CN217761613U

CN217761613U - Invisible pre-buried structure connecting piece and drawer

Info

Publication number: CN217761613U
Application number: CN202221664347.2U
Authority: CN
Inventors: 刘应章; 王志焕
Original assignee: Kuka Home Co Ltd
Current assignee: Kuka Home Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-08
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a technical field of furniture hardware, in particular to hidden form embedded structure connecting piece and drawer, including the built-in fitting, bail and eccentric nail, be equipped with the spacing hole that is used for placing eccentric nail and the joint hole that is used for the joint bail on the built-in fitting, still be equipped with reverse locking mechanism on the built-in fitting, reverse locking mechanism establishes the bottom in spacing hole, eccentric nail is including rotatory spacing body, the spacing body of anticreep, and establish the eccentric body between rotatory spacing body and the spacing body of anticreep, eccentric nail is through rotatory spacing body and the spacing body joint of anticreep at the both ends in spacing hole, it is protruding to reverse locking mechanism's outside extrusion through rotatory eccentric body, the built-in fitting carries out outside reverse locking through outside bellied reverse locking mechanism. The problem that the hole site that exists when effectual having solved current trinity structural connection explodes the limit easily has also solved eccentric wheel and hole site simultaneously and has exposed the problem outside.

Description

Hidden pre-buried structure connecting piece and drawer

Technical Field

The application relates to the technical field of furniture hardware, in particular to a hidden pre-buried structure connecting piece.

Background

At present, to the drawer, a chair, when the article that wardrobe etc. formed by the combination of polylith panel were assembled, the junction generally adopts the trinity structure or the wood tenon + trinity structure of eccentric wheel + screw rod + built-in fitting to connect the locking, however, adopt the product of trinity structural installation, the lateral surface of eccentric wheel can't be hidden and the hole site exists the phenomenon of bursting side, simultaneously required accessory is in large quantity, for example, the drawer, when adopting trinity structural installation, the trinity eccentric member outside is visual naked state after the installation, and there is the phenomenon of bursting side in the hole site after the eccentric member locking, and the required subassembly of every drawer is many, still produce the problem of unevenness after the installation is accomplished easily, positioning accuracy between two adjacent blocks of panels is low, thereby lead to the whole installation inefficiency, and when adopting trinity + wood structure to install, the problem of relative position precision has been guaranteed, but required accessory further increases, and in case the installation is accomplished, dismantle the increase of the degree of difficulty doubly how much, when the assembly mistake appears and need the adjustment degree of difficulty is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the hole site is easy to explode and limit in the existing connecting piece can not be hidden and the installation process, the application provides a hidden pre-buried structure connecting piece.

The application provides a pair of pre-buried structural connection spare of hidden form adopts following technical scheme:

the utility model provides a hidden form embedded structure connecting piece, includes built-in fitting, bail and eccentric nail, be equipped with on the built-in fitting and be used for placing the spacing hole of eccentric nail with be used for the joint hole of bail, still be equipped with reverse locking mechanism on the built-in fitting, reverse locking mechanism establishes the bottom in spacing hole, eccentric nail is including rotatory spacing body, anticreep spacing body and establishing rotatory spacing body with the eccentric body between the anticreep spacing body, eccentric nail passes through rotatory spacing body with the spacing body joint of anticreep is in the both ends in spacing hole, through rotating the eccentric body is right reverse locking mechanism outwards extrudees the arch, the built-in fitting is through outside bellied reverse locking mechanism carries out outside reverse locking.

Through adopting above-mentioned technical scheme, the eccentric body is spacing to be placed at spacing downthehole through the rotatory spacing body at both ends and the spacing body of anticreep, thereby prevent that eccentric nail from falling out from spacing downthehole through the rotatory spacing body at both ends and the spacing body of anticreep, and adopt the eccentric body structure to drive reverse locking mechanism between the spacing body of rotatory spacing body and the anticreep, when rotating the eccentric body, the eccentric body can both produce different extrusion protruding scope for reverse locking mechanism's different rotation angle, thereby make reverse locking mechanism can realize outwards protruding gradually or the effect of inwards retracting gradually, can both expand the locking to the mounting hole clearance of difference, application scope is wider. The staple bolt is then fixed through locking each other in one end joint goes on in the joint hole to make the product subassembly of installing the built-in fitting when assembling with the product subassembly of installing the staple bolt, only need insert the staple bolt and just can realize that the lock of reciprocal anchorage is dead in the joint hole, it is more convenient to connect, the junction between the product subassembly no longer need set up the eccentric wheel mounting hole, the effectual hole site that exists when having solved current trinity structural connection problem of exploding the limit easily, the exposed outer problem of eccentric wheel and hole site has also been solved simultaneously.

Optionally: the rotary limiting body comprises a cylindrical connecting seat and a limiting block arranged on the connecting seat, the connecting seat extends into the limiting hole, the rotary limiting body rotates through the limiting block, and one end of the limiting hole is limited through the limiting block.

Through adopting the above-mentioned technical scheme, rotatory spacing body comprises columniform connecting seat and stop block, wherein the connecting seat stretches into in the spacing hole, adorn the back through connecting seat and spacing hole, can make whole eccentric nail in spacing downthehole clearance littleer, be difficult for appearing rocking about by a wide margin, and simultaneously, after the terminal surface contact through stopper and spacing hole, the one end that can avoid rotatory spacing body drops spacing downthehole, also can make rotatory spacing body form a rotating part, directly rotate whole eccentric nail through the stopper.

Optionally: the upper end of the limiting hole is provided with a first counter bore, the side wall of the first counter bore is provided with a stop block protruding inwards, the limiting block is arranged in the first counter bore, the limiting block is rotated to touch the stop block and then stops rotating continuously, and the eccentric body is used for positioning the stop block when the reverse locking mechanism is locked or unlocked.

