CN114614315A - Electric brush device of small motor - Google Patents
Electric brush device of small motor Download PDFInfo
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- CN114614315A CN114614315A CN202210194349.8A CN202210194349A CN114614315A CN 114614315 A CN114614315 A CN 114614315A CN 202210194349 A CN202210194349 A CN 202210194349A CN 114614315 A CN114614315 A CN 114614315A
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- brush
- rear end
- adjusting
- end cover
- brush arm
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- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 239000000919 ceramic Substances 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 6
- 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
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 23
- 229910052799 carbon Inorganic materials 0.000 abstract description 23
- 238000012423 maintenance Methods 0.000 abstract description 13
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000701 coagulant Substances 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
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- 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
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- 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 the rear end face of the motor main body is fixedly connected with a rear end cover 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 also arranged in the rear end cover. According to the invention, the brush components are designed, the two groups of brush main bodies are started to be used in a silent state, once the consumption is too large to support the normal operation of the built-in rotor of the motor main body, a user does not need to disassemble the motor main body to replace the internal carbon brush, the two groups of spare brush main bodies are started through the adjusting component, the normal operation of the motor main body can be ensured, and particularly for equipment such as a maintenance tool handheld drilling machine in an emergency maintenance state, the working efficiency can be improved, and the use efficiency of the device is increased.
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 or an engine. The working principle is that a starter rotor is driven to rotate by the forced rotation of an electrified coil in a magnetic field, a pinion on the rotor drives an engine flywheel to rotate, and a motor is used as an important mechanical driving device and widely applied to various mechanical equipment;
the carbon brush, also known as an electric brush, is a device for transmitting energy or signals between a fixed part (a shell) and a rotating part (a slip ring) of a motor, is generally made of pure carbon and a coagulant, is generally square in shape, and is clamped on a metal bracket. The carbon brush generally comprises a carbon brush body and a carbon brush arm which has elasticity and is used for fixing the carbon brush body, wherein a wire is led out of the carbon brush body and is connected with a copper sheet, and the wire is connected with the carbon brush body in a general mode that the wire is fused in the carbon brush body during preparation;
however, in the actual use process, especially for the hand-held electric drilling machine and the like, the carbon brush is used as a main maintenance tool of mechanical equipment, the use frequency of the carbon brush is high, the loss of the carbon brush in the internal motor is larger, once the carbon brush is consumed to a certain degree 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 an electric brush device of a small motor, which can start a spare electric brush in a motor main body by designing an electric brush component to be matched with an adjusting component, particularly for a handheld electric drill, the normal use of the motor main body can be ensured without disassembling the whole motor main body and replacing a carbon brush in the emergency maintenance process, so that the use efficiency of the device is improved.
In order to achieve the purpose, the invention provides the following technical scheme: 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, the rear end face block fixedly connected with rear end cap of motor main part, 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 brush subassembly, regulates and control brush main part through adjustment mechanism, and guarantee equipment normal operating need not to dismantle the change inside brush to motor main part in the short time.
Preferably, the brush subassembly includes brush arm one of symmetric distribution in the rear end cap, a brush arm radian is unanimous and the rear end cap internal surface of laminating with the rear end cap internal arc, the equal fixedly connected with S type structural design' S in both ends brush arm two of brush arm one brush arm, the other end of brush arm two is fixed with the brush main part through dismantling connection structure, be provided with electric connector between brush arm one and the rear end cap to it is fixed through electric connector.
Preferably, two adjacent ends of the first brush arms are provided with a third brush arm, a movable groove is formed in the middle of the third brush arm, the adjusting mechanism penetrates through the movable groove and is movably connected with the third brush arm, the first brush arms, the second brush arms and the third brush arms are all made of high-toughness metal copper, the first brush arms, the second brush arms and the third brush arms are integrally connected, and the first brush arms and the second brush arms jointly form a ring structure and are elastically attached and fixed inside 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 rotatably connected inside the annular groove, an adjusting assembly is connected to the driving ring through internal threads, the adjusting assembly is located between two adjacent first brush arms, and the lower end of the adjusting assembly passes through a movable groove formed in the third brush arm.
Preferably, the adjusting assembly comprises an adjusting column in vertical threaded connection with the driving ring, 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 brush arms ii.
