CN201218109Y

CN201218109Y - Pneumatic motor capable of preventing bearing oil leakage

Info

Publication number: CN201218109Y
Application number: CNU2008200075169U
Authority: CN
Inventors: 洪倍钦
Original assignee: Soartec Industrial Corp
Current assignee: Soartec Industrial Corp
Priority date: 2008-04-03
Filing date: 2008-04-03
Publication date: 2009-04-08
Anticipated expiration: 2018-04-03

Abstract

A pneumatic motor capable of preventing oil leakage of bearing comprises a cylinder, a rotor and a transmission shaft, the cylinder comprises a cylinder body, a first cylinder cover and a second cylinder cover, the first cylinder cover is covered at one end of the cylinder body and is provided with a first bearing seat, a first bearing and a first baffle, the first bearing is arranged in the first bearing seat and is provided with an annular gap for containing lubricating grease, the first baffle is annular and is arranged between the first bearing seat and the first bearing and covers the annular gap of the first bearing in a surrounding way, the second cylinder cover is arranged at the other end of the cylinder body, the rotor is rotatably arranged in the cylinder body, the transmission shaft is arranged in the rotor in a penetrating way and combined with the first bearing, and because the gas exhausted by the cylinder is blocked by the blocking sheet, therefore, the gas can not blow out the lubricating grease in the bearing, and the lubricating grease leakage of the bearing can be prevented.

Description

Can prevent the pneumatic motor of bearing leakage of oil

Technical field

The utility model refers to a kind of pneumatic motor that prevents the bearing leakage of oil especially about a kind of pneumatic motor, and it can improve the working life of bearing and motor.

Background technique

General pneumatic tool comprises pneumatic lapper, pneumatic screw driver or pneumatic wrench, and it is to use pneumatic motor as power resources.Please refer to shown in Figure 3, with an existing pneumatic lapper is example, it includes a lapping machine body 60 and a movable vane pneumatic motor, this movable vane pneumatic motor is arranged in this lapping machine body 60, it comprises a cylinder 70, one rotor 80 and a transmission shaft 90, this cylinder 70 comprises a cylinder body 71, one first cylinder head 72 and one second cylinder head 73, this cylinder body 71 is formed with a containing space, this is first years old, two

cylinder heads

72,73 cover at the two ends of cylinder body 71, and be respectively equipped with a bearing support 731 and and be arranged at bearing 721 in the bearing support 731,732, this rotor 80 has plural blade 81, and this transmission shaft 90 is arranged in this rotor 80 and is eccentric in conjunction with an abrasive disk 91.

This existing pneumatic lapper is to utilize external feed stream to promote the blade 81 of rotor 80, and makes rotor 80 rotate these transmission shafts 90, and then makes abrasive disk 91 eccentric rotations and can carry out grinding work.Yet, also may pass through bearing 721,731 when discharging by cylinder body 71 owing to gas, therefore also the lubricant grease in the bearing 721,731 can be blown out the phenomenon that causes the grease leakage.When bearing 721731 inside lacked grease lubrication, then bearing 721,731 wore and tore and the working life that seriously detracts easily, also caused the durability of whole pneumatic motor to descend.

Summary of the invention

, causes by the bearing of existing pneumatic motor the phenomenon of lubricant grease leakage because being subjected to the influence of external feed stream easily, cause descend the working life of bearing, main purpose of the present utility model is to provide a kind of pneumatic motor that prevents the bearing leakage of oil, and it can avoid the bearing leakage of oil and working life of improving bearing and motor.

For reaching the above object, the pneumatic motor of bearing leakage of oil that prevents of the present utility model comprises:

One cylinder, it includes a cylinder body, one first cylinder head and one second cylinder head, this cylinder body has a containing space, this steam-cylinder lower cover first cylinder head cover is located at an end of cylinder body, and has a clutch shaft bearing seat, one clutch shaft bearing and one first catch, this clutch shaft bearing is arranged in this clutch shaft bearing seat, this clutch shaft bearing has an inner ring and an outer ring around this inner ring, be formed with an annular space that accommodates lubricant grease between this inner ring and outer ring, this first catch is annular and is arranged between this clutch shaft bearing seat and this clutch shaft bearing, and on the annular space that is covered in this clutch shaft bearing, this second cylinder head cover is located at the other end of this cylinder body.

One rotor, it is arranged in the containing space of this cylinder body rotationally, and its outer circumferential face is provided with plural blade; And

One transmission shaft, this transmission shaft are arranged in this rotor and with this clutch shaft bearing and combine.

Preferably, this second cylinder head has one second bearing support, one second bearing and one second catch, this second bearing is arranged in this second bearing support and with this transmission shaft and combines, this second bearing has an inner ring and an outer ring around this inner ring, be formed with an annular space that accommodates lubricant grease between this inner ring and outer ring, this second catch is annular and is arranged between this second bearing support and this second bearing, and on the annular space that is covered in this second bearing, and transmission shaft also combines with this second bearing.

Preferably, this transmission shaft is further eccentric in conjunction with an abrasive disk.

Because the utility model is provided with catch between each bearing support and corresponding bearing, therefore after external feed stream enters cylinder internal promotion rotor, the gas that cylinder is discharged is subjected to the obstruct of catch and can not enters the gap of each bearing, therefore gas can not blow out the lubricant grease of bearing inside, therefore the utlity model has the concrete effect of the lubricant grease leakage that can prevent bearing, so bearing can keep the lubricated of height and keep its working life, and then keeps the durability of pneumatic motor.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the utility model preferred embodiment;

Fig. 2 is the part sectioned view of the utility model preferred embodiment; And

Fig. 3 is the three-dimensional exploded view of existing pneumatic motor.

Embodiment

Please refer to Fig. 1 and shown in Figure 2, preferred embodiment of the present utility model comprises a cylinder 10, one rotor 20 and a transmission shaft 30, this cylinder 10 includes a cylinder body 11, one first cylinder head 12 and one second cylinder head 13, this cylinder body 11 is formed with a containing space, this first cylinder head 12 covers at an end of cylinder body 11, and has a clutch shaft bearing seat 121, one clutch shaft bearing 122 and one first catch 123, this clutch shaft bearing 122 is arranged in this clutch shaft bearing seat 121, this clutch shaft bearing 122 has an inner ring 1221 and an outer ring 1222 around this

inner ring

1221,1222 of this inner ring 1221 and outer rings are formed with an annular space that accommodates lubricant grease, this first catch 123 is for annular and be arranged at this clutch shaft bearing seat 121 and 122 of this clutch shaft bearings, and on the annular space that is covered in this clutch shaft bearing 122, this second cylinder head 13 covers at the other end of cylinder body 11;

In this preferred embodiment, this second cylinder head 13 has one second bearing support 131 and one second bearing 132, this second bearing 132 is arranged in this second bearing support 131, this second bearing 132 has an inner ring 1321 and an outer ring 1322 around this

inner ring

1321,1322 of this inner ring 1321 and outer rings are formed with an annular space that accommodates lubricant grease, this second cylinder head 13 further has one second catch 133, this second catch 133 is for annular and be arranged at this

second bearing support

131 and 132 on this second bearing, and around on the annular space that is covered in this second bearing 132;

This rotor 20 is arranged in the containing space of this cylinder body 11 rotationally, and its outer circumferential face is provided with plural blade 21, and this transmission shaft 30 is arranged in this rotor 20, and combines with this first and second bearing 122132; In this preferred embodiment, this transmission shaft 30 can be further eccentric in conjunction with an abrasive disk 31, and this preferred embodiment be can be applicable on the pneumatic lapper.

When external feed stream enters cylinder body 11 and when promoting the blade 21 of rotor 20, this rotor 20 drives transmission shaft 30 rotations, and when gas is discharged by cylinder body 11, because the gap of each bearing 122,132 is 123,133 coverings of corresponding catch, therefore gas promptly can't enter in the gap of each bearing 122,132, and then prevent that the lubricant grease in the gap from being blown out by gas, avoid bearing 122,132 to produce the phenomenon of leakage of oil.Therefore, the rotation of bearing 122,132 can be kept the lubricated of height and be unlikely the serious wearing and tearing of generation, can prolong the working life of bearing 122,132, and then keep the durability of pneumatic motor.

Preferred embodiment of the present utility model is not limited to be applied on the pneumatic lapper, also can be applicable to any suitable pneumatic tool, comprises pneumatic screw driver and pneumatic wrench etc.

Claims

1. An air motor capable of preventing bearing oil leakage, characterized in that it comprises:

A cylinder, which includes a cylinder body, a first cylinder head and a second cylinder head, the cylinder body has an accommodating space, the first cylinder head cover is arranged at one end of the cylinder body, and has a first bearing seat 1. A first bearing and a first blocking piece, the first bearing is arranged in the first bearing housing, the first bearing has an inner ring and an outer ring surrounding the inner ring, the gap between the inner ring and the outer ring An annular gap containing lubricating grease is formed, the first blocking plate is annular and is arranged between the first bearing seat and the first bearing, and surrounds and covers the annular gap of the first bearing, the second cylinder head The cover is arranged on the other end of the cylinder body;

a rotor, which is rotatably arranged in the accommodating space of the cylinder body, and has a plurality of blades on its outer peripheral surface; and

A transmission shaft is passed through the rotor and combined with the first bearing.

2. The air motor capable of preventing bearing oil leakage as claimed in claim 1, wherein the second cylinder head has a second bearing seat, a second bearing and a second baffle, and the second bearing is provided with In the second bearing seat, the second bearing has an inner ring and an outer ring surrounding the inner ring, an annular gap containing lubricating grease is formed between the inner ring and the outer ring, and the second blocking piece is annular It is arranged between the second bearing seat and the second bearing, and surrounds and covers the annular gap of the second bearing, and the transmission shaft is also combined with the second bearing.

3. The air motor capable of preventing bearing oil leakage according to claim 1 or 2, characterized in that: the transmission shaft is further eccentrically combined with a grinding disc.