CN203717600U - Gasket and threaded fastener assembly - Google Patents
Gasket and threaded fastener assembly Download PDFInfo
- Publication number
- CN203717600U CN203717600U CN201320430044.9U CN201320430044U CN203717600U CN 203717600 U CN203717600 U CN 203717600U CN 201320430044 U CN201320430044 U CN 201320430044U CN 203717600 U CN203717600 U CN 203717600U
- Authority
- CN
- China
- Prior art keywords
- packing ring
- threaded fastener
- truing face
- gasket
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 25
- 238000012856 packing Methods 0.000 claims description 98
- 230000003321 amplification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Gasket Seals (AREA)
Abstract
The utility model discloses a gasket (10, 110, 210, 310 or 410) which has a first surface (11, 111, 211, 311 or 411) adjacent to a threaded fastener (2 or 104) and a second correcting surface (12, 112, 212, 312 or 412) abutted with an object 120 fixed in a proper position by the threaded fastener. According to the gasket, the correcting surface is configured to ensure that the initial contact between the gasket and the object (120) occurs at the peripheral edge (12e, 212e, 312e or 412e) of the correcting surface, so that the contact radius between the gasket and the object (120) is maximized and the risk of slip of the gasket during screwing of the threaded fastener (2 or 104) is lowered. The utility model further discloses a threaded fastener assembly comprising the threaded fastener and the gasket.
Description
Technical field
The utility model relates to threaded fastener, more specifically, relates to the improved gasket with threaded fastener coupling.
Background technique
As everyone knows, packing ring is arranged on threaded fastener and by between its fixing object.This packing ring presents with flat disc form conventionally, the central hole that this flat disc has pair of planar parallel to each other and in use extended through by a screw tightening device part.In the situation that fastened tools presents with bolt form, screw rod can extend through central hole, and bolt head can butt in two faces of packing ring one, and the object that another face of packing ring can butt will be fixed.
The problem of the packing ring of prior art is that packing ring can rotate during fastening if use electrical nut tightening tool clamping bolt.This packing ring rotation or the impact of sliding are to reduce clamping force, and in the situation that clamping force reduces, the joint of clamping can lose efficacy.If threaded fastener is in order to the critical component of fixed equipment (such as the attached drive pulley of the motor of Motor Vehicle), this inefficacy meeting is very serious.
Model utility content
The purpose of this utility model is to provide a kind of and overcomes the generation of the problems referred to above or be down to minimum improved gasket and have the threaded fastener assembly of this packing ring, at least to eliminate the clamping force that packing ring rotation during fastening causes, reduces.
According to first aspect of the present utility model, a kind of packing ring using between threaded fastener and the object fixed by threaded fastener is provided, its middle washer has the truing face by the first surface of threaded fastener adjacency and butt object, and the truing face is configured to guarantee the initial peripheral edge place that occurs in the truing face that contacts between packing ring and object.In other words, packing ring produces and initially contacts at the peripheral edge place of the truing face with object.
The truing face can be concave surface.
The truing face can be limited by recessed frusto-conical surface.
The truing face can be limited by concave spherical surface.
First surface can, for substantially flat face, be preferably tabular surface.
First surface can be protruding frusto-conical surface.
First surface can be protruding frusto-conical surface, and the truing face can be recessed frusto-conical surface, and the surface of first surface can be basically parallel to the surface of the truing face.
Preferably, the truing face is limited by recessed frusto-conical surface, and the surface of first surface is parallel to the surface of the truing face.
Initial contact can contact for line.
Packing ring is rigidity substantially.
According to second aspect of the present utility model, provide a kind of threaded fastener assembly, it comprises threaded fastener and the packing ring of constructing according to described first aspect of the present utility model, wherein gaskets limit is between threaded fastener and the object fixed by threaded fastener, wherein, at least during threaded fastener is initially tightened, a part for the first surface of threaded fastener butt packing ring, the object that the peripheral edge butt of the truing face of packing ring is fixed.
Threaded fastener can be for having the bolt of head, and gaskets limit is between the head and object of bolt.
Alternatively, threaded fastener can be nut, and gaskets limit is between nut and object.
Than prior art, packing ring of the present utility model and have the threaded fastener assembly of this packing ring, at least can eliminate the situation that clamping force that packing ring causes by rotation during fastening reduces.
Accompanying drawing explanation
Now with reference to accompanying drawing, by example, the utility model is described:
Fig. 1 be according to second aspect of the present utility model comprise according to the packing ring of first aspect of the present utility model the first embodiment's the side view of fastener assembly;
Fig. 2 is the view along the direction of the arrow Z of Fig. 1;
Fig. 3 a is by the sectional view of packing ring shown in Fig. 1 and Fig. 2;
Fig. 3 b is the zoomed-in view of region shown in Fig. 3 a ' b ';
Fig. 4 illustrates the second embodiment's the side view that belt pulley is fixed to the fastener assembly of axle;
Fig. 5 is the first embodiment's of packing ring shown in Fig. 1 to Fig. 4 schematic cross-section, and the shape of packing ring is shown with amplification form;
Fig. 6 is the second embodiment's of packing ring shown in Fig. 1 to Fig. 4 schematic cross-section, and the shape of packing ring is shown with amplification form; And
Fig. 7 is the 3rd embodiment's of packing ring shown in Fig. 1 to Fig. 4 schematic cross-section, and the shape of packing ring is shown with amplification form.
Embodiment
Referring to figs. 1 through Fig. 3 a and Fig. 3 b, show and comprise threaded fastener that the form with bolt 2 presents and the fastener assembly 1 of packing ring 10.
Bolt 2 has threaded stem 3 and thread head 4.Thread head 4 is for hexagon and have for the flange end 5 of butt packing ring 10 in use.
Packing ring 10 has first surface 11 and second truing face (relieved face) 12, in use, flange end 5 butt first surfaces 11, second truing face 12 has for butt will be fixed on by bolt 2 the peripheral edge 12e of the object of appropriate location, so that packing ring 10 is limited between the thread head 4 and this object of bolt 2.
Packing ring 10 has the outer peripheral surface 14 of the outer diameter " D " that limits packing ring 10 and limits the hole 15 of the inner diameter " d " of packing ring 10.In use, threaded stem 3 extends through the hole 15 of packing ring 10, so that the object such as belt pulley is fixing in position.Chamfering 13 connects the tabular surface 11 and outer peripheral surface 14 of packing ring 10.
In Fig. 3 b, show an optional feature, wherein the step 14s of peripheral edge 12e in the outer peripheral surface 14 of packing ring 10 forms.In this case, the excircle of peripheral edge 12e and packing ring 10 is inconsistent, but with respect to the excircle of packing ring 10 indent location slightly.
Packing ring 10 is thicker for its diameter, so that it can not be out of shape easily under the clamping force being applied by bolt 2, and packing ring 10 substantially can be thought for rigidity during bolt 2 is tightened.That is to say, when packing ring 10 is tightened at bolt 2, amount of deflection is minimum.
The truing face 12 is configured as: when pad 10 is by tighting a bolt 2 while being clamped at first between the flange end 5 of head 4 of bolt 2 and object, and only the peripheral edge 12e of the truing face 12 and clamped object contact.This gasket construction is guaranteed to provide maximum possible radius for the contact position between packing ring 10 and clamped object.Packing ring 10 is very little with initial area of contact between object and be essentially line and contact, thereby greatly increases the load of unit area.
The inventor has been found that if use direct current nut spanner to tight a bolt 2, and the combination of these two kinds of parts is very effective to preventing pad 10 rotations.
In an embodiment of the present utility model, the outer diameter of packing ring 10 is that 40mm, thickness are 6.5mm, the truing face 12 has with respect to being parallel to plane that first surface 11 arranges with 0.2 ° of recessed frusto-conical surface to 0.8 ° of layout, and it makes sliding torque increase by 15% to 20%.That is to say, cause that packing ring 10 slips need more moment of torsion.
With reference to Fig. 4, with respect to aforementioned fastener assembly, show other fastener assembly, it comprises and packing ring 110 referring to figs. 1 through the same or similar parts of parts described in the arbitrary accompanying drawing of Fig. 3 b.
This embodiment and Fig. 1 and unique obvious difference embodiment illustrated in fig. 2 be, in this example threaded fastener by nut 104 and there is the stud 102(of thread head 103 but not the screw rod 2 shown in Fig. 1 and Fig. 2) form.
In Fig. 4, the packing ring 110 identical with aforementioned packing ring essence between or be limited between nut 104 and belt pulley 120, axle 130 is fixed or be clamped to belt pulley 120 by stud 102 and nut 104.Belt pulley 120 has the splined hole for the spline protuberance 132 of engagement shaft 130.
Packing ring 110 has with the truing face (invisible in Fig. 4) of identical before contact belt pulley 120 with by another faces 111 of nut 104 adjacency.
With identical before, the truing face guarantees that initial between packing ring 110 and belt pulley 120 contacts the excircle place that occurs in the truing face, and in this case, the outer peripheral surface 114 of contiguous packing ring 110.
Packing ring 110 is very little with initial area of contact between belt pulley 120 and be essentially line and contact, thereby has greatly increased the load in each unit area.
Fig. 5 to Fig. 7 shows three kinds of possibility structures of packing ring shown in Fig. 1 to Fig. 4 10,110.In each situation, the structure of each packing ring shown in having amplified for illustrative purpose.
In Fig. 5, packing ring 210 has planing surface 211, the truing face 212, hole 215 and the outer peripheral surface 214 of the substantially flat of the central shaft layout that is orthogonal to packing ring 210.In this case, the truing face is limited by recessed frusto-conical surface 212.Frusto-conical surface 212 is arranged with angle θ with respect to the plane that is parallel to tabular surface 211.Angle θ is very little and conventionally in the scope of 0.1 ° to 2.0 °, so that the angle Φ between forming 179.9 ° to 176 °.In an example, use is that the angle of 178 ° has good effect.
The object of recessed frusto-conical surface 212 is, guarantees the initial peripheral edge 212e place that occurs in concave surface 212 that contacts between packing ring 210 and clamped object.In this case, peripheral edge 212e is positioned at the junction point of concave surface 212 and the outer peripheral surface 214 of packing ring 210, thereby maximizes the effective contact radius between packing ring 210 and object that will be clamped.With identical before, packing ring 210 is thicker for its diameter, and it is essentially rigidity while being clamped by threaded fastener (such as bolt or nut) with box lunch.This guarantees to maintain larger effective contact radius during threaded fastener is initially tightened, and owing to applying load, can not occur only in the obvious skew of tightening the packing ring 210 producing during final stage when packing ring 210 slides.
With identical before, packing ring 210 and the initial area of contact being fixed between object are very little, and this contact is essentially line contact, thereby have greatly increased the load in each unit area.
In Fig. 6, packing ring 310 has the first protruding truncated cone plane 311, the recessed truing face 312, hole 315 and outer peripheral surface 314.
In this example, the truing face is limited by recessed frusto-conical surface 312, and wherein frusto-conical surface 312 is arranged with angle θ with respect to the plane that is parallel to plane 311 ', and plane 311 ' is orthogonal to the central shaft of pad 310 and arranges.Angle θ is very little and conventionally in the scope of 0.1 ° to 2.0 °, so that the angle Φ between forming 179.9 ° to 176 °.In an example, use is that the angle of 178 ° has good effect.
The object of recessed frusto-conical surface 312 is, guarantees the initial peripheral edge 312e place that occurs in concave surface 312 that contacts between packing ring 310 and clamped object.In this example, peripheral edge 312e is positioned at the junction point of concave surface 312 and the outer peripheral surface 314 of packing ring 310, thereby maximizes the effective contact radius between packing ring 310 and object that will be clamped.
With identical before, packing ring 310 is thicker for its diameter, is essentially rigidity when it is clamped by threaded fastener (such as bolt or nut) with box lunch.This guarantees to maintain larger effective contact radius during threaded fastener is initially tightened, and owing to applying load, can not occur only in any obvious skew of tightening the packing ring 310 producing during final stage when packing ring 310 slides.
The plane 311 ' that the first protruding truncated cone plane 311 is arranged with the central shaft that is orthogonal to packing ring 310 becomes equal angular θ to arrange.With identical before, angle θ is very little and conventionally in the scope of 0.1 ° to 2.0 °, so that the exterior angle δ between forming 180.2 ° to 184 °.In an example, use is that the exterior angle of 182 ° has good effect.
Therefore, limit the face of the first protruding truncated cone plane 311, be basically parallel to recessed truncated cone plane 312.That is to say, packing ring 310 has roughly homogeneous thickness.
This packing ring can be manufactured in the following manner: first manufacture the complete flat washer of required diameter, then in mould, packing ring is carried out to hot pressing or punching press to generate two frusto-conical surfaces 311,312.By this manufacture method, if produce the outer rim for the restriction of recessed frusto-conical surface 312 by edge step structure shown in Fig. 3 b, be preferable.
In an embodiment of this packing ring 310, the integral diameter of packing ring is that 48mm, thickness are that inclination (θ) between each in 8mm and two frusto-conical surfaces 311,312 and the central shaft that is orthogonal to packing ring 310 plane of arranging is 1 °.
With identical before, packing ring 310 and the initial area of contact being fixed between object are very little, and this contact is essentially line contact, thereby have greatly increased the load in each unit area.
In Fig. 7, packing ring 410 has the first substantially flat surfaces 411, the truing face 412, hole 415 and excircle 414.In this example, the truing face is comprised of concave spherical surface 412.Compared to the situation of using tabular surface, the curvature of spherical calotte 412 can make to generate the spill of 0.2 to the 0.8mm degree of depth.The object of concave spherical surface 412 is, guarantees the initial peripheral edge 412e place that occurs in the truing face 412 that contacts of packing ring 10 and clamped object.In this example, peripheral edge 412e is positioned at the junction point of the outer peripheral surface 414 of conical surface 412 and packing ring 410, thereby maximizes the effective contact radius between packing ring 410 and object.
With identical before, packing ring 410 is thicker for its diameter, is essentially rigidity when it is clamped by threaded fastener (such as bolt or nut) with box lunch.This guarantees to maintain larger effective contact radius during threaded fastener is initially tightened, and owing to applying load, can not occur only in any remarkable skew of tightening the packing ring 410 producing during final stage when packing ring 410 slides.
