DK171773B1 - Holder for holding a rod inwards - Google Patents
Holder for holding a rod inwards Download PDFInfo
- Publication number
- DK171773B1 DK171773B1 DK67195A DK67195A DK171773B1 DK 171773 B1 DK171773 B1 DK 171773B1 DK 67195 A DK67195 A DK 67195A DK 67195 A DK67195 A DK 67195A DK 171773 B1 DK171773 B1 DK 171773B1
- Authority
- DK
- Denmark
- Prior art keywords
- housing
- end portion
- channel
- blank
- workpiece
- Prior art date
Links
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 241001166076 Diapheromera femorata Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process 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
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
- F16B7/14—Telescoping systems locking in intermediate non-discrete positions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
- B43K23/016—Holders for crayons or chalks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Description
i DK 171773 B1in DK 171773 B1
Den foreliggende opfindelse angår en fastholdelsesindretning til fastspænding af et langstrakt emne mod bevægelser i dets længderetning, hvilken indretning omfatter: et langstrakt hus med et første endeparti og et andet ende-5 parti, en indvendig langstrakt kanal til at optage det langstrakte emne, hvilken kanal er defineret af en væg af huset, strækker sig mellem det første endeparti og det andet endeparti og udmunder ved det første endeparti, og et elastisk og ringformet fastspændingselement.The present invention relates to a retaining device for clamping an elongate blank against longitudinal movements thereof, comprising: an elongate housing having a first end portion and a second end portion, an inner elongated channel for receiving the elongated blank, said channel is defined by a wall of the housing, extending between the first end portion and the second end portion and opening at the first end portion, and an elastic and annular clamping member.
1010
Fastholdelsesindretninger af denne art kendes fra eksempelvis US patent nr. 2 657 671, US patent nr. 3 871 780 samt GB patent nr. 2 078 508. Ved navnlig de to sidstnævnte fastholdelsesindretninger benyttes ringformede 15 fastspændingselementer, der fastspænder et udragende langstrakt emne nøje centreret inde i en kanal i et cylindrisk hus eller rør, der kan være en del af enten et bordben eller en spadserestok, mod bevægelser i emnets længderetning, idet fastspændingselementet klemmer om-20 kring hele emnets periferi og i sig selv kan glide eller rulle langs en indvendig konisk flade i det cylindriske hus. Fælles for disse kendte indretninger er, at de fastholder emnet med en mindste fastspændingskraft, når emnet søges bevæget i en udadgående retning, og med en fast-25 spændingskraft, der tiltager jo længere ind i det omgivende hus emnet søges bevæget. Derved kan emnet trækkes ud fra huset uden videre ved overvindelse af den nævnte mindste fastspændingskraft, mens en indadrettet bevægelse er forhindret.Retaining devices of this kind are known from, for example, U.S. Patent No. 2,657,671, U.S. Patent No. 3,871,780 and GB Patent No. 2,078,508. In particular, the latter two retaining devices employ annular 15 clamping members which tightly project an elongated elongate member inside a channel in a cylindrical housing or tube, which may be part of either a table leg or a walking stick, against longitudinal movement of the workpiece, the clamping element clamping around the entire workpiece periphery and itself sliding or rolling along a inner conical surface of the cylindrical housing. Common to these known devices is that they hold the workpiece with a minimum clamping force when the workpiece is sought to move in an outward direction, and with a fastening tension which increases the longer the workpiece is moved into the surrounding housing. Thereby, the workpiece can be pulled out from the housing without further being overcome by the said minimum clamping force, while inward movement is prevented.
30 Når det langstrakte emne påvirkes med en siderettet kraft ved den ende, der rager ud fra huset er det imidlertid en væsentlig ulempe ved disse kendte fastholdelsesindretninger, at emnet vil have en tendens til at rokke frem og 35 tilbage svarende til diameterforskellen mellem emnet og DK 171773 B1 2 indersiden af det omgivende rør. Dette problem vokser ved en tiltagende diameterforskel og har således navnlig betydning, når emnet fremstilles med en diametertolerance, eller når der skal benyttes emner med forskellige diame-5 tre inden for små intervaller.However, when the elongated blank is actuated by a lateral force at the end projecting from the housing, a major disadvantage of these known retaining devices is that the blank will tend to project back and forth corresponding to the diameter difference between the blank and DK. 171773 B1 2 inside of the surrounding tube. This problem grows with increasing diameter difference and thus is of particular importance when the workpiece is manufactured with a diameter tolerance or when workpieces with different diameters are to be used within small intervals.
Opfindelsen har til formål at afhjælpe den ovenfor beskrevne ulempe.The invention has for its object to alleviate the disadvantage described above.
10 Opfindelsen har endvidere til formål at give brugeren af fastholdelsesindretningen mulighed for uden videre og fra husets yderside at kunne udløse det ringformede fastspændingselement og derved at kunne bevæge det langstrakte emne frit i begge retninger. Ved samtlige de ovenfor be-15 skrevne indretninger er det således nødvendigt at føre det langstrakte emne helt eller delvist ud af det omgivende hus eller rør for efterfølgende at kunne anbringe emnet i en stilling, hvor emnet rager mindre ud fra det nævnte endeparti.The invention further aims to enable the user of the restraint device to be able to release the annular clamping element without exceeding and from the outside of the housing, thereby being able to move the elongated workpiece freely in both directions. Thus, in all of the above-described devices, it is necessary to extend the elongated blank completely or partially out of the surrounding housing or tube to subsequently place the blank in a position where the blank protrudes less from the said end portion.
2020
De ovenfor angivne formål opnås ifølge opfindelsen ved hjælp af en fastholdelsesindretning af den indledningsvis anførte art, der er ejendommelig ved at huset omfatter en spalte, der udmunder ved husets ydre og i kanalen og 25 strækker sig skråt fra husets ydre i retning fra eller mod det første endeparti, og at det ringformede fastspændingselement forløber dels i spalten i anlæg mod det langstrakte emne optaget i kanalen og dels langs husets ydre. Ved at udforme fastholdelsesindretningen på denne 30 måde vil det langstrakte emne blive påvirket med en mindste fastspændingskraft og en tiltagende fastspændingskraft ved bevægelse af fastspændingselementet langs den skrå spalte, så at det langstrakte emne fastspændes mellem væggen af huset og det ringformede fastspændingsele-35 ment.The above-mentioned objects are achieved according to the invention by means of a restraint device of the type mentioned initially, characterized in that the housing comprises a slot which opens at the outer and in the duct and extends obliquely from the exterior of the housing towards or towards the housing. first end portion, and that the annular clamping member extends partly in the slot in abutment against the elongate member accommodated in the duct and partly along the exterior of the housing. By designing the retaining device in this way, the elongated blank will be actuated by a minimum clamping force and an increasing clamping force upon movement of the clamping member along the inclined gap so that the elongated blank is clamped between the wall of the housing and the annular clamping member.
DK 171773 B1 3DK 171773 B1 3
Ved at emnet holdes fastspændt mellem fastspændingselementet og husets væg undgås den ovenfor nævnte tendens for emnet til at rokke, idet emnet således er støttet af kanalen ved såvel det første endeparti som ved fastspæn-5 dingselementet. Selve fastspændingen tilvejebringes ved en kilevirkning, der forstærkes når fastspændingselementet bevæger sig eller ruller mod kanalen i den skrå spalte, når emnet bevæges i en første retning i overensstemmelse med spaltens orientering. Såfremt emnet søges bevæ-10 get i en retning modsat den første retning uden udløsning af fastspændingselementet, vil fastspændingselementet påvirke emnet med en mindste fastspændingskraft, hvilket sikrer at emnet ikke kan falde ud af sig selv. Når fastspændingselementet skal udløses for fri bevægelse af em-15 net gribes blot omkring den del af ringen, der strækker sig langs husets ydre og ringen kan uden videre forskydes opad langs den skrå spalte bort fra spaltens munding i kanalen, hvorved fastspændingen kan ophæves helt eller delvist.By keeping the workpiece clamped between the clamping element and the housing wall, the above-mentioned tendency for the workpiece to be rocked is avoided, the workpiece being thus supported by the duct at both the first end portion and the clamping element. The clamping itself is provided by a wedge action which is reinforced as the clamping element moves or rolls against the channel in the inclined slit as the workpiece moves in a first direction according to the orientation of the slit. If the workpiece is sought to move in a direction opposite to the first direction without release of the clamping member, the clamping member will actuate the workpiece with a minimum clamping force, ensuring that the workpiece cannot fall out by itself. When the clamping element is to be released for free movement of the article, only the portion of the ring extending along the exterior of the housing is gripped and the ring can be displaced upwards along the inclined gap away from the mouth of the gap in the channel, whereby the clamping can be completely removed or partly.
