CN114614315B - Brush device of small motor - Google Patents
Brush device of small motor Download PDFInfo
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- CN114614315B CN114614315B CN202210194349.8A CN202210194349A CN114614315B CN 114614315 B CN114614315 B CN 114614315B CN 202210194349 A CN202210194349 A CN 202210194349A CN 114614315 B CN114614315 B CN 114614315B
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- rear end
- brush
- end cover
- adjusting
- motor
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 26
- 229910052799 carbon Inorganic materials 0.000 abstract description 26
- 238000012423 maintenance Methods 0.000 abstract description 15
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- 230000001105 regulatory effect Effects 0.000 description 10
- 238000010030 laminating Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/08—Slip-rings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention relates to the technical field of motor brushes, in particular to a brush device of a small motor, which comprises a motor main body and a rotating shaft positioned in the middle of the front end face of the motor main body, wherein a rear end cover is fixedly connected with the rear end face of the motor main body in a clamping manner, a brush assembly is arranged in the rear end cover, a rotor slip ring is arranged in the brush assembly, and an adjusting mechanism for adjusting and controlling the brush assembly is further arranged in the rear end cover. According to the invention, through designing the electric brush assembly, two groups of electric brush main bodies are started for use in a silent state, once the consumption is too large to support the built-in rotor of the motor main body to normally operate, a user does not need to disassemble the motor main body to replace an internal carbon brush, and the two groups of electric brush main bodies are started for standby through adjusting the assembly, so that the normal operation of the motor main body can be ensured, and the working efficiency can be improved and the service efficiency of the device can be increased especially for the equipment of a maintenance tool handheld drilling machine in an emergency maintenance state.
Description
Technical Field
The invention relates to the technical field of motor brushes, in particular to a brush device of a small motor.
Background
The motor is an electric motor and an engine. The working principle is that the starter rotor is driven to rotate by the forced rotation of the electrified coil in a magnetic field, a pinion on the rotor drives an engine flywheel to rotate, and the motor is used as an important mechanical driving device and is widely applied to various mechanical equipment;
The carbon brush, also called brush, is a device for transmitting energy or signals between a fixed part (shell) and a rotating part (slip ring) of a motor, and is generally made of pure carbon and a coagulant, and is generally square in shape and clamped on a metal bracket. The carbon brush generally comprises a carbon brush body and a carbon brush arm which is elastic and is used for fixing the carbon brush body, wherein a lead is led out of the carbon brush body and is connected with the copper sheet, and the lead is usually fused and fixed in the carbon brush body during preparation;
In the prior art, the carbon brush is used as a vulnerable part, and is in contact friction with the rotor slip ring in the long-time use process, and the user needs to replace the carbon brush in the motor periodically along with continuous friction consumption of the carbon brush, however, in the actual use process, the carbon brush is particularly used for equipment such as a hand drill, and is used as a main maintenance tool of mechanical equipment, the use frequency is high, the carbon brush loss in the motor is larger, once the carbon brush is consumed to a certain extent in the daily maintenance process, the driving of the motor is influenced, the use of the equipment is further influenced, the replacement mode of the carbon brush is very complicated, and the use efficiency of the equipment is greatly reduced.
To this end, a brush device for a small motor is proposed.
Disclosure of Invention
The invention aims to provide a brush device of a small motor, which is matched with an adjusting component through designing a brush component, so that the starting of a standby brush in a motor main body is realized, particularly, in an emergency maintenance work process of a hand-held electric drill, the whole motor main body is not required to be disassembled, and the normal use of the motor main body can be ensured by replacing a carbon brush, thereby improving the service efficiency of the device.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a small-size motor's brush device, includes motor main part and is located the pivot at motor main part preceding terminal surface middle part, motor main part's rear end face block fixedly connected with rear end cap, the inside of rear end cap is provided with the brush subassembly, the inside of brush subassembly is provided with the rotor sliding ring, the inside of rear end cap still is provided with the adjustment mechanism who is used for regulating and control the brush subassembly, through adjustment mechanism regulation and control brush main part, guarantee equipment normal operating need not to dismantle the motor main part in the short time and changes inside brush.