Through adopting above-mentioned technical scheme, can accomodate the stopper through first counter bore, thereby outside protruding structure can not appear when making the stopper install on the built-in fitting, thereby the thickness of whole connecting piece has been reduced, the hole depth degree that makes the erection joint spare can be littleer, the product wall thickness can be thinner, and inwards protruding being formed with the end piece on the lateral wall of first counter bore, the stopper must touch the end piece after rotating along first counter bore, and the end position when one side position of end piece generally is eccentric body to reverse locking mechanism's locking or unblock state, thereby realized locking or quick unblock to eccentric nail through the end piece.

Optionally: the top of connecting seat is equipped with inside sunken drive groove, rotatory spacing body passes through the drive groove rotates.

Through adopting above-mentioned technical scheme, seted up an inside sunken drive groove at the top of connecting seat, the drive groove generally adopts the structure that matches with screwdrivers blade or hexagonal spanner, when rotating eccentric nail, rotates more nimble convenience through the drive groove.

Optionally: reverse locking mechanism sets up including the symmetry the inflation piece of spacing hole bottom, establish the joint in the inflation piece outside is detained, is established the inboard anticreep groove of inflation piece, the joint is detained and is outside protruding structure setting and is in on the inflation piece, adjacent two the inboard width of inflation piece is greater than the minor diameter of eccentric body and be less than the major diameter of eccentric body inserts spacing hole eccentric nail bottom is passed through the spacing body joint of anticreep is in the anticreep inslot.

Through adopting above-mentioned technical scheme, the anticreep spacing body is located the anticreep inslot to the anticreep spacing body one end of avoiding eccentric nail appears falling out the phenomenon. And the width of the narrowest part of the inner sides of two adjacent expansion blocks is greater than the short diameter of the eccentric body and less than the long diameter of the eccentric body, when the embedded part and the mounting hole are subjected to expansion locking through a reverse locking mechanism, the whole expansion block can drive the clamping buckle to realize the effect of reverse locking after being outwards protruded.

Optionally: the cross section of eccentric body is oval structure, the anticreep spacing body adopts cylindrical structure, the diameter more than or equal to of anticreep spacing body the major axis diameter of eccentric body, the top of anticreep spacing body is equipped with the spigot surface.

By adopting the technical scheme, the cross section of the eccentric body is of an oval structure, and the effect of synchronous protrusion can be realized when the expansion blocks on the two sides are ejected outwards. And the major axis diameter of the diameter more than or equal to eccentric body of anticreep spacing body, the fastness is higher when carrying out the joint through anticreep spacing body and anticreep groove. Can make spacing body of anticreep when stretching into behind the mounting hole with the inflation piece contact through the spigot surface, make the one end of spacing body of anticreep convenient more insert between two inflation pieces through the spigot surface, then increase inside interval through the extrusion force of spigot surface to the inflation piece to the joint that makes spacing body of anticreep can be smooth is to anticreep inslot.

Optionally: the bail includes joint portion, spacing piece, screw locking lever and establishes joint portion with connecting rod between the spacing piece, joint portion with pass through between the spacing piece the connecting rod forms an annular spacing groove, the one end of screw locking lever is established on the spacing piece, the screw in degree of depth of screw locking lever passes through the spacing piece carries on spacingly.

Through adopting above-mentioned technical scheme, the bail passes through spacing piece and realizes taking degree of depth limit function, and the degree of depth of twisting can carry out quick spacing through spacing piece, and the installation of degree of depth position size is accurate after the bail locking, avoids appearing the threaded connection pole on the bail and twists the problem that the degree of depth is too dark or too shallow, and the installation degree of difficulty is lower, also can realize quick definite to the length of outside exposed portion moreover.

Optionally: the both ends in joint hole are equipped with second counter bore and third counter bore respectively, the joint hole include the dismouting hole, with the locking hole of the rectangular shape of dismouting hole intercommunication, the diameter in dismouting hole is greater than the diameter of joint portion, the diameter in locking hole is less than the diameter and the more than or equal to of joint portion the diameter of connecting rod, the bottom surface of third counter bore is the inclined plane structure, the degree of depth in joint hole is followed the dismouting hole along locking hole direction crescent sets up, the bail passes through joint portion with spacing piece presss from both sides tightly to be fixed the both ends in locking hole.

Through adopting the above-mentioned technical scheme, because the joint hole comprises the dismouting hole of mutual intercommunication and the locking hole of rectangular shape, and the diameter in dismouting hole is greater than the diameter of joint portion, the diameter in locking hole is less than the diameter of joint portion and the diameter of more than or equal to connecting rod, only need to move the income end that stretches into of bail from the locking hole to rectangular shape, just can lock the joint portion through locking hole, thereby make joint portion can not drop from locking hole, and simultaneously, process into the inclined plane structure with the bottom surface of third counter bore, thereby make the degree of depth in joint hole increase gradually along locking hole direction from the one end in dismouting hole, can make the spacing groove more big more to locking hole direction removal clamp force, thereby realize the effect that the one end of bail dies at the downthehole joint completely, and when dismantling, only need to move the connecting rod to dismouting hole direction and just can realize dismantling.

In order to solve the problem that the existing drawer is connected with the rear connecting piece, the connecting piece cannot be hidden and the connecting surface is prone to unevenness, the application provides a drawer with a hidden pre-embedded structure.

The application provides a drawer of pre-buried structure of hidden form adopts following technical scheme:

the utility model provides a drawer of hidden form embedded structure, is including taking out the panel, taking out the bottom plate, taking out the backplate, two take out curb plate, a plurality of self-tapping screw and a plurality of hidden form embedded structure connecting piece, take out the panel take out backplate and two the inboard of taking out the curb plate all is equipped with a draw-in groove, it all inserts to take out each side of bottom plate install fixedly in the draw-in groove, take out the curb plate with take out and carry out fixed connection through the self-tapping screw between the backplate, take out the curb plate with take out and pass through between the panel hidden form embedded structure connecting piece carries out fixed connection.

