CN108119467A - Tubular rivet - Google Patents
Tubular rivet Download PDFInfo
- Publication number
- CN108119467A CN108119467A CN201611073362.9A CN201611073362A CN108119467A CN 108119467 A CN108119467 A CN 108119467A CN 201611073362 A CN201611073362 A CN 201611073362A CN 108119467 A CN108119467 A CN 108119467A
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- Prior art keywords
- axle portion
- rivet
- rivet body
- mandrel
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- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 41
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The present invention provide a kind of gap that can be ensured with lower price between multiple member for mount, make a member for mount combined compared with another member for mount after, the tubular rivet that mutually can pivotally be connected around rivet body axle portion.Tubular rivet (1) is made of the hollow rivet body (2) with flange (6) and the mandrel (3) being inserted into the hollow hole of the rivet body；The face facing with the end (7) of rivet body axle portion (5) of mandrel head (10) is formed inclined-plane (14), it is inclined towards the diameter diameter mandrel axle portion also smaller than the internal diameter of rivet body axle portion with the roughly equal major diameter part of rivet body axle portion outer diameter from diameter；Circumferential grooves (15) are formed on the outer circumferential surface of rivet body axle portion (5), it is on the length for leaving flange (6) position more somewhat longer than the thickness of member for mount；The breaking portion (11) of mandrel axle portion is made into makes its fracture by power as described below, i.e., this power makes the expanding deformation of the part rivet body axle portion from end (7) to circumferential grooves (15) of rivet body axle portion but the almost unchanged shape of part rivet body axle portion from circumferential grooves (15) to flange (6).
Description
Technical field
The present invention relates to tubular rivets, it is the heart by rivet body and the length being inserted into the hollow hole of this rivet body
Axis is formed；It is to make the axle portion of rivet body that expanding deformation occur by this mandrel is haled, by this deformation axle portions and flange
It is installed on the member for mount such as panel.In more detail, the present invention is a kind of tubular rivet that can serve as revolution axle portion,
It will can pivotally stay in this track (electricity) road for the ejector that printed wiring board is inserted into framework or is therefrom extracted
On plate.
Background technology
This tubular rivet described below be early it is known that i.e., it be to be made of rivet body and mandrel, rivet sheet
Body is made of the hollow metal that the flange of axle portion and this axle portion one end forms and mandrel is then inserted into this rivet body
It is in emptying aperture, be made of the metal also longer than this rivet body；Above-mentioned tubular rivet be mandrel is inserted in rivet body,
The head formed on mandrel one end is made to be located on the end of the rivet body axle portion of side opposite with rivet body flange, center roller
Carrying out strength makes rivet body axle portion that expanding deformation occur with being stretched to the degree that is broken from breaking portion, by this deformation axle portion portion
Point and flange and be installed on the member for mount such as panel.1 example of this tubular rivet is in Japanese Patent Application
Disclosed in tekiaki 61-171910.This tubular rivet is to solve by member for mount and those low modelings of rigidity
Material products when components with reference to when, due to the mounting hole of member for mount completely through caused by combine it is bad.In mandrel
The 2nd minor diameter without fracture is formed between fracture minor diameter and head in axle portion, in rivet body axle portion and the heart
Reducing diameter part is formed on the 2nd corresponding position of minor diameter of axis axle portion；Shown in Fig. 7, when stretching mandrel, from riveting such as publication
The rivet body axle portion that the reducing diameter part of nail body axle portion starts, makes flange side locally expands increasing earth deformation, at the same time makes
It deforms with stating the part more undergauge of reducing diameter part, even for the relatively low component of the rigidity such as plastic member, can also prevent
The perforation of mounting hole, moreover it is possible to be installed with stronger combination power.And the further undergauge of reducing diameter part of rivet body axle portion and
It combines closely with the 2nd minor diameter of mandrel axle portion, it can will not be with lost motion by post-rift mandrel head and short axle portions
It is maintained in rivet body axle portion, can prevent that noise occurs after combining.
A kind of tubular rivet with cap is disclosed in Japanese Patent Application Laid-Open 7-180712.At this
The rivet body of a tubular rivet is equipped with the plastic cap of tubular.Circumferential grooves are formed in rivet body axle portion, in cap
Inside form the protrusion chimeric with above-mentioned circumferential grooves, foring makes cap will not be from the structure that rivet body axle portion comes off.
