of the plugged building block 100 is improved; at the same time, through the settings of the width of the tooth gap 11, the thickness of the plugged part, etc., the two plugged building blocks 100 can be connected to each other. When splicing, not only can the user be able to conveniently position the plug-in connection, but also the swinging and shaking between the two plug-in building blocks 100 can be avoided, which is conducive to stacking a stable and beautiful shape.

Example 2

As shown in FIGS. 5-7 , the snowflake plug-in building block 200 according to Embodiment 2 of the present application is introduced.

Similar to the plug-in building block 100 in Embodiment 1, the plug-in building block 200 in this embodiment also includes a sheet-like body 20, a plurality of tooth openings 21 and a plurality of plug-in parts, and the plurality of plug-in parts include The plurality of insertion parts 22 at the inner end of the tooth gap 21 and the plurality of insertion parts 23 formed in the fins 201 . The difference between the plug-in building block 200 of this embodiment and the plug-in building block 100 of Embodiment 1 is only in that the inclination angle of the positioning surface 24b of the slot 24 of the plug-in

parts

22 and 23, the inclination angle of the positioning surface 21b of the tooth gap 21, the inclination angle; and the extension direction of the plurality of plug-in parts 23 . Only these differences will be introduced below, and the rest of the structures that are the same as those in Embodiment 1 will not be described again.

Specifically, referring to FIGS. 6 a to 6 c , in this embodiment, the positioning surfaces 24 b of the sockets 24 of the

insertion parts

22 and 23 and the normal direction F of the sheet body 20 have an included angle A, and the positioning surface of the tooth gap 21 21b has an included angle B with the normal direction F. In Embodiment 1, the included angle A between the positioning surface 14b and the normal direction F is 45°, and the included angle B between the positioned surface 11b and the normal direction F is also 45°; Angle A and angle B are complementary angles to each other (that is, ∠A+∠B=90°), but neither is 45°, but the angle of included angle B is greater than the angle of included angle A. For example, the angle of included angle B is 60° and the angle of the included angle A is 30°, of course, other complementary angles can also be set.

In this way, at the position of the C-C section line in FIG. 7 , the tooth opening 21 of the plug-in building block 200-2 is fitted to the plug-in portion 22 of the plug-in block 200-3, and the positioning surface 24b of the plug-in block 200-3 is just in contact with the plug-in block 200-3. The positioned surfaces 21b of the building block 200-2 are abutted against each other, thereby restricting the movement of the plug-in building block 200-2 in the width direction of the slot 24 of the plug-in building block 200-3; , the tooth gap 21 of the plug-in building block 200-3 is matched to the plug-in part 22 of the plug-in building block 200-2, and the positioning surface 24b of the plug-in building block 200-2 just fits with the positioned surface 21b of the plug-in building block 200-3 offset, thereby restricting the movement of the plug-in building block 200-3 in the width direction of the slot 24 of the plug-in building block 200-2; at the position of the F-F section line in FIG. The plug portion 23 of the plug 200-1 is connected, and the positioning surface 24b of the plug block 200-1 just fits against the positioned surface 21b of the plug block 200-2, thereby restricting the plug block 200-2 from being inserted into the plug block. The slot 24 of 200-1 moves in the width direction. In this way, not only is it convenient to plug and assemble, but it is also beneficial to further improve the firmness of the plugged position between the two plugged building blocks 200 to avoid shaking.

Of course, corresponding to the above-mentioned settings of the included angle A and the included angle B, different from Embodiment 1, in this embodiment, the positioned surface 21 b of a tooth gap 21 and the insertion surface extending coaxially with the tooth gap 21 The positioning surfaces 24b of the grooves 24 are not coplanar.

Further, in Embodiment 1, among the plurality of plug-in parts 13: the extending direction of the slot 14 of some of the plug-in parts 13 is parallel to the extending direction of an adjacent tooth gap 11, as indicated in FIG. 2a Different from this, in this embodiment, the slots 24 of all the insertion parts 23 extend along the radial direction of the sheet-shaped body 20, and the fins 201 where they are located are equally divided along the circumferential direction.

