CA1197877A - Axially biased shaft seal - Google Patents
Axially biased shaft sealInfo
- Publication number
- CA1197877A CA1197877A CA000414461A CA414461A CA1197877A CA 1197877 A CA1197877 A CA 1197877A CA 000414461 A CA000414461 A CA 000414461A CA 414461 A CA414461 A CA 414461A CA 1197877 A CA1197877 A CA 1197877A
- Authority
- CA
- Canada
- Prior art keywords
- bearing eye
- shaft
- driveshaft
- seal
- bell
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
- A47J43/07—Parts or details, e.g. mixing tools, whipping tools
- A47J43/08—Driving mechanisms
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
- A47J43/046—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven with tools driven from the bottom side
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Food-Manufacturing Devices (AREA)
- Sealing Of Bearings (AREA)
- Sealing Devices (AREA)
- Motor Or Generator Frames (AREA)
Abstract
ABSTRACT
A shaft seal for a shaft extending through a bearing eye in a separation wall between a drive motor space on one side of the wall and a working space on the other side of the wall, such as in a multipurpose kitchen machine. A plastic case surrounds the shaft and extends through a bearing eye in the separation wall, and the case cooperates with a sealing bell which is engaged by a sealing ring positioned between the bell and the bearing eye. The construction is simpler than that utilized in known devices and avoids the previously usually close tolerances and resulting higher costs present in known devices.
A shaft seal for a shaft extending through a bearing eye in a separation wall between a drive motor space on one side of the wall and a working space on the other side of the wall, such as in a multipurpose kitchen machine. A plastic case surrounds the shaft and extends through a bearing eye in the separation wall, and the case cooperates with a sealing bell which is engaged by a sealing ring positioned between the bell and the bearing eye. The construction is simpler than that utilized in known devices and avoids the previously usually close tolerances and resulting higher costs present in known devices.
Description
~7877 This invention relates to a seal, and more particularly to a seal for use in a multipurpose kitchen machine with an electric drive motor, whose driveshaft is equipped with a plastic casing, and wherein the driveshaft penetrates a separation wall ~etween th.e motor receiving space and the working space of the machine.
With multipurpose kitchen machines, it is known that the driveshaft, which can be coupled with different tools and which protrudes into the working space of the device, can be sealed bv shaft seals in a manner that is in itself well known, for example by shaft sealing rings, glands, labyrinth seals, in the area of the shaft penetrationO In this way, the liquid or doughy mass which is situated in the working space of the kitchen appliance is prevented from penetrating into the motor receiving space of the kitchen machine. One presupposition for this is that the driveshaft will be ma-tched exactly to the penetration which is associated with it and which is situated within the separation wall ~etween the working space and the motor receiving space of the kitchen machine. This requirement requires a relatively expensive.mountiny of the driveshaft and suitable pairings of materials (metal-plastic) in the area of the separation wall, resulting in relatively high manufacturing costs.
The purpose of the present invention is to design the penetration of the driveshaft, which is located in the area of the separation wall between the motor receiving space and the working space of the multipurpose kitchen machine, much simpler than previously, while avoiding the previously usual close tolerances, which cause an increase in costs, whereby now as ~ ~97~
before a seal, appropriate to its usel of -the workinc~ space as against the motor receiving space of the appliance is quaranteed.
The seal according to the invention has a plastic casing in the area of the separation wall and is shaped in such a manner that, in collaboration with a sealing bell, it forms a seal, appropria-te to its use, of the shaft pene-tration, which consists of the bearing eye on the one han~ and of the drive-shaft which penetrates it with a certain amount of play, on ; 10 the other hand. Here, the sealing bell is set on the mo~o~
space side against the bearing eye which is formed onto the separation wall, while a sealing ring is pl~ced in ~etween.
The present invention generally relates to a shaft seal for a shaEt extending through a bearing eye in a separation wall between a drive motor space on one side of the wall and a working space on the other side of the wall. The shaft seal has a plastic sleeve surrounding t~e shaft in one of the spaces and having an end projecting through the bearing eye with a clearance between the sleeve and the bearing eye.
The end of the plastic sleeve is secured to the shaftr and a sealing bell is provided in the other of the spaces having an internal opening engaging the end of the sleeve. The bell ; has a flared portion deEining an outer surface, and a seal member is located between the flared portion and the bearing eye and engages the outer surEace.
The invention is explained in more de~ail with reference to an embodiment that is shown in cross-sectional view of the single Eigure in the accompanyin~ drawing.
l377 As the single figure shows, -the driveshaft 1 of the household appliance ls mounted in the mot,or receiving .space 2 by ~eans of the bearin~s 3 and d, which are cor~lercial units and which are disposed so as -to be fixed in the device. Each of these bearin~s - as can be seen from the representation of beariny 3 - has a ball-like ~asing 3.1 and is taken up by housiny shell 5 ~hich has a concave shape.
