WO1996014911A1 - An overload-protected building element for a constructional building set - Google Patents
An overload-protected building element for a constructional building set Download PDFInfo
- Publication number
- WO1996014911A1 WO1996014911A1 PCT/DK1995/000451 DK9500451W WO9614911A1 WO 1996014911 A1 WO1996014911 A1 WO 1996014911A1 DK 9500451 W DK9500451 W DK 9500451W WO 9614911 A1 WO9614911 A1 WO 9614911A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screw
- bushing
- shank
- threaded section
- slots
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H33/00—Other toys
- A63H33/04—Building blocks, strips, or similar building parts
- A63H33/10—Building blocks, strips, or similar building parts to be assembled by means of additional non-adhesive elements
Definitions
- the invention concerns a toy building set of the type de ⁇ fined in the introductory portion of claim 1.
- the inven ⁇ tion moreover concerns a screw and a building element of the type defined in the introductory portion of claim 3 and in the introductory portion of claim 8, respectively.
- Toy building sets having building elements of this type are known and are marketed under the trade mark DUPLO T00L0®.
- the elements in question are made of plastics, e.g. ABS, and it is intended to protect them against de- struction caused by mechanical overloading.
- the ap ⁇ plicant has previously filed an international patent application PCT/DK95/00198 on a torque limiting coupling used in a screw or nut.
- the object of the invention is to provide a toy building set comprising an externally threaded screw and a build ⁇ ing element having an internally threaded bushing, where the parts are protected against destruction, even if a great torque is applied to the parts screwed together.
- these may advantageously be interconnected via a diagonally or ra ⁇ dially branched slot in the usually blunt threaded end of the screw.
- the bushing is expediently arranged so as to ex ⁇ tend at right angles into the building element from one of its plane sides.
- the bushing is usually attached to the plane face of the building element through a snap connection irreversible to the user.
- it will be the bushing end facing away from the plane face which is provided with slots for flexible deflection.
- both ends of the bushing may be interconnected peripherally, where it is then just the central, threaded portion of the bushing which is slotted to ensure flexible deflection.
- the invention moreover concerns a screw which has a hol ⁇ low shank of plastics with an externally threaded sec- tion.
- the screw is adapted to be received in a hole hav ⁇ ing a correspondingly threaded section on another element incorporated in the toy building set.
- This hole is usu ⁇ ally in the form of a plastics injection moulded bushing which is provided as an insert in the building element.
- the screw is formed with a slot which extends along the threaded sec ⁇ tion toward the end of the shank.
- the screw has two slots posi ⁇ tioned diametrically opposite each other.
- the screw is formed with three longitudinal slots which divide the threaded sec ⁇ tion of the shank into three segments of the same size. The resulting resilient beams ensure that the screw is released by the same force irrespective of its direction of application.
- the invention concerns a building element for a toy building set.
- the building element comprises a cylindrical plastics bushing having an internal thread to receive a shank of a screw with a correspondingly threaded section.
- the bushing is formed with at least one slot which extends along the threaded section.
- the slotted part of the bushing bends outwards, thereby releasing the screw from the bushing having a screw hole.
- the bushing will frequently be made from plastics by injection moulding and be subsequently assembled with the main body of the building element. If the slots are oriented in the same direction as the core removal of the mould, it is frequently an advantage for the bushing to be an integral part of the main body.
- the bushing of the building element frequently has sev ⁇ eral longitudinal slots which have the same axial extent and which segmentally divide the bushing into resilient portions. Generally, it is easier to dimension the bush ⁇ ing such that the intended resilient properties are achieved if several resilient beams are formed. The same applies to the screw when it is formed with slots. If the slots are arranged equidistantly around the periphery, directionally independent compression and expansion, re ⁇ spectively, of screw and bushing, respectively, can be achieved most easily.
- fig. 1 is a schematic lateral view of two building ele ⁇ ments having a screw and a bushing according to the in- vention,*
- fig. 2 is a lateral enlarged view of the slotted screw shown in fig. 1;
- fig. 3 is a longitudinal section of the screw shown in fig. 2;
- fig. 4 is a partly sectional view of an alternative em ⁇ bodiment of a screw according to the invention and build- ing element in a connected position;
- fig. 5 is a section of the connection shown in fig. 4 along the line V-V;
- fig. 6 is a sectional view of a preferred embodiment of a bushing in a building element according to the invention, said bushing being shown in a connection corresponding to fig. 5;
- fig. 7 is a sectional view of an alternative embodiment of a bushing in a building element according to the in ⁇ vention, said bushing being shown in a connection corre ⁇ sponding to fig. 5;
- fig. 8 is a sectional view of a further embodiment of a bushing according to the invention with axially termi ⁇ nated slots.