2020
Fastholdelsesindretningen ifølge opfindelsen vil med særlig fordel kunne anvendes som et skriveredskab til fastspænding af skrivekridt til anvendelse i f.eks. skoler. Navnlig skrivekridt fremstilles i praksis med visse tole-25 rancer, hvilket gør opfindelsen særlig hensigtsmæssig til denne type emner. Opfindelsen vil ligeledes med fordel kunne anvendes til andre emner, der i en position, hvor de er ført delvist ud af det omgivende hus, påvirkes af siderettede kræfter. Her tænkes eksempelvis på lampestæn-30 ger, hvor huset kan udgøre en del af et vægbeslag.The restraint device of the invention can be used with particular advantage as a writing tool for clamping writing steps for use in e.g. schools. In particular, writing chalk is made in practice with certain tolerances, which makes the invention particularly suitable for this type of subject. The invention can also advantageously be applied to other objects which, in a position where they are partially moved out of the surrounding housing, are influenced by lateral forces. Here, for example, think of lamp posts where the housing can form part of a wall bracket.
Ifølge en foretrukket udførelsesform for opfindelsen strækker spalten sig skråt fra husets ydre i retning fra det første endeparti. Fastspændingselementet kan i dette 35 4-ilfælde endvidere være arrangeret i nærheden af det før- DK 171773 B1 4 ste endeparti, via hvilket emnet skal kunne udtrækkes eller indføres, hvorved der tilvejebringes en særlig sikker fastholdelse af emnet i nærheden af den ende, hvor emnet kan være udsat for siderettede kraftpåvirkninger. Endvi-5 dere kan kanalen også være udformet med en munding ved det andet endeparti, idet denne munding kan benyttes til indføring af emnet i huset uden at fastspændingselementet skal fjernes eller udløses helt. Emnet vil under indføringen i dette tilfælde blot presse fastspændingselemen-10 tet langs spalten i retning mod husets ydre, hvorved det elastiske fastspændingselement viger bort, så emnet kan passere.According to a preferred embodiment of the invention, the slot extends obliquely from the exterior of the housing in the direction from the first end portion. In this case, the clamping element can also be arranged in the vicinity of the first end portion, through which the workpiece must be able to be pulled out or inserted, thereby providing a particularly secure retention of the workpiece near the end where the workpiece may be subject to side effects. Further, the duct may also be formed with an orifice at the other end portion, this orifice being used to insert the workpiece into the housing without the clamping element having to be removed or fully released. During insertion, in this case, the blank will merely push the clamping member along the gap towards the exterior of the housing, thereby displacing the elastic clamping member so that the blank can pass.
Ifølge yderligere foretrukne udførelsesformer kan huset 15 og/eller kanalen have et tværsnit, der er afpasset efter emnets tværsnitsform.According to further preferred embodiments, the housing 15 and / or the channel may have a cross-section adapted to the cross-sectional shape of the workpiece.
Opfindelsen vil i det følgende blive nærmere forklaret under henvisning til den vedføjede tegning, der viser et 20 langsgående centralt snit gennem en udførelsesform for indretningen ifølge opfindelsen.The invention will be explained in more detail below with reference to the accompanying drawing, which shows a longitudinal central section through an embodiment of the device according to the invention.
Som det fremgår omfatter en fastholdelsesindretning 1 ifølge opfindelsen et langstrakt hus 2. Huset 2 har en 25 væg 5, der definerer en indvendig kanal 25 med et cirkulært eller firkantet tværsnit, som udmunder ved et første endeparti 10 af huset 2 og ved et andet endeparti 20. Kanalen 25 har et i det væsentlige konstant tværsnit i længderetningen. Derudover er der i væggen 5 i nærheden 30 af det første endeparti 10 dannet en skrå spalte 40, der udmunder ved henholdsvis husets ydre og i kanalen 25. Som det derudover fremgår, forløber spalten 40 skråt fra husets 2 ydre i retning fra det første endeparti 10 og mod det andet endeparti 20. Den skrå spalte 40 strækker sig i 35 væggen 5 langs husets 2 omkreds. Udstrækningen af spalten DK 171773 B1 5 40 har et sådant omfang, at der kan tilvejebringes en fastspænding af et langstrakt emne 30, såsom en lampestang eller et skrivekridt, som er indført i kanalen med en ende ragende frem fra huset 2 ved det første endeparti 5 10, således som det vil blive forklaret nærmere nedenfor.As can be seen, a retaining device 1 according to the invention comprises an elongate housing 2. The housing 2 has a 25 wall 5 defining an inner channel 25 with a circular or square cross-section, which opens at a first end portion 10 of the housing 2 and at a second end portion. 20. The channel 25 has a substantially constant longitudinal cross section. In addition, in the wall 5 in the vicinity 30 of the first end portion 10, an oblique slot 40 is formed, which opens at the exterior of the housing and in the channel 25. As can be seen further, the column 40 extends obliquely from the exterior of the housing 2 towards the first end portion. 10 and towards the other end portion 20. The oblique slot 40 extends in the wall 5 along the perimeter of the housing 2. The extension of the slot DK 171773 B1 5 40 is such that a clamping of an elongate blank 30 such as a lamp bar or writing chalk can be provided inserted into the channel with an end projecting from the housing 2 at the first end portion 5 10, as will be explained in more detail below.
Fastholdelsesindretningen 1 omfatter derudover et fastspændingselement i form af en elastisk eftergivelig 0-ring 35, som er ført ned over huset 2 og er delvist ind-10 lagt i spalten 40 til anlæg mod siderne af denne og det langstrakte emne 30. Som det fremgår strækker ringen 35 sig endvidere langs en del af husets 2 ydre. Det er klart, at fastholdelsesindretningen 1 skal være udformet således, at fastspændingselementet eller ringen 35 træder 15 ind i kanalen 25 ved spalten 40, når emnet er udtaget fra huset 2. Ved indføring af emnet 30 i kanalen via det andet endeparti 20 forbi ringen 35, udvides ringen uden videre for at ligge i anlæg mod emnet, hvorved der tilvejebringes en mindste fastspændingskraft.In addition, the retaining device 1 comprises a clamping element in the form of an elastic resilient 0-ring 35, which is passed down over the housing 2 and is partially inserted into the slot 40 for abutment of the sides thereof and the elongated workpiece 30. As can be seen stretches the ring 35 further along a portion of the exterior of the housing 2. It is to be understood that the retaining device 1 must be designed such that the clamping element or ring 35 enters the channel 25 at the slot 40 when the workpiece is removed from the housing 2. Upon insertion of the workpiece 30 into the channel via the second end portion 20 past the ring 35 , the ring is expanded to be in contact with the workpiece, thereby providing a minimum clamping force.
2020
Som det fremgår af tegningen presses emnet 30 som følge af fastspændingskraften til anlæg mod den del af kanalen 25, der ligger modsat spalten 40. Da kanalen 25 som nævnt har et konstant tværsnit i længderetningen, vil emnet 30 25 således ligge an mod væggen 5 i kanalen 25. Ved at emnet 30 ligger an mod kanalen 25 ved såvel det første endeparti 10 som ved fastspændingselementet 35, er emnet 30 effektivt hindret i at kunne rokke frem og tilbage i kanalen 25, når emnet påvirkes med siderettede kræfter, dvs.As can be seen from the drawing, the workpiece 30, as a result of the clamping force for abutment, is pressed against the part of the channel 25 which lies opposite the slot 40. As mentioned, the channel 25 has a constant longitudinal cross-section, so that the workpiece 30 25 abuts against the wall 5 in channel 25. By the blank 30 abutting the channel 25 at both the first end portion 10 and the clamping member 35, the blank 30 is effectively prevented from being able to rock back and forth in the channel 25 when the blank is actuated by lateral forces, i.e.
30 kræfter med en komposant vinkelret på indretningens 1 længderetning, på den udragende del.30 forces with a component perpendicular to the longitudinal direction of the device 1, on the protruding part.
Det er karakteristisk for indretningen 1 ifølge opfindelsen, at emnet 30, der med særlig fordel kan være et skri-35 vekridt, er fastholdt mod bevægelser i længderetningen DK 171773 B1 6 med en mindste fastspændingskraft der, som følge af den viste orientering af den skrå spalte 40, som forløber fra husets 2 ydre i retning fra det første endeparti 10, forhindrer emnet 30 i uden videre at blive ført ud af kana-5 len 25 ved det første endeparti 10. Som følge af den skrå spalte 40 vil det ringformede fastspændingselement 35, der ligger an mod emnet 30 og en del af husets 2 væg 5 i spalten 40, bevæge sig langs med den skrå spalte 40 mod den andet endeparti 20, når emnet 30 søges bevæget mod 10 dette endeparti 20 ved en tilsvarende rettet trykpåvirkning på emnets 30 udragende endeflade, eksempelvis når emnet er et skrivekridt, som benyttes på en tavle. Ved denne bevægelse, som følger af at fastspændingselementet 35 medføres af emnet 30, presses fastspændingselementet 15 35 yderligere ned i spalten 40 og virker derved som en kile, der påvirker emnet 30 med en tiltagende fastspæn-dingskraft, hvorved en yderligere indføring af emnet effektivt forhindres.It is characteristic of the device 1 according to the invention that the workpiece 30, which can be of particular advantage a writing step, is retained against longitudinal movements DK 171773 B1 6 with a minimum clamping force there, due to the orientation of the inclined slot 40 extending from the exterior of the housing 2 in the direction of the first end portion 10 prevents the blank 30 from being readily discharged from channel 5 at the first end portion 10. As a result of the inclined slot 40, the annular clamping member 35 abutting the blank 30 and a portion of the wall 2 of the housing 2 in the slot 40 move along the inclined slot 40 toward the other end portion 20 when the blank 30 is sought to be moved toward this end portion 20 by a correspondingly directed pressure exertion of the protruding end surface of the blank 30, for example when the blank is a writing chalk used on a blackboard. In this movement, as a result of the clamping element 35 being carried by the blank 30, the clamping element 15 35 is further pressed down into the slot 40, thereby acting as a wedge, which impacts the blank 30 with an increasing clamping force, thus preventing further insertion of the blank .
20 Selv om spalten 40 på tegningen er vist strækkende sig skråt fra husets 2 ydre mod det andet endeparti 20 er der intet til hinder for, at indretningen 1 ifølge opfindelsen kan have en skrå spalte, som strækker sig skråt fra husets 2 ydre i retning mod det første endeparti 10.20 Although the slot 40 in the drawing is shown extending obliquely from the exterior of the housing 2 towards the other end portion 20, there is nothing to prevent the device 1 according to the invention from having an inclined gap extending obliquely from the exterior of the housing 2 towards the first end portion 10.
Claims (6)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK67195A DK171773B1 (en) | 1995-06-13 | 1995-06-13 | Holder for holding a rod inwards |
| PCT/DK1996/000232 WO1996041958A1 (en) | 1995-06-13 | 1996-05-31 | A retention device for elongate objects |
| AU61213/96A AU6121396A (en) | 1995-06-13 | 1996-05-31 | A retention device for elongate objects |
| EP96918614A EP0832362A1 (en) | 1995-06-13 | 1996-05-31 | A retention device for elongate objects |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK67195 | 1995-06-13 | ||
| DK67195A DK171773B1 (en) | 1995-06-13 | 1995-06-13 | Holder for holding a rod inwards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK67195A DK67195A (en) | 1996-12-14 |
| DK171773B1 true DK171773B1 (en) | 1997-05-20 |
Family
ID=8096208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK67195A DK171773B1 (en) | 1995-06-13 | 1995-06-13 | Holder for holding a rod inwards |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0832362A1 (en) |
| AU (1) | AU6121396A (en) |
| DK (1) | DK171773B1 (en) |
| WO (1) | WO1996041958A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1123635A (en) * | 1912-11-18 | 1915-01-05 | Robert S Conner | Clamping device for tappets. |
| US1203071A (en) * | 1914-12-11 | 1916-10-31 | William F Straub | Locking device. |
| US2657671A (en) * | 1952-09-23 | 1953-11-03 | Francis A Wade | Controlled lead pencil |
| SE378350B (en) * | 1972-11-03 | 1975-09-01 | Skillingaryds Mekaniska Ab | |
| FR2390618B1 (en) * | 1977-05-12 | 1985-11-29 | Lamouric Pol | DEVICE FOR ROTATING A TOOL IN A TOOL HOLDER |
| GB2078508A (en) * | 1980-05-19 | 1982-01-13 | Carters J & A Ltd | Adjustable locking mechanism |
| FR2697874B1 (en) * | 1992-11-10 | 1995-02-24 | Fabrication Mat Orthopedique S | Device for connecting a slender element and a support for this element. |
-
1995
- 1995-06-13 DK DK67195A patent/DK171773B1/en not_active IP Right Cessation
-
1996
- 1996-05-31 EP EP96918614A patent/EP0832362A1/en not_active Ceased
- 1996-05-31 WO PCT/DK1996/000232 patent/WO1996041958A1/en not_active Application Discontinuation
- 1996-05-31 AU AU61213/96A patent/AU6121396A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DK67195A (en) | 1996-12-14 |
| EP0832362A1 (en) | 1998-04-01 |
| WO1996041958A1 (en) | 1996-12-27 |
| AU6121396A (en) | 1997-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |