WO2000060246A1 - Schutzkappe - Google Patents
Schutzkappe Download PDFInfo
- Publication number
- WO2000060246A1 WO2000060246A1 PCT/DE2000/000880 DE0000880W WO0060246A1 WO 2000060246 A1 WO2000060246 A1 WO 2000060246A1 DE 0000880 W DE0000880 W DE 0000880W WO 0060246 A1 WO0060246 A1 WO 0060246A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protective cap
- screw head
- cap according
- screw
- head
- 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.)
- Ceased
Links
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
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt caps
Definitions
- the invention relates to a protective cap for the head of a screw screwed into a structural part.
- Protective caps for screw heads are known in numerous embodiments. They are mostly designed as plastic injection molded parts, which due to their inherent deformability can sit on the screw head and protect it against dirt, corrosion and mechanical damage. A disadvantage of the known protective caps is that they do not have a tight fit in the long run, but are easily loosened by aging of the cap material, in particular under the influence of vibrations or other mechanical influences.
- the present invention has for its object to provide a protective cap for the head of a screw, which is held on the screw head by a firm clamp fit.
- a protective cap is to be created which maintains its secure fit even at elevated temperatures. Further advantages of the protective cap according to the invention result from the following description.
- a body is arranged between the protective cap and the screw head and produces a non-positive or positive connection between the two.
- the body generally has sufficient elasticity to hold the cap on the screw head.
- the shape of the screw head and the protective cap can be different, so that the body producing the connection must be adapted accordingly.
- the screw head can in particular be cylindrical or be hexagonal prismatic.
- the connection is generally such that the protective cap can be put on and removed again by hand, but cannot come loose on its own under the operating conditions.
- the body is arranged as a ring or cap made of an elastic material between the side face of the screw head and the inside of the jacket of the protective cap.
- the ring or cap can be made of rubber or an elastomeric plastic.
- This body can be permanently attached to the protective cap during its manufacture, so that it does not have to be applied separately to the screw head.
- the elastic ring is clamped when the protective cap is put on, thereby providing a secure connection between the cap and the screw head. If the body is thermally resilient, e.g. up to 220 ° C, the protective cap is held securely even at elevated continuous temperatures.
- the protective cap for a screw head in a flat countersink
- the protective cap is dimensioned for a flush and essentially gap-free closure of the countersink.
- the outer diameter of the protective cap corresponds to the inner diameter of the flat countersink
- the height of the protective cap corresponds to the depth of the flat countersink.
- the protective cap not only protects the screw head, but also completely fills the countersink, creating an attractive or barely visible appearance of the screw connections.
- the body is a cage with corrugated spring steel webs which are resiliently engaged with the inside of the protective cap casing and / or the side surface of the screw head.
- This embodiment offers the same advantages as the previously described embodiment with a ring made of elastic material, but beyond high temperature resistance well above 200 ° C, so that metal protective caps for screw heads can be used on an engine block and on exhaust pipes.
- the spring steel webs are corrugated in such a way that they are clamped in the annular space between the screw head and the protective cap, and so the same clamping effect is created as by a ring made of elastic material.
- the cage can have four spring steel webs, of which two webs opposite one another can be corrugated outwards and two webs opposite one another can be corrugated.
- Each spring steel web can also have a corrugation on the outside and a corrugation on the inside, so that each web is clamped between the protective cap and the screw head.
- the body is an annular disk with a plurality of spring webs which is received between the screw head and the structural part, and a latching connection is formed between the spring webs and the protective cap.
- This embodiment is particularly vibration-proof and also thermally highly resilient due to the form-fitting part of the connection. The high level of safety is also guaranteed by installing the washer under the screw head.
- this type of connection requires the assembly of the connector body already during screwing.
- the spring webs arranged on the outer edge of the ring disk preferably have projections projecting outwards in their free end regions and at least one recess is formed in the protective cap for the resilient reception of the projections.
- This embodiment also has at least two, preferably four spring bars.
- the arrangement of the projections and the recess is generally such that the locking takes place when the protective cap completely overlaps the screw head, ie the protective cap edge sits on the structural part.
- the projections can bulge-like bends of the web be ends, and the recess in the cap is preferably an annular groove, so that the locking connection can be made in any rotational position of the cap to the screw head.
- FIG. 1 shows a screw in a structural part with a first embodiment of the protective cap according to the invention
- Figure 2 shows an embodiment of the protective cap as in Figure 1, but for a screw head in a flat recess;
- Figure 3 shows a second embodiment of the protective cap with a connecting body designed as a cage
- Figure 4 shows a third embodiment of the protective cap according to the invention with a spring steel cage locked with it;
- Figure 5 shows a first partial view of Figure 4 on an enlarged scale
- FIG. 6 shows a second partial illustration of FIG. 4 on an enlarged scale
- FIG. 7 shows an axial section of the protective cap from FIG. 4;
- Figure 8 is a side view of the cage used in Figure 4.
- Figure 9 is a top view of the cage shown in Figure 8.
- Figure 1 shows a screw, the shaft 5 is screwed into a structural part 4.
- a cap is placed on the screw head 3, an elastic ring body 2 being arranged between its jacket and the side surface of the screw head 3, which is pressed between the parts 1 and 3 and thus holds the protective cap on the screw head.
- the embodiment of Figure 2 differs from that of Figure 1 only in that the screw head 3 is in a flat recess 6 and the protective cap 1 is dimensioned such that it is flush with the flat outside of the structural part 4 after placement on the screw head 3 completes.
- the elastic ring 2 is replaced by a cage 7, which is arranged between the cap 1 and the screw head 3 and has two spring webs 7 that lie opposite one another and bulge outwards and two spring webs 7 that bulge in opposite directions having.
- the a b spring bars 7 and 7 are between the head 3 and the jacket of the
- the cage 7 is provided with a flat ring 7 which is clamped between the screw head 3 and the outside of the structural part 4.
- c d axially parallel webs 7 are attached to the flat ring 7, which have at their free ends a bulge 7 projecting outwards.
- the protective cap 1 has at the closed end of its interior an annular groove 1, in which the bead-like projections 7 can engage when the
- the protective cap according to the invention is advantageous in several ways. It protects the screw head 3 against impacts, dirt or corrosion, which can occur if the surface of the screw head has a protective layer that was damaged when the screw was tightened.
- the embodiments according to FIGS. 3 to 9 with a steel cage are stable at high temperatures, so that they can also be used on hot machine parts, such as engine blocks and exhaust pipes, the protective cap 1 itself being made of heat-resistant material, such as e.g. Stainless steel can exist.
- the protective cap is reusable and can generally be removed without a tool. The risk of injury from the protruding screw head is considerably reduced.
- the protective cap of Figures 1 to 3 can be easily retrofitted even with finished screw connections.
- the protective cap is preferably made of metal.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Closures For Containers (AREA)
- Surgical Instruments (AREA)
- Light Receiving Elements (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Buffer Packaging (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/937,454 US6629810B1 (en) | 1999-04-01 | 2000-03-17 | Protecting cap |
| AT00920405T ATE255690T1 (de) | 1999-04-01 | 2000-03-17 | Schutzkappe |
| JP2000609711A JP2002541394A (ja) | 1999-04-01 | 2000-03-17 | 保護キャップ |
| DE50004649T DE50004649D1 (de) | 1999-04-01 | 2000-03-17 | Schutzkappe |
| EP00920405A EP1165975B1 (de) | 1999-04-01 | 2000-03-17 | Schutzkappe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29906012U DE29906012U1 (de) | 1999-04-01 | 1999-04-01 | Schutzkappe |
| DE29906012.8 | 1999-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000060246A1 true WO2000060246A1 (de) | 2000-10-12 |
Family
ID=8071752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2000/000880 Ceased WO2000060246A1 (de) | 1999-04-01 | 2000-03-17 | Schutzkappe |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6629810B1 (de) |
| EP (1) | EP1165975B1 (de) |
| JP (1) | JP2002541394A (de) |
| AT (1) | ATE255690T1 (de) |
| DE (2) | DE29906012U1 (de) |
| WO (1) | WO2000060246A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003048592A1 (en) * | 2001-12-01 | 2003-06-12 | Matrice Material Systems Limited | Fixing cover |
| CN102840215A (zh) * | 2012-09-20 | 2012-12-26 | 浙江龙驰防腐技术有限公司 | 一种新型螺栓螺母防护结构 |
| US20230156967A1 (en) * | 2020-05-21 | 2023-05-18 | Autonetworks Technologies, Ltd. | Circuit assembly |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29906012U1 (de) * | 1999-04-01 | 1999-07-08 | Heintges, Sebastian, 56567 Neuwied | Schutzkappe |
| US7025381B2 (en) * | 2001-03-15 | 2006-04-11 | Lockhart William E | Report folder |
| US8366367B2 (en) * | 2008-12-30 | 2013-02-05 | Brian Matlock | Nut and bolt cover |
| DE102014113034A1 (de) | 2014-09-10 | 2016-03-10 | Eberhard Kunze | Abdeckkappe für Zylinderkopfschrauben |
| DE102016002539A1 (de) | 2016-03-02 | 2016-09-29 | Daimler Ag | Kappe für eine Schraube |
| US9879711B2 (en) | 2016-06-16 | 2018-01-30 | Honda Motor Co., Ltd. | Wheel bolt cap |
| RU2640985C1 (ru) * | 2016-09-05 | 2018-01-12 | Публичное акционерное общество Научно-производственное объединение "Искра" | Соединение деталей с односторонним доступом |
| TWM549830U (zh) * | 2017-07-04 | 2017-10-01 | Xi-Gang Xu | 具裝飾及防蝕效用之加長型車用螺帽 |
| CN107366675A (zh) * | 2017-07-26 | 2017-11-21 | 李秀彦 | 一种螺栓防护装置 |
| USD907475S1 (en) | 2019-02-28 | 2021-01-12 | Robert Williams | Bolt head protector |
| USD1071718S1 (en) * | 2023-11-14 | 2025-04-22 | Key-Link Fencing & Railing, Inc. | Flange nut cap |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1137098B (de) * | 1960-04-22 | 1962-09-27 | Jung Albrecht Fa | Verkleidungsplatte fuer Abdeckungen elektrischer Installationsgeraete |
| FR2086693A5 (de) * | 1970-04-06 | 1971-12-31 | Derely Jean | |
| DE2836056A1 (de) * | 1978-08-17 | 1980-02-28 | Willy Herold | Druckvermittelndes element fuer moebelbeschlaege |
| US4784555A (en) * | 1985-09-09 | 1988-11-15 | Cantrell Roger M | Protective and ornamental cover for nuts and bolts |
| US5707113A (en) * | 1995-03-08 | 1998-01-13 | Aluminum Company Of America | Wheel cover assembly for a vehicle wheel |
| DE29906012U1 (de) * | 1999-04-01 | 1999-07-08 | Heintges, Sebastian, 56567 Neuwied | Schutzkappe |
| US5988966A (en) * | 1998-08-14 | 1999-11-23 | Chen; Antony | Antitheft device for use with a bolt |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US972140A (en) * | 1904-06-21 | 1910-10-04 | Electric Storage Battery Co | Means for protecting bolts, nuts, &c. |
| US1328488A (en) * | 1919-03-22 | 1920-01-20 | Junius A Bowden | Dust-cap and attaching means therefor |
| US3298272A (en) * | 1964-10-20 | 1967-01-17 | Harold P Henderson | Protective and decorative cap for screw and bolt heads |
| DE2654727C2 (de) * | 1976-12-02 | 1986-07-03 | Hilti Ag, Schaan | Dübel mit Spreizhülse und Spreizkörper |
| US4890967A (en) * | 1987-10-06 | 1990-01-02 | Spectre Industries, Inc. | Bolt cap device |
| US4826380A (en) * | 1988-01-19 | 1989-05-02 | Ltv Aerospace & Defense Company | Pre-cast sealant dome and method |
| CA1315712C (en) * | 1989-05-11 | 1993-04-06 | Robert A. Nason | Protective lubricating cap |
| US5082409A (en) * | 1990-10-26 | 1992-01-21 | Aluminum Company Of America | Vehicular lug nut cover and clip |
-
1999
- 1999-04-01 DE DE29906012U patent/DE29906012U1/de not_active Expired - Lifetime
-
2000
- 2000-03-17 EP EP00920405A patent/EP1165975B1/de not_active Expired - Lifetime
- 2000-03-17 DE DE50004649T patent/DE50004649D1/de not_active Expired - Lifetime
- 2000-03-17 WO PCT/DE2000/000880 patent/WO2000060246A1/de not_active Ceased
- 2000-03-17 JP JP2000609711A patent/JP2002541394A/ja active Pending
- 2000-03-17 AT AT00920405T patent/ATE255690T1/de not_active IP Right Cessation
- 2000-03-17 US US09/937,454 patent/US6629810B1/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1137098B (de) * | 1960-04-22 | 1962-09-27 | Jung Albrecht Fa | Verkleidungsplatte fuer Abdeckungen elektrischer Installationsgeraete |
| FR2086693A5 (de) * | 1970-04-06 | 1971-12-31 | Derely Jean | |
| DE2836056A1 (de) * | 1978-08-17 | 1980-02-28 | Willy Herold | Druckvermittelndes element fuer moebelbeschlaege |
| US4784555A (en) * | 1985-09-09 | 1988-11-15 | Cantrell Roger M | Protective and ornamental cover for nuts and bolts |
| US5707113A (en) * | 1995-03-08 | 1998-01-13 | Aluminum Company Of America | Wheel cover assembly for a vehicle wheel |
| US5988966A (en) * | 1998-08-14 | 1999-11-23 | Chen; Antony | Antitheft device for use with a bolt |
| DE29906012U1 (de) * | 1999-04-01 | 1999-07-08 | Heintges, Sebastian, 56567 Neuwied | Schutzkappe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003048592A1 (en) * | 2001-12-01 | 2003-06-12 | Matrice Material Systems Limited | Fixing cover |
| US7384225B2 (en) | 2001-12-01 | 2008-06-10 | Matrice Material Systems Limited | Fixing cover |
| CN102840215A (zh) * | 2012-09-20 | 2012-12-26 | 浙江龙驰防腐技术有限公司 | 一种新型螺栓螺母防护结构 |
| US20230156967A1 (en) * | 2020-05-21 | 2023-05-18 | Autonetworks Technologies, Ltd. | Circuit assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| DE29906012U1 (de) | 1999-07-08 |
| DE50004649D1 (de) | 2004-01-15 |
| ATE255690T1 (de) | 2003-12-15 |
| EP1165975A1 (de) | 2002-01-02 |
| EP1165975B1 (de) | 2003-12-03 |
| US6629810B1 (en) | 2003-10-07 |
| JP2002541394A (ja) | 2002-12-03 |
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