CN2794415Y - Belt tensioning support device for central vacuum cleaner head - Google Patents
Belt tensioning support device for central vacuum cleaner head Download PDFInfo
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- CN2794415Y CN2794415Y CN 200520058301 CN200520058301U CN2794415Y CN 2794415 Y CN2794415 Y CN 2794415Y CN 200520058301 CN200520058301 CN 200520058301 CN 200520058301 U CN200520058301 U CN 200520058301U CN 2794415 Y CN2794415 Y CN 2794415Y
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- bearing
- ball
- inner sleeve
- outside
- bearing inner
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Abstract
The utility model discloses a belt tension and support device for a central cleaner head. The utility model comprises at least one ball bearing which is arranged on a support shaft, each ball bearing is composed of an inner sleeve of a bearing, a ball, a dustproof cover and an outer sleeve of the bearing, and the inner sleeve of a bearing and the support shaft have an interference fit. The structure can reduce manufacture cost and whole price, the entering of dust is reduced, the bearing can be prevented from damaging, and the service life of the utility model is prolonged.
Description
Technical field
The utility model relates to a kind of belt tension bracing or strutting arrangement of cleaner head of central dust extractor.
Background technology
At present, the belt tension bracing or strutting arrangement of the cleaner head of central dust extractor is made up of needle bearing and back shaft, and needle bearing is installed on the back shaft, and the structure of needle bearing is a prior art, is made up of retainer, needle roller, overcoat and dust cover, does not do at this and gives unnecessary details.
This needle-type bracing or strutting arrangement, the processing cost height of needle bearing itself not only, and, overall structure is also high to the quality requirement of needle bearing, need select the good needle bearing of quality for use, causes overall price higher, in addition, for movingly, leave certain clearance between needle bearing and the back shaft, dust gap very easily thus enters needle bearing, and the lubricating oil in dust and the needle bearing is bonding, have a strong impact on normally carrying out of rotation, even cause the damage of needle roller, service life is short.
The utility model content
The purpose of this utility model is to provide a kind of belt tension bracing or strutting arrangement of cleaner head of central dust extractor, to cut down finished cost and overall price, reduces dust and enters, and prevents that bearing is impaired, increases the service life.
For reaching above-mentioned purpose, solution of the present utility model is:
The belt tension bracing or strutting arrangement of the cleaner head of central dust extractor, comprise at least one ball bearing, ball bearing is installed on the back shaft, and each ball bearing is made up of bearing inner sleeve, ball, dust cover and bearing outside, is interference fit between bearing inner sleeve and the back shaft.
Above-mentioned belt tension bracing or strutting arrangement comprises four common ball bearings, each ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the short tube shape, form a pearl groove between the outer wall of bearing inner sleeve and the inwall of bearing outside, ball is arranged in this pearl groove just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, four ball bearings are installed on the back shaft side by side, and corresponding four outmost two faces of ball bearing are provided with shaft block ring on the back shaft, are interference fit between the bearing inner sleeve of ball bearing and the back shaft.
Above-mentioned belt tension bracing or strutting arrangement comprises two common ball bearings, a separation sleeve and an overcoat, each ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the short tube shape, form a pearl groove between the outer wall of bearing inner sleeve and the inwall of bearing outside, ball is arranged in this pearl groove just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, two ball bearings are installed on the back shaft, separation sleeve is arranged between two ball bearings, outside two ball bearings and separation sleeve, also be with overcoat, and the two ends of overcoat are bent to form the riveting limit slightly to the center, this riveting limit keeps off on two outmost two faces of ball bearing just, make two ball bearings and separation sleeve limited and be in the overcoat, being interference fit between the bearing inner sleeve of ball bearing and the back shaft, also is interference fit between the bearing outside of ball bearing and the overcoat.
Above-mentioned belt tension bracing or strutting arrangement comprises two common ball bearings, a separation sleeve and an overcoat, each ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the short tube shape, form a pearl groove between the outer wall of bearing inner sleeve and the inwall of bearing outside, ball is arranged in this pearl groove just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, two ball bearings are installed on the back shaft, separation sleeve is arranged between two ball bearings, outside two ball bearings and separation sleeve, also be with overcoat, and corresponding two outmost two faces of ball bearing in the two ends of overcoat are provided with the hole back-up ring, just make two ball bearings and separation sleeve limited and be in the overcoat by this hole with back-up ring, being interference fit between the bearing inner sleeve of ball bearing and the back shaft, also is interference fit between the bearing outside of ball bearing and the overcoat.
Above-mentioned belt tension bracing or strutting arrangement comprises a special elongated ball bearing, ball bearing is installed on the back shaft, this ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the elongated tubes shell-like, the corresponding groove that forms on the outer wall two ends of bearing inner sleeve and the inwall two ends of bearing outside, between the inwall of the outer wall of bearing inner sleeve and bearing outside, form two pearl grooves thus, ball is arranged in two pearl grooves just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, the inwall stage casing depression of bearing inner sleeve also forms inside groove, is interference fit between the inwall two ends of bearing inner sleeve and the back shaft.
After adopting said structure, the utility model is selected ball bearing for use, ball bearing is compared with needle bearing, under identical precision requirement, the processing cost of ball bearing is lower, and overall structure is low to the quality requirement of ball bearing, ball bearing that can special elongated, more can select the common ball bearing of quality for use, cause overall price also low, in addition, because between bearing and the back shaft is tight fit, very close to each other, so dust is difficult for entering in the bearing, prevented that effectively bearing is impaired, prolonged service life.
Description of drawings
Fig. 1 is the structure schematic diagram of a kind of embodiment of the utility model;
Fig. 2 is the utility model structure schematic diagram of an embodiment again;
Fig. 3 is the structure schematic diagram of the another embodiment of the utility model;
Fig. 4 is the structure schematic diagram of another embodiment of the utility model.
The specific embodiment
The utility model has disclosed the belt tension bracing or strutting arrangement of the cleaner head of central dust extractor, comprise at least one ball bearing 1, ball bearing 1 is installed on the back shaft 4, each ball bearing 1 is made up of bearing inner sleeve, ball, dust cover and bearing outside, is interference fit between bearing inner sleeve and the back shaft 4.Like this, the utility model is owing to select for use ball bearing 1 to replace needle bearing of the prior art, processing cost is low, and, overall structure is low to the quality requirement of ball bearing 1, can select the ball bearing or the common ball bearing of quality of special specification for use, cause overall price also low, in addition, owing to be tight fit between ball bearing 1 and the back shaft 4, very close to each other, ball bearing 1 can be selected the ball bearing product with two-sided dust cover for use, so dust is difficult for entering in the bearing, prevented that effectively bearing is impaired, prolonged service life.
Seeing also shown in Figure 1ly, is a kind of preferred embodiment of the present utility model, comprises two common ball bearings 1, a separation sleeve 2 and an overcoat 3.Each ball bearing 1 is made up of bearing inner sleeve, ball, dust cover and bearing outside, bearing inner sleeve and bearing outside all are the short tube shape, form a pearl groove between the outer wall of bearing inner sleeve and the inwall of bearing outside, ball is arranged in the pearl groove just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, because ball bearing 1 is common ball bearing, its structure is a prior art, so not shown.Two ball bearings 1 are installed on the back shaft 4, separation sleeve 2 is arranged between two ball bearings 1, overcoat 3 is enclosed within outside two ball bearings 1 and the separation sleeve 2, and the two ends of overcoat 3 bend a riveting limit 31 slightly to the center, this riveting limit 31 retaining just is limited in the overcoat 3 two ball bearings 1 and a separation sleeve 2 on two ball bearings, 1 outmost two faces.Still being interference fit between the bearing inner sleeve of each ball bearing 1 and the back shaft 4 among this embodiment, also is interference fit between bearing outside and the overcoat 3.
Seeing also shown in Figure 2ly again, is another preferred embodiment of the present utility model, comprises two common ball bearings 1, a separation sleeve 2 and an overcoat 3.Each ball bearing 1 is made up of bearing inner sleeve, ball, dust cover and bearing outside, and this ball bearing 1 is the same with the ball bearing among the aforementioned embodiment 1, all is common ball bearing, and its structure is a prior art, so not shown.Two ball bearings 1 are installed on the back shaft 4, separation sleeve 2 is arranged between two ball bearings 1, overcoat 3 is enclosed within outside two ball bearings 1 and the separation sleeve 2, and corresponding two ball bearing 1 outmost two faces in the two ends of overcoat 3 are provided with the hole with back-up ring 5, just make two ball bearings 1 and separation sleeve 2 limited and be in the overcoat 3 by this hole with back-up ring 5.Still being interference fit between the bearing inner sleeve of each ball bearing 1 and the back shaft 4, also is interference fit between bearing outside and the overcoat 3.This embodiment only is that with the difference of previous embodiment two ball bearings 1 are different with the position limiting structure of a separation sleeve 2 in overcoat 3, and that actual spacing mode also is not limited only to this paper is listed.
Seeing also shown in Figure 3ly again, is another preferred embodiment of the present utility model, comprises four common ball bearings 1, and the number of ball bearing 1 can be decided as required.Each ball bearing 1 is made up of bearing inner sleeve, ball, dust cover and bearing outside, and this ball bearing 1 is the same with the ball bearing 1 among aforementioned two embodiment, all is common ball bearing, and its structure is a prior art, so not shown.Four ball bearings 1 are installed on the back shaft 4 side by side, and corresponding four ball bearing 1 outmost two faces are provided with shaft block ring 5 on the back shaft 4, are interference fit between the bearing inner sleeve of ball bearing 1 and the back shaft 4.This embodiment has and aforementioned two effects that embodiment is identical.
Other sees also shown in Figure 4, it is another kind of preferred embodiment of the present utility model, comprise a special elongated ball bearing 1, ball bearing 1 is installed on the back shaft 4, this ball bearing 1 is by bearing inner sleeve 11, ball 12, dust cover 13 and bearing outside 14 are formed, bearing inner sleeve 11 and bearing outside 14 all are the elongated tubes shell-like, the corresponding groove that forms on the outer wall two ends of bearing inner sleeve 11 and the inwall two ends of bearing outside 14, between the inwall of the outer wall of bearing inner sleeve 11 and bearing outside 14, form two pearl grooves thus, ball 12 is arranged in two pearl grooves just, dust cover 13 fixed covers are on two end faces of bearing inner sleeve 11 and bearing outside 14 fit clearances, the inwall stage casing depression of bearing inner sleeve 11 also forms inside groove 111, be interference fit between the inwall two ends of bearing inner sleeve 11 and the back shaft 4, wherein inside groove 111 can reduce the inwall of bearing inner sleeve 11 and the contact-making surface of back shaft 4, more closely cooperates between the inwall two ends that make bearing inner sleeve 11 and the back shaft 4.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, therefore, all technical schemes that are equal to also should belong to the category of this case.
Claims (5)
1, the belt tension bracing or strutting arrangement of the cleaner head of central dust extractor, it is characterized in that: comprise at least one ball bearing, ball bearing is installed on the back shaft, and each ball bearing is made up of bearing inner sleeve, ball, dust cover and bearing outside, is interference fit between bearing inner sleeve and the back shaft.
2, the belt tension bracing or strutting arrangement of the cleaner head of central dust extractor according to claim 1, it is characterized in that: the belt tension bracing or strutting arrangement comprises four ball bearings, each ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the short tube shape, form a pearl groove between the outer wall of bearing inner sleeve and the inwall of bearing outside, ball is arranged in this pearl groove just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, four ball bearings are installed on the back shaft side by side, and corresponding four outmost two faces of ball bearing are provided with shaft block ring on the back shaft, are interference fit between the bearing inner sleeve of ball bearing and the back shaft.
3, the belt tension bracing or strutting arrangement of the cleaner head of central dust extractor according to claim 1, it is characterized in that: the belt tension bracing or strutting arrangement comprises two ball bearings, a separation sleeve and an overcoat, each ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the short tube shape, form a pearl groove between the outer wall of bearing inner sleeve and the inwall of bearing outside, ball is arranged in this pearl groove just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, two ball bearings are installed on the back shaft, separation sleeve is arranged between two ball bearings, outside two ball bearings and separation sleeve, also be with overcoat, and the two ends of overcoat are bent to form the riveting limit slightly to the center, this riveting limit keeps off on two outmost two faces of ball bearing just, make two ball bearings and separation sleeve limited and be in the overcoat, being interference fit between the bearing inner sleeve of ball bearing and the back shaft, also is interference fit between the bearing outside of ball bearing and the overcoat.
4, the belt tension bracing or strutting arrangement of the cleaner head of central dust extractor according to claim 1, it is characterized in that: the belt tension bracing or strutting arrangement comprises two ball bearings, a separation sleeve and an overcoat, each ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the short tube shape, form a pearl groove between the outer wall of bearing inner sleeve and the inwall of bearing outside, ball is arranged in this pearl groove just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, two ball bearings are installed on the back shaft, separation sleeve is arranged between two ball bearings, outside two ball bearings and separation sleeve, also be with overcoat, and corresponding two outmost two faces of ball bearing in the two ends of overcoat are provided with the hole back-up ring, just make two ball bearings and separation sleeve limited and be in the overcoat by this hole with back-up ring, being interference fit between the bearing inner sleeve of ball bearing and the back shaft, also is interference fit between the bearing outside of ball bearing and the overcoat.
5, the belt tension bracing or strutting arrangement of the cleaner head of central dust extractor according to claim 1, it is characterized in that: the belt tension bracing or strutting arrangement comprises an elongated ball bearing, ball bearing is installed on the back shaft, this ball bearing is by bearing inner sleeve, ball, dust cover and bearing outside are formed, bearing inner sleeve and bearing outside all are the elongated tubes shell-like, the corresponding groove that forms on the outer wall two ends of bearing inner sleeve and the inwall two ends of bearing outside, between the inwall of the outer wall of bearing inner sleeve and bearing outside, form two pearl grooves thus, ball is arranged in two pearl grooves just, the dust cover fixed cover is on two end faces of bearing inner sleeve and bearing outside fit clearance, the inwall stage casing depression of bearing inner sleeve also forms inside groove, is interference fit between the inwall two ends of bearing inner sleeve and the back shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058301 CN2794415Y (en) | 2005-05-11 | 2005-05-11 | Belt tensioning support device for central vacuum cleaner head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058301 CN2794415Y (en) | 2005-05-11 | 2005-05-11 | Belt tensioning support device for central vacuum cleaner head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2794415Y true CN2794415Y (en) | 2006-07-12 |
Family
ID=36812181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520058301 Expired - Fee Related CN2794415Y (en) | 2005-05-11 | 2005-05-11 | Belt tensioning support device for central vacuum cleaner head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2794415Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102987982A (en) * | 2011-09-07 | 2013-03-27 | 碧洁家庭护理有限公司 | Vacuum cleaner with belt drive disengager |
-
2005
- 2005-05-11 CN CN 200520058301 patent/CN2794415Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102987982A (en) * | 2011-09-07 | 2013-03-27 | 碧洁家庭护理有限公司 | Vacuum cleaner with belt drive disengager |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060712 Termination date: 20110511 |