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
  • A63H33/105—Building blocks, strips, or similar building parts to be assembled by means of additional non-adhesive elements with grooves, e.g. dovetails
• • 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
  • A63H33/101—Building blocks, strips, or similar building parts to be assembled by means of additional non-adhesive elements with clip or snap mechanism

Definitions

• TOY BUILDING SET CONNECTOR FOR A TOY BUILDING BLOCK, AND TOY BUILDING BLOCK
• the present invention relates to a toy building set, which includes
• a connector series which includes a set of connec- tors intended to join the building blocks to each other, in which there are arms joined to each other and equipped with tips, and which arms can be fitted into a slot of a building block, the tips fitting into the locking recess, to join the building blocks to each other.
• the invention also relates to a connector and a toy building block.
• the connector principles of the toy building sets differ slightly from each other. However, they have in common a joint that is to some extent flexible and based on friction.
• One such building-block principle is a grooved wooden unit. A detachable connector element can be placed in the groove. This type is known from, among others, Finnish patent number 59930.
• the present invention is intended to create a toy building set, in which the blocks are attached to each other securely, but in which, on the other hand, the blocks and connectors can also be easily detached.
• the characteristic features of the toy build- ing set according to the invention are stated in Claim 1, those of the connector in Claim 15, and those of the toy building block in Claim 16.
• a locking slot pair Arranged on the bottom of the slots of the building blocks of the toy building set according to the invention is a locking slot pair, which is arranged to widen in the direction of the side of the building block while the points of the connectors are arranged to be formed of rigid lugs, which have a tip at their edge, and a narrow shank joining the lugs to each other. Using this combination ensures that the connector and through it also the blocks will be securely and firmly connected, but, on the other hand, also that the connectors can be easily- detached from the blocks.
• the locking slot pair can be easily formed in the block, for example, during its manufacture.
• the locking slot pair need not be a very large formation, as it is not, for example, subject to wear, being protected at the bottom of the slot. Being at the bottom of the slot, the locking slot pair also does not affect the aesthetic appearance of the block.
• the position relative to each other of the locking slot pair and the tip part of the edge of the connector that fits into it can be arranged to be such that they mutually interact to straighten the connector and at the same time connect the building blocks tightly to each other.
• the blocks can be joined together easily, nor, when joining the blocks together, for example, is there any need to rotate them relative to each other, instead they can be joined by pushing them straight towards each other.
• the hub between the shanks of the connector by means of which the connector is arranged to assume a central position in the side of at least one of the building blocks, can be formed from a flat member that is, in at least one direction, thinner at the sides than in the centre, which member will extend into the area of the slot when the connector is fitted into a building block.
• the member can include, on its opposite sides, an end slot running parallel to the edge, which makes the member at least partly hollow.
• the sides equipped with end slots can additionally be equipped with a cut that halves the side in question and runs towards the centre of the member.
• the torsion properties of the various parts of the connection can be arranged to be such that while they are easy to bend they are also, on the other hand, sure to return to nearly their original shape and thus form a secure lock with the block.
• Figure 1 shows end and side views of two building-block models of the system
• Figure 2a shows a top view, side cross-section, and end view of a first embodiment of the general connector of the system
• Figure 2b shows a top view, side view, and end view of a variation of the first embodiment of the general connector, by means of which the second element to be attached is centred and the counter piece can be placed freely in the direction of the slot
• Figure 3a shows a second embodiment of the general connector of the system
• Figure 3b shows an end view of the connector according to Figure 3a
• Figure 4a shows a top view, side cross-section, and end view of the connector according to Figures 3a and 3b,
• Figure 4b shows a top view, side cross-section, and end view of a variation of the second embodiment of the general connector, by means of which the second element being attached is centred and the counter piece can be placed freely in the direction of the slot,
• Figure 5a shows a top view, side view, and end view of a first embodiment of a general connector intended for the lateral attachment of triangular blocks
• Figure 5b shows a top view, side view, and end view of a second embodiment of a general connector intended for the lateral attachment of triangular blocks
• FIG ⁇ a shows an end view of the operating principle of the general connector according to Figure 2a
• Figure 6b shows a side view of the operating principle of the triangular-block connector according to Figure 5a.