Preferably, the electric brush assembly comprises electric brush arms I symmetrically distributed in the rear end cover, the radian of each electric brush arm I is consistent with that of the rear end cover and is attached to the inner surface of the rear end cover, electric brush arms II of S-shaped structural design are fixedly connected to the two ends of each electric brush arm I, an electric brush main body is fixed to the other end of each electric brush arm II through a detachable connecting structure, and an electric connecting piece is arranged between each electric brush arm I and the rear end cover and is fixed through the electric connecting piece.
Preferably, the adjacent ends of the first brush arm are respectively provided with a third brush arm, the middle position of the third brush arm is provided with a movable groove, the adjusting mechanism penetrates through the movable groove and is movably connected with the third brush arm, the first brush arm, the second brush arm and the third brush arm are respectively formed by high-toughness metal copper, and the first brush arm and the third brush arm are integrally connected with each other to form an annular structure, and the first brush arm and the second brush arm are elastically attached and fixed in the rear end cover.
Preferably, the adjusting mechanism comprises an annular groove formed in the inner wall of the rear end cover, a driving ring matched with the annular groove is rotationally connected in the annular groove, an adjusting component is connected with the driving ring in a threaded mode, the adjusting component is located between two adjacent brush arms one, and the lower end of the adjusting component passes through a movable groove formed in the brush arms three.
Preferably, the adjusting component comprises an adjusting column vertically connected with the driving ring in a threaded mode, an insulating column is arranged at the lower end of the adjusting column, a ceramic ball is fixedly connected to the lower end face of the insulating column, the upper end of the adjusting column penetrates through the rear end cover and extends to the outer surface of the rear end cover, and the ceramic ball and the adjusting column in a silent state are located between the two second electric brush arms.
Preferably, the screw thread groove has been seted up to the inside of adjusting the post, and the inside threaded connection of screw thread groove has the threaded rod, the lower extreme and the insulating post of threaded rod are fixed, the screw thread groove upper end in the adjusting the post is the opening form, the quantity of adjusting the subassembly is two sets of, and the symmetric distribution is at the inner wall of rear end cap, and two drive assembly all with the perpendicular fixed connection of actuating ring.
Preferably, the outer surface of the rear end cover and the positions corresponding to the two adjusting assemblies are provided with limiting mechanisms, and the positions of the adjusting assemblies are limited through the limiting mechanisms, so that the state of the electric brush assembly is limited.
Preferably, the stop gear is including seting up the spacing groove at rear end cap surface, the inside symmetric distribution in spacing groove has protruding first and protruding second of rubber material, and both structural shapes are the same, the one-to-one, adjacent protruding first and protruding second between be annular design and with the unanimous laminating design of adjusting post surface arc.
Preferably, the electric connector comprises annular pins arranged on the front side and the rear side of the first electric brush arm, the first electric brush arm is of a U-shaped structural design, corresponds to the driving ring in position and is not contacted with the driving ring, the pins on the two sides of the first electric brush arm are respectively provided with a U-shaped electrode plate I and an electrode plate II which are respectively skimmed with the pins, the electrode plates I, the electrode plates II and the rear end cover are fixed, and the pins are clamped and fixed in the electrode plates I and the electrode plates II.
Preferably, the rear end face of the rear end cover is annularly and equidistantly distributed with radiating holes, the rear end face of the rear end cover is fixedly provided with a wiring terminal, and the electrode sheet I and the electrode sheet II are electrically connected with the wiring terminal fixed on the rear end face of the rear end cover.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, through designing the electric brush assembly, arranging the electric brush assembly in the rear end cover, arranging four groups of electric brush main bodies in the rear end cover, enabling two groups of electric brush main bodies to be used in a silent state, once the electric brush main bodies are excessively consumed and can not support the motor main body to normally operate, a user does not need to disassemble the motor main bodies to replace internal carbon brushes, and the two groups of electric brush main bodies are enabled by the adjusting assembly, so that the normal operation of the motor main bodies can be ensured, and especially, the working efficiency can be improved and the service efficiency of the device can be increased for equipment such as a maintenance tool handheld drilling machine suitable for emergency maintenance;
2. compared with the traditional brush assembly 3 component, the structure is more convenient for a user to detach and replace the brush assembly by designing the brush assembly and the electric connecting piece for fixing the brush assembly, thereby effectively improving the practicability of the device and reducing the complicated maintenance degree.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 2 in accordance with the present invention;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 2 in accordance with the present invention;
fig. 6 is a perspective view of the rear cover of the present invention.