The rivet body axle portion between circumferential grooves and mandrel head is made locally to expand, just can synergistically be pacified with flange with the relatively strong power that combines
It is attached on member for mount.One kind is disclosed in Japanese Patent Application Laid-Open 5-209610 in rivet body axle portion
The upper tubular rivet for forming 2 circumferential grooves.Rivet sheet as shown in Fig. 2~Fig. 4 of publication, between 2 circumferential grooves are made
When body axle portion locally expands, this tubular rivet synergistically can be installed to member for mount with stronger combination power with flange
On.Arbitrary 1 in tubular rivet described in above-mentioned 3 publications can with stronger combination power, with for example 2 mounted structures
Part combines, this 2 member for mount are firmly fixed.
These above-mentioned pervious tubular rivets are suitable for several member for mount being mutually firmly attached.Even if these are empty
Heart rivet can serve as revolution axle portion, can be used in and pivotally stay the ejector that printed wiring board is inserted into framework or is therefrom extracted
It is firmly fixed in this printed wiring board, but still by ejector and printed wiring board, ejector is compared with printed wire
The revolution of plate is difficult, is not suitable for revolution axle portion.
Japanese Patent Application Beneficial 6-78610 (invention registration the 2607070th) though number tubular rivet recorded
It can so be mounted on for example 2 member for mount such as ejector and printed wiring board, still, it is in order to ensure two are mounted
Gap between component, after the member for mount of a side is combined compared with the opposing party's member for mount, in rivet body
The connection of phase mutual energy revolution is formed around axle portion.On this tubular rivet, from 2 member for mount thickness for leaving flange
The rivet body axle portion of partial position to end is formed thin-walled, thus is easier to deform than other axle portions.Work as drawing
When stretching mandrel, mandrel head is first acted in thin-walled portion, this thin-walled portion is made to deform expandingly, still, 2 member for mount
The rivet body axle portions of caliper portion do not deform.In such a state, when further stretch, No. 0018 of such as publication
Mandrel is broken by the impact force formed described in paragraph, by the variation of wall thickness, the rivet body of 2 member for mount caliper portions
Axle portion still without deformation and leave, 2 member for mount by rivet body axle portion thin-walled portion expanding deformed part and
Flange and be connected with each other.Due to can ensure that the length rivet body axle portions longer than the thickness of member for mount do not become
Shape, thus around rivet body axle portion, the member for mount of a side just can relatively return with the member for mount of the opposing party
Turn.But this tubular rivet must form certain length on the end of rivet body axle portion (one end opposite with flange)
Thin-walled portion.It would therefore be desirable to have the equipment or process for forming thin-walled portion, it is impossible to be effectively performed production, production efficiency compared with
Difference also just improves the price of tubular rivet.
The content of the invention
The present invention makes to overcome the above-mentioned problems of the prior art, and the purpose is to provide a kind of low price
Tubular rivet, it be by a member for mount compared with another member for mount combine after, in rivet body axle portion
Around, can mutually pivotally connect.
The tubular rivet of the present invention made in order to achieve the above object, it is by hollow rivet body and insertion
Mandrel in the hollow hole of the rivet body, also longer than above-mentioned rivet body is formed, and above-mentioned hollow rivet body is by axle portion
It is formed with the flange of the axle portion one end；Be the head formed on above-mentioned mandrel one end is inserted into it is opposite with the flange of rivet body
The rivet body axle portion end of side makes mandrel axle portion carry out strength drawing to above-mentioned mandrel with being broken since the breaking portion of minor diameter
It stretches, the generation of rivet body axle portion is made to deform expandingly, by mounted structures such as the axle portion of this deformed part and above-mentioned flange counter plates
Part is installed；The face opposite with the end face of above-mentioned rivet body axle portion of above-mentioned mandrel head is formed inclined-plane, it be from
Diameter and the roughly equal major diameter part of the rivet body axle portion outer diameter towards diameter than the rivet body axle portion internal diameter also
Small diameter mandrel axle portion is inclined；Circumferential grooves are formed on the outer circumferential surface of above-mentioned rivet body axle portion, it is to leave
On the length of the above-mentioned flange position more somewhat longer than the thickness of above-mentioned member for mount；The above-mentioned breaking portion of mandrel axle portion
It is to make its fracture by power as described below to be made into it, i.e., this power make rivet body axle portion since above-mentioned end to above-mentioned
The part rivet body axle portion of circumferential grooves is expanding to be deformed but from above-mentioned circumferential grooves to the part rivet of above-mentioned flange
The almost unchanged shape of body axle portion.
In such tubular rivet, when rivet body axle portion is inserted into the mounting hole of multiple member for mount, is used
When combination tool stretches mandrel, the inclined-plane of mandrel head make rivet body axle portion from end side proceed by it is expanding deform, when
When this deformation reaches the circumferential grooves part of rivet body axle portion, stop expanding deformation there, this expanding deformation is hardly
The rivet body axle portion effect ground of the flange side later to circumferential grooves makes mandrel axle portion be broken from breaking portion.It is multiple to be pacified
Dress component is connected by the above-mentioned expanding part rivet body axle portion deformed with the flange of rivet body, due to from flange to week
It is made to the axle portion length of groove also longer than member for mount thickness, thus 1 member for mount can be made in rivet body axle portion
Surrounding is turned round compared with another member for mount.Particularly that in member for mount of tubular rivet body axle portion
Part only positively carries out expanding change without expanding deformation in the end side rivet body axle portion since circumferential grooves
Shape, thus can really pivotally combine member for mount.It and need not be by the rivet body axle portion shape of this tubular rivet
Into the process and equipment of the thin-walled portion of specific length, as long as the simple landform on the assigned position of rivet body axle portion outer circumferential surface
Circumferentially groove, thus its manufacture is also simple, can provide tubular rivet with relatively low price.
In above-mentioned tubular rivet, the disruptive force of the breaking portion of mandrel axle portion, which is chosen to be, to be about discussed further below counting
Value, i.e. when being combined in the state of no member for mount, make circumferential grooves to the part rivet body axle portion of flange
The 2/3 of the minimum disruptive force of expanding deformation.Moreover, the inclined-plane of mandrel head is preferably cone.And above-mentioned circumferential grooves
It is to be simply formed at rolling forming or deep-drawing technique on the assigned position of rivet body axle portion outer circumferential surface.
Description of the drawings
Fig. 1 is the front view of the tubular rivet of 1 embodiment of the invention, is to represent half cross-section diagram of rivet body.
Fig. 2 is for the front view of the mandrel of tubular rivet shown in Fig. 1.
Fig. 3 be the tubular rivet for the comparative example 1 that circumferential grooves are not formed in rivet body axle portion partial elevation view,
And the partial elevation view of the tubular rivet of the comparative example 2 of circumferential grooves is formed in rivet body axle portion.
Fig. 4 is to represent respectively combining the tubular rivet of comparative example 1 (solid line) shown in Fig. 3 and comparative example 2 (dotted line)
Occasion under, stroke length (mm) compared with mandrel drawing force (kN) characteristic chart.
Fig. 5 is represented under the occasion of no member for mount, respectively by 1 tubular rivet of comparative example shown in Fig. 3 and ratio
The partial elevation view for the action that tubular rivet compared with example 2 is carried out when combining.
Fig. 6 is represented the tubular rivet of 1 tubular rivet of comparative example shown in Fig. 3 and comparative example 2 and mounted structure respectively
The schematic diagram for the action that part is carried out when combining.
Fig. 7 is the partial elevational for representing not formed the tubular rivet of the comparative example 3 of circumferential grooves in rivet body axle portion
Figure and in rivet body axle portion formed circumferential grooves comparative example 2 tubular rivet partial elevation view.
Fig. 8 is represented respectively by (solid line) tubular rivet of comparative example 3 shown in Fig. 7 and the embodiment of the present invention (dotted line)
Tubular rivet combine occasion under, stroke length (mm) compared with mandrel drawing force (kN) characteristic chart.
Fig. 9 is represented under the occasion of no member for mount, respectively by 3 tubular rivet of comparative example shown in Fig. 7 and this
The partial elevation view for the action that the tubular rivet of the embodiment of invention is carried out when combining.
Figure 10 is represented the tubular rivet of 3 tubular rivet of comparative example shown in Fig. 7 and the embodiment of the present invention and 2 respectively
The schematic diagram for the action that member for mount is carried out when combining.
Specific embodiment
In the following, illustrate 1 embodiment of the present invention with reference to attached drawing.Fig. 1 shows the hollow of embodiment of the present invention
Rivet 1.Fig. 2 is after tubular rivet 1 shown in FIG. 1 removing rivet body 2, the independent schematic diagram for representing mandrel 3.In Fig. 1
In Fig. 2, the rivet body 2 made of hollow metal of tubular rivet 1；Be inserted in it is in the hollow hole of rivet body 2, ratio
The also long mandrel 3 of rivet body 2 is formed.For example mandrel 3 is made of hard steel wire, and rivet body 2 is made of aluminium alloy.
Rivet body 2 is made of the flange 6 being relatively large in diameter of 5 one end of axle portion 5 and axle portion, integrally make it is hollow, make energy
Mandrel 3 is accommodated, the end 7 with the rivet body axle portion of 6 opposite side of flange is opening.In the rivet body 2 of diagram, flange
6 are made as circular, and axle portion 5 is made as columnar cylindrical body.As depicted in figs. 1 and 2, mandrel 3 is by than rivet body axle portion 5
Also grow the roughly equal or slightly slightly bigger major diameter of the diameter of the end 7 of many axle portions 9, diameter and rivet body axle portion 5
Head 10 formed, the junction section of head 10 and axle portion 9 forms the diameter breaking portion 11 smaller than axle portion rest part.Although
The position of the breaking portion 11 of minor diameter be it is arbitrary, still, when on the position that it is formed in shown in present embodiment, by
It can be recovered in post-rift mandrel 3 in the recycling bins of combination tool, thus can almost recycle the major part of mandrel 3, can keep
The higher rate of recovery.The 2nd small diameter portion 13 is adjacently formed in mandrel axle portion 9, with breaking portion 11, its diameter is than fracture
Part is big and smaller than mandrel other axle portions.The length of the axle portion 9 of mandrel is made as protruding from rivet body flange 6,
And this protrusion can fully be held by the holding component of the front end of combination tool (not represented in figure).Before mandrel
Make the tapered shape that can be easily inserted into the front end of combination tool in end.
In the present invention, the facing surface beveling in the end 7 of the axle portion 5 with rivet body 2 of mandrel head 10
14, it is than rivet body axle portion 5 from the roughly equal major diameter portion of the outer diameter of outer diameter and rivet body axle portion 5, to internal diameter
The also small mandrel axle portion 9 of internal diameter (being breaking portion 11 in the present embodiment) is inclined.It can be with although the shape on inclined-plane 14 is
Arbitrarily, but it is preferably make can simply form it is coniform.Pyramid-shaped can certainly be formed or can be formed from big
Diameter portion is connected hemispherical with mandrel axle portion 9.When center roller axle portion, which carries out strength, to be stretched, by the work on this inclined-plane 14
With making the end 7 of rivet body axle portion 5 that expanding deformation occur.
On the outer circumferential surface of the axle portion 5 of rivet body 2, the distance of flange 6 is being left substantially than the thickness of member for mount
Equal length slightly away from position on form circumferential circumferential grooves 15.In more detail, circumferential grooves 15 are formed in
On such position, i.e., also longer than the thickness of slab that multiple member for mount are added in the distance of leaving flange 6 and can ensure that revolution
As gap on the position of length.It can be for example simply formed at rolling forming or deep-drawing technique, by circumferential grooves 15
On the assigned position of rivet body axle portion outer circumferential surface.Circumferential grooves 15 be arranged in this way, i.e., at circumferential grooves 15, rivet shaft
The intensity of the other parts of the intensity ratio rivet body axle portion of portion's part is lower slightly；It has can be used as rivet body shaft
The effect of the expanding deformation starting point in portion 5.More specifically, the breaking portion 11 of mandrel axle portion 9 be to be formed it is such, i.e., fracture
It is to be broken its by such power to divide, although this power makes the end 7 of rivet body axle portion 5 arrive the part of circumferential grooves 15
The expanding deformation of rivet body axle portion, but the part rivet body axle portion from circumferential grooves 15 to flange 6 does not almost deform.
In present embodiment, the disruptive force of the breaking portion 11 of mandrel axle portion is chosen to be numerical value as described below, i.e., be about not by
When being combined in the state of installation component, make the part rivet body axle portion from circumferential grooves 15 until flange 6 expanding
The 2/3 of the minimum disruptive force of deformation.
By the use of above-mentioned such tubular rivet 1 can using rivet body axle portion 5 as axis and pivotally, a printed wire will be used for
Plate is inserted into the 1st member for mount phases such as the 2nd member for mount such as framework and the ejector that is pulled out and above-mentioned printed wiring board
Connection.It is to be combined thickness of slab than the 1st installation component and the 2nd installation component that circumferential grooves 15, which are formed in and leave the distance of flange 6,
On position that is also long and can ensure that the gap of revolution.It is pre-formed to be packed into rivet body on two member for mount
The mounting hole of axle portion 5.In the state of the two mounting holes is made conformably to support two member for mount, tubular rivet 1 is inserted
Enter mounting hole.In detail, it is to be inserted into mounted structure using the head 10 of mandrel 3 as foremost, by the axle portion 5 of rivet body 2
It is contacted in the mounting hole of part, until with 6 face of flange.This insertion can hold tubular rivet 1 with hand and be inserted into mounting hole；
It can also be carried out in a state that the mandrel axle portion 9 of tubular rivet 1 is maintained on combination tool.It is kept by tubular rivet 1
When on combination tool, when also tubular rivet 1 is inserted into mounting hole with hand in this state, by the axle portion 9 of mandrel 3
Part hold in the state of combination tool front end, make combination tool act after, mandrel axle portion 9 is made to be sent out in its breaking portion 11
Strength stretching is carried out to raw breaking degree to it.
When mandrel axle portion 9 is stretched, the inclined-plane 14 of mandrel head 10 can make rivet body axle portion 5 since 7 side of end
It deforms expandingly, thus this deformation makes the rivet before 6 side of flange until 15 part of circumferential grooves of rivet body axle portion 5
The part of body axle portion does not almost deform.I.e., circumferential grooves 15 as expanding deformation inflection point, i.e., have and expanding deform
The effect of point.Breaking portion 11 is made to be broken by power as described below, i.e., this power make rivet body axle portion 5 from end 7
Part rivet body axle portion to circumferential grooves 15 carries out expanding deformation, but from circumferential grooves 15 to the part of flange 6
The almost unchanged shape of rivet body axle portion.The rivet body axle portion 5 of tubular rivet 1, the caliper portion in member for mount as a result,
Without expanding deformation on (part between circumferential grooves 15 and flange).Moreover, the axle portion between circumferential grooves 15 and flange 6
5 length make it is also longer than the thickness of slab that the 1st member for mount and the 2nd member for mount are combined, have can ensure that revolution use
Gap length.When for example thickness of slab is 4mm, the position of circumferential grooves 15 be formed in leave flange 6 be 5mm position on.Cause
This, can not only link together the 2nd member for mount such as the 1st member for mount such as printed wiring board and ejector, Er Qieneng
Make the 2nd member for mount such as ejector, be mounted using rivet body axle portion as rotating shaft compared with printed wiring board etc. the 1st
Component is turned round；Further, since the part rivet body axle portion of 7 side of end since circumferential grooves 15 can positively expand
Footpath deforms, thus the connection of two member for mount can be carried out positively.As long as again because forming the mandrel head of tubular rivet
Shape and the circumferential grooves that formed in rivet body axle portion, thus its manufacture be also it is simple, can be with relatively low valency
Lattice provide tubular rivet.
In the following, with reference to Fig. 3~Figure 10,1~comparative example of comparative example 3 and the embodiment of the present invention are illustrated.Fig. 3 tables
The tubular rivet 17 of comparative example 1 and the tubular rivet 18 of comparative example 2 are shown, the former is circumferential without being formed in rivet body axle portion
The intensity of groove and the breaking portion of mandrel axle portion is higher；The latter forms circumferential grooves 15 but the fracture of mandrel axle portion
The intensity divided is higher.Fig. 4~Fig. 6 represents the implementation data and result on comparative example 1 and comparative example 2.Fig. 7 represents comparative example 3
Tubular rivet 19 and embodiment of the present invention tubular rivet 21, although the intensity of the former mandrel breaking portion is approximately to compare
The 2/3 of example 1 and 2, but do not form circumferential grooves；The intensity of the mandrel breaking portion of the latter be approximately comparative example 1 and 2 2/3,
And form circumferential grooves 15.Fig. 8~Figure 10 is represented on comparative example 3 and the implementation data and result of the embodiment of the present invention.
In terms of the material of the above-mentioned tubular rivet having been carried out, rivet body be that aluminium alloy, mandrel are made by hard steel wire.And
The size of various pieces：The axle portion length of rivet body is 6.4mm；Flange is that a diameter of 6.4mm, thickness are the circles of 0.9mm；
Circumferential grooves 15 are formed on the position for leaving flange surface 5.0mm.In the tubular rivet 18 and the embodiment of the present invention of comparative example 2
Tubular rivet 21 on formed circumferential grooves 15, do not have on the tubular rivet 17 of comparative example 1 and the tubular rivet 19 of comparative example 3
Form circumferential grooves 15.The inclination of part axle portion length formation 26mm, the inclined-plane of mandrel head that the slave flange of mandrel protrudes
It is about 30 degree to be set to compared with the end face of rivet body axle portion.Moreover, Fig. 6 and printed wiring board shown in Fig. 10 etc. the 1st
The thickness of 2nd member for mount 23 such as member for mount 22 and ejector is chosen to be 4.0mm.These implement size only to this
Invention is used as referring to when being compared discussion, and the invention is not limited in these sizes.
It is illustrated with initial reference to Fig. 3~Fig. 6, to the tubular rivet 17 of comparative example 1 and the tubular rivet 18 of comparative example 2.This
The disruptive force of the minor diameter breaking portion (breaking portion 11 referring to Figures 1 and 2) of the mandrel axle portion of a little tubular rivets 17 and 18
It is representative value now used；As shown in the graph of fig. 4, combination tool center roller drawing force is configured to about 3kN
With regard to fracture.Fig. 4 is the chart of stroke length when representing with combination tool, stretching mandrel axle portion and mandrel drawing force at that time.
In the graph shown in figure 4, curve 17a indicated by the solid line is the characteristic for the tubular rivet 17 for representing comparative example 1；With dotted line table
The curve 18a shown is the characteristic for the tubular rivet 18 for representing comparative example 2.In these curves, it is maximum when stroke is more than 5mm
Drawing force be approximately 3.2kN, hereafter, when dropping to substantially 0kN represent mandrel fracture.Although two curves 17a and 18a are big
Identical curve is caused, but is provided with first being broken than curve 17a for the tubular rivet 18 of circumferential grooves 15.This is because in hollow riveting
On nail 18, by the effect of circumferential grooves 15 starting point of expanding deformation is made to be scheduled on the position of circumferential grooves 15, make the middle part of there
Point become very thin, mandrel head does not enter rivet body axle portion from 15 part of circumferential grooves and begins to be broken；In contrast,
Due to not having circumferential grooves on tubular rivet 17, mandrel head needs are entered than the rivet behind 15 present position of circumferential grooves
Just start to be broken after body axle portion.
Fig. 5 is represented when stretching mandrel in the state of no member for mount, making tubular rivet 17 and 18 expanding deformation
State.By the tubular rivet 17 of comparative example 1 as it can be seen that expanding be deformed to close to flange 6, mandrel head of rivet body axle portion 5 enters
Just start to be broken after in rivet body axle portion.In contrast, shown in the tubular rivet 18 of comparative example 2 in circumferential grooves
Center section at 15 attenuates really, the expanding starting point to attenuate is scheduled on 15 present position of circumferential grooves.And the riveting below this
The 5 also expanding deformation of body axle portion is followed closely, this is because the strength values of the breaking portion of mandrel axle portion are set to the rivet sheet than it
The part that body axle portion carries out expanding deformation is also high.
Fig. 6 represents to overlap the 2nd member for mount 23 such as ejector on the 1st member for mount 22 such as printed wiring board,
Respectively by tubular rivet 17 and tubular rivet 18 with reference to and connect the appearance of two member for mount.The hollow riveting of comparative example 1
Nail 17 by the expanding deformed part 25 of rivet body flange 6 and rivet body axle portion, make two member for mount 22 and 23 mutual
Fasten connection with combining closely.Particularly as shown in the rivet body axle portion 5 of the tubular rivet 17 of Fig. 5, due to rivet body shaft
Portion also carries out expanding deformation in the mounting hole of member for mount, thus is very big to the fastening power of two member for mount.
Therefore using rivet body axle portion as rotating shaft the 2nd member for mount 23 cannot be made to be returned compared with the 1st member for mount 22
Turn.The tubular rivet 18 of comparative example 2 makes two to be pacified by the expanding deformed part 26 of rivet body flange 6 and rivet body axle portion
Component 22 and 23 is filled to be connected with each other.25 phase of expanding deformed part of the expanding deformed part 26 of tubular rivet 18 and tubular rivet 17
Than, formed on the top of the 2nd member for mount 23.However, in the tubular rivet 18 of comparative example 2, also such as the tubular rivet of Fig. 5
Shown in 18 rivet body axle portion 5, since rivet body axle portion also carries out expanding deformation in the mounting hole of member for mount, because
And the fastening power of two member for mount is very big.Therefore using rivet body axle portion as rotating shaft the 2nd cannot be made to be mounted
Component 23 is turned round compared with the 1st member for mount 22.
In the following, with reference to Fig. 7~Figure 10, to the tubular rivet 19 of comparative example 3 and the tubular rivet 21 of the embodiment of the present invention
It illustrates.Breaking portion (the fracture referring to Figures 1 and 2 of the minor diameter of the mandrel axle portion of these tubular rivets 19 and 21
The intensity of disruptive force 11) is divided to be set to about the 2/3 of the tubular rivet for being comparative example 1 and 2.The particularly embodiment of the present invention
Tubular rivet 21, it be that its broken terrain is made into breaking portion by power as described below, i.e., this power make rivet body axle portion
15 part rivet body axle portion occurs expanding deformation but from circumferential grooves 15 to flange 16 from end to circumferential grooves
The almost unchanged shape of part rivet body axle portion；As shown in the figure, circumferential grooves are not formed on the tubular rivet 19 of comparative example 3, and
Circumferential grooves 15 are formed on the tubular rivet 21 of the present invention.The position of this circumferential grooves 15 is in since flange 6, length
On the position (5mm) of the position equal with member for mount thickness (4mm) also slightly a little further.