• Figure 7a shows an end view of the operating principle of the general connector according to Figure 3a
• Figure 7b shows a side view of the operating principle of the triangular-block connector according to Figure 5b
• Figure 8 shows the construction of the intermediate plate of a general connector in a first embodiment, and the principle of detaching the connectors
• Figure 9 shows the construction of the intermediate plate of the second embodiment of the general connector and the principle of detaching the connectors
• Figure 10 shows a second example of the bevel shape of the 5 locking grooves
• Figure 11a shows a variation of the second embodiment of the general connector of the system
• Figure lib shows an end view of the connector according to
• Figure 12 shows the attachment of the blocks to each other using a connector according to Figures 11a and lib.
• the toy building set according to the invention includes a number of, for example, the building blocks 10.1, 11 shown in
• the connector set can include a set of connectors 15.1 - 15.6 shown in the later figures,
• Figure 1 shows end and side views of two building-block models
• Figure 1 shows an example of a rectangular toy building block 10.1 while the lower part of the figure shows an example of a triangular toy building block 11.
• the flat sides 12 of the building blocks 10.1, 11 there are slots 13 running parallel to
• the slots 13 may cross over each other, though a side equipped with only a single groove is also possible. All the sides 12 of rectangular blocks 10.1 can be equipped with slots 13, as can all the sides 12 of triangular blocks 11 except for the hypotenuse side.
• the slots 13 can be made in the blocks 10.1, 11 in a manner that is, as such, known, in which case each corner of the block 10.1, 11 will form a rectangular or triangular corner part equipped with a bevelled or rounded edge, which corner parts are attached to the centre of the block 10.1, 11. In this case, in the corner parts, both the outer edges and also the edges of the opening of the slot 13 are bevelled.
• the locking recess is a locking slot pair 14 arranged in the bottom 20 of the slot 13 of the block 10.1, 11. It widens the slot 13 in the direction of the side 12 of the building blocks 10.1, 11.
• the locking grooves 14 can run in a straight line to extend from end to end of the block 10.1, 11, in which case this will cross over each other at the corners of the block 10.1, 11.
• the locking grooves 14 form a pair of grooves on both sides of the slot 13, at least in the area where these cross each other, which crossover point of the slots 13 is in the centre of the sides 12 of the block 10.1, 11.
• the locking grooves 14 are on opposite sides of the wall surface of the slots 13, i.e. in this case very close to the bottom 20 of the slot 13.
• One example of the width Vl of the slots 13 can be 3 mm (or even only 2,5 mm), its depth 7,5 mm and the depth of the locking grooves 14 1 mm from the level of the wall of the slot 13, or even less.
• Figure 2a shows a top view of a first embodiment of the general connector 15.1 belonging to the system, a side cross-section
• the arms 18 are formed of rigid lugs 21 and a shank 22 connect- ing the lugs 21 to each other.
• the tip 19 can be at an angle of 90 degrees, in this case even slightly more.
• the tip 19 is formed of a bevelled surface 27 and the concave inner side of the arm 18.
• the concave shape is created by the angle of attachment of the lugs 21 to the shank 22, which in this case is about 145 degrees.
• the shank 22 too can be flexible to some extent.
• the convexness of the arms 18 at the (longitudinal) ends of the of connector 15.1 is opposite relative to each other.
• the alignment of the lugs 21 to the shank 22 is a mirror image.
• the arms 18 are connected to each other by means of a connector are 23 that connects the shanks 22 to each other and permits a rotating flexibility.
• the hub 16 can also be a hub 16 between the arms 18.