- Fig. 1 shows two building elements 10 and 11 which are marketed under the trade mark DUPLO TOOLO®.
- the building element 10 has a rotatably mounted insert in the form of a screw 12 of plastics.
- the screw 12 is slidably mounted so that it can perform an axial movement between two stops. Screwing-in of the screw with a tool adapted for the purpose, which is included in the building set, strengthens the coupling that is achieved when connecting the building elements by means of their coupling studs on the upper side and the complementary coupling means or recesses on the underside.
- the screw 12 itself is shown alone in figs. 2 and 3, i.e. it has been taken out of the building element 10 shown in fig. 1.
- the screw 12 is made as a hollow member of plas- tics and has a body part 13 with two rounded projections 18 and 19, which serve as stops in the above-mentioned axial displacement of the screw.
- a shank part 14 is inte ⁇ grated with the body part 13, and it has an external thread 16.
- the screw is unique by having an axially extending slot 17.
- the shown embodiment actually involves two slots 17 which extend in the axial direction of the screw and meet in the blunt bottom end 20 of the screw member. It is impor- tant to the invention that the slot radially extends along the entire part of the thread which engages a cor ⁇ respondingly threaded section on a bushing or a threaded hole.
- the body part 13 is formed with a cavity 15 which is open at the end of the screw and which is adapted to receive and retain the tip of the above-mentioned tool, so that the screw follows the rotation of the tool.
- Fig. 4 shows the shank of the screw of figs. 2 and 3 screwed into a bushing 20 in the upper side of the build ⁇ ing element 11 shown in fig. 1.
- the bushing 20 has an in ⁇ ternal thread 21 which cooperates with the thread 16 of the shank.
- the invention has been found to be particu ⁇ larly expedient when the cooperating threaded sections have a relatively great pitch and few turns.
- the screw has a little more than one turn, while the bushing has a little less than one turn.
- the actual thread turn of the screw just has to pass a corresponding thread turn on the bushing when the beams formed by the slotting of the shank 13 bend or flex inwards.
- the thread turns may advantageously be rounded in cross-section since, other ⁇ wise, visible wear may occur on the thread if separation is effected repeatedly.
- the invention will work well even if the thread turns have a triangular cross- section, and even if several turns are present, provided that the threaded section is mounted with the necessary resiliency.
- Fig. 5 shows an alternative embodiment of a screw accord ⁇ ing to the invention, said figure showing a cross-section corresponding to a section taken along the line V-V in fig. 4.
- the screw differs from this in that its shank 13 has three slots 17 equidistantly spaced peripherally. Three substantially uniform beams are formed hereby, said threaded section 16 being provided on said beams.
- the bushing 11 having the internally threaded section 21 cor ⁇ responds to the bushing shown in fig. 4.
- Fig. 6 is a cross-sectional view of a further embodiment of the invention, where it is the bushing 11 which is formed with two longitudinal slots 24 ensuring that the parts of the bushing 11 on which the threaded section 21 is provided can bend or flex outwards, thereby enabling the screw to be released in the same manner as explained in connection with fig. 4.
- fig. 7 shows a connection where it is the bushing which is provided with slots 24, there being three equidistantly arranged slots 24 in this embodiment.
- fig. 8 which shows the bushing 11 in longitudinal section, that the slots 24 do not neces ⁇ sarily extend right through the bushing, but may be ter ⁇ minated in bridges 25, which nevertheless provide the necessary flexibility.
- the torque required to disengage the threaded sections is determined i.a. by the overlap of the threads, i.e. the displacement required for the thread turns to pass each other, and by the number of thread turns.
- the easy with which the displacements can take place depends on the resilient properties of the beams formed in the shank or the bushing. These properties depend i.e.