Of course, according to the change of the extending direction of the sockets 24 of the plug-in parts 23, the plug-in building block 200 also has other various implementations: for example, in a modified embodiment, the extension directions of the sockets 24 of all the plug-in parts 23 are parallel to the The extension direction of one adjacent tooth gap 21, and for each tooth gap 21, there is one and only one adjacent slot 24 of the plug-in portion 23 is parallel to the extension direction of the tooth gap 21; for example, another variant embodiment , the extending direction of the slots 24 of all the plug-in parts 23 is parallel to the extending direction of the adjacent one of the tooth gaps 21, and the extension direction of each plug-in part 23 and its adjacent one of the plug-in parts 23 The extending direction of the slot 24 of the other inserting portion 23 that is parallel to the tooth gap 21a between the two and is adjacent to the tooth gap 21b between the two extends at an included angle of 45°. Of course, there are still many changes and implementations, so I won't list them one by one.

Compared with the prior art, the present embodiment has the following beneficial effects: on the one hand, by arranging the plug portion 23 in the fin 201, the tooth gap 21 of one plug-in building block 200 can be plugged into another plug-in plug. The fins 201 of the building blocks 200 enhance the fun of plugging the building blocks 200; at the same time, through the settings of the width of the tooth gap 21, the thickness of the plug-in portion, etc., when the two plug-in building blocks 200 are spliced, not only can This enables the user to conveniently perform the plug-in positioning, and avoids swaying between the two plug-in building blocks 200, which is conducive to stacking a stable and beautiful shape.

Example 3

As shown in Figures 8a-9b, the snowflake plug-in building block 300 according to Embodiment 3 of the present application is introduced.

Similar to the plug-in building block 100 in Embodiment 1, the plug-in building block 300 in this embodiment also includes a sheet-like body 30 , a plurality of tooth openings 31 and a plurality of plug-in parts, and the plurality of plug-in parts include The plurality of insertion parts 32 at the inner end of the tooth gap 31 and the plurality of insertion parts 33 formed in the fins 301 . The difference between the plug-in building block 300 of this embodiment and the plug-in building block 100 of Embodiment 1 is only in the shape of the positioning surface 34b of the slot 34 of the plug-in

parts

32 and 33 and the shape of the positioned surface 31b of the tooth gap 31 ; and the extension direction of the plurality of plug-in parts 33 . Only these differences will be introduced below, and the rest of the structures that are the same as those in Embodiment 1 will not be described again.

Specifically, in Embodiment 1, both the positioning surface 14b and the positioned surface 11b are set as inclined planes. Different from this, in this embodiment, on the cross section perpendicular to the extending direction of the sockets 34 of the

sockets

32 and 33 , the positioning surfaces 34b of the sockets 34 of the

sockets

32 and 33 are set to have a radius of R. Concave arc surface; on the cross section perpendicular to the extending direction of the tooth gap 31, the positioned surface 31b of the tooth gap 31 is set as a concave arc surface with a radius r. Preferably, along the extending direction of the slot 34 , the radius R is constant; along the extending direction of the tooth gap 31 , the radius r is constant.

In this way, when the two plug-in building blocks 300 are spliced, for example, as shown in FIGS. 9a and 12b, the tooth gap 31 of one plug-in block 300-1 clamps and matches the plug-in portion 32 of the other plug-in block 300-2 ( or plug portion 33), a gap is formed between the positioning surface 34b of the plug-in building block 300-2 and the positioned surface 31b of the plug-in building block 300-1 and is partially abutted, thereby restricting the plug-in building block 300-1 from being inserted into the plug-in building block 300. The slot 34 of -2 moves in the width direction (ie, the left-right direction in FIG. 9b ), which not only facilitates the plug-in assembly, but also further improves the firmness of the plug-in position between the two plug-in building blocks 300 to avoid shaking .

Further, corresponding to the shapes of the positioning surface 11b and the positioning surface 14b, in Embodiment 1, the positioning surface 11b of a tooth gap 11 and the positioning of the slot 14 extending coaxially with the tooth gap 11 Different from this, in this embodiment, the positioning surface 31b of a tooth gap 31 and the positioning surface 34b of the slot 34 extending coaxially with the tooth gap 31 are in a The coaxial and equal diameters are set, that is, R=r, so as to facilitate the processing of the plug-in building blocks 300 .