With identical before, packing ring 410 and the initial area of contact being fixed between object are very little, and this contact is essentially line contact, thereby have greatly increased the load in each unit area.
Although the embodiment who has been fixed to axle with reference to belt pulley is described the utility model, should be appreciated that the utility model can be applied to during threaded fastener is tightened to exist in any use of packing ring sliding problem.
Preferably, pad is thicker, so that it is essentially rigidity, thereby maintains larger contact radius, until eliminate slip risk.
Those skilled in the art should expect, although the utility model is described with example forms with reference to some embodiments, but be not limited to disclosed embodiment, and can construct other embodiment and not depart from the scope being defined by the following claims.
Claims (7)
1. the packing ring using between threaded fastener and the object fixed by described threaded fastener, it is characterized in that, described packing ring has the truing face with object described in the first surface of described threaded fastener adjacency and butt, described packing ring produces and initially contacts at the peripheral edge place of the described truing face with described object, wherein, the described truing face is concave surface, and described first surface is tabular surface.
2. packing ring according to claim 1, is characterized in that, the described truing face is limited by recessed frusto-conical surface.
3. packing ring according to claim 1, is characterized in that, the described truing face is limited by concave spherical surface.
4. packing ring according to claim 1, is characterized in that, described initial contact is line contact.
5. one kind comprises in threaded fastener and claim 1 to 4 the threaded fastener assembly of packing ring described in any one, it is characterized in that, described gaskets limit is between described threaded fastener and the object fixed by described threaded fastener, at least during described threaded fastener is initially tightened, a part for the first surface of packing ring described in described threaded fastener butt, and the object that is fixed of the peripheral edge butt of the truing face of described packing ring.
6. threaded fastener assembly according to claim 5, is characterized in that, described threaded fastener is the bolt with head, and described gaskets limit is between the head and described object of described bolt.
7. threaded fastener assembly according to claim 5, is characterized in that, described threaded fastener is nut, and described gaskets limit is between described nut and described object.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB201212889A GB201212889D0 (en) | 2012-07-20 | 2012-07-20 | An improved washer for a threaded fastener |
| GB1212889.8 | 2012-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717600U true CN203717600U (en) | 2014-07-16 |
Family
ID=46881677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320430044.9U Expired - Lifetime CN203717600U (en) | 2012-07-20 | 2013-07-18 | Gasket and threaded fastener assembly |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN203717600U (en) |
| DE (1) | DE102013107641A1 (en) |
| GB (2) | GB201212889D0 (en) |
| RU (1) | RU2639633C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017053376A1 (en) * | 2015-09-21 | 2017-03-30 | Lord Corporation | Post installation inspectable countersunk washer and method of use |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971498A (en) * | 1988-04-22 | 1990-11-20 | R. L. Industries | Cantilevered washer for a fastener |
| AUPM617094A0 (en) * | 1994-06-09 | 1994-07-07 | Industrial Rollformers Pty Limited | Washer and support member for supporting a load |
| DE29503403U1 (en) * | 1995-03-01 | 1995-04-13 | Waltermann Fabrik H | Arrangement for connecting a wire rope to a vertical post or the like. Support part |
| RU2144150C1 (en) * | 1999-06-24 | 2000-01-10 | Закрытое акционерное общество "Интеллект" | Laminated spring washer |
| JP3452542B2 (en) * | 2000-09-19 | 2003-09-29 | 核燃料サイクル開発機構 | Bolt tightening structure using boring washer |
| JP4674993B2 (en) * | 2001-05-22 | 2011-04-20 | 第一高周波工業株式会社 | Resin-coated flange fastening structure |
| JP4717055B2 (en) * | 2007-12-18 | 2011-07-06 | 神鋼ボルト株式会社 | Washer |
-
2012
- 2012-07-20 GB GB201212889A patent/GB201212889D0/en not_active Ceased
-
2013
- 2013-06-25 GB GB1311216.4A patent/GB2504211B/en not_active Expired - Fee Related
- 2013-07-18 CN CN201320430044.9U patent/CN203717600U/en not_active Expired - Lifetime
- 2013-07-18 DE DE201310107641 patent/DE102013107641A1/en not_active Withdrawn
- 2013-07-19 RU RU2013133859A patent/RU2639633C2/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013107641A1 (en) | 2014-01-23 |
| RU2013133859A (en) | 2015-01-27 |
| GB201212889D0 (en) | 2012-09-05 |
| GB2504211A (en) | 2014-01-22 |
| GB201311216D0 (en) | 2013-08-14 |
| GB2504211B (en) | 2015-05-27 |
| RU2639633C2 (en) | 2017-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
|
| CX01 | Expiry of patent term |