• the hub can be formed by a flat member 16 that is thinner than the centre part at the edges in at least one direction, which, when the connector 15.1 is fitted to a building block 10.1, 10.2, 11, extends longitudinally into the area of the slot 13 of the block 10.1, 10.2, 11.
• the member 16 can also fill the slot 13.
• the hub 16 can be formed of a circular, or alternatively according to Figure 2b a semicircular disc 16, 16.1.
• the hub disc 16, 16.1 that acts as an intermediate plate can be, for example, thinner at the edges than in the centre.
• the hub 16, 16.1 can be at a slant to the imaginary axial cross-sectional plane 5 of the arms 18 and the connector 15.1. This appears particularly clearly in the cross-section drawing in the right-hand lower corner of Figure 2a.
• the radius of the hub 16, 16.1 can be such that it does not extend outside the tip 19 of the lugs 21.
• the arm 18 there can be at least one lightening opening 25, 26.
• One of its first functions can be to improve the rotational flexing properties of the lugs 21 relative to the shank 22.
• the lightening openings can be formed of deep longitudinal recesses
• the shank reduces the rigidity of the lug 21 in the longitudinal director of the connector 15.1 and thus, by permitting rotational flexibility, facilitates the pressing of the connector 15.1 into the slot 13 of the block 10.1.
• the possible internal curve 26 at 0 both ends of the connector 15.1 for its part permits the easy detaching of the connector 15.1 from the block 10.1, also, for example, using a finger nail as an aid.
• Figure 2b shows a top view, side view, and end view of a varia- 5 tion of the first embodiment of the general connector, being a connector 15.2 that centres on one side.
• a connec- tor 15.2 of this kind one of the building-block elements being attached is centred, while the block that is the counter-piece can be placed freely in the desired location parallel to the side 12 of the block.
• the centring, slanting intermediate-plate disc 16.1 can, according to one embodiment, also be halved.
• Such a disc 16.1 is obtained, if one half of the intermediate plate 16 of the connector 15.1 shown in Figure 2a is cut off, so that only the semicircular second half re- 10 mains.
• the disc 16.1 is then on the same side of the connector 15.2 as the lugs 21 on the longitudinal side.
• This semicircular disc 16.1 too can be thinner at the edges than in the centre part and, in additional, lie at a slant to the imaginary axial cross-sectional plane of the arms
• Figures 3a and 3b show a side view and an end perspective view of a second embodiment of the general connector 15.3 of the
• the hub 16.2 of the connector 15.3 now has a square shape and its is internally at least partly hollow.
• lightening slots 44 parallel to the edges are cut in the opposite edges of the hub 16.2, so that the hub 16.2 will to some extent collapse on
• the opposite sides 42.1 of the square hub 16.2 parallel to the lugs 21 can thin towards the edges of the hub 16.2 that lie against the bottom 20 of the slot 13 in the blocks. From the centre and from the side of the sides equipped with slots 44 the thickness of the intermediate plate 16.2 can even be equivalent to the width of the slot 13, or even greater.
• a slot 44 that makes the intermediate plate 16.2 hollow in at least part of the direction of its plane allows the intermediate plate 16.2 to even slightly collapse onto itself in the direction of its plane, in which case the intermediate plate 16.2 is pressed tightly into the slots 13 of the blocks. In addition, it facilitates the detaching of the connector 15.3 from the blocks.
• Figure 4a shows a top view, a side cross-section, and an end view of the embodiment shown in Figures 3a and 3b.
• the connector 15.3 corresponds to the embodiment shown in Figure 2a, the corresponding point of which will not be reviewed again in greater detail in this connection. How- ever, the internal lightening recesses 25 of the connector 15.3 are now deeper. In addition, at the ends 26 of the connector 15.3 there is no internal lightening curve at all, instead the ends 26 are straight.
• the connector 15.3 can be easily detached from a block, as an even better finger-and- thumb grip can be obtained from the lug 21 that is visible at one end of it than from the connector 15.1 equipped with an internal curve 26, and thus the connector 15.3 is detached from the block by pulling on wider blade-like lug 21.
