CA1250738A - Method of assembling a motor-speed reducer to a device to be driven - Google Patents
Method of assembling a motor-speed reducer to a device to be drivenInfo
- Publication number
- CA1250738A CA1250738A CA000482681A CA482681A CA1250738A CA 1250738 A CA1250738 A CA 1250738A CA 000482681 A CA000482681 A CA 000482681A CA 482681 A CA482681 A CA 482681A CA 1250738 A CA1250738 A CA 1250738A
- Authority
- CA
- Canada
- Prior art keywords
- motor
- output shaft
- housing
- driven
- electrical
- Prior art date
- 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
Links
Landscapes
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
- General Details Of Gearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A plug-in power transmission assembly having a housing with a gear train and with a motor mounted on one side and the output drive shaft extending from the opposite side. The motor has connectors thereon which are received through guides on the housing and extend outwardly in a common direction with the output shaft axis. Releasable fastening means are provided on the output shaft side of the housing. The assembly, as a unit is plugged into a device to be driven and the output shaft, electrical connectors and fastening means are simultaneously engaged.
Description
'738 The present invention relates to a method of assembling a motor drive, and more particularly to assembling motorized drives Eor timing control devices, such as those relating to timer/controllers employing small subEractional horse power timing motors.
Small synchronous timing motors are typically used with a speed reducer for driving timer/controllers or programmer timers as they are sometimes referred to, employed for service cycle control of domestic appliances such as clothes dryers, washing machines and microwave cooking ovens.
In the design of appliances of the aforesaid type employing a timing motor and speed reducer, the motor and speed reducer subassembly drivingly engages a series of cam wheels for sequentially actuating and deactuating electrical switches for controlling various appliance electrical Eunctions.
In known programmer timers for appliances, heretofore it has been the practice to provide a suitable common housing or casing for the cam actuating mechanism and switches and to attach the separate motor and speed reducer thereto with suitable fastening techniques. Typically, the speed reducer mechanism is assembled onto the switch housing and the motor is then fastened thereto. In such known programmer timers, the switches and can mechanism are usually assembled onto the opposite side of the housing and suitable electrical terminals for the switches provided for connecting the motor leads and switches thereto.
This type of programmer timer assembling arrangement has required numerous positioning and assembly operations which have proven to be costly in high volume manufacturing.
It has, there-Eore, long been desired to provide a technique for assembling a motor and speed reducer to a cam actuated switch programmer in a manner which permits rapid and inexpensive modular assembly during manufacturing.
According to one aspect of the present invention there is provided a method of assembling a motor gear drive with device lZS~73~3 to be driven, the method including the steps of providing a gear box with an electrical terminal guide means and having a power output shaft extending from one side thereof and a power input shaft connec-tion provided on the opposite side thereof, and providing a motor having a motor shaft extending therefrom and a pair of electrical terminals extending therefrom in the direction of the motor shaft. The method further includes the steps of inserting the motor shaft into the gear box and engaging -the motor shaft with the power input connection and inserting the electrical terminals in the direction of the motor shaft into the guide means all in a common direction, and inserting -the power output shaft into engagement with a device to be driven and simultaneously in a common direction therewith, inserting the terminals into electrical power source connection of the device.
According to another aspect of the invention there is provided a method of assembling a motor drive including the steps of providing a motor speed reducer in a housing with an output shaft engageable from one side thereof and extending electrical connector means in the direction of the power shaft from the one side of the housing. The method further includes the steps of extending releasable fastening means from the housing means on one side and inserting substantially simultaneously, in the direction of the output shaft, the output shaft, the connector means and the fastener means into a drive to be driven and operatively engaging each of the means with the device for transmitting electrical power to the motor means and mechanical power to the device and securing the motor speed reducer to the device.
Brief Description of the Drawings Figure 1 is a side view in elevation of the power transmission module of the present invention shown installed on a device to be driven portions of which are broken away for clarity;
Figure 2 is a bottom view of -the module of Figure 1 with the device to be driven omitted for clarity; and, 3~3 Figure 3 is a section view taken along section indicat-ing lines 3-3 of figure 2.
Detailed Description Referring now to Figures 1 and 2, the power transmis-sion module is indicated generally at 10 with a motor 12 preferably of the synchronous permanent magnet type having a mounting flange 14. The motor is received on a gear case or housing 16 with the motor output shaft 18 received in the gear case in mechanical engagement with the input gear (not shown) thereof. The motor flange 14 is retained against the gear case by a suitable fastening expedient as, for example, heat deformed plastic rivets 20 received through the flange 14.
The side 22 of the gear case opposite the motor has extending therefrom an output pinion 24 for driving engagement with the device to be driven, indicated `:
~25r~?7~3 generally at 30, which has a surface 26 upon which the gear case surface 22 is mounted in contact therewith.
The gear case 16 has a terminal guide lug 28 extending therefrom and disposed adjacent the surface 22 and has a pair of apertures 32 formed therethrough.
The motor 12 has a pair of electrical terminals 34, 36 extending out~ardly and do~nwardly therefrom.
Each of the terminals is received, respectively, thro~gh one of the apertures 32 and extends outwardly therefrom generally at right angles to the side 22 of the gear case. The portion of the terminals between the lug 28 and the motor 12 is preferably provided with suitable insulation.
R~ferring no~- to fig~re 3, the lug 28 is sho~n in enlarged cross section, wherein the guide pin portion 3~ formed preferably integrally therewith and extending oownwardly therefrom is clearly illustrated. The guide pin portion 38 engages a corresponding guiàe hole 39 formed in the device 30 for aligning and positioning the gear case 16 against the surface 26 of the device 30.
The electrical terminals 34, 36 each have barbs, indicated respectively, at 40, 42 provided thereon for engaging the wall of one of the holes 32 for resisting removal from the direction of insertion, or push loads directed upwardly on the ends of the pin, as shown in figure 3.
Referring to figures 1 and 2, the~fastening means for the module 10 is illustrated in the form of a plurality of barbed prongs disposed in sets indicated generally at 44, 46 disposed on opposite sides of the gear case 16. Each set of prongs 44, 46 preferably comprises a plurality of barbed prongs extending from the side wall of the gear case downwardly in a direction 125U'73~3 generally parallel to the axis of pinion 24. With reference to fi~ure 1, the set 44 of barbed prongs comprises three prongs extending in generally spaced parallel relationship with barbed tips 4B provided thereon for snap locking engagement with the wall of device 30 when the barbs are received in a hole 50 provided in the surface 26 of the device to be driven.
It will be understood that, for assembly, the module 10 is positioned over the surface 26 of the device 30 to be driven, pinion 24 is inserted to a suitable clearance hole 52 provided in the aevice to be driven, simultaneously the guide pin 3& is eng3ged in a locating ho~e 3q and bar~c 44 and 4~ er.ter ho~es provided tne.efor as shown typically at 50 in figure 1.
As the modul~ 10 is further moved to enga~ement with the surface 26 of a device to be driven, barbeo PL ongs 44, 46 snap-locK to engage the undersurface 56 of the device to be criven; a~d, terminals 34, 36 engage suitable electrical rec-pt3cles shown as tubular connectors 58, 60 provioed ir, device 30. Tne receptacles 58, 60 function to su;-~ly electrical power to the motor 12.
Tne p ~-ion 24 provides mechanical power from the module 10 t~ the device 30 to be driven by engagement with the teeth of pinion 24. The module 10 is shown in th~ fully operationally installed position in figure 1 wit~, the side 22 of gear case 16 in contact with surface 2~ of a driver 30. It will be understood that, if it is required to remove the dule 10 from assembly with the device 30, it is necessary to have access to the tips of the barbs 44, 4~ to compress the barbs for release through the engagement hole s~ch as hole 50.
~12~
The present invention thus provides a plug-in power transmission module for attachment to a device to be driven such as a programmer/controller, and which may be installed with a simple push-in snap-locking engagement. The present invention provides simultaneous connection of a driving gear pinion, motor electrical connector terminals and snap locking fastening means for retaining the module in its operating position.
Although the invention has hereinabove been 1~ described with reference to ~ne illustrated embodiment, it will be understood that the invention is capable of modification and variation by those of ordinary skill in the art within the scope of the following claims.
Small synchronous timing motors are typically used with a speed reducer for driving timer/controllers or programmer timers as they are sometimes referred to, employed for service cycle control of domestic appliances such as clothes dryers, washing machines and microwave cooking ovens.
In the design of appliances of the aforesaid type employing a timing motor and speed reducer, the motor and speed reducer subassembly drivingly engages a series of cam wheels for sequentially actuating and deactuating electrical switches for controlling various appliance electrical Eunctions.
In known programmer timers for appliances, heretofore it has been the practice to provide a suitable common housing or casing for the cam actuating mechanism and switches and to attach the separate motor and speed reducer thereto with suitable fastening techniques. Typically, the speed reducer mechanism is assembled onto the switch housing and the motor is then fastened thereto. In such known programmer timers, the switches and can mechanism are usually assembled onto the opposite side of the housing and suitable electrical terminals for the switches provided for connecting the motor leads and switches thereto.
This type of programmer timer assembling arrangement has required numerous positioning and assembly operations which have proven to be costly in high volume manufacturing.
It has, there-Eore, long been desired to provide a technique for assembling a motor and speed reducer to a cam actuated switch programmer in a manner which permits rapid and inexpensive modular assembly during manufacturing.
According to one aspect of the present invention there is provided a method of assembling a motor gear drive with device lZS~73~3 to be driven, the method including the steps of providing a gear box with an electrical terminal guide means and having a power output shaft extending from one side thereof and a power input shaft connec-tion provided on the opposite side thereof, and providing a motor having a motor shaft extending therefrom and a pair of electrical terminals extending therefrom in the direction of the motor shaft. The method further includes the steps of inserting the motor shaft into the gear box and engaging -the motor shaft with the power input connection and inserting the electrical terminals in the direction of the motor shaft into the guide means all in a common direction, and inserting -the power output shaft into engagement with a device to be driven and simultaneously in a common direction therewith, inserting the terminals into electrical power source connection of the device.
According to another aspect of the invention there is provided a method of assembling a motor drive including the steps of providing a motor speed reducer in a housing with an output shaft engageable from one side thereof and extending electrical connector means in the direction of the power shaft from the one side of the housing. The method further includes the steps of extending releasable fastening means from the housing means on one side and inserting substantially simultaneously, in the direction of the output shaft, the output shaft, the connector means and the fastener means into a drive to be driven and operatively engaging each of the means with the device for transmitting electrical power to the motor means and mechanical power to the device and securing the motor speed reducer to the device.
Brief Description of the Drawings Figure 1 is a side view in elevation of the power transmission module of the present invention shown installed on a device to be driven portions of which are broken away for clarity;
Figure 2 is a bottom view of -the module of Figure 1 with the device to be driven omitted for clarity; and, 3~3 Figure 3 is a section view taken along section indicat-ing lines 3-3 of figure 2.
Detailed Description Referring now to Figures 1 and 2, the power transmis-sion module is indicated generally at 10 with a motor 12 preferably of the synchronous permanent magnet type having a mounting flange 14. The motor is received on a gear case or housing 16 with the motor output shaft 18 received in the gear case in mechanical engagement with the input gear (not shown) thereof. The motor flange 14 is retained against the gear case by a suitable fastening expedient as, for example, heat deformed plastic rivets 20 received through the flange 14.
The side 22 of the gear case opposite the motor has extending therefrom an output pinion 24 for driving engagement with the device to be driven, indicated `:
~25r~?7~3 generally at 30, which has a surface 26 upon which the gear case surface 22 is mounted in contact therewith.
The gear case 16 has a terminal guide lug 28 extending therefrom and disposed adjacent the surface 22 and has a pair of apertures 32 formed therethrough.
The motor 12 has a pair of electrical terminals 34, 36 extending out~ardly and do~nwardly therefrom.
Each of the terminals is received, respectively, thro~gh one of the apertures 32 and extends outwardly therefrom generally at right angles to the side 22 of the gear case. The portion of the terminals between the lug 28 and the motor 12 is preferably provided with suitable insulation.
R~ferring no~- to fig~re 3, the lug 28 is sho~n in enlarged cross section, wherein the guide pin portion 3~ formed preferably integrally therewith and extending oownwardly therefrom is clearly illustrated. The guide pin portion 38 engages a corresponding guiàe hole 39 formed in the device 30 for aligning and positioning the gear case 16 against the surface 26 of the device 30.
The electrical terminals 34, 36 each have barbs, indicated respectively, at 40, 42 provided thereon for engaging the wall of one of the holes 32 for resisting removal from the direction of insertion, or push loads directed upwardly on the ends of the pin, as shown in figure 3.
Referring to figures 1 and 2, the~fastening means for the module 10 is illustrated in the form of a plurality of barbed prongs disposed in sets indicated generally at 44, 46 disposed on opposite sides of the gear case 16. Each set of prongs 44, 46 preferably comprises a plurality of barbed prongs extending from the side wall of the gear case downwardly in a direction 125U'73~3 generally parallel to the axis of pinion 24. With reference to fi~ure 1, the set 44 of barbed prongs comprises three prongs extending in generally spaced parallel relationship with barbed tips 4B provided thereon for snap locking engagement with the wall of device 30 when the barbs are received in a hole 50 provided in the surface 26 of the device to be driven.
It will be understood that, for assembly, the module 10 is positioned over the surface 26 of the device 30 to be driven, pinion 24 is inserted to a suitable clearance hole 52 provided in the aevice to be driven, simultaneously the guide pin 3& is eng3ged in a locating ho~e 3q and bar~c 44 and 4~ er.ter ho~es provided tne.efor as shown typically at 50 in figure 1.
As the modul~ 10 is further moved to enga~ement with the surface 26 of a device to be driven, barbeo PL ongs 44, 46 snap-locK to engage the undersurface 56 of the device to be criven; a~d, terminals 34, 36 engage suitable electrical rec-pt3cles shown as tubular connectors 58, 60 provioed ir, device 30. Tne receptacles 58, 60 function to su;-~ly electrical power to the motor 12.
Tne p ~-ion 24 provides mechanical power from the module 10 t~ the device 30 to be driven by engagement with the teeth of pinion 24. The module 10 is shown in th~ fully operationally installed position in figure 1 wit~, the side 22 of gear case 16 in contact with surface 2~ of a driver 30. It will be understood that, if it is required to remove the dule 10 from assembly with the device 30, it is necessary to have access to the tips of the barbs 44, 4~ to compress the barbs for release through the engagement hole s~ch as hole 50.
~12~
The present invention thus provides a plug-in power transmission module for attachment to a device to be driven such as a programmer/controller, and which may be installed with a simple push-in snap-locking engagement. The present invention provides simultaneous connection of a driving gear pinion, motor electrical connector terminals and snap locking fastening means for retaining the module in its operating position.
Although the invention has hereinabove been 1~ described with reference to ~ne illustrated embodiment, it will be understood that the invention is capable of modification and variation by those of ordinary skill in the art within the scope of the following claims.
Claims (3)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of assembling a motor gear drive with device to be driven, comprising the steps of:
(a) providing a gear box with electrical terminal guide means and having a power output shaft extending from one side thereof and a power input shaft connection provided on the opposite side thereof;
(b) providing a motor having a motor shaft extending therefrom and a pair of electrical terminals extending therefrom in the direction of the motor shaft;
(c) inserting said motor shaft into said gear box and engaging said motor shaft with said power input connection and inserting said electrical terminals in the directions of said motor shaft into said guide means all in a common direction, and, (d) inserting said power output shaft into engagement with a device to be driven and simultaneously in a common direction therewith, inserting said terminals into electrical power source connection on said device.
(a) providing a gear box with electrical terminal guide means and having a power output shaft extending from one side thereof and a power input shaft connection provided on the opposite side thereof;
(b) providing a motor having a motor shaft extending therefrom and a pair of electrical terminals extending therefrom in the direction of the motor shaft;
(c) inserting said motor shaft into said gear box and engaging said motor shaft with said power input connection and inserting said electrical terminals in the directions of said motor shaft into said guide means all in a common direction, and, (d) inserting said power output shaft into engagement with a device to be driven and simultaneously in a common direction therewith, inserting said terminals into electrical power source connection on said device.
2. A method of assembling a motor drive comprising:
(a) providing a motor speed reducer in a housing with an output shaft engageable from one side thereof, (b) extending electrical connector means in the direction of said output shaft from said one side of said housing (c) extending releasable fastening means from said housing means one side; and, (d) inserting substantially simultaneously, in the direction of said output shaft, said output shaft, said connector means and said fastening means into a device to be driven and operatively engaging each of said means with said device for transmitting electrical power to said motor means and mechanical power to said device and securing said motor speed reducer to said device.
(a) providing a motor speed reducer in a housing with an output shaft engageable from one side thereof, (b) extending electrical connector means in the direction of said output shaft from said one side of said housing (c) extending releasable fastening means from said housing means one side; and, (d) inserting substantially simultaneously, in the direction of said output shaft, said output shaft, said connector means and said fastening means into a device to be driven and operatively engaging each of said means with said device for transmitting electrical power to said motor means and mechanical power to said device and securing said motor speed reducer to said device.
3. The method defined in claim 2, wherein the step of extending said connector means from said one side includes the steps of inserting a (said) motor onto said housing and simultaneously inserting said electrical connector means through guide means on said housing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62985684A | 1984-07-11 | 1984-07-11 | |
US629,856 | 1990-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1250738A true CA1250738A (en) | 1989-03-07 |
Family
ID=24524784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000482681A Expired CA1250738A (en) | 1984-07-11 | 1985-05-29 | Method of assembling a motor-speed reducer to a device to be driven |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS6136561A (en) |
AU (1) | AU581231B2 (en) |
BR (1) | BR8503007A (en) |
CA (1) | CA1250738A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112431913A (en) * | 2020-10-28 | 2021-03-02 | 无锡同方聚能控制科技有限公司 | Large-transmission-ratio silent gear box and sweeper applying same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0515933Y2 (en) * | 1987-01-28 | 1993-04-27 | ||
JP2661251B2 (en) * | 1989-03-30 | 1997-10-08 | 三菱マテリアル株式会社 | Rotary electrode type powder production equipment |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5224706Y2 (en) * | 1971-07-07 | 1977-06-04 | ||
JPS50116861A (en) * | 1974-03-01 | 1975-09-12 | ||
JPS5625337Y2 (en) * | 1976-02-10 | 1981-06-15 | ||
US4129276A (en) * | 1978-01-30 | 1978-12-12 | General Signal Corporation | Technique for the detection of flat wheels on railroad cars by acoustical measuring means |
US4250420A (en) * | 1979-06-05 | 1981-02-10 | Emhart Industries, Inc. | Sandwich structure for a combination motor and gear train with a timing mechanism |
-
1985
- 1985-05-29 CA CA000482681A patent/CA1250738A/en not_active Expired
- 1985-06-14 AU AU43671/85A patent/AU581231B2/en not_active Ceased
- 1985-06-24 BR BR8503007A patent/BR8503007A/en unknown
- 1985-07-11 JP JP15331585A patent/JPS6136561A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112431913A (en) * | 2020-10-28 | 2021-03-02 | 无锡同方聚能控制科技有限公司 | Large-transmission-ratio silent gear box and sweeper applying same |
Also Published As
Publication number | Publication date |
---|---|
BR8503007A (en) | 1986-03-11 |
AU581231B2 (en) | 1989-02-16 |
JPS6136561A (en) | 1986-02-21 |
AU4367185A (en) | 1986-01-16 |
JPS6343621B2 (en) | 1988-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |