Summary of the invention
The object of this invention is to provide a kind of connecting nail of new structure.
According to an aspect of the present invention, provide a kind of link connected for sheet material, comprise the sleeve of band T head and the loop bar of band T head, loop bar to be inserted in sleeve and to engage with sleeve, described link is made to become I-shaped, the front end of described loop bar is provided with engagement portion, and the barrel of described sleeve is provided with the snap fit portion matched with the engagement portion of described loop bar, described loop bar has along the through mesopore of shaft axis, and described loop bar offers some axial grooves making the radial deformation in the front end of described loop bar, described link also comprises an inserted link, this inserted link is axially assemblied in the mesopore of described loop bar.
Further, the mesopore inwall of described loop bar has radial outstanding bump, and the outer wall of described inserted link has the groove matched with described bump, the track of described groove is curve.
Further, the bump of described loop bar and the leading portion interference fit of described groove, and the degree of depth of described groove back segment is greater than the degree of depth of leading portion, interference fit between the sidewall of described groove back segment and described bump, when described inserted link and described loop bar are seated completely, described groove is provided with the hole clipping of bump described in a backstop.
Further, described inserted link is provided with end cap, and the T head of described loop bar has the heavy stand matched with the end cap of described inserted link, and when described inserted link and described loop bar are seated completely, the complete depression of described end cap is in described heavy stand.
Further, described link also comprises jump ring, and the outer wall of described sleeve has the draw-in groove engaging described jump ring.
Further, the ingress of described sleeve lining is provided with the buckle of band oblique surface.
Further, the T head of described sleeve has some claws towards the one side in cylinder portion.
The invention has the beneficial effects as follows: sheet material just can be connected and fixed after mutually engaging with the snap fit portion of sleeve by the engagement portion of loop bar, the T head of loop bar and sleeve increases the lifting surface area of link and sheet material, makes between sheet material fixing more firm; Again inserted link is assemblied in the mesopore of loop bar, the radial deformation in the front end of loop bar can be stoped, by locked for the snap-in structure between loop bar and sleeve, can prevent the snap-in structure of loop bar and sleeve from loosening.This connecting-piece structure is simple, and assembling is quick.
Embodiment
A kind of link connected for sheet material as shown in Figure 1, comprise the sleeve 100 of band T head and the loop bar 200 of band T head, loop bar 200 to be inserted in sleeve 100 and to engage with sleeve 100, described link is made to become I-shaped, this link is used for the stitching of sheet material when fixing, need first the sheet material that will connect to be held successfully corresponding mounting hole, then being inserted in the cylinder portion of sleeve 100 is connected in the mounting hole of sheet material, again loop bar 200 is inserted in the cylinder of sleeve 100, and mutually engage with sleeve 100, the sheet material be connected is by the T head (110 of sleeve 100 with loop bar 200, 210) clamp, the stitching adopting multiple link just can realize sheet material is fixed, according to packaging box volume and stressed size, can by the T head (110 of sleeve 100 with loop bar 200, 210) different sizes is designed to, the T head of loop bar and sleeve increases the area of contact of link and sheet material, make the connection between sheet material more firm.
Referring to figs. 1 to Fig. 4, snap fit between loop bar 200 and sleeve 100 arranges engagement portion 220 in the front end of described loop bar 200, and on the barrel of described sleeve 100, be provided with the snap fit portion 120 matched with the engagement portion 220 of described loop bar 200, the position in described snap fit portion 120 can be designed according to required fixing sheet metal thickness, no longer loosening after sheet material being clamped by sleeve 100 and loop bar 200 engage.Specifically, engagement portion 220 on described loop bar 200 can be the inverted triangle buckle that uniform ring is around in two or more protrusions of loop bar 200 front end, and the snap fit portion 120 of sleeve 100 can be provided at blind hole on sleeve 100 barrel or through hole, the number of this blind hole or through hole is corresponding with described inverted triangle buckle.
More easily be assembled in sleeve 100 to make loop bar 200, described loop bar 200 has along the through mesopore 230 of shaft axis, and described loop bar 200 offers some axial grooves 240 making the radial deformation in the front end of described loop bar 200, because engagement portion 220 external diameter of loop bar 200 is greater than sleeve 100 internal diameter, so when assembling, need the leading portion radial compression of loop bar 200, the object that described axial groove 240 just can realize loop bar 200 leading portion radial contraction is set between each buckle.
For preventing mutually rotating between this link and sheet material, the T head 110 of described sleeve 100 has some claws 150 towards the one side in cylinder portion, and during assembling, the claw 150 of sleeve 100 snaps in sheet material, to be connected, by after sheet material locking, is no longer rotated between link and sheet material.
With reference to figure 5 and Fig. 6, solid and reliable in order to ensure the assembling of loop bar and sleeve, described link also comprises an inserted link 300, this inserted link 300 is axially assemblied in the mesopore 230 of described loop bar 200, this inserted link can stop the radial deformation in the front end of loop bar, make the inverted triangle buckle of loop bar and the blind hole of sleeve or through hole lock and cannot take out, further ensure between loop bar with sleeve and engage firmly.
In use come off from link to prevent described inserted link 300 further, therefore there is radial outstanding bump 250 on mesopore 230 inwall of the described loop bar 200 of link, this bump 250 is preferably a projection, and the outer wall of described inserted link 300 has the groove 310 matched with described bump 250, the track of described groove 310 is curve.Be sticked in by the bump 250 of loop bar 200 in the curved slot 310 of inserted link 300 outer wall, inserted link just can not easily from slippage in the mesopore of loop bar.
In order to further described inserted link 300 be fixed with described loop bar 200, the bump 250 of described loop bar 200 is designed to the leading portion 311 of described groove 310 in radial direction interference fit, and the degree of depth of described groove 310 back segment 312 is greater than the degree of depth of leading portion 311, after making described bump 250 snap in the back segment 312 of groove 310, have the step of backstop when returning the leading portion 311 of groove 310 again, this step can effectively prevent inserted link 300 from departing from loop bar 200.Described groove 310 back segment 312 is grooves of a taper in width, interference fit between the sidewall of described groove 310 back segment 312 and described bump 250, therefore, this bump 250 is more tighter toward the engaging of groove 310 back segment, when described inserted link 300 is seated completely with described loop bar 200, described groove 310 is provided with the hole clipping 313 of bump 250 described in a backstop, the diameter of this hole clipping 313 is greater than the recess width at this place, therefore, bump 250 can be limited in this hole clipping 313 after arriving this hole clipping 313 position, make can not loosen between inserted link 300 and loop bar 200, and make inserted link also be difficult to take out in the mesopore of loop bar.
Described inserted link 300 is also provided with end cap 320, and the T head 210 of described loop bar 200 has the heavy stand 211 matched with the end cap 320 of described inserted link 300, when described inserted link 300 is seated completely with described loop bar 200, the complete depression of described end cap 320 is in described circular heavy stand 211.Now, as taken link apart, then need first to be destroyed by this link, during goods packing, after being sewed up by this link, if any opening, be then easy to recognize, therefore this link also has package anti-counterfeiting, tamper function.
Described link also comprises jump ring (not shown), and the outer wall of described sleeve 100 has the draw-in groove 130 engaging described jump ring, jump ring is located between two plates, not only can prevent from being sewn fixing sheet material to move axially along link, and increase link and the area of contact being connected sheet material, make the connection of sheet material more firm.
The ingress of described sleeve 100 inwall is also provided with the buckle 140 of band oblique surface, and this buckle 140 can prevent loop bar 200 from departing from sleeve 100, and when loop bar and sleeve assemble, its oblique surface can make the engagement portion 220 of loop bar 200 be easier to import.
Heavy packages case comprises container of paperboard by this link rapid-assembling, and this link part is less, and assembling speed is fast, be connected firmly, and outward appearance class is higher.
Certainly, above embodiment is merely illustrative and not limiting to the invention, the above is only preferred embodiment of the present invention, therefore all equivalences done according to the scheme described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.