CN1163580A

CN1163580A - Overload-protected building element for constructional building set

Info

Publication number: CN1163580A
Application number: CN 95196220
Authority: CN
Inventors: 尼尔斯·施密特·克里斯藤森
Original assignee: Interlego AG
Current assignee: Lego AS
Priority date: 1994-11-14
Filing date: 1995-11-14
Publication date: 1997-10-29
Anticipated expiration: 2015-11-14
Also published as: DK129994A; WO1996014911A1; CN1112951C; JPH10510171A; CA2203509C; AU3867495A; JP3679125B2; DE69503067T2; DK171783B1; EP0792181B1; AU689337B2; CA2203509A1; DE69503067D1; EP0792181A1

Abstract

A toy building set comprises a screw having a hollow body of plastics, which is externally formed with a threaded section, as well as a building element having a plastics bushing with a corresponding, internally threaded section. Either the bushing or the shank of the screw is formed with at least one slot along part of its length, said slot extending along the threaded section. The threaded sections will hereby be disengaged before being destroyed by a possible overload.

Description

The overload protection building element that the structural construction device is used

The present invention relates to a kind of toy apparatus for building of the sort of type defined in the introductory section of claim 1.The invention still further relates to the screw and the building element of the sort of type defined in the introductory section of claim 3 and claim 8 respectively.

Toy apparatus for building with this type building element is well-known, and at " DUPL0TOOLO ^" trade mark sale down.Above-mentioned member is made with plastics such as ABS resin, is intended for protecting them to exempt from the destruction that is caused by mechanical overload.Therefore, the former International Patent Application PCT/DK95/00198 that has proposed about the connection of the torque-limiting that in screw or nut, uses of applicant.

The purpose of this invention is to provide a kind of toy apparatus for building; this toy apparatus for building is made up of a kind of externally threaded screw and a kind of building element with internal thread lining; be screwed on together the parts even a very big torque is applied to herein, also can protect these parts to exempt from destruction with screw.

Realization this purpose is, is that this screw rod or lining are all made of plastic, has the cannelure described in claim 1 characteristic.

Thus, if these parts are subjected to a torque that surpasses a certain value, it guarantees that this screw rod can be compressed, or this lining can be inflated.It should be noted that if this screw is subjected to the effect of a horizontal torque in distance screw thread a distance, then these two parts will be separated from each other.Thereby if this screw has been tightened to such an extent that the surpass degree of tightening fully, then it guarantees that threaded parts can throw off mutually.So just provide a kind of torque of restriction to connect, to prevent by the caused overload of torsion.

Described in claim 2, several grooves are preferably arranged, these grooves are divided into several resilient beams with threaded parts segmented.

If screw is equipped with groove, then by one angie type or radial fork groove to be interconnected in the normally blunt nosed threaded end of this screw may be favourable to these grooves.

If these grooves are arranged in the lining of a building element, then arrange this lining suitably, extend to this building element so that meet at right angles from one of them planar side.

This lining usually by one on the irreversible plane that is affixed to this building element fast of user.Here, will be that bush end face is left this plane, the groove that is used for flexible deflection is equipped with on this plane.In addition, the two ends of this lining can interconnect on periphery, just in time are the middle threaded sections of the fluting of this lining then herein, guarantee flexible deflection.

The invention still further relates to a kind of screw, this screw has the plastics system hollow stem of a band male thread portion.In the hole on another member that comprises in the suitable toy apparatus for building of packing into of this screw, this hole has the respective threads part.This hole is generally plastic injected die lining form, and this plastic injected die lining is as an insert in this building element.Along the spiro rod length part of this screw, this screw forms a groove, and extend the end of this groove along threaded portion towards this screw rod.

If this screw is subjected to the load by the pulling force of torsion or cross force generation on its longitudinal direction, then its trough of belt screw rod will play the elasticity beam action, when this pulling force reaches certain value, these spring beam turning-ins, therefore thereby the threaded portion that cooperatively interacts is disconnected from each other, and this screw unclamps from building element and can not be subjected to permanent damage.

In a preferred embodiment, this screw has the groove of mutual opposed location on two diameters.In a specially suitable embodiment, this screw forms three cannelures, and these three cannelures partly are divided into screw flight three sections of same size.The spring beam that is generated guarantee that this screw is unclamped by identical power and with the orientation independent of applied force.

In addition, the present invention relates to a kind of building element that is used for the toy apparatus for building.This building element comprises a cylindrical plastic lining, and this plastic bushing has an internal thread, has the screw rod of respective threaded part so that pack into one.This lining forms a groove that extends along threaded portion at least.