The bearing 3 is pxessed against this housiny sheel through a flexible pressure ring 5.1 which is fastened at the shell 5, A sealing ring made of steel 1.2 with a contact surface consisting of an ela~t,ic material 1.3 i5 used, in a manner that is in itself well known, to provide an axial securiny of the driveshaft 1 with respect to the two bearings 3 and 4 which receive said driveshaft 1 and which are fixed in the device.
, In the area of the working space 6 of the household - 2a -~':.' ' ~ ."~
~7~37'7 appliance~ the driveshaft 1 is surrounded with an electrically insulating casing 7 made of plastic. This casi:ny extends as far as the area of the penetration, associated with the driveshaft 1, within the device-side sepa.ration wall 8 between the working space 6 and the motor receiving space 2 of the household appliance.
This penetration here cons1sts of a boring 8.1 in the separation wall 8 of the device housing, where said boring 8.1 surrounds with some play the driveshaft 1 including the casing 7 that is set upon it. To seal the working space 6 against the motor receiving space 2, a collar 7.1 has now been formed onto the casing 7 in the area o the penetration 8.1. This collar 7~1 is provided with an annular groove 7.2, which is provided to receive a lubricant which at the same time has a sealing action.
As can be seen from the drawing, the boring 8.1 is associated with a bearin.g eye 8.~ of the separation wall 8, where said bearing eye 8.2 has a bell-shaped design. A sealing bell 9 now comes to lie against this bearing eye, where said sealing bell 9 is set upon the collar 7.1 of the casing 7. A
; ring seal 10 is disposed between .the sealing bell 9 and the ~0 bearing eye 8.2. This sealing ring 10 consists of an elastic organic material, for example sponge rubber.
The sealing bell 9 preerably consists of a material that has a high inherent elasticity. The sealing bell 9 is pressed against the sealing ring 10 by means of the collar 7.1 which with the casing 7 that is pressed together with the driveshaft 1, where said casing 7 itself is seated on a bond 1.1 that is formed onto the driveshaft 1 and thus is retained in its functionally proper position with respect to the drivesha:Et 1.
., - 3 -7~
setween the circu~ference of the casing 7 and the boring 8.1 of the bearing eye 8.2 on the one hand, as well as between the bearing eye 8.2 and the sealing bell 9 on the other hand, there arise free spaces. Here, the sealing bell 9 is turned towards the bearing eye 8.2 at a small distance due to the ring seal 10 which lies in between. The resulting free spaces fill with the lubricant that is stored in the annular groove 7.2 of the collar 7.1 and thus, to a significant extent, cause the sealing of the shaEt penetration that is formed in this way.
The sealing bell 9 collaborates with the bearing eye 8.2 including the intermediate sealing ring 10 on the one hand and with the collar 7.1, which i5 formed onto the casing 7 and which has a circular groove 7.2, on the other hand, with inclusion of the lubricant that is stored in the annular groove 7.2. Despite the relatively large tolerances between the outside diameter of the protective casing 7 which is associated with the driveshaft 1, and the boring 8.1 of the separation wall 8, this collaboration creates a seal, appropriate for its use, of the shaft penetration of the household appliance in accord with the innovation, where said shaft penetration extends from the motor receiving space 2 into the working space 6.
~ ,.
:
~ ~ .
With multipurpose kitchen machines, it is known that the driveshaft, which can be coupled with different tools and which protrudes into the working space of the device, can be sealed bv shaft seals in a manner that is in itself well known, for example by shaft sealing rings, glands, labyrinth seals, in the area of the shaft penetrationO In this way, the liquid or doughy mass which is situated in the working space of the kitchen appliance is prevented from penetrating into the motor receiving space of the kitchen machine. One presupposition for this is that the driveshaft will be ma-tched exactly to the penetration which is associated with it and which is situated within the separation wall ~etween the working space and the motor receiving space of the kitchen machine. This requirement requires a relatively expensive.mountiny of the driveshaft and suitable pairings of materials (metal-plastic) in the area of the separation wall, resulting in relatively high manufacturing costs.
The purpose of the present invention is to design the penetration of the driveshaft, which is located in the area of the separation wall between the motor receiving space and the working space of the multipurpose kitchen machine, much simpler than previously, while avoiding the previously usual close tolerances, which cause an increase in costs, whereby now as ~ ~97~
before a seal, appropriate to its usel of -the workinc~ space as against the motor receiving space of the appliance is quaranteed.
The seal according to the invention has a plastic casing in the area of the separation wall and is shaped in such a manner that, in collaboration with a sealing bell, it forms a seal, appropria-te to its use, of the shaft pene-tration, which consists of the bearing eye on the one han~ and of the drive-shaft which penetrates it with a certain amount of play, on ; 10 the other hand. Here, the sealing bell is set on the mo~o~
space side against the bearing eye which is formed onto the separation wall, while a sealing ring is pl~ced in ~etween.