Through adopting above-mentioned technical scheme, the drawer adopts hidden form embedded construction connecting piece and self-tapping screw to connect fixedly, when assembling taking out the bottom plate, takes out the bottom plate and can realize firm location through inserting behind the draw-in groove, and seals the drawer bottom, avoids appearing the gap and produces. Meanwhile, after the drawer bottom plate is installed in the clamping groove, the height positions of the drawer panel, the drawer back plate and the two drawer side plates can be limited, when the drawer back plate and the two drawer side plates are fixedly connected, the two adjacent drawer back plates and the two drawer side plates are fixedly connected through at least two self-tapping screws, the phenomena of dislocation and relative inclination can be avoided, the drawer side plates and the drawer panel are fixedly connected through hidden pre-embedded structure connecting pieces, the three-in-one structure connecting part of the existing detachable drawer is replaced through the hidden pre-embedded structure connecting pieces, and the installed hidden pre-embedded structure connecting pieces can be completely hidden between the drawer side plates and the drawer panel, so that the external outline is not visible any more, and the appearance is neat and beautiful; and whole drawer adopts the installation of hidden form embedded construction connecting piece + self-tapping screw, and the accessory quantity has obtained effectual reduction to reduce the accessory cost, improved the installation effectiveness. The junction on the drawer no longer need set up the eccentric wheel mounting hole to make the drawer accomplish and put into use the back in the installation, the visual zone of whole drawer no longer has the exposed part of connecting piece, the effectual hole site that exists when having solved current trinity structural connection problem that explodes the limit easily, has also solved eccentric wheel and hole site simultaneously and has exposed the problem outside.

Optionally: the inboard of taking out the panel along the length direction of taking out curb plate installation face is provided with the embedded hole, the built-in fitting is installed in the embedded hole, be equipped with threely on the built-in fitting spacing hole and two the joint hole, spacing hole with the joint hole is the interval setting, the built-in fitting passes through reverse locking mechanism outwards extrudees protruding back locking and fixes in the embedded hole, the one end nail of bail is gone into on taking out the installation face of curb plate, have the bail take out the curb plate pass through the bail card is dead the downthehole back of joint with take out the panel and realize fixed connection.

Through adopting above-mentioned technical scheme, when fixing each other the built-in fitting with take out the panel, through outwards extrude protruding back locking to locking mechanism and fix in the pre-buried hole, the structure is simpler, and is fixed more convenient, has three spacing hole and two joint holes on the built-in fitting, no matter is to be connected fixedly through reverse locking mechanism and pre-buried hole to the built-in fitting, still carries out the joint through the bail to one side of taking out the curb plate and taking out the panel and fix, and fixed fastness is all better, and stability is higher. The positioning between the two is realized through the staple bolt, so that a wood tenon structure is not needed, the disassembly and the assembly are more convenient, and the adjustment is simpler when the assembly is wrong; the outer side of the embedded part after being embedded can be covered and shielded through an assembled product, so that the embedded part and the eccentric nail are perfectly hidden.

In summary, the present application has the following beneficial effects:

1. when assembling through hidden form embedded structure connecting piece, the embedded part is generally embedded in the embedded hole and is locked with the embedded hole through eccentric nail, and the embedded part outside after the embedding then can cover through the equipment product and shelter from, thereby make embedded part and eccentric nail all realize perfect hiding, and the equipment product that is used for covering the embedded part outside carries out the joint through the bail of preinstallation again and joint hole and fixes, thereby make the bail also can realize perfect hiding after the equipment, the eccentric wheel mounting hole no longer need be seted up to the junction of product, the effectual hole site that exists when having solved current trinity structural connection explodes the problem of limit easily, eccentric wheel and hole site exposed problem outside has also been solved simultaneously.

2. The connecting part of the three-in-one structure of the existing detachable drawer is installed by adopting a hidden pre-embedded structure connecting piece, and the connecting piece can be completely hidden in a plate after installation, so that the external outline is not visible any more, and the appearance is neat and beautiful; and whole drawer that can dismantle adopts hidden form embedded construction connecting piece + self-tapping screw installation, accessory quantity has obtained effectual reduction to reduced the accessory cost, improved the installation effectiveness, simultaneously, can also play the effect of location to the equipment face of two blocks of adjacent panels through the bail, thereby no longer need use the wood tenon structure, it is more convenient when the dismouting, especially when the assembly error appears, the adjustment is simpler.

Drawings

FIG. 1 is an exploded view of a pre-embedded part, an eccentric nail and a staple bolt of the present invention;

FIG. 2 is a state diagram of the clamping nail in the clamping hole of the present invention in a disassembled state;

FIG. 3 is a view showing the state that the staple is locked in the engaging hole;

FIG. 4 is a perspective view of the eccentric nail of the present invention;

fig. 5 is a first schematic structural diagram of an embedded part of the present invention, showing a specific structure of a reverse locking mechanism; showing the specific structure of the first counter bore and the stop block;

fig. 6 is a schematic structural diagram ii of an embedded part of the present invention, which shows a specific structure of a reverse locking mechanism;

fig. 7 is a side view of the eccentric nail of the present invention;

fig. 8 is a schematic structural view of the staple of the present invention;

fig. 9 is a third schematic structural view of the embedded part of the present invention, showing the mutual position relationship between the third counter bore and the clamping hole;

fig. 10 is a fourth schematic structural view of the embedded part of the present invention, showing the mutual position relationship between the second counter bore and the clamping hole;

fig. 11 is a cross-sectional view of an embedded part of the present invention, showing the inner structure of the limiting and clamping hole and the inclined bottom structure of the third counterbore;

fig. 12 is a sectional view of the eccentric body of the present invention in an unlocked state and spaced from the expansion block;

FIG. 13 is a cross-sectional view of the eccentric body driving the expansion block outward according to the present invention;

FIG. 14 is a cross-sectional view of the eccentric body of the present invention at a position spaced from the expansion block when the eccentric body is in the maximum locking state;

FIG. 15 is a schematic view of the drawer according to the present invention in an exploded state;

FIG. 16 is a schematic view of the structure of the drawer assembly of the present invention;

in the figure, 1, a staple; 2. embedding parts; 3. a limiting hole; 4. a clamping hole; 41. disassembling and assembling holes; 42. a locking hole; 5. an eccentric nail; 6. rotating the limiting body; 61. a connecting seat; 62. a limiting block; 7. an eccentric body; 8. an anti-drop limiting body; 9. a reverse locking mechanism; 91. a drop-proof groove; 92. clamping and buckling; 93. an expansion block; 10. a drive slot; 12. a first counterbore; 13. a stop block; 14. a guide surface; 15. a threaded locking bar; 16. a limiting sheet; 17. a connecting rod; 18. a clamping part; 19. a limiting groove; 20. a third counterbore; 21. a second counterbore; 22. drawing the bottom plate; 23. a card slot; 24. drawing the panel; 25. pre-burying a hole; 26. drawing a side plate; 27. drawing the back plate; 28. self-tapping screws; 100. hidden pre-buried structural connecting pieces.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings, and it should be noted that, without conflict, various embodiments or technical features described below may be arbitrarily combined to form a new embodiment.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Example 1: as shown in fig. 1 to 3, a hidden type embedded structure connecting piece includes an embedded part 2, a staple bolt 1 and an eccentric nail 5, the embedded part 2 is provided with a limiting hole 3 for placing the eccentric nail 5 and a clamping hole 4 for clamping the staple bolt 1, the embedded part 2 is further provided with a reverse locking mechanism 9, the reverse locking mechanism 9 is arranged at the bottom of the limiting hole 3, the eccentric nail 5 includes a rotation limiting body 6, an anti-falling limiting body 8 and an eccentric body 7 arranged between the rotation limiting body 6 and the anti-falling limiting body 8, the eccentric nail 5 is clamped at two ends of the limiting hole 3 through the rotation limiting body 6 and the anti-falling limiting body 8, the reverse locking mechanism 9 is extruded and protruded outwards through rotating the eccentric body 7, and the embedded part 2 is reversely locked outwards through the reverse locking mechanism 9 protruded outwards.

In the actual use process, the hidden type embedded structure connecting piece is composed of an embedded part 2, a staple bolt 1 and an eccentric nail 5, wherein the embedded part 2 comprises at least one limiting hole 3, a clamping hole 4 and a reverse locking mechanism 9, the eccentric nail 5 is installed in the limiting hole 3, the eccentric body 7 is placed in the limiting hole 3 in a limiting mode through a rotating limiting body 6 and an anti-falling limiting body 8 at two ends, so that the eccentric nail 5 is prevented from falling out of the limiting hole 3 through the rotating limiting body 6 and the anti-falling limiting body 8 at two ends, the reverse locking mechanism 9 for locking and fixing the embedded part 2 is further installed at the bottom of the limiting hole 3, the reverse locking mechanism 9 can generate outward extrusion force to form a protruding structure after the eccentric nail 5 rotates, the embedded part 2 is locked and fixed with an external mounting hole through the outward protruding reverse locking mechanism 9, when the embedded part 2 needs to be taken out, the eccentric nail 5 only needs to be rotated reversely, the eccentric body 7 does not generate outward extrusion force on the reverse locking mechanism 9 any more, the reverse locking mechanism 9, the automatic reset can be realized, the unlocking effect is realized, and the embedded part 2 can be taken out conveniently. And adopt eccentric body 7 structure to drive reverse locking mechanism 9 between rotatory spacing body 6 and the anticreep spacing body 8, when rotating eccentric body 7, eccentric body 7 can both produce different extrusion protruding scope for reverse locking mechanism 9's different rotation angle to make reverse locking mechanism 9 can realize outwards protruding gradually or inwards the effect of withdrawing gradually, can both expand the locking to the mounting hole clearance of difference, application scope is wider. And bail 1 then locks each other fixedly in joint hole 4 through one end joint, thereby make the product subassembly of installing built-in fitting 2 when assembling with the product subassembly of installing bail 1, only need insert bail 1 and just can realize the reciprocal anchorage lock diely in joint hole 4, it is more convenient to connect, junction between the product subassembly no longer need set up the eccentric wheel mounting hole, the effectual hole site that exists when having solved current trinity structural connection problem that explodes the limit easily, eccentric wheel and hole site exposed problem outside has also been solved simultaneously.

The connection assembly between two drawer plates is taken as an example, one drawer plate is provided with a pre-buried hole 25, then an embedded part 2 is integrally embedded and installed in the pre-buried hole 25, a reverse locking mechanism 9 is extruded outwards through a rotating eccentric nail 5 and then is expanded and locked in the pre-buried hole 25, meanwhile, one end of a clamp nail 1 is inserted into the side of the other drawer plate to a certain depth, finally, the outer end of the exposed clamp nail 1 is inserted into a clamping hole 4 in the embedded part 2 to be clamped, the relative fixation of the two drawer plates can be realized, the outer side of the embedded part 2 can be covered and shielded through the side of the drawer plate with the clamp nail 1, the whole connecting part is completely hidden, the whole connecting structure does not need to be provided with an eccentric wheel installation hole any more, the problem that the eccentric wheel hole site is easy to burst when the existing three-in-one eccentric wheel structure is connected is effectively solved, and the problem that the eccentric wheel hole site is exposed outside is also solved.

The second embodiment: the first embodiment is further improved in that, as shown in fig. 4, the rotation limiting body 6 includes a cylindrical connecting seat 61 and a limiting block 62 arranged on the connecting seat 61, the connecting seat 61 extends into the limiting hole 3, the rotation limiting body 6 rotates through the limiting block 62, and one end of the limiting hole 3 is limited through the limiting block 62.

Rotatory spacing body 6 comprises columniform connecting seat 61 and stopper 62, wherein connecting seat 61 stretches into in the spacing hole 3, after adorning through connecting seat 61 and spacing hole 3, can make the clearance of whole eccentric nail 5 in spacing hole 3 littleer, the difficult left and right sides rocking by a wide margin that appears, and simultaneously, stopper 62 generally installs at the top of connecting seat 61 and outside arch, after the terminal surface contact through stopper 62 and spacing hole 3, can avoid the one end of rotatory spacing body 6 to drop in spacing hole 3, also can make rotatory spacing body 6 form a rotating part, directly rotate whole eccentric nail 5 through stopper 62, wherein the quantity of stopper 62 generally is 2 to 4, it adopts the partition installation to separate the position therebetween, it is more convenient when manual or adopt the instrument to rotate, it is more simple and convenient to make.

In the third embodiment, a further improvement is that, as shown in fig. 5, a first counter bore 12 is provided at the upper end of the limiting hole 3, a stop block 13 protruding inward is provided on the side wall of the first counter bore 12, the limiting block 62 is provided in the first counter bore 12, the rotating limiting block 62 stops rotating after touching the stop block 13, and the position of the eccentric body 7 in the locking or unlocking state of the reverse locking mechanism 9 is positioned by the stop block 13.

Set up a coaxial first counter bore 12 on spacing hole 3, and spacing hole 3 is located first counter bore 12, can accomodate stopper 62 through first counter bore 12, thereby outwards protruding structure can not appear when making stopper 62 install on built-in fitting 2, thereby the thickness of whole connecting piece has been reduced, make the hole depth of erection joint spare can be littleer, the product wall thickness can be thinner, and inwards protruding formation has the stopper piece 13 on the lateral wall of first counter bore 12, stopper 62 must touch the stopper piece 13 after rotating along first counter bore 12, and the one side position of stopper piece 13 generally is the end position when eccentric body 7 is to the locking or the unblock state of reverse locking mechanism 9, thereby realized locking or quick unblock to eccentric nail 5 through stopper piece 13, in the operation, only need to rotate eccentric nail 5 fast stopper 62 and the contact of stopper piece 13, just indicate to reach required position. Wherein, stopper 62 on the connecting seat 61 preferentially adopts two and symmetry settings, and ends a piece 13 and also adopts two and symmetry settings, thereby make first counter bore 12 form two arc recesses that are used for rotating stopper 62 respectively through ending a piece 13, the both sides of ending a piece 13 correspond reverse locking mechanism 9's the biggest bulge state respectively and return the state of contracting, when judging reverse locking mechanism 9's locking or unblock state, only need look over stopper 62's current position and just can realize quick judgement.

In the fourth embodiment, a further improvement is made on the basis of the third embodiment, as shown in fig. 4, an inwardly recessed driving groove 10 is formed in the top of the connecting seat 61, and the rotation limiting body 6 rotates through the driving groove 10.

Because stopper 62 is located first counter bore 12 to when leading to one side of stopper 62 and ending the contact of a piece 13, hardly carry out rotary drive again, consequently, seted up an inside sunken drive groove 10 at the top of connecting seat 61, drive groove 10 generally adopts the structure that matches with screwdriver head or hexagonal spanner, when rotating eccentric nail 5, rotates more nimble convenience through drive groove 10.

Fifth, as shown in fig. 6 and fig. 12 to 14, a further improvement is that the reverse locking mechanism 9 includes expansion blocks 93 symmetrically disposed at the bottoms of the limiting holes 3, snap fasteners 92 disposed at the outer sides of the expansion blocks 93, and anti-falling grooves 91 disposed at the inner sides of the expansion blocks 93, the snap fasteners 92 are disposed on the expansion blocks 93 in an outward protruding structure, the inner widths of two adjacent expansion blocks 93 are greater than the short diameter of the eccentric body 7 and smaller than the long diameter of the eccentric body 7, and the bottoms of the eccentric nails 5 inserted into the limiting holes 3 are snapped in the anti-falling grooves 91 through the anti-falling limiting bodies 8.

As shown in fig. 6, one end of the expansion block 93 is installed at the bottom of the limiting hole 3, an outward convex clamping buckle 92 is formed at the outer side of the expansion block 93, an inward concave anti-falling groove 91 is formed at the inner side of the expansion block 93, and after the eccentric nail 5 is installed in the limiting hole 3, the anti-falling limiting body 8 is located in the anti-falling groove 91, so that the phenomenon that one end of the anti-falling limiting body 8 of the eccentric nail 5 falls out is avoided. And the width of the narrowest part of the inner side of the two adjacent expansion blocks 93 is greater than the minor diameter of the eccentric body 7 and smaller than the major diameter of the eccentric body 7, when the embedded part 2 and the mounting hole are subjected to expansion locking through the reverse locking mechanism 9, as shown in fig. 12 to 14, when the width of the eccentric body 7 between the two adjacent expansion blocks 93 is gradually greater than the inner side distance of the two adjacent expansion blocks 93, the eccentric body 7 will generate a synchronous outward extrusion acting force on the two adjacent expansion blocks 93, so that the whole expansion block 93 drives the clamping buckle 92 to bulge outwards to realize the effect of reverse locking. Simultaneously, the diameter of connecting seat 61 is less than spacing hole 3's diameter, and when the required coefficient of expansion of the inflation piece 93 that appears both sides is different, can carry out self-regulation through the clearance surplus between connecting seat 61 and the spacing hole 3 to avoid appearing the unable dead phenomenon of lock of one side. The embedded part 2 and the reverse locking mechanism 9 are generally integrally formed by plastic materials, so that the manufacturing cost is lower.

Sixth embodiment, a further improvement on the basis of fifth embodiment is that, as shown in fig. 7, the cross section of the eccentric body 7 is an elliptical structure, the anti-falling stopper 8 is a cylindrical structure, the diameter of the anti-falling stopper 8 is greater than or equal to the diameter of the long axis of the eccentric body 7, and a guide surface 14 is arranged at the top of the anti-falling stopper 8.

Whole eccentric nail 5 adopts integrated into one piece, adopts coaxial setting between eccentric body 7, rotatory spacing body 6 and the anticreep spacing body 8, and whole processing is more convenient moreover, and the cross section of eccentric body 7 is oval structure, can realize synchronous bellied effect when outwards ejecting expanding block 93 to both sides. And the major axis diameter of the eccentric body 7 of diameter more than or equal to of anticreep spacing body 8, the fastness is higher when carrying out the joint through anticreep spacing body 8 and anticreep groove 91, and form the spigot surface 14 structure at 8 tops of anticreep spacing body, because the diameter of anticreep spacing body 8 is greater than the width of two adjacent expansion blocks 93, therefore, when installing eccentric nail 5 in the built-in fitting 2, can make the anticreep spacing body 8 contact with expansion block 93 after stretching into the mounting hole through spigot surface 14, make two expansion blocks 93 of more convenient inserting of one end of anticreep spacing body 8 through spigot surface 14, then increase inside interval to the extrusion force of expansion block 93 through spigot surface 14, thereby make the joint that the anticreep spacing body 8 can be smooth to anticreep groove 91 in.

Seventh embodiment, a further improvement on the sixth embodiment is that, as shown in fig. 8, the staple 1 includes a clamping portion 18, a limiting piece 16, a thread locking rod 15, and a connecting rod 17 arranged between the clamping portion 18 and the limiting piece 16, an annular limiting groove 19 is formed between the clamping portion 18 and the limiting piece 16 through the connecting rod 17, one end of the thread locking rod 15 is arranged on the limiting piece 16, and the screwing depth of the thread locking rod 15 is limited by the limiting piece 16.

Staple bolt 1 has directly formed two linkage segments through spacing piece 16, wherein the screw thread connecting rod 17 of the compass of one side can directly be connected fixedly with the product, and staple bolt 1 realizes taking degree of depth limit function through spacing piece 16, the degree of depth of twist can carry out quick spacing through spacing piece 16, the degree of depth position size installation is accurate after the staple bolt 1 locks, avoid appearing the problem that the screw thread connecting rod 17 on the staple bolt 1 twists the degree of depth too dark or too shallow, the installation degree of difficulty is lower, and also can realize quick definite to the length of outside exposed portion. Simultaneously, connect through connecting rod 17 that no screw thread set up between joint portion 18 and the spacing piece 16, when joint portion 18 inserts joint hole 4 and carries out the joint fixed, the position precision is higher, and joint portion 18 and spacing piece 16 can also form a fixed tight space of clamp moreover to the connection stability who makes joint portion 18 is better.

Eighth embodiment, on the basis of seventh embodiment, the further improvement is that, as shown in fig. 9, fig. 10 and fig. 11, both ends of the clamping hole 4 are respectively provided with a second counter bore 21 and a third counter bore 20, the clamping hole 4 includes a dismounting hole 41 and a locking hole 42 in a strip shape communicated with the dismounting hole 41, the diameter of the dismounting hole 41 is greater than that of the clamping portion 18, the diameter of the locking hole 42 is smaller than that of the clamping portion 18 and is greater than or equal to that of the connecting rod 17, the bottom surface of the third counter bore 20 is an inclined plane structure, the depth of the clamping hole 4 is gradually increased along the direction of the locking hole 42 from the dismounting hole 41, and the clamp 1 is clamped and fixed at both ends of the locking hole 42 through the clamping portion 18 and the limiting piece 16.

When one end of the staple 1 is clamped into the clamping hole 4, one side of the limiting sheet 16 is attached to the second counter bore 21 and is accommodated through the second counter bore 21, the clamping portion 18 passes through the dismounting hole 41 through the connecting rod 17 and then extends into the third counter bore 20, because the clamping hole 4 consists of the dismounting hole 41 and the strip-shaped locking hole 42 which are communicated with each other, the diameter of the dismounting hole 41 is larger than that of the clamping portion 18, the diameter of the locking hole 42 is smaller than that of the clamping portion 18 and is larger than or equal to that of the connecting rod 17, the clamping portion 18 can be locked through the locking hole 42 only by moving the extending end of the staple 1 from the dismounting hole 41 to the strip-shaped locking hole 42, so that the clamping portion 18 cannot fall off from the locking hole 42, meanwhile, if the width of the limiting groove 19 is larger than or equal to the depth of the clamping hole 4, then produce not hard up phenomenon easily, the effect of locking after locking is poor, and when the width of spacing groove 19 is less than the degree of depth of joint hole 4, then the problem that can't buckle into fast will appear, therefore, the bottom surface with third counter bore 20 is processed into the inclined plane structure, thereby make the degree of depth of joint hole 4 increase gradually along locking hole 42 direction from the one end of dismouting hole 41, wherein the degree of depth of dismouting hole 41 is less than the length of connecting rod 17, and the maximum depth of locking hole 42 is then greater than the length of connecting rod 17, at this moment, when connecting rod 17 carries out the in-process that removes along joint hole 4, can make spacing groove 19 more to locking hole 42 direction removal clamp force big more, thereby realize the effect that the one end of bail 1 blocks completely in joint hole 4, and when dismantling, only need move connecting rod 17 to dismouting hole 41 direction and just can realize dismantling.

Example nine: as shown in fig. 15 and 16, the drawer with the hidden embedded structure comprises a drawing panel 24, a drawing bottom plate 22, a drawing back plate 27, two drawing side plates 26, a plurality of tapping screws 28 and a plurality of hidden embedded structure connecting pieces 100, wherein the drawing panel 24, the drawing back plate 27 and the two drawing side plates 26 are respectively provided with a clamping groove 23 on the inner side, each side edge of the drawing bottom plate 22 is inserted into the clamping groove 23 for installation and fixation, the drawing side plates 26 and the drawing back plate 27 are fixedly connected through the tapping screws 28, and the drawing side plates 26 and the drawing panel 24 are fixedly connected through the hidden embedded structure connecting pieces 100.

As shown in fig. 15 and 16, the drawer in this embodiment is connected and fixed by the hidden pre-embedded structure connecting piece 100 and the tapping screw 28 in any one of the above embodiments, wherein the drawing panel 24, the drawing back panel 27 and the two drawing side panels 26 are all provided with a clamping groove 23 on the inner sides thereof, as shown in fig. 15, when the drawing bottom panel 22 is assembled, the drawing bottom panel 22 can be firmly positioned by being inserted into the clamping groove 23, and the bottom of the drawer is sealed, so that the occurrence of a gap is avoided. Meanwhile, after the bottom drawing plate 22 is installed in the clamping groove 23, the height positions of the back drawing plate 24, the back drawing plate 27 and the two side drawing plates 26 can be limited, when the back drawing plate 27 and the two side drawing plates 26 are fixedly connected, at least two self-tapping screws 28 are fixedly connected between the two adjacent back drawing plates 27 and the side drawing plates 26, matched installation holes can be formed in the installation positions of the self-tapping screws 28 of the back drawing plate 27 and the side drawing plates 26 in advance, so that the self-tapping screws 28 can be conveniently screwed in, the relative fixation between the two self-tapping screws is also facilitated, the phenomena of dislocation and relative inclination are avoided, the side drawing plates 26 and the side drawing plate 24 are fixedly connected through the hidden embedded structure connecting piece 100, the connecting part of the three-in-one structure of the existing detachable drawer is replaced by the hidden embedded structure connecting piece 100, and the hidden embedded structure connecting piece 100 can be completely hidden between the side drawing plates 26 and the side drawing plates 24 after installation, so that the external outline can not be seen, and the appearance is neat; and whole drawer adopts the installation of hidden form pre-buried structural connection spare 100+ self-tapping screw 28, and the accessory quantity has obtained effectual reduction to the accessory cost has been reduced, has improved the installation effectiveness. The junction on the drawer no longer need set up the eccentric wheel mounting hole to make the drawer accomplish and put into use the back in the installation, the visual zone of whole drawer no longer has the exposed part of connecting piece, the effectual hole site that exists when having solved current trinity structural connection problem that explodes the limit easily, has also solved eccentric wheel and hole site simultaneously and has exposed the problem outside.

The improvement is further based on the ninth embodiment that: as shown in fig. 15 and 16, the inner side of the drawing panel 24 is provided with a pre-buried hole 25 along the length direction of the mounting surface of the drawing side panel 26, the embedded part 2 is installed in the pre-buried hole 25, the embedded part 2 is provided with three limiting holes 3 and two clamping holes 4, the limiting holes 3 and the clamping holes 4 are arranged at intervals, the embedded part 2 is locked and fixed in the pre-buried hole 25 after being extruded and protruded outwards by the reverse locking mechanism 9, one end of the clamp staple 1 is nailed into the mounting surface of the drawing side panel 26, and the drawing side panel 26 with the clamp 1 is fixedly connected with the drawing panel 24 after being clamped in the clamping holes 4 by the clamp 1.

The inner side of the drawing panel 24 is provided with a pre-embedded hole 25 along the length direction of the mounting surface of the drawing side plate 26, the pre-embedded hole 25 and the clamping groove 23 are generally vertically arranged, so that the side plates of the drawer can be kept vertical to each other, when the drawing side plate 26 and the drawing panel 24 are connected and assembled through the hidden pre-embedded structure connecting piece 100, the pre-embedded part 2 is embedded and placed in the pre-embedded hole 25, the upper surface of the pre-embedded part 2 is flush with the drawing panel 24, then the eccentric nail 5 is screwed, and the reverse locking mechanism 9 is driven by the eccentric nail 5 to extrude the bulge outwards and then is locked and fixed in the pre-embedded hole 25, so that the pre-embedded part 2 is locked on the drawing panel 24; meanwhile, the clamp 1 is installed in a clamp 1 installation hole which is formed in the side drawing plate 26 in advance, and finally the side drawing plate 26 with the clamp 1 and the side drawing plate 24 with the embedded part 2 are clamped and fixed through the clamp 1, so that the side drawing plate 26 and the side drawing plate 24 are fixed with each other. Because the clamping hole 4 consists of the dismounting hole 41 and the locking hole 42 which are mutually communicated, the clamping hole 4 is generally of a gourd hole structure, when the head of the clamp 1 is clamped into the locking hole 42 from the dismounting hole 41 of the embedded part 2, the clamp 1 can realize automatic locking through the locking hole 42, and finally the assembly of the drawer is realized; when the drawer needs to be disassembled, the staple 1 can be pressed into the disassembling and assembling hole 41 from the locking hole 42 only by reversely generating a certain force, so that the disassembling and assembling hole 41 is pulled out outwards to disassemble the drawer. Because fix a position through bail 1 between the two to no longer need use the tenon structure, it is more convenient when the dismouting, especially when the assembly error appears, the adjustment is simpler. The outer side of the embedded part 2 can be covered and shielded through an assembled product, so that the embedded part 2 and the eccentric nail 5 are perfectly hidden.

Wherein, it is preferred, the length of built-in fitting 2 is generally about 2/3 of taking out the height of curb plate 26, and three spacing hole 3 and two joint holes 4 have on the built-in fitting 2, specific quantity and position between them can be adjusted according to the length and the particular case of built-in fitting 2, preferentially adopt the interval setting between spacing hole 3 and the joint hole 4, no matter be to built-in fitting 2 through reverse locking mechanism 9 with pre-buried hole 25 be connected fixedly, still carry out the joint through bail 1 to one side of taking out curb plate 26 and taking out panel 24 and fix, fixed fastness is all better, stability is higher. As shown in fig. 15, in the drawer assembled by the self-tapping screw 28 and the concealed pre-embedded structure connecting piece 100, the number of the finally required accessories is only 16, so that the cost of the accessories is reduced, and the installation efficiency is improved.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a pre-buried structural connection spare of hidden form which characterized in that: including built-in fitting (2), bail (1) and eccentric nail (5), be equipped with on built-in fitting (2) and be used for placing spacing hole (3) of eccentric nail (5) with be used for the joint hole (4) of bail (1), still be equipped with reverse locking mechanism (9) on built-in fitting (2), establish reverse locking mechanism (9) the bottom of spacing hole (3), eccentric nail (5) are including rotatory spacing body (6), anticreep spacing body (8) and establish rotatory spacing body (6) with eccentric body (7) between anticreep spacing body (8), eccentric nail (5) are passed through rotatory spacing body (6) with anticreep spacing body (8) joint is in the both ends of spacing hole (3), through rotatory eccentric body (7) are right reverse locking mechanism (9) outwards extrude protrudingly, built-in fitting (2) are through outwards bellied reverse locking mechanism (9) carry out outside reverse locking.

2. The hidden pre-buried structural connecting piece of claim 1, which is characterized in that: the rotary limiting body (6) comprises a cylindrical connecting seat (61) and a limiting block (62) arranged on the connecting seat (61), the connecting seat (61) extends into the limiting hole (3), the rotary limiting body (6) rotates through the limiting block (62), and one end of the limiting hole (3) is limited through the limiting block (62).

3. The invisible embedded structure connecting piece of claim 2, which is characterized in that: the upper end of spacing hole (3) is equipped with first counter bore (12), be equipped with on the lateral wall of first counter bore (12) inside bellied stopper (13) of ending, stopper (62) are established in first counter bore (12), the pivoted stopper (62) are touched stop behind stopper (13) and continue to rotate, eccentric body (7) are right the locking or the unblock state position of reverse locking mechanism (9) is passed through end stopper (13) and fix a position.

4. The invisible embedded structure connecting piece of claim 3, which is characterized in that: the top of connecting seat (61) is equipped with inside sunken drive groove (10), rotatory spacing body (6) are passed through drive groove (10) rotate.

5. The hidden embedded structure connecting piece as claimed in any one of claims 1 to 4, wherein: reverse locking mechanism (9) set up including the symmetry expansion block (93) of spacing hole (3) bottom, establish joint in expansion block (93) outside is detained (92), is established anti-escape slot (91) of expansion block (93) inboard, joint is detained (92) and is outside protruding structure setting and is in on expansion block (93), adjacent two the inboard width of expansion block (93) is greater than the minor diameter of eccentric body (7) just is less than the major diameter of eccentric body (7) inserts spacing hole (3) eccentric nail (5) bottom is passed through anti-escape spacing body (8) joint is in anti-escape slot (91).

6. The hidden pre-buried structural connecting piece of claim 5, wherein: the cross section of eccentric body (7) is oval structure, anticreep spacing body (8) adopt cylindrical structure, the diameter more than or equal to of anticreep spacing body (8) the major axis diameter of eccentric body (7), the top of anticreep spacing body (8) is equipped with spigot surface (14).

7. The hidden pre-buried structural connecting piece of claim 1, which is characterized in that: staple bolt (1) includes joint portion (18), spacing piece (16), screw locking lever (15) and establishes joint portion (18) with connecting rod (17) between spacing piece (16), joint portion (18) with pass through between spacing piece (16) connecting rod (17) form an annular spacing groove (19), the one end of screw locking lever (15) is established on spacing piece (16), the screw in degree of depth of screw locking lever (15) passes through spacing piece (16) are spacing.

8. The invisible embedded structure connecting piece of claim 7, which is characterized in that: the both ends in joint hole (4) are equipped with second counter bore (21) and third counter bore (20) respectively, joint hole (4) including dismouting hole (41), with locking hole (42) of the rectangular shape of dismouting hole (41) intercommunication, the diameter in dismouting hole (41) is greater than the diameter of joint portion (18), the diameter in locking hole (42) is less than the diameter and the more than or equal to of joint portion (18) the diameter of connecting rod (17), the bottom surface of third counter bore (20) is the inclined plane structure, the degree of depth in joint hole (4) is followed dismouting hole (41) along locking hole (42) direction crescent sets up, bail (1) passes through joint portion (18) with spacing piece (16) press from both ends of pressing from both sides the fastening and fixing locking hole (42).

9. A drawer with a hidden embedded structure comprises a drawing panel (24), a drawing bottom plate (22), a drawing back plate (27), two drawing side plates (26), a plurality of tapping screws (28) and a hidden embedded structure connecting piece (100) as claimed in any one of claims 1 to 8, and is characterized in that: draw panel (24) draw backplate (27) and two the inboard of drawing curb plate (26) all is equipped with a draw-in groove (23), each side of drawing bottom plate (22) all inserts install fixedly in draw-in groove (23), draw curb plate (26) with draw and carry out fixed connection through self-tapping nail (28) between backplate (27), draw curb plate (26) with draw and pass through between panel (24) hidden form embedded structure connecting piece (100) carry out fixed connection.

10. The drawer with the concealed embedded structure as claimed in claim 9, wherein: the inboard of taking out panel (24) along take out the length direction of curb plate (26) installation face and be provided with embedded hole (25), install built-in fitting (2) in embedded hole (25), be equipped with threely on built-in fitting (2) spacing hole (3) and two joint hole (4), spacing hole (3) with joint hole (4) are the interval and set up, built-in fitting (2) pass through reverse locking mechanism (9) outwards extrude the arch after the locking fix in embedded hole (25), the one end nail of bail (1) is gone into take out on the installation face of curb plate (26), have bail (1) take out curb plate (26) pass through bail (1) card die behind in joint hole (4) with take out panel (24) and realize fixed connection.