Reference numerals illustrate:
1. a motor main body; 11. a rotating shaft; 12. a rotor slip ring;
2. a rear end cover; 21. a heat radiation hole;
3. a brush assembly; 31. a first brush arm; 311. pins; 32. a second brush arm; 33. a brush body; 34. a third brush arm; 35. a movable groove;
4. An adjusting mechanism; 41. a drive ring; 42. an annular groove; 43. an adjustment assembly;
431. An adjusting column; 432. an insulating column; 433. ceramic balls; 434. a threaded rod; 435. a thread groove;
6. a limiting mechanism; 61. a limit groove; 62. a first bulge; 63. a second protrusion;
71. an electrode sheet I; 72. electrode plate two.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the brush device of the small motor, the problems that in the prior art, a carbon brush is used as a vulnerable part, contacts and rubs with a rotor slip ring in the long-time use process, and a user needs to replace the carbon brush in the motor regularly along with continuous friction consumption of the carbon brush, however, in the actual use process, the brush device is particularly aimed at equipment such as a hand electric drilling machine, the brush device is used as a main maintenance tool of mechanical equipment, the use frequency is high, the carbon brush loss in the internal motor is larger, the driving of the motor is influenced to further influence the use of the equipment once the carbon brush is consumed to a certain extent in the daily maintenance process, the replacement mode of the carbon brush is very complicated, and the use efficiency of the equipment is greatly reduced are solved;
The technical scheme in the embodiment of the invention aims to solve the technical problems, and the overall thought is as follows: according to the invention, through designing the electric brush assembly, arranging the electric brush assembly in the rear end cover, arranging four groups of electric brush main bodies in the rear end cover, enabling two groups of electric brush main bodies to be used in a silent state, once the electric brush main bodies are excessively consumed and can not support the motor main body to normally operate, a user does not need to disassemble the motor main bodies to replace internal carbon brushes, and the two groups of electric brush main bodies are enabled by the adjusting assembly, so that the normal operation of the motor main bodies can be ensured, and especially, the working efficiency can be improved and the service efficiency of the device can be increased for equipment such as a maintenance tool handheld drilling machine suitable for emergency maintenance; compared with the traditional brush assembly 3 component, the structure is more convenient for a user to detach and replace the brush assembly by designing the brush assembly and the electric connecting piece for fixing the brush assembly, thereby effectively improving the practicability of the device and reducing the complicated maintenance degree.
In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and specific embodiments;
Referring to fig. 1 to 6, the present invention provides a technical solution:
the utility model provides a small-size motor's brush device, includes motor main part 1 and is located the pivot 11 at terminal surface middle part before the motor main part 1, the rear end face block fixedly connected with rear end cap 2 of motor main part 1, the inside of rear end cap 2 is provided with brush subassembly 3, the inside of brush subassembly 3 is provided with rotor sliding ring 12, the inside of rear end cap 2 still is provided with the adjustment mechanism 4 that is used for regulating and controlling brush subassembly 3, through adjustment mechanism 4 regulation and control brush main part 33, guarantee equipment normal operating need not to dismantle the inside brush of change to motor main part 1 in the short time.
Through adopting the technical scheme, through designing the electric brush assembly 3, arranging the electric brush assembly 3 in the rear end cover 2, arranging four groups of electric brush main bodies 33 in the rear end cover 2, starting two groups of electric brush main bodies 33 to use in a silent state, and once the consumption is too large to support the normal operation of the built-in rotor of the motor main body 1, a user does not need to disassemble the motor main body 1 to replace an internal carbon brush, and starting the two groups of electric brush main bodies 33 for standby through the adjusting assembly 43, so that the normal operation of the motor main body 1 can be ensured, and particularly, the working efficiency and the service efficiency of the device can be improved for the handheld drilling machine of a maintenance tool suitable for the emergency maintenance state.
As an embodiment of the present invention, as shown in fig. 2, the brush assembly 3 includes a first brush arm 31 symmetrically distributed in the rear end cover 2, the arc of the first brush arm 31 is consistent with the arc of the rear end cover 2 and is attached to the inner surface of the rear end cover 2, two ends of the first brush arm 31 are fixedly connected with a second brush arm 32 with an S-shaped structure, the other end of the second brush arm 32 is fixedly connected with a brush main body 33 through a detachable connection structure, an electrical connector is provided between the first brush arm 31 and the rear end cover 2, and is fixed through the electrical connector, a third brush arm 34 is provided at the adjacent ends of the first brush arm 31, a movable slot 35 is provided at the middle position of the third brush arm 34, the adjusting mechanism 4 penetrates through the movable slot 35 and is movably connected with the third brush arm 34, the first brush arm 31, the second brush arm 32 and the third brush arm 34 are all made of high-toughness metal copper, and are integrally connected with each other, and the first brush arm 31 and the third brush arm 34 are jointly formed into a ring-shaped structure and elastically attached to the rear end cover 2.
Through adopting above-mentioned technical scheme, during operation two groups of brush arm one 31, brush arm two 32 and brush arm three 34 are jointly constituteed annular structure elasticity laminating and are installed in the inside of rear end cap 2, four groups of brush main part 33 annular equidistance distributes in rotor sliding ring 12 outside this moment, then rear end cap 2 and motor main part 1 block are fixed, the user adjusts one brush main part 33 and rotor sliding ring 12 laminating contact on two groups of brush arm two 32 through adjustment mechanism 4, realize motor main part 1's normal start-up demand, and extra two groups of brush main part 33 then distribute outside rotor sliding ring 12 and do not contact with rotor sliding ring 12, use as the reserve brush, once as normal use's brush main part 33 finishes, can not be as normal motor main part 1 start-up demand when using, the user can enable reserve brush main part 33 through adjustment mechanism 4, the use of brush arm three 34 simultaneously, not only can connect two groups of brush arm one 31 elasticity laminating and be fixed in rear end cap 2, increase the effect of brush assembly 3, simultaneously can reduce the whole range of brush assembly 3 in the later stage use process and make the brush main part that brush assembly 3's whole range can vibrate the sliding ring 12 very well contact.
As an embodiment of the present invention, as shown in fig. 2 and 4, the adjusting mechanism 4 includes an annular groove 42 formed on the inner wall of the rear end cover 2, a driving ring 41 matched with the annular groove 42 is rotatably connected inside the annular groove 42, an adjusting component 43 is connected inside the driving ring 41 in a threaded manner, the adjusting component 43 is located between two adjacent brush arms 31, and the lower end of the adjusting component 43 passes through a movable groove 35 formed inside the brush arm three 34.
Through adopting above-mentioned technical scheme, based on above-mentioned embodiment, when the user is in use, through the adjusting component 43 that the rear end cover 2 outside exposes clockwise or anticlockwise rotation on rear end cover 2, carry the annular rotation of drive ring 41 in ring channel 42 this moment, utilize the displacement rotation of adjusting component 43 after the rotation, extrude inside brush arm two 32 of rear end cover 2, make brush arm two 32 buckle, and then will be connected with brush main part 33 and rotor sliding ring 12 that brush arm two 32 one end is connected and provide energy transmission for motor main part 1 normal start.
As an embodiment of the present invention, as shown in fig. 4, the adjusting component 43 includes an adjusting post 431 vertically screwed with the driving ring 41, an insulating post 432 is disposed at a lower end of the adjusting post 431, a ceramic ball 433 is fixedly connected to a lower end surface of the insulating post 432, an upper end of the adjusting post 431 penetrates through the rear end cover 2 and extends to an outer surface of the rear end cover 2, the ceramic ball 433 and the adjusting post 431 in a silent state are located between the two brush arms 32, a threaded groove 435 is formed in an inner portion of the adjusting post 431, a threaded rod 434 is connected with an inner thread of the threaded groove 435, a lower end of the threaded rod 434 is fixed with the insulating post 432, an upper end of the threaded groove 435 in the adjusting post 431 is in an opening shape, the number of the adjusting components 43 is two, the adjusting components are symmetrically distributed on an inner wall of the rear end cover 2, and the two driving components are vertically and fixedly connected with the driving ring 41.
By adopting the above technical solution, based on the above embodiment, when the user drives the two groups of adjusting posts 431 exposed outside the rear end cover 2 to rotate, the ceramic balls 433 located inside the rear end cover 2 and connected with the adjusting posts 431 through the insulating posts 432 approach and contact the two groups of brush arms 32 respectively, the ceramic balls 433 squeeze the brush arms 32, force the brush arms 32 to elastically deform and bend, and then the brush body 33 at one end of the brush arms 32 contacts with the rotor slip ring 12, however, the brush arms 32 are squeezed for a long time, the elastic potential energy of the brush arms themselves is reduced, so that the brush body 33 cannot well contact with the rotor slip ring 12, and therefore, the user can also enter the insulating posts 432 screwed with the screw grooves 435 through the screw grooves 435 by an external tool through the screw grooves 435, so as to adjust the common length of the insulating posts 432 and the adjusting posts 431, ensure that the squeezing force of the brush arms 32 is greater in the later use process, and ensure that the brush body 33 is better attached to the surface of the rotor slip ring 12, and ensure that the motor body 1 is normally started.
As an embodiment of the present invention, as shown in fig. 3, the outer surface of the rear end cover 2 and the positions corresponding to the two adjusting assemblies 43 are respectively provided with a limiting mechanism 6, the positions of the adjusting assemblies 43 are limited by the limiting mechanisms 6, so as to further limit the state of the brush assembly 3, the limiting mechanisms 6 include limiting grooves 61 formed on the outer surface of the rear end cover 2, the inside of each limiting groove 61 is symmetrically provided with a first protrusion 62 and a second protrusion 63 made of rubber materials, the two protrusions have the same structural shape, are in one-to-one correspondence, and are in an annular design between the adjacent first protrusions 62 and the adjacent second protrusions 63 and are in an arc-shaped consistent fit design with the outer surface of the adjusting column 431.
By adopting the above technical solution, based on the above embodiment, after the operation of the adjusting mechanism 4, the rotation angle of the adjusting component 43 in the adjusting mechanism 4 needs to be limited, so that the extrusion state of the ceramic ball 433 to the brush arm two 32 can be limited, and the brush main body 33 connected with one end of the brush arm two 32 is guaranteed to be well contacted with the rotor slip ring 12, therefore, when the adjusting column 431 in the adjusting component 43 is rotated, the upper end of the adjusting column 431 is displaced in the limiting groove 61 and extrudes the protrusion one 62 and the protrusion two 63 of the rubber material, and is displaced into the notch between the adjacent protrusion one 62 and the protrusion two 63, so as to fix the adjusting column 431.
As an embodiment of the present invention, as shown in fig. 5 and 6, the electrical connection piece includes annular pins 311 disposed on front and rear sides of the first brush arm 31, the first brush arm 31 is in a U-shaped structure, and is in position correspondence with the driving ring 41 and is not in contact with the driving ring, the pins 311 on both sides of the first brush arm 31 are respectively provided with a U-shaped electrode sheet 71 and an electrode sheet two 72, which are skimming with the first brush arm, the electrode sheet one 71 and the electrode sheet two 72 are fixed with the rear end cover 2, the pins 311 are fastened and fixed in the electrode sheet one 71 and the electrode sheet two 72, the rear end surface of the rear end cover 2 is annularly and equidistantly distributed with heat dissipation holes 21, and the rear end surface of the rear end cover 2 is fixed with a connection terminal, and the electrode sheet one 71 and the electrode sheet two 72 are electrically connected with the connection terminal fixed with the rear end surface of the rear end cover 2.
Through adopting above-mentioned technical scheme, based on above-mentioned embodiment, brush subassembly 3 only relies on self elasticity laminating to fix inside rear end cover 2, can not guarantee the fixed effect of brush subassembly 3 in long-time use, therefore when installing brush subassembly 3, the user blocks the pin 311 of brush arm one 31 rear end to the electrode slice two 72 insidely of U type structure, then continue to push backward and make brush arm one 31 deformation buckle, until the pin 311 grafting block of brush arm one 31 front end is to electrode slice one 71, accomplish the fixed to brush subassembly 3, and the electric connection state, guarantee the normal use of brush subassembly 3.
Working principle: during operation, the first brush arm 31, the second brush arm 32 and the third brush arm 34 form an annular structure together to be elastically attached and installed in the rear end cover 2, at the moment, four groups of brush bodies 33 are annularly and equidistantly distributed on the outer side of the rotor slip ring 12, then the rear end cover 2 is clamped and fixed with the motor body 1, a user adjusts one brush body 33 on the second brush arm 32 through the adjusting mechanism 4 to be attached and contacted with the rotor slip ring 12, so that the normal starting requirement of the motor body 1 is realized, the additional two groups of brush bodies 33 are distributed on the outer side of the rotor slip ring 12 and are not contacted with the rotor slip ring 12 to be used as standby brushes, once the brush bodies 33 used normally are consumed, and when the motor body 1 can not be started as normal starting requirement, a user can start the standby brush bodies 33 to be used normally through the adjusting mechanism 4, and meanwhile, the use of the third brush arms 34 can be connected with the first brush body 31 to be elastically attached and fixed with the rear end cover 2, the stabilizing effect of the assembly 3 is improved, and the whole vibration amplitude of the brush assembly 3 can be reduced in the later use process, so that the brush bodies 33 can well contact the rotor slip ring 12;
When in use, a user rotates clockwise or anticlockwise on the rear end cover 2 through the exposed adjusting component 43 on the outer side of the rear end cover 2, at the moment, the carrying driving ring 41 rotates in an annular way in the annular groove 42, and the rotating adjusting component 43 is utilized to displace and rotate to squeeze the second brush arm 32 in the rear end cover 2, so that the second brush arm 32 is bent, and the brush main body 33 connected with one end of the second brush arm 32 is contacted with the rotor slip ring 12 and provides energy transfer for the normal starting of the motor main body 1;
When a user drives two groups of adjusting posts 431 exposed on the outer side of the rear end cover 2 to rotate, ceramic balls 433 which are positioned in the rear end cover 2 and are connected with the adjusting posts 431 through insulating posts 432 are respectively close to and contact with two groups of second brush arms 32, the second brush arms 32 are extruded by the ceramic balls 433 to force the second brush arms 32 to elastically deform and bend, so that a brush main body 33 at one end of the second brush arms 32 is in contact with a rotor slip ring 12, however, the second brush arms 32 are extruded for a long time, the elastic potential energy of the second brush arms can be reduced, so that the brush main body 33 cannot be in good contact with the rotor slip ring 12, and therefore, the user can also enter the insulating posts 432 which are screwed with the screw grooves 435 through screw grooves 435 in an external opening of the adjusting posts 431 through an external tool, so that the common length of the insulating posts 432 and the adjusting posts 431 is adjusted, the extrusion force of the second brush arms 32 is larger in the later use process, the brush main body 33 is ensured to be better attached and fixed on the surface of the rotor slip ring 12, and the motor main body 1 is normally started;
After the regulating mechanism 4 operates, the rotation angle of the regulating component 43 in the regulating mechanism 4 needs to be limited, so that the extrusion state of the ceramic ball 433 to the second brush arm 32 can be limited, and the brush main body 33 connected with one end of the second brush arm 32 is guaranteed to be well contacted with the rotor slip ring 12, therefore, when the regulating column 431 in the regulating component 43 rotates, the upper end of the regulating column 431 displaces in the limiting groove 61 and extrudes the first protrusion 62 and the second protrusion 63 which are made of rubber materials, and the regulating column 431 displaces into a notch between the adjacent first protrusion 62 and the second protrusion 63, so that the fixing of the regulating column 431 is realized;
The brush assembly 3 is only fixed inside the rear end cover 2 by means of self elastic bonding, and the fixing effect of the brush assembly 3 cannot be guaranteed in the long-time use process, so that when the brush assembly 3 is installed, a user clamps the pin 311 at the rear end of the first brush arm 31 inside the electrode plate II 72 of the U-shaped structure, then continues pushing backwards to deform and bend the first brush arm 31 until the pin 311 at the front end of the first brush arm 31 is spliced and clamped to the electrode plate I71, the fixing of the brush assembly 3 and the electric connection state are completed, and the normal use of the brush assembly 3 is guaranteed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. The utility model provides a brush device of small-size motor, includes motor main part (1) and is located pivot (11) at terminal surface middle part before motor main part (1), its characterized in that:
the motor comprises a motor main body (1), wherein a rear end cover (2) is fixedly connected to the rear end surface of the motor main body in a clamping manner, an electric brush assembly (3) is arranged in the rear end cover (2), and a rotor slip ring (12) is arranged in the electric brush assembly (3);
An adjusting mechanism (4) for adjusting and controlling the electric brush assembly (3) is further arranged in the rear end cover (2), and the electric brush main body (33) is adjusted and controlled through the adjusting mechanism (4), so that the normal operation of the equipment is ensured, and the motor main body (1) does not need to be disassembled and replaced for a short time;
The electric brush assembly (3) comprises electric brush arms I (31) symmetrically distributed in the rear end cover (2), wherein the radian of the electric brush arms I (31) is consistent with that of the rear end cover (2) and is attached to the inner surface of the rear end cover (2), two ends of the electric brush arms I (31) are fixedly connected with electric brush arms II (32) with S-shaped structural design, the other ends of the electric brush arms II (32) are fixedly provided with electric brush main bodies (33) through detachable connection structures, and electric connectors are arranged between the electric brush arms I (31) and the rear end cover (2) and are fixed through the electric connectors;
The two brush arms I (31) and II (32) and the brush arm III (34) are all composed of high-toughness metal copper, and are integrally connected, the two brush arms I (31) and II (34) form an annular structure together, and the annular structure is elastically attached and fixed in the rear end cover (2);
The adjusting mechanism (4) comprises an annular groove (42) formed in the inner wall of the rear end cover (2), a driving ring (41) matched with the annular groove is rotatably connected in the annular groove (42), an adjusting component (43) is connected in the driving ring (41) in a threaded mode, the adjusting component (43) is located between two adjacent brush arms (31), and the lower end of the adjusting component (43) passes through a movable groove (35) formed in the brush arm III (34);
The adjusting component (43) comprises an adjusting column (431) which is vertically connected with the driving ring (41) in a threaded mode, an insulating column (432) is arranged at the lower end of the adjusting column (431), a ceramic ball (433) is fixedly connected to the lower end face of the insulating column (432), the upper end of the adjusting column (431) penetrates through the rear end cover (2) and extends to the outer surface of the rear end cover (2), and the ceramic ball (433) and the adjusting column (431) in a silent state are located between the two brush arms (32).
2. A brush assembly for a miniature motor as set forth in claim 1 wherein: the screw thread groove (435) has been seted up to the inside of adjusting post (431), and the inside threaded connection of screw thread groove (435) has threaded rod (434), the lower extreme and the insulating post (432) of threaded rod (434) are fixed, the screw thread groove (435) upper end in adjusting post (431) is the opening form, the quantity of adjusting part (43) is two sets of, and the symmetric distribution is at the inner wall of rear end cap (2) to two drive assembly all with drive ring (41) perpendicular fixed connection.
3. A brush assembly for a miniature motor as set forth in claim 1 wherein: the outer surface of the rear end cover (2) and the positions corresponding to the two adjusting assemblies (43) are respectively provided with a limiting mechanism (6), and the positions of the adjusting assemblies (43) are limited through the limiting mechanisms (6), so that the state of the electric brush assembly (3) is limited.
4. A brush assembly for a miniature motor as set forth in claim 3 wherein: the limiting mechanism (6) comprises limiting grooves (61) formed in the outer surface of the rear end cover (2), protrusions first (62) and protrusions second (63) which are made of rubber materials are symmetrically distributed in the limiting grooves (61), the two structures are identical in shape and correspond to each other one by one, and adjacent protrusions first (62) and protrusions second (63) are in annular design and are in arc-shaped fit with the outer surface of the adjusting column (431).
5. A brush assembly for a miniature motor as set forth in claim 1 wherein: the electric connector comprises annular pins (311) arranged on the front side and the rear side of a first electric brush arm (31), the first electric brush arm (31) is of a U-shaped structural design, corresponds to the position of a driving ring (41) and is not contacted with the driving ring, the pins (311) on the two sides of the first electric brush arm (31) are respectively provided with a first U-shaped electrode sheet (71) and a second electrode sheet (72) which are respectively peeled off, the first electrode sheet (71) and the second electrode sheet (72) are fixed with a rear end cover (2), and the pins (311) are clamped and fixed in the first electrode sheet (71) and the second electrode sheet (72).
6. A brush assembly for a miniature motor as set forth in claim 1 wherein: the rear end face of the rear end cover (2) is annularly and equidistantly provided with radiating holes (21), the rear end face of the rear end cover (2) is fixedly provided with a wiring terminal, and the first electrode sheet (71) and the second electrode sheet (72) are electrically connected with the wiring terminal fixed on the rear end face of the rear end cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210194349.8A CN114614315B (en) | 2022-03-01 | 2022-03-01 | Brush device of small motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210194349.8A CN114614315B (en) | 2022-03-01 | 2022-03-01 | Brush device of small motor |
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| Publication Number | Publication Date |
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| CN114614315A CN114614315A (en) | 2022-06-10 |
| CN114614315B true CN114614315B (en) | 2024-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210194349.8A Active CN114614315B (en) | 2022-03-01 | 2022-03-01 | Brush device of small motor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117477869B (en) * | 2023-12-27 | 2024-03-22 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
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| US4587384A (en) * | 1984-07-12 | 1986-05-06 | Black & Decker, Inc. | Sub-assembly for electric motor including reversing switch |
| DE4430954A1 (en) * | 1994-08-31 | 1996-03-07 | Teves Gmbh Alfred | Brush support plate and electric motor with such a brush support plate |
| JP3803014B2 (en) * | 2000-07-05 | 2006-08-02 | 株式会社マキタ | Electric tool |
| FR2813719B1 (en) * | 2000-09-06 | 2003-08-15 | Meritor Light Vehicle Sys Ltd | ELECTRIC MOTOR EQUIPPED WITH MEANS FOR AUTOMATIC RELEASE OF THE POWER BRUSHES |
| DE10059680A1 (en) * | 2000-12-01 | 2002-06-06 | Bosch Gmbh Robert | Starting device for use in internal combustion engines has an electric starter motor with a rotor supplied with current by means of brushes sliding on a commutator |
| JP4882189B2 (en) * | 2001-09-10 | 2012-02-22 | 株式会社Ｇｓユアサ | Motor with brush |
| JP3960135B2 (en) * | 2002-06-12 | 2007-08-15 | 株式会社日立製作所 | Brush motor for vehicle drive device and control method thereof |
| JP2009095153A (en) * | 2007-10-10 | 2009-04-30 | Denso Corp | Ac power generator for vehicle |
| JP2013034342A (en) * | 2011-08-03 | 2013-02-14 | Asmo Co Ltd | Brush and motor with the same |
| CN202268764U (en) * | 2011-10-28 | 2012-06-06 | 宁波中大力德传动设备有限公司 | Integration of brush carrier and end cover |
| CN203896124U (en) * | 2014-06-17 | 2014-10-22 | 浙江瑞申汽配有限公司 | Automobile starter brush assembly with contact force adjustable brushes |
| US11025126B2 (en) * | 2017-03-20 | 2021-06-01 | Netmotor (U.S.A.) Inc. | Brushed DC motor and manufacturing method thereof |
| CN206595816U (en) * | 2017-03-28 | 2017-10-27 | 艾司匹技电机（苏州）有限公司 | A kind of brush rocker structure of brush motor |
| CN206894407U (en) * | 2017-06-14 | 2018-01-16 | 余姚市驰力微电机有限公司 | A kind of low-voltage direct micro machine |
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Effective date of registration: 20240924 Address after: 422700 Yong'an Industrial Park, Jinshi Town, Xinning County, Shaoyang City, Hunan Province Applicant after: XINNING COUNTY JINXIN ELECTRONIC Co.,Ltd. Country or region after: China Address before: 210000 Room 502, building 4, Longfeng rose garden, 163 Fenghuang West Street, Gulou District, Nanjing, Jiangsu Province Applicant before: Li Zejun Country or region before: China |
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