• the hub 16.2 is at right angle to the longitudinal director of the connector 15.3.
• the connecting area 23 is slightly rounded ( Figure 4a) .
• the rounding can be arranged to be such that the cross-section of the shank 22 and the connecting area 23 is concave of the side of the lugs 21 of the arms 18 and thus convex on the back side of the arms 18. This further improves the grip of the connector 18 and pulls the blocks that are to be attached to each other even more tightly to- gether.
• the rigidity of the connector 15.3 in the longitudinal direction improves and it has also greater torsional rigidity.
• the curved form of the connecting area 23 also creates an advantage in that, when pulling the connector 15.3 away from the block, the concave side of the connecting area 23 opposes the wall of the slot 13 in the block and due to it the connector 15.3 will easily slide out of the slot 13 in the block.
• Another advantage achieved by the curved form of the connecting area 23 is that, when detaching the connector 15.3 from a block, it will need to be turned less in the direction of the width of the connector 15.3, so that the tip 19 of the lug inside the block will slide out of the locking recess 14 in the block.
• FIG 4b shows top, side, and end views of a variation of the second embodiment of the general connector 15.4.
• the basic principles of the connector 15.4 correspond to the connector 15.3 shown in Figure 4a.
• the other block element being attached is also centre while the counter piece can be freely positioned in the direction of the slot 13.
• the lightening recesses 25 now run to different depths on the different sides of the connector 15.4.
• the lightening recesses 25 on the side with the possible hub plate 16.3 can be deeper than on the side of the connector without the intermediate plate.
• the hub disc 16.3 does not now have a circular shape, but instead is in the shape of a rectangle that may be slightly rounded at its corners. In this case, the hub 16.3 is now also at right angles relative to the longitudinal direction of the connector 15.4. An embodiment entirely without a hub disc is, of course, also possible .
• the toy building set according to the invention can also in- elude triangular blocks 11 according to the lower part of
• Figure 5a shows top, side, and end views of a first variation 15.5 of the general connector, intended for the lateral attachment of triangular blocks 11.
• a first variation 15.5 of the general connector intended for the lateral attachment of triangular blocks 11.
• the connectors 15.5 belonging to the connector series can be eguipped with arms 18, to the back side of which guide and alignment studs 29 are fitted.
• the triangular blocks 11 can be attached laterally precisely to the other triangular building blocks 11 of the toy building set.
• the connector
• the studs 29 can be at one end of the connector 15.5 in the lug 21' and they can have a shape that is short (e.g., 2,5 mm) and slightly conical.
• the opposite arm 18 can be like that shown in Figure 2a or 4a.
• the extreme end of the arm 18 on the stud 29 side of the connector 15.5 in the longitudinal direction can have a rectangular shape.
• the studs 29 are located at the extreme corners of the lugs 21' .
• the 5 connector 15.5 can also be without an actual hub disc 16, 16.1 - 16.3.
• the studs 29 achieve the positioning of the connector 15.5 in the desired manner relative to the side 12 of the block 10.1, 10.2, 11.
• Figure 5b shows a side and end view of a second variation of the general connector 15.6 intended for the lateral attachment of triangular blocks 11.
• the guide and alignment studs are slightly longer and thicker than in the embodiment of Figure 5a.
• Figure 6a shows the operating principle of the general connector 15.1 shown in Figure 2a in the case of rectangular blocks 10.1, 10.2, seen from the end of the connector 15.1 and the blocks 10.1, 10.2.
• the arms 18 of the connector 15.1 fitted between the blocks 10.1, 10.2 can be fitted into the slot 13 in the sides 12 of the building blocks 10.1, 10.2, in order to attached the blocks 10.1, 10.2 to each
• the tip 19 of the arm 18 of the connectors 15.1 - 15.6 is arranged to settle in place and secure itself to the locking recess 14 in the slot 13 of the block 10.1, 10.2.
• the connector 15.1 - 15.4 can be centred in the centre of the side
• the tip 19 of the arm 18 and the locking groove 14 in the slot 13 of the block 10.1, 10.2 are arranged, when attached to each other, to interact in such a way that they straighten the connector 15.1 - 15.6 and at the same time connect the building blocks 10.1, 10.2, 11 to each other by pulling them tightly together.
• the straightening effect is also created by the lugs 21 at the opposite corners of the connector 15.1 - 15.6 being aligned in opposite directions to each other.
• the connector 15.1 In order that the connector 15.1 will pull both blocks 10.1, 10.2 tightly against each other, the connector 15.1 must be dimensioned in such a way that empty spaces O, N remain between the connector 15.1 and the bottom 20 of the slot 13 of the block 10.1, 10.2.
• the space N remains between the end of the lug 21 and the bottom 20 of the block 10.2 while the space O remains between the bevel 27 and the second bevel 14.2 of the locking groove 14 (inset in Figure 10) .
• the retentive capacity of the connector 15.1 - 15.6 according to the invention is mainly based on the space requirement V ( Figure 2a) of the flexible part 21 of the connector 15.1 - 15.6 being slightly larger than the slot 13 width Vl ( Figure 1) it requires, plus the expansion created by the locking groove 14 ( Figure 1) .
• V Figure 2a
• the state of torsional stress arises in the connection area 23 between the arms 18 of the connector 15.1 - 15.6, when the connector 15.1 - 15.6 is pushed into the slot 13 of the block 10.1.
• the state of torsional stress causes the combined space requirement of the arms 18 at both ends of the connector 15.1 - 15.6 to increase further.
• FIG. 6b shows a side view of the operating principle of the connector 15.5 for triangular blocks 11. It shows that a conical stud 29 is used to align the connector 15.5 and at the same time the triangular blocks 11, to be attached using it, pre- cisely with each other.
• the shape of the stud 29 can be such that it is easy to detach the stud 29 without touching the walls of the slot 13 of the block 11.
• Figure 7a shows an end view of the operating principle of the general connector 16.3 according to Figure 3a.
• Figure 7b shows a side view of the operating principle of triangular-block connector 15.6 shown in Figure 5b. It shows that the stud 29 can be dimensioned to have a length that extends to the level of the bottom 20 of the slot 13, but not, however, to the slot 13.
• Figure 8 shows views from different directions of the construction of the intermediate plate 16 of the general connector 15.1 shown in Figure 2a and of the principle of detaching the connectors.
• the claw 19 of the connector 15.1 to be set in the locking recess 14 at the bottom of the slot 13 of the block 10.1 pulls the blocks tightly to each other and releases part of the stress created in the connector 15.1. This straightens the connector 15.1 and facilitates pushing it in the slot 13 of the counter block.
• the stress in the connector 15.1 is partly released and when, for example, the nail of the finger or thumb is used to rotate outwards Pl from the outer edge P2 of the curved recess 26 at one end of the connector 15.1 from the block 10.1 with a slanting movement, and towards the centre line P of the block 10.1, the retaining stress vanishes entirely. This causes the connector 15.1 to detach easily from the second arm end and after this it is easy to also detach the second end.
• the claws 28 in the back side of the arms 18 correspond to the wall of the slot 13 of the building block 10.1, 10.2, 11, which is the opposite wall to the wall of the locking 5 groove 14 used at that moment in the lug 21 in question.
• the claw 28 is used to reinforce the grip of the connector 15.1 - 15.6 in the block 10.1, 10.2, 11.
• the step 28 can be, for example, at the boundary between the shank 22 and the lugs 21.
• the connectors 15.1 - 15.6 are dimensioned to be slightly smaller relative to the depth of the slot 13 (spaces O and N in Figure 6a), in which case the connectors 15.1 - 15.6 do not only hold the blocks
• half of the width W of the connector 15.1 shown in Figure 2a can be slightly smaller than the depth of the slots 13 of the building blocks 10.1, 10.2, 11.
