CN107131286B - Driving part mounting structure and household appliance - Google Patents
Driving part mounting structure and household appliance Download PDFInfo
- Publication number
- CN107131286B CN107131286B CN201710517580.5A CN201710517580A CN107131286B CN 107131286 B CN107131286 B CN 107131286B CN 201710517580 A CN201710517580 A CN 201710517580A CN 107131286 B CN107131286 B CN 107131286B
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- Prior art keywords
- bearing
- transmission
- mounting
- piece
- mounting structure
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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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0031—Shaft assemblies for gearings with gearing elements rotatable supported on the shaft
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
- D06F58/04—Details
- D06F58/08—Driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/061—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing mounting a plurality of bearings side by side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
- H02K7/1012—Machine arranged inside the pulley
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention relates to the field of transmission part installation, and discloses a transmission part installation structure and a household appliance. The transmission mounting structure includes: a power input member (5); a transmission member (6) connected to the power input member; the outer ring of the first bearing (3) is in clearance fit with the transmission piece; the mounting part (1) and the support shaft (2) are in interference fit with the inner ring of the first bearing, and the mounting part is used for mounting the support shaft; the inner ring of the second bearing (8) is in clearance fit with the supporting shaft, and the outer ring of the second bearing (8) is in interference fit with the transmission piece; and the power output piece (7) is connected with the transmission piece. Through the technical scheme, the transmission piece is very convenient to install, the first bearing and the second bearing are conveniently pre-tensioned, and the rotation precision and the axial rigidity of the first bearing and the second bearing are improved.
Description
Technical Field
The invention relates to the installation of a transmission part, in particular to a transmission part installation structure and a household appliance.
Background
Along with the development of technology, the living standard of people is higher and higher, and various household appliances enter the life of people more and more, especially the household appliances, and more hands are liberated, so that people have more time to do things to do.
Taking a clothes dryer as an example, a transmission mechanism of the clothes dryer is mostly driven by two stages, specifically, a motor transmits power to a belt through a rotor shaft of the motor, the belt transmits torque to a transmission member, then the power is transmitted to the belt of the clothes dryer through the transmission member, and finally, a roller of the clothes dryer is driven by the belt of the clothes dryer to rotate. In general, the transmission member is mounted on the support shaft through two bearings, since the transmission member is subjected to tensile force of two belts. Specifically, due to the restriction of assembly conditions, the transmission piece is in interference fit with the outer rings of the two bearings, and the supporting shaft is in clearance fit with the inner rings of the two bearings.
However, the structure can realize the secondary transmission function, but because the two bearings are in a loose fit state with the supporting shaft and the transmission part due to the special matching of the two bearings, the outer ring is tightly matched with the inner ring, and the inner ring of the bearings is smaller in size, so that the two bearings are inconvenient to pre-tighten, and therefore, when the clothes dryer works, the two bearings and the transmission part can axially float on the supporting shaft due to abnormal shaking and vibration under certain conditions, and the supporting shaft is worn. Moreover, the clothes dryer may have a phenomenon of belt slackening after long-time use, so that the belt tension is insufficient, so that the bearing inner ring and the support shaft are easy to slide circumferentially, the support shaft is severely worn and even damaged, the bearing rotation precision is possibly lowered, the temperature is also rapidly raised during the period, and meanwhile, noise, vibration, motor blocking and the like are also caused.
Disclosure of Invention
The invention aims to solve the problems of inconvenient pre-tightening of a bearing and abrasion of a supporting shaft in the prior art, and provides a transmission part mounting structure.
In order to achieve the above object, an aspect of the present invention provides a transmission member mounting structure including:
a power input member;
the transmission piece is connected with the power input piece;
the outer ring of the first bearing is in clearance fit with the transmission piece;
the mounting part is used for mounting and supporting the supporting shaft of the transmission part, the supporting shaft is in interference fit with the inner ring of the first bearing, and the mounting part is used for mounting the supporting shaft;
the inner ring of the second bearing is in clearance fit with the supporting shaft, and the outer ring of the second bearing is in interference fit with the transmission piece;
and the power output piece is connected with the transmission piece.
Preferably, the transmission mounting structure includes:
the pre-tightening piece is arranged between the outer ring of the first bearing and the transmission piece;
and the limiting piece is arranged at one end, far away from the first bearing, of the second bearing.
Preferably, the transmission member includes a first bearing chamber for mounting the first bearing and a second bearing chamber for mounting the second bearing, the first bearing chamber and the second bearing chamber having the same basic dimensions and different tolerances in diameter; and/or the number of the groups of groups,
the support shaft comprises a first bearing mounting section for mounting a first bearing and a second bearing mounting section for mounting a second bearing, wherein the first bearing mounting section and the second bearing mounting section have the same basic size and different tolerance of the shaft diameter.