Further, in Embodiment 1, among the plurality of plug-in parts 13: the extending direction of the slot 14 of some of the plug-in parts 13 is parallel to the extending direction of an adjacent tooth gap 11, as indicated in FIG. 2a Different from this, in this embodiment, referring to FIG. 8a, the slots 34 of all the plug-in parts 33 extend along the radial direction of the sheet-like body 30, and the fins 301 where the fins 301 are located are arranged in the circumferential direction equal parts.

Of course, according to the change of the extending direction of the sockets 34 of the plug-in parts 33, the plug-in building block 300 also has other various implementations: for example, in a modified embodiment, the extension directions of the sockets 34 of all the plug-in parts 33 are parallel to the The extension direction of an adjacent tooth gap 31, and for each tooth gap 31, there is one and only one adjacent slot 34 of the socket 33 is parallel to the extension direction of the tooth gap 31; for example, another variant embodiment , the extending direction of the slot 34 of all the plug parts 33 is parallel to the extending direction of the adjacent one of the tooth gaps 31, and the extending direction of the slot 34 of each plug part 33 and its adjacent one plug part 33 is the same The extending direction of the slot 34 of the other inserting portion 33 that is parallel to the tooth gap 31a between the two and is adjacent to the tooth gap 31b between the two extends at an included angle of 45°. Of course, there are still many changes and implementations, so I won't list them one by one.

Compared with the prior art, this embodiment has the following beneficial effects: on the one hand, by arranging the plug-in parts 33 in the fins 301 , the tooth gap 31 of one plug-in building block 300 can be plugged into another plug-in plug The fins 301 of the building blocks 300 enhance the fun of plugging the building blocks 300; at the same time, through the settings of the width of the tooth gap 31, the thickness of the plug-in portion, etc., when the two plug-in building blocks 300 are spliced, not only can This enables the user to conveniently perform the plug-in positioning, and avoids swaying between the two plug-in building blocks 300 , which is conducive to the accumulation of stable and beautiful shapes.

Example 4

As shown in Figures 10-11c, the snowflake plug-in building block 400 according to Embodiment 4 of the present application is introduced.

Similar to the plug-in building block 100 in Embodiment 1, the plug-in building block 400 in this embodiment also includes a sheet-shaped body 40, a plurality of tooth openings 41 and a plurality of plug-in parts, and the plurality of plug-in parts include The plurality of insertion parts 42 at the inner end of the tooth gap 41 and the plurality of insertion parts 43 formed in the fins 401 . The difference between the plug-in building block 400 of this embodiment and the plug-in building block 100 of Embodiment 1 is only in the shape of the positioning surface 44b of the slot 44 of the plug-in

parts

42 and 43 and the shape of the positioned surface 41b of the tooth gap 41 ; and the extension direction of the plurality of plug-in portions 43 . Only these differences will be introduced below, and the rest of the structures that are the same as those in Embodiment 1 will not be repeated.

Specifically, in Embodiment 1, both the positioning surface 14b and the positioned surface 11b are set as inclined planes. Different from this, in the present embodiment, referring to FIG. 11c , along the extending direction of the slots 44 of the

insertion parts

42 and 43 , the positioning surfaces 44 b of the slots 44 of the

insertion parts

42 and 43 are set to be at a distance from the normal direction F 11b, along the extension direction of the tooth gap 41, the positioned surface _41b of the tooth gap 41 is set to the angle between the normal direction F and the angle A between B gradually decreases to the twist plane of B _min .

When the two plug-in blocks 400 are spliced, the tooth gap 41 of one plug-in block 400 is clamped and matched with the plug-in

parts

42 and 43 of the other plug-in block 400, and the positioning surfaces 44b of the plug-in

parts

42 and 43 are in contact with each other. The positioned surfaces 41b of the tooth gap 41 are abutted against each other, which not only facilitates the plug-in assembly, but also further improves the firmness of the plug-in position between the two plug-in building blocks 400 to avoid shaking.

