CN212141486U

CN212141486U - V-shaped spelling module

Info

Publication number: CN212141486U
Application number: CN202020066011.0U
Authority: CN
Inventors: 梁栋; 李川
Original assignee: Fourth Branch Culture Technology Hangzhou Co Ltd
Current assignee: Fourth Branch Culture Technology Hangzhou Co Ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-12-15
Anticipated expiration: 2030-01-13

Abstract

The utility model relates to the field of toys or teaching aids, and discloses a V-shaped spelling module, which comprises a first extension part (301) and a second extension part (302), wherein one end of the first extension part (301) is connected with one end of the second extension part (302), the other end of the first extension part (301) and the other end of the second extension part (302) are extension ends (303), and the included angle between the central line of the first extension part (301) and the central line of the second extension part (302) is acute angle, right angle or obtuse angle; the end face of the extension end (303) is square, and a bump (304) and a groove (305) for assembly are formed on the end face of the extension end (303). The spelling module can be used as an independent toy, and can also be used as a connection point of the spelling to be used with other spelling modules and extension pieces to spell a character style.

Description

V-shaped spelling module

Technical Field

The utility model relates to a toy or teaching aid field have especially related to a "V" type spelling module.

Background

The existing spelling toys are basically used for spelling by using radicals, but the Chinese radicals are numerous, which causes numerous toy components and brings great difficulty to people playing the toys. For example, the utility model publication No. CN201423173Y discloses a Chinese character spelling toy, which uses the radicals of Chinese characters to compose Chinese characters, and it is necessary to use hundreds of different parts to compose some frequently used Chinese characters.

Chinese patent CN201621352331.2 discloses a spelling toy, which comprises simple square members, connecting members and intersecting members, and also comprises magnetic components and rotating shaft components contained therein, and is characterized in that: the straight stroke formed by the square modules comprises a point horizontal stroke, a vertical stroke, a left-falling right-falling hook, a connecting component for connecting the connected parts of the stroke and an intersecting component for forming the intersecting part, so that the spelling is very convenient. However, the spelling toy can not be spliced among all parts, is too simple and low in interestingness, has poor stability of the spliced characters, and is high in cost when the magnetic parts are used as parts.

SUMMERY OF THE UTILITY MODEL

The utility model provides a V-shaped spelling module aiming at the defects of low interest and poor connection reliability of spelling toys in the prior art.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a V-shaped spelling module comprises a first extension part and a second extension part, wherein one end of the first extension part is connected with one end of the second extension part, the other end of the first extension part and the other end of the second extension part are extension ends, and an included angle between a center line of the first extension part and a center line of the second extension part is an acute angle, a right angle or an obtuse angle; the first extension part extension end and the second extension part extension end have the same structure, the end faces of the first extension part extension end and the second extension part extension end are all rectangular with the same shape, and a bump and a groove for assembly are formed on the end face of the extension end. A single spelling module with the shape can form strokes of transverse folding, vertical hooking, vertical lifting, transverse hooking, transverse left falling, left falling folding, left falling right falling and the like in strokes of Chinese characters, and a plurality of spelling modules can be matched to splice and form complex strokes in the Chinese characters.

Preferably, the end faces of the extending ends of the first extending part and the second extending part are both square with the side length of a, the number of the convex blocks and the number of the concave grooves are two and are respectively arranged at four corners of the end faces of the extending ends, the concave grooves are formed among the convex blocks so that the convex blocks and the concave grooves are distributed alternately, the shapes of the convex blocks and the concave grooves are matched, the shapes of the cross sections of the convex blocks and the bottom surfaces of the concave grooves are both square, and the area of the cross sections of the convex blocks and the bottom. This kind of concatenation form is convenient for extend the extension of end and with the combination of other spelling modules, and this kind of mosaic structure need not require placing of spelling module moreover, and the adaptation degree is higher.

Preferably, the cross sections of the first extension part and the second extension part are both square with the side length of a, the first extension part and the second extension part are coplanar and intersected, and the V-shaped spelling module formed by the first extension part and the second extension part is formed by splicing two or more components.

Preferably, the first extension part and the second extension part are formed by mutually joggling the first component and the second component; or the first extension part and the second extension part are formed by mutually joggling the fourth component, the fifth component and the sixth component.

