CN107276263B - Motor pivot anti-play mounting structure and windscreen wiper motor - Google Patents
Motor pivot anti-play mounting structure and windscreen wiper motor Download PDFInfo
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- CN107276263B CN107276263B CN201710575461.5A CN201710575461A CN107276263B CN 107276263 B CN107276263 B CN 107276263B CN 201710575461 A CN201710575461 A CN 201710575461A CN 107276263 B CN107276263 B CN 107276263B
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- brush
- electric brush
- armature shaft
- socket
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
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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
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
- H02K5/145—Fixedly supported brushes or brush holders, e.g. leaf or leaf-mounted brushes
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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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
Abstract
The invention belongs to the field of motor equipment, and particularly discloses a motor pivot anti-movement mounting structure and a wiper motor, which are beneficial to reducing the energy consumption in a motor and can enable the motor performance to be more reliable. The motor pivot anti-play mounting structure comprises an armature shaft and a motor end cover, wherein the armature shaft is provided with a connecting assembly, and the armature shaft is rotatably arranged on the motor end cover through the connecting assembly; the connection assembly comprises a first ring buckle, a rolling bearing, an elastic element, a sleeve and a second ring buckle which are sequentially arranged on the armature shaft, wherein the elastic element is in a compressed state and pretensions the rolling bearing in the axial direction of the armature shaft. The rolling bearing is arranged on the armature shaft, and the rolling bearing in a pretensioned state can effectively prevent the armature shaft from moving, so that the reliability of the motor is ensured; moreover, the tension elasticity of the elastic element to the rolling bearing is basically unchanged, and the current in the motor is basically consistent in the use process, so that the reduction of the energy consumption in the motor is facilitated.
Description
Technical Field
The invention belongs to the field of motor equipment, and particularly relates to an anti-movement mounting structure of a motor pivot and a wiper motor.
Background
The existing wiper motor comprises a speed reducer shell, a stator, a rotor, a commutator and a brush box type brush holder; the stator comprises a stator shell and stator inner magnetic steel, and the stator inner magnetic steel is arranged on the inner wall of the stator shell and surrounds a circle; the rotor comprises an armature shaft and a rotor armature, wherein the rotor armature comprises an iron core and an enameled wire wound on the iron core, one end of the armature shaft is assembled with a positioning bearing fixedly arranged at the bottom of a stator shell, the rotor armature is arranged on the armature shaft and positioned in a ring surrounded by magnetic steel in the stator, a speed reducer shell is installed and connected on an end opening of the stator shell, a brush box type brush holder is arranged between the speed reducer shell and the stator shell and is coaxial with the armature shaft, the armature shaft is assembled with a rolling bearing arranged in the speed reducer shell, the other end of the armature shaft penetrates through the speed reducer shell and stretches into a reserved hole in the speed reducer shell, injection molding materials are adopted in the hole, and a spring is arranged between the rotor and the rolling bearing in the speed reducer shell so that the rotor is in a compression state in the whole motor structure.
It has the following drawbacks: firstly, a compression force is provided by a spring in a compression state between a rotor and a rolling bearing in a reducer shell to prevent the rotor from moving, when a motor works normally, the rotor moves towards the direction that the spring acts on the rolling bearing to make the elasticity of the rolling bearing consistent, if the motor reverses, the moving direction of the rotor is opposite to the elasticity direction that the spring acts on the rolling bearing, so that the spring is compressed and deformed, the rotor moves obviously, the motor can work abnormally, and the motor can not reverse; secondly, the armature shaft rotates to wear injection molding materials in a preformed hole on the reducer shell, and the energy consumption of the motor is high; thirdly, with the abrasion of injection molding materials, the compression elasticity of the spring to the rotor is gradually reduced, so that the current difference in the motor is large, the energy consumption in the motor is large, gaps between the rotor and the spring possibly occur, and the performance of the motor is affected.
Disclosure of Invention
The invention aims to provide the motor pivot anti-movement mounting structure which is beneficial to reducing the energy consumption in the motor and can ensure more reliable motor performance.
The technical scheme adopted for solving the technical problems is as follows: the motor pivot anti-play mounting structure comprises an armature shaft and a motor end cover, wherein the armature shaft is provided with a connecting assembly, and the armature shaft is rotatably arranged on the motor end cover through the connecting assembly; the connecting assembly comprises a first ring buckle, a rolling bearing, an elastic element, a sleeve and a second ring buckle which are sequentially arranged on the armature shaft, wherein the elastic element is in a compressed state and pretensions the rolling bearing in the axial direction of the armature shaft; the motor end cover is internally provided with an annular platform, the end face of the rolling bearing corresponding to the elastic element is attached to the annular platform, the motor end cover is also provided with a pressing gasket, and the end face of the rolling bearing corresponding to the first ring buckle is pressed by the pressing gasket.
Further, a gasket slot is formed in the side wall of the motor end cover, and the pressing gasket is inserted into the gasket slot from the direction perpendicular to the axis of the armature shaft.
Further, the elastic element is a belleville spring, a flange is arranged at one end of the sleeve, the sleeve is attached to one end of the belleville spring with larger caliber through the flange, and one end of the belleville spring with smaller caliber is attached to the rolling bearing.
The invention also provides a wiper motor, which comprises a stator shell, a rotor armature, stator inner magnetic steel and any one of the motor pivot anti-play mounting structures, wherein the motor end cover is a reducer shell; the stator inner magnetic steel is arranged on the inner wall of the stator shell and surrounds the stator shell to form a circle, one end of the armature shaft is assembled with a positioning bearing fixedly arranged at the bottom of the stator shell, the rotor armature is arranged on the armature shaft and positioned in the circle surrounded by the stator inner magnetic steel, the reducer shell is installed and connected at the opening of the end part of the stator shell and surrounds a motor inner cavity together with the stator shell, and the connecting component is positioned in the motor inner cavity.
Further, the wiper motor also comprises a commutator and a motor brush frame, wherein the commutator is arranged on the armature shaft and is positioned between the rotor armature and the connecting component; the motor brush frame comprises a brush support frame and a brush assembly, and the brush support frame is arranged between the speed reducer shell and the stator shell; the electric brush assembly comprises an elastic sheet seat, an elastic sheet and an electric brush, wherein the elastic sheet seat is arranged on the electric brush supporting frame; the elastic sheet comprises an elastic sheet main body, wherein the upper end of the elastic sheet main body extends upwards and is bent to form a bending part and an installation connecting part; the electric brush is arranged on the elastic sheet main body, and the brush head end and the installation connecting part of the electric brush are respectively positioned at the front side and the rear side of the elastic sheet main body; the installation connecting part of the elastic sheet is embedded in the elastic sheet seat, and the brush head end of the electric brush faces the center of the electric brush supporting frame and is attached to the commutator.
Further, the left end and the right end of the elastic sheet main body extend outwards and are folded towards the front side of the elastic sheet main body to form a flanging; the electric brush positioning parts protruding towards the center of the electric brush jack are arranged on the left side edge and the right side edge of the electric brush jack; the fixed end of the electric brush is inserted and arranged in the electric brush socket, the left side surface and the right side surface of the electric brush fixed end are respectively matched with the electric brush positioning parts on the left side surface and the right side surface of the electric brush socket, and the upper side surface and the lower side surface of the electric brush fixed end are respectively pressed and stuck by the upper clamp body of the socket and the lower clamp body of the socket.
Further, a spring piece slot is arranged in the spring piece seat, the spring piece slot comprises an upper side inlet groove and a lower side clamping groove with the width larger than that of the upper side inlet groove, the top end of the upper side inlet groove is a top opening positioned on the upper side surface of the spring piece seat, and the inner top surface of the lower side clamping groove is a clamping surface; the contained angle between installation connecting portion and the shell fragment main part is the acute angle, and the installation connecting portion is gone up the slope and is provided with the joint portion that the free end was up, and installation connecting portion inserts in the shell fragment slot from the open-top, the upper end of joint portion supports on the card solid surface.
Further, the elastic sheet seat is also provided with a tool entering groove communicated with the clamping groove at the lower side; the left side or the right side of the elastic piece slot is provided with a side opening, the left side or the right side of the installation connecting part is also provided with an elastic piece horizontal positioning part corresponding to the side opening, the included angle between the elastic piece horizontal positioning part and the installation connecting part is an obtuse angle, and the elastic piece horizontal positioning part extends out from the side opening of the elastic piece slot.
Further, the number of the brush assemblies is three; the center of the electric brush supporting frame is used as a circle center, wherein two groups of electric brush components are respectively arranged at a central angle of 65 degrees and a central angle of 180 degrees with the other group of electric brush components.
Further, the motor brush holder further comprises an inductance coil, a capacitor and a thermal protector, and the electric brush, the inductance coil, the capacitor and the thermal protector are electrically connected in a resistance welding mode.
The beneficial effects of the invention are as follows:
(1) The connecting assembly comprises a first ring buckle, a rolling bearing, an elastic element, a sleeve and a second ring buckle which are sequentially arranged on the armature shaft, and the rolling bearing for rotatably connecting the armature shaft and the motor end cover is arranged on the armature shaft and is pretensioned through the elastic element arranged on the armature shaft, so that after the armature shaft is connected with the motor end cover through the connecting assembly, the armature shaft can be effectively prevented from moving under the supporting action of the annular platform and the compacting action of the compacting gasket, and the use reliability of the motor is ensured; moreover, the tension elasticity of the elastic element to the rolling bearing is basically kept unchanged after the elastic element is used for a longer period, and the current in the motor is basically kept consistent in the use process, so that the energy consumption in the motor is reduced, and the motor performance is more reliable; in addition, the elastic element can rotate along with the armature shaft in the running process of the motor, so that the forward and reverse rotation of the motor can be realized.
(2) The pressing gasket is inserted into a gasket slot arranged on the side wall of the motor end cover from the direction perpendicular to the axis of the armature shaft, so that the armature shaft and the motor end cover are installed together, and the assembly is simple, convenient and stable.
(3) The elastic element adopts the belleville spring, so that reliable pre-tightening elasticity can be provided, a gap caused by manufacturing errors is effectively solved, the armature shaft and the rolling bearing are more reliably fixed, and the effect of preventing the armature shaft from moving is better; in addition, the mounting mode that one end with larger caliber of the belleville spring is attached to the flange on the sleeve member, and the other end with smaller caliber is attached to the rolling bearing can fully exert the elasticity of the belleville spring, and the assembly structure is more reliable.
(4) The motor brush frame adopts a spring sheet type brush component structure to replace the existing brush box type brush component structure, so that the structure is simple and reliable, and the assembly is more convenient; the electric brush is directly arranged on the elastic sheet, the elastic sheet provides reliable elastic force, after being assembled with the commutator, the elastic sheet is in a compressed state, so that the electric brush and the commutator are always kept in contact, the electric brush is directly driven to move in the telescopic process of the elastic sheet, the clamping stagnation phenomenon is avoided, sparks and radiation generated when the electric brush is in contact with the commutator are small, and the motor performance is more reliable.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an anti-play mounting structure for a motor pivot in the present invention;
FIG. 2 is a schematic view of an embodiment of a wiper motor according to the present invention;
FIG. 3 is a schematic view of an isometric structure of a motor brush holder;
FIG. 4 is a schematic top view of a motor brush holder;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a partial enlarged view at B in FIG. 5;
FIG. 7 is a schematic view of an embodiment of a spring with brushes mounted thereon;
marked in the figure as: armature shaft 100, motor end cap 200, annular platform 210, compression washer 220, connection assembly 300, first ring 310, rolling bearing 320, elastic element 330, sleeve 340, second ring 350, stator housing 400, positioning bearing 410, rotor armature 500, stator inner magnet steel 600, commutator 700, motor brush holder 800, brush support 810, brush assembly 820, spring mount 821, spring slot 8211, snap face 8212, tool entry slot 8213, spring 822, spring body 8221, bend 8222, mounting connection 8223, flange 8224, socket upper clip 8225, socket lower clip 8226, brush positioning 8227, snap 8228, spring horizontal positioning 8229, brush 823, inductor 830, capacitor 840, and thermal protector 850.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the motor pivot anti-play mounting structure comprises an armature shaft 100 and a motor end cover 200, wherein a connecting assembly 300 is arranged on the armature shaft 100, and the armature shaft 100 is rotatably arranged on the motor end cover 200 through the connecting assembly 300; the connection assembly 300 includes a first ring 310, a rolling bearing 320, an elastic member 330, a sleeve 340, and a second ring 350 sequentially disposed on the armature shaft 100, the elastic member 330 being in a compressed state and pre-tensioning the rolling bearing 320 in an axial direction of the armature shaft 100; the motor end cover 200 is internally provided with an annular platform 210, the end face of the rolling bearing 320 corresponding to the elastic element 330 is attached to the annular platform 210, the motor end cover 200 is also provided with a compression gasket 220, and the end face of the rolling bearing 320 corresponding to the first ring buckle 310 is pressed by the compression gasket 220.
Wherein the pressing washer 220 is used for pressing and fixing the connection assembly 300 on the annular platform 210, and generally has a sufficiently large contact area with the end surface of the rolling bearing 320; the pressing gasket 220 is generally in a sheet structure, and is provided with a part for connecting with the motor end cover 200, and the pressing gasket 220 is generally in a rectangular sheet, and two sides of the rectangular sheet are used for connecting with the motor end cover 200; the compression pad 220 is also typically provided with a relief structure, preferably a U-shaped relief notch, that avoids interference with the armature shaft 100. Preferably, a gasket slot is formed on a side wall of the motor end cap 200, and the pressing gasket 220 is inserted into the gasket slot from a direction perpendicular to the axis of the armature shaft 100, and the mounting structure makes assembly simpler and more convenient.
The first and second tabs 310 and 350 mainly serve as fixing stoppers to fix the rolling bearing 320 and the elastic member 330 to the armature shaft 100; the first and second links 310 and 350 are typically snap springs provided on the armature shaft 100, and the armature shaft 100 is typically provided with snap spring grooves for mounting the first and second links 310 and 350.
The rolling bearing 320 includes an inner ring, an outer ring, and a plurality of rolling elements disposed between the inner ring and the outer ring, and the inner ring and the outer ring are rotatable relative to each other by rolling action of the rolling elements. Typically, one end of the inner ring of the rolling bearing 320 is attached to the elastic member 330, and the other end of the inner ring is attached to the first ring buckle 310; one end of the outer ring of the rolling bearing 320 is abutted against the annular platform 210, and the other end of the outer ring is abutted against the pressed spacer 220.
The elastic element 330 is a part with elastic action, and is generally sleeved on the armature shaft 100, and keeps a small gap with the armature shaft 100, so that the axial property of the elastic element 330 is ensured, and the elastic element is prevented from bending and deforming towards the radial direction; the elastic element 330 being in a compressed state and pretensioning the rolling bearing 320 in the axial direction of the armature shaft 100 means that: the elastic member 330 provided at the armature shaft 100 is in a compressed state and applies a pressing elastic force in the axial direction of the armature shaft 100 to the rolling bearing 320. The sleeve 340 has a cylindrical structure and is sleeved on the armature shaft 100. The elastic element 330 is preferably a belleville spring, as shown in fig. 1, and a flange is disposed on one end of the sleeve 340, and the sleeve 340 is attached to the larger-caliber end of the belleville spring by the flange, and the smaller-caliber end of the belleville spring is attached to the rolling bearing 320.
As shown in fig. 2, the wiper motor comprises a stator housing 400, a rotor armature 500, a stator inner magnetic steel 600, and any one of the above-mentioned motor pivot anti-play mounting structures, and the motor end cover 200 is a reducer housing; the stator inner magnetic steel 600 is arranged on the inner wall of the stator housing 400 and surrounds a circle, one end of the armature shaft 100 is assembled with the positioning bearing 410 fixedly arranged at the bottom of the stator housing 400, the rotor armature 500 is arranged on the armature shaft 100 and positioned in the circle surrounded by the stator inner magnetic steel 600, the reducer housing is installed and connected at the opening of the end part of the stator housing 400 and surrounds a motor inner cavity together with the stator housing 400, and the connecting assembly 300 is positioned in the motor inner cavity. The stator housing 400 and the stator internal magnetic steel 600 provided on the inner wall of the stator housing 400 constitute a stator of the wiper motor, and the armature shaft 100, the rotor armature 500 provided on the armature shaft 100, and the like constitute a rotor of the wiper motor, and the rotor armature 500 generally includes an iron core and an enamel wire wound around the iron core.
As a preferred embodiment of the present invention, as shown in connection with fig. 2, 3, 4, 5 and 6, the wiper motor further includes a commutator 700 and a motor brush holder 800, the commutator 700 being disposed on the armature shaft 100 between the rotor armature 500 and the connection assembly 300; the motor brush holder 800 includes a brush holder 810 and a brush assembly 820, the brush holder 810 being disposed between the decelerator housing and the stator housing 400; the brush assembly 820 comprises a spring plate base 821, a spring plate 822 and a brush 823, wherein the spring plate base 821 is arranged on the brush support 810; the spring plate 822 comprises a spring plate main body 8221, wherein the upper end of the spring plate main body 8221 extends upwards and is bent to form a bending part 8222 and a mounting connection part 8223; the electric brush 823 is arranged on the elastic sheet main body 8221, and a brush head end and a mounting connection part 8223 of the electric brush 823 are respectively positioned at the front side and the rear side of the elastic sheet main body 8221; the mounting connection portion 8223 of the spring 822 is embedded in the spring seat 821, and the brush head end of the brush 823 faces the center of the brush support 810 and is attached to the commutator 700.
Wherein the brush holder 810 is generally ring-shaped or otherwise shaped with holes therein; the brush-holder 810 is preferably a circular ring-shaped structure, or other shaped structure having a circular hole therein. The spring plate seat 821 is used for installing and fixing the spring plate 822, and may be a part installed and fixed on the brush support 810, or may be a structure integrated with the brush support 810. The elastic sheet 822 is used for providing elastic force for the electric brush 823 so that the electric brush 823 always keeps contact with the commutator after the motor brush holder is assembled with the commutator, and the running reliability of the motor is ensured; the elastic piece main body 8221 is used for connecting and fixing the electric brush 823, and needs enough strength to avoid plastic deformation from affecting the contact between the electric brush 823 and the commutator; a reinforcing structure may be generally disposed on the spring body 8221 to improve the reliability and service life of the spring 822, for example, in fig. 7, the left and right ends of the spring body 8221 extend outwards and are turned towards the front side of the spring body 8221 to form a turned edge 8224; the bending part 8222 has elastic deformation capability, which can ensure that the elastic sheet 822 provides reliable elastic force for the electric brush 823; the mounting connection portion 8223 is used for mounting and fixing the spring 822 and the spring seat 821, and a mounting connection structure is generally provided thereon for positioning and fixing the spring 822.
The front direction of the spring body 8221 refers to the direction of the spring body 8221 toward the center of the brush support 810 after the spring body 8221 is mounted and fixed, and the rear direction, the left direction, the right direction, the upper direction and the lower direction of the spring body 8221 are obvious when the front direction of the spring body 8221 is known.
Preferably, as shown in fig. 7, a brush socket is arranged on the elastic sheet main body 8221, the upper side and the lower side of the brush socket extend towards the center of the brush socket respectively and are folded towards the rear side of the elastic sheet main body 8221 to form a socket upper clamp 8225 and a socket lower clamp 8226, the included angles between the socket upper clamp 8225 and the socket lower clamp 8226 and the rear side of the elastic sheet main body 8221 are obtuse angles respectively, and brush positioning parts 8227 protruding towards the center of the brush socket are arranged on the left side and the right side of the brush socket respectively; the fixed end of the electric brush 823 is inserted and arranged in the electric brush socket, the left side surface and the right side surface of the fixed end of the electric brush 823 are respectively matched with the electric brush positioning parts 8227 on the left side surface and the right side surface of the electric brush socket, and the upper side surface and the lower side surface of the fixed end of the electric brush 823 are respectively pressed and stuck by the socket upper clamp 8225 and the socket lower clamp 8226. The included angles between the socket upper clamp 8225 and the socket lower clamp 8226 and the rear side face of the elastic sheet main body 8221 specifically refer to: an included angle between the socket upper clamp 8225 and the rear side of the spring body 8221, and an included angle between the socket lower clamp 8226 and the rear side of the spring body 8221. The electric brush 823 is positioned by the electric brush inserting opening with the structure through the electric brush positioning part 8227, the electric brush 823 is clamped and fixed through the matching of the upper inserting opening clamp 8225 and the lower inserting opening clamp 8226, the electric brush 823 is provided with a good installation and fixing effect, and the connection reliability of the electric brush 823 and the elastic sheet 822 is ensured. In order to increase the radial adjustment range of the brush 823 to improve the service life thereof, a brush socket is generally provided at the lower end of the elastic body 8221.
Preferably, as shown in fig. 5 and 6, a spring slot 8211 is provided in the spring seat 821, the spring slot 8211 includes an upper side entry slot and a lower side clamping slot with a width larger than that of the upper side entry slot, the top end of the upper side entry slot is a top opening located on the upper side surface of the spring seat 821, and the inner top surface of the lower side clamping slot is a clamping surface 8212; the contained angle between the installation connecting portion 8223 and the shell fragment main body 8221 is the acute angle, and the installation connecting portion 8223 is last to be provided with the joint portion 8228 that the free end upwards in the slope, and installation connecting portion 8223 inserts in the shell fragment slot 8211 from the open-top, and the upper end of joint portion 8228 supports on the card face 8212. In the process of installing the spring plate 822 in the spring plate base 821, the installation connecting portion 8223 is inserted into the spring plate slot 8211 from the top opening, the clamping portion 8228 is contracted when passing through the upper side slot, and when the clamping portion 8228 enters the lower side slot, the upper end of the clamping portion is reset to abut against the clamping surface 8212 to fix the spring plate 822. The elastic sheet 822 is fixed through the cooperation of the clamping part 8228 and the clamping surface 8212 of the lower clamping groove, so that the installation fixing effect of the elastic sheet 822 is improved, and the installation stability of the elastic sheet 822 is ensured.
On the basis of the above, in order to horizontally position the elastic sheet 822, the installation and fixation effect of the elastic sheet 822 is further improved, a side opening is arranged on the left side or the right side of the elastic sheet slot 8211, an elastic sheet horizontal positioning portion 8229 corresponding to the side opening is further arranged on the left side or the right side of the installation connection portion 8223, an included angle between the elastic sheet horizontal positioning portion 8229 and the installation connection portion 8223 is an obtuse angle, and the elastic sheet horizontal positioning portion 8229 extends out from the side opening of the elastic sheet slot 8211.
In order to facilitate the disassembly of the brush assembly 820, as shown in fig. 3 and 6, a tool access slot 8213 is further provided on the spring plate base 821 and is in communication with the lower clamping slot. The tool entering groove 8213 can facilitate the tool entering to press the clamping portion 8228, so that the mounting connection portion 8223 can be taken out from the spring plate slot 8211, and the spring plate 822 is separated from the spring plate seat 821.
Specifically, as further shown in fig. 4, the number of brush assemblies 820 is three; the center of the brush support 810 is used as a center, wherein two groups of brush assemblies 820 are respectively arranged at a central angle of 65 degrees and a central angle of 180 degrees with the other groups of brush assemblies 820. That is, the number of the brush assemblies 820 is three, wherein two groups of brush assemblies 820 are symmetrically arranged on the brush support frame 810, and the other group of brush assemblies 820 are arranged between the two groups of brush assemblies 820 and are arranged at a central angle of 65 degrees with the center of the brush support frame 810 as the center of the circle.
Specifically, as further shown in fig. 3 and 4, the motor brush holder 800 further includes an inductance coil 830, a capacitor 840, and a thermal protector 850, and the brushes 823, the inductance coil 830, the capacitor 840, and the thermal protector 850 are electrically connected by means of resistance welding, respectively. The number of the inductance coil 830, the capacitance 840 and the thermal protector 850, and the electrical connection relationship among the brush 823, the inductance coil 830, the capacitance 840 and the thermal protector 850 are all in the prior art, which is not described in detail. All the electric components are electrically connected in a resistance welding mode, so that automatic welding can be performed, the efficiency is high, the welding is reliable, and the pollution is small.
Claims (8)
1. The motor pivot anti-play mounting structure comprises an armature shaft (100) and a motor end cover (200), wherein a connecting assembly (300) is arranged on the armature shaft (100), and the armature shaft (100) is rotatably arranged on the motor end cover (200) through the connecting assembly (300); the method is characterized in that: the connecting assembly (300) comprises a first ring buckle (310), a rolling bearing (320), an elastic element (330), a sleeve (340) and a second ring buckle (350) which are sequentially arranged on the armature shaft (100), wherein the elastic element (330) is in a compressed state and pretensions the rolling bearing (320) in the axial direction of the armature shaft (100); an annular platform (210) is arranged in the motor end cover (200), the end face, corresponding to the elastic element (330), of the rolling bearing (320) is attached to the annular platform (210), a pressing gasket (220) is further arranged on the motor end cover (200), and the end face, corresponding to the first ring buckle (310), of the rolling bearing (320) is pressed by the pressing gasket (220);
a gasket slot is formed in the side wall of the motor end cover (200), and the compression gasket (220) is inserted into the gasket slot from the direction perpendicular to the axis of the armature shaft (100);
the elastic element (330) is a belleville spring, a flange is arranged at one end of the sleeve (340), the sleeve (340) is attached to one end of the belleville spring with larger caliber through the flange, and one end of the belleville spring with smaller caliber is attached to the rolling bearing (320).
2. The utility model provides a wiper motor, includes stator shell (400), rotor armature (500) and stator internal magnet steel (600), its characterized in that: the motor pivot anti-play mounting structure further comprises a motor pivot anti-play mounting structure according to claim 1, wherein the motor end cover (200) is a reducer shell; the stator inner magnetic steel (600) is arranged on the inner wall of the stator housing (400) and surrounds the stator housing to form a circle, one end of the armature shaft (100) is assembled with the positioning bearing (410) fixedly arranged at the bottom of the stator housing (400), the rotor armature (500) is arranged on the armature shaft (100) and positioned in the circle surrounded by the stator inner magnetic steel (600), the reducer housing is installed and connected at the opening of the end part of the stator housing (400) and surrounds the motor inner cavity together with the stator housing (400), and the connecting assembly (300) is positioned in the motor inner cavity.
3. The wiper motor according to claim 2, wherein: the motor further comprises a commutator (700) and a motor brush frame (800), wherein the commutator (700) is arranged on the armature shaft (100) and is positioned between the rotor armature (500) and the connecting assembly (300); the motor brush holder (800) comprises a brush support frame (810) and a brush assembly (820), wherein the brush support frame (810) is arranged between a speed reducer shell and a stator shell (400); the electric brush assembly (820) comprises an elastic sheet seat (821), an elastic sheet (822) and an electric brush (823), wherein the elastic sheet seat (821) is arranged on the electric brush supporting frame (810); the elastic piece (822) comprises an elastic piece main body (8221), and the upper end of the elastic piece main body (8221) extends upwards and is bent to form a bending part (8222) and an installation connecting part (8223); the electric brush (823) is arranged on the elastic sheet main body (8221), and the brush head end of the electric brush (823) and the mounting connection part (8223) are respectively positioned at the front side and the rear side of the elastic sheet main body (8221); the mounting connection part (8223) of the spring plate (822) is embedded in the spring plate seat (821), and the brush head end of the brush (823) faces the center of the brush support frame (810) and is attached to the commutator (700).
4. A wiper motor as defined in claim 3, wherein: the left end and the right end of the elastic sheet main body (8221) extend outwards and are folded towards the front side of the elastic sheet main body (8221) to form a flanging (8224); the electric brush socket is arranged on the elastic sheet main body (8221), the electric brush socket is arranged at the lower end of the elastic sheet main body (8221), the upper side edge and the lower side edge of the electric brush socket extend towards the center of the electric brush socket respectively and are folded towards the rear side surface of the elastic sheet main body (8221) to form an upper socket clamp body (8225) and a lower socket clamp body (8226), the included angles between the upper socket clamp body (8225) and the lower socket clamp body (8226) and the rear side surface of the elastic sheet main body (8221) are obtuse angles, and the left side edge and the right side edge of the electric brush socket are provided with electric brush positioning parts (8227) protruding towards the center of the electric brush socket respectively; the fixed end of the electric brush (823) is inserted into the electric brush socket, the left side surface and the right side surface of the fixed end of the electric brush (823) are respectively matched with electric brush positioning parts (8227) on the left side surface and the right side surface of the electric brush socket, and the upper side surface and the lower side surface of the fixed end of the electric brush (823) are respectively pressed and stuck by an upper socket clamp (8225) and a lower socket clamp (8226).
5. A wiper motor as defined in claim 3, wherein: the elastic piece seat (821) is internally provided with an elastic piece slot (8211), the elastic piece slot (8211) comprises an upper side inlet groove and a lower side clamping groove with the width larger than that of the upper side inlet groove, the top end of the upper side inlet groove is a top opening positioned on the upper side surface of the elastic piece seat (821), and the inner top surface of the lower side clamping groove is a clamping surface (8212); the contained angle between installation connecting portion (8223) and shell fragment main part (8221) is the acute angle, and the slope is provided with joint portion (8228) that the free end upwards on installation connecting portion (8223), installation connecting portion (8223) insert shell fragment slot (8211) from the open-top, the upper end of joint portion (8228) supports on card solid surface (8212).
6. The wiper motor as set forth in claim 5, wherein: a tool entering groove (8213) communicated with the clamping groove at the lower side is further formed in the elastic piece seat (821); the left side or the right side of the elastic piece slot (8211) is provided with a side opening, the left side or the right side of the installation connecting part (8223) is also provided with an elastic piece horizontal positioning part (8229) corresponding to the side opening, an included angle between the elastic piece horizontal positioning part (8229) and the installation connecting part (8223) is an obtuse angle, and the elastic piece horizontal positioning part (8229) extends out from the side opening of the elastic piece slot (8211).
7. The wiper motor as set forth in claim 3, 4, 5 or 6, wherein: the number of the brush assemblies (820) is three; the center of the electric brush supporting frame (810) is used as the center of a circle, wherein two groups of electric brush components (820) are respectively arranged at a central angle of 65 degrees and a central angle of 180 degrees with the other group of electric brush components (820).
8. The wiper motor as set forth in claim 7, wherein: the motor brush holder (800) further comprises an inductance coil (830), a capacitor (840) and a thermal protector (850), and the electric brush (823), the inductance coil (830), the capacitor (840) and the thermal protector (850) are electrically connected in a resistance welding mode.
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| CN201710575461.5A CN107276263B (en) | 2017-07-14 | 2017-07-14 | Motor pivot anti-play mounting structure and windscreen wiper motor |
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| CN201710575461.5A CN107276263B (en) | 2017-07-14 | 2017-07-14 | Motor pivot anti-play mounting structure and windscreen wiper motor |
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| CN107276263B true CN107276263B (en) | 2023-06-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107994718B (en) * | 2017-12-25 | 2024-01-09 | 贵阳万江航空机电有限公司 | Brush holder ring component structure for rear wiper motor |
| CN110417177A (en) * | 2019-06-26 | 2019-11-05 | 成都华川电装有限责任公司 | Rotor axial direction location structure, rain shaving electrical machine and installation method |
| KR102563341B1 (en) * | 2020-12-30 | 2023-08-07 | 계양전기 주식회사 | Motor Including Tension Member |
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