CN217115810U

CN217115810U - Motor protection casing assembly

Info

Publication number: CN217115810U
Application number: CN202122281745.8U
Authority: CN
Inventors: 宋代奎; 张雪梅; 汪中海
Original assignee: Changzhou Kinetek Motor Master Co ltd
Current assignee: Changzhou Kinetek Motor Master Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-08-02
Anticipated expiration: 2031-09-18

Abstract

The utility model provides a motor protection casing component, which comprises a casing body and a centrifugal switch, wherein the casing body is provided with a vent hole; the centrifugal switch comprises a fixing piece, a sliding piece, an elastic piece and a centrifugal piece, wherein the sliding piece comprises a positioning sleeve and a sliding plug; the centrifugal piece is provided with a positioning groove for matching and inserting the limiting arm, one end of the centrifugal piece is hinged with the positioning sleeve, and the elastic piece is elastically connected between the other ends of the adjacent centrifugal pieces. The utility model discloses push away the dislocation with the slip end cap from the ventilation hole department of casing under the centrifugal force effect when the pivot rotates, make the effective ventilation cooling of motor during operation, then with slip end cap return shutoff ventilation hole when the pivot stall, play good dustproof and waterproof effect.

Description

Motor protection casing assembly

Technical Field

The utility model relates to a motor especially motor spare part technical field especially relates to a motor protection casing subassembly.

Background

The existing shell structure is fixed in type and is divided into an opening form and a closing form, so that the application occasions of the motor are limited, and the motor cannot adapt to a complex application environment. For example, in the use environment of some motors, the motors need ventilation and cooling in the working process, the temperature rise of the motors is reduced, the running efficiency is improved, and the motors need to be closed, dustproof and waterproof when the motors stop running. The existing shell is single in structure, either closed or open, and cannot simultaneously give consideration to the effects of dust prevention, water prevention, ventilation and cooling. There is a need for further design improvements to motor housings.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the not enough of prior art, the utility model provides an utilize the centrifugal force of the rotation formation of pivot, drive centrifugal switch and move, realize the motor and effectively seal the casing when the stop work, dustproof and waterproof is respond well, and the ventilation hole of casing is then opened when the motor operates, effectively reduces the motor temperature rise, improves work efficiency's a motor protection casing subassembly.

The utility model provides a technical scheme that its technical problem adopted is: a motor protection casing assembly is arranged on a motor, the motor is provided with a rotating shaft, the casing assembly comprises a casing body and a centrifugal switch, the casing body is provided with a vent hole, the rotating shaft penetrates through the axial line position of the casing body, and the centrifugal switch is arranged on the rotating shaft corresponding to the vent hole position; the centrifugal switch comprises a fixing piece, a sliding piece, an elastic piece and at least two centrifugal pieces, wherein the fixing piece is fixed on the rotating shaft and radially and outwards extends out corresponding to the number of the centrifugal pieces to form a limiting arm; the centrifugal piece is provided with a positioning groove for matching and inserting the limiting arm, one end of the centrifugal piece is hinged with the positioning sleeve, and the elastic piece is elastically connected between the other ends of the adjacent centrifugal pieces.

In the above scheme, the centrifugal switch is skillfully designed, after the motor is started, the rotating shaft rotates to drive the fixing piece to rotate synchronously, the centrifugal piece also rotates synchronously, and under the action of centrifugal force and the limiting of the limiting arm, the outer end of the centrifugal piece overcomes the pulling force of the elastic piece and extends outwards. Meanwhile, under the limitation of the limiting arm, the centrifugal piece is conducted by a structure with one end hinged with the positioning sleeve, the positioning sleeve is inevitably driven to perform axial displacement, the sliding plug and the ventilation hole are driven to be staggered, and the ventilation effect when the motor is started is realized. When the motor is closed, the rotating shaft stops rotating, the outer end of the centrifugal piece is recovered along the limiting arm under the tensile force action of the elastic piece, the positioning sleeve is driven to return axially again, the sliding plug is driven to plug the ventilation hole, and the dustproof and waterproof effect after the motor is closed is achieved.

Preferably, the ventilation holes are circumferentially distributed on the circumferential surface of the shell body at intervals.

The corresponding ventilation holes are arranged, the sliding plugs are ring-shaped pieces, the outer walls of the ring-shaped pieces are in matched contact with the inner wall of the shell body, and the axial length of the ring-shaped pieces is larger than the maximum axial length of the ventilation holes along the inner wall of the shell.

In order to limit the positioning sleeve in the axial direction and prevent the rotating shaft from being thrown off in the rotating process, the outer end of the limiting arm is provided with a limiting hook buckle which is matched with the centrifugal piece to hook when the centrifugal piece is opened to the maximum angle in the centrifugal action.

The beneficial effects of the utility model are that, the utility model provides a pair of motor protection casing subassembly, structural design is reasonable, through centrifugal switch's design, can rotate along with the pivot and push away the dislocation with the slip end cap from the ventilation hole department of casing under the centrifugal force effect, makes the effective ventilation cooling of motor during operation, then plays good dustproof and waterproof effect with slip end cap return shutoff ventilation hole when the pivot stall.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the motor in the preferred embodiment of the present invention in the off state.

Fig. 2 is a schematic diagram of the motor in the starting process of the preferred embodiment of the present invention.

Fig. 3 is a schematic view of the motor in a normal operation state according to the preferred embodiment of the present invention.

In the figure, the device comprises a shell body 1, a rotating shaft 3, a fixing piece 4, a positioning sleeve 5, a limiting arm 6, a centrifugal piece 7, an elastic piece 8, a sliding plug 9, a ventilation hole 10, a positioning groove 11 and a limiting buckle.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

A motor protection casing subassembly as shown in fig. 1 to fig. 3 is the utility model discloses the preferred embodiment, sets up on the motor, and the motor has pivot 2, and the casing subassembly includes casing body 1 and centrifugal switch.

The chassis body 1 is provided with a vent hole 9. The ventilation holes 9 are circumferentially distributed on the circumferential surface of the machine shell body 1 at intervals.

The rotating shaft 2 is arranged on the axis position of the machine shell body 1 in a penetrating mode, and the centrifugal switch is arranged on the rotating shaft 2 corresponding to the position of the vent hole 9. Centrifugal switch includes mounting 3, slider, elastic component 7 and two centrifugation pieces 6, and mounting 3 is fixed on pivot 2 to corresponding 6 radial outside stretches out of centrifugation piece quantity and have spacing arm 5, and the slider includes position sleeve 4 and slip end cap 8, and position sleeve 4 slides outer cover in the 3 peripheries of mounting through the key-type connection, and slip end cap 8 then sets up in 4 axial side of position sleeve.

Corresponding to arranging of ventilation hole 9, slip end cap 8 is the loop forming element, loop forming element outer wall and 1 inner wall cooperation contact of casing body, loop forming element axial length then is greater than ventilation hole 9 along shells inner wall's maximum axial length. The sliding plug 8 and the vent hole 9 are plugged and dislocated in the axial displacement process.

The centrifugal piece 6 is provided with a positioning groove 10 for the matching and inserting of the limiting arm 5, one end of the centrifugal piece 6 is hinged with the positioning sleeve 4, the elastic piece 7 is elastically connected between the other ends of the adjacent centrifugal pieces 6, and the elastic piece 7 can preferably use a spring.

As shown in fig. 2 and 3, after the motor is started, the rotating shaft 2 rotates to drive the fixing member 3 to rotate synchronously, the centrifugal member 6 also rotates synchronously, and under the action of centrifugal force and the limit of the limiting arm 5, the outer end of the centrifugal member 6 overcomes the pulling force of the elastic member 7 and extends outwards. Meanwhile, under the limitation of the limiting arm 5, the centrifugal piece 6 inevitably drives the positioning sleeve 4 to perform axial displacement under the conduction of a structure with one end hinged with the positioning sleeve 4, so that the dislocation of the sliding plug 8 and the ventilation hole 9 is driven, and the ventilation effect when the motor is started is realized.

As shown in fig. 3, after the motor is turned off, the rotating shaft 2 stops rotating, the outer end of the centrifugal part 6 is retracted along the limiting arm 5 under the tensile force of the elastic part 7, the positioning sleeve 4 is driven to axially return again, the sliding plug 8 is driven to seal the ventilation hole 9, and the dustproof and waterproof effects after the motor is turned off are achieved.

Meanwhile, in order to limit the positioning sleeve 4 in the axial direction and avoid the rotation process of the rotating shaft 2 from being thrown off, the outer end of the limiting arm 5 is provided with a limiting hook 11 which is matched with the centrifugal piece 6 to hook when the centrifugal action opens to the maximum angle.

The motor protection casing assembly is reasonable in structural design and skillfully designs the centrifugal switch. For the motor design in a complex environment, the motor is in an open state when the motor is only considered to run in the temperature rise during design, and the shell is in a closed state when the motor does not work, so that both the motor and the shell can be considered, and the new design can meet the requirements of customers more accurately. Through this kind of novel design, can compromise the ventilation cooling of motor simultaneously, raise the efficiency and dustproof and waterproof, the temperature rise can not be too high when guaranteeing the motor operation, improves the operating efficiency, and simultaneously, the stall state seals, dustproof and waterproof. The structure of the existing casing is not as single as that of the existing casing.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a motor protection casing subassembly, sets up on the motor, and the motor has pivot (2), its characterized in that: the shell assembly comprises a shell body (1) and a centrifugal switch, wherein the shell body (1) is provided with a vent hole (9), the rotating shaft (2) penetrates through the axis position of the shell body (1), and the centrifugal switch is arranged on the rotating shaft (2) corresponding to the vent hole (9);

the centrifugal switch comprises a fixing piece (3), a sliding piece, an elastic piece (7) and at least two centrifugal pieces (6), wherein the fixing piece (3) is fixed on the rotating shaft (2), and radially and outwards extends out corresponding to the number of the centrifugal pieces (6) to form a limiting arm (5), the sliding piece comprises a positioning sleeve (4) and a sliding plug (8), the positioning sleeve (4) is sleeved on the periphery of the fixing piece (3) in a sliding mode, the sliding plug (8) is arranged on the axial side of the positioning sleeve (4), and the sliding plug (8) is matched with the vent hole (9) in the axial displacement process and plugs the vent hole (9);

the centrifugal part (6) is provided with a positioning groove (10) for the matching and inserting of the limiting arm (5), one end of the centrifugal part (6) is hinged with the positioning sleeve (4), and the elastic part (7) is elastically connected between the other ends of the adjacent centrifugal parts (6).

2. The motor protector housing assembly of claim 1, wherein: the ventilation holes (9) are circumferentially distributed on the circumferential surface of the shell body (1) at intervals.

3. A motor protector housing assembly as set forth in claim 2 in which: the sliding plug (8) is a ring-shaped piece, the outer wall of the ring-shaped piece is in fit contact with the inner wall of the shell body (1), and the axial length of the ring-shaped piece is greater than the maximum axial length of the ventilation hole (9) along the inner wall of the shell.

4. The motor protector housing assembly of claim 1, wherein: the outer end of the limiting arm (5) is provided with a limiting hook (11) which is matched with the centrifugal piece (6) to hook when the centrifugal piece (6) is opened to the maximum angle under the centrifugal action.