Preferably, the first bearing and/or the second bearing is a rolling bearing.
Preferably, the first bearing and the second bearing are deep groove ball bearings, and the radial play of the first bearing and the second bearing is 15-20 micrometers.
Preferably, the first bearing chamber and the second bearing chamber are transitioned by a step at which the pretensioning member is disposed.
Preferably, the pretension member adopts a washer structure.
Preferably, the gasket is a wave gasket.
Preferably, the limiting piece adopts a circlip.
The second aspect of the invention provides a household appliance, which comprises a motor, a rolling element and the transmission element mounting structure, wherein a rotor shaft of the motor is connected with the power input element, and the power output element is connected with the rolling element.
Preferably, the household appliance is a washing machine or a clothes dryer, the power input part and the power output part are both of belt structures, and the rolling part is a roller of the washing machine or the clothes dryer.
According to the technical scheme, as the inner ring of the first bearing is in interference fit with the supporting shaft, the outer ring of the first bearing is in clearance fit with the transmission part, the inner ring of the second bearing is in clearance fit with the supporting shaft, and the outer ring of the second bearing is in interference fit with the transmission part, the transmission part is very convenient to install, the first bearing and the second bearing are conveniently pre-tensioned, and the rotation precision and the axial rigidity of the first bearing and the second bearing are improved; in addition, when the transmission member mounting structure is applied to a clothes dryer, due to the fact that abnormal working conditions occur in the clothes dryer roller, slipping of the two bearings in the circumferential direction can be possibly caused, and when slipping occurs, friction force of the first bearing on the supporting shaft can be decomposed on the transmission member by adopting the special matching mode of the technical scheme, so that stress conditions of the supporting shaft are improved, and abrasion to the supporting shaft is reduced.
Drawings
FIG. 1 is a schematic diagram of a driving member mounting structure provided by the present invention;
fig. 2 is a schematic view showing a structure in which the first bearing is integrated with the mounting portion (end cap) and the support shaft after being pressed into the support shaft.
Fig. 3 is a schematic structural view of the bearing integrated with the transmission member after being pressed into the transmission member.
Description of the reference numerals
1: a mounting part; 2: a support shaft;
3: a first bearing; 4: a pretension member;
5: a power input member; 6: a transmission member;
7: a power take-off; 8: a second bearing;
9: and a limiting piece.
Detailed Description
In the present invention, unless otherwise specified, terms such as "upper, lower, left, and right" and "upper, lower, left, and right" are used generically to refer to the upper, lower, left, and right illustrated in the drawings; "inner and outer" means inner and outer relative to the contour of the respective parts themselves.
According to one aspect of the present invention, there is provided a transmission mounting structure including a power input member 5, a transmission 6, a first bearing 3, a mounting portion 1, a support shaft 2, a second bearing 8, and a power output member 7.
As shown in fig. 1, the transmission member 6 is connected with the power input member 5, the outer ring of the first bearing 3 is in clearance fit with the transmission member 6, the supporting shaft 2 is in interference fit with the inner ring of the first bearing 3, the mounting portion 1 is used for mounting the supporting shaft 2, and the supporting shaft 2 is used for supporting and fixing the whole transmission member mounting structure. The inner ring of the second bearing 8 is in clearance fit with the supporting shaft 2, the outer ring of the second bearing 8 is in interference fit with the transmission member 6, and the power output member 7 is connected with the transmission member 6. The power source of the transmission piece mounting structure can be a motor, and the mounting part 1 can be an end cover of the motor. In addition, the transmission element 6 may be a transmission wheel structure.
Through the technical scheme, as the inner ring of the first bearing 3 is in interference fit with the supporting shaft 2, the outer ring of the first bearing 3 is in clearance fit with the transmission member 6, and the inner ring of the second bearing 8 is in clearance fit with the supporting shaft 2, the outer ring of the second bearing 8 is in interference fit with the transmission member 6, so that the transmission member 6 is very convenient to install, and the first bearing 3 and the second bearing 8 are conveniently pre-tensioned, and the rotation precision and the axial rigidity of the first bearing 3 and the second bearing 8 are improved; in addition, when the transmission member mounting structure is applied to a clothes dryer, the two bearings can slip in the circumferential direction due to the abnormal working condition of the clothes dryer roller, and when the special matching mode of the technical scheme is adopted, when the slipping phenomenon occurs, the friction force of the first bearing to the supporting shaft can be decomposed to the transmission member, so that the stress condition of the supporting shaft is improved, and the abrasion to the supporting shaft is reduced.
The axial pre-tightening and limiting of the first bearing 3 and the second bearing 8 can be achieved in various manners in this embodiment, and the pre-tightening and limiting of the first bearing 3 and the second bearing 8 are achieved through the cooperation of the pre-tightening piece 4 and the limiting piece 9, specifically, the transmission piece mounting structure comprises the pre-tightening piece 4 and the limiting piece 9, the pre-tightening piece 4 is arranged between the outer ring of the first bearing 3 and the transmission piece 6, and the limiting piece 9 is arranged at one end, far away from the first bearing 3, of the second bearing 8. Wherein the pretensioner 4 may be of a washer construction, in particular a wave washer. The limiting piece 9 can adopt an elastic retainer ring, and specifically, a groove can be formed in the support shaft 2, so that the elastic retainer ring can be installed through the groove.
Further, the transmission member 6 includes a first bearing chamber for mounting the first bearing 3 and a second bearing chamber for mounting the second bearing 8, the first bearing chamber and the second bearing chamber having the same basic dimensions and different tolerances in diameter. Wherein the first bearing chamber and the second bearing chamber may be transitionable by a step at which the pretensioning member 4 is arranged. Correspondingly, the support shaft 2 comprises a first bearing mounting section for mounting the first bearing 3 and a second bearing mounting section for mounting the second bearing 8, the first bearing mounting section being of the same basic size and having different tolerances as the shaft diameter of the second bearing mounting section. Therefore, the method can reduce the technological requirements, is convenient to manufacture and saves the cost.
In addition, the choice of the type of first bearing 3 and second bearing 8 may be determined according to the actual situation, preferably the first bearing 3 and/or the second bearing 8 are rolling bearings. Specifically, the first bearing 3 and the second bearing 8 may be deep groove ball bearings, and the radial play of the first bearing 3 and the second bearing 8 is 15-20 micrometers, so that the long-term working time of the first bearing 3 and the second bearing 8 is prevented from being in a negative play state, and the service life of the bearing is prevented from being affected. Wherein, the selection of the radial play value of the first bearing 3 can be selected according to the matching condition of the first bearing 3 and the first bearing chamber, and the first bearing 3 and the first bearing mounting section, and correspondingly, the selection of the radial play value of the second bearing 8 can be selected according to the matching condition of the second bearing 8 and the second bearing chamber, and the second bearing 8 and the second bearing mounting section.
In addition, for a better understanding of the present invention, the following description will be given of the mounting steps of the transmission mounting structure provided in fig. 1:
first, the support shaft 2 may be fixed to the mounting portion 1 (specifically, an end cover of the motor here);
secondly, mounting a transmission piece; the first bearing 3 is pressed into the support shaft 2, so that the first bearing 3 is fixed on the support shaft 2 in an interference fit manner, as shown in fig. 2; the second bearing 8 is then pressed onto the transmission member 6, so that the outer ring of the second bearing 8 is fixed to the transmission member 6 by interference fit, as shown in fig. 3;
finally, the second bearing 8 and the transmission member 6 are integrally sleeved on the support shaft 2 and the first bearing 3, a pre-tightening member (specifically referred to as a wave washer herein) is placed between the first bearing 3 and the transmission member 6 during the sleeving, and finally the transmission member 6 is pressed to compress the wave washer and an elastic retainer ring is embedded in a groove on the support shaft 2, so that the elastic retainer ring can limit the second bearing 8 and the transmission member 6 to move to the right integrally, and the simultaneous pre-tightening of the wave washer on the first bearing 3 and the second bearing 8 is realized. As described above, this fitting is easy to install, and facilitates pretensioning of the first bearing 3 and the second bearing 8, improves the rotational accuracy and axial rigidity of the bearings, and can prolong the life of the bearings, reducing wear of the support shaft 2.
According to another aspect of the present invention, there is also provided a household appliance including a motor, a rolling member, and the driving member mounting structure, a rotor shaft of the motor being connected to the power input member 5, and the power output member 7 being connected to the rolling member.
The household appliance can be a washing machine or a clothes dryer, the power input piece 5 and the power output piece 7 are both of belt structures, and the rolling piece is a roller of the washing machine or the clothes dryer. When the device is used, one end of the power input piece 5 can be connected with the rotating shaft of the motor, the other end of the power input piece 5 is connected with the transmission piece 6, one end of the power output piece 7 is connected with the transmission piece 6, and the other end of the power output piece 7 is connected with the roller, so that the secondary transmission function can be realized.
The washing machine or the clothes dryer provided by the invention has the advantages that due to the special matching of the first bearing 3, the second bearing 8, the support shaft 2 and the transmission part 6, the rotation precision and the axial rigidity of the first bearing 3 and the second bearing 8 are improved, the stress condition of the support shaft 2 is improved, the abrasion is reduced, and the working reliability of a motor and the clothes dryer or the washing machine is improved. In addition, the installation mode can not influence the normal installation of the power input piece 5 and the power output piece 7 (here, the belt of the motor and the belt of the clothes dryer), and the design and installation process is simple and has strong applicability.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. A transmission mounting structure, characterized in that the transmission mounting structure includes:
a power input member (5);
the transmission piece (6), the said transmission piece (6) is connected with said power input piece (5);
the outer ring of the first bearing (3) is in clearance fit with the transmission piece (6);
the device comprises a mounting part (1) and a supporting shaft (2) for mounting and supporting the transmission piece (6), wherein the supporting shaft (2) is in interference fit with the inner ring of the first bearing (3), and the mounting part (1) is used for mounting the supporting shaft (2);
the inner ring of the second bearing (8) is in clearance fit with the supporting shaft (2), and the outer ring of the second bearing (8) is in interference fit with the transmission piece (6);
a power output member (7), the power output member (7) being connected to the transmission member (6);
a pre-tightening piece (4), wherein the pre-tightening piece (4) is arranged between the outer ring of the first bearing (3) and the transmission piece (6);
and the limiting piece (9) is arranged at one end, far away from the first bearing (3), of the second bearing (8).
2. The transmission mounting structure according to claim 1, characterized in that the transmission (6) comprises a first bearing chamber for mounting the first bearing (3) and a second bearing chamber for mounting the second bearing (8), the first bearing chamber and the second bearing chamber being of the same basic size and different tolerances in diameter; and/or the number of the groups of groups,
the support shaft (2) comprises a first bearing mounting section for mounting a first bearing (3) and a second bearing mounting section for mounting a second bearing (8), the first bearing mounting section being identical in basic dimensions and different in tolerance from the second bearing mounting section in terms of the shaft diameter.
3. The transmission mounting structure according to claim 2, characterized in that the first bearing (3) and/or the second bearing (8) are rolling bearings.
4. A transmission mounting arrangement according to claim 3, characterized in that the first bearing (3) and the second bearing (8) are deep groove ball bearings, the radial play of the first bearing (3) and the second bearing (8) being 15-20 micrometers.
5. A transmission mounting arrangement according to claim 2, characterized in that the first bearing chamber and the second bearing chamber are transited by a step, at which the pretensioning member (4) is arranged.
6. A transmission mounting arrangement according to claim 1, characterized in that the pretensioning member (4) is of a washer construction.
7. The transmission mounting structure of claim 6, wherein the washer is a wave washer.
8. A transmission mounting arrangement according to claim 1, characterized in that the stop member (9) is a circlip.
9. A household appliance, characterized in that it comprises a motor, a rolling element and a transmission element mounting structure according to any one of claims 1-8, the rotor shaft of the motor being connected to the power input element (5), the power output element (7) being connected to the rolling element.
10. Household appliance according to claim 9, characterized in that it is a washing machine or dryer, the power input (5) and the power output (7) being of belt construction, the rolling element being a drum of the washing machine or dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517580.5A CN107131286B (en) | 2017-06-29 | 2017-06-29 | Driving part mounting structure and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517580.5A CN107131286B (en) | 2017-06-29 | 2017-06-29 | Driving part mounting structure and household appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107131286A CN107131286A (en) | 2017-09-05 |
| CN107131286B true CN107131286B (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710517580.5A Active CN107131286B (en) | 2017-06-29 | 2017-06-29 | Driving part mounting structure and household appliance |
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| CN (1) | CN107131286B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109290120A (en) * | 2018-10-25 | 2019-02-01 | 江苏大族展宇新能源科技有限公司 | A kind of lithium battery coating machine guide rolls support structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001032910A (en) * | 1999-07-19 | 2001-02-06 | Nsk Ltd | Pulley device for alternator with built-in one-way clutch |
| CN203411835U (en) * | 2013-06-14 | 2014-01-29 | 无锡小天鹅股份有限公司 | Secondary transmission for clothing dryer motors |
| CN104218721A (en) * | 2013-09-13 | 2014-12-17 | 黄河科技学院 | High-impact-resistant overload motor |
| CN105624965B (en) * | 2014-10-30 | 2019-07-23 | 青岛海尔洗衣机有限公司 | A kind of wash mill |
| CN205479193U (en) * | 2016-04-18 | 2016-08-17 | 广西真龙实业有限责任公司 | Cutting machine transmission |
| CN206023437U (en) * | 2016-08-29 | 2017-03-15 | 北京超同步伺服股份有限公司 | Pre-pressing structure for motor axial restraint |
| CN206830768U (en) * | 2017-06-29 | 2018-01-02 | 佛山市威灵洗涤电机制造有限公司 | Driving member mounting structure and household electrical appliance |
| KR102549141B1 (en) * | 2018-02-23 | 2023-06-30 | 삼성전자주식회사 | Clothes dryer and method of manufacturing clothes dryer |
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