The present invention generally relates to a shaft seal for a shaEt extending through a bearing eye in a separation wall between a drive motor space on one side of the wall and a working space on the other side of the wall. The shaft seal has a plastic sleeve surrounding t~e shaft in one of the spaces and having an end projecting through the bearing eye with a clearance between the sleeve and the bearing eye.
The end of the plastic sleeve is secured to the shaftr and a sealing bell is provided in the other of the spaces having an internal opening engaging the end of the sleeve. The bell ; has a flared portion deEining an outer surface, and a seal member is located between the flared portion and the bearing eye and engages the outer surEace.
The invention is explained in more de~ail with reference to an embodiment that is shown in cross-sectional view of the single Eigure in the accompanyin~ drawing.
l377 As the single figure shows, -the driveshaft 1 of the household appliance ls mounted in the mot,or receiving .space 2 by ~eans of the bearin~s 3 and d, which are cor~lercial units and which are disposed so as -to be fixed in the device. Each of these bearin~s - as can be seen from the representation of beariny 3 - has a ball-like ~asing 3.1 and is taken up by housiny shell 5 ~hich has a concave shape.
The bearing 3 is pxessed against this housiny sheel through a flexible pressure ring 5.1 which is fastened at the shell 5, A sealing ring made of steel 1.2 with a contact surface consisting of an ela~t,ic material 1.3 i5 used, in a manner that is in itself well known, to provide an axial securiny of the driveshaft 1 with respect to the two bearings 3 and 4 which receive said driveshaft 1 and which are fixed in the device.
, In the area of the working space 6 of the household - 2a -~':.' ' ~ ."~
~7~37'7 appliance~ the driveshaft 1 is surrounded with an electrically insulating casing 7 made of plastic. This casi:ny extends as far as the area of the penetration, associated with the driveshaft 1, within the device-side sepa.ration wall 8 between the working space 6 and the motor receiving space 2 of the household appliance.
This penetration here cons1sts of a boring 8.1 in the separation wall 8 of the device housing, where said boring 8.1 surrounds with some play the driveshaft 1 including the casing 7 that is set upon it. To seal the working space 6 against the motor receiving space 2, a collar 7.1 has now been formed onto the casing 7 in the area o the penetration 8.1. This collar 7~1 is provided with an annular groove 7.2, which is provided to receive a lubricant which at the same time has a sealing action.
As can be seen from the drawing, the boring 8.1 is associated with a bearin.g eye 8.~ of the separation wall 8, where said bearing eye 8.2 has a bell-shaped design. A sealing bell 9 now comes to lie against this bearing eye, where said sealing bell 9 is set upon the collar 7.1 of the casing 7. A
; ring seal 10 is disposed between .the sealing bell 9 and the ~0 bearing eye 8.2. This sealing ring 10 consists of an elastic organic material, for example sponge rubber.
The sealing bell 9 preerably consists of a material that has a high inherent elasticity. The sealing bell 9 is pressed against the sealing ring 10 by means of the collar 7.1 which with the casing 7 that is pressed together with the driveshaft 1, where said casing 7 itself is seated on a bond 1.1 that is formed onto the driveshaft 1 and thus is retained in its functionally proper position with respect to the drivesha:Et 1.
., - 3 -7~
setween the circu~ference of the casing 7 and the boring 8.1 of the bearing eye 8.2 on the one hand, as well as between the bearing eye 8.2 and the sealing bell 9 on the other hand, there arise free spaces. Here, the sealing bell 9 is turned towards the bearing eye 8.2 at a small distance due to the ring seal 10 which lies in between. The resulting free spaces fill with the lubricant that is stored in the annular groove 7.2 of the collar 7.1 and thus, to a significant extent, cause the sealing of the shaEt penetration that is formed in this way.
The sealing bell 9 collaborates with the bearing eye 8.2 including the intermediate sealing ring 10 on the one hand and with the collar 7.1, which i5 formed onto the casing 7 and which has a circular groove 7.2, on the other hand, with inclusion of the lubricant that is stored in the annular groove 7.2. Despite the relatively large tolerances between the outside diameter of the protective casing 7 which is associated with the driveshaft 1, and the boring 8.1 of the separation wall 8, this collaboration creates a seal, appropriate for its use, of the shaft penetration of the household appliance in accord with the innovation, where said shaft penetration extends from the motor receiving space 2 into the working space 6.
~ ,.
:
~ ~ .
