CN221081042U - Carbon brush assembly mounting structure and series excited machine - Google Patents

Abstract

The application provides a carbon brush assembly mounting structure and a series excited motor, wherein the carbon brush assembly mounting structure comprises a bracket assembly and a carbon brush assembly; the support assembly is provided with a pin hole group, the pin hole group comprises a pin hole and a pin groove arranged at the pin hole, the carbon brush assembly is provided with riveting pins corresponding to the pin hole group, and the riveting pins penetrate through the pin hole and are fixed to the pin groove. The riveting pin fixing mode is simple in process operation and firm in fixing. The height of the whole machine after the carbon brush assembly is mounted to the bracket assembly can be reduced, the carbon brush assembly is fixed more firmly and stably after the riveting pins are bent, and noise caused by the fact that the carbon brush assembly is mounted inauthentically is avoided. In addition, the mode of bending and fixing the riveting pin replaces the existing carbon brush assembly and the bracket assembly to install insulating paper, so that the manufacturing process can be reduced, and materials can be saved.

Description

Carbon brush assembly mounting structure and series excited machine

Technical Field

The application relates to the technical field of household motors, in particular to a carbon brush assembly mounting structure and a series excited motor.

Background

The wall breaking machine sold in the market at present is high in height, and mainly the motor used is a two-stage motor with carbon brushes, and the whole machine is high due to the fact that the height of the two-stage motor with the carbon brushes is too high.

In order to miniaturize the product, a four-pole series excited motor is also used in the wall breaking machine, but the safety rule requires that the riveting pin of the motor carbon brush box and the lower bracket of the motor are kept at least 3mm apart. In order to reduce the distance space between the riveting pin of the carbon brush box of the motor and the lower bracket of the motor, the prior art is to add an insulating paper between the carbon brush box bracket and the lower bracket of the motor, so that a procedure is added in the assembly process of the motor, thereby causing additional cost increase and also increasing the space for using the motor.

Disclosure of utility model

The embodiment of the application aims to provide a carbon brush assembly mounting structure, and the fixing mode of the riveting pin is simple in process operation and firm in fixing. The height of the whole machine after the carbon brush assembly is mounted to the bracket assembly can be reduced, the carbon brush assembly is fixed more firmly and stably after the riveting pins are bent, and noise caused by the fact that the carbon brush assembly is mounted inauthentically is avoided. In addition, the mode of bending and fixing the riveting pin replaces the existing carbon brush assembly and the bracket assembly to install insulating paper, so that the manufacturing process can be reduced, and materials can be saved.

In a first aspect, the present application provides a carbon brush assembly mounting structure, including a bracket assembly and a carbon brush assembly; the carbon brush comprises a carbon brush component, and is characterized in that a pin hole group is arranged on the support component, the pin hole group comprises a pin hole and a pin groove arranged at the pin hole, a riveting pin is arranged at the position, corresponding to the pin hole group, of the carbon brush component, and penetrates through the pin hole and is fixed to the pin groove.

In an embodiment, the bracket assembly includes a mounting plate, a bracket body and a lower bracket connected to the bracket body, the pin holes are assembled on the mounting plate, and the mounting plate is connected with the bracket body.

In an embodiment, the mounting plate is further provided with a connecting hole, a first mounting hole is formed in a position of the lower bracket corresponding to the connecting hole, a second mounting hole is formed in a position of the bracket body corresponding to the first mounting hole, and the mounting plate is fixedly connected with the lower bracket and the bracket body through the connecting part penetrating through the connecting hole, the first mounting hole and the second mounting hole.

In one embodiment, the rivet pin passes through the pin hole and is fixed to the pin recess, including: the riveting pins penetrate through the mounting plate and are bent and fixed towards the direction where the pin grooves are located.

In an embodiment, the bracket body is uniformly provided with a plurality of waist-shaped holes according to the radial rotation direction, and the setting positions of the waist-shaped holes are aligned with the riveting pins.

In an embodiment, the pin hole groups and/or the connection holes are distributed on the mounting plate in an array along a circumferential direction.

In an embodiment, a portion of the riveting pin, which faces the bracket assembly after being fixed, is a first end face, a portion of the bracket assembly, which faces the first end face, is a second end face, and a linear distance d1 between the first end face and the second end face is greater than or equal to 3mm.

In an embodiment, the number of the carbon brush assemblies is at least four, and the at least four carbon brush assemblies are distributed in a circumferential array relative to the center of the mounting plate.

In an embodiment, a portion of the riveting pin, which faces the bracket assembly after being fixed, is a first end face, a portion of the mounting plate, which faces the first end face, is a third end face, and a linear distance d2 between the first end face and the third end face is greater than or equal to 0.9mm.

In a second aspect, the present application provides a series motor, including a stator, a rotor, and a carbon brush assembly mounting structure according to any one of the embodiments of the first aspect of the present application.

In the scheme of the application, in the carbon brush assembly mounting structure, the support assembly is provided with the pin holes and the pin grooves for assembling the riveting pins of the carbon brush assembly, and the riveting pin fixing mode is simple in process operation and firm in fixing. By adopting the fixing mode, the height of the whole machine of the carbon brush assembly after being mounted to the bracket assembly can be reduced, the carbon brush assembly is more firmly and stably fixed after the riveting pin is bent, and noise generated by the fact that the carbon brush assembly is not firmly mounted is avoided.

Secondly, the mode of bending and fixing the riveting pin replaces the existing carbon brush assembly and the bracket assembly, and insulating paper is arranged between the carbon brush assembly and the bracket assembly, so that the manufacturing process can be reduced, and materials can be saved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below.

Fig. 1 is a schematic view of a carbon brush assembly mounting structure according to a first embodiment of the present application;

fig. 2 is an exploded view of a carbon brush assembly mounting structure according to a first embodiment of the present application;

FIG. 3 is a schematic structural view of a mounting board according to a first embodiment of the present application;

FIG. 4 is a top view of a mounting plate according to a first embodiment of the present application;

Fig. 5 is a schematic connection diagram of a carbon brush assembly and a mounting plate according to a first embodiment of the present application;

fig. 6 is a front view of a carbon brush assembly mounting structure according to a first embodiment of the present application;

FIG. 7 is an enlarged schematic view of FIG. 6 at A;

fig. 8 is a schematic view of a carbon brush assembly mounting structure according to a second embodiment of the present application;

fig. 9 is a schematic diagram ii of a carbon brush assembly mounting structure according to a second embodiment of the present application;

Fig. 10 is an exploded view of a carbon brush assembly mounting structure according to a second embodiment of the present application;

FIG. 11 is a top view of a mounting plate according to a second embodiment of the present application;

Fig. 12 is a schematic connection diagram of a carbon brush assembly and a mounting plate according to a second embodiment of the present application;

Fig. 13 is a schematic view of a carbon brush assembly mounting structure according to a third embodiment of the present application;

fig. 14 is a second schematic view of a carbon brush assembly mounting structure according to the third embodiment of the present application;

Fig. 15 is an exploded view of a carbon brush assembly mounting structure according to a third embodiment of the present application;

FIG. 16 is a top view of a mounting plate provided by a third embodiment of the present application;

fig. 17 is a schematic connection diagram of a carbon brush assembly and a mounting plate according to a third embodiment of the present application.

Reference numerals:

1-a carbon brush assembly mounting structure; 10-a bracket assembly; 101-a second end face; 100-pin hole sets; 110-pin holes; 120-pin grooves; 130-mounting plate; 131-connecting holes; 132-a third end face; 140-a stent body; 141-a second mounting hole; 142-waist-shaped holes; 150-a lower bracket; 151-first mounting holes; 152-limiting steps; 160-connecting parts; 20-carbon brush assembly; 200-riveting pins; 210-a first end face.

Detailed Description

The terms "first," "second," "third," and the like are used merely for distinguishing between descriptions and not for indicating a sequence number, nor are they to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "left", "right", "upper", "lower", etc., are based on directions or positional relationships shown in the drawings, or directions or positional relationships conventionally put in use of the product of the application, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The technical scheme of the application will be described with reference to the accompanying drawings.

Referring to fig. 1, a schematic diagram of a carbon brush assembly mounting structure 1 according to a first embodiment of the application is shown. The carbon brush assembly mounting structure 1 includes: a bracket assembly 10 and a carbon brush assembly 20; referring to fig. 2, a pin hole set 100 is disposed on the bracket assembly 10, the pin hole set 100 includes a pin hole 110 and a pin groove 120 disposed at the pin hole 110, a rivet pin 200 is disposed at a position on the carbon brush assembly 20 corresponding to the pin hole set 100, and the rivet pin 200 passes through the pin hole 110 and is fixed to the pin groove 120.

Further, referring to fig. 2 and 3, the bracket assembly 10 includes a mounting plate 130, a bracket body 140 and a lower bracket 150 connected to the bracket body 140, the pin hole set 100 is disposed on the mounting plate 130, and the mounting plate 130 is connected to the bracket body 140. The mounting plate 130 is made of epoxy plate, and the lower bracket 150 is made of cast aluminum.

The pin recess 120 may be provided on the mounting plate 130 near one end of the pin hole 110. As shown in fig. 3 and 4, the pin hole 110 has a rectangular shape corresponding to the shape of the rivet pin 200. The lead groove 120 is disposed beside the elongated lead hole 110, and the width of the lead groove 120 is consistent with the length of the lead hole 110.

Further, the rivet pin 200 passing through the pin hole 110 and being fixed to the pin recess 120 includes: the rivet pin 200 passes through the pin hole 110 on the mounting plate 130 and is bent and fixed toward the direction in which the pin groove 120 is located.

In this embodiment, the lower end surface of the mounting plate 130 is defined as an end surface of the mounting plate 130 near the carbon brush assembly 20 in fig. 2, the upper end surface of the mounting plate 130 is defined as an end surface of the mounting plate 130 near the bracket assembly 10, and the pin grooves 120 are located on the upper end surface of the mounting plate 130.

Referring to fig. 5, in operation, the riveting pin 200 passes through the lower end surface of the mounting plate 130 to the upper end surface of the mounting plate 130, and the portion of the riveting pin 200 passing through the pin hole 110 can be bent and fixed towards the pin groove 120 (as shown by the arrow direction in fig. 5) by means of a tool such as a pressure clamp, and the bent portion of the riveting pin 200 can hook the pin groove 120 under the restriction of the pin groove 120, so that the riveting pin 200 can be fixed on the mounting plate 130. The fixing mode is simple in process operation and firm in fixing.

The carbon brush assembly 20 is required to be kept at a distance of at least 3mm from the bracket assembly 10 in the installation specification. Referring to fig. 6, a portion of the riveting pin 200 facing the bracket assembly 10 after being fixed is defined as a first end surface 210, a portion of the bracket assembly 10 facing the first end surface 210 is defined as a second end surface 101, and referring to fig. 7, a linear distance d1 between the first end surface 210 and the second end surface 101 is greater than or equal to 3mm.

The riveting pin 200 is bent and fixed to the pin groove 120 to increase the vertical distance between the riveting pin 200 and the lower bracket 150, so as to ensure the distance requirement of the installation standard (i.e. the linear distance d1 between the first end surface 210 and the second end surface 101 is greater than or equal to 3 mm), so as to reduce the overall height of the carbon brush assembly 20 after being installed to the bracket assembly 10, and the manner of bending and fixing the riveting pin 200 replaces the existing installation of insulating paper between the carbon brush assembly 20 and the bracket assembly 10, thereby reducing the manufacturing process and saving materials.

Generally, the thickness of the mounting plate 130 is 1.6-2.0mm, the depth of the pin recess 120 is 0.7-1.1mm, please refer to fig. 6 and 7, which define the portion of the riveted pin 200 facing the bracket assembly 10 as the first end surface 210, and the portion of the mounting plate 130 facing the first end surface 210 as the third end surface 132, so in this embodiment, the linear distance d2 between the first end surface 210 and the third end surface 132 is greater than or equal to 0.9mm, and the overall height of the carbon brush assembly 20 after being mounted to the bracket assembly 10 can be reduced.

Further, referring to fig. 3 and 4, the mounting plate 130 is further provided with a connecting hole 131, a first mounting hole 151 is disposed at a position of the lower bracket 150 corresponding to the connecting hole 131, a second mounting hole 141 is disposed at a position of the bracket body 140 corresponding to the first mounting hole 151, the connecting hole 131, the first mounting hole 151 and the second mounting hole 141 are in one-to-one correspondence, and the mounting plate 130 is fixedly connected to the lower bracket 150 and the bracket body 140 by passing through the connecting hole 131, the first mounting hole 151 and the second mounting hole 141 through the connecting member 160.

Illustratively, the connection hole 131 is a circular rivet hole and the connection member 160 may be a circular rivet post. The round riveting columns penetrate through the connecting holes 131 on the mounting plate 130, the first mounting holes 151 on the lower bracket 150 and the second mounting holes 141 on the bracket body 140, and then are riveted and fixed by means of equipment, so that the mounting plate 130, the lower bracket 150 and the bracket body 140 are fixed.

In the above embodiment, the carbon brush assemblies 20 are made of conductive metal, the number of the carbon brush assemblies 20 is at least four, and the at least four carbon brush assemblies 20 are distributed in a circumferential array with respect to the center of the mounting plate 130.

In the embodiment, taking four carbon brush assemblies 20 as an example, each carbon brush assembly 20 has an inverted U shape, and therefore, four riveting pins 200 are provided on each carbon brush assembly 20. Correspondingly, on the mounting board 130, there are four pin hole sets 100, and the four pin hole sets 100 are distributed in a circumferential