CN1039644A - Contain at least device peg anchored in the blind hole of an object - Google Patents

Abstract

Nail 5 is a tubulose.The one end becomes frustum-like shape 8, the expansion part 7 that has one 11 by truncated cone is anchored in the blind hole 2 of an object 1,11 then are pressed on the bottom 4 of blind hole 2, this enlarges part 7 and this end engagement of following closely 5, and at least a portion of this end radially be expanded 5 ', 5 ", so just guarantee to be anchored in the blind hole 2.

Description

Contain at least device peg anchored in the blind hole of an object

The present invention relates to a kind ofly contain at least device peg anchored in the blind hole of an object, and a kind of in the cylindricality blind hole of an object peg anchored method.

Known have the whole bag of tricks peg can be installed on the hard object, for example, and in the watch chain technology.The peg of watch chain or pin are driven in the hole of the suitable bore in the hard object usually.Use the back to find that the part that peg is driven into is shunk, only clamp peg at the place, aperture.Obviously, this fixing on fillet is not very solid, so the watch chain after using several years, some peg just can not be clamped on the object that is driven into.

The mode that addresses this problem is found out substantially.Make peg with annular knurl in the end of peg, and then one arrowband, garden than minor diameter is arranged behind the annular knurl position, the annular knurl position is wedged and keep being pushed the situation of folder in the bottom surface, hole that got out for this reason, and there is a very little gap ingress in the hole between hole wall and arrowband, garden.Contain some metal fillingss at the annular knurl position inevitably, this will cause corrosion, at this moment, also easily cause corrosion in the inlet gap in hole, so though peg is anchored on the bottom, hole, it makes with longevity life And unsatisfactory.And the peg cost of grappling is quite expensive like this.

At last, because of the requirement on the grappling operation quality in shallow bore hole, can not reach according to present technical merit.

The objective of the invention is to overcome these shortcomings, the present invention includes: a kind of device, contain in the blind hole of at least one object peg anchored, wherein peg is a tubulose, at least one the expansion part that comprises into frustoconical, the Duan Nei And and the blind hole that are arranged on tubular pin mesh each other, the big end of cone that enlarges part exceeds the outer And of this end end conflict of blind hole therewith of tubular pin, and at least one zone that is engaged in the tubular pin of this blind hole, and another zone radially enlarges so that guarantee grappling in blind hole.A kind of method, the method in the garden post blind hole of an object is gone in a kind of at least one end grappling with a tubular pin, wherein an at least one end that enlarges part at least a portion and tubular pin is meshing with each other, the site of action of this expansion part becomes butt shape, and this expansion part has a position when tubular pin and enlarge part fully in blind hole after the engagement, in order to be pressed on the end of blind hole, wherein one radially the expansion section be the position that tubular pin meshes in blind hole, use axial force and force the expansion part to be imbedded in the tubular pin, tubular pin Jing is pressed into this expansion section in the sidewall of blind hole to the powerful ground of Kuo Da And.And one group of device of carrying out this method, the device in one group of cylindricality blind hole that tubular pin is anchored on an object, this device comprises that a tubular pin and is matched with the expansion part of tubular pin one end, and this enlarges part and becomes frustum, and it is of a size of; Mesh in the end in tubular pin fully when enlarging part, its maximum diameter end has a position and protrudes in outside the tubular pin, and when this end of tubular pin enlarges in the wedged hole of part together with this, the expansion part top of this end of tubular pin is pressed at the end of blind hole, and wherein except tubular pin is done the radially expansion, this enlarges part to exceed in this end that can not enter tubular pin.

The present invention gives Jie Shi And by the accompanying drawing shown in a series of embodiments it is described;

Fig. 1 is that first embodiment constitutes the decomposition view between part.

Fig. 2 is first embodiment's an axial sectional view.

Fig. 3 is second embodiment's an axial sectional view.

Fig. 4 is the 3rd embodiment's an axial sectional view.

Fig. 5 is the another kind distortion of Fig. 4, the part plane view of a metal chain that is made of plural row hinge chain.

The part of 1 among Fig. 1 expression, one metalwork is drilled with a blind hole 2 ， And therein and has a cylindrical wall 3, and the end of blind hole is with 4 expressions.

5 expressions, one tubular pin, the one end will be led in the interior blind hole 2.

7 are expressed as the expansion part of taper 8.10 one-tenth knob shapes of its larger diameter end outstanding 11 are to evagination, and its function will be illustrated below.Larger diameter end 10 is big than footpath within the tubular pin 5.But can also equal the latter.