Preferably, the first extension part and the second extension part of the V-shaped spelling module are formed by splicing the first component and the second component; one end of the first component is a first connecting end, and the other end of the first component is an extending end of the first extending part; one end of the second component is a second connecting end, and the other end of the second component is an extending end of the second extending part; the first connecting end and the second connecting end connect the first assembly and the second assembly through the tenon-and-mortise structure to form a V-shaped spelling module.

Preferably, the right end face of the first component is a first assembling face, the first assembling face is an inclined face, and an included angle between the first assembling face and the upper end face of the first component is equal to an included angle between the first extending portion and the second extending portion; the right end face of the second assembly is a second assembly face, the second assembly face is an inclined face, and the included angle between the second assembly face and the lower end face of the second assembly is equal to the included angle between the first extension part and the second extension part; the first assembling surface and the second assembling surface have the same shape and size; the first assembly surface is provided with a first connecting block extending along the central line of the first assembly, the rear end face of the first connecting block is flush with the rear end face of the first assembly, the second assembly surface is provided with a second connecting block extending along the central line of the second assembly, and the front end face of the first connecting block is flush with the front end face of the second assembly; the first connecting block is provided with a tenon, and the second connecting block is provided with a mortise matched with the tenon. The inclined planes with different inclination angles are designed according to requirements, so that the requirements of different included angles in the strokes can be met, for example, a 'transverse fold' or 'transverse left-falling' or 'left-falling right-falling' is formed.

Preferably, the sum of the thicknesses of the first connecting block and the second connecting block is equal to the width of the first assembling surface, and the end portions of the first connecting block and the second connecting block are both arc-shaped.

Preferably, the angle between the first mounting surface and the upper end surface of the first component is an acute angle or an obtuse angle.

Preferably, the functional element comprises an extension element, and the front surface and the back surface of the extension element can be matched with the lug and the groove of the extension end.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the applicant starts from the traditional analysis of the strokes of the components and changes the composition of the Chinese characters into the number of extending directions of each connecting point in the Chinese characters and the angle between the extending directions. Therefore, the spelling modules with different digital directions are designed, and then the spelling modules are connected together by using the functional parts to form the Chinese characters.

Simultaneously each spelling module passes through the mortise and tenon joint structure concatenation to be constituteed, and the mortise and tenon joint structure does not need to make reciprocal anchorage between the connecting piece immediately with the help of external force and screw in connection to the characters stability that the combination formed is higher, and the roughness is higher, the phenomenon of dropping can not appear, and single spelling module also can regard as toy to supply children and adult to use in addition, and is interesting high.

The V-shaped character spelling module provided by the scheme can realize strokes with two extending directions in strokes of Chinese characters, and can be independently used as a toy due to the fact that the V-shaped character spelling module is spliced by adopting a special tenon-and-mortise structure, so that the V-shaped character spelling module has a great degree of interestingness. Meanwhile, the Chinese character spelling module can form complex characters by other spelling modules, and can also be simply spliced into simple Chinese characters such as the Chinese character B by the V-shaped module and the functional parts.

Drawings

Fig. 1 is a schematic structural diagram of the assembled V-shaped spelling components of embodiments 1 to 11.

Fig. 2 is an exploded schematic view of fig. 1.

Fig. 3 is a rear perspective view of fig. 2.

FIG. 4 is a schematic diagram showing a completed assembly structure of the "V" -shaped spelling component according to embodiment 12.

Fig. 5 is an exploded schematic view of fig. 4.

Fig. 6 is a schematic view of the internal structure of fig. 4.

Fig. 7 is a schematic view of the structure of the extension.

FIG. 8 is a schematic diagram of Chinese characters formed by splicing, wherein an included angle between the first extension part and the second extension part of the V-shaped spelling module is approximately 90 degrees.

The names of the parts indicated by the numerical references in the drawings are as follows: 301-first extension, 302-second extension, 303-extension end, 304-projection, 305-recess, 306-first component, 307-second component, 308-first mounting face, 309-second mounting face, 310-first connection block, 311-second connection block, 312-mortise, 313-tenon, 314-extension piece, 304-projection, 306-recess, 306-second connection block, 312-mortise, 313-tenon, 314-extension piece,

315-fourth component, 316-fifth component, 317-sixth component, 318-first assembly opening, 319-first socket, 320-first baffle, 321-second baffle, 322-mounting face, 323-L-shaped tenon.

Detailed Description

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

Example 1

As shown in fig. 1 to 3, a "V" type spelling module includes a first extension 301 and a second extension 302, in this embodiment, the first extension 301 and the second extension 302 are substantially cylindrical with a rectangular cross section as a whole, one end of the first extension 301 and one end of the second extension 302 are connected to form a corner in a stroke, the other end of the first extension 301 and the other end of the second extension 302 are extension ends 303, and an included angle between a center line of the first extension 301 and a center line of the second extension 302 is a right angle, an acute angle or an obtuse angle; the end face of the extension end 303 is square, and a projection 304 and a groove 305 for fitting are formed on the end face of the extension end 303. It is obvious that the "V" in the "V" shaped spelling module does not limit the opening direction of the spelling module, i.e. the module formed by rotating the "V" shaped spelling module to any angle and the variation of the included angle of the "V" shaped spelling module are all the protection scope of the present application. The center line in this embodiment refers to an axis perpendicular to the end surface of the first extending portion 301 or the second extending portion 302 and passing through the center of the end surface, and in this embodiment, the end surfaces of the first extending portion 301 and the second extending portion 302 are both square, so the center line is a line perpendicular to the end surface and passing through the intersection point of the diagonals thereof; i.e., an axis passing through the end face of the vertically extending end 303 and over the center of the end face of the extending end. The cross section of each of the first extension portion 301 and the second extension portion 302 is a square with a side length of a, and the first extension portion 301 and the second extension portion 302 are coplanar and intersect.

The V-shaped spelling module can form all styles with inflection points in strokes approximately by changing the included angle between the center line of the first extension part 301 and the center line of the second extension part 302 into a right angle, an acute angle or an obtuse angle through design, the inflection points only represent the strokes with two extension directions, and strokes like Chinese character 'nai' can be formed by matching a plurality of V-shaped spelling modules with different included angles.

The upper, lower, left, right, front and rear positions in this embodiment are referred to fig. 1, and the upper, lower, left, right, front and rear positions herein are not intended to limit the scope of protection, but are only for convenience of describing the present solution.

The number of the bumps 304 and the grooves 305 is two, the bumps 304 and the grooves 305 are respectively arranged at four corners of the end face of the extension end 303, the grooves 305 are formed among the bumps 304, so that the bumps 304 and the grooves 305 are distributed alternately, the shapes of the bumps 304 and the grooves 305 are matched, the shapes of the cross section of the bumps 304 and the bottom face of the grooves 305 are both square, and the area of the cross section of the bumps 304 and the area of the bottom face of the grooves 305 are one fourth. The groove 305 and the projection 304 exactly bisect the end face 4 of the extended end 303. The advantage of the square is that the structure is not only an axisymmetric structure, but also a centrosymmetric structure, and the structure has simple splicing and high matching degree. Therefore, the splicing style which can be selected by the V-shaped splicing module with the extension end 303 in the shape in the splicing process is not limited, and the V-shaped splicing module is more convenient to assemble and splice with other splicing pieces.

The V-shaped spelling module in this embodiment is formed by combination, wherein the connection structure of each assembly combination is a traditional mortise and tenon structure or a deformation of the mortise and tenon structure.

In this embodiment, an included angle between a center line of the first extending portion 301 and a center line of the second extending portion 302 is an acute angle, and specifically, the included angle is 45 degrees. The first extension part 301 and the second extension part 302 of the V-shaped spelling module are formed by splicing a first component 306 and a second component 307; one end of the first component 306 is a first connection end, and the other end is an extension end 303 of the first extension portion 301; one end of the second component 307 is a second connecting end, and the other end is an extending end 303 of the second extending part 302; the first connecting end and the second connecting end connect the first assembly 306 and the second assembly 307 through a mortise and tenon structure to form a V-shaped spelling module.

Specifically, the right end surface of the first component 306 is a first assembling surface 308, the first assembling surface 308 is an inclined surface, and an included angle between the first assembling surface 308 and the upper end surface of the first component 306 is equal to an included angle between the first extending portion 301 and the second extending portion; the right end face of the second assembly 307 is a second assembling face 309, the second assembling face 309 is an inclined face, and the included angle between the second assembling face 309 and the lower end face of the second assembly 307 is equal to the included angle between the first extension 301 and the second extension; the first mounting surface 308 and the second mounting surface 309 have the same shape and size; the first mounting surface 308 and the second mounting surface 309 may be completely attached when mounted.

A first connecting block 310 extending along the central line of the first assembly 306 is arranged on the first assembling surface 308, the rear end surface of the first connecting block 310 is flush with the rear end surface of the first assembly 306, a second connecting block 311 extending along the central line of the second assembly 307 is arranged on the second assembling surface 309, and the front end surface of the first connecting block 310 is flush with the front end surface of the second assembly 307; the first connection block 310 and the second connection block 311 have the same thickness; the first connecting block 310 is provided with a tenon 313, and the second connecting block 311 is provided with a mortise 312 matched with the tenon 313. Wherein, the upper end surface of the first component 306 and the lower end surface of the second component 307 in this embodiment are both outer side surfaces corresponding to the included angle of "V". Since the first connecting block 310 and the second connecting block 311 have the same thickness, the first mounting surface 308 and the second mounting surface 309 have the same area, so that the front end surface and the rear end surface of the "V" shaped spelling module can be flush after the first assembly 306 and the second assembly 307 are mounted.

The shape of the tenon 313 in this embodiment is a column with a square cross section, but the tenon 313 may have other shapes.

In order to guarantee that the first connecting block 310 and the second connecting block 311 of the V-shaped character splicing module can be spliced smoothly, the sum of the thicknesses of the first connecting block 310 and the second connecting block 311 is equal to the width of the first assembling surface 308, the width of the first assembling surface 308 is the distance between the front end surface and the rear end surface of the first component 306, the front end surface of the first connecting block 310 and the rear end surface of the second connecting block 311 can be attached to each other when the character splicing module is spliced, the end parts of the first connecting block 310 and the second connecting block 311 are arc-shaped for the corner of the V-shaped character splicing module is in arc transition, and the width of the first connecting block 310 and the width of the second connecting block 311 are equal to the.

The splicing process of the V-shaped character splicing module is as follows, the tenon 313 is inserted into the mortise 312, so that the first assembling surface 308 is attached to the second assembling surface 309, the front end surface of the first connecting block 310 is attached to the rear end surface of the second connecting block 311, and the V-shaped character splicing module is formed by splicing.

Example 2

The difference from example 1 is that: the mortise 312 is a circular hole, and the tenon 313 is a cylinder.

Example 3

The difference from example 1 is that: the first extension 301 and the second extension 302 are integrally formed.

Example 4

The functional element comprises an extension element 314, the extension element 314 can be matched with the projection 304 and the groove 305 of the extension end 303 of the embodiment 1, the embodiment 2 and the embodiment 3, the structure of the front surface and the back surface of the extension element 314 is the same as the shape of the extension end 303, namely the groove 305 and the projection 304 are also arranged, and the front surface and the back surface of the extension element 314 can be matched with the projection 304 and the groove 305 of the extension end 303. The extension parts 314 can be engaged with each other to extend the lengths of the first extension part 301 and the second extension part 302. Because the extension 314 can be a central symmetrical structure, the same assembly effect can be achieved when the front surface and the rear surface of the L-shaped spelling module face outwards.

Example 5

The embodiment comprises the extending parts 314 in the embodiment 4, and a plurality of extending parts 314 and 3V-shaped spelling modules form a shape of Chinese character 'B'.

Example 6

The present embodiment is different from embodiment 1 in that the angle between the center line of the first extension 301 and the center line of the second extension 302 is 30 degrees.

Example 7

The present embodiment is different from embodiment 1 in that the angle between the center line of the first extension 301 and the center line of the second extension 302 is 15 degrees.

Example 8

The present embodiment is different from embodiment 1 in that an angle between a center line of the first extension portion 301 and a center line of the second extension portion 302 is 60 degrees.

Example 9

The present embodiment is different from embodiment 1 in that the angle between the center line of the first extension 301 and the center line of the second extension 302 is 90 degrees.

Example 10

The present embodiment is different from embodiment 1 in that an included angle between a center line of the first extending portion 301 and a center line of the second extending portion 302 is 120 degrees.

Example 11

The present embodiment is different from embodiment 1 in that an angle between a center line of the first extension portion 301 and a center line of the second extension portion 302 is 150 degrees.

Example 12

The difference from example 1 is that: the "V" type spelling module in this embodiment is composed of three components, that is, the "L" type spelling module composed of the first extension 301 and the second extension 302 is formed by mutually joggling the fourth component 315, the fifth component 316 and the sixth component 317, and the orientation of this embodiment is based on fig. 4. An extension end 303 of a first extension portion 301 at the left end of a fourth component 315, an upper end surface of the fourth component 315 is provided with a first assembly port 318 at least penetrating through a front end surface of the fourth component 315, a middle portion of the first assembly port 318 is provided with a first insertion port 319 penetrating through a lower end surface of the fourth component 315, a first baffle 320 is formed at the rear side of the first insertion port 319, a second baffle 321 is formed at the front side of the first insertion port 319, the height of the upper end surface of the first baffle 320 is higher than that of the upper end surface of the second baffle 321, the upper end surface of the fifth component 316 is an installation surface 322, the installation surface 322 is used for being attached to the lower end surface of the fourth component 315, the lower end of the fifth component 316 is an extension end 303 of the second extension portion 302, and an included angle between the installation surface 322 and the end surface of the extension end 303 of the second extension portion 302 is an acute; in this embodiment, the angle between the mounting surface 322 and the end surface of the extending end is an acute angle, and the angle is 30 degrees. An L-shaped tenon 323 is arranged on the mounting surface 322, and the L-shaped tenon 323 can be buckled on the second baffle 321 through the first inserting hole 319; when the fourth and

fifth members

315, 316 are assembled, the first assembly opening 318 and the first receptacle 319 form a receptacle that matches the shape of the sixth member 317. In this embodiment, the first assembling hole 318 penetrates through the front end face and the rear end face of the fourth component 315, and the sixth component 317 is a T-shaped plug; during assembly, the L-shaped tenon 323 penetrates through the lower portion of the first insertion hole 319, the upper end face of the second baffle 321 is moved forward, the front end face of the L-shaped tenon 323 is flush with the front end face of the fourth component 315, the upper end face of the L-shaped tenon 323 is flush with the upper end face of the first baffle 320, a slot is formed between the first baffle 320 and the second baffle 321, the sixth component 317 is inserted downwards into the first assembly hole 318 and the first insertion hole 319, the insertion end of the sixth component 317 abuts against the first baffle 320 and the L-shaped tenon 323, the sixth component 317 is pressed against the upper end faces of the first baffle 320 and the second baffle 321, and the upper end face of the sixth component 317 is flush with the upper end face of the fourth component 315.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A V-shaped spelling module is characterized in that: the novel extension joint comprises a first extension part (301) and a second extension part (302), wherein one end of the first extension part (301) is connected with one end of the second extension part (302), the other end of the first extension part (301) and the other end of the second extension part (302) are extension ends (303), and an included angle between a center line of the first extension part (301) and a center line of the second extension part (302) is an acute angle, a right angle or an obtuse angle; the extending end (303) of the first extending part (301) and the extending end (303) of the second extending part (302) are identical in structure, the end faces of the extending ends are rectangular in the same shape, and a bump (304) and a groove (305) for assembly are formed in the end face of each extending end (303).

2. The V-shaped spelling module of claim 1, wherein: the end faces of the extension end (303) of the first extension portion (301) and the extension end (303) of the second extension portion (302) are both square with the side length of a, the number of the bumps (304) and the number of the grooves (305) are two and are respectively arranged at four corners of the end face of the extension end (303), the grooves (305) are formed among the bumps (304), so that the bumps (304) and the grooves (305) are distributed alternately, the shapes of the bumps (304) and the grooves (305) are matched, the shapes of the cross sections of the bumps (304) and the bottom faces of the grooves (305) are both square, and the area of the cross sections of the bumps (304) and the area of the bottom faces of.

3. The V-shaped spelling module of claim 1, wherein: the cross sections of the first extension part (301) and the second extension part (302) are both square with the side length of a, the first extension part (301) and the second extension part (302) are coplanar and intersected, and a V-shaped spelling module formed by the first extension part (301) and the second extension part (302) is formed by splicing two or more components.