If screw is subjected to the load of certain value, then the slot part that has of this lining bends outwards, thereby unclamps this screw from the lining with screw.This lining, and fits together in the main body with this building element subsequently by the plastics manufacturing through injection molding commonly used.If this groove is orientated on the direction identical with the core body demoulding, often be favourable then to lining as an integral part of this main body.

The lining of this building element usually has several cannelures, and these cannelures have identical axial range, and they are divided into several elastic parts with this lining segmented.In general,, this lining is processed into required size, thereby obtains the elastic performance of expection with regard to easier if form several spring beams.When screw forms several groove, the same applies to screw.If these grooves are equidistant arrangement on circumference, then can the most easily realize the compression and the expansion of screw and lining independent of direction separately.

Below in conjunction with preferred embodiment and with reference to accompanying drawing the present invention is described more fully, in the accompanying drawing:

Fig. 1 is the diagrammatic side view that has according to two building elements of a screw of the present invention and a lining;

Fig. 2 is the side-looking enlarged drawing of trough of belt screw shown in Fig. 1;

Fig. 3 is the longitudinal sectional drawing of screw shown in Fig. 2;

Fig. 4 is according to a screw of the present invention and the partial cross section figure that is in another embodiment of the building element in the link position;

Fig. 5 is along the sectional view of this connection shown in the V-V line among Fig. 4;

Fig. 6 is the sectional view of the preferred embodiment of a lining in according to building element of the present invention, and described lining is corresponding to shown in the connection of Fig. 5.

Fig. 7 is the sectional view of another embodiment of a lining in according to building element of the present invention, and described lining is corresponding to shown in the connection of Fig. 5; And

Fig. 8 is the sectional view of another embodiment of a lining that has axial finishing according to the present invention.

Fig. 1 illustrates two building elements 10 and 11, and these two building elements are at " DUPL0TOOL0 ^" trade mark sale down.Some possibility of using these members has been described in patent EP-A-0612262, from this patent, has found out that as if this building element 10 also have the rotary type of plastics screw 12 forms that insert is installed.These screw 12 slidingtypes are installed, and move axially so that it can be finished between two retainers.Screw in this screw (this screw is included in the apparatus for building) with a kind of instrument of suitable this purpose and reinforce this connection, when the connection stud with building element is connected to upside with them and when being connected to downside with complementary coupling mechanism or groove, this connection has just realized.

Screw 12 itself is separately shown in Fig. 2 and 3, that is its takes out from the building element shown in Fig. 1 10.This screw 12 is made into to resemble a hollow working of plastics, and has a main part 13, and this main part 13 has the

projection

18 and 19 of two circles, and these two circular bulges divide 18 and 19 retainers during as above-mentioned screw axial displacement to use.Screw portion 14 and main part 13 or an integral body, and it has an external screw thread 16.In a preferred embodiment of the invention, this screw is owing to having an axially extended groove 17, so be unique.

In fact embodiment shown in being somebody's turn to do comprises two grooves 17, and these two grooves 17 extend on the axial direction of screw, and joins in the blunt nosed bottom 20 of this screw piece.For purposes of the invention, importantly this groove radially extends along whole threaded portion, corresponding threaded section on lining of this screw-threaded engagement or the screw.

It will be appreciated that from Fig. 3 main part 13 forms a cavity 15, this cavity 15 is an opening at the place, end of screw, and is fit to pack into and keeps the pointed nose of above-mentioned instrument, so that this screw is along with this instrument rotates.

Fig. 4 illustrates the Fig. 2 that is screwed into the lining 20 in 11 upsides of building element shown in Fig. 1 and 3 screw rod.This lining 20 has the internal thread 21 that cooperates with this screw flight 16.The present invention finds, when the threaded portion of this cooperation has bigger pitch and seldom suitable especially during bung flange.In the specially suitable embodiment of the present invention, this screw has slightly that this lining has the screw thread that is less than a circle slightly more than a circle.Thus, when beam turning-in that forms when the fluting that utilizes bar 13 or deflection, the actual bung flange of this screw just in time must be by the corresponding bung flange on this lining.

The circular possibility of cross section that be also pointed out that this bung flange is favourable, because otherwise, if repeated isolation can produce significantly wearing and tearing on this screw thread.But even even this bung flange has a triangular cross section and has several circles, as long as threaded portion is mounted to the elasticity with necessity, the present invention will work well.