Further, corresponding to the shapes of the positioning surface 11b and the positioning surface 14b, in Embodiment 1, the positioning surface 11b of a tooth gap 11 and the positioning of the slot 14 extending coaxially with the tooth gap 11 Different from this, in this embodiment, preferably, the positioned surface 41b of a tooth gap 41, and the positioning surface 44b of the slot 44 extending coaxially with the tooth gap 41, The two are smoothly connected, that is, B _min =A _max , so as to facilitate the processing of the plug-in building blocks 400 , improve the aesthetics, and facilitate the plug-in connection.

Further, in Embodiment 1, among the plurality of plug-in parts 13: the extending direction of the slot 14 of some of the plug-in parts 13 is parallel to the extending direction of an adjacent tooth gap 11, as indicated in FIG. 2a Different from this, in this embodiment, referring to FIG. 11a, the slots 44 of all the plug-in parts 43 extend along the radial direction of the sheet-like body 40, and the fins 401 where the fins 401 are located are arranged in the circumferential direction. equal parts.

Of course, according to the change of the extending direction of the sockets 44 of the plug-in parts 43, the plug-in building blocks 400 also have other various implementation situations: for example, the extension direction of the sockets 44 of all the plug-in parts 43 is parallel to its phase. The extension direction of the adjacent one of the tooth gaps 41, and the extension direction of the slot 44 of each of the plug-in parts 43 and the adjacent one of the plug-in parts 43 is parallel to the one tooth gap 41a between them, and the adjacent tooth gap 41a. The extending directions of the sockets 44 of the other plug-in parts 43 are all extending at an included angle of 45° and approach the tooth gap 41b between the two; The extending direction of one adjacent tooth gap 41 , and for each tooth gap 41 , there is one and only one adjacent slot 44 of the plug-in portion 43 is parallel to the extending direction of the tooth gap 41 . Of course, there are still many changes and implementations, so I won't list them one by one.

Compared with the prior art, this embodiment has the following beneficial effects: on the one hand, by arranging the plug portion 43 in the fin 401, the tooth gap 41 of one plug-in building block 400 can be plugged into another plug-in plug The fins 401 of the building blocks 400 enhance the fun of plugging the building blocks 400; at the same time, through the settings of the width of the tooth gap 41, the thickness of the plug-in portion, etc., when the two plug-in building blocks 400 are spliced, not only can This enables the user to conveniently perform the plug-in positioning, and avoids swaying between the two plug-in building blocks 400 , which is conducive to stacking a stable and beautiful shape.

Example 5

As shown in Figures 12-13c, the snowflake plug-in building block 500 according to Embodiment 5 of the present application is introduced.

Similar to the plug-in building block 100 in Embodiment 1, the plug-in building block 500 in this embodiment also includes a sheet-shaped body 50 , a plurality of tooth openings 51 and a plurality of plug-in parts, and the plurality of plug-in parts include The plurality of insertion parts 52 at the inner end of the tooth gap 51 and the plurality of insertion parts 53 formed in the fins 501 . The only difference between the plug-in building block 500 of this embodiment and the plug-in building block 100 of Embodiment 1 is: the shape of the groove surface of the slot 54 of the plug-in

parts

52 and 53 , the shape of the boundary surface of the tooth gap 51 ; the extension direction of the connecting portion 53 . Only these differences will be introduced below, and the rest of the structures that are the same as those in Embodiment 1 will not be described again.

Specifically, in Embodiment 1, the groove surface of the slot 14 has a clamped surface 14a perpendicular to the normal direction F and two positioning surfaces 14b set as inclined planes; correspondingly, the edge of the tooth gap 51 The interface has a clamping surface 11a parallel to the normal direction F and two positioned surfaces 11b arranged as inclined planes. Different from this, in this embodiment, referring to FIG. 13c , on the cross section perpendicular to the extending direction of the slot 54 of the plug-in

parts

52 and 53 , the slot surface 54a of the slot 54 is set as a concave arc surface with a radius R 13b, in the cross section perpendicular to the extension direction of the tooth gap 51, the boundary surface 51a of the tooth gap 51 is set as a convex arc surface of radius r. Preferably, along the extending direction of the slot 54 , the radius R is constant; along the extending direction of the tooth gap 51 , the radius r is constant. The radius r is preferably set to be approximately equal to or slightly smaller than the radius R.

When the two plug-in building blocks 500 are spliced together, the tooth gap 51 of one plug-in block 500 clamps and matches the plug-in

parts

52 and 53 of the other plug-in block 500, and the groove surfaces 54a of the plug-in

parts

52 and 53 are connected to The boundary surfaces 51a of the tooth gap 51 are in contact with each other, which is convenient for plugging and assembling, which is conducive to further improving the firmness of the plugging position between the two plugged building blocks 500 and avoiding shaking.

Wherein, the minimum distance between the two groove surfaces 54a of the

insertion parts

52 and 53 respectively defines the minimum thickness h of the

insertion parts

52 and 53; The minimum distance between them defines the minimum width W of the tooth gap 11, and the minimum width W of the tooth gap 51 is equal to or slightly larger than the minimum thickness h of the

insertion parts

52 and 53, so that the insertion operation is labor-saving and convenient, and the insertion can also be guaranteed. Connection firmness.

Further, in Embodiment 1, among the plurality of plug-in parts 13: the extending direction of the slot 14 of some of the plug-in parts 13 is parallel to the extending direction of an adjacent tooth gap 11, as indicated in FIG. 2a Different from this, in this embodiment, referring to FIG. 13a, the slots 54 of all the plug-in parts 53 extend along the radial direction of the sheet body 50, and the fins 501 where the fins 501 are located are arranged in the circumferential direction equal parts.

Of course, according to the change of the extending direction of the sockets 54 of the plug-in parts 53, the plug-in building block 500 also has various other implementation situations: for example, the extension directions of the sockets 54 of all the plug-in parts 53 are parallel to the adjacent one The extension direction of the tooth gap 51, and the extending direction of the slot 54 of each plug-in part 53 and its adjacent one of the plug-in parts 53 is parallel to the one tooth gap 51a therebetween, and the other adjacent plug-in part 53 extends in parallel. The extending directions of the slots 54 of the connecting parts 53 are all extending at an included angle of 45° and approach the tooth gap 51b between the two; for another example, the extending directions of the slots 54 of all the connecting parts 53 are parallel to one adjacent tooth. The extending direction of the mouth 51 , and for each tooth mouth 51 , there is only one slot 54 of the adjacent plug-in portion 53 that is parallel to the extending direction of the tooth mouth 51 . Of course, there are still many changes and implementations, so I won't list them one by one.

Compared with the prior art, this embodiment has the following beneficial effects: on the one hand, by arranging the plug portion 53 in the fin 501, the tooth gap 51 of one plug-in building block 500 can be plugged into another plug-in plug The fins 501 of the building blocks 500 enhance the fun of plugging the building blocks 500; at the same time, through the settings of the width of the tooth gap 51, the thickness of the plug-in portion, etc., when the two plug-in building blocks 500 are spliced, not only can This enables the user to conveniently perform the plug-in positioning, and avoids swaying between the two plug-in building blocks 500 , which is conducive to the accumulation of stable and beautiful shapes.

It should be understood that although this specification is described in terms of embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, and each The technical solutions in the embodiments can also be appropriately combined to form other embodiments that those skilled in the art can understand. In the embodiment, the same plug-in building block can be integrated with the plug-in parts of different structures of the various embodiments, and such transformation is still included in the protection scope of the present application.

Claims

A snowflake plug-in building block, comprising,

sheet body;

a plurality of tooth gaps, which are distributed at intervals around the circumferential direction on the outer peripheral edge of the main body and divide the outer peripheral edge of the main body into a plurality of fins;

a plurality of plug-in parts, which are matched with the tooth gaps to make the two plug-in building blocks spliced, characterized in that, the surface of the plug-in parts has a slot that is recessed relative to the body; at least part of the plug-in building blocks The connecting portion is formed at the outer peripheral edge of the fin to constitute the outer inserting portion.
The snowflake plug-in building block according to claim 1, wherein the slot of the outer plug-in portion communicates with the outer peripheral surface of the fin and extends from the outer peripheral surface of the fin to the center of the body ;

On any cross section of the tooth gap, the minimum width of the tooth gap is always smaller than the thickness of the main body; in the cross section of the plug part, the minimum thickness of the plug part is always smaller than the main body thickness of.
The snowflake plug-in building block according to claim 2, wherein the plurality of tooth gaps are evenly distributed around the circumferential direction on the outer peripheral edge of the main body, and extend from the outer peripheral surface of the main body along the diameter of the main body. extending inwardly, each of the fins is formed with one or more of the outer plug-in parts;

Wherein, each of the external plug-in parts is set so that its slot extends along the radial direction of the body; or, some or all of the external plug-in parts are set so that its slot is parallel to the adjacent one of the tooth gaps to extend.
The snowflake plug-in building block according to claim 1, wherein some of the plug-in parts are located in the fins to form the outer plug-in parts; another part of the plug-in parts are located in the tooth gaps The inner end of the socket and the slot of the socket extend coaxially with the tooth opening to form an inner plug-in portion.
The snowflake plug-in building block according to claim 4, wherein the height of the tooth gap in the normal direction of the body is matched with the width of the slot, so that the two plug-in building blocks are in In the spliced state, the two sides of the slot of one plugged building block abut against the tooth gap of the other plugged building block.
The snowflake plug-in building block according to claim 4, characterized in that, along the extending direction of the tooth gap, the minimum width of the tooth gap is constant; along the extending direction of the slot, the insertion The minimum thickness of the part is constant.
The snowflake plug-in building block according to claim 4, characterized in that, as the depth of the recess of the slot increases, the width of the slot gradually decreases;

In the normal direction of the body, the width of the tooth gap gradually decreases and then gradually increases.
The snowflake plug-in building block according to claim 7, wherein the slot has a clamped surface and two positioning surfaces, the clamped surface is a plane and constitutes a bottom surface of the slot, and the two The positioning surfaces are respectively located on both sides of the clamped surface and constitute the side surfaces of the slot;

The tooth gap has a clamping surface matched with the clamped surface and two positioned surfaces matched with the two positioning surfaces one-to-one, and the clamping surfaces are plane and parallel to the normal line direction.
The snowflake plug-in building block according to claim 8, wherein the positioning surface and the positioned surface are both set as inclined planes and have an included angle of 45° with the normal direction;

The locating surface of any one of the tooth gaps and the locating surface of the slot extending coaxially with the tooth gap are coplanar.
The snowflake plug-in building block according to claim 8, wherein the positioning surface and the positioned surface are both set as inclined planes; and the included angle between the positioning surface and the normal direction is A, the included angle B between the positioned surface and the normal direction, the two are complementary angles to each other, and the angle of the included angle B is greater than the angle of the included angle A.
The snowflake plug-in building block according to claim 8, wherein the positioning surface is: along the extending direction of the slot, the included angle A with the normal direction gradually increases from the maximum value A max Reduced torsion plane;

The positioned surface is: along the extension direction of the tooth gap, the included angle B between the tooth gap and the normal direction is gradually reduced to the twist plane B min ;

Wherein, the positioned surface of any one of the tooth gaps and the positioning surface of the slot extending coaxially with the tooth gap are smoothly connected to each other and B min =A max .
The snowflake plug-in building block according to claim 8, wherein the positioning surface is a concave arc surface with a constant radius along the extending direction of the slot;

The positioned surface is: along the extending direction of the tooth gap, a concave arc surface with a constant radius;

Wherein, the positioned surface of any one of the tooth gaps and the positioning surface of the slot extending coaxially with the tooth gap are arranged coaxially and with equal diameters.
The snowflake plug-in building block according to claim 8, wherein the clamped surface is perpendicular to the normal direction; and the two clamping surfaces of the tooth gap are parallel to each other.
The snowflake plug-in building block according to claim 8, characterized in that, between the positioning surface and the clamped surface adjacent to it, and between the positioning surface and the body adjacent to it Between the surfaces, as well as between the positioned surface and the clamping surface adjacent to it, and between the positioned surface and the surface of the body adjacent to it, arc transitions are connected.
The snowflake plug-in building block according to claim 7, wherein the slot surface of the slot is a concave arc surface with a constant radius along the extending direction of the slot;

The boundary surface of the tooth gap is a convex arc surface with a constant radius along the extending direction of the tooth gap, and the radius of the convex arc surface is the same as that of the concave arc surface.