CN102207140A

CN102207140A - Bearing

Info

Publication number: CN102207140A
Application number: CN2010101346140A
Authority: CN
Inventors: 李昇军; 许寿国; 陈永杰; 梁献全; 严欣亭; 赵泓
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2010-03-29
Filing date: 2010-03-29
Publication date: 2011-10-05

Abstract

The invention relates to a bearing. The bearing comprises a body provided with an axle hole, a clutch block arranged on the body, a first magnet and a second magnet, wherein the body is axially provided with a first accommodating part and a second accommodating part which are adjacent to each other; the second accommodating part is provided with an opening communicated with the axle hole; the first magnet is arranged in the first accommodating part; the second magnet and the clutch block are arranged in the second accommodating part; and repulsive force is generated between the first magnet and the second magnet, so that a part of the clutch block stretches into the axle hole from the opening of the second accommodating part. The bearing has the advantage that the bearing can be miniaturized.

Description

Bearing

Technical field

The present invention relates to a kind of bearing, relate in particular to a kind of bearing with clutch block.

Background technique

See also Fig. 1, a kind of bearing 10, it comprises body 11 and is sheathed on the body 11 and the Runner assembly 12 of fixedlying connected with body 11 that the center of this body offers axis hole (figure is mark not), transmission shaft 13 is arranged in this axis hole.Offer three loose slots 112 that equidistantly distribute on the sidewall of axis hole, further offer the through hole 113 that runs through body 11 on the sidewall of loose slot 112.Clutch block 114 is arranged at this loose slot, and spring 115 is arranged in the through hole 113, and the two ends of spring 115 are connected with wedge-shaped blocks 116 and sleeve pipe 117 respectively.Sleeve pipe 117 is held in clutch block 114 sidewall of loose slot 112 under the elastic force effect of spring 115.When body 11 was followed Runner assembly 12 rotations, clutch block 114 can produce frictional force with transmission shaft 13, thereby drove transmission shaft 13 rotations.

Yet, above-mentioned bearing 10 need body 11 spring 115, wedge-shaped blocks 116, sleeve pipe 117 and clutch block 114 these elements radially are set, so the body 11 of bearing 10 has bigger radial dimension usually, be difficult to realize the miniaturization of bearing.

Summary of the invention

In view of above-mentioned condition, be necessary to provide a kind of bearing of Miniaturizable.

A kind of bearing, it comprises the body that offers axis hole and is arranged at clutch block on the body, bearing also comprises first magnet and second magnet, body offers the first adjacent accommodating part and second accommodating part vertically, second accommodating part is formed with the opening that communicates with axis hole, and first magnet is arranged at first accommodating part, and second magnet and clutch block are arranged at second accommodating part, produce repulsion between first magnet and second magnet, so that clutch block partly stretches in the axis hole from the opening of second accommodating part.

Because first accommodating part and second accommodating part axially the offering of bearing along body, and first magnet, second magnet and clutch block are arranged at respectively in first accommodating part and second accommodating part, clutch block and transmission shaft can keep in touch generation frictional force by the repulsion between first magnet and second magnet, and needn't elastic element radially be set, thereby make the bearing Miniaturizable along it.

Description of drawings

Fig. 1 is a kind of three-dimensional exploded view of bearing.

Fig. 2 is the schematic perspective view of the bearing of the embodiment of the invention.

Fig. 3 is the three-dimensional exploded view that bearing shown in Figure 2 does not comprise fixed block.

Fig. 4 is a bearing shown in Figure 2 and schematic perspective view after transmission shaft cooperates.

Fig. 5 is the bearing of Fig. 4 and the transmission shaft sectional view along the V-V line.

The primary component symbol description

Bearing

30

Body	31
		First magnet	32
Second magnet	33
		Clutch block	34
Gear	35
		Fixed block	36
Axis hole	311
		First accommodating part	312
Second accommodating part	313
		Opening	314
Fixed hole	315
		Attachment hole	351

Embodiment

Below in conjunction with drawings and Examples bearing of the present invention is described in further detail.

See also Fig. 2 and Fig. 3, the embodiment of the invention provides a kind of bearing 30, and it comprises body 31, be arranged at first magnet 32 on the body, second magnet 33, clutch block 34, two gears 35 and a plurality of fixed blocks 36.

Body 31 is cylindric, and its center offers circular axis hole 311.Body 31 axially offers adjacent first accommodating part 312 and second accommodating part 313 of many groups along it, and second accommodating part 313 is formed with the opening 314 that communicates with axis hole 311.The size of second accommodating part 313 is greater than first accommodating part 312.In the present embodiment, body 31 equidistantly offers the six groups of first adjacent accommodating parts 312 and second accommodating part 313 along its circumferencial direction.Body 31 also offers fixed hole 315 between the many groups of first adjacent accommodating parts 312 and second accommodating part 313.

First magnet 32 and second magnet 33 are strip, have the N utmost point (arctic) and the S utmost point (South Pole).Clutch block 34 is cylindric.First magnet 32 is arranged at first accommodating part 312, and for closely cooperating.Second magnet 33 be arranged in second accommodating part 313 after clutch block 34 is connected, and clutch block 34 is formed with an end of opening 314 near second accommodating parts 313.Behind pack into second magnet 33 and clutch block 34, second accommodating part 313 still has certain holding space.The N utmost point of first magnet 32 and the extremely corresponding placement of the N of second magnet 33, the S utmost point of first magnet 32 and the extremely corresponding placement of the S of second magnet 33.At this moment, will produce repulsion between first magnet 32 and second magnet 33, stretch in the axis hole 311 from the opening 314 of second accommodating part 313 thereby order about clutch block 34 parts.In the present embodiment, first magnet 32 and second magnet 33 are electromagnet.

All offer attachment hole 351 on two gears 35, fixed block 36 passes the fixed hole 315 that snaps in behind the attachment hole 351 of gear 35 on the body 31, two gears 35 are individually fixed in the two ends of body 31.

See also Fig. 3 to Fig. 5, when using bearing 30, transmission shaft 50 is arranged in the axis hole 311 of bearing 30, the part that clutch block 34 stretches into axis hole 311 offsets with transmission shaft 50, when the power plant (figure does not show) of outside drive bearing 30 rotations by gear 35, to produce frictional force between clutch block 34 and the transmission shaft 50, thereby drive transmission shaft 50 rotations.

Because first accommodating part 312 and second accommodating part 313 of bearing 30 are axially offering along body 31, and first magnet 32, second magnet 33 and clutch block 34 are arranged at respectively in first accommodating part 312 and second accommodating part 313, clutch block 34 and transmission shaft 50 can keep in touch generation frictional force by the repulsion between first magnet 32 and second magnet 33, and needn't elastic element radially be set, thereby make bearing 30 Miniaturizables along it.And the repulsion between first magnet 32 and second magnet 33 can keep stable for a long time, can elastic fatigue not occur after long-term the use as elastic element, thereby make bearing 30 have long working life.

In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.

Claims

1. bearing, it comprises the body that offers axis hole and is arranged at clutch block on the body, it is characterized in that: described bearing also comprises first magnet and second magnet, described body offers the first adjacent accommodating part and second accommodating part vertically, described second accommodating part is formed with the opening that communicates with axis hole, described first magnet is arranged at first accommodating part, described second magnet and clutch block are arranged at second accommodating part, produce repulsion between described first magnet and second magnet, so that clutch block partly stretches in the axis hole from the opening of second accommodating part.

2. bearing as claimed in claim 1 is characterized in that: described first magnet and second magnet are electromagnet.

3. bearing as claimed in claim 2 is characterized in that: described first magnet and second magnet are strip.

4. bearing as claimed in claim 1 is characterized in that: the corresponding placement with the arctic of second magnet in the arctic of described first magnet, the corresponding placement with the South Pole of second magnet in the South Pole of first magnet.

5. bearing as claimed in claim 1 is characterized in that: described bearing also comprises two gears, and described two gears are individually fixed in the both sides of body.

6. bearing as claimed in claim 5 is characterized in that: described bearing also comprises fixed block, offers fixed hole on the described body, offers attachment hole on the described gear, and described fixed block passes the attachment hole of gear and snaps in the fixed hole of body.

7. bearing as claimed in claim 1 is characterized in that: described clutch block is cylindrical.

8. bearing as claimed in claim 1 is characterized in that: the holding space of described second accommodating part is greater than the volume of second magnet and clutch block.

9. bearing as claimed in claim 8 is characterized in that: described clutch block is arranged at an end that is formed with opening near second accommodating part.

10. bearing as claimed in claim 1 is characterized in that: described body equidistantly offers adjacent first accommodating part and second accommodating part of many groups.