Graco swing circuit board

Graco swing circuit board DEFAULT

Hi all- new here, a little help

Hi guys (and gals?). My name is Nick, and I'm a mechanic with a hobbiest interest in electronics. Unfortunately, my knowledge is not terribly advanced in contrast to what I expect I'll find here, which is my reason for signing up. The project I have right now is one you'll all probably get a chuckle out of, and most people would suggest simply replacing the broken unit, I think. But I don't like not being able to solve problems, which sometimes means enlisting the help of more knowledgeable folks. Ask me to find the problem with your car, I will. But we don't typically repair the internals of control modules on them, just replace the units. So logic circuits I'm still learning.

Anyway, my query. The item in question is a baby swing, fisher-price nature's touch model (6v DC). I have been unable to turn up a schematic, not even with a call to Mattel's tech service department. So I was left trying to figure out the problem for myself. I'm sure for some of you, this is very elementary, but I'm kinda lost. Problem started when batteries were installed backwards. The sound functions still work, as does the simple mobile motor circuit (just an on/off) The issue is with the swing. It uses a small DC brush motor, but instead of being controlled with a potentiometer, it uses a logic circuit with a couple dozen resistors, 8 capacitors, 3 large and 4 small 3-node transistors (both NPN and PNP), one diode, a small calibrating potentiometer, what appears to be a and one LMN quad op Amplifier. The issue is that, when turned on and with the motor load, it has voltage only briefly, which then tapers off to nothing. At first, I traced that back to one of the resistors. It had v in and no out. So I simply bridged it. Well, then the drop happened at the next resistor back in the line. So I bridged it too. Same thing. I got all the way back to the amplifier, which will lose voltage at the 8, 9 and 10 terminals when the two resistors are bypassed. I figured the amplifier was dropping because of heat caused by some internal damage with the inverse voltage, so I replaced it. Same thing still happens.

I suppose my biggest question would be what component was most likely damaged by the voltage inversion? I know this is even more difficult without looking at a schematic or the physical unit, but figured it was worth a shot. I've exhausted my diagnostic capabilities but would rather learn something than do the logical thing and simply throw it away.

Here are a few images of the PCB's. For the insulated wires, the distribution is as follows:

Black-ground
Red-6v+
Blue and white-Mobile motor
Orange (2)-Speaker
Green-Swing motor ground
Yellow-Swing motor power

Since three of the text boxes of the first image came out fuzzy, they simply indicate wires (purple) for the auxiliary position on the swing switch, which allows mobile and sound without swing motion, one pointing to a component that I'm not sure if it's a resistor of sorts or a small transformer coil (It is tiny copper wire wound around an insulator), and one indicating the volume potentiometer at the bottom center.

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In the following image, I've attached arrows and numbers to show where the voltage drop happens. The circuit goes straight to the swing motor from point 1. At point 1, the initial drop happens. It'll be v on the in side, and drop to 0 on the out. If I bridge that resistor, the voltage will drop to zero at point 2. If I bridge the resistor at point 2, voltage will drop at the three point indicated by #3. I never lose ground or 6v at VCC input, or the other inputs and outputs at the amplifier.

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Thanks in advance for your help!
Last edited:
Sours: https://www.electro-tech-online.com/threads/hi-all-new-here-a-little-help/

free shipping! Graco DuetSoothe Swing & Rocker - Kendra: Toys & Games new exclusive high-end

The best moments in the day are the ones spent with baby, so make the most of precious time with ’s DuetSoothe™ Swing + Rocker. This ingenious swing has a seat that doubles as a rocker, giving you the flexibility to move around the house while keeping baby cozy and close-by. In swing mode, three seating positions give baby the option to sway side-to-side or swing back-and-forth – whatever he prefers! With added features such as a plug, vibration, and music, the DuetSoothe™ Swing + Rocker has all the options baby will love. Removable swing seat doubles as a rocker 3 seating positions so baby can sway side-to-side or swing front-to-back Rocker carry-handle allows you to keep baby by your side Option to plug-in or use batteries Vibration with two speed settings keeps baby relaxed Roomy seat with body support and recline for baby comfort 6 swinging speeds allow you to find the right pace 10 melodies and 5 nature sounds will delight and amuse Mobile with three soft toys keeps baby entertained 5 point harness keeps your child secure Specifications: Weight: approximately 21 lbs Overall Swing Height: 43" Side to Side: 34" Front to back: 33" Recommended Use: Swing: For babies from to 30 lbs. Rocker: For babies from to 25 lbs.

