CN103746494A

CN103746494A - Sealing structure between motor shaft and motor cover

Info

Publication number: CN103746494A
Application number: CN201410010078.1A
Authority: CN
Inventors: 徐济高; 贾元振; 裘霖富; 徐祖平; 杨友生
Original assignee: SHAOXING MOTAI ELECTROMECHANICAL SCIENCE & TECHNOLOGY Co Ltd
Current assignee: SHAOXING MOTAI ELECTROMECHANICAL SCIENCE & TECHNOLOGY Co Ltd
Priority date: 2014-01-03
Filing date: 2014-01-03
Publication date: 2014-04-23
Anticipated expiration: 2034-01-03
Also published as: CN103746494B

Abstract

The invention discloses a sealing structure between a motor shaft and a motor cover. The sealing structure comprises the motor shaft (2) and the motor cover (1); the motor cover (1) is provided with a shaft hole (13) which is coaxial with a bearing (6) and used for one end of the motor shaft (2) to extend out. The sealing structure is characterized in that the upper surface of the motor cover (1) is a circular lug (11) coaxial with the shaft hole (13) through integral forming; a concave circular groove (12) facilitating the outflow of liquid is formed between the bottom of the annular lug (11) and the upper surface of the motor cover (1); a housing (3) used for blocking water covers the circular lug (11). The sealing structure has the advantages that when a motor is arranged laterally, water on the motor can flow out of the circular groove along the motor cover and cannot enter the shaft hole of the motor cover; when the motor is straightly arranged, the housing has a waterproof function; besides, a sealing ring is formed outside the shaft hole, and an elastic retainer ring is sleeved outside the sealing ring, so that the sealing ring can be closely fitted with the motor shaft, the sealing property between the motor shaft and the motor cover is further improved and the water is prevented from entering the motor.

Description

Hermetically-sealed construction between machine shaft and motor cover

Technical field

The invention belongs to motor production technical field, the hermetically-sealed construction between especially a kind of machine shaft and motor cover.

Background technology

Out of doors or the motor of wet environment work, owing to drenching with rain for a long time, the as easy as rolling off a log watered and wetting of motor internal, causes motor short circuit to burn.Because machine shaft is to stretch out from motor cover, therefore between machine shaft and motor cover sealing most important, if sealed, badly cause motor to make moist or intake, can directly affect the end of a thread and winding wire, motor short circuit is burnt, when motor side is to placement in addition, water also can be along motor cover in the axis hole of dirty infiltration motor cover, between existing motor cover and machine shaft, there is no hermetically-sealed construction, therefore the water resistance of motor is just undesirable, seriously affects the useful life of motor.

Summary of the invention

Technical problem to be solved by this invention is the hermetically-sealed construction providing for the above-mentioned state of the art between a kind of rational in infrastructure, machine shaft and the motor cover with good water resistance.

The present invention solves the problems of the technologies described above adopted technical scheme: the hermetically-sealed construction between a kind of machine shaft and motor cover, comprise machine shaft and motor cover, motor cover is provided with the axis hole stretching out with one end of the power supply machine rotating shaft of coaxial bearing, it is characterized in that: the upper surface of described motor cover is one-body molded the annular lug coaxial with axis hole, between the bottom surface of described annular lug and the upper surface of motor cover, be formed with the cannelure that liquid flows out of being convenient to of indent, and be stamped a shroud for dash in annular lug upper cover.

As improvement, the middle part of described annular lug forms an annular groove corresponding to the position of axis hole, is equipped with and can makes machine shaft and motor cover keep the sealing ring of sealing in described annular groove.

As improvement, on the upper surface of described sealing ring, be provided with ring table groove, outside is equipped with the elastic collar for machine shaft being clamped to sealing.

Improve, described sealing ring is the rubber ring that is two coil structures again, and wherein the lateral surface of outer ring and annular groove are close to, and the inwall of inner ring is fastened on machine shaft, and described elastic collar is tightly placed on the lateral surface of inner ring.

Further improve, between the bottom surface of described shroud and the surface of motor cover, leave the gap of oozing out for liquid.

Compared with prior art, the invention has the advantages that: the upper surface of motor cover is one-body molded the annular lug coaxial with axis hole, between the bottom surface of annular lug and the upper surface of motor cover, be formed with the cannelure that liquid flows out of being convenient to of indent, and be stamped a shroud for dash in annular lug upper cover, like this when motor is sidelong, water on motor just can flow out along motor cover from cannelure, and can not enter in the axis hole of motor cover, when motor straight is put, shroud can play again waterproof action; At axis hole, form sealing ring outward in addition, the outside of sealing ring is nested with elastic collar, sealing ring can be fitted tightly with machine shaft, further improved the sealing property between machine shaft and motor cover, anti-sealing enters motor, and this design of Sealing Structure is reasonable, has effectively improved the water resistance of motor, then improve the useful life of motor, guaranteed the normal safe operation of motor.

Accompanying drawing explanation

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the cutaway view of Fig. 1 along A-A line;

Fig. 3 is the STRUCTURE DECOMPOSITION figure of Fig. 1;

Fig. 4 is I portion enlarged drawing in Fig. 2;

Fig. 5 is the STRUCTURE DECOMPOSITION figure of Fig. 1;

Fig. 6 is the enlarged drawing of sealing ring together with cooperatively interacting with elastic collar in Fig. 5.

Embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.

As shown in Figures 1 to 6, hermetically-sealed construction between machine shaft and the motor cover of the present embodiment, comprise machine shaft 2 and motor cover 1, motor cover 1 is provided with the axis hole 13 that stretch out one end of the power supply machine rotating shaft 2 coaxial with bearing 6, the upper surface of described motor cover 1 is one-body molded the annular lug 11 coaxial with axis hole 13, between the upper surface of the bottom surface of annular lug 11 and motor cover 1, be formed with the cannelure 12 that liquid flows out of being convenient to of indent, and be stamped a shroud 3 for dash in annular lug 11 upper covers, the middle part of annular lug 11 forms an annular groove corresponding to the position of axis hole 13, in described annular groove, be equipped with and can make machine shaft 2 and motor cover 1 keep the sealing ring 4 of sealing, on the upper surface of sealing ring 4, be provided with ring table groove, outside is equipped with the elastic collar 5 for machine shaft 2 being clamped to sealing, motor cover 1 is by arranging sealing ring 4 and elastic collar 5, greatly improved the sealing property between machine shaft 2, water can not infiltrated in motor along machine shaft 2, described sealing ring 4 is for being the rubber ring of two coil structures, and wherein the lateral surface of outer ring 42 and annular groove are close to, and the inwall of inner ring 41 is fastened on machine shaft 2, and described elastic collar 5 is tightly placed on the lateral surface of inner ring 41, described shroud 3 is a crown cap, cover cap is on annular lug 11, the middle part of shroud 3 is convex is provided with the through hole 31 coaxial with axis hole 13, between the surface of the bottom surface of shroud 3 and motor cover 1, leave the gap of oozing out for liquid, like this when motor is sidelong, water on motor just can flow out along motor cover 1 from infiltration groove 12, and can not enter in the axis hole 13 of motor cover 1, when motor straight is put, shroud 3 can play again good dash effect, can effectively avoid because sealing property is bad, making motor internal watered and wetting, fault occurs to cause that motor short circuit is burnt etc.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. the hermetically-sealed construction between a machine shaft and motor cover, comprise machine shaft (2) and motor cover (1), motor cover (1) is provided with the axis hole (13) that stretch out one end of the power supply machine rotating shaft (2) coaxial with bearing (6), it is characterized in that: the upper surface of described motor cover (1) is one-body molded the annular lug (11) coaxial with axis hole (13), between the upper surface of the bottom surface of described annular lug (11) and motor cover (1), be formed with the cannelure (12) that liquid flows out of being convenient to of indent, and be stamped a shroud for dash (3) in annular lug (11) upper cover.

2. hermetically-sealed construction according to claim 1, it is characterized in that: the middle part of described annular lug (11) forms an annular groove corresponding to the position of axis hole (13), in described annular groove, be equipped with and can make machine shaft (2) and motor cover (1) keep the sealing ring (4) of sealing.

3. hermetically-sealed construction according to claim 2, it is characterized in that: on the upper surface of described sealing ring (4), be provided with ring table groove, outside is equipped with the elastic collar (5) for machine shaft (2) being clamped to sealing.

4. hermetically-sealed construction according to claim 2, it is characterized in that: described sealing ring (4) is for being the rubber ring of two coil structures, wherein lateral surface and the annular groove of outer ring (42) are close to, it is upper that the inwall of inner ring (41) is fastened in machine shaft (2), and described elastic collar (5) is tightly placed on the lateral surface of inner ring (41).

5. according to arbitrary described hermetically-sealed construction in claim 1 to 4, it is characterized in that: between the bottom surface of described shroud (3) and the surface of motor cover (1), leave the gap of oozing out for liquid.