U.S. patent application number 09/923698 was filed with the patent office on 2003-02-13 for dynamic skater toy.
Invention is credited to Kawashiro, Yoichiro.
Application Number | 20030032363 09/923698 |
Document ID | / |
Family ID | 25449122 |
Filed Date | 2003-02-13 |
United States Patent
Application |
20030032363 |
Kind Code |
A1 |
Kawashiro, Yoichiro |
February 13, 2003 |
Dynamic skater toy
Abstract
A dynamic skater toy includes a trunk member having a front
pivot shaft that projects from left and right sides of a lower
front portion of the trunk member. Each of a pair of leg members is
coupled pivotally to the front pivot shaft adjacent to a respective
one of the left and right sides of the lower front portion, and is
capable of forward and rearward swinging movement about the front
pivot shaft. A link mechanism is disposed in each leg member and
couples pivotally the respective leg member to a respective foot
member such that the former is capable of limited forward and
rearward pivoting movement relative to the latter. A wheel
mechanism is mounted in each foot member and includes a plurality
of rollers to be placed in rolling contact with a surface, and a
drive unit for driving the foot member to translate on the
surface.
Inventors: |
Kawashiro, Yoichiro;
(Funabashi City, JP) |
Correspondence
Address: |
Ladas & Parry
Suite 1200
224 South Michigan Avenue
Chicago
IL
60604
US
|
Family ID: |
25449122 |
Appl. No.: |
09/923698 |
Filed: |
August 7, 2001 |
Current U.S.
Class: |
446/226 |
Current CPC
Class: |
A63H 11/10 20130101;
A63H 13/04 20130101 |
Class at
Publication: |
446/226 |
International
Class: |
A63H 003/06 |
Claims
I claim:
1. A dynamic skater toy comprising: a trunk member having a lower
front portion with left and right sides, and a front pivot shaft
that projects from said left and right sides of said lower front
portion; a pair of leg members, each of which is coupled pivotally
to said front pivot shaft adjacent to a respective one of said left
and right sides of said lower front portion, and is capable of
forward and rearward swinging movement about said front pivot
shaft; a pair of foot members; a pair of link mechanisms, each of
which is disposed in a respective one of said leg members and
couples pivotally the respective one of said leg members to a
respective one of said foot members such that the respective one of
said leg members is capable of limited forward and rearward
pivoting movement relative to the respective one of said foot
members; and a pair of wheel mechanisms, each of which is mounted
in a respective one of said foot members and includes a plurality
of rollers adapted to be placed in rolling contact with a surface,
and a drive unit adapted to drive the respective one of said foot
members to translate on the surface.
2. The dynamic skater toy of claim 1, wherein said trunk member
further has a lower rear portion with left and right sides, and a
support shaft that projects from said left and right sides of said
lower rear portion, each of said link mechanisms including a pivot
seat that has an upper end coupled to the respective one of said
leg members, and a lower end coupled to the respective one of said
foot members, each of said link mechanisms further including a link
shaft that has an upper end coupled pivotally to said support
shaft, and a lower end coupled pivotally to said pivot seat.
3. The dynamic skater toy of claim 2, wherein said pivot seat
includes an upper seat body coupled pivotally to the respective one
of said leg members, and a lower rotary block connected to the
respective one of said foot members, said lower rotary block being
coupled rotatably to said upper seat body such that the respective
one of said foot members is rotatable relative to the respective
one said leg members about a vertical axis.
4. The dynamic skater toy of claim 1, wherein said trunk member
includes a balancing shaft having an axially rotatable upright
portion with left and right sides, and a pair of horizontal
portions that project respectively from said left and right sides
of said balancing shaft, each of said leg members being further
coupled pivotally to a respective one of said horizontal
portions.
5. The dynamic skater toy of claim 1, further comprising a pair of
arm members, each of which is coupled pivotally to said trunk
member and is connected to a respective one of said leg members for
synchronized movement therewith.
6. The dynamic skater toy of claim 1, wherein each of said wheel
mechanisms further includes a housing formed with a plurality of
sets of vertically extending axle slots for rotatably supporting
said rollers.
7. The dynamic skater toy of claim 1, further comprising a control
mechanism that includes a circuit board mounted in said trunk
member and connected electrically to said drive units of said wheel
mechanisms, and a controller associated with said circuit board and
operable so as to transmit control signals received by said circuit
board for independent control of operations of said drive units of
said wheel mechanisms.
8. The dynamic skater toy of claim 1, wherein said trunk member
includes a housing with a trunk housing part and a head housing
coupled rotatably to said trunk housing part, said dynamic skater
toy further comprising a head drive mechanism that includes a first
gear unit connected to said head housing part, a second gear unit
connected to one of said leg members for rotation therewith when
said one of said leg members swings forward and rearward about said
front pivot shaft, and a third gear unit that is mounted rotatably
in said trunk housing part and that meshes with said first and
second gear units such that rotation of said second gear unit
results in turning movement of said head housing part relative to
said trunk housing part.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The invention relates to a dynamic toy, more particularly to
one that is capable of lifelike simulation of the movements of a
roller skater.
[0003] 2. Description of the Related Art
[0004] Toys can be generally classified as static toys or dynamic
toys. Appearance is a primary design consideration for static toys.
On the other hand, aside from considering their appearance, as to
how movement of an animal or object can be simulated in order to
achieve an amusement effect is also a primary design consideration
for dynamic toys. FIG. 1 illustrates a conventional dynamic toy 1
that is capable of simulating forward, rearward and spinning
movement of a roller skater. However, the lifelike simulation that
can be achieved by the conventional dynamic toy 1 is not
satisfactory because the parts thereof that correspond to different
joints of the human body are immobile.
SUMMARY OF THE INVENTION
[0005] Therefore, the object of the present invention is to provide
a dynamic toy that is capable of lifelike simulation of the
movements of a roller skater.
[0006] According to this invention, a dynamic skater toy
comprises:
[0007] a trunk member having a lower front portion with left and
right sides, and a front pivot shaft that projects from the left
and right sides of the lower front portion;
[0008] a pair of leg members, each of which is coupled pivotally to
the front pivot shaft adjacent to a respective one of the left and
right sides of the lower front portion, and is capable of forward
and rearward swinging movement about the front pivot shaft;
[0009] a pair of foot members;
[0010] a pair of link mechanisms, each of which is disposed in a
respective one of the leg members and couples pivotally the
respective one of the leg members to a respective one of the foot
members such that the respective one of the leg members is capable
of limited forward and rearward pivoting movement relative to the
respective one of the foot members; and
[0011] a pair of wheel mechanisms, each of which is mounted in a
respective one of the foot members and includes a plurality of
rollers adapted to be placed in rolling contact with a surface, and
a drive unit adapted to drive the respective one of the foot
members to translate on the surface.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Other features and advantages of the present invention will
become apparent in the following detailed description of the
preferred embodiments with reference to the accompanying drawings,
of which:
[0013] FIG. 1 is a perspective view of a conventional dynamic
skater toy;
[0014] FIG. 2 is a partly exploded perspective view showing the
first preferred embodiment of a dynamic skater toy according to
this invention;
[0015] FIG. 3 is a fragmentary schematic partly sectional side view
of the first preferred embodiment, illustrating a wheel mechanism
thereof in a forward driving mode;
[0016] FIG. 4 is a fragmentary schematic rear view of the first
preferred embodiment;
[0017] FIG. 5 is a fragmentary schematic partly sectional side view
of the first preferred embodiment, illustrating the wheel mechanism
in a reverse driving mode;
[0018] FIG. 6 is a fragmentary schematic partly sectional side view
of the first preferred embodiment, illustrating downward pivoting
movement of an arm member thereof;
[0019] FIG. 7 is a fragmentary schematic partly sectional side view
of the first preferred embodiment, illustrating upward pivoting
movement of the arm member;
[0020] FIG. 8 is a fragmentary schematic view of the second
preferred embodiment of a dynamic skater toy according to this
invention; and
[0021] FIG. 9 is another fragmentary schematic view to illustrate a
head drive mechanism of the second preferred embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0022] Before the present invention is described in greater detail,
it should be noted that like elements are denoted by the same
reference numerals throughout the disclosure.
[0023] Referring to FIGS. 2 and 3, the preferred embodiment of a
dynamic skater toy according to the present invention is adapted to
simulate the movements of a roller skater, and is shown to comprise
a trunk member 2, a control mechanism 3, a pair of leg members 4, a
pair of foot members 5, a pair of arm members 6, a pair of link
mechanisms 7, and a pair of wheel mechanisms 8.
[0024] The trunk member 2 includes a trunk frame 20. A front pivot
shaft 21 projects from left and right sides of a lower front
portion of the trunk frame 20. A support shaft 22 projects from
left and right sides of a lower rear portion of the trunk frame 20.
An upper pivot shaft 23 projects from left and right sides of an
upper portion of the trunk frame 20. The trunk frame 20 has an
intermediate portion formed with an upright mounting cavity 26.
Across-shaped balancing shaft 24 is disposed in the mounting cavity
26. The balancing shaft 24 includes an axially rotatable upright
portion 241 that is rotatably retained in the mounting cavity 26,
and a pair of horizontal portions 242 that project respectively
from left and right sides of the upright portion 241. The
horizontal portions 242 are thus rotatable relative to the trunk
frame 20 about an axis of the upright portion 241. The trunk member
2 further includes a housing 25 to conceal the trunk frame 20
therein.
[0025] The control mechanism 3 includes a circuit board 31 mounted
on the trunk frame 20 of the trunk member 2, and a controller 32
associated with the circuit board 31 and operable so as to transmit
control signals to be received by the circuit board 31. The circuit
board 31 is provided with a control switch (not shown) to control
supply of electric power thereto in a known manner. In this
embodiment, the controller 32 is capable of establishing wireless
communication with the circuit board 31, such as via conventional
radio frequency or infrared transmission means, so as to transmit
the control signals thereto.
[0026] With further reference to FIG. 4, each of the leg members 4
is coupled pivotally to the front pivot shaft 21 adjacent to a
respective one of the left and right sides of the trunk frame 20.
Each of the leg members 4 is thus capable of forward and rearward
swinging movement about the front pivot shaft 21. Each of the leg
members 4 includes complementary first and second housing parts 41,
42, and a coupling plate 43 that extends upwardly from the first
housing part 41. The first and second housing parts 41, 42
cooperate to confine a compartment 44 therein. The first housing
part 41 has an upper rear portion formed with a vertically
extending limiting slot 411 that permits the support shaft 22 of
the trunk frame 20 to extend into the compartment 44. The second
housing part 42 is formed with a battery chamber 421 for receiving
a battery cell therein. The coupling plate 43 has an intermediate
portion formed with a balancing hole 431 that permits one of the
horizontal portions 242 of the balancing shaft 24 to extend
thereinto. The coupling plate 43 further has an upper portion
formed with a coupling pin 432 that extends toward the trunk frame
20. Due to the engagement between the balancing shaft 24 and the
coupling plates 43 of the leg members 4, stability during movement
of the dynamic skater toy can be enhanced.
[0027] Each of the foot members 5 is disposed at a bottom end of a
respective one of the leg members 4. Each of the foot members 5
includes complementary third and fourth housing parts 51, 52 (see
FIG. 2) that cooperate to confine a foot compartment 53 (see FIG.
5) therein.
[0028] Each of the arm members 6 is pivoted on the upper pivot
shaft 23 adjacent to a respective one of the left and right sides
of the trunk frame 20. Each of the arm members 6 includes an arm
body 61, which simulates a human arm, a coupling sleeve 62 that
extends from the arm body 61 to couple pivotally with the upper
pivot shaft 23, and a pivot link 63 disposed on the coupling sleeve
62 and capable of pivoting forwardly and rearwardly together with
the arm body 61 about an axis of the coupling sleeve 62. The pivot
link 63 has a distal portion remote from the coupling sleeve 62 and
formed with a slide slot 631 for engaging the coupling pin 432 on
the coupling plate 43 of a respective one of the leg members 4. As
such, synchronized movements of the arm and leg members 6, 4
relative to the trunk frame 20 are thus possible in view of the
connection between each arm member 6 and the respective leg member
4.
[0029] Each of the link mechanisms 7 is disposed in the compartment
44 of a respective one of the leg members 4, and includes a link
shaft 71 and a pivot seat 72 having an upper end coupled to the
respective leg member 4 and a lower end coupled to a respective one
of the foot members 5. The link shaft 71 has an upper end 711 and a
lower end 712. The pivot seat 72 includes an upper seat body 721, a
coupling shaft 725 extending downwardly from the seat body 721, a
lower rotary block 722 coupled rotatably to the coupling shaft 725,
and front and rear pivot members 723, 724 that project upwardly
from front and rear ends of the seat body 721.
[0030] The link mechanisms 7 couple pivotally the respective leg
member 4 to the respective foot member 5 such that the former is
capable of limited forward and rearward pivoting movement relative
to the latter. To this end, the opposite ends of the support shaft
22 extend respectively into the compartments 44 of the leg members
4 via the limiting slots 411, and the upper end 711 of the link
shaft 71 of each link mechanism 7 is connected pivotally to the
support shaft 22. The lower end 712 of the link shaft 71 of each
link mechanism 7 is connected pivotally to the rear pivot member
724 of the pivot seat 72. The front pivot member 723 of the pivot
seat 72 is connected pivotally to the first and second housing
parts 41, 42 of the respective leg member 4.
[0031] With further reference to FIG. 5, each of the wheel
mechanisms 8 is mounted in the foot compartment 53 of a respective
one of the foot members 5, and includes complementary fifth and
sixth housing parts 81, 82 (see FIG. 4) having three in-line
rollers 84 disposed rotatably therein. The fifth and sixth housing
parts 81, 82 are formed with three sets of vertically extending
axle slots 85 for rotatably supporting the rollers 84. The elongate
design of the axle slots 85 results in a lower precision
requirement during fabrication for ensuring that all of the rollers
84 can be steadily placed for rolling contact with a surface. The
fifth and sixth housing parts 81, 82 have top ends formed with a
lock unit 87 for locking engagement with the rotary block 722 of
the pivot seat 72 of a respective one of the link mechanisms 7. As
such, each of the foot members 5 is rotatable together with the
respective wheel mechanism 8 relative to the respective leg member
4 and about the coupling shaft 725 of the pivot seat 72 of the
respective link mechanism 7.
[0032] Each of the wheel mechanisms 8 further includes a drive unit
86 that includes a source 861 of drive power, a speed-reduction
gearing 862 driven by the source 861, a clutch unit 863 driven by
the gearing 862, a drive gear 864 driven by the clutch unit 863,
and a surface translating wheel 865 driven by the drive gear 864.
The source 861 is a bi-directional motor that is connected to the
battery chamber 421 of a respective leg member 4 and that is
further connected to the circuit board 31. The gearing 862 is in
the form of a known arrangement of large and small-sized gears. The
clutch unit 863 includes a large gear 8630 meshing with the gearing
862, a sun gear 8631 co-rotating with the large gear 8630, a rotary
gear carrier 8632 disposed between the large gear 8630 and the sun
gear 8631, and a planet gear 8633 mounted rotatably on the gear
carrier 8632 and meshing with the sun gear 8631. The gear carrier
8632 is formed with a limiting flange 8634. The drive gear 864 is
driven by the planet gear 8633. The surface translating wheel 865
is disposed at the same level as the rollers 84 and is provided
with a rubber friction lining 866 for enhanced traction.
[0033] Since the particular configuration of the drive unit 86 is
not pertinent to the claimed invention, a detailed description of
the same will be omitted herein for the sake of brevity.
[0034] During forward driving action of the drive unit 86, the
limiting flange 8634 abuts against a top side of a top wall of the
housing of the wheel mechanism 8. The planet gear 8633 meshes with
both the sun gear 8631 and the drive gear 864 such that the surface
translating wheel 865 is driven to rotate in a positive direction,
as best shown in FIG. 3. During reverse driving action of the drive
unit 86, the limiting flange 8634 is moved anti-clockwise from the
position shown in FIG. 3 to that shown in FIG. 5, where the
limiting flange 8634 abuts against a bottom side of the top wall of
the housing of the wheel mechanism 8. At this time, the planet gear
8633 meshes with both the sun gear 8631 and the drive gear 864 such
that the surface translating wheel 865 is driven to rotate in a
negative direction. Note that the planet gear 8633 is disengaged
from the drive gear 864 during movement of the limiting flange 8634
from the position shown in FIG. 3 to that shown in FIG. 5, or vice
versa. As such, both the drive gear 864 and the surface translating
wheel 865 are allowed to decelerate before a change in the surface
translating direction to avoid toppling of the dynamic skater
toy.
[0035] When the user operates the controller 32 so as to control
forward driving action of the drive unit 86 of one of the wheel
mechanisms 8 to cause the corresponding leg member 4 to pivot
forwardly about the front pivot shaft 21 (see FIG. 6), the
corresponding arm member 6 will be urged to pivot upwardly about
the upper pivot shaft 23 by the coupling pin 432. At the same time,
the other leg member 4 will be disposed behind and thus pivots
rearwardly about the front pivot shaft 21 (see FIG. 7) such that
the other arm member 6 will be allowed to pivot downwardly about
the upper pivot shaft 23 by the coupling pin 432 of the other leg
member 4. By performing alternating control of the forward driving
actions of the drive units 86 of the wheel mechanisms 8, lifelike
simulation of the forward movement of a roller skater can be
achieved. It should be noted that the drive units 86 of the wheel
mechanisms 8 are also capable of being controlled to perform
forward or reverse driving action simultaneously. In addition, when
one of the drive units 86 is controlled to perform a forward
driving action, whereas the other of the drive units 86 is
controlled to perform a reverse driving action, the dynamic skater
toy will simulate a spinning movement of a roller skater.
[0036] Referring to FIGS. 8 and 9, in order to further enhance
lifelike movement of the dynamic skater toy of this invention, the
housing 25 of the trunk member 2 can include a trunk housing part
251 and a head housing part 252 coupled rotatably to the trunk
housing part 251. The dynamic skater toy further comprises a head
drive mechanism 9 that includes a first gear unit 91 connected to
the head housing part 252, a second gear unit 92 connected to the
pivot link 63 of one of the arm members 6, and a third gear unit 93
that is mounted rotatably in the trunk housing part 251 and that
meshes with the first and second gear units 91, 92. Since the pivot
link 63 is connected to one of the leg members 4, and since the
second gear unit 92 rotates with the pivot link 63, forward and
rearward movement of said one of the leg members 4 results in left
and right turning movement of the head housing part 252 relative to
the trunk housing part 251.
[0037] While the present invention has been described in connection
with what is considered the most practical and preferred
embodiments, it is understood that this invention is not limited to
the disclosed embodiments but is intended to cover various
arrangements included within the spirit and scope of the broadest
interpretation so as to encompass all such modifications and
equivalent arrangements.
* * * * *