Fig. 8 shows the stroke length stretched with combination tool center roller axle portion and at this moment the figure of mandrel drawing force
Table.Curve 19a in chart shown in Fig. 8, indicated by the solid line is the characteristic for the tubular rivet 19 for representing comparative example 3；With void
The curve 21a that line represents is the characteristic for representing the tubular rivet 21 of the present invention.In the tubular rivet 19 of comparative example 3, substantially
There is the maximum generally drawing force of 2.1kN at the stroke of 4mm, drawing force falls to 0kN after this, this represents that mandrel is broken
It splits.In contrast, in the tubular rivet 21 of the present invention, the big of maximum will be formed (about at 3.8mm) before stroke reaches 4mm
Cause is the drawing force of 2.1kN, and drawing force falls to 0kN after this, and at this moment mandrel is broken.I.e., tubular rivet 21 of the invention
It is first broken than tubular rivet 19.This is because the tubular rivet 21 of the present invention is subject to the effect of circumferential grooves 15, makes expanding deformation
Starting point be scheduled on the position of circumferential grooves 15, the middle part of there thus made fully to attenuate；Make mandrel head 15 not from circumferential direction
The part of groove 15 enters rivet body axle portion and is just broken；In contrast, circumferential grooves are not formed on tubular rivet 19, because
And the rivet body axle portion after mandrel head is entered than circumferential grooves location is just broken.Length 27 shown in Fig. 8
Represent the entrance length of tubular rivet 19.
Fig. 9 is represented in the state of no member for mount, center roller is stretched, and makes tubular rivet 19 and Ben Fa respectively
State during bright 21 expanding deformation of tubular rivet.Appearance as described below as seen from the figure, i.e., the tubular rivet of comparative example 3 19
As shown in part 29, for rivet body axle portion 5 from end to the gently expanding deformation of flange 6, mandrel head enters rivet body
It is just broken after in axle portion.In contrast, tubular rivet 21 of the invention shows that the middle part at circumferential grooves 15 becomes really
Carefully, the starting point of taper portion 30 is scheduled on the position of circumferential grooves 15.Moreover, in the tubular rivet 21 of the present invention, it is circumferential
5 expanding deformation does not occur in the middle part of rivet body of the groove below 15.This is because tubular rivet 21 as described above, of the invention is
The breaking portion being broken is formed by power as described below, i.e., since the end of rivet body axle portion to circumferential grooves 15
Part rivet body axle portion expanding deformation occurs；And the part rivet sheet since circumferential grooves 15 until flange 6
Body axle portion hardly deforms.Since the starting point of expanding deformed part 30 is scheduled on the position of circumferential grooves 15, thus it is expanding
Deformed part 30 can also properly form the shape as baffle ring.
Figure 10 represents to overlap the 2nd member for mount 23 such as ejector on the 1st member for mount 22 such as printed wiring board,
Respectively by comparative example 3 the tubular rivet 19 and present invention tubular rivet 21 combination, make the connection of two member for mount
Appearance.The tubular rivet 19 of comparative example 3 is by the expanding deformed part 29 of rivet body flange 6 and rivet body axle portion by two quilts
Installation component 22 and 23 is connected with each other.The particularly such as expanding deformed part 29 of the rivet body axle portion 5 of the tubular rivet 19 of Fig. 9
It is shown, since rivet body axle portion gently deforms, just occurs slightly entering the position in the mounting hole of member for mount
Expanding deformation, thus two member for mount mutually clampingly connect and install the part axle portion of hole wall and expanding deformation
Between frictional force it is extremely strong.Due between rivet body axle portion and member for mount there are larger frictional force, even if thus,
Using rivet body axle portion as rotating shaft, the 2nd member for mount 23 can not be made to be returned compared with the 1st member for mount 22
Turn.Although in contrast, tubular rivet 21 of the invention by rivet body flange 6 and rivet body axle portion expanding deformed part
30 are connected with each other two member for mount 22 and 23, still, are fitted without the expanding deformation of hole inner wall and rivet body axle portion
Frictional force between part, and gap 31 is formed between the top of the 2nd member for mount 23 and expanding deformed part 30.Cause
This, can using rivet body axle portion 5 as rotating shaft, the 2nd member for mount 23 is made slipperily to be returned compared with the 1st member for mount 22
Turn.Particularly in two 22 and 23 parts of member for mount, the rivet body axle portion 5 of the tubular rivet 21 of the present invention is not made
The expanding deformation of generation, due to since circumferential grooves 15, in the rivet body axle portion of end side positively it is expanding deformation and shape
Into the expanding deformed part of baffle ring shape, thus pivotally two member for mount can be linked together really.Above-mentioned reality
Apply example be the tubular rivet by the present invention for can pivotally connect 2 member for mount, still, it can also connect 3 with
Upper member for mount.
If using the present invention, when stretching mandrel, the inclined-plane of mandrel head rivet body axle portion is made to be opened from end side
Begin to deform expandingly, just stop when this deformation proceeds to the circumferential grooves part of rivet body axle portion, this expanding deformation is to week
The rivet body axle portion of the flange side later to groove, which hardly acts as land used, makes mandrel axle portion be broken from breaking portion, makes multiple
Member for mount is connected by the expanding deformed part of above-mentioned rivet body axle portion with the flange of rivet body, and 1 can be made to be mounted
Component is turned round around rivet body axle portion, compared with another member for mount.Due to tubular rivet body shaft
Portion do not have in member for mount part it is expanding deformation, the end side since circumferential grooves rivet body axle portion positively
Expanding deformation is carried out, thus can really pivotally be combined member for mount.Due to need not be by the rivet of this tubular rivet
Body axle portion forms the process and equipment of the thin-walled portion of specific length, as long as circumferential grooves are simply formed at rivet body
On the assigned position of the outer circumferential surface of axle portion, thus its structure is simple, can provide hollow riveting with relatively low price
Nail.
Claims (4)
1. tubular rivet, also long by hollow rivet body and the above-mentioned rivet body of ratio being inserted into the hollow hole of the rivet body
Mandrel form, above-mentioned hollow rivet body is made of the flange of axle portion and the axle portion one end；It will be formed on above-mentioned mandrel one end
Head be inserted into side opposite with the flange of rivet body rivet body axle portion end position, make mandrel axle portion from minor diameter
Breaking portion start to be broken and carry out strength stretching, rivet body axle portion occurs expanding and deform, axle portion portion is deformed by this
Point and the member for mount such as above-mentioned flange counter plate installed, which is characterized in that above-mentioned mandrel head with above-mentioned rivet sheet
The face that the end face of body axle portion is opposite is formed inclined-plane, from diameter and the roughly equal major diameter portion of the rivet body axle portion outer diameter
Divide towards the diameter diameter mandrel axle portion also smaller than the internal diameter of the rivet body axle portion；In the periphery of above-mentioned rivet body axle portion
Circumferential grooves are formed on face, leave the length of above-mentioned flange than the thickness equal length of above-mentioned member for mount position slightly
It positions away from；The above-mentioned breaking portion of mandrel axle portion is formed as making its fracture by power as described below, i.e., this power make rivet
The rivet body axle portions since above-mentioned end to above-mentioned circumferential grooves of body axle portion carry out expanding deformation but from upper
The rivet body axle portions for stating circumferential grooves to above-mentioned flange hardly deform.
2. tubular rivet as described in claim 1, which is characterized in that the disruptive force of the above-mentioned breaking portion of above-mentioned mandrel axle portion
It is chosen to be numerical value as described below, i.e. when being combined in the state of no member for mount, make above-mentioned circumferential grooves to upper
State about the 2/3 of the minimum disruptive force of the expanding deformation of part rivet body axle portions of flange.
3. tubular rivet as claimed in claim 1 or 2, which is characterized in that the inclined-plane of above-mentioned mandrel head is conical.
4. the tubular rivet as described in any one in claims 1 to 3, which is characterized in that above-mentioned circumferential grooves are with rolling
Shaping or drawing are formed on the outer circumferential surface assigned position of rivet body axle portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073362.9A CN108119467A (en) | 2016-11-29 | 2016-11-29 | Tubular rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073362.9A CN108119467A (en) | 2016-11-29 | 2016-11-29 | Tubular rivet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108119467A true CN108119467A (en) | 2018-06-05 |
Family
ID=62226799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611073362.9A Pending CN108119467A (en) | 2016-11-29 | 2016-11-29 | Tubular rivet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108119467A (en) |
-
2016
- 2016-11-29 CN CN201611073362.9A patent/CN108119467A/en active Pending
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Application publication date: 20180605 |