Preferably, the inside of adjusting the post is seted up the thread groove, and the inside threaded connection of thread groove has the threaded rod, the lower extreme and the insulating post of threaded rod are fixed, the thread groove upper end in the regulation post is the opening form, the quantity of adjusting part is two sets of, and the symmetric distribution is at the inner wall of rear end cover, and two drive assembly all with the perpendicular fixed connection of drive 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 limiting mechanism comprises a limiting groove formed in the outer surface of the rear end cover, a first protrusion and a second protrusion which are made of rubber materials are symmetrically distributed in the limiting groove, the first protrusion and the second protrusion are identical in structural shape and are in one-to-one correspondence, and the first protrusion and the second protrusion are adjacent to each other, are designed in an annular shape and are in consistent fit with the arc shape of the outer surface of the adjusting column.
Preferably, the electric connector comprises annular pins arranged on the front side and the rear side of a first electric brush arm, the first electric brush arm is in a U-shaped structural design, corresponds to the driving ring in position and is not in contact with the driving ring, the pins on the two sides of the first electric brush arm are respectively provided with a first U-shaped electrode plate and a second electrode plate which are peeled from the first electric brush arm, the first electrode plate and the second electrode plate are fixed with a rear end cover, and the pins are fixed inside the first electrode plate and the second electrode plate in a clamping manner.
Preferably, the rear end face of the rear end cover is annularly and equidistantly provided with heat dissipation holes, the rear end face of the rear end cover is fixedly provided with a wiring terminal, and the electrode plate I and the electrode plate 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, the brush assembly is designed, the brush assembly is arranged in the rear end cover, four groups of brush main bodies are arranged in the brush assembly, two groups of brush main bodies are started to use in a silent state, once the brush assembly is consumed too much and cannot support the normal operation of a rotor arranged in the motor main body, a user does not need to disassemble the motor main body to replace an internal carbon brush, the two groups of spare brush main bodies are started through the adjusting assembly, the normal operation of the motor main body can be ensured, and particularly for equipment such as a maintenance tool handheld drilling machine suitable for an emergency maintenance state, the working efficiency can be improved, and the use efficiency of the device is increased;
2. according to the invention, by designing the electric brush assembly and the electric connecting piece for fixing the electric brush assembly, compared with the traditional electric brush assembly 3 component, the structure is more convenient for a user to disassemble and replace the electric brush assembly, so that the practicability of the device is effectively improved, and the maintenance complexity is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
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 along line B-B of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view taken at C-C of FIG. 2 in accordance with the present invention;
FIG. 5 is a cross-sectional view taken at D-D of FIG. 2 in accordance with the present invention;
fig. 6 is a perspective view of the rear end cap of the present invention.
Description of reference numerals:
1. a motor main body; 11. a rotating shaft; 12. a rotor slip ring;
2. a rear end cap; 21. heat dissipation holes;
3. an electric brush assembly; 31. a first electric brush arm; 311. a pin; 32. a second electric brush arm; 33. a brush body; 34. a third electric brush arm; 35. a movable groove;
4. an adjustment mechanism; 41. a drive ring; 42. an annular groove; 43. an adjustment assembly;
431. an adjustment column; 432. an insulating column; 433. a ceramic ball; 434. a threaded rod; 435. a thread groove;
6. a limiting mechanism; 61. a limiting groove; 62. a first bulge; 63. a second bulge;
71. a first electrode plate; 72. and a second electrode plate.
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, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides an electric brush device of a small motor, and solves the technical problems that in the prior art, a carbon brush is used as a part easy to wear, the carbon brush is in contact friction with a rotor slip ring in the long-time use process, and a user needs to regularly replace the carbon brush in the motor along with the continuous friction consumption of the carbon brush;
in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: according to the invention, the brush assembly is designed, the brush assembly is arranged in the rear end cover, four groups of brush main bodies are arranged in the brush assembly, two groups of brush main bodies are started to use in a silent state, once the brush assembly is consumed too much and cannot support the normal operation of a rotor arranged in the motor main body, a user does not need to disassemble the motor main body to replace an internal carbon brush, the two groups of spare brush main bodies are started through the adjusting assembly, the normal operation of the motor main body can be ensured, and particularly for equipment such as a maintenance tool handheld drilling machine suitable for an emergency maintenance state, the working efficiency can be improved, and the use efficiency of the device is increased; according to the invention, by designing the electric brush assembly and the electric connecting piece for fixing the electric brush assembly, compared with the traditional electric brush assembly 3 component, the structure is more convenient for a user to disassemble and replace the electric brush assembly, so that the practicability of the device is effectively improved, and the maintenance complexity is reduced.
In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the drawings and the specific embodiments;
referring to fig. 1 to 6, the present invention provides a technical solution:
the utility model provides a small motor's brush device, includes motor main part 1 and is located the pivot 11 at motor main part 1 preceding terminal surface middle part, motor main part 1's rear end face block fixedly connected with rear end cap 2, the inside of rear end cap 2 is provided with brush subassembly 3, brush subassembly 3's inside is provided with rotor sliding ring 12, rear end cap 2's inside still is provided with the adjustment mechanism 4 that is used for regulating and control brush subassembly 3, regulates and control brush main part 33 through adjustment mechanism 4, and the guarantee equipment normal operating need not to dismantle change inside brush to motor main part 1 in the short time.
By adopting the technical scheme, the brush assembly 3 is designed, the brush assembly 3 is arranged in the rear end cover 2, the four groups of brush main bodies 33 are arranged in the brush assembly, the two groups of brush main bodies 33 are started to be used in a silent state, once the consumption is too large to support the normal operation of a 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, the two groups of spare brush main bodies 33 are started through the adjusting assembly 43, the normal operation of the motor main body 1 can be ensured, and particularly for equipment such as a maintenance tool handheld drilling machine suitable for being used in an emergency maintenance state, the working efficiency can be improved, and the using efficiency of the device is increased.
As an embodiment of the present invention, as shown in fig. 2, the brush assembly 3 includes brush arms one 31 symmetrically distributed in the rear end cap 2, the radian of the brush arm one 31 is consistent with the inner radian of the rear end cap 2 and is attached to the inner surface of the rear end cap 2, both ends of the brush arm one 31 are fixedly connected with brush arms two 32 designed in an S-shaped structure, the other ends of the brush arms two 32 are fixedly connected with a brush main body 33 through a detachable connection structure, an electrical connection member is arranged between the brush arms one 31 and the rear end cap 2 and is fixed through the electrical connection member, the adjacent ends of the brush arms one 31 are respectively provided with brush arms three 34, a movable groove 35 is arranged at the middle position of the brush arms three 34, the adjusting mechanism 4 penetrates through the movable groove 35 and is movably connected with the brush arms three 34, the brush arms one 31, the brush arms two 32 and the brush arms three 34 are all made of high-toughness metallic copper, and the three are integrally connected, and the two first brush arms 31 and the two third brush arms 34 jointly form a ring structure, and are elastically attached and fixed in the rear end cover 2.
By adopting the technical scheme, when the electric motor works, the two groups of first brush arms 31, the two groups of second brush arms 32 and the three groups of third brush arms 34 jointly form an annular structure and are elastically attached and installed in the rear end cover 2, at the moment, the 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 two groups of second brush arms 32 to be attached and contacted with the rotor slip ring 12 through the adjusting mechanism 4 to realize the normal starting requirement of the motor body 1, 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 a standby brush, once the brush body 33 used as the normal use is consumed and cannot be used as the normal motor body 1, the user can start the standby brush body 33 to be normally used through the adjusting mechanism 4, the use of brush arm three 34 simultaneously not only can connect two sets of brush arms 31 elasticity laminating and be fixed in rear end housing 2, increases brush subassembly 3's firm effect, can reduce brush subassembly 3's whole vibration range in the later stage use simultaneously for brush main part 33 can be fine contact rotor sliding ring 12.
As an embodiment of the present invention, as shown in fig. 2 and 4, the adjusting mechanism 4 includes an annular groove 42 formed in the inner wall of the rear end cover 2, a driving ring 41 matching with the annular groove 42 is rotatably connected to the inner side of the annular groove 42, an adjusting assembly 43 is threadedly connected to the inner side of the driving ring 41, the adjusting assembly 43 is located between two adjacent brush arms one 31, and the lower end of the adjusting assembly 43 passes through a movable groove 35 formed in the inner side of the brush arm three 34.
By adopting the technical scheme, based on the above embodiment, when the motor is used by a user, the adjusting assembly 43 exposed outside the rear end cover 2 rotates clockwise or counterclockwise on the rear end cover 2, at the moment, the driving ring 41 is carried to rotate annularly inside the annular groove 42, the rotating adjusting assembly 43 is used for displacement and rotation, and the second brush arm 32 inside the rear end cover 2 is extruded, so that the second brush arm 32 is bent, and then the brush body 33 connected with one end of the second brush arm 32 is contacted with the rotor slip ring 12 and provides energy transmission for the normal start of the motor body 1.
As an embodiment of the present invention, as shown in fig. 4, the adjusting assembly 43 includes an adjusting post 431 vertically screw-coupled to the driving ring 41, and the lower end of the adjusting column 431 is provided with an insulating column 432, the lower end surface of the insulating column 432 is fixedly connected with a ceramic ball 433, 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, the ceramic ball 433 and the adjusting column 431 in a silent state are positioned between the two brush arms two 32, a thread groove 435 is formed inside the adjusting column 431, and a threaded rod 434 is threadedly connected to the inside of the threaded groove 435, the lower end of the threaded rod 434 is fixed to the insulating post 432, the upper end of the thread groove 435 in the adjusting column 431 is open, the number of the adjusting components 43 is two, symmetrically distributed on the inner wall of the rear end cover 2, and both of the driving assemblies 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 sets of adjusting posts 431 exposed outside the rear end cap 2 to rotate, the ceramic balls 433 located inside the rear end cap 2 and connected with the adjusting posts 431 through the insulating posts 432 are respectively close to and contact with the two sets of brush arms two 32, and the ceramic balls 433 squeeze the brush arms two 32 to force the brush arms two 32 to elastically deform and bend, so as to make the brush main body 33 at one end of the brush arms two 32 contact with the rotor slip ring 12 in a fitting manner, however, when the brush arms two 32 are squeezed for a long time, the elastic potential energy of the brush arms two 32 will decrease, so that the brush main body 33 cannot well contact with the rotor slip ring 12, therefore, the user can enter the insulating posts 432 screwed with the thread grooves 435 through the external opening of the adjusting posts 431, so as to adjust the common length of the insulating posts 432 and the adjusting posts 431, the extrusion degree of the brush arm II 32 is larger in the later use process, the brush main body 33 is guaranteed to be better attached and fixed on the surface of the rotor slip ring 12, and the normal starting of the motor main body 1 is guaranteed.
As an embodiment of the present invention, as shown in fig. 3, the outer surface of the rear end cover 2 is provided with a limiting mechanism 6 at a position corresponding to the two adjusting assemblies 43, the position of the adjusting assemblies 43 is limited by the limiting mechanism 6, and the state of the brush assembly 3 is further limited, the limiting mechanism 6 includes a limiting groove 61 formed in the outer surface of the rear end cover 2, the first protrusions 62 and the second protrusions 63 made of rubber are symmetrically distributed in the limiting groove 61, the first protrusions 62 and the second protrusions 63 have the same structural shape and are in one-to-one correspondence, and the adjacent first protrusions 62 and the second protrusions 63 are in an annular design and are in an arc-shaped consistent fit design with the outer surface of the adjusting column 431.
Through adopting above-mentioned technical scheme, based on above-mentioned embodiment, adjustment mechanism 4 need be injectd the rotatory angle of adjusting part 43 in adjustment mechanism 4 after the operation to just can inject the extrusion state of ceramic ball 433 to two 32 of brush arms, guarantee that the brush main part 33 of being connected with two 32 one ends of brush arms is fine to contact with rotor sliding ring 12, consequently when adjusting post 431 in rotatory adjustment mechanism 43, the upper end of adjusting post 431 then at spacing groove 61 inside displacement and extrusion rubber material's protruding first 62 and protruding second 63, the displacement is to the notch between adjacent protruding first 62 and protruding second 63 in, realize fixing to adjusting post 431.
As an embodiment of the present invention, as shown in fig. 5 and 6, the electrical connector includes annular pins 311 disposed on front and rear sides of the first brush arm 31, the first brush arm 31 is designed in a U-shaped structure, corresponds to the position of 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 both provided with a U-shaped electrode plate first 71 and an electrode plate second 72 skimming on the pins, the first electrode plate 71 and the electrode plate second 72 are fixed to the rear end cover 2, the pins 311 are fixed to the first electrode plate 71 and the second electrode plate 72 in a snap-fit manner, equidistant heat dissipation holes 21 are circumferentially distributed on the rear end surface of the rear end cover 2, the rear end surface of the rear end cover 2 is fixed with a connection terminal, and the first electrode plate 71 and the second electrode plate 72 are electrically connected to the connection terminal fixed to 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 the elasticity laminating of self to be fixed inside rear end cap 2, can not guarantee brush subassembly 3's fixed effect in long-time use, consequently when installing brush subassembly 3, the user is inside with pin 311 block to two 72 electrode slices of U type structure of brush arm 31 rear end, then continue to promote backward and make brush arm 31 buckle, pin 311 grafting block to electrode slice 71 of brush arm 31 front end, accomplish the fixed to brush subassembly 3, and electric connection state, guarantee brush subassembly 3's normal use.
The working principle is as follows: when the electric brush is in work, the two groups of brush arms I31, the two groups of brush arms II 32 and the three groups of brush arms III 34 jointly form an annular structure and are elastically attached and installed in the rear end cover 2, at the moment, the 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 fixedly clamped with the motor body 1, a user adjusts one brush body 33 on the two groups of brush arms II 32 to be attached and contacted with the rotor slip ring 12 through the adjusting mechanism 4 to meet the normal starting requirement of the motor body 1, 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 a standby brush, once the brush bodies 33 which are normally used are consumed and cannot be used as the normal motor body 1, the user can start the standby brush body 33 to be normally used through the adjusting mechanism 4 and use the three brush arms 34 simultaneously, the two groups of brush arms I31 can be connected and elastically attached to and fixed on the rear end cover 2, the stabilizing effect of the brush assembly 3 is improved, and meanwhile, the overall vibration amplitude of the brush assembly 3 in the later use process can be reduced, so that the brush main body 33 can well contact with the rotor slip ring 12;
when a user uses the motor, the adjusting assembly 43 exposed on the outer side of the rear end cover 2 rotates clockwise or anticlockwise on the rear end cover 2, the driving ring 41 is carried to rotate annularly in the annular groove 42, the rotating adjusting assembly 43 is used for displacement and rotation, and the second brush arm 32 in the rear end cover 2 is extruded, 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 transmission for normal starting of the motor main body 1;
when a user drives the two groups of adjusting columns 431 exposed outside the rear end cover 2 to rotate, the ceramic balls 433 which are positioned inside the rear end cover 2 and connected with the adjusting columns 431 through the insulating columns 432 are respectively close to and contact the two groups of brush arms two 32, the ceramic balls 433 are utilized to press the two brush arms two 32 to force the two brush arms two 32 to elastically deform and bend, and then the brush main body 33 at one end of the two brush arms two 32 is in contact with the rotor slip ring 12 in an attaching manner, however, the two brush arms two 32 are pressed for a long time, the elastic potential energy of the two brush arms two 32 can be reduced, and the brush main body 33 can not be in good contact with the rotor slip ring 12, so that the user can enter the insulating column 432 screwed and connected with the thread groove 435 through the thread groove 435 opened outside the adjusting columns 431 through an external tool, thereby adjusting the common length of the insulating column 432 and the adjusting columns 431, and enabling the extrusion force degree on the two brush arms 32 to be larger in the later use process, the electric brush main body 33 is ensured to be better attached and fixed on the surface of the rotor slip ring 12, and the normal starting of the motor main body 1 is ensured;
after the adjusting mechanism 4 operates, the rotating angle of the adjusting assembly 43 in the adjusting mechanism 4 needs to be limited, so that the extrusion state of the ceramic ball 433 on 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 adjusting column 431 in the adjusting assembly 43 is rotated, the upper end of the adjusting column 431 is displaced in the limiting groove 61 and extrudes the first bulge 62 and the second bulge 63 made of rubber materials, and is displaced into a notch between the adjacent first bulge 62 and the second bulge 63, so that the fixing of the adjusting column 431 is realized;
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a brush device of small-size motor, includes motor main part (1) and is located pivot (11) of motor main part (1) preceding terminal surface middle part, its characterized in that:
the rear end face of the motor main body (1) is fixedly connected with a rear end cover (2) in a clamping mode, a brush assembly (3) is arranged inside the rear end cover (2), and a rotor sliding ring (12) is arranged inside the brush assembly (3);
the inside of rear end cap (2) still is provided with adjustment mechanism (4) that are used for regulating and control brush subassembly (3), regulates and control brush main part (33) through adjustment mechanism (4), and guarantee equipment normal operating need not to dismantle the inside brush of change to motor main part (1) in the short time.
2. A brush gear for a small-sized motor according to claim 1, wherein: brush subassembly (3) are including the brush arm one (31) of symmetric distribution in rear end housing (2), the unanimous rear end housing (2) internal surface of laminating of arc in brush arm one (31) radian and rear end housing (2), the equal fixedly connected with brush arm two (32) of S type structural design in both ends of brush arm one (31), the other end of brush arm two (32) is fixed with brush main part (33) through dismantling connection structure, be provided with electric connector between brush arm one (31) and rear end housing (2) to it is fixed through electric connector.
3. A brush gear for a small-sized motor according to claim 2, wherein: two the adjacent end of brush arm one (31) all is provided with brush arm three (34), and the intermediate position of brush arm three (34) has seted up movable groove (35), adjustment mechanism (4) run through movable groove (35) and with brush arm three (34) swing joint, brush arm one (31), brush arm two (32) and brush arm three (34) all adopt high tenacity metal copper to constitute to the integral type of three is connected the structure, two brush arm one (31) and two brush arm three (34) constitute the inside that annular structure elasticity laminating was fixed in rear end cap (2) jointly.
4. A brush gear for a small-sized motor according to claim 1, wherein: 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 (42) is connected to the inner portion of the annular groove (42) in a rotating mode, an adjusting assembly (43) is connected to the inner portion of the driving ring (41) in a threaded mode, the adjusting assembly (43) is located between every two adjacent brush arms I (31), and the lower end of the adjusting assembly (43) passes through a movable groove (35) formed in the brush arm III (34).
5. A brush gear for a small-sized motor according to claim 1, wherein: the adjusting assembly (43) comprises an adjusting column (431) which is vertically in threaded connection with the driving ring (41), 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).
6. A brush gear for a small-sized motor according to claim 5, wherein: the inner part of the adjusting column (431) is provided with a thread groove (435), the inner thread of the thread groove (435) is connected with a threaded rod (434), the lower end of the threaded rod (434) is fixed with the insulating column (432), the upper end of the thread groove (435) in the adjusting column (431) is open, the number of the adjusting assemblies (43) is two, the adjusting assemblies are symmetrically distributed on the inner wall of the rear end cover (2), and the two driving assemblies are vertically and fixedly connected with the driving ring (41).
7. A brush gear for a small-sized motor according to claim 1, wherein: the outer surface of the rear end cover (2) corresponds to the two adjusting assemblies (43) and is provided with a limiting mechanism (6), the position of each adjusting assembly (43) is limited through the limiting mechanism (6), and then the state of the electric brush assembly (3) is limited.
8. A brush gear for a small-sized motor according to claim 7, wherein: the limiting mechanism (6) comprises a limiting groove (61) formed in the outer surface of the rear end cover (2), a first protrusion (62) and a second protrusion (63) which are made of rubber materials are symmetrically distributed in the limiting groove (61), the first protrusion (62) and the second protrusion (63) are identical in structural shape and are in one-to-one correspondence, and the first protrusion (62) and the second protrusion (63) are adjacent to each other, are designed in an annular shape and are in arc-shaped fit with the outer surface of the adjusting column (431).
9. A brush gear for a small motor according to claim 2, wherein: the electric connection piece 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 in a U-shaped structural design, corresponds to the position of the driving ring (41) and is not in contact with the driving ring, the pins (311) on the two sides of the first electric brush arm (31) are provided with a first U-shaped electrode plate (71) and a second U-shaped electrode plate (72) which are skimming the first electric brush arm, the first U-shaped electrode plate (71) and the second U-shaped electrode plate (72) are fixed with the rear end cover (2), and the pins (311) are clamped and fixed in the first U-shaped electrode plate (71) and the second U-shaped electrode plate (72).
10. A brush gear for a small-sized motor according to claim 1, wherein: the rear end face of the rear end cover (2) is annularly and equidistantly provided with the heat dissipation holes (21), the rear end face of the rear end cover (2) is fixedly provided with the wiring terminal, and the electrode plate I (71), the electrode plate II (72) and the wiring terminal fixed on the rear end face of the rear end cover (2) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210194349.8A CN114614315A (en) | 2022-03-01 | 2022-03-01 | Electric brush device of small motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210194349.8A CN114614315A (en) | 2022-03-01 | 2022-03-01 | Electric brush device of small motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114614315A true CN114614315A (en) | 2022-06-10 |
Family
ID=81860717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210194349.8A Pending CN114614315A (en) | 2022-03-01 | 2022-03-01 | Electric brush device of small motor |
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| Country | Link |
|---|---|
| CN (1) | CN114614315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477869A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
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