CN102602446B

CN102602446B - Demountable combined sledge

Info

Publication number: CN102602446B
Application number: CN201210098616.8A
Authority: CN
Inventors: 汤国强
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-06
Filing date: 2012-04-06
Publication date: 2014-09-17
Anticipated expiration: 2032-04-06
Also published as: CN102602446A

Abstract

The invention relates to a demountable combined sledge, which comprises a seat and side sliding frames connected on two sides of the seat. The demountable combined sledge is characterized in that a double-end connector similar to a zigzag rule is demountably connected between each side sliding frame and the seat plate, each double-end connector in the shape of the zigzag rule consists of an upper insert portion and a lower insert portion, an upper connecting seat and a lower connecting seat are arranged on the seat corresponding to the upper insert portions and the lower insert portions and on each side sliding frame respectively, the seat and the side sliding frames on two sides of the seat are fixedly connected to form a whole in the manner that the upper insert portions and the lower insert portions of the double-end connectors are inserted and fastened with the upper connecting seats and the lower connecting seats. The demountable combined sledge is quick and convenient in mounting or demounting, capable of meeting strength indexes of TUV (Technischen Uberwachungs Vereine) detection completely, total integral weight can be reduced effectively, production cost can be more effectively reduced by one fifth to one fourth of cost of sledges in the prior art.

Description

A kind of removable compound type sled

Technical field

The present invention relates to a kind of sled of the use of skiing, especially a kind of dismounting is easy to connect, the removable compound type sled of low cost of manufacture.

Background technology

At present, existing sled or miniski car, consider the convenience of carrying and depositing, generally have folder function, such as China Patent No. 200720009218.9,200520011433.3 etc., complete the sled of folder function or miniski car and have not only increased the overall weight of product but increased foldable structure, and foldable structure complexity, manufacturing cost is high, as uses accidentally also easy hand clamping.

Summary of the invention

The object of the invention is to solve above-mentioned the deficiencies in the prior art, and provide a kind of simple in structure, easy to connect, processing technology is simple, and low cost of manufacture is deposited time save space, easy accessibility, the removable compound type sled of fast speed.

The technical solution adopted for the present invention to solve the technical problems is: a kind of removable compound type sled, comprise seat board and the sideslip frame that is connected to seat board both sides, it is characterized in that, between the sideslip frame of described every side and seat board, be the removable double end contiguous block that is connected with approximate zigzag ruler shape, the double end contiguous block of zigzag ruler shape is by upper, lower inlaying grafting part composition, in correspondence, on the sideslip frame of the seat board of lower inlaying grafting part and every side, be respectively arranged with, lower connecting base, double end contiguous block is by upper, lower inlaying grafting part correspondence and upper connecting base and lower connecting base are with grafting buckle form, seat board and both sides balladeur train are connected and fixed and form entirety, upper by double end contiguous block, it is to connect into entirety that lower inlaying grafting part is removable by seat board and both sides balladeur train, it is simple in structure, rationally, connect with grafting buckle form, its installation or removal are quick, convenient, coordinate and install without other accessory tools, the profile of double end contiguous block is arranged to approximate zigzag ruler shape, meet sled force request in use, can meet the intensity index that TUV detects completely, have again, due to the double end contiguous block of zigzag ruler shape and be mated upper, the unique texture combination of lower connecting base, effectively eliminate or dispersion sled internal stress or other impulsive forces in use, so each part is low to the selection requirements of material, can select various engineering plastics or metal manufacture, particularly select engineering plastics, not only effectively alleviate Product organization weight, more can effectively reduce production costs, the sled cost 1/5th to 1/4th of comparable prior art.

The present invention can also adopt following technical measures to solve: between the sideslip frame of described every side and seat board, be forward and backward shape and be connected with two double end contiguous blocks, the corresponding seat board of two double end contiguous blocks and the sideslip frame of every side are extended with respectively two upper and lower Connection Blocks, and upper connecting base and lower connecting base are separately positioned on both sides, seat board bottom surface and sideslip frame medial surface; Every side arranges two double end contiguous blocks, makes product integral structure more stable and firm.

The sideslip frame of described upper plug socket and seat board, lower plug socket and every side is formed in one; Upper and lower plug socket is manufactured moulding by the integral formula of Design of Dies, and effectively improve and be subject to force intensity, and without increasing post-production operation and cost.

On described, in lower connecting base, offer with upper, it is upper that lower inlaying grafting part is pegged graft and coordinated, lower grafting chamber, on, outside, lower grafting chamber is extended with, lower inserting groove seat, on, on lower inserting groove seat, be provided with multiple and upper, it is upper that lower grafting chamber communicates, lower inserting groove, on, inner opposite angle between lower inlaying grafting part is connected with the subtriangular grafting gusset of polylith, and grafting gusset is by upper, lower diagonal angle plate is respectively with upper, lower inserting groove is pegged graft and is coordinated, on, the left side in lower grafting chamber, right both sides have, lower buckle passage, on, lower buckle passage extending end is provided with, lower limited bayonet, in correspondence, lower buckle passage upper, a left side for lower inlaying grafting part, right both sides are provided with, lower Elastic buckle support arm, on, lower Elastic buckle support arm extending end is provided with upper, the location dop that lower limited bayonet is fastened, on, on lower inlaying grafting part is pegged graft, in lower grafting chamber, make the upper of gusset of pegging graft, lower diagonal angle plate and upper, lower inserting groove, on, lower Elastic buckle support arm and upper, the cooperation of pegging graft respectively of lower buckle passage, and by upper, lower location dop is buckled in, end face outside lower limited bayonet, makes, lower inlaying grafting part and upper, it is dismountable affixed that lower connecting base is, and seat board and both sides balladeur train are connected into entirety, subtriangular grafting gusset is by upper, lower inlaying grafting part connects into entirety, form the double end contiguous block of approximate zigzag ruler shape, grafting gusset had both completed inserting function, utilize 3 principles of determining a plane simultaneously, and the high principle of triangle stability under loading, make double end contiguous block not yielding, force-applied intensity is large, save material, moreover, on, lower inlaying grafting part both sides be respectively equipped with locking snapping use upper, lower Elastic buckle support arm, upper by extending end, lower location dop is buckled in, end face outside lower limited bayonet, in the time inserting use, on, lower location dop extends to, after lower limited bayonet, auto lock snaps onto outside end face, in the time that dismounting separates, only the upper location dop of both sides or lower location dop inwardly need be exerted pressure simultaneously, and location dop or lower location dop are departed from, lower limited bayonet, then by upper, lower inlaying grafting part is by upper, extract out in lower grafting chamber, completes the split of seat board and sideslip frame, and it is simple in structure, rationally, easy to use, dismounting is quick, saves parking space.

Every grafting gusset between the upper and lower Plug Division of described connection is provided with grafting inclined-plane, and corresponding upper and lower inserting groove seat bottom is provided with the upper and lower inclination back plate offseting with the inclined-plane of pegging graft; The setting on grafting inclined-plane, the use of not only having saved material, and more can facilitate upper and lower Plug Division can insert along upper and lower inclination back plate accurately and rapidly at every turn, simple and reasonable for structure, practical.

Described grafting inclined-plane is plane or circular-arc, and corresponding upper and lower inclination back plate is arranged to plane or circular-arc; The inclined-plane of no matter pegging graft is plane or circular-arc, can bear larger internal stress.

The sideslip frame front end of described every side is provided with acclivitous handrail handle; Handrail handle can person easy to use be firmly grasped sled in use, avoids being dished out outside sled because of inertia.

The sideslip frame medial surface of described seat board bottom surface and every side is respectively equipped with multiple crisscross reinforcement gussets; Strengthen gusset and can effectively strengthen the bulk strength of seat board and sideslip frame, increase the service life.

The sideslip top of support of described lower connecting base top has grafting breach, the upper Plug Division end face of corresponding grafting breach is provided with boss, the lower inlaying grafting part of double end contiguous block is pegged graft after lower connecting base, and boss is placed in grafting breach, and boss end face and sideslip top of support are in same plane; Grafting breach has been filled up in the setting of boss, makes product overall appearance unaffected, is that appearance preservation is smooth, the lines flow smoothly, it is strong to arrange sense.

The extending end in described upper and lower grafting chamber is provided with the outlet of pegging graft, seat board bottom surface and sideslip frame medial surface near the outlet of pegging graft are provided with upper and lower spacing block, upper and lower Plug Division is coordinated with upper and lower grafting chamber after grafting, and the extending end of upper and lower Plug Division and upper and lower spacing block offset; Upper and lower spacing block can facilitate the Fast Installation location in upper and lower Plug Division and upper and lower grafting chamber.

The invention has the beneficial effects as follows: the removable compound type sled of (1), one of the present invention, it is to connect into entirety that upper and lower Plug Division by double end contiguous block is removable by seat board and both sides balladeur train, it is simple and reasonable for structure, connect with grafting buckle form, its installation or removal are quick, convenient, coordinate and install without other accessory tools, and the profile of double end contiguous block is arranged to approximate zigzag ruler shape, meet sled force request in use, can meet the intensity index that TUV detects completely.

(2), the removable compound type sled of one of the present invention, due to the unique texture combination of the double end contiguous block of zigzag ruler shape and the upper and lower Connection Block that is mated, effectively eliminate or dispersion sled internal stress or other impulsive forces in use, so each part is low to the selection requirements of material, can select various engineering plastics or metal manufacture, particularly select engineering plastics, not only effectively alleviate Product organization weight, more can effectively reduce production costs, the sled cost 1/5th to 1/4th of comparable prior art.

(3), the removable compound type sled of one of the present invention, upper and lower Plug Division is connected into entirety by subtriangular grafting gusset, form the double end contiguous block of approximate zigzag ruler shape, grafting gusset had both completed inserting function, utilize 3 principles of determining a plane simultaneously, and the high principle of triangle stability under loading, make double end contiguous block not yielding, force-applied intensity is large, saves material.

Brief description of the drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is STRUCTURE DECOMPOSITION figure of the present invention.

Fig. 3 is the STRUCTURE DECOMPOSITION figure of relative another angle of Fig. 2.

Fig. 4 is the structural representation of double end contiguous block in the present invention.

Fig. 5 is the structural representation of another angle of double end contiguous block in the present invention.

Fig. 6 is the structural representation of seat board in the present invention.

Fig. 7 is the structural representation that in the present invention, seat board is connected with double end contiguous block.

Fig. 8 is the structural representation that frame is connected with double end contiguous block that breaks away in the present invention.

Fig. 9 is another embodiment of double end contiguous block in the present invention.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is further described.

As shown in Figures 1 to 8, a kind of removable compound type sled, comprise seat board 2 and the sideslip frame 3 that is connected to seat board 2 both sides, it is characterized in that, between the sideslip frame 3 of described every side and seat board 2, be the removable double end contiguous block 4 that is connected with approximate zigzag ruler shape, the double end contiguous block 4 of zigzag ruler shape is by upper, lower inlaying grafting part 401, 402 compositions, in correspondence, lower inlaying grafting part 401, on 402 seat board 2 and the sideslip frame 3 of every side, be respectively arranged with, lower connecting base 201, 301, double end contiguous block 4 is by upper, lower inlaying grafting part 401, 402 correspondences and upper connecting base 201 and lower connecting base 301 are with grafting buckle form, seat board 2 and both sides balladeur train 3 are connected and fixed and form entirety, upper by double end contiguous block 4, lower inlaying grafting part 401, 402 seat board 2 and both sides balladeur train 3 are to removable is to connect into entirety, it is simple in structure, rationally, connect with grafting buckle form, its installation or removal are quick, convenient, coordinate and install without other accessory tools, the profile of double end contiguous block 4 is arranged to approximate zigzag ruler shape, meet sled force request in use, can meet the intensity index that TUV detects completely, have again, due to the double end contiguous block 4 of zigzag ruler shape and be mated upper, lower connecting base 201, 301 unique texture combination, effectively eliminate or dispersion sled internal stress or other impulsive forces in use, so each part is low to the selection requirements of material, can select various engineering plastics or metal manufacture, particularly select engineering plastics, not only effectively alleviate Product organization weight, more can effectively reduce production costs, the sled cost 1/5th to 1/4th of comparable prior art.

As more particular embodiment, between the sideslip frame 3 of described every side and seat board 2, be forward and backward shape and be connected with two double end contiguous blocks 4, the corresponding seat board 2 of two double end contiguous blocks 4 and the sideslip frame 3 of every side are extended with respectively two upper and lower Connection Blocks 201,301, and upper connecting base 201 and lower connecting base 301 are separately positioned on seat board 202 both sides, 2 bottom surface and sideslip frame 3 medial surfaces 302; Every side arranges two double end contiguous blocks 4, makes product integral structure more stable and firm.

Described upper connecting base 201 is all formed in one with the sideslip frame 3 of every side with seat board 2, lower connecting base 301; Upper and lower Connection Block 201,301 is manufactured moulding by the integral formula of Design of Dies, and effectively improve and be subject to force intensity, and without increasing post-production operation and tooling cost.

On described, lower connecting base 201, in 301, offer with upper, lower inlaying grafting part 401, it is upper that 402 grafting coordinate, lower grafting chamber 201-1, 301-1, on, lower grafting chamber 201-1, 301-1 outside is extended with, lower inserting groove seat 201-2, 301-2, on, lower inserting groove seat 201-2, on 301-2, be provided with multiple and upper, lower grafting chamber 201-1, it is upper that 301-1 communicates, lower inserting groove 201-2-1, 301-2-1, on, lower inlaying grafting part 401, inner opposite angle between 402 is connected with the subtriangular grafting gusset 403 of polylith, and grafting gusset 403 is by upper, lower diagonal angle plate 403-1, 403-2 is respectively with upper, lower inserting groove 201-2-1, the 301-2-1 cooperation of pegging graft, on, lower grafting chamber 201-1, a left side of 301-1, right both sides have, lower buckle passage 201-3, 301-3, on, lower buckle passage 201-3, 301-3 extending end is provided with, lower limited bayonet 201-3-1, 301-3-1, in correspondence, lower buckle passage 201-3, 301-3's is upper, lower inlaying grafting part 401, a left side of 402, right both sides are provided with, lower Elastic buckle support arm 404, 405, on, lower Elastic buckle support arm 404, 405 extending ends are provided with upper, lower limited bayonet 201-3-1, the location dop 404-1 that 301-3-1 is fastened, 405-1, on, lower inlaying grafting part 401, 402 peg graft on, lower grafting chamber 201-1, in 301-1, make the upper of gusset 403 of pegging graft, lower diagonal angle plate 403-1, 403-2 and upper, lower inserting groove 201-2-1, 301-2-1, on, lower Elastic buckle support arm 404, 405 with upper, lower buckle passage 201-3, the 301-3 cooperation of pegging graft respectively, and by upper, lower location dop 404-1, 405-1 is buckled in, lower limited bayonet 201-3-1, end face 201-3-2 outside 301-3-1, 301-3-2, makes, lower inlaying grafting part 401, 402 with upper, lower connecting base 201, 301 are dismountable affixed, and seat board 2 and both sides balladeur train 3 are connected into entirety, subtriangular grafting gusset 403 is by upper, lower inlaying grafting part 401, 402 connect into entirety, form the double end contiguous block 4 of approximate zigzag ruler shape, grafting gusset 403 had both completed inserting function, utilize 3 principles of determining a plane simultaneously, and the high principle of triangle stability under loading, make double end contiguous block 4 not yielding, force-applied intensity is large, save material, moreover, on, lower inlaying grafting part 401, 402 both sides be respectively equipped with locking snapping use upper, lower Elastic buckle support arm 404, 405, upper by extending end, lower location dop 404-1, 405-1 is buckled in, lower limited bayonet 201-3-1, end face 201-3-2 outside 301-3-1, 301-3-2, in the time inserting use, on, lower location dop 404-1, 405-1 extends to, lower limited bayonet 201-3-1, after 301-3-1, auto lock snaps onto outside end face 201-3-2, 301-3-2, in the time that dismounting separates, only need inwardly exert pressure the upper location dop 404-1 of both sides or lower location dop 405-1 simultaneously, makes in location dop 404-1 or the dop 405-1 disengaging of lower location, lower limited bayonet 201-3-1, 301-3-1, then by upper, lower inlaying grafting part 401, 402 by upper, lower grafting chamber 201-1, 301-1 extracts out, completes the split of seat board 2 and sideslip frame 3, and it is simple in structure, rationally, easy to use, dismounting is quick, saves parking space.

Every grafting gusset 403 between the upper and lower Plug Division 401,402 of described connection is provided with grafting inclined-plane 403-3, and corresponding upper and lower inserting groove seat 201-2,301-2 bottom are provided with the upper and lower inclination back plate 201-2-2, the 301-2-2 that offset with the inclined-plane 403-3 that pegs graft; The setting of grafting inclined-plane 403-3, the use of not only having saved material, and more can facilitate upper and lower Plug Division 401,402 can insert along upper and lower inclination back plate 201-2-1,301-2-1 accurately and rapidly at every turn, simple and reasonable for structure, practical.

Described grafting inclined-plane 403-3 is plane, and corresponding upper and lower inclination back plate 201-2-2,301-2-2 are arranged to plane; Grafting inclined-plane 403-3 is plane, can bear larger internal stress.

Sideslip frame 3 front ends of described every side are provided with acclivitous handrail handle 303; Handrail handle 303 can person easy to use be firmly grasped sled in use, avoids being dished out outside sled because of inertia.

Sideslip frame 3 medial surfaces 302 of described seat board 2 bottom surfaces 202 and every side are respectively equipped with multiple crisscross reinforcement gusset 202-1,302-1; Strengthen the bulk strength that gusset 202-1,302-1 can effectively strengthen seat board 2 and sideslip frame 3, increase the service life.

Sideslip frame 3 end faces of described lower connecting base 301 tops have grafting breach 304, upper Plug Division 401 end faces of corresponding grafting breach 304 are provided with boss 406, the lower inlaying grafting part 402 of double end contiguous block 4 is pegged graft after lower connecting base 301, boss 406 is placed in grafting breach 304, and boss 406 end faces and sideslip frame 3 end faces are in same plane; Grafting breach 304 has been filled up in the setting of boss 406, makes product overall appearance unaffected, is that appearance preservation is smooth, the lines flow smoothly, it is strong to arrange sense.

The extending end of described upper and lower grafting chamber 201-1,301-1 is provided with peg graft outlet 201-1-1,301-1-1, seat board 2 bottom surfaces 202 and sideslip frame 3 medial surfaces 302 near peg graft outlet 201-1-1,301-1-1 are provided with upper and lower spacing block 203,303, upper and lower Plug Division 401,402 is coordinated with upper and lower grafting chamber 201-1,301-1 after grafting, and extending end 401-1, the 402-1 of upper and lower Plug Division 401,402 and upper and lower spacing block 203,303 offset; Upper and lower spacing block 203,303 can facilitate the Fast Installation location of upper and lower Plug Division 401-402 and upper and lower grafting chamber 201-1,301-1.

As another embodiment of double end contiguous block, described grafting inclined-plane 403-3 is circular-arc, and as shown in Figure 9, corresponding upper and lower inclination back plate is arranged to circular-arc; Grafting inclined-plane 403-3 is circular-arc, can bear equally larger internal stress.

Above-described specific embodiment, is only preferred embodiment of the present invention, and the equivalent arrangements of such as doing according to the present patent application the scope of the claims, all should be technology of the present invention and contain.

Claims

1. a removable compound type sled, comprise seat board (2) and be connected to the sideslip frame (3) of seat board (2) both sides, it is characterized in that, between the sideslip frame (3) of every side and seat board (2), be the removable double end contiguous block (4) that is connected with approximate zigzag ruler shape, the double end contiguous block (4) of zigzag ruler shape is by upper, lower inlaying grafting part (401, 402) composition, in correspondence, lower inlaying grafting part (401, 402) on seat board (2) and the sideslip frame (3) of every side, be respectively arranged with, lower connecting base (201, 301), double end contiguous block (4) is by upper, lower inlaying grafting part (401, 402) correspondence and upper connecting base (201) and lower connecting base (301) are with the buckle form of pegging graft, seat board (2) and both sides balladeur train (3) are connected and fixed and form entirety,

On described, lower connecting base (201, 301) in, offer with upper, lower inlaying grafting part (401, 402) that pegs graft and coordinate is upper, lower grafting chamber (201-1, 301-1), on, lower grafting chamber (201-1, 301-1) outside is extended with, lower inserting groove seat (201-2, 301-2), on, lower inserting groove seat (201-2, 301-2), be provided with multiple and upper, lower grafting chamber (201-1, what 301-1) communicate is upper, lower inserting groove (201-2-1, 301-2-1), on, lower inlaying grafting part (401, 402) inner opposite angle between is connected with the subtriangular grafting gusset (403) of polylith, and grafting gusset (403) is by upper, lower diagonal angle plate (403-1, 403-2) respectively with upper, lower inserting groove (201-2-1, 301-2-1) peg graft and coordinate, on, lower grafting chamber (201-1, left side 301-1), right both sides have, lower buckle passage (201-3, 301-3), on, lower buckle passage (201-3, 301-3) extending end is provided with, lower limited bayonet (201-3-1, 301-3-1), in correspondence, lower buckle passage (201-3, 301-3) upper, lower inlaying grafting part (401, 402) a left side, right both sides are provided with, lower Elastic buckle support arm (404, 405), lower Elastic buckle support arm (404, 405) extending end is provided with upper, lower limited bayonet (201-3-1, location dop (404-1 301-3-1) being fastened, 405-1), on, lower inlaying grafting part (401, 402) on pegging graft, lower grafting chamber (201-1, 301-1), make the upper of gusset (403) of pegging graft, lower diagonal angle plate (403-1, 403-2) with upper, lower inserting groove (201-2-1, 301-2-1), on, lower Elastic buckle support arm (404, 405) with upper, lower buckle passage (201-3, 301-3) peg graft and coordinate respectively, and by upper, lower location dop (404-1, 405-1) be buckled in, lower limited bayonet (201-3-1, 301-3-1) outside end face (201-3-2, 301-3-2), make, lower inlaying grafting part (401, 402) with upper, lower connecting base (201, 301) be dismountable affixed, seat board (2) and both sides balladeur train (3) are connected into entirety.

2. removable compound type sled according to claim 1, is characterized in that; Between the sideslip frame (3) of described every side and seat board (2), be forward and backward shape and be connected with two double end contiguous blocks (4), the seat board (2) of corresponding two double end contiguous blocks (4) and the sideslip frame (3) of every side are extended with respectively two upper and lower Connection Blocks (201,301), and upper connecting base (201) and lower connecting base (301) are separately positioned on (202) both sides, seat board (2) bottom surface and sideslip frame (3) medial surface (302).

3. according to removable compound type sled described in claim 1 or 2, it is characterized in that; Described upper connecting base (201) is formed in one with the sideslip frame (3) of every side with seat board (2), lower connecting base (301).

4. removable compound type sled according to claim 1, it is characterized in that, every grafting gusset (403) between the upper and lower Plug Division of described connection (401,402) is provided with grafting inclined-plane (403-3), and corresponding upper and lower inserting groove seat (201-2,301-2) bottom is provided with the upper and lower inclination back plate (201-2-2,301-2-2) offseting with the inclined-plane of pegging graft (403-3).

5. removable compound type sled according to claim 4, is characterized in that, described grafting inclined-plane (403-3) is plane or circular-arc, and corresponding upper and lower inclination back plate (201-2-2,301-2-2) is arranged to plane or circular-arc.

6. removable compound type sled according to claim 1, is characterized in that, sideslip frame (3) front end of described every side is provided with acclivitous handrail handle (303).

7. removable compound type sled according to claim 1, is characterized in that, sideslip frame (3) medial surface (302) of described seat board (2) bottom surface (202) and every side is respectively equipped with multiple crisscross reinforcement gussets (202-1,302-1).

8. removable compound type sled according to claim 1, it is characterized in that, sideslip frame (3) end face of described lower connecting base (301) top has grafting breach (304), upper Plug Division (401) end face of corresponding grafting breach (304) is provided with boss (406), the lower inlaying grafting part (402) of double end contiguous block (4) is pegged graft after lower connecting base (301), boss (406) is placed in grafting breach (304), and boss (406) end face and sideslip frame (3) end face are in same plane.

9. removable compound type sled according to claim 1, it is characterized in that, on described, lower grafting chamber (201-1, extending end 301-1) is provided with the outlet (201-1-1 that pegs graft, 301-1-1), near the outlet (201-1-1 that pegs graft, seat board (2) bottom surface (202) and sideslip frame (3) medial surface (302) 301-1-1) are provided with, lower limit block (203, 305), make, lower inlaying grafting part (401, 402) with upper, lower grafting chamber (201-1, 301-1) coordinate after grafting, on, lower inlaying grafting part (401, 402) extending end (401-1, 402-1) with upper, lower limit block (203, 305) offset.