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A shaft seal for a shaft extending through a bearing eye in a separation wall between a drive motor space on one side of the wall and a working space on the other side of the wall, said seal including a plastic sleeve surrounding said shaft in one of said spaces and having an end projecting through said bearing eye with a clearance between said sleeve and said bearing eye, said end being secured to said shaft, a sealing bell in the other of said spaces having an internal opening engaging the end of said sleeve, said bell having a flared portion defining an outer surface, a seal member located between said flared portion and said bearing eye and engaging said outer surface.
2. In a multipurpose kitchen device with an electric driving motor, a driveshaft penetrating a separation wall between a motor receiving space and a working space of the device, where said driveshaft is equipped with a plastic casing, characterized by said plastic casing being formed in the area of the separation wall in such a manner that, in collaboration with a sealing bell, it forms a seal, appropriate for its use, of the shaft penetration, which consists of a bearing eye on the one hand and of the drive-shaft which penetrates it with a certain amount of play on the other hand, a sealing bell being set on the motor space side against the bearing eye, which is formed onto the separation wall, with a ring seal being placed in between.
3. In a multipurpose kitchen machine according to claim 2, further characterized by the plastic casing surrounding the driveshaft as a component of the shaft penetration and having formed therein a collar with an annular groove serving to receive a lubricant which at the same time has a sealing action, where said collar, under the axial action of the driveshaft, presses the sealing bell including the ring seal against the bearing eye.
4. In a multipurpose kitchen machine according to claim 2 or 3, characterized by the circumference of the casing, which surrounds the driveshaft and a boring which is associated with the bearing eye, on the one hand, as well as between the bearing eye and the sealing bell, which is turned towards it at a small distance, on the other hand, forming free spaces for receiving the lubricant that is stored in the annular groove of the collar.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG8132225.9 | 1981-11-04 | ||
| DE19818132225 DE8132225U1 (en) | 1981-11-04 | 1981-11-04 | MULTI-PURPOSE KITCHEN MACHINE WITH AN ELECTRIC DRIVE MOTOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1197877A true CA1197877A (en) | 1985-12-10 |
Family
ID=6732708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000414461A Expired CA1197877A (en) | 1981-11-04 | 1982-10-29 | Axially biased shaft seal |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0078423B1 (en) |
| AU (1) | AU553232B2 (en) |
| CA (1) | CA1197877A (en) |
| DE (1) | DE8132225U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9271608B2 (en) | 2007-11-19 | 2016-03-01 | Seb S.A. | Container for electrical household food preparation appliance comprising a lower transmission component |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3608377A1 (en) * | 1986-03-13 | 1987-09-17 | Braun Ag | Mounting for spherical-cap bearing |
| DE19907052A1 (en) * | 1999-02-19 | 2000-08-24 | Bsh Bosch Siemens Hausgeraete | Kitchen appliance used as a food blender has a knife store formed as a dome shape |
| DE102013106418A1 (en) * | 2013-06-19 | 2014-12-24 | Vorwerk & Co. Interholding Gmbh | Food processor agitator seal and shaft seal and method of making a shaft seal |
| CN209499488U (en) * | 2018-10-30 | 2019-10-18 | 浙江欧焙佳厨具有限公司 | A kind of assembly for creating milk foam |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE571304A (en) * | ||||
| US1809363A (en) * | 1927-06-08 | 1931-06-09 | Domestic Electric Company | Material treating machine |
| US1874079A (en) * | 1929-07-26 | 1932-08-30 | Travis Process Corp | Dispersion machine |
| CH340320A (en) * | 1955-04-07 | 1959-08-15 | Bosch Gmbh Robert | Sealing of a shaft passed through the wall of a container |
| GB816594A (en) * | 1956-10-29 | 1959-07-15 | Asea Ab | Shaft sealing device |
| DE2461286B2 (en) * | 1974-12-23 | 1978-04-27 | Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart | Household appliance, in particular device for stirring and kneading food |
| CA1099201A (en) * | 1977-11-02 | 1981-04-14 | James E. Williams | Compact speed-reducing universal motor drive assembly arrangement for food processor |
-
1981
- 1981-11-04 DE DE19818132225 patent/DE8132225U1/en not_active Expired
-
1982
- 1982-10-14 EP EP82109495A patent/EP0078423B1/en not_active Expired
- 1982-10-29 CA CA000414461A patent/CA1197877A/en not_active Expired
- 1982-11-03 AU AU90121/82A patent/AU553232B2/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9271608B2 (en) | 2007-11-19 | 2016-03-01 | Seb S.A. | Container for electrical household food preparation appliance comprising a lower transmission component |
Also Published As
| Publication number | Publication date |
|---|---|
| AU9012182A (en) | 1983-05-12 |
| EP0078423A2 (en) | 1983-05-11 |
| AU553232B2 (en) | 1986-07-10 |
| EP0078423A3 (en) | 1983-09-21 |
| EP0078423B1 (en) | 1985-07-31 |
| DE8132225U1 (en) | 1982-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |