CN110406444B

CN110406444B - Neck pillow structure

Info

Publication number: CN110406444B
Application number: CN201910685064.2A
Authority: CN
Inventors: 何日中
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-23
Filing date: 2019-07-27
Publication date: 2024-04-30
Anticipated expiration: 2039-07-27
Also published as: CN110406444A; CN210760372U

Abstract

The invention discloses a neck pillow structure, which relates to the technical field of automobile articles, and is technically characterized in that: including the neck pillow body, be connected with the gooseneck on the neck pillow body, the one end that the neck pillow body was kept away from to the gooseneck is provided with the mounting bracket that is used for the installation fixed, still is provided with the support frame on the neck pillow body, the gooseneck is connected on the support frame to the neck pillow body supports. The gooseneck pipe of the neck pillow structure can be bent towards any direction, and can meet various requirements of users on the position of the neck pillow body, so that the optimal comfort level is achieved, the adjustment is convenient, and the actual use requirement is met. Through setting up rotation seat and rotation portion, the user can adjust the angle of neck pillow body through adjusting the subassembly to further enlarge the adjustable range of this neck pillow structure; the first clamping piece and the second clamping piece are arranged, so that the mounting rack can be adapted to connecting rods with different distances on different seats; through setting up the screw thread section, the dismouting of gooseneck and mounting bracket, support frame is all comparatively convenient.

Description

Neck pillow structure

Technical Field

The invention relates to the technical field of automobile supplies, in particular to a neck pillow structure.

Background

A neck pillow, which is a pillow for supporting the neck of a user. In an automobile, a neck pillow is commonly used for being fixed on two connecting rods between a backrest and a headrest of a seat, and fills a space between the neck of a user and the seat, so that comfort can be improved.

As shown in FIG. 1, the existing seat and neck rest is composed of a backrest and a headrest, wherein the backrest and the headrest are connected by two connecting rods, and the headrest can adjust the distance between the headrest and the backrest in a sliding manner on the connecting rods. The neck pillow comprises a neck pillow body 1, two fasteners 10 and two connecting pieces 101, wherein the two fasteners 10 are connected with the neck pillow body 1 through the two connecting pieces 101, and the fasteners 10 are fixedly clamped with connecting rods of the seat through clamping grooves, so that the neck pillow body 1 is fixed on the seat.

The neck pillow of the other existing form is generally fixed outside two connecting rods between the backrest and the headrest through elastic belts or magic tapes.

The prior art solution described above has the following drawbacks: after the neck pillow is arranged on the seat, the position of the neck pillow is fixed, but the heights, sitting postures and neck ache positions of users are possibly different, and when people need to support the needed positions, the existing neck pillow is difficult to adjust according to the actual demands of the users.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a neck pillow structure which has the advantage that the position of a neck pillow body is convenient to adjust.

The technical aim of the invention is realized by the following technical scheme: the utility model provides a neck pillow structure, includes the neck pillow body, be connected with the gooseneck on the neck pillow body, the one end that the neck pillow body was kept away from to the gooseneck is provided with the mounting bracket that is used for the installation fixed.

Through above-mentioned technical scheme, during the use, earlier with mounting bracket fixed connection on the connecting rod of seat for neck pillow body is towards the front end of seat, owing to connect through the gooseneck, can adjust the angle and the position of neck pillow body through buckling the gooseneck, because when the people sits on the seat, the dynamics of people's neck on the neck pillow body is not big, and the intensity of gooseneck is enough to hold the people and leans on the neck pillow body. Through this neck pillow structure, the user can drive the gooseneck hard crooked towards arbitrary direction, can satisfy the user to the various demands of neck pillow body position to reach best comfort level, and the position adjustment of neck pillow body is very convenient, satisfies the needs of in-service use.

Preferably, the neck pillow body is further provided with a support frame, and the gooseneck is connected to the support frame to support the neck pillow body.

Through above-mentioned technical scheme, the support frame can support one side that neck pillow body is close to the mounting bracket, forms the support to the neck pillow body through the support frame, has reduced the people and has leaned on the neck pillow body and lead to the circumstances that neck pillow body warp, and the gooseneck is connected on the support frame simultaneously for the connection of gooseneck is more firm.

Preferably, the support frame is the setting of C shape, the gooseneck is provided with two, and every the gooseneck is connected in the both sides position of mounting bracket and support frame respectively.

Through above-mentioned technical scheme, the neck pillow body is half surrounded by the support frame of C shape and forms the support to make the structure of neck pillow body more stable, carry out both sides fixedly through two goosenecks in addition, make the atress of neck pillow body both sides more even, it is more stable when the neck pillow body uses.

Preferably, the support frame is further provided with an adjusting assembly, and the gooseneck is in rotary connection with the support frame through the adjusting assembly.

Through above-mentioned technical scheme, the user can be through the angle of adjusting component adjustment neck pillow body to further enlarge this neck pillow structure's adjustable scope.

Preferably, the adjusting component comprises a rotating part arranged on the support frame and a rotating seat connected to the gooseneck and correspondingly matched with the rotating part on the support frame in a rotating way.

Through above-mentioned technical scheme, set up rotation portion and rotation seat, the support frame can rotate through the relative gooseneck of the cooperation of rotation portion and rotation seat for the neck pillow body on the support frame can rotate relatively with the gooseneck.

Preferably, the one end that rotates the seat and is close to the rotation portion has offered the circular slot, a plurality of spacing grooves have evenly been seted up along circumference to the circular slot lateral wall, the spacing groove is the circular arc groove setting, just the spacing groove is smooth transition setting with the circular slot lateral wall, rotation portion rotate connect in the circular slot, the outside of rotation portion is provided with and is used for the embedding the stopper that the spacing groove was fixed a position, the stopper pass through the elastic rod with rotation portion connects.

Through above-mentioned technical scheme, when the angle of neck pillow body needs to be adjusted, through rotating the rotation seat for stopper on the rotation portion deviate from current spacing inslot and imbed another spacing inslot and fix a position, thereby reach the regulation to neck pillow body angle. The limiting block and the limiting groove can generate a limiting effect, and a person can drive the rotating seat and the rotating part to rotate only by torsion with a certain size, so that the rotating seat and the rotating part are not easy to spontaneously rotate.

Preferably, the through hole is coaxially formed in the rotating portion, the rotating seat is correspondingly provided with a rotating assembly connected with the through hole in the rotating portion in a rotating mode, the rotating assembly comprises a plurality of elastic connecting portions coaxially distributed in the rotating seat, limiting portions arranged on the elastic connecting portions and away from one end of the rotating seat, and after the elastic connecting portions correspondingly penetrate through the through hole, the limiting portions are used for abutting against the other side of the rotating portion to limit the elastic connecting portions to deviate from the through hole.

Through above-mentioned technical scheme, rotate the seat and rotate the portion through rotating the subassembly and rotate and link to each other, when needs are assembled to rotating seat and rotation portion, can press spacing portion and be close to each other for distance between the spacing portion is less than the through-hole, then makes spacing portion pass the through-hole, and spacing portion passes behind the through-hole, and spacing portion is kept away from each other under the elasticity effect of elastic connection portion, makes one side that spacing portion is close to rotation portion support tightly and forms spacingly on rotation portion. Through setting up rotating assembly, the installation of gooseneck and support frame is comparatively convenient, and both are difficult for breaking away from voluntarily after the installation is accomplished.

Preferably, thread sections are arranged at two ends of the gooseneck, and the gooseneck is screwed and fixed through nuts after penetrating through the supporting frame and the mounting frame.

Through the technical scheme, the gooseneck is fixed through the nut, so that the gooseneck is more convenient to install or replace.

Preferably, the support frame and one side of the mounting frame far away from the gooseneck are provided with mounting grooves for mounting nuts, and plugs for sealing the notches of the mounting grooves are arranged on the mounting grooves.

By the technical scheme, the sealing performance can be further enhanced through the plug, dust and the like are reduced from entering the mounting groove, and the cleaning is facilitated; in addition, the mounting groove and the plug hide the nut, so that the attractive appearance is improved, and the collision of the nut or the thread section in use is reduced; the plug can also limit the nut from spontaneously separating from the mounting groove, so that the mounting stability of the gooseneck and the support frame (or the mounting frame) is improved.

Preferably, the mounting frame comprises a first clamping piece and a second clamping piece, the first clamping piece comprises two parallel first clamping plates and a first connecting part connected with one end of the same side of the two first clamping plates, and the second clamping piece comprises two parallel second clamping plates and a second connecting part connected with one end of the same side of the two second clamping plates; the outside concatenation that second fastener was located to first fastener cover forms the annular, two first cardboard opposite side all is provided with first latch, first latch sets up towards first connecting portion slope, two one side that the second cardboard deviates from each other is provided with respectively with first latch looks embedded second latch, second latch sets up towards second connecting portion slope.

Through above-mentioned technical scheme, inlay mutually through first latch and second latch for first fastener and second fastener are together fixed, through the connection of first fastener and second fastener, make the mounting bracket can install the connecting rod of seat on fixed. After first fastener and second fastener are close to each other, first fastener and second fastener have been restricted in the cooperation of first latch and second latch and kept away from each other, and this mounting bracket can adapt to the different connecting rod of interval difference on the different seats.

In summary, compared with the prior art, the invention has the following beneficial effects:

1. By arranging the gooseneck, the position of the neck pillow body can be adjusted in any direction, and the neck pillow is convenient to adjust and meets the requirement of actual use;

2. Through setting up rotation seat and rotation portion, the user can adjust the angle of neck pillow body through adjusting the subassembly to further enlarge the adjustable range of this neck pillow structure;

3. the first clamping piece and the second clamping piece are arranged, so that the mounting rack can be adapted to connecting rods with different distances on different seats;

4. Through setting up the screw thread section, the dismouting of gooseneck and mounting bracket, support frame is all comparatively convenient.

Drawings

FIG. 1 is a schematic view of a conventional seat and neck rest;

FIG. 2 is an overall schematic view of a neck pillow structure according to an embodiment;

FIG. 3 is a schematic view of a partial explosion of an embodiment;

FIG. 4 is a cross-sectional view of a mounting bracket of an embodiment;

Fig. 5 is an exploded view of an adjustment assembly of an embodiment.

Reference numerals: 1. a neck pillow body; 10. a fastener; 101. a connecting piece; 2. a gooseneck; 3. a mounting frame; 31. a first clamping piece; 311. a first clamping plate; 312. a first connection portion; 32. a second clamping piece; 321. a second clamping plate; 322. a second connecting portion; 5. a first latch; 6. a second latch; 7. a support frame; 8. an adjustment assembly; 81. a rotating seat; 82. a rotating part; 9. a circular groove; 91. a limit groove; 11. a limiting block; 12. an elastic rod; 13. a through hole; 14. a rotating assembly; 141. an elastic connection part; 142. a limit part; 15. a protective sleeve; 16. a threaded section; 17. a nut; 18. a mounting groove; 19. a plug; 20. notch groove.

Detailed Description

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

As shown in fig. 2, a neck pillow structure includes a neck pillow body 1, a gooseneck 2, and a mounting bracket 3. The gooseneck 2 is also called a serpentine pipe or a metal shaping hose, the gooseneck 2 is a metal piece which can be bent arbitrarily and has a certain direction, and the gooseneck 2 is commonly used as a desk lamp hose. The gooseneck 2 is provided with two, and two gooseneck 2 are used for connecting the neck pillow body 1 and the mounting frame 3.

During the use, earlier with mounting bracket 3 fixed connection on the connecting rod of seat for neck pillow body 1 sets up towards the front end of seat, owing to connect through gooseneck 2, can adjust the angle and the position of neck pillow body 1 through buckling gooseneck 2, because when the people sits on the seat, the driver when sitting on very much, the dynamics of people's neck on neck pillow body 1 is not big, and the intensity of gooseneck 2 is enough to support the people and leans on the condition of neck pillow body 1. In practical use, the thicker gooseneck 2 can be selected according to practical situations to increase the supporting force.

The mounting frame 3 can be fixed through rope binding, can also be fixed through magic tape, and can also be fixed through the corresponding card of draw-in groove to the connecting rod of seat. In this embodiment, as shown in fig. 2 and 4, the mounting frame 3 includes a first clamping member 31 and a second clamping member 32, and the first clamping member 31 is sleeved on the outer side of the second clamping member 32 to form a ring shape. The first clamping piece 31 comprises two parallel first clamping plates 311 and a first connecting part 312 connected with one end of the same side of the two first clamping plates 311; the second clamping piece 32 comprises two parallel second clamping plates 321 and a second connecting part 322 connected with one end of the same side of the two second clamping plates 321. The first connecting portion 312 and the second connecting portion 322 are all in a circular arc shape, and when the two first clamping plates 311 or the two second clamping plates 321 are stressed to be close to each other or far from each other, the corresponding first connecting portion 312 or second connecting portion 322 can generate elastic deformation correspondingly.

The opposite sides of the two first clamping plates 311 are provided with first clamping teeth 5, the first clamping teeth 5 are obliquely arranged towards the first connecting portion 312, one side, close to the first connecting portion 312, of the first clamping teeth 5 is perpendicular to the first clamping plates 311, and one side, far away from the first connecting portion 312, of the first clamping teeth 5 is obliquely arranged towards the direction far away from the first connecting portion 312. Two second cardboard 321 face away from each other one side all be provided with first latch 5 mutually inlayed second latch 6, second latch 6 is towards second connecting portion 322 slope setting, specifically second latch 6 is close to one side perpendicular to second cardboard 321 of second connecting portion 322, and second latch 6 is kept away from one side of second connecting portion 322 and is kept away from the direction slope of second connecting portion 322.

When the mounting frame 3 needs to be mounted on two connecting rods of a seat, the first clamping piece 31 and the second clamping piece 32 are sleeved from two opposite sides of the two connecting rods respectively, so that the two connecting rods are located in an annular shape formed by the first clamping piece 31 and the second clamping piece 32, then the first clamping piece 31 and the second clamping piece 32 are pressed by external force to enable the first clamping piece 31 and the second clamping piece 32 to be close to each other, and at the moment, the two second clamping plates 321 can deform along the elastic force of the second connecting part 322 under the action of inclined surfaces corresponding to the first clamping teeth 5 and the second clamping teeth 6, so that the two second clamping plates 321 can be close to each other; simultaneously, the two first clamping plates 311 can deform along the elastic force of the first connecting portion 312, so that the first clamping member 31 and the second clamping member 32 are close to each other, and after the first connecting portion 312 and the second connecting portion 322 respectively abut against the two connecting rods of the seat, the first clamping member 31 and the second clamping member 32 cannot be far away under the limiting effect of the clamping teeth corresponding to one side of the vertical first clamping plate 311 and the second clamping plate 321.

When the mounting frame 3 needs to be disassembled, the outer sides of the two second clamping plates 321 need to be pressed, the second clamping plates 321 and the first clamping plates 311 are separated, meanwhile, the first clamping teeth 5 and the second clamping teeth 6 are not clamped, the first clamping piece 31 and the second clamping piece 32 can be directly driven to be separated from each other, and the first clamping piece 31 and the second clamping piece 32 can be also separated by vertically staggering.

As shown in fig. 3, the neck pillow body 1 is further provided with a support frame 7, the support frame 7 is in a C-shaped configuration, the rear end face of the neck pillow body 1 is clamped into the support frame 7, and the front end face of the neck pillow body 1 protrudes out of the support frame 7. In actual use, the support frame 7 can also be arranged in a flat plate shape, and the rear end face of the neck pillow body 1 is directly fixed on the plane of the support frame 7. The support frame 7 is mainly used for supporting the neck pillow body 1, prevents the neck pillow body 1 from being deformed by pressing, and ensures that the neck pillow body 1 has a good bearing effect.

As shown in fig. 2 and 3, two goosenecks 2 are respectively connected to both side positions in the longitudinal direction of the mounting bracket 3 and the supporting frame 7. The support frame 7 is further provided with adjusting assemblies 8, the adjusting assemblies 8 are provided with two goosenecks 2 and are correspondingly connected with the two goosenecks 2 respectively, and the goosenecks 2 are rotatably connected with the support frame 7 through the adjusting assemblies 8.

As shown in fig. 5, each adjusting assembly 8 comprises a rotating part 82 arranged on the supporting frame 7, and a rotating seat 81 connected to the gooseneck 2, wherein the rotating seat 81 is in rotating fit with the corresponding rotating part 82 on the supporting frame 7. In actual use, the rotary seat 81 and the rotary portion 82 may be replaced.

The round groove 9 has been seted up to the one end that rotates the seat 81 and is close to the rotation portion 82, and a plurality of spacing grooves 91 have evenly been seted up along circumference to round groove 9 lateral wall, and spacing groove 91 is the circular arc groove setting, and spacing groove 91 is the smooth transition setting with round groove 9 lateral wall. The rotating portion 82 is rotatably connected in the circular groove 9, the rotating portion 82 further comprises limiting blocks 11, the limiting blocks 11 are arranged on the outer radial side of the rotating portion 82, and the limiting blocks 11 are uniformly arranged in two along the circumferential direction of the rotating portion 82. Each stopper 11 is connected to the rotating portion 82 through an elastic lever 12, respectively. In this embodiment, the rotating portion 82 is circularly disposed, and the elastic rod 12 is formed by forming an inclined notch 20 on the rotating portion 82. The side of the limiting block 11 away from the rotating portion 82 is in a circular arc shape, and the limiting block 11 can be used for being embedded into the limiting groove 91 for positioning.

The rotating part 82 is coaxially provided with a through hole 13, and the rotating seat 81 is correspondingly provided with a rotating assembly 14 which is rotationally connected with the through hole 13 on the rotating part 82. The rotating assembly 14 includes a plurality of elastic connecting portions 141 coaxially distributed on the rotating base 81, and a limiting portion 142 disposed at one end of the elastic connecting portion 141 away from the rotating base 81. The elastic connection portion 141 is coaxially disposed with the rotation axis of the rotation portion 82, and the limiting portion 142 extends in a direction away from the rotation axis, and when the elastic connection portion 141 is correspondingly inserted into the through hole 13, the limiting portion 142 is used for abutting against the other side of the rotation portion 82, and the limiting portion 142 limits the elastic connection portion 141 from being separated from the through hole 13.

When the rotating seat 81 and the rotating portion 82 need to be assembled, the limiting portions 142 can be pressed to be close to each other, so that the distance between the limiting portions 142 is smaller than that of the through holes 13, then the limiting portions 142 penetrate through the through holes 13, after the limiting portions 142 penetrate through the through holes 13, the limiting portions 142 are far away from each other under the action of the elastic force of the elastic connecting portions 141, and one side, close to the rotating portion 82, of the limiting portions 142 abuts against the rotating portion 82 to form limiting. After the installation of the rotating seat 81 and the rotating part 82 is completed, a pretightening force is arranged between the limiting block 11 and the wall of the limiting groove 91, and a person can drive the rotating seat 81 and the rotating part 82 to rotate by a certain torque force.

As shown in FIG. 3, the gooseneck 2 is made of stainless steel, the gooseneck 2 is guaranteed to have enough bending resistance according to the diameter, the gooseneck 2 further comprises a protective sleeve 15 sleeved on the outer side wall of the gooseneck 2, the protective sleeve 15 can be a rubber sleeve or a cloth sleeve, the gooseneck 2 is coated through the protective sleeve 15, and the cold feeling of the gooseneck 2 in direct contact with a human body is reduced. In addition, the protective sleeve 15 can further protect the gooseneck 2. Both ends of the gooseneck 2 are provided with thread sections 16, and the gooseneck 2 is screwed and fixed by nuts 17 after penetrating through the supporting frame 7 and the mounting frame 3. The support frame 7 and the one side of the mounting bracket 3 far away from the gooseneck 2 are provided with mounting grooves 18 for mounting the nuts 17, the shape of the mounting grooves 18 corresponds to the nuts 17, the nuts 17 cannot rotate in the mounting grooves 18, the mounting grooves 18 are provided with plugs 19 for closing the notches of the mounting grooves 18, and the plugs 19 can also limit the nuts 17 to be spontaneously separated from the mounting grooves.

The using method of the neck pillow structure comprises the following steps: the installation frame 3 is firstly installed on a connecting rod of the seat, after the first clamping piece 31 and the second clamping piece 32 are installed on the connecting rod, a person can drive the headrest of the seat to move towards the backrest direction, so that the headrest and the backrest clamp the first clamping piece 31 and the second clamping piece 32 between the headrest and the backrest to limit the first clamping piece 31 and the second clamping piece 32 to be separated along the length direction of the connecting rod. And then the neck pillow body 1 is connected to the gooseneck 2 through the supporting frame 7, so that the installation of the neck pillow structure is completed.

The user can adjust the position of neck pillow body 1 through the mode of buckling gooseneck 2 according to self needs, and gooseneck 2 can be crooked towards arbitrary direction, can satisfy the various demands of user to neck pillow body 1 position to reach best comfort level. In addition, the user can further adjust the angle of the neck pillow body 1 through the adjusting component 8 so as to further enlarge the adjustable range of the neck pillow structure; in a normal use state, the gooseneck 2 is not easy to bend spontaneously, and the rotating seat 81 and the rotating part 82 are not easy to rotate spontaneously.

The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.

Claims

1. The utility model provides a neck pillow structure, includes neck pillow body (1), its characterized in that: the neck pillow is characterized in that the neck pillow body (1) is connected with a gooseneck (2), and one end, far away from the neck pillow body (1), of the gooseneck (2) is provided with a mounting rack (3) for mounting and fixing;

The neck pillow is characterized in that a support frame (7) is further arranged on the neck pillow body (1), and the gooseneck (2) is connected to the support frame (7) to support the neck pillow body (1);

the support frames (7) are arranged in a C shape, two goosenecks (2) are arranged, and each gooseneck (2) is respectively connected to the two sides of the mounting frame (3) and the support frames (7);

The support frame (7) further comprises an adjusting assembly (8), and the gooseneck (2) is rotatably connected with the support frame (7) through the adjusting assembly (8);

The adjusting component (8) comprises a rotating part (82) arranged on the support frame (7) and a rotating seat (81) connected to the gooseneck (2) and correspondingly matched with the rotating part (82) on the support frame (7) in a rotating way;

The utility model discloses a rotary table, including round slot (9) is offered to one end that rotates seat (81) and is close to rotation portion (82), a plurality of spacing grooves (91) have evenly been offered along circumference to round slot (9) lateral wall, spacing groove (91) are circular arc groove setting, just spacing groove (91) are smooth transition setting with round slot (9) lateral wall, rotation portion (82) rotate connect in round slot (9), the outside of rotation portion (82) is provided with and is used for the embedding stopper (11) that spacing groove (91) were fixed a position, stopper (11) pass through elastic rod (12) with rotation portion (82) are connected.

2. A neck pillow structure according to claim 1, characterized in that: through-hole (13) have been seted up coaxially on rotating portion (82), rotate seat (81) correspond be provided with rotate rotating assembly (14) that through-hole (13) rotated on rotating portion (82) are connected, rotate assembly (14) including a plurality of coaxial distribution in elastic connection portion (141) of rotating seat (81), set up in elastic connection portion (141) keep away from spacing portion (142) of rotating seat (81) one end, after elastic connection portion (141) correspond to wear to establish through-hole (13), spacing portion (142) are used for contradicting in opposite side restriction elastic connection portion (141) of rotating portion (82) deviate from through-hole (13).

3. A neck pillow structure according to claim 1, characterized in that: the two ends of the gooseneck (2) are provided with threaded sections (16), and the gooseneck (2) is screwed and fixed through nuts (17) after penetrating through the supporting frame (7) and the mounting frame (3).

4. A neck pillow structure according to claim 3, characterized in that: the mounting groove (18) for mounting the nut (17) is formed in one side, far away from the gooseneck (2), of the support frame (7) and the mounting frame (3), and a plug (19) for sealing the notch of the mounting groove (18) is arranged on the mounting groove (18).

5. A neck pillow structure according to any one of claims 1-4, characterized in that: the mounting frame (3) comprises a first clamping piece (31) and a second clamping piece (32), the first clamping piece (31) comprises two parallel first clamping plates (311), a first connecting part (312) connected with one end of the same side of the two first clamping plates (311), and the second clamping piece (32) comprises two parallel second clamping plates (321) and a second connecting part (322) connected with one end of the same side of the two second clamping plates (321);

the outside concatenation that second fastener (32) were located to first fastener (31) cover forms the annular, two first cardboard (311) are relative one side all is provided with first latch (5), first latch (5) are towards first connecting portion (312) slope setting, two one side that second cardboard (321) deviate from each other be provided with respectively with second latch (6) that first latch (5) inlayed, second latch (6) are towards second connecting portion (322) slope setting.