CN218783672U

CN218783672U - Frequency conversion DC brushless motor with vibration/noise reduction function

Info

Publication number: CN218783672U
Application number: CN202222754652.7U
Authority: CN
Inventors: 吴永红; 李方升
Original assignee: Zhongshan Gchimay Electric Appliance Co ltd
Current assignee: Zhongshan Gchimay Electric Appliance Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-31
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a frequency conversion DC brushless motor with vibration/noise reduction function belongs to DC brushless motor technical field. Including stator and rotor, stator and rotor are installed inside the shell, both sides are installed even the frame around the shell, even set up in the frame outside cover and install the bradyseism frame, the bradyseism frame is located shell outside lower part, bradyseism frame bottom slidable mounting has the slide rail, the dull polish strip is installed on the slide rail top. The utility model discloses a relative displacement can take place for relative displacement, the horizontal slide rail of collocation in upper and lower direction in setting of bradyseism frame, bradyseism frame and motor main part for the bradyseism frame can slide around, can turn into the concertina movement of spring with the vibrations that the base received, and turn into the potential energy of removal frictional heating and air internal energy, offset the quick conversion of reciprocating motion, efficient shock attenuation buffering is carried out to effectual damping structure, and then the vibrations that reduce the motor and receive are disturbed.

Description

Frequency conversion DC brushless motor with vibration/noise reduction function

Technical Field

The utility model relates to a mould corollary equipment technical field, more specifically say, relate to a frequency conversion DC brushless motor with vibration/noise reduction function.

Background

The brushless direct current motor is composed of a motor main body and a driver, and is a typical electromechanical integration product, a stator winding of the motor is mostly made into a three-phase symmetrical star connection method, a magnetized permanent magnet is adhered to a rotor, a position sensor is arranged in the motor in order to detect the polarity of the rotor of the motor, and the brushless direct current motor needs to be subjected to shock absorption protection in order to stably operate under the working condition of large vibration.

The existing application number is 202022637082.4, the patent name is a novel direct current brushless motor with an anti-vibration function, a vibration stopping spring is arranged, the other end of a damping spring is connected to a joint inside a protection frame, butyl rubber is filled inside the protection frame, and a butyl rubber vibration stopping pad is a high-density damping rubber plate and mainly plays a role in inhibiting common vibration;

although above-mentioned scheme can play the cushioning effect, because of not setting up effectual damping structure, the motor can take place to rock under the flexible effect of spring when leading to receiving vibrations, only alleviates vibration frequency, can not carry out effectual shock attenuation protection, in view of this, we provide a frequency conversion brushless DC motor who has vibration/noise reduction function.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

An object of the utility model is to provide a frequency conversion DC brushless motor with vibration/noise reduction function to the buffer structure who proposes current motor in solving above-mentioned background art does not set up effectual damping structure, and the motor can take place to rock under the concertina work of spring when leading to receiving vibrations, only with the problem that vibration frequency mitigatees.

2. Technical scheme

A variable-frequency brushless direct-current motor with a shock absorption and noise reduction function comprises a stator and a rotor, wherein the stator and the rotor are installed inside a shell, connecting frames are installed on the front side and the rear side of the shell, a shock absorption frame is sleeved on the outer side of the connecting frames and located on the lower portion of the outer side of the shell, a sliding rail is installed at the bottom end of the shock absorption frame in a sliding mode, a sanding strip is installed at the top end of the sliding rail, the shock absorption frame comprises a wear-resistant strip matched with the sanding strip, a base is installed on the lower portion of the shock absorption frame and comprises a spring frame, a main rod penetrates through the middle of the spring frame, and an assembling seat is installed at the end portion of the main rod;

install the motor in the position that lasts the vibration, now with the pedestal mounting in the position that needs the installation, again with the stator, the rotor is installed on the base with the frequency conversion direct current brushless motor that other current auxiliary component of shell collocation are constituteed, when the vibration transmits the base, the vibration of fore-and-aft direction can carry out the flexible buffering through spring frame collocation mobile jib, and turn into the frictional heating of dull polish strip and wear strip with reciprocating motion, the vibration of upper and lower direction then can absorb through bradyseism frame and relative movement and the conversion between even frame, carry out the bradyseism effectively.

Preferably, the shock absorption frame comprises an arc frame, a rectangular sliding hole is formed in the upper portion of the arc frame, and the connecting frame is slidably mounted in the middle of the rectangular sliding hole;

the connecting frame slides up and down in the rectangular sliding hole, and can provide a buffer moving distance when vibration in the up-down direction occurs.

Preferably, the connecting frame comprises a middle rod, a sliding connection frame matched with the rectangular sliding hole is installed on the outer wall of the middle rod, a guide strip is installed at the rectangular sliding hole of the arc frame, a raised head is installed in the middle of the sliding connection frame, and a notch matched with the raised head is formed in the side wall of the arc frame;

the sliding connection frame can ensure that the shock absorption frame and the middle rod can only slide up and down and can not rotate, and the stable vibration absorption in the up-and-down direction is ensured.

Preferably, the upper end and the lower end of the sliding connection frame are provided with sliding rods, the end parts of the sliding rods are sleeved with damping shells, springs are arranged between the damping shells and the sliding connection frame, each sliding rod comprises a hollow tube, one end of the hollow tube, which is positioned inside the damping shell, is provided with a piston plate, and the middle part of the piston plate and the end part of the hollow tube are provided with communicated bevel holes;

the slide bar collocation spring can slow down the medium pole and for the upper and lower interdynamic of bradyseism frame, and the hollow tube is pull from top to bottom in the damping shell for the hydraulic oil of both sides flows through constrictive dog-ear hole about the piston board, through will reciprocate the high pressure velocity of flow and the extrusion friction themogenesis that turns into hydraulic oil, can be fast make the spring stop to vibrate, carry out the damping effectively.

Preferably, the side wall of the middle part of the assembly seat is fixedly connected with the side wall of the bottom end of the slide rail, the front side and the rear side of the assembly seat are upwards turned and erected, and the front end and the rear end of the slide rail are fixedly connected with the front inner wall and the rear inner wall of the assembly seat;

the assembling seat is connected with the end part of the sliding rail, the buffering frame is limited, and the buffering frame can only slide back and forth within a certain moving range.

Preferably, the left end of the stator is provided with a limiting pin, the left end of the limiting pin is provided with a press connection seat in an inserted manner, the right end of the stator is provided with a reinforcing seat in an inserted manner, and the left end of the press connection seat and the reinforcing seat are respectively provided with a bearing chamber;

the pressure joint seat supports and presses at the shell tip, stabilizes spacingly through the spacer pin to the stator to connect through the grafting mode, shorten motor axial length, the bearing room adopts thinner lateral wall simultaneously, can be used for installation bearing, make full use of space.

Preferably, the outer side walls of the pressure connection seat and the reinforcing seat at the bearing chamber are provided with reinforcing ribs, and the reinforcing ribs are arranged in an annular array by taking the circle center of the rotor as the center;

the pressure joint seat is outwards outstanding with the strengthening rib of strengthening the seat outer wall, can reduce and shell and stator between the extrusion area of contact to improve the intensity of bearing room department thin wall position through the strengthening rib, avoid receiving the noise that extrusion deformation leads to the bearing to warp, carry out effectual noise reduction.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a setting of bradyseism frame, relative displacement can take place for bradyseism frame and motor main part in upper and lower direction, the horizontal slide rail of collocation for the bradyseism frame can slide around, can turn into the concertina movement of spring with the vibrations that the base was received, and turn into the potential energy of removal frictional heating and air internal energy, offset the quick conversion of reciprocating motion, efficient shock attenuation buffering is carried out to effectual damping structure, and then the vibrations that reduce the motor and receive are disturbed.

2. The utility model discloses a set up of strengthening the seat, to strengthen the seat and peg graft at the stator both ends, stabilize the injecing to the position of stator, set up many muscle positions in the position of strengthening seat and stator tight fit combination to make strengthen the seat and reduce the area of contact with stator core, reduce the contact range that can take place stress deformation, effectively prevent that the bearing room from warping, reduce the motor bearing noise problem that the bearing damage leads to, fall through controlling self deformation and make an uproar effectively.

Drawings

Fig. 1 is a schematic front view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the internal structure of the present invention;

FIG. 3 is a schematic view of the position between the middle connecting frame and the connecting parts;

fig. 4 is a sectional view of a partial structure of the elastic support assembly.

The reference numbers in the figures illustrate: the shock absorber comprises a base 1, a shock absorption frame 2, a shell 3, a rotor 4, a connecting frame 5, a crimping seat 6, a limiting pin 7, a stator 8, a reinforcing seat 9, reinforcing ribs 10, an assembling seat 11, a sliding rail 12, a main rod 13, a spring frame 14, an arc frame 21, a wear-resistant strip 22, a middle rod 51, a damping shell 52, a sliding connection frame 53, a guide strip 54, a spring 55, a raised head 56, a sliding rod 57, a hollow tube 571, a bevel hole 572 and a piston plate 573.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1-4, the present invention provides two technical solutions:

example one

A variable frequency DC brushless motor with shock absorption and noise reduction functions comprises a stator 8 and a rotor 4, wherein the stator 8 and the rotor 4 are installed inside a shell 3, connecting frames 5 are installed on the front side and the rear side of the shell 3, a cushioning frame 2 is sleeved outside the connecting frames 5 and is located on the lower portion of the outer side of the shell 3, a sliding rail 12 is installed at the bottom end of the cushioning frame 2 in a sliding mode, a sanding strip is installed at the top end of the sliding rail 12, the cushioning frame 2 comprises a wear-resistant strip 22 matched with the sanding strip, a base 1 is installed on the lower portion of the cushioning frame 2, the base 1 comprises a spring frame 14, a main rod 13 penetrates through the middle of the spring frame 14, and an assembling seat 11 is installed at the end portion of the main rod 13;

it is worth to say that the shock absorption frame 2 comprises an arc frame 21, a rectangular sliding hole is formed in the upper portion of the arc frame 21, and the connecting frame 5 is slidably mounted in the middle of the rectangular sliding hole;

specifically, the connecting frame 5 comprises a middle rod 51, a sliding connection frame 53 matched with a rectangular sliding hole is arranged on the outer wall of the middle rod 51, a guide strip 54 is arranged at the rectangular sliding hole of the arc frame 21, a raised head 56 is arranged in the middle of the sliding connection frame 53, and a notch matched with the raised head 56 is formed in the side wall of the arc frame 21;

furthermore, slide rods 57 are mounted at the upper end and the lower end of the sliding connection frame 53, a damping shell 52 is sleeved at the end part of each slide rod 57, a spring 55 is mounted between each damping shell 52 and the sliding connection frame 53, each slide rod 57 comprises a hollow tube 571, a piston plate 573 is mounted at one end of the hollow tube 571 located in the damping shell 52, and communicated bevel holes 572 are formed in the middle of the piston plate 573 and the end part of the hollow tube 571;

the motor is installed at a position continuously vibrating, the base 1 is installed at a position needing to be installed, then the stator 8, the rotor 4 and the shell 1 are installed on the base 1 together with other existing auxiliary components, when vibration is transmitted to the base 1, vibration in the front and back directions can be flexibly buffered through the spring frame 14 and the main rod 13, reciprocating movement is converted into frictional heat generation of the abrasive bars and the wear bars 22, vibration in the up and down directions can be absorbed through relative movement and conversion between the vibration buffering frame 2 and the connecting frame 5, vibration buffering is effectively carried out, the connecting frame 5 slides up and down in the rectangular sliding hole, a buffering moving distance can be provided when vibration in the up and down directions occurs, the sliding connection frame 53 can ensure that only sliding up and down between the vibration buffering frame 2 and the middle rod 51 can not rotate, stable vibration absorption in the up and down directions is ensured, the sliding rod 57 and the spring 55 can slow down up and down interaction of the middle rod 51 relative to the vibration buffering frame 2, the hollow tube 571 is drawn up and down in the damping shell 52, so that hydraulic oil plates on the two sides can flow up and down through narrow folded angle holes, the piston plates can flow into high-pressure hydraulic oil extrusion and high-pressure hydraulic oil can be effectively stopped, and hydraulic oil can be effectively, and hydraulic oil can be extruded 573.

Example one

furthermore, the side wall of the middle of the assembly seat 11 is fixedly connected with the side wall of the bottom end of the slide rail 12, the front side and the rear side of the assembly seat 11 are upwards turned and erected, and the front end and the rear end of the slide rail 12 are fixedly connected with the front inner wall and the rear inner wall of the assembly seat 11.

It is worth noting that the left end of the stator 8 is provided with the limit pin 7, the left end of the limit pin 7 is provided with the compression joint seat 6 in an inserted manner, the right end of the stator 8 is provided with the reinforcement seat 9 in an inserted manner, and the left end of the compression joint seat 6 and the reinforcement seat 9 are respectively provided with a bearing chamber.

It has to be said that the outer side walls of the crimping seat 6 and the reinforcing seat 9 at the bearing chamber are provided with the reinforcing ribs 10, and the reinforcing ribs 10 are arranged in an annular array with the center of the circle of the rotor 4 as the center.

Assembly seat 11 and slide rail 12 end connection, it is spacing to bradyseism frame 2, guarantee that bradyseism frame 2 can only slide around certain moving range, crimping seat 6 supports presses at 1 tip of shell, it is spacing to stabilize stator 8 through spacer pin 7, and connect through the grafting mode, shorten motor axial length, the bearing room adopts thinner lateral wall simultaneously, can be used for installing the bearing, the make full use of space, crimping seat 6 and the strengthening rib 10 of strengthening the 9 outer walls of seat are outwards outstanding, can reduce and shell 1 and stator 8 between the extrusion area of contact, and improve the intensity of bearing room department thin wall position through strengthening rib 10, avoid receiving the noise that extrusion deformation leads to the bearing deformation, carry out effectual the noise reduction.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a frequency conversion DC brushless motor with vibration/noise reduction function, includes stator (8) and rotor (4), its characterized in that: install inside shell (3) stator (8) and rotor (4), both sides are installed and are linked frame (5) around shell (3), link frame (5) outside cover to establish and install bradyseism frame (2), bradyseism frame (2) are located shell (3) outside lower part, bradyseism frame (2) bottom slidable mounting has slide rail (12), the dull polish strip is installed on slide rail (12) top, bradyseism frame (2) include with dull polish strip complex wear-resisting strip (22), base (1) is installed to bradyseism frame (2) lower part, base (1) includes spring bracket (14), spring bracket (14) middle part runs through installs mobile jib (13), assembly seat (11) are installed to mobile jib (13) tip.

2. The frequency conversion brushless DC motor with vibration and noise reduction function according to claim 1, is characterized in that: the shock absorption frame (2) comprises an arc frame (21), a rectangular sliding hole is formed in the upper portion of the arc frame (21), and the connecting frame (5) is slidably mounted in the middle of the rectangular sliding hole.

3. The frequency conversion brushless DC motor with vibration and noise reduction function according to claim 2, characterized in that: the connecting frame (5) comprises a middle rod (51), a sliding connection frame (53) matched with the rectangular sliding hole is installed on the outer wall of the middle rod (51), the arc frame (21) is located at the rectangular sliding hole and provided with a guide strip (54), a raised head (56) is installed in the middle of the sliding connection frame (53), and an opening matched with the raised head (56) is formed in the side wall of the arc frame (21).

4. The frequency conversion brushless DC motor with vibration and noise reduction function according to claim 3, is characterized in that: slide bars (57) are installed at the upper end and the lower end of the sliding connection frame (53), a damping shell (52) is sleeved at the end of each slide bar (57), a spring (55) is installed between each damping shell (52) and the sliding connection frame (53), each slide bar (57) comprises a hollow tube (571), a piston plate (573) is installed at one end, located inside the damping shell (52), of each hollow tube (571), and communicated bevel holes (572) are formed in the middle of each piston plate (573) and the end of each hollow tube (571).

5. The frequency conversion brushless DC motor with vibration and noise reduction function according to claim 1, is characterized in that: the assembly fixture is characterized in that the middle side wall of the assembly seat (11) is fixedly connected with the bottom end side wall of the sliding rail (12), the front side and the rear side of the assembly seat (11) are upwards turned and erected, and the front end and the rear end of the sliding rail (12) are fixedly connected with the front inner wall and the rear inner wall of the assembly seat (11).

6. The frequency conversion brushless DC motor with vibration and noise reduction function according to claim 5, is characterized in that: the stator structure is characterized in that a limiting pin (7) is installed at the left end of the stator (8), a press connection seat (6) is installed at the left end of the limiting pin (7) in an inserted connection mode, a reinforcing seat (9) is installed at the right end of the stator (8) in an inserted connection mode, and bearing chambers are respectively arranged at the left end of the press connection seat (6) and the reinforcing seat (9).

7. The frequency conversion brushless DC motor with vibration and noise reduction function according to claim 6, is characterized in that: the outer side wall of the pressure joint seat (6) and the outer side wall of the reinforcing seat (9) at the position of the bearing chamber are provided with reinforcing ribs (10), and the reinforcing ribs (10) are arranged in an annular array by taking the circle center of the rotor (4) as the center.