When on direction A as shown in Figure 4 when screw applies power, an overturn point 22 will appear, make this screw rod become an inwardly beam of swing, a illustrates with arrow.Thereby

bung flange

16,21 can pass through in zone 23 mutually.

Fig. 5 illustrates another embodiment according to a screw of the present invention, and this Fig. 5 illustrates a cross section of getting part corresponding to V-V line in Fig. 4.This screw thread difference is that its screw rod 13 has three equidistant grooves that separate 17 on circumference.Thereby forming three uniform basically beams, described threaded portion 16 is arranged on the described beam.Lining 11 with female thread portion 21 is equivalent to the lining shown in Fig. 4.

Fig. 6 is the sectional view of another embodiment of the present invention, this lining 11 forms two cannelures 24 herein, the parts that are provided with the lining 11 of threaded portion 21 above this two cannelures 24 guarantee can outwardly-bent or deflection, thus make screw can with throw off about the illustrated same way as of Fig. 4.

The same with Fig. 6, Fig. 7 illustrates a kind of connection, is that lining is equipped with groove 24 herein, and the groove 24 of three equidistant arrangements is arranged in the present embodiment.Fig. 8 illustrates the longitudinal cross-section of this lining 11, it will be appreciated that from Fig. 8, and this groove 24 needn't directly extend by lining, but can terminate in the bridgeware 25, but this bridgeware provides the flexible of necessity.

For the required torque of threaded portion separately is not that overlapping (promptly being used for bung flange mutually by required displacement) and bung flange number by screw thread determines.The easy degree that can carry out displacement depends on the elastic property of the beam that forms in screw rod or lining.That is these character depend on the length and the position of wall thickness, material selection, width in a circumferential direction, the groove relevant with threaded portion, and depend on that these grooves extend axially or spirality.Therefore, can stop groove to extend in a longitudinal direction, except for example stoping groove extends in a longitudinal direction with a pitch opposite with the hand of spiral without any thing.

The present invention has illustrated a kind of lining in the above; And as long as it is the screw that groove is housed, just can use it within the scope of the present invention in the solid member with hole, screw thread is equipped with in this hole, and it just in time is needed threaded perforate.

When this threaded portion had two cannelures of radially locating, in some cases, it may be favourable interrupting or cancel this bung flange in the zone of departing from about 1/4th circles of this groove.The two the most handy plastics manufacturing of screw and lining.As ABS resin, HI-POM or a kind of plastics with similarity.

Claims

1. toy apparatus for building, form by a kind of screw and a kind of building element, this screw has a hollow plastic bar, the outside of bar forms a threaded portion, this building element has a plastic bushing with corresponding female thread portion, it is characterized in that this lining or screw rod partly form at least one groove along its length, described groove extends along threaded portion.

2. according to a kind of toy apparatus for building of claim 1, it is characterized in that this lining and/or screw rod form several cannelures, these cannelures have identical axial range, and this screw rod and/or lining segmented are divided into several elastic parts.

3. screw that is used for the toy apparatus for building, comprise a hollow plastic bar, the outside of this bar forms a threaded portion, this threaded portion is packed into and is had in the hole of respective threaded part on another member that comprises in this toy apparatus for building, it is characterized in that, this screw rod partly forms at least one groove along its length, and described groove passes this threaded portion and extends.

4. according to a kind of screw of claim 3, it is characterized in that this screw rod forms several cannelures, these cannelures have identical axial range, and this screw rod segmented is divided into several elastic parts.

5. according to a kind of screw of claim 3 or 4, it is characterized in that this screw rod has two grooves, thereby make this elastic part become semicylinder.

6. according to a kind of screw of claim 3 or 4, it is characterized in that this screw rod has the groove of three equidistant arrangements in a circumferential direction.

7. a kind of building element that is used for the toy apparatus for building, comprise a cylindrical plastic lining, this plastic bushing has a female thread portion, the screw rod that has a respective threaded part to pack into, it is characterized in that, this lining partly forms at least one groove along its length, and described groove passes this threaded portion and extends.

8. according to a kind of building element of claim 7, it is characterized in that this lining forms several cannelures, these cannelures have identical axial range, and this lining segmented is divided into several elastic parts.

9. by a kind of building element of claim 7 or 8, it is characterized in that this lining has two grooves, thereby make this elastic part become semicylinder.

10. according to a kind of building element of claim 7 or 8, it is characterized in that the groove of this lining three equidistant arrangements of tool in a circumferential direction.