Motor with oil-proof sheath

Abstract

The utility model relates to the technical field of motors, and discloses a motor with an oil-proof sheath, which comprises a motor shaft and a front cover, a boss is formed at the front end of the front cover, and a shaft hole for the motor shaft to pass through is formed in the boss; the front extending end, penetrating through the boss, of the motor shaft is sleeved with an oil-proof sheath and a pin shaft, and the pin shaft is located on the front side of the oil-proof sheath. By arranging the oil-proof sheath, oil at the front end of the motor shaft can be prevented from moving backwards, the oil-proof sheath rotates along with the motor shaft, and the oil on the oil-proof sheath can be thrown out under the action of centrifugal force, so that the oil is effectively prevented from entering the motor along the motor shaft, and the service life of the motor can be greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a kind of motor with oil-proof sheath. BACKGROUND

[0002] The range hood includes motor and impeller, impeller is fixed at the motor shaft end of motor, range hood due to working environment contains more oil fume and air driven by impeller is generally axial flow, oil accumulated on motor shaft moves back along motor shaft and enters into motor interior through motor shaft hole on front cover, so that motor interior is contaminated, reduce the service life of motor, and there is greater security risk. SUMMARY

[0003] The utility model discloses a kind of motors with oil-proof sheath, by setting up oil-proof sheath can prevent oil in the front end of motor shaft from moving back, and oil-proof sheath rotates with motor shaft, oil on oil-proof sheath can be thrown out under the action of centrifugal force, so as to effectively prevent oil along motor shaft from entering into motor interior, can greatly improve the service life of motor.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] A kind of motor with oil-proof sheath, including motor shaft and front cover, the front end of front cover is shaped with boss, boss is shaped with the shaft hole for motor shaft to pass through;The front protruding end of motor shaft through boss is sleeved with oil-proof sheath and pin shaft, pin shaft is located at the front side of oil-proof sheath.

[0006] By pin shaft, oil-proof sheath can be prevented from sliding forward, and pin shaft also limits the installation position of impeller, pin shaft and motor shaft are transitionally matched;

[0007] When motor works, especially in the environment of oil fume, motor shaft drives impeller to rotate, more oil is easily accumulated on impeller and is transmitted to motor shaft, oil on motor shaft moves back under the influence of axial wind force, when oil on motor shaft meets oil-proof sheath, oil-proof sheath can prevent oil from continuing to move back along shaft, oil will be accumulated on oil-proof sheath, oil-proof sheath rotates with motor shaft, oil on oil-proof sheath is thrown to outside under the action of centrifugal force, so as to effectively prevent oil from entering into motor.

[0008] The utility model is further provided as follows: the oil-proof sheath includes integrally-formed taper sleeve and oil baffle, the middle part of the oil baffle is shaped with motor shaft hole, the motor shaft is inserted into the motor shaft hole;The taper sleeve is small in front and large in back;The boss is inserted into the taper sleeve;

[0009] The outer diameter of motor shaft is greater than the hole diameter of motor shaft hole.

[0010] The tapered sleeve can effectively protect the front end and outer wall area of ​​the boss, preventing excessive oil accumulation around the boss.

[0011] The present invention is further configured such that an extended sheath is formed on the rear end face of the motor shaft hole, and the inner diameter of the extended sheath is equal to the diameter of the motor shaft hole.

[0012] By adding an extended protective sleeve, the contact area between the oil-proof sleeve and the motor shaft can be increased, resulting in a better blocking effect.

[0013] The present invention is further configured such that the oil-proof sleeve is made of flame-retardant and corrosion-resistant rubber material, which can improve the service life of the oil-proof sleeve and increase safety.

[0014] The present invention is further configured such that: the front cover is fixed to the front end of the motor housing, and multiple support feet are formed on the outer wall of the motor housing, and "U"-shaped slots with outer openings are formed on the support feet, and rubber shock-absorbing sleeves are engaged in the U-shaped slots;

[0015] The rubber shock-absorbing sleeve is in the shape of an "I".

[0016] By installing rubber shock-absorbing sleeves on the support feet, the vibration of the motor during operation can be reduced, thereby reducing the vibration of the motor shaft to a certain extent and reducing the movement of oil on the motor shaft.

[0017] The outstanding effect of this utility model is:

[0018] Compared with existing technologies, by setting an oil-proof sleeve, the oil at the front end of the motor shaft can be prevented from moving backward. Moreover, the oil-proof sleeve rotates with the motor shaft, and the oil on the oil-proof sleeve can be thrown out by the centrifugal force, thereby effectively preventing oil from entering the motor along the motor shaft and significantly improving the service life of the motor. Attached Figure Description

[0019] Figure 1 This is the left view of the present invention;

[0020] Figure 2 This is a front view of the present invention;

[0021] Figure 3 for Figure 2 A sectional view of AA;

[0022] Figure 4 This is a schematic diagram of the structure of the protective oil sleeve of this utility model.

[0023] Attached label: 10, motor shaft;

[0024] 20. Front cover; 21. Motor housing; 22. Rubber shock absorber sleeve;

[0025] 201, boss; 202, shaft hole;

[0026] 211, foot; 212, "U" type clamping groove;

[0027] 30, oil-proof sheath; 31, pin shaft;

[0028] 301, taper sleeve; 302, oil baffle; 303, motor shaft hole; 304, lengthened sheath. DETAILED DESCRIPTION

[0029] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0030] The following references Figures 1 to 4 The utility model is explained as follows:

[0031] A motor provided with an oil-proof sheath, comprising a motor shaft 10 and a front cover 20, a boss 201 is formed at the front end of the front cover 20, and a shaft hole 202 for the motor shaft 10 to pass through is formed on the boss 201; the oil-proof sheath 30 and the pin shaft 31 are sleeved on the front protruding end of the boss 201 through which the motor shaft 10 passes, and the pin shaft 31 is located at the front side of the oil-proof sheath 30.

[0032] The pin shaft can prevent the oil-proof sheath from sliding forward, and the pin shaft also limits the installation position of the impeller, and the pin shaft and the motor shaft are transitionally matched;

[0033] When the motor works, especially in the environment of oil fume, the motor shaft drives the impeller to rotate, and more oil is easily accumulated on the impeller and transferred to the motor shaft, the oil on the motor shaft moves backward under the influence of axial wind force, when the oil on the motor shaft collides with the oil-proof sheath, the oil-proof sheath can prevent the oil from continuing to move backward along the shaft, and the oil is accumulated on the oil-proof sheath, the oil-proof sheath rotates with the motor shaft, and the oil on the oil-proof sheath is thrown to the outside under the action of centrifugal force, so that the oil is effectively prevented from entering the motor.

[0034] The oil-proof sheath 30 comprises an integrally formed taper sleeve 301 and an oil baffle 302, a motor shaft hole 303 is formed in the middle part of the oil baffle 302, and the motor shaft 10 is inserted into the motor shaft hole 303; the taper sleeve 301 is small in front and large at back; and the boss 201 extends into the taper sleeve 301.

[0035] The outer diameter of the motor shaft 10 is greater than the hole diameter of the motor shaft hole 303.

[0036] The taper sleeve inserted into the boss can effectively protect the front end and the outer wall area of the boss, and prevent too much oil accumulated around the boss.

[0037] An extended sheath 304 is formed on the rear end face of the motor shaft hole 303, and the inner diameter of the extended sheath 304 is equal to the diameter of the motor shaft hole 303.

[0038] By adding an extended protective sleeve, the contact area between the oil-proof sleeve and the motor shaft can be increased, resulting in a better blocking effect.

[0039] The oil-proof sleeve 30 is made of flame-retardant and corrosion-resistant rubber material, which can improve the service life of the oil-proof sleeve and increase safety.

[0040] The front cover 20 is fixed to the front end of the motor housing 21. Multiple support legs 211 are formed on the outer wall of the motor housing 21. The support legs 211 are formed with "U"-shaped slots 212 with outer openings. A rubber shock-absorbing sleeve 22 is engaged in the U-shaped slots 212.

[0041] The rubber shock absorber sleeve 22 is in the shape of an "I".

[0042] By installing rubber shock-absorbing sleeves on the support feet, the vibration of the motor during operation can be reduced, thereby reducing the vibration of the motor shaft to a certain extent and reducing the movement of oil on the motor shaft.

[0043] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. An electric machine provided with an oil-proof sheath, comprising an electric machine shaft (10) and a front cover (20), a boss (201) is formed at the front end of the front cover (20), and an axle hole (202) for the electric machine shaft (10) to pass through is formed on the boss (201); characterized in that: The motor shaft (10) is fitted with an oil-proof sleeve (30) and a pin (31) at the front protruding end of the boss (201), with the pin (31) located on the front side of the oil-proof sleeve (30).

2. An electric machine provided with an oil-proof sheath according to claim 1, characterized in that: The oil-proof sleeve (30) includes an integrally formed conical sleeve (301) and an oil baffle (302). The oil baffle (302) has a motor shaft hole (303) formed in the middle. The motor shaft (10) is inserted into the motor shaft hole (303). The conical sleeve (301) is set with a smaller front and a larger rear. The boss (201) extends into the conical sleeve (301). The outer diameter of the motor shaft (10) is larger than the diameter of the motor shaft hole (303).

3. An electric machine provided with an oil-proof sheath according to claim 2, characterized in that: An extended sleeve (304) is formed on the rear end face of the motor shaft hole (303), and the inner diameter of the extended sleeve (304) is equal to the diameter of the motor shaft hole (303).

4. An electric machine provided with an oil-proof sheath according to claim 2, characterized in that: The oil-proof sheath (30) is made of flame-retardant and corrosion-resistant rubber material.

5. An electric machine provided with an oil-proof sheath according to claim 1, characterized in that: The front cover (20) is fixed to the front end of the motor housing (21). Multiple support legs (211) are formed on the outer wall of the motor housing (21). A U-shaped slot (212) with an outer opening is formed on the support leg (211). A rubber shock-absorbing sleeve (22) is snapped into the U-shaped slot (212). The rubber shock absorber sleeve (22) is in the shape of an "I".

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