9 internal diameters than tubular pin of minor diameter that enlarge part 7 are little.

The geometrical axis of 12 expression metalworks 1, the shaft axis that enlarges part 7 and tubular pin 5 is also all on this axis.

Fig. 2 represents element 1,5 and 7 with enlarged view, and tubular pin 5 is anchored on the anchor station of blind hole 2.For producing this grappling, adopt following method.

At first, taper enlarges the left end that part 7 is engaged in tubular pin 5, and then, this end engages in blind hole 2, is against the end 4 in this hole up to protuberance 11.Then, apply a strength along shaft axis 12 on tubular pin 5, insert in the tubular pin to force taper to enlarge part, its effect can make tubular pin 5 radially enlarge in the material production with taper expansion part 8 places of having an effect.

The location situation of each member after Fig. 2 has shown in tubular pin 5 is anchored on hole 2.Under this situation, though maximum diameter end 10 its diameters that enlarge part 7 have penetrated in the pipe end 6 greater than the internal diameter of tubular pin 5.So that the circumference of tubular pin 55 ' locate to form garden week bead.This bead makes the side-wall material distortion of blind hole 2, cooperates with bead so form a circular groove.

In addition, the larger diameter end 10 that enlarges part 7 is imbedded in the inwall of tubular pin 5.

And, the zone 5 of tubular pin 5 ", the position bead 5 ' and the ingress of blind hole 2 between, in Guan Ding, also suffer one radially to enlarge during the shift-in in the taper 8 that enlarges part.Therefore, zone 5 " is pressed against on the wall of blind hole by taper 8 consumingly.This pressure reduces gradually to the blind hole inlet.

Therefore, tubular pin 5 very firmly is anchored in the blind hole 2, is impossible because of the anything unexpected situation makes metalwork 1 throw off from tubular pin 5.

Represent with α by taper 8 and axis 12 formed angles.Advantageously select this angle, be approximately 2% gradient.

The wall thickness 8 of tubular pin 5 enlarges the ratio of 10 of the major diameters of parts 7, is selected in 0.15 to 0.08 the scope favourablely, but is preferably between 0.13 and 0.10.

In example shown in Figure 3, has omitted at knob position 11, and the larger diameter end 10 that enlarges part 7 is big than footpath within the tubular pin 5 in fact.

Enlarge the end face of the taper of part 7 towards the tubular pin 5 of engagement blind hole 2 in, its is on the one hand 5 " be on the periphery of tubular pin and form an annular flange, on the other hand, the corresponding circular groove that mates that forms on blind hole 2 cylindrical wall.In addition, again under the effect of the taper 8 that enlarges part 7, make to be in the 3rd Fig. 5 " zone 5 on ' the right " and to be enlarged part 7 compressings by this and be against on the sidewall in hole 2, as Fig. 2 situation, this compresses strength to decrescence right-hand.

According to the embodiment of Fig. 4, be situation corresponding to the chain belt that forms the formation of three row hinge chains, side row hinge chain 14 in its tool both sides row hinge chain 1 and one.In this embodiment, each tubular pin is anchored in two relative blind holes 2, promptly at each metalwork 1 a tubular pin grappling is arranged respectively.And middle row hinge chain 14 is installed and can freely be rotated according to tubular pin 5.

One taper enlarges the end engagement of part 7 and each tubular pin 5, and these enlarge part 7, has a garden frustoconical projection 11 ' be pressed on the bottom 13 of corresponding blind hole 2 in its larger diameter end.Certainly, two expansion parts, 7 its tapered directions are opposite, the length that enlarges part 7 is advantageously selected to, when pressure acts on the two relative hinges 1 simultaneously, two smaller diameter end 9 that enlarge part 7 are touched mutually, can make tubular pin 5 radially enlarge the value that reaches expectation like this, guarantee that these tubular pin in hinge 1 reach grappling in a manner described at the diameter place that enlarges part 7.This assembling that enlarges part 7 can be to form with one heart in tubular pin to a certain degree.

Fig. 5 is the another kind of embodiment of Fig. 4, replaces freely rotating on tubular pin 5 with single middle row hinge chain 14 in this figure, can finish it by this row of plural number, is three row hinge chains in this example.These intermediary element are passed on tubular pin 5.

And of the present invention does not limit to the situation of the watch chain of being made up of hinge.The present invention need on the day object to can be applicable to a peg is anchored on any situation in the blind hole reliably.

Must be pointed out that embodiment of the present invention has following effective characteristics;

1. grappling is clamped at the bottom of the hole basically, and this is favourable one side.

2. during fabrication, can give some members of assembling earlier, and then finish combination.

3. it is opposite that program is finished in described design and traditional manufacturing, because the peg in this case has a minor diameter, it is little than the bore dia of grappling.

Claims (11)

1, a kind of device, contain in the blind hole (2) of at least one object (1) peg anchored (5), wherein peg (5) is a tubulose, device comprises at least one expansion part of frustoconical, the Duan Nei And and the blind hole (2) that are arranged on tubular pin (5) are intermeshed, the position, the big end of cone (11) that enlarges part (7) exceeds the outer And of this end of tubular pin (5) and the end conflict of blind hole (2), and be engaged at least one zone (5) of the tubular pin (5) of this blind hole (2) ', (5) " radially enlarge so that guarantee grappling in blind hole.

2, device as claimed in claim 1, the part of tubular pin (5) and blind hole (2) engagement wherein has a ring-type bead (5) that enlarges ' mate with the corresponding annular slot (5) ' each other of the sidewall of blind hole (2).

3, device as claimed in claim 1 or 2, the conical surface (8) that wherein enlarges part (7) is 2% with respect to the gradient of the axis 12 that enlarges part.

4, the described device of arbitrary as described above claim, wherein the thickness of tubular pin (5) enlarges the ratio of maximum diameter (10) of part 7 between 0.15 and 0.08 with respect to butt.

5, device as claimed in claim 4, wherein the thickness of tubular pin (5) enlarges the ratio of maximum diameter (10) of part (7) between 0.13 and 0.10 with respect to taper.

6, the described device of arbitrary as described above claim, comprise that butt expansion part (7) and its two ends of tubular pin (5) of blind hole (2) engagement of a separate pieces (1) mesh together respectively, wherein two opposite ends (9) of two tapers expansion parts (7) contact with each other.

7, the described device of arbitrary as described above claim, rotatable hinge by plural number arrangement parallel to each other constitutes a chain belt, wherein tubular pin (5) effluxes two with its anchored ends in the blind hole of hinge of (1), and row's (14) hinge passes these tubuloses Ding And and can freely rotate thereon wherein.

8, the interior method of garden post blind hole (2) of an object (1) is gone in a kind of at least one end grappling with a tubular pin (5), wherein an at least one end that enlarges part (7) at least a portion and tubular pin (5) is meshing with each other, the site of action of this expansion part (7) becomes butt shape, and this expansion part (7) has a position (11), when tubular pin (5) and after enlarging part (7) and blind hole (2) in, meshing fully, in order to locate at the end (4) that is pressed on blind hole (2), wherein one radially the expansion section (5 ', 5 ") be the position that tubular pin (5) meshes in blind hole (2); use axial force and force expansion part (7) to be imbedded in the tubular pin (5), tubular pin Jing powerfully be pressed into this expansion section the sidewall (3) of blind hole (2) to Kuo Da And.

9, method as claimed in claim 8, wherein with the part of the tubular pin (5) of blind hole 2 engagement in, have at least a position form ring-type bead 5 ', produced by acting on the axial force that enlarges part, this bead forms a circular groove accordingly at the sidewall of blind hole (2) again.

10, as each described method in the claim 7 to 9, the two ends of using a tubular pin (5) respectively are anchored in the blind hole of two separate pieces (1), and this separate pieces (1) toward each other, wherein make tubular pin resist the sidewall (3) of blind hole (2) to make radially enlarged strength, be applied to simultaneously on these two objects in opposite directions along the center line of tubular pin 5.

11, one group of interior device of cylindricality blind hole (2) that tubular pin (5) is anchored on an object (1), this device comprises that a tubular pin (5) and is matched with the expansion part (7) of tubular pin one end, this enlarges part and becomes frustoconical (8), it is of a size of: when enlarging part (7) engagement in an end of tubular pin (5) fully, its maximum diameter end has a position and protrudes in outside the tubular pin (5), and when this end of this tubular pin when enlarging in the wedged hole of part, the expansion part top of this end of tubular pin is pressed on the bottom (4) of blind hole (2), and wherein except tubular pin is done the radially expansion, this enlarges part to exceed in this end that can not enter tubular pin.

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