- Both screws and bushings are preferably made of a plastics material such as ABS, HI-POM or a material hav ⁇ ing similar properties.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU38674/95A AU689337B2 (en) | 1994-11-14 | 1995-11-14 | An overload-protected building element for a constructional building set |
JP51565296A JP3679125B2 (en) | 1994-11-14 | 1995-11-14 | Overload protection assembly element for structure assembly set |
CA002203509A CA2203509C (en) | 1994-11-14 | 1995-11-14 | An overload-protected building element for a constructional building set |
EP95937793A EP0792181B1 (en) | 1994-11-14 | 1995-11-14 | An overload-protected building element for a constructional building set |
DE69503067T DE69503067T2 (en) | 1994-11-14 | 1995-11-14 | A BUILDING BLOCK ELEMENT PROTECTED FROM OVERLOAD FOR A CONSTRUCTION KIT |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK129994A DK171783B1 (en) | 1994-11-14 | 1994-11-14 | Overload-proof building element for structural building kits |
DK1299/94 | 1994-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996014911A1 true WO1996014911A1 (en) | 1996-05-23 |
Family
ID=8103306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1995/000451 WO1996014911A1 (en) | 1994-11-14 | 1995-11-14 | An overload-protected building element for a constructional building set |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0792181B1 (en) |
JP (1) | JP3679125B2 (en) |
CN (1) | CN1112951C (en) |
AU (1) | AU689337B2 (en) |
CA (1) | CA2203509C (en) |
DE (1) | DE69503067T2 (en) |
DK (1) | DK171783B1 (en) |
WO (1) | WO1996014911A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2498888A1 (en) * | 2009-11-12 | 2012-09-19 | Lego A/S | A toy building set with an overload-safe linear actuator |
US10314371B2 (en) | 2014-01-15 | 2019-06-11 | Bayerische Motoren Werke Aktiengesellschaft | Clamping element and component connection having a clamping element |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009014348U1 (en) * | 2009-10-23 | 2011-03-03 | Bruder Spielwaren Gmbh + Co. Kg | Toy assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3305518A1 (en) * | 1982-02-12 | 1983-08-25 | Robert L. 06880 Westport Conn. Brass | DEVICE FOR CONNECTING PARTS |
WO1993008886A1 (en) * | 1991-11-06 | 1993-05-13 | Lego A/S | A toy building set______________________________________________ |
US5322466A (en) * | 1989-02-24 | 1994-06-21 | Interlego A.G. | Detachable connecting device for toy-construction elements |
-
1994
- 1994-11-14 DK DK129994A patent/DK171783B1/en active
-
1995
- 1995-11-14 CN CN 95196220 patent/CN1112951C/en not_active Expired - Lifetime
- 1995-11-14 AU AU38674/95A patent/AU689337B2/en not_active Expired
- 1995-11-14 WO PCT/DK1995/000451 patent/WO1996014911A1/en active IP Right Grant
- 1995-11-14 DE DE69503067T patent/DE69503067T2/en not_active Expired - Lifetime
- 1995-11-14 CA CA002203509A patent/CA2203509C/en not_active Expired - Lifetime
- 1995-11-14 JP JP51565296A patent/JP3679125B2/en not_active Expired - Lifetime
- 1995-11-14 EP EP95937793A patent/EP0792181B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3305518A1 (en) * | 1982-02-12 | 1983-08-25 | Robert L. 06880 Westport Conn. Brass | DEVICE FOR CONNECTING PARTS |
US5322466A (en) * | 1989-02-24 | 1994-06-21 | Interlego A.G. | Detachable connecting device for toy-construction elements |
WO1993008886A1 (en) * | 1991-11-06 | 1993-05-13 | Lego A/S | A toy building set______________________________________________ |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2498888A1 (en) * | 2009-11-12 | 2012-09-19 | Lego A/S | A toy building set with an overload-safe linear actuator |
EP2498888A4 (en) * | 2009-11-12 | 2013-05-15 | Lego As | A toy building set with an overload-safe linear actuator |
US10881975B2 (en) | 2009-11-12 | 2021-01-05 | Lego A/S | Toy building set with an overload-safe linear actuator |
US10314371B2 (en) | 2014-01-15 | 2019-06-11 | Bayerische Motoren Werke Aktiengesellschaft | Clamping element and component connection having a clamping element |
Also Published As
Publication number | Publication date |
---|---|
DE69503067T2 (en) | 1999-01-21 |
JPH10510171A (en) | 1998-10-06 |
JP3679125B2 (en) | 2005-08-03 |
CA2203509A1 (en) | 1996-05-23 |
DK129994A (en) | 1996-05-15 |
EP0792181A1 (en) | 1997-09-03 |
EP0792181B1 (en) | 1998-06-17 |
CN1163580A (en) | 1997-10-29 |
CN1112951C (en) | 2003-07-02 |
AU689337B2 (en) | 1998-03-26 |
AU3867495A (en) | 1996-06-06 |
DK171783B1 (en) | 1997-05-26 |
CA2203509C (en) | 2006-07-04 |
DE69503067D1 (en) | 1998-07-23 |
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