Sours: https://www.seahorsesailingschool.com/photo-contests/professional-photo-contests.php?formattingd62/baccffhtm
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USB2 - Swing control device for a swing chair - Google Patents

Swing control device for a swing chair Download PDF

Info

Publication number
USB2
USB2US09/,USAUSB2US B2US B2US B2US AUS AUS AUS B2US B2US B2
Authority
US
United States
Prior art keywords
linkage
axle
swing
recoil
motor
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Legal status (The legal status 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 status listed.)
Expired - Fee Related, expires
Application number
US09/,
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USA1 (en
Inventor
Sung-Tsun Wu
Original Assignee
Sung-Tsun Wu
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Filing date
Publication date
Application filed by Sung-Tsun WufiledCriticalSung-Tsun Wu
Priority to US09/,priorityCriticalpatent/USB2/en
Publication of USA1publicationCriticalpatent/USA1/en
Application grantedgrantedCritical
Publication of USB2publicationCriticalpatent/USB2/en
Expired - Fee Relatedlegal-statusCriticalCurrent
Adjusted expirationlegal-statusCritical

Links

  • biological transmissionEffectsdescription5
  • diagramMethodsdescription1

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
    • A47D13/00—Other nursery furniture
    • A47D13/10—Rocking-chairs ; Indoor swings ; Baby bouncers
    • A47D13/—Rocking-chairs ; Indoor swings ; Baby bouncers pivotally mounted in a frame

Abstract

Description

The present invention relates to a swing control device for a swing chair, and more particularly to a swing control device for a swing chair to control the swing amplitude of the swing chair to a desired degree.

The prior art of a swing chair is disclosed and has a motor to drive a worm gear with an eccentric pin that is received in a hollow member to drive an axle. The swing chair further has a linkage with a slot defined to receive the axle therein and a recoil element with which a recoil force is provided to the axel in such a way that after the axle is rotated in a first direction, the recoil force from the recoil element is able to rotate the axle in a second direction opposite to the first direction. Within this swing chair, the amplitude of the swing chair is fixed. That is, even though there are pushbuttons provided on the panel of the swing chair to change the amplitude, the amplitudes are still fixed. Therefore, when the worm gear is generally worn out and thus the amplitude can not reach the predetermined degree, the swing chair will no longer accomplish the desired goal.

To overcome the shortcomings, the present invention intends to provide an improved swing chair having a swing control device to offset the deficiency in amplitude so as to mitigate or obviate the aforementioned problems.

The primary objective of the invention is to provide a swing control device for a swing chair to offset the deficiency in amplitude.

Another objective of the invention is to provide a speaker in the swing chair in order to provide music while the swing chair is used.

Still another objective of the invention is to provide an extension formed on the spindle of the motor to engage with a side face of the housing of the swing control device to prevent loose contact with the worm gear.

Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

FIG. 1 is a perspective view of the swing chair of the invention.

FIG. 2 shows the housing of the swing control device in accordance with the present invention.

FIG. 3 is an exploded perspective view of the swing control device with two halves of the housing.

FIG. 4 is a partial exploded perspective view of the assembled transmission mechanism of the swing chair.

FIG. 5 is a schematic side plan view of the assembled transmission mechanism, wherein an extension of the motor is shown to engage with a side wall of the second half.

With reference to FIGS. 1 and 2, the swing control device in accordance with the present invention has a housing 1 composed of a first half 11 with multiple bores defined to receive therein pushbuttons that are mounted on a top face of the first half 11 and a second half 12 together with the first half 11 to define a space for receiving therein the swing control device of the invention.

The transmission mechanism of the swing chair has a motor 21 with an extension integrally formed on the threaded spindle of the motor 21, a worm gear 22 matingly engaged with the threaded spindle of the motor 21 and having an eccentric pin , a linkage 23 pivotally clamped between the first and second halves 11,12 of the housing 1 and having a slot defined to receive the eccentric pin therethrough, a battery compartment 24 in the second half 12 for receiving therein batteries to provide electric power to the motor 21, a first bearing 25 provided to the linkage 23 to smoothen the pivotal movement of the linkage 23, a recoil element 26, preferably a coil spring, one end of which is securely connected to a cover to provide a recoil force to the linkage 23, an axle 27 extending through the recoil element 26 and engaged with the linkage 23, a second bearing provided to the axle 27 to provide smoothness to the pivotal movement of the axle 27, an enclosure 28 provided to receive the second bearing , the axle 27, the recoil element 26 and the cover therein and a cap 29 mounted on an outside of the enclosure 28 to limit the extension of the axle 27.

Because how the transmission mechanism works is not the focus of the invention and has been specifically disclosed in the abovesaid prior art, the operation of how the transmission mechanism works is thus omitted from the following description.

As previously described, the housing 1 has multiple pushbuttons operatably connected with a circuit board 31 to control the swing amplitude of the swing chair. From the structure described in the abovesaid prior art, the swing amplitude is determined by the length of the slot in the linkage 23. When the worm gear 22 is generally worn out due to long use, a sensing element 32 is provided on the enclosure 28 and has boles defined therein to monitor the amplitude of the linkage 23. That is, when the linkage 23 rotates, the linkage 23 blocks some of the holes . When a number of holes are blocked by the linkage 23, a signal will be received by a sensor 33 connected with the batteries and then sent out to the circuit board 31 to match with the predetermined amplitude. If the amplitude detected by the sensor 33 does not match with the predetermined amplitude, the circuit board 31 will then automatically correct the error and then increase/decrease the rotation of the motor 21 to force the linkage 23 to increase/decrease its swing amplitude.

Because the circuit for monitoring and receiving/sending out a signal is well known in the art, detailed circuit diagram is omitted from the description. However, this correction structure used in the swing chair is novel and unique over the existing art.

Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Claims (3)

1.

a swing control device having a sensing element mounted on the enclosure and having holes so defined that the rotation of the linkage blocks some of the holes, a sensor sensing the number of blocked holes and sending a signal to a circuit board to match with a predetermined number in the circuit board and then sending out a correction signal to the linkage to adjust the amplitude of the pivotal movement of the linkage.

2. The swing control device as claimed in , wherein a speaker is provided to provide music when the swing chair is in use.

3. A swing control device for a swing chair comprising:

a motor with a threaded spindle and an extension integrally formed with the threaded spindle, wherein the extension is so configured that the extension engages with a side face of the swing chair;

a worm gear matingly engaged with the threaded spindle of the motor and having an eccentric pin;

a linkage pivotally clamped between first and second halves of a housing and having a slot defined to receive the eccentric pin therethrough;

a battery compartment in the second half of the housing for receiving therein batteries to provide electric power to the motor;

a first bearing provided to the linkage to smoothen the pivotal movement of the linkage;

a recoil element one end of which is securely connected to a cover to provide a recoil force to the linkage;

an axle extending through the recoil element and engaging with the linkage;

a second bearing provided to the axle to provide smoothness to the pivotal movement of the axle;

an enclosure provided to receive the second bearing, the axle, the recoil element and the cover therein;

a cap mounted on an outside of the enclosure to limit the extension of the axle;

a sensing element mounted on the enclosure and having holes so defined that the rotation of the linkage blocks some of the holes;

a sensor sensing the number of blocked holes and sending a signal to a circuit board to match with a predetermined number in the circuit board and then sending out a correction signal to the linkage to adjust the amplitude of the pivotal movement of the linkage,

wherein a loose contact between the worm gear and the threaded spindle is avoided by the engagement of the extension with the side face of the swing chair.

US09/,Swing control device for a swing chair Expired - Fee RelatedUSB2 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
US09/,USB2 (en) Swing control device for a swing chair

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
US09/,USB2 (en) Swing control device for a swing chair

Publications (2)

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Family Applications (1)

Application NumberTitlePriority DateFiling Date
US09/,Expired - Fee RelatedUSB2 (en) Swing control device for a swing chair

Country Status (1)

Cited By (18)

Publication numberPriority datePublication dateAssigneeTitle
USA1 (en) *Keska Tdeusz WMotorized drive for juvenile swing
USA1 (en) *Graco Children's Products Inc.Motor Drive Feedback Control for a Child Motion Device
USA1 (en) *Excellerate Enterprise Co., Ltd.Oscillating device for children's swing apparatus
USA1 (en) *Feng Pei Guang Control device for a swing
USA1 (en) *Graco Children's Products Inc.Child Motion Device
USA1 (en) *Sims Jr Dewey MInfant seat rocker
USA1 (en) *Sims Jr Dewey MInfant seat rocker
USA1 (en) *Kids Ii, Inc.Electromagnetic Swing
USA1 (en) *Graco Children's Products Inc.Child Motion Device
USB2 (en) Kolcraft Enterprises, Inc.Child swing and jumper apparatus and methods of operating the same
CNA (en) *中山市隆成日用制品有限公司Swing control device and method for baby products
USA1 (en) *Mattel, Inc.Infant swing and glider device
USB2 (en) Kolcraft Enterprises, Inc.Child swing and jumper apparatus and methods of operating the same
CNA (en) *中山市盈创电子科技有限公司Driving device of electric cradle
USB2 (en) Taylor Made Golf Company, Inc.Golf club head
USB2 (en) Mattel, Inc.Control system for a child swing
USB2 (en) Kids Ii, Inc.Collapsible swing frame
USB2 (en) Kids Ii, Inc.Control device for a children's bouncer and infant support

Families Citing this family (1)

Publication numberPriority datePublication dateAssigneeTitle
CNA (en) *郑运婷Swing

Citations (9)

Publication numberPriority datePublication dateAssigneeTitle
USA (en) *Chang; Nai-WenGarage door position indicator
USA (en) *Cosco, Inc.Automatic pendulum-drive system
USA (en) *Evenflo Company, Inc.Swing with drive mechanism
USA (en) *Cosco, Inc.Pendulum-driven child swing
USB1 (en) *Graco Children's Products Inc.Motor mechanism for child's swing
USB1 (en) *Graco Children's Products Inc.Swing control for altering power to drive motor after each swing cycle
USB1 (en) *Regalo International, LlcOpen top swing
USB1 (en) *Chih-Huang YangSwing device with an automatic driving unit
USB1 (en) *Ben M. HsiaSwing device with a driving unit

Patent Citations (9)

Publication numberPriority datePublication dateAssigneeTitle
USA (en) *Chang; Nai-WenGarage door position indicator
USB1 (en) *Graco Children's Products Inc.Motor mechanism for child's swing
USA (en) *Cosco, Inc.Automatic pendulum-drive system
USA (en) *Evenflo Company, Inc.Swing with drive mechanism
USB1 (en) *Graco Children's Products Inc.Swing control for altering power to drive motor after each swing cycle
USA (en) *Cosco, Inc.Pendulum-driven child swing
USB1 (en) *Regalo International, LlcOpen top swing
USB1 (en) *Chih-Huang YangSwing device with an automatic driving unit
USB1 (en) *Ben M. HsiaSwing device with a driving unit

Cited By (36)

Publication numberPriority datePublication dateAssigneeTitle
USB2 (en) Keska Tadeusz WMotorized drive for juvenile swing
USA1 (en) *Keska Tdeusz WMotorized drive for juvenile swing
USB2 (en) Kolcraft EnterprisesChild swing and jumper apparatus and methods of operating the same
USB2 (en) Kolcraft Enterprises, Inc.Child swing and jumper apparatus and methods of operating the same
USB2 (en) Kolcraft Enterprises, Inc.Child swing and jumper apparatus and methods of operating the same
USB2 (en) *Graco Children's Products Inc.Child motion device
USA1 (en) *Graco Children's Products Inc.Child Motion Device
USA1 (en) *Graco Children's Products Inc.Child Motion Device
USB2 (en) *Graco Children's Products Inc.Child motion device
USB2 (en) *Graco Children's Products Inc.Motor drive feedback control for a child motion device
USA1 (en) *Graco Children's Products Inc.Motor Drive Feedback Control for a Child Motion Device
USB2 (en) Kolcraft Enterprises, Inc.Child swing and jumper apparatus and methods of operating the same
USB2 (en) Kolcraft Enterprises, Inc.Child swing and jumper apparatus and methods of operating the same
USA1 (en) *Feng Pei Guang Control device for a swing
USB2 (en) Kids Ii, Inc.Control device for a swing
USB2 (en) *Excellerate Enterprise Co., Ltd.Oscillating device for children's swing apparatus
USA1 (en) *Excellerate Enterprise Co., Ltd.Oscillating device for children's swing apparatus
USB2 (en) Taylor Made Golf Company, Inc.Golf club head
USB2 (en) Sims Jr Dewey MInfant seat rocker
USA1 (en) *Sims Jr Dewey MInfant seat rocker
USB2 (en) Sims Jr Dewey MInfant seat rocker
USA1 (en) *Sims Jr Dewey MInfant seat rocker
USB2 (en) Kids Ii, Inc.Electromagnetic swing
USB2 (en) Kids Ii, Inc.Electromagnetic swing
USB2 (en) Kids Ii, Inc.Electromagnetic swing
USA1 (en) *Kids Ii, Inc.Electromagnetic Swing
USB2 (en) Kids Ii, Inc.Electromagnetic swing
CNB (en) *中山市隆成日用制品有限公司Swing control device and method for baby products
CNA (en) *中山市隆成日用制品有限公司Swing control device and method for baby products
USB2 (en) Mattel, Inc.Infant swing and glider device
USA1 (en) *Mattel, Inc.Infant swing and glider device
CNA (en) *中山市盈创电子科技有限公司Driving device of electric cradle
USB2 (en) Mattel, Inc.Control system for a child swing
USB1 (en) Mattel, Inc.Control system for a child swing
USB2 (en) Kids Ii, Inc.Control device for a children's bouncer and infant support
USB2 (en) Kids Ii, Inc.Collapsible swing frame

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Sours: https://patents.google.com/patent/USB2/en

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Board graco swing circuit

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Graco swing not working

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