4. The V-shaped spelling module of claim 1, wherein: the first extension part (301) and the second extension part (302) are formed by mutually joggling a first component (306) and a second component (307); or the first extension part (301) and the second extension part (302) are formed by mutually joggling a fourth assembly (315), a fifth assembly (316) and a sixth assembly (317).

5. The V-shaped spelling module according to any one of claims 1 to 4, wherein: the V-shaped word spelling module formed by the first extension part (301) and the second extension part (302) is formed by mutually joggling a fourth component (315), a fifth component (316) and a sixth component (317), the extension end (303) of the first extension part (301) at the left end of the fourth component (315), the upper end surface of the fourth component (315) is provided with a first assembly port (318) at least penetrating through the front end surface of the fourth component (315), the middle part of the first assembly port (318) is provided with a first insertion port (319) penetrating through the lower end surface of the fourth component (315), the rear side of the first insertion port (319) forms a first baffle plate (320), the front side of the first insertion port (319) forms a second baffle plate (321), the height of the upper end surface of the first baffle plate (320) is higher than the height of the upper end surface of the second baffle plate (321), the upper end surface of the fifth component (316) is an installation surface (322), and the installation surface (322) is used for being attached to the lower end surface of the fourth component (315), the lower end of the fifth component (316) is an extension end (303) of the second extension part (302), and the included angle between the mounting surface (322) and the end surface of the extension end (303) of the second extension part (302) is an acute angle, an obtuse angle or 0; an L-shaped tenon (323) is arranged on the mounting surface (322), and the L-shaped tenon (323) can be buckled on the second baffle (321) through the first socket (319); when the fourth component (315) and the fifth component (316) are assembled, the first assembly opening (318) and the first socket (319) form a socket matched with the sixth component (317) in shape.

6. The V-shaped spelling module of claim 5, wherein: the first assembly opening (318) penetrates through the front end face and the rear end face of the fourth assembly (315), and the sixth assembly (317) is a T-shaped plug.

7. The V-shaped spelling module according to any one of claims 1 to 4, wherein: the first extension part (301) and the second extension part (302) of the V-shaped spelling module are formed by splicing a first component (306) and a second component (307); one end of the first component (306) is a first connecting end, and the other end is an extending end (303) of the first extending part (301); one end of the second component (307) is a second connecting end, and the other end is an extending end (303) of the second extending part (302); the first connecting end and the second connecting end connect the first component (306) and the second component (307) through a mortise and tenon structure to form a V-shaped spelling module.

8. The V-shaped spelling module of claim 7, wherein: the right end face of the first component (306) is a first assembling face (308), the first assembling face (308) is an inclined face, and the included angle between the first assembling face (308) and the upper end face of the first component (306) is equal to the included angle between the first extending part (301) and the second extending part; the right end face of the second assembly (307) is a second assembling face (309), the second assembling face (309) is an inclined face, and the included angle between the second assembling face (309) and the lower end face of the second assembly (307) is equal to the included angle between the first extension part (301) and the second extension part; the first assembling surface (308) and the second assembling surface (309) have the same shape and size; a first connecting block (310) extending along the central line of the first assembly (306) is arranged on the first assembling surface (308), the rear end face of the first connecting block (310) is flush with the rear end face of the first assembly (306), a second connecting block (311) extending along the central line of the second assembly (307) is arranged on the second assembling surface (309), and the thicknesses of the first connecting block (310) and the second connecting block (311) are the same, wherein the front end face of the first connecting block (310) is flush with the front end face of the second assembly (307); the first connecting block (310) is provided with a tenon (313), and the second connecting block (311) is provided with a mortise (312) matched with the tenon (313).

9. The V-shaped spelling module according to claim 8, wherein: the sum of the thicknesses of the first connecting block (310) and the second connecting block (311) is equal to the width of the first assembling surface (308), and the end parts of the first connecting block (310) and the second connecting block (311) are both arc-shaped; the included angle between the first assembly surface (308) and the upper end surface of the first component (306) is an acute angle or an obtuse angle.

10. The V-shaped spelling module according to any one of claims 1 to 4, wherein: the functional part comprises an extension part (314), the structures of the front surface and the back surface of the extension part (314) are matched with the structures on the end surface of the extension end (303), the extension parts (314) can be matched with each other, and the outer side surface of the joint of the first extension part (301) and the second extension part (302) is an arc surface.