• the length L of the connectors 15.1 - 15.6 ( Figure 2a) can be at most the length of the shorter side 12 of the building block 10.1, 10.2, 11, in other words at most the same as the thickness of the block 10.1, 10.2, 11.
• 30 length of the length L of the connector is 24 mm, the length of the shorter side 12 of the block 10.1, 10.2, 11 being 30 mm.
• the length of the longer side 12 of the block 10.1, 10.2, 11 can be, for example, 45 mm.
• the thickness of the connector 15.1 - 15.6 in the flexing direction V ( Figure 2a)
• the thickness V of the connector 15.1 - 15.6 can be 3 mm.
• a bevel 27 of, for example, 45 degrees, is arranged in the tip 19 of the arm 18 for the locking groove 14.
• the bevel 27 in the tip 19 of the arms 18 of the connector 15.1 facilitates the initial stages of pushing the connector 15.1 into the slot 13 of the block 10.1, 10.2, 11, as it makes contact with the contact surface, which can also be at 45 degrees for example, of the counter bevels 33 in the opening of the slots 13 of the block 10.1.
• Figure 9 shows the construction of the hub centre plate 16.2 of a second general-connector embodiment 15.4, as well as the principle of detaching the connectors 15.3.
• the edges 33 of the blocks 10.1 are not bevelled, but rounded. It is now possible to get a good thumb grip Pl, P2 on the lugs 21, because there is no internal curve 26 in the ends, thus making it possible to get a better grip on the lug 21.
• Figure 10 shows a second embodiment of the bevels 14.1, 14.2 of the grooves 14 forming the locking slot pair.
• the bevel 14.2 closer to the bottom 20 of the slot 13 is steeper relative to the bevel 14.1 that is farther from the bottom 20 of the slot 13. Due to this feature, the connector 15.1 - 15.6 according to the invention as it were ⁇ sucks' the blocks even more strongly to each other, and thus does not simply provide a force that holds the blocks together.
• wood could live over time, so that the bevels 14.1, 14.2 that differ from each other also provide a retentive solution to the problem caused by the possible living of the wood.
• the inset in Figure 10 shows the steepnesses of the bevels 14.1, 14.2 of the grooves 14. It is obvious that groove bevels 14.1, 14.2 with such steepnesses can be applied in any of the blocks 10.1, 10.2, 11 and in the case of any of the connectors 15.1 - 15.6 according to the invention.
• Figures 11a and lib show yet another variation of the connector shown in Figures 3a and 3b.
• the hub 16.2 of the connector 15.3 is square in shape, but parts have been cut off its corners.
• the connector 15.3 corresponds to those shown in Figures 3a and 3b. The cut has been made in such a way that straight part of each side of the square 16.2 will be of the same dimension.
• Figure 12 shows blocks being attached to each other using a connector 15.3 according to Figures 11a and lib.
• the connectors 15.3 are on all sides of the block 10.2
• the cut corners of their hubs 16.2 lie against each other and thus permit the blocks 10.1, 10.2 to be attached to each other in the arrangement shown.
• the cut corners of the hubs 16.2 of the connectors 15.3 permit two blocks 10.1 to be attached to the adjacent longer sides of the corner block 10.2.
• the connector embodiment described above, the hubs of which are squares, do not permit a connection of this kind.
• the connectors 15.1 - 15.6 according to the invention can be manufactured, for example, using the injection-moulding tech- nique.

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• 2007
  • 2007-02-05 FI FI20075073A patent/FI20075073A7/fi not_active IP Right Cessation
• 2008
  • 2008-02-05 EP EP08709310A patent/EP2117664A4/de not_active Withdrawn
  • 2008-02-05 WO PCT/FI2008/050042 patent/WO2008096039A1/en not_active Ceased
  • 2008-02-05 US US12/449,342 patent/US20100009593A1/en not_active Abandoned

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