U.S. patent application number 15/691814 was filed with the patent office on 2019-02-28 for electromagnetic swinging cradle.
The applicant listed for this patent is Way-Hong Chen. Invention is credited to Way-Hong Chen.
Application Number | 20190059610 15/691814 |
Document ID | / |
Family ID | 65436575 |
Filed Date | 2019-02-28 |
![](/patent/app/20190059610/US20190059610A1-20190228-D00000.png)
![](/patent/app/20190059610/US20190059610A1-20190228-D00001.png)
![](/patent/app/20190059610/US20190059610A1-20190228-D00002.png)
![](/patent/app/20190059610/US20190059610A1-20190228-D00003.png)
![](/patent/app/20190059610/US20190059610A1-20190228-D00004.png)
![](/patent/app/20190059610/US20190059610A1-20190228-D00005.png)
United States Patent
Application |
20190059610 |
Kind Code |
A1 |
Chen; Way-Hong |
February 28, 2019 |
Electromagnetic Swinging Cradle
Abstract
A cradle includes a base unit, a swinging unit mounted on the
base unit, a table board mounted on the swinging unit, and an
electromagnetic unit mounted between the base unit and the table
board. The electromagnetic unit includes a housing secured on the
base unit, an electromagnetic device mounted in the housing, a box
mounted on the table board and corresponding to the electromagnetic
device, and two magnet sets mounted in the box. Thus, the
electromagnetic device is started and produces a magnetism to repel
or attract the two magnet sets which drive the table board to swing
reciprocally.
Inventors: |
Chen; Way-Hong; (Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Chen; Way-Hong |
Taipei City |
|
TW |
|
|
Family ID: |
65436575 |
Appl. No.: |
15/691814 |
Filed: |
August 31, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47D 9/02 20130101 |
International
Class: |
A47D 9/02 20060101
A47D009/02 |
Claims
1. A cradle comprising: a base unit; a swinging unit mounted on the
base unit; a table board mounted on the swinging unit; and an
electromagnetic unit mounted between the base unit and the table
board; wherein: the base unit includes two stands and two side
support rods secured between the two stands; one of the two stands
is provided with a recessed portion; the swinging unit includes two
primary swinging brackets, four secondary swinging brackets, two
links and an enclosed bar; two of the four secondary swinging
brackets are pivotally connected with one of the two side support
rods and located beside the two stands, and the other two of the
four secondary swinging brackets are pivotally connected with the
other one of the two side support rods and located beside the two
stands; each of the two links is secured between two of the four
secondary swinging brackets; one of the two primary swinging
brackets is pivotally connected with two of the four secondary
swinging brackets and located beside one of the two stands, and the
other one of the two primary swinging brackets is pivotally
connected with the other two of the four secondary swinging
brackets and located beside the other one of the two stands; the
enclosed bar is mounted on the two primary swinging brackets; the
table board is mounted on and supported by the two primary swinging
brackets of the swinging unit; the electromagnetic unit includes a
housing secured on the recessed portion of the base unit, an
electromagnetic device mounted in the housing, a box mounted on the
table board and corresponding to the electromagnetic device, and
two magnet sets mounted in the box; the box has an interior
provided with two receiving chambers, and an opening defined
between the two receiving chambers; and the two magnet sets are
mounted in the two receiving chambers of the box.
2. The cradle of claim 1, wherein each of the two distal ends of
each of the two stands is provided with a castor.
3. The cradle of claim 1, wherein each of the two primary swinging
brackets is pivotally connected with a fastener which is pivotally
connected with and hooked on one of the four secondary swinging
brackets to restrict swinging of the two primary swinging brackets
and the four secondary swinging brackets.
4. The cradle of claim 1, wherein the housing of the
electromagnetic unit includes two shells juxtaposed to each other
and combined together.
5. The cradle of claim 1, wherein: each of the two magnet sets
includes two overlapping magnets. each of the two stands is
substantially inverted U-shaped and has two distal ends extending
downward; the recessed portion is located at a middle position of
an upper portion of the one of the two stands; the two side support
rods flank the recessed portion of the one of the two stands; the
two links are parallel with the two side support rods; each of the
two primary swinging brackets is substantially U-shaped and has two
distal ends extending upward; the enclosed bar is secured to the
two distal ends of each of the two primary swinging brackets; the
housing is disposed under the box; the box has an elongate shape
and is located beneath the table board; and the two receiving
chambers of the box are directed toward a direction the same as
that of the two side support rods.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates to a cradle and, more
particularly, to an electromagnetic swinging cradle for placing a
baby.
2. Description of the Related Art
[0002] The cradle is used to place a baby so that the baby can lie
and sleep in the cradle to facilitate the baby minder nursing the
baby. A conventional cradle comprises a motor which drives a
linkage to move reciprocally so as to swing the cradle. However,
the motor produces great noise during operation, thereby affecting
the baby's sleeping. In addition, the conventional cradle is
operated by a mechanic swinging action, so that the conventional
cradle cannot swing smoothly and stably. Further, the conventional
cradle has a complicated construction, thereby increasing the cost
of production.
BRIEF SUMMARY OF THE INVENTION
[0003] The primary objective of the present invention is to provide
a cradle that performs a swinging action reciprocally in an
electromagnetically actuating manner, thereby greatly reducing the
noise produced during operation.
[0004] In accordance with the present invention, there is provided
a cradle comprising a base unit, a swinging unit mounted on the
base unit, a table board mounted on the swinging unit, and an
electromagnetic unit mounted between the base unit and the table
board. The base unit includes two stands and two side support rods
secured between the two stands. One of the two stands is provided
with a recessed portion. The swinging unit includes two primary
swinging brackets, four secondary swinging brackets, two links and
an enclosed bar. Two of the four secondary swinging brackets are
pivotally connected with one of the two side support rods and
located beside the two stands, and the other two of the four
secondary swinging brackets are pivotally connected with the other
one of the two side support rods and located beside the two stands.
Each of the two links is secured between two of the four secondary
swinging brackets. One of the two primary swinging brackets is
pivotally connected with two of the four secondary swinging
brackets and located beside one of the two stands, and the other
one of the two primary swinging brackets is pivotally connected
with the other two of the four secondary swinging brackets and
located beside the other one of the two stands. The enclosed bar is
mounted on the two primary swinging brackets. The table board is
mounted on and supported by the two primary swinging brackets of
the swinging unit. The electromagnetic unit includes a housing
secured on the recessed portion of the base unit, an
electromagnetic device mounted in the housing, a box mounted on the
table board and corresponding to the electromagnetic device, and
two magnet sets mounted in the box. The box has an interior
provided with two receiving chambers, and an opening defined
between the two receiving chambers. The two magnet sets are mounted
in the two receiving chambers of the box.
[0005] Preferably, each of the two primary swinging brackets is
pivotally connected with a fastener which is pivotally connected
with and hooked on one of the four secondary swinging brackets to
restrict swinging of the two primary swinging brackets and the four
secondary swinging brackets.
[0006] Accordingly, after the electromagnetic device is started,
the electromagnetic device produces a magnetism to repel or attract
the two magnet sets, and the box drives and moves the table board
toward the direction the same as that of the two side support rods,
so that the table board is driven to swing reciprocally in an
electromagnetically actuating manner. Thus, the electromagnetic
device greatly reduces the noise produced during operation, to
overcome the drawbacks of the conventional motor which produces
great noise during operation. In addition, the table board swings
smoothly and stably in the electromagnetically actuating manner.
Further, the cradle has a simplified construction, thereby
enhancing the efficiency of assembly, facilitating maintenance and
decreasing the cost of production.
[0007] Further benefits and advantages of the present invention
will become apparent after a careful reading of the detailed
description with appropriate reference to the accompanying
drawings.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)
[0008] FIG. 1 is a perspective view of a cradle in accordance with
the preferred embodiment of the present invention.
[0009] FIG. 2 is an exploded perspective view of the cradle in
accordance with the preferred embodiment of the present
invention.
[0010] FIG. 3 is a partially exploded perspective view of the
cradle in accordance with the preferred embodiment of the present
invention.
[0011] FIG. 4 is a plane view of the cradle in accordance with the
preferred embodiment of the present invention.
[0012] FIG. 5 is a schematic operational view of the cradle as
shown in FIG. 4 in use.
DETAILED DESCRIPTION OF THE INVENTION
[0013] Referring to the drawings and initially to FIGS. 1-4, a
cradle in accordance with the preferred embodiment of the present
invention comprises a base unit 1, a swinging unit 2 mounted on the
base unit 1, a table board 3 mounted on the swinging unit 2, and an
electromagnetic unit 4 mounted between the base unit 1 and the
table board 3.
[0014] The base unit 1 includes two stands 11 and two side support
rods 13 secured between the two stands 11. Each of the two stands
11 is substantially inverted U-shaped and has two distal ends
extending downward. One of the two stands 11 is provided with a
recessed portion 12. The recessed portion 12 is located at a middle
position of an upper portion of the one of the two stands 11. The
two side support rods 13 flank the recessed portion 12 of the one
of the two stands 11.
[0015] The swinging unit 2 includes two primary swinging brackets
23, four secondary swinging brackets 21, two links 22 and an
enclosed bar 25. Two of the four secondary swinging brackets 21 are
pivotally connected with one of the two side support rods 13 and
located beside the two stands 11, and the other two of the four
secondary swinging brackets 21 are pivotally connected with the
other one of the two side support rods 13 and located beside the
two stands 11. Preferably, the upper end of each of the four
secondary swinging brackets 21 is pivotally mounted on the
respective side support rod 13. The two links 22 are parallel with
the two side support rods 13. Each of the two links 22 is secured
between two of the four secondary swinging brackets 21. Each of the
two primary swinging brackets 23 is substantially U-shaped and has
two distal ends extending upward. One of the two primary swinging
brackets 23 is pivotally connected with two of the four secondary
swinging brackets 21 and located beside one of the two stands 11,
and the other one of the two primary swinging brackets 23 is
pivotally connected with the other two of the four secondary
swinging brackets 21 and located beside the other one of the two
stands 11. Preferably, each of the two primary swinging brackets 23
has a lower portion pivotally connected with the lower end of the
respective secondary swinging brackets 21. The enclosed bar 25 is
mounted on the two primary swinging brackets 23 and is secured to
the two distal ends of each of the two primary swinging brackets
23.
[0016] The table board 3 is mounted on and supported by the two
primary swinging brackets 23 of the swinging unit 2.
[0017] The electromagnetic unit 4 includes a housing 41 secured on
the recessed portion 12 of the base unit 1, an electromagnetic
device 42 mounted in the housing 41, a box 43 mounted on the table
board 3 and corresponding to the electromagnetic device 42, and two
magnet sets 44 mounted in the box 43. The housing 41 is disposed
under the box 43, with a determined distance defined between the
housing 41 and the box 43. The box 43 has an elongate shape and is
located beneath the table board 3. The box 43 has an interior
provided with two receiving chambers 431, and an opening 432
defined between the two receiving chambers 431 to save the cost of
material. The two magnet sets 44 are mounted in the two receiving
chambers 431 of the box 43 and form a magnetic field by provision
of the opening 432. The two receiving chambers 431 of the box 43
are directed toward a direction the same as that of the two side
support rods 13, so that the two magnet sets 44 are also directed
toward the direction the same as that of the two side support rods
13. In practice, the electromagnetic device 42 produces a magnetism
to repel or attract the two magnet sets 44.
[0018] In the preferred embodiment of the present invention, each
of the two distal ends of each of the two stands 11 is provided
with a castor.
[0019] In the preferred embodiment of the present invention, each
of the two primary swinging brackets 23 is pivotally connected with
a fastener 24 which is pivotally connected with and hooked on one
of the four secondary swinging brackets 21 to restrict swinging of
the two primary swinging brackets 23 and the four secondary
swinging brackets 21.
[0020] In the preferred embodiment of the present invention, the
housing 41 of the electromagnetic unit 4 includes two shells
juxtaposed to each other and combined together.
[0021] In the preferred embodiment of the present invention, the
two magnet sets 44 have the same arrangement, that is, the two
magnet sets 44 have the same weight, size and number. Preferably,
each of the two magnet sets 44 includes two overlapping
magnets.
[0022] In operation, referring to FIGS. 4 and 5 with reference to
FIGS. 1-3, after the electromagnetic device 42 is started, the
electromagnetic device 42 produces a magnetism to repel or attract
the two magnet sets 44. At this time, the housing 41 is secured on
the recessed portion 12 of the base unit 1, so that the housing 41
is fixed and cannot be moved. In addition, the four secondary
swinging brackets 21 are pivotally connected with the two side
support rods 13, and the two primary swinging brackets 23 are
pivotally connected with the four secondary swinging brackets 21,
so that the two primary swinging brackets 23 and the four secondary
swinging brackets 21 are pivoted relative to the two side support
rods 13 and the two stands 11. In such a manner, after the table
board 3 is pushed and moved by an external force, the two primary
swinging brackets 23 are moved with the table board 3, so that the
two primary swinging brackets 23 and the four secondary swinging
brackets 21 are pivoted relative to the two side support rods 13.
If the electromagnetic device 42 produces a magnetism to repel the
two magnet sets 44, the two magnet sets 44 are repelled
successively by the magnetism of the electromagnetic device 42 to
drive and move the table board 3 toward the direction the same as
that of the two side support rods 13, so that the table board 3
swings reciprocally. If the electromagnetic device 42 produces a
magnetism to attract the two magnet sets 44, the two magnet sets 44
are attracted successively by the magnetism of the electromagnetic
device 42 to drive and move the table board 3 toward the direction
the same as that of the two side support rods 13, so that the table
board 3 swings reciprocally. Thus, the table board 3 is driven to
swing reciprocally in an electromagnetically actuating manner.
[0023] Accordingly, the cradle performs a swinging action
reciprocally in an electromagnetically actuating manner, thereby
greatly reducing the noise produced during operation. In addition,
the table board 3 swings smoothly and stably in the
electromagnetically actuating manner, thereby providing a
comfortable sensation to the baby placed in the cradle. Further,
the cradle has a simplified construction, thereby enhancing the
efficiency of assembly, facilitating maintenance and decreasing the
cost of production.
[0024] Although the invention has been explained in relation to its
preferred embodiment(s) as mentioned above, it is to be understood
that many other possible modifications and variations can be made
without departing from the scope of the present invention. It is,
therefore, contemplated that the appended claim or claims will
cover such modifications and variations that fall within the scope
of the invention.
* * * * *