WO2000007680A1 - Movement mechanism for the legs of a toy - Google Patents

Movement mechanism for the legs of a toy Download PDF

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Publication number
WO2000007680A1
WO2000007680A1 PCT/EP1998/008505 EP9808505W WO0007680A1 WO 2000007680 A1 WO2000007680 A1 WO 2000007680A1 EP 9808505 W EP9808505 W EP 9808505W WO 0007680 A1 WO0007680 A1 WO 0007680A1
Authority
WO
WIPO (PCT)
Prior art keywords
leg
movement
trunk
link
distal
Prior art date
Application number
PCT/EP1998/008505
Other languages
French (fr)
Inventor
Maurizio Ferrari
Original Assignee
Giochi Preziosi S.P.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Giochi Preziosi S.P.A. filed Critical Giochi Preziosi S.P.A.
Priority to AU21638/99A priority Critical patent/AU2163899A/en
Publication of WO2000007680A1 publication Critical patent/WO2000007680A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H11/00—Self-movable toy figures
    • A63H11/18—Figure toys which perform a realistic walking motion

Definitions

  • the invention relates to the field of movement mechanisms for the legs of toys, particularly but not exclusively dolls, of the type in which the leg is articulated to the hip in such a way as simultaneously to execute an anteroposterior pivoting movement and a lifting and lowering movement, so that any point on the femoral part of the leg moves in a closed loop.
  • the mechanism comprises a U-shaped leg support attached to one leg and moved by an eccentric pin on a rotating drum and simultaneously optionally restrained in its movement by walls integral with the body.
  • Fig. 5 Prior Patent US 2,641,864 by Villemejane describes and illustrates in Fig. 5 a toy with articulated legs jointed at the knee, in which the movement mechanism comprises a femoral rod 10, with a slotted link motion and a link 1 parallel and anterior thereto, the rod and link being hinged at the upper end to the trunk and at the lower end to a distal or inferior rigid portion of the leg.
  • This connection which is practically a four-bar chain keeps the position of the inferior part of the leg effectively parallel with itself so that the leg runs on rollers moving along the ground. The movement of the leg does not therefore resemble a natural walking movement.
  • a four-bar chain movement mechanism is also disclosed in WO 92/21416 in which a link 180 is mounted behind a doll's knee articulation; the movement of the distal part of the leg and of the foot parallel to itself is exploited as a roller-skating movement.
  • One object of this application is therefore to produce a natural walking movement in which each leg, jointed at the knee, touches the ground heel first and then the toe.
  • the object has been achieved in the form of a movement mechanism as stated in Claim 1.
  • the mechanism comprises, in addition or in combination with a hip articulation and movement device, for each leg, a hinge mounting of the distal part of the leg, or inferior portion thereof, approximately at the knee and a movement link hinged in a fixed position to a preferably posterior part of the trunk of the toy and to the said distal part of the leg or of a rigid rod fixed thereto; the link and the line joining the hinge pin of the hip and the hinge pin of the knee converge towards the knee. More specifically, the link and the proximal or femoral rod of the leg are convergent from a proximal end towards a distal end.
  • the new mechanism achieves, without other sources of drive, an articulated movement of the leg exactly similar to the gait of a person, i.e. with each foot coming down first on the sole or heel and then on the toe, in the case of a forward walking motion.
  • Fig. 1 is a front view of the trunk and legs of a doll comprising the movement mechanism according to the present invention
  • Fig. 2 is a side view from the left with respect to Fig. 1;
  • Fig. 3 is a side view from the right with respect to Fig. 1;
  • Fig. 4 is a front view of an alternative to the previous figures.
  • Fig. 5 is a view from the left with respect to Fig. 4 ;
  • Fig. 6 is a view similar to Fig. 5 but illustrates the device in a different phase of movement
  • Fig. 7 shows a side view of a variant of the mechanism
  • Fig. 8 shows a succession of phases in the walking movement of the mechanism of Figs. 4-6;
  • Fig. 9 shows a succession of phases in the walking movement of a mechanism as in Fig. 7.
  • a doll indicated as a whole by the reference 10, comprises a trunk 12 and legs 14 and 16.
  • Each leg 14, 16 is of a rigid material and is articulated to the trunk at a hip articulation bearing the general references 18 and 20, respectively.
  • the hip articulation of each leg is not described here in detail and may be of any type known in the field to date. Such an articulation can be read about in particular in the said prior Italian Patent Application MI97A 001181.
  • any known articulation mechanism is suitable provided it causes each leg to perform a movement of forward and backward pivoting and simultaneously of lifting and lowering, with a phase shift of 180° of one leg 14 with respect to the other leg 16.
  • the eccentric axes of the hip articulation pins for the legs have been indicated by references a.18 and a20, respectively.
  • each leg 14 or 16 comprises two parts or elements, a proximal or femoral part 14p and a distal or tibial part 14d, respectively (and likewise a proximal part 16p and a distal part 16d, for the leg 16) ; these parts are rigid and hinged to each other such that each distal part 14d and 16d can rotate through at least a certain angle about an axis which is substantially horizontal in the figure and marked al4 for leg 14 and al6 for leg 16.
  • the invention also provides a link denoted 24 for leg 14 and 26 for leg 16.
  • Each link 24, 26 pivots at 24', 26', respectively, on the trunk part of the doll and at 24'' and 26'', respectively, in the distal part 14d, 16d of the respective leg. It is helpful for each link preferably to be located inside each leg so as to be more or less out of sight .
  • each link 24, 26 is convergent with this joining line rl4, rl6, respectively, in the hip-to-knee direction.
  • the axis al4 or al6, respectively undergoes a small movement away from the trunk, this is translated into a rotation of the distal part of the leg about the axis 24'', which is found to be extremely similar to the movement of the leg of a person walking.
  • FIGs. 1, 2 and 3 depict partially a toy 100 with a trunk 112 and legs 114, 116 whose movement is effected by means of rigid rods 114p, 114d, 124, 116p, 116d, 126 which can be variously covered with soft material such as rubber, a plastic material or cloth, or incorporated in an envelope.
  • the pivoting and lifting movement is imparted by the movement mechanism.
  • the movement mechanism may in this case also be a mechanism as described in Application MI97A 001181.
  • the pins of the movement mechanism are indicated by their axes, that is all8 for hip articulation 118 and a.120 for hip articulation 120.
  • the leg 114 comprises a proximal rod 114p connected rotatably on the axis a.118 and a distal rod 114d connected rotatably to the proximal rod on the axis all4.
  • Reference rll4 indicates a line joining the axis a.118 and the axis a.114 in the plane of Fig. 5.
  • a link 124 is pivoted at 124' to the trunk 112 and at 124'' to the distal rod 114d.
  • the axis 124' is posterior to the axis all8; the axis 124'' is distal (in this case) compared with the axis all4.
  • the link 124 and the proximal rod 114p (or rather the line rll4) are convergent in the downward direction, i.e. towards a distal position.
  • the leg 116 comprises a proximal rod 116p connected rotatably on the axis al20 and a distal rod 116d connected rotatably to the proximal rod 116p on the axis a.116.
  • rll6 will indicate a line (not visible in the figures) joining a.120 to all6.
  • a link 126 is pivoted at 126' to the trunk 112 and at 126'' to the distal rod 116d.
  • the axis 126' is posterior to the axis a.120.
  • the link 126 and the proximal rod 116p (or rather the line rll6) are convergent in a downward direction, in other words towards a position off the leg.
  • Figs. 4 to 6 The operation of the mechanism of Figs. 4 to 6 is identical to that of Figs. 1 to 3 and will not be described here in detail .
  • the walking movement is illustrated in sequence in Fig. 8.
  • Fig. 7 illustrates a variant of the mechanism of Figs. 4-6 and carries the same reference numbers.
  • the lower or distal pin 124'' of the link is situated at the same level as or even above the axis a.114 of the lower or distal pin of the proximal or femoral rod 114p.
  • the link 124 and the femoral rod 114p are convergent .
  • the walking movement of this variant is illustrated in Fig. 9.

Abstract

Each leg of the toy comprises a femoral or proximal part (114p) and a distal or tibial part (114d) which are articulated to each other. The proximal part is articulated to the trunk in such a way that it can execute a movement of forward and backward pivoting and lifting-lowering, so as to describe a closed loop. The mechanism includes a link (124) which is hinged to the rear of the trunk of the toy and to the distal part of each leg and is convergent with the femoral rod (or with the line joining the axes of the pins of the femoral part) towards the distal part. The result is a movement similar to the walking movement of a human being.

Description

MOVEMENT MECHANISM FOR THE LEGS OF A TOY
DESCRIPTION
The invention relates to the field of movement mechanisms for the legs of toys, particularly but not exclusively dolls, of the type in which the leg is articulated to the hip in such a way as simultaneously to execute an anteroposterior pivoting movement and a lifting and lowering movement, so that any point on the femoral part of the leg moves in a closed loop.
An earlier application by the same applicant, No. MI97A 001181, discloses an articulation mechanism of this kind for dolls with rigid legs articulated only at the hip to the trunk part . This application should be referred to for an explanation of the mechanism. The mechanism comprises a U-shaped leg support attached to one leg and moved by an eccentric pin on a rotating drum and simultaneously optionally restrained in its movement by walls integral with the body.
One drawback with the mechanism disclosed in the earlier application is that, while it gives a very natural movement at the hip, it is nonetheless only applicable to legs rigid from the hip to the heel. There is therefore a need to provide a more natural walking movement for a toy by making the leg jointed at the knee and controlling the movement of the distal or inferior part of the leg.
Prior Patent US 2,641,864 by Villemejane describes and illustrates in Fig. 5 a toy with articulated legs jointed at the knee, in which the movement mechanism comprises a femoral rod 10, with a slotted link motion and a link 1 parallel and anterior thereto, the rod and link being hinged at the upper end to the trunk and at the lower end to a distal or inferior rigid portion of the leg. This connection, which is practically a four-bar chain keeps the position of the inferior part of the leg effectively parallel with itself so that the leg runs on rollers moving along the ground. The movement of the leg does not therefore resemble a natural walking movement.
A four-bar chain movement mechanism is also disclosed in WO 92/21416 in which a link 180 is mounted behind a doll's knee articulation; the movement of the distal part of the leg and of the foot parallel to itself is exploited as a roller-skating movement.
The problem of producing a natural walking movement has not therefore been solved.
One object of this application is therefore to produce a natural walking movement in which each leg, jointed at the knee, touches the ground heel first and then the toe.
The object has been achieved in the form of a movement mechanism as stated in Claim 1. The mechanism comprises, in addition or in combination with a hip articulation and movement device, for each leg, a hinge mounting of the distal part of the leg, or inferior portion thereof, approximately at the knee and a movement link hinged in a fixed position to a preferably posterior part of the trunk of the toy and to the said distal part of the leg or of a rigid rod fixed thereto; the link and the line joining the hinge pin of the hip and the hinge pin of the knee converge towards the knee. More specifically, the link and the proximal or femoral rod of the leg are convergent from a proximal end towards a distal end.
Other new and useful characteristics are stated in the subsequent claims .
Using the drive envisaged for the articulation of the hip, the new mechanism achieves, without other sources of drive, an articulated movement of the leg exactly similar to the gait of a person, i.e. with each foot coming down first on the sole or heel and then on the toe, in the case of a forward walking motion. Examples of embodiments of the invention will be described below by way of non-restrictive illustration only, with reference to the accompanying figures in which:
Fig. 1 is a front view of the trunk and legs of a doll comprising the movement mechanism according to the present invention;
Fig. 2 is a side view from the left with respect to Fig. 1;
Fig. 3 is a side view from the right with respect to Fig. 1;
Fig. 4 is a front view of an alternative to the previous figures;
Fig. 5 is a view from the left with respect to Fig. 4 ;
Fig. 6 is a view similar to Fig. 5 but illustrates the device in a different phase of movement;
Fig. 7 shows a side view of a variant of the mechanism;
Fig. 8 shows a succession of phases in the walking movement of the mechanism of Figs. 4-6; and
Fig. 9 shows a succession of phases in the walking movement of a mechanism as in Fig. 7.
The description of the present invention will be given below with particular reference to limbs of toys moved by the mechanism disclosed in application MI97A 001181, but it should be understood that the present invention can be applied not only with that prior mechanism but also with other mechanisms.
Referring to Figs. 1-3, a doll, indicated as a whole by the reference 10, comprises a trunk 12 and legs 14 and 16. Each leg 14, 16 is of a rigid material and is articulated to the trunk at a hip articulation bearing the general references 18 and 20, respectively. The hip articulation of each leg is not described here in detail and may be of any type known in the field to date. Such an articulation can be read about in particular in the said prior Italian Patent Application MI97A 001181. As has been stated, any known articulation mechanism is suitable provided it causes each leg to perform a movement of forward and backward pivoting and simultaneously of lifting and lowering, with a phase shift of 180° of one leg 14 with respect to the other leg 16. The eccentric axes of the hip articulation pins for the legs have been indicated by references a.18 and a20, respectively.
According to the invention, each leg 14 or 16 comprises two parts or elements, a proximal or femoral part 14p and a distal or tibial part 14d, respectively (and likewise a proximal part 16p and a distal part 16d, for the leg 16) ; these parts are rigid and hinged to each other such that each distal part 14d and 16d can rotate through at least a certain angle about an axis which is substantially horizontal in the figure and marked al4 for leg 14 and al6 for leg 16. For each leg the invention also provides a link denoted 24 for leg 14 and 26 for leg 16. Each link 24, 26 pivots at 24', 26', respectively, on the trunk part of the doll and at 24'' and 26'', respectively, in the distal part 14d, 16d of the respective leg. It is helpful for each link preferably to be located inside each leg so as to be more or less out of sight .
In accordance with an important feature of the present invention, if it is imagined that for each leg a straight line (rl4, rl6, drawn in chain lines) is traced so as to join the axis of articulation of the hip to the axis of the hinge pin of the knee, each link 24, 26 is convergent with this joining line rl4, rl6, respectively, in the hip-to-knee direction. When, because of the hip articulation, the axis al4 or al6, respectively, undergoes a small movement away from the trunk, this is translated into a rotation of the distal part of the leg about the axis 24'', which is found to be extremely similar to the movement of the leg of a person walking.
It should be noted in particular that if, by means of the drive device, the hip articulation is moved as indicated by the arrows F, F' in Fig. 2, that is to say posterior-anterior in the clockwise direction when viewed from the side, the leg will have a movement very similar to that of a human walking forwards. Conversely, if the hip articulation is moved in the opposite way to that shown in Fig. 2, that is to say with an anticlockwise circulation when viewed from the side, a backward walking movement will be produced.
While Figs . 1, 2 and 3 , and the description relating to these, are applied to a doll with rigid limbs articulated to each other, Figs. 4, 5 and 6 depict partially a toy 100 with a trunk 112 and legs 114, 116 whose movement is effected by means of rigid rods 114p, 114d, 124, 116p, 116d, 126 which can be variously covered with soft material such as rubber, a plastic material or cloth, or incorporated in an envelope. The pivoting and lifting movement is imparted by the movement mechanism.
The movement mechanism may in this case also be a mechanism as described in Application MI97A 001181. The pins of the movement mechanism are indicated by their axes, that is all8 for hip articulation 118 and a.120 for hip articulation 120.
The leg 114 comprises a proximal rod 114p connected rotatably on the axis a.118 and a distal rod 114d connected rotatably to the proximal rod on the axis all4. Reference rll4 indicates a line joining the axis a.118 and the axis a.114 in the plane of Fig. 5. A link 124 is pivoted at 124' to the trunk 112 and at 124'' to the distal rod 114d. The axis 124' is posterior to the axis all8; the axis 124'' is distal (in this case) compared with the axis all4. The link 124 and the proximal rod 114p (or rather the line rll4) are convergent in the downward direction, i.e. towards a distal position.
The leg 116 comprises a proximal rod 116p connected rotatably on the axis al20 and a distal rod 116d connected rotatably to the proximal rod 116p on the axis a.116. In the text, rll6 will indicate a line (not visible in the figures) joining a.120 to all6. A link 126 is pivoted at 126' to the trunk 112 and at 126'' to the distal rod 116d. The axis 126' is posterior to the axis a.120. The link 126 and the proximal rod 116p (or rather the line rll6) are convergent in a downward direction, in other words towards a position off the leg.
The operation of the mechanism of Figs. 4 to 6 is identical to that of Figs. 1 to 3 and will not be described here in detail . The walking movement is illustrated in sequence in Fig. 8.
Fig. 7 illustrates a variant of the mechanism of Figs. 4-6 and carries the same reference numbers. In this variant the lower or distal pin 124'' of the link is situated at the same level as or even above the axis a.114 of the lower or distal pin of the proximal or femoral rod 114p. The link 124 and the femoral rod 114p are convergent . The walking movement of this variant is illustrated in Fig. 9.

Claims

1. Movement mechanism for the legs of a toy comprising a trunk (12; 112) and legs (14, 16; 114, 116), each articulated to the trunk at a hip part (118, 120) , each leg comprising a first rigid element (14p, 16p; 114p, 116p) articulated to the trunk at the hip so that it can execute a forward and backward pivoting movement combined with a lifting/lowering movement, characterized in that it also comprises, for each leg: a second or distal rigid element (14d, 16d; 114d, 116d) hinged to the first or proximal rigid element at an axis (al4, a.16) of articulation of the knee, and a link (24, 26; 124, 126) hinged at one end to a fixed point (24', 26'; 124', 126') on the trunk and at the other end (24", 26"; 124", 126") to the said second or distal rigid element of the leg; the said link being convergent with a straight line (rl4, rl6, rll4, rll6) joining the articulation of the hip to the articulation of the knee of each leg.
2. Mechanism according to Claim 1, characterized in that the said link (24, 26; 124, 126) is posterior, with reference to the trunk, relative to the said joining line (rl4, rl6; rll4, rll6) .
3. Mechanism according to Claim 1, characterized in that the first leg element consists of a proximal part or femoral part (14p, 16p) of a leg, having a housing for the said link (24, 26) and the second leg element consists of a rigid distal or tibial part (14d, 16d) of the leg.
4. Mechanism according to Claim 1, characterized in that the first leg element comprises a rigid proximal rod
(114p, 116p) and the second leg element comprises a rod
(114d, 116d) .
5. Mechanism according to Claim 1, characterized in that it comprises means for driving the movement of the first or proximal rigid element of each leg, the said means being capable of generating a movement in the form of a closed loop which is travelled in a clockwise or anticlockwise direction.
PCT/EP1998/008505 1998-08-03 1998-12-30 Movement mechanism for the legs of a toy WO2000007680A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU21638/99A AU2163899A (en) 1998-08-03 1998-12-30 Movement mechanism for the legs of a toy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI98A001818 1998-08-03
IT1998MI001818A IT1301896B1 (en) 1998-08-03 1998-08-03 MOVEMENT MECHANISM FOR THE LEGS OF A TOY, PARTICULARLY A DOLL, WITH KNEE ARTICULATION.

Publications (1)

Publication Number Publication Date
WO2000007680A1 true WO2000007680A1 (en) 2000-02-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/008505 WO2000007680A1 (en) 1998-08-03 1998-12-30 Movement mechanism for the legs of a toy

Country Status (4)

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AU (1) AU2163899A (en)
IT (1) IT1301896B1 (en)
TW (1) TW385256B (en)
WO (1) WO2000007680A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6146235A (en) * 1997-05-20 2000-11-14 Giochi Preziosi S.P.A. Movement assembly, particularly for the legs of a doll
US6602106B2 (en) 2001-07-20 2003-08-05 Lik Yuen Cheung Walking device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1787174A (en) * 1928-04-23 1930-12-30 Ernest H Schmidt Mechanical movement and toy
US2641864A (en) 1947-05-05 1953-06-16 Cie Du Celluloid Petiteollin O Walking figure toy
US4177602A (en) * 1978-07-26 1979-12-11 Choi Eun S Automated mechanism for imparting movement to limbs of a mechanical toy
WO1992021416A1 (en) 1991-05-31 1992-12-10 Mattel, Inc. Skating doll having linear wheeled skates
ITMI971181A1 (en) 1997-05-20 1998-11-20 Giochi Preziosi Spa HANDLING COMPLEX PARTICULARLY FOR THE LEGS OF A DOLL

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1787174A (en) * 1928-04-23 1930-12-30 Ernest H Schmidt Mechanical movement and toy
US2641864A (en) 1947-05-05 1953-06-16 Cie Du Celluloid Petiteollin O Walking figure toy
US4177602A (en) * 1978-07-26 1979-12-11 Choi Eun S Automated mechanism for imparting movement to limbs of a mechanical toy
WO1992021416A1 (en) 1991-05-31 1992-12-10 Mattel, Inc. Skating doll having linear wheeled skates
ITMI971181A1 (en) 1997-05-20 1998-11-20 Giochi Preziosi Spa HANDLING COMPLEX PARTICULARLY FOR THE LEGS OF A DOLL

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6146235A (en) * 1997-05-20 2000-11-14 Giochi Preziosi S.P.A. Movement assembly, particularly for the legs of a doll
US6602106B2 (en) 2001-07-20 2003-08-05 Lik Yuen Cheung Walking device

Also Published As

Publication number Publication date
IT1301896B1 (en) 2000-07-07
AU2163899A (en) 2000-02-28
ITMI981818A0 (en) 1998-08-03
ITMI981818A1 (en) 2000-02-03
TW385256B (en) 2000-03-21

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