CN113726083A

CN113726083A - Protection device of direct current brushless motor

Info

Publication number: CN113726083A
Application number: CN202111280736.5A
Authority: CN
Inventors: 应成炯
Original assignee: Suzhou Fugna Mechatronics Co ltd
Current assignee: Suzhou Fugna Mechatronics Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2021-11-30
Anticipated expiration: 2041-11-01
Also published as: CN113726083B

Abstract

The invention provides a protection device of a direct current brushless motor, which comprises a main body, wherein a protection device is arranged in the main body, fixed blocks are fixedly arranged on the inner walls of the left side and the right side of the protection device, and a damping component is arranged in the protection device and positioned between the two fixed blocks; the damping assembly comprises a damping base, a damping air cushion, a damping connecting rod, a buffering sliding block and a buffering spring, the damping base is installed at the bottom of the inner wall of the protection device, and the damping air cushion is fixedly installed above the damping base. This brushless DC motor's protection device, the device utilize mutually supporting between protecting component and the damper through setting up protector, realize effectively protecting and letting out power to it to external unknown striking, avoided the brushless motor body to cause the damage owing to the collision at the in-process of operation to make that the brushless motor body can be better protected, reached the purpose of autonomic protection.

Description

Protection device of direct current brushless motor

Technical Field

The invention belongs to the technical field of brushless motors, and particularly relates to a protection device of a direct-current brushless motor.

Background

At present most direct current actuating system all uses traditional brush motor as the power supply, because the tradition has brush motor inefficiency, and life-span is short and electromagnetic interference is big, and neotype brushless motor is efficient, longe-lived, can super high rotational speed operation and electromagnetic interference are little, consequently along with the continuous development of motor and electronic technology, brushless motor will gradually replace brush motor, becomes motor market mainstream product.

At present, brushless motors in the market have the following problems in the use process: due to the fact that uncontrollable factors exist in the external environment, when the equipment is impacted by external force, self protection cannot be achieved, the equipment is damaged, and normal use of the equipment is affected; the second step is as follows: in the running process of the equipment, a noise phenomenon exists, so that the physical and psychological health of people is influenced; and thirdly: in the running process of the equipment, the problem of shaking exists, and the loosening condition of internal parts is often caused by over severe vibration, so that the service life of the equipment is influenced; therefore, there is a shortage that the user's use requirement cannot be satisfied, and therefore, further improvement is necessary.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and a protection device for a dc brushless motor is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a protection device for a dc brushless motor, which is achieved by the following specific technical means: including main part, protector, fixed block, damper, shock mount, shock attenuation air cushion, shock attenuation connecting rod, buffering slider, buffer spring, protective component, installation pole, activity sloping block, bolster, protection baffle, linkage subassembly, moving part, activity push rod, installed part, fixed spring, response piece, the part of making an uproar falls in giving sound insulation, soundproof cotton, damping spring, motor body, outage protection mechanism.

The position and connection relationship among the structures are as follows:

a protection device of a brushless direct current motor comprises a main body, wherein a protection device is arranged inside the main body, fixed blocks are fixedly arranged on the inner walls of the left side and the right side of the protection device, and a damping assembly is arranged inside the protection device and between the two fixed blocks; the damping assembly comprises a damping base, a damping air cushion, a damping connecting rod, a buffering sliding block and a buffering spring, wherein the damping base is installed at the bottom of the inner wall of the protection device, the damping air cushion is fixedly installed above the damping base, the damping connecting rod is installed on each of the left side and the right side of the damping air cushion, the buffering sliding block is movably installed at the lower end of the damping connecting rod, and the buffering spring is connected to each of the left side and the right side of the buffering sliding block; the upside of vibration damping base has seted up the spout, and the setting of buffering slider is in vibration damping base's spout, buffer spring keeps away from the one end of buffering slider and vibration damping base's spout inner wall fixed connection.

Further, damper's upside sets up installs protection component, protection component includes protection piece, installation pole, activity sloping block, bolster and guard flap, can realize effectively protecting and letting out the power to it the impact of external unknown through setting up protection component, has avoided the brushless motor body to cause the damage owing to the collision at the in-process of operation to make that the brushless motor body can be better protected, reached the purpose of autonomic protection, the bottom fixed mounting of protection piece has the installation pole, the bottom fixed mounting of installation pole has the activity sloping block, the bolster is installed in the top setting of protection piece, the upside fixed mounting of bolster has guard flap.

Furthermore, the bottom of the movable inclined block is fixedly connected with the bottom of the shock absorption air cushion.

Furthermore, linkage assemblies are arranged on the left side and the right side of the movable inclined block, and each linkage assembly comprises a movable part, a movable push rod, an installation part and a fixed spring; when the stroke that moves to the inside direction based on protective component reaches the certain limit, utilize activity sloping block to promote the moving part and move to both sides with the activity push rod, the installed part extrudees fixed spring simultaneously, the moving part is located the left and right sides of activity sloping block and rather than laminating contact mutually, one side fixedly connected with activity push rod of activity sloping block is kept away from to the moving part, the right-hand member fixedly connected with installed part of moving part is kept away from to the activity push rod, the installed part sets up the inside at the fixed block, the recess has been seted up to the inside of fixed block, and sets up between the inner wall of recess and the installed part and be connected with fixed spring.

Further, the inside of fixed block sets up installs the response piece, the response piece sets up the upper and lower both sides at fixed spring, the response piece uses through the cooperation with the installed part, along with the continuous inside direction removal of installed part, impels installed part and response piece to contact to the signal of telecommunication gives power-off protection mechanism.

Furthermore, a sound insulation and noise reduction part is arranged in the main body, and the sound insulation and noise reduction part comprises a sound receiving hole, sound insulation cotton and a damping spring; the utility model discloses a motor, including motor body, noise reduction part, damping spring, sound insulation and noise reduction part, damping spring's the other end and the inner wall looks fixed connection of main part, the effect that utilizes damping spring to play the shock attenuation buffering to motor body has been seted up on the inner wall of noise reduction part that gives sound insulation, the sound insulation is set up the soundproof cotton of installing inside of noise reduction part, noise reduction part's the outside setting, the vibration that arouses in the motor body operation process is reduced.

Furthermore, the sound insulation and noise reduction parts are arranged at the axle center of the main body, and the damping springs are uniformly distributed by taking the sound insulation and noise reduction parts as the center.

Furthermore, the motor body is arranged and installed in the sound insulation and noise reduction component.

Furthermore, a power-off protection mechanism is arranged on the rear side of the motor body, the rear end of the power-off protection mechanism penetrates through the sound-insulation and noise-reduction component and is fixedly connected with the inside of the main body, and the installation component is contacted with the induction part, so that an electric signal is sent out to enable the power-off protection mechanism to quickly perform electric interference on the motor body, the motor body is subjected to power-off processing, the irreversible damage to the motor body is avoided, and the safety of the motor body is further improved; the motor body is electrically connected with the power-off protection mechanism.

Advantageous effects

Compared with the prior art, the invention provides a protection device of a direct current brushless motor, which has the following beneficial effects:

1. this brushless DC motor's protection device, the device utilize mutually supporting between protecting component and the damper through setting up protector, realize effectively protecting and letting out power to it to external unknown striking, avoided the brushless motor body to cause the damage owing to the collision at the in-process of operation to make that the brushless motor body can be better protected, reached the purpose of autonomic protection.

2. This brushless DC motor's protection device, the device are through setting up damper assembly, and when the device received the collision of external force, utilize shock attenuation air cushion, shock attenuation connecting rod, buffering slider and buffer spring to realize effectively alleviating external pressure, offset the elimination to the pressure that produces when the collision, avoid because external device causes the damage to equipment, are favorable to improving the security when using, and then have improved the life of equipment.

3. This brushless DC motor's protection device, the device falls the part of making an uproar through setting up the sound insulation, utilize the mutually supporting between sound receiving hole and the soundproof cotton to realize falling the purpose of making an uproar to it, when motor body operation in-process produced the noise, utilize the sound receiving hole to absorb it, the noise passes through the inside that the part of making an uproar falls in the sound insulation through a plurality of sound receiving hole simultaneously, on the one hand, play the purpose of dispersion to the noise, on the other hand is convenient for utilize the soundproof cotton to carry out the active absorption to it, thereby avoid the noise that produces in the motor body operation process to outwards give off, good noise insulation noise reduction effect has been reached simultaneously.

4. This brushless DC motor's protection device, the device are through setting up power-off protection mechanism, because outside collision pressure is too big, reach the certain limit based on the stroke that protective assembly removed to inside direction, utilize installed part and response piece to contact, thereby the signal of telecommunication makes power-off protection mechanism carry out electrical interference fast to motor body, thereby carries out the outage to it and handles, avoids motor body irreversible damage to appear, further improves its security.

5. This brushless DC motor's protection device, the device are through setting up syllable-dividing and falling parts of making an uproar and damping spring, utilize damping spring to play the effect of shock attenuation buffering to motor body, reduce the vibration that causes among the motor body operation process, avoid its too violent and the spare part that leads to inside to appear not hard up condition because of the vibration simultaneously, further promote its life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a schematic view of a portion of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 3 in accordance with the present invention;

FIG. 6 is an enlarged view of portion C of FIG. 2 in accordance with the present invention;

FIG. 7 is a schematic view of the invention in partially cut-away perspective view of FIG. 1;

FIG. 8 is an enlarged view of portion D of FIG. 7 in accordance with the present invention;

fig. 9 is a schematic view of the installation structure of the power-off protection mechanism of the present invention.

In the figure: 1. a main body; 2. a guard; 3. a fixed block; 4. a shock absorbing assembly; 41. a shock-absorbing base; 42. a shock-absorbing air cushion; 43. a shock-absorbing connecting rod; 44. a buffer slide block; 45. a buffer spring; 5. a guard assembly; 51. a protection block; 52. mounting a rod; 53. a movable oblique block; 54. a buffer member; 55. a protective baffle; 6. a linkage assembly; 61. a movable member; 62. a movable push rod; 63. a mounting member; 64. fixing the spring; 7. a sensing member; 8. a sound insulation and noise reduction component; 81. a sound receiving hole; 82. sound insulation cotton; 83. a damping spring; 9. a motor body; 10. a power-off protection mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and it should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention may be combined with each other, for convenience of description, the words "up", "down", "left" and "right" appearing hereinafter merely indicate that the words are consistent with the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

Referring to fig. 1 to 9, a protection device for a dc brushless motor includes a main body 1, a protection device 2 is installed inside the main body 1, fixed blocks 3 are fixedly installed on inner walls of left and right sides of the protection device 2, and a damping assembly 4 is installed inside the protection device 2 and between the two fixed blocks 3; the damping assembly 4 comprises a damping base 41, a damping air cushion 42, a damping connecting rod 43, a buffer slide block 44 and a buffer spring 45, wherein the damping base 41 is installed at the bottom of the inner wall of the protection device 2, the damping air cushion 42 is fixedly installed above the damping base 41, the damping connecting rod 43 is installed on each of the left side and the right side of the damping air cushion 42, the buffer slide block 44 is movably installed at the lower end of the damping connecting rod 43, and the buffer spring 45 is connected to each of the left side and the right side of the buffer slide block 44; the upper side of the shock absorption base 41 is provided with a sliding groove, the buffering slide block 44 is arranged in the sliding groove of the shock absorption base 41, and one end of the buffering spring 45, which is far away from the buffering slide block 44, is fixedly connected with the inner wall of the sliding groove of the shock absorption base 41.

Further, the protection component 5 is installed in the upside setting of damper 4, protection component 5 includes protection piece 51, installation pole 52, activity sloping block 53, bolster 54 and protection baffle 55, can realize effectively protecting and letting out the power to external unknown striking through setting up protection component 5, brushless motor body 9 has been avoided causing the damage because of the collision at the in-process of operation, thereby make that brushless motor body 9 can be better protected, the purpose of autonomic protection has been reached, the bottom fixed mounting of protection piece 51 has installation pole 52, the bottom fixed mounting of installation pole 52 has activity sloping block 53, bolster 54 is installed in the top setting of protection piece 51, the upside fixed mounting of bolster 54 has protection baffle 55.

Furthermore, the bottom of the movable inclined block 53 is fixedly connected with the bottom of the shock absorption air cushion 42, and the pressure generated by the movable inclined block 53 can be effectively offset by using the shock absorption air cushion 42.

Further, the left side and the right side of the movable inclined block 53 are provided with linkage assemblies 6, and each linkage assembly 6 comprises a movable piece 61, a movable push rod 62, a mounting piece 63 and a fixed spring 64; when the stroke that moves to the inside direction based on protection component 5 reaches certain limit, utilize activity sloping block 53 to promote moving part 61 and activity push rod 62 and move to both sides, installation part 63 extrudees fixed spring 64 simultaneously, moving part 61 is located the left and right sides of activity sloping block 53 and rather than laminating contact mutually, moving part 61 keeps away from one side fixedly connected with activity push rod 62 of activity sloping block 53, right-hand member fixedly connected with installed part 63 of moving part 61 is kept away from to activity push rod 62, installed part 63 sets up the inside at fixed block 3, the inside of fixed block 3 is seted up flutedly, and set up between the inner wall of recess and the installed part 63 and be connected with fixed spring 64.

Further, response piece 7 is installed in the inside setting of fixed block 3, and response piece 7 sets up the upper and lower both sides at fixed spring 64, and response piece 7 uses through the cooperation with installed part 63, along with installed part 63 is continuous to inside direction removal, makes installed part 63 and response piece 7 contact to the signals of telecommunication makes power protection mechanism 10 carry out electrical interference fast to motor body 9, thereby carries out the outage to it and handles.

Further, a sound insulation and noise reduction component 8 is arranged and mounted inside the main body 1, and the sound insulation and noise reduction component 8 comprises a sound collection hole 81, sound insulation cotton 82 and a damping spring 83; a plurality of sound receiving hole 81 has been seted up on the inner wall of the noise reduction part 8 that gives sound insulation, soundproof cotton 82 is installed to the inside setting of the noise reduction part 8 that gives sound insulation, utilize sound receiving hole 81 to absorb it, the noise passes through the inside of a plurality of sound receiving hole 81 to the noise reduction part 8 that gives sound insulation simultaneously, on the one hand, the purpose of dispersion is played to the noise, on the other hand is convenient for utilize soundproof cotton 82 to carry out the effective absorption to it, thereby the noise of avoiding motor body 9 to move the in-process production outwards gives off, good noise insulation and noise reduction effect has been reached simultaneously, a plurality of damping spring 83 is installed in the outside setting of the noise reduction part 8 that gives sound insulation, damping spring 83's the other end and main part 1's inner wall looks fixed connection.

Further, the noise insulation and reduction member 8 is disposed at the axial center of the main body 1, and the damper springs 83 are uniformly arranged with the noise insulation and reduction member 8 as the center.

Further, the sound insulation and noise reduction component 8 is internally provided with a motor body 9.

Furthermore, a power-off protection mechanism 10 is arranged on the rear side of the motor body 9, the rear end of the power-off protection mechanism 10 penetrates through the sound-insulation and noise-reduction component 8 and is fixedly connected with the inside of the main body 1, and the installation part 63 is in contact with the induction part 7, so that an electric signal is sent out to enable the power-off protection mechanism 10 to quickly perform electric interference on the motor body 9, power-off processing is performed on the motor body, irreversible damage to the motor body 9 is avoided, and the safety of the motor body is further improved; wherein, the motor body 9 is electrically connected with the power-off protection mechanism 10.

The specific use mode and function of the embodiment are as follows:

the working principle is as follows: when the protection device is used, the brushless motor is used, a noise phenomenon exists, the noise reduction component 8 is arranged, the noise reduction purpose can be realized by utilizing the mutual matching between the sound receiving holes 81 and the soundproof cotton 82, when the motor body 9 generates noise in the operation process, the sound receiving holes 81 are utilized to absorb the noise, meanwhile, the noise penetrates into the sound insulation and noise reduction component 8 through the plurality of sound receiving holes 81, on one hand, the purpose of dispersing the noise is achieved, on the other hand, the soundproof cotton 82 is convenient to effectively absorb the noise, so that the noise generated in the operation process of the motor body 9 is prevented from being outwards radiated, and meanwhile, a good sound insulation and noise reduction effect is achieved; in addition, the brushless motor still has shaking in the operation process, the damping spring 83 can be used for performing a damping and buffering effect on the motor body 9, so that the vibration caused in the operation process of the motor body 9 is reduced, the loosening of internal parts caused by severe vibration is avoided, and the service life of the brushless motor is further prolonged;

in addition, because the external environment has uncontrollable factors, when the equipment is impacted by external force, the impact pressure is effectively resisted by the protective assembly 5, the mounting rod 52 and the movable inclined block 53 are driven to move towards the inner direction by the protective baffle 55, and the movable inclined block 53 continuously moves towards the inner direction along with the movement, so that the external pressure is effectively relieved by the damping air cushion 42, the damping connecting rod 43, the buffer sliding block 44 and the buffer spring 45, the pressure generated in the collision is counteracted and eliminated, the damage to the equipment caused by an external device is avoided, the safety in use is favorably improved, the service life of the equipment is further prolonged, and the brushless motor body 9 can be better protected by the arrangement, and the purpose of autonomous protection is achieved;

and when outside collision pressure is too big, when the stroke that moves to the inside direction based on protection component 5 reaches certain limit, utilize activity sloping block 53 to promote moving part 61 and activity push rod 62 and move to both sides, installation piece 63 extrudees fixed spring 64 simultaneously, along with installation piece 63 is continuous to move to the inside direction, impel installation piece 63 and response piece 7 to contact, thereby send out the signal of telecommunication and make outage protection mechanism 10 carry out electrical interference to motor body 9 fast, thereby carry out the outage to it and handle, avoid motor body 9 to appear irreversible damage, further improve its security.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A protection device of a DC brushless motor comprises a main body (1), and is characterized in that:

the protective device (2) is arranged in the main body (1), the inner walls of the left side and the right side of the protective device (2) are fixedly provided with fixed blocks (3), and a damping component (4) is arranged in the protective device (2) and between the two fixed blocks (3);

the damping assembly (4) comprises a damping base (41), a damping air cushion (42), a damping connecting rod (43), a buffering sliding block (44) and a buffering spring (45), wherein the damping base (41) is installed at the bottom of the inner wall of the protection device (2), the damping air cushion (42) is fixedly installed above the damping base (41), the damping connecting rod (43) is installed on each of the left side and the right side of the damping air cushion (42), the buffering sliding block (44) is movably installed at the lower end of the damping connecting rod (43), and the buffering spring (45) is connected to each of the left side and the right side of the buffering sliding block (44);

the upside of shock attenuation base (41) has seted up the spout, and buffering slider (44) set up in the spout of shock attenuation base (41), buffer spring (45) keep away from the one end of buffering slider (44) and the spout inner wall fixed connection of shock attenuation base (41).

2. A protection apparatus for a dc brushless motor according to claim 1, wherein: protection component (5) are installed in the upside setting of damper (4), protection component (5) are including protection piece (51), installation pole (52), activity sloping block (53), bolster (54) and guard flap (55), the bottom fixed mounting of protection piece (51) has installation pole (52), the bottom fixed mounting of installation pole (52) has activity sloping block (53), bolster (54) are installed in the top setting of protection piece (51), the upside fixed mounting of bolster (54) has guard flap (55).

3. A protection apparatus for a dc brushless motor according to claim 2, wherein: the bottom of the movable inclined block (53) is fixedly connected with the bottom of the shock absorption air cushion (42).

4. A protection apparatus for a dc brushless motor according to claim 2, wherein: linkage assemblies (6) are arranged on the left side and the right side of the movable inclined block (53), and each linkage assembly (6) comprises a movable piece (61), a movable push rod (62), a mounting piece (63) and a fixed spring (64);

the utility model discloses a fixed block's installation, including movable piece (61), movable piece (61) and movable push rod (62), the right-hand member fixedly connected with installed part (63) of movable piece (61) are kept away from to movable piece (61) and are connected with fixed spring (64) between the inner wall of just setting up between installed part (63) of fixed block (3), the recess is seted up to the inside of fixed block (3) and the recess.

5. A protection apparatus for a dc brushless motor according to claim 4, wherein: the inside setting of fixed block (3) is installed and is responded to piece (7), respond to piece (7) and set up the upper and lower both sides at fixed spring (64), respond to piece (7) and use through the cooperation with installed part (63).

6. A protection apparatus for a dc brushless motor according to claim 1, wherein: a sound insulation and noise reduction part (8) is arranged in the main body (1), and the sound insulation and noise reduction part (8) comprises a sound collection hole (81), sound insulation cotton (82) and a damping spring (83);

a plurality of sound receiving holes (81) are formed in the inner wall of the sound insulation and noise reduction component (8), sound insulation cotton (82) is arranged inside the sound insulation and noise reduction component (8), a plurality of damping springs (83) are arranged and installed on the outer side of the sound insulation and noise reduction component (8), and the other ends of the damping springs (83) are fixedly connected with the inner wall of the main body (1).

7. A protection apparatus for a dc brushless motor according to claim 6, wherein: the sound insulation and noise reduction part (8) is arranged at the axis of the main body (1), and the damping springs (83) are uniformly distributed by taking the sound insulation and noise reduction part (8) as the center.

8. A protection apparatus for a dc brushless motor according to claim 6, wherein: the sound insulation and noise reduction component (8) is internally provided with a motor body (9).

9. A protection apparatus for a dc brushless motor according to claim 8, wherein: a power-off protection mechanism (10) is arranged on the rear side of the motor body (9), and the rear end of the power-off protection mechanism (10) penetrates through the sound-insulation noise-reduction component (8) and is fixedly connected with the inside of the main body (1);

the motor body (9) is electrically connected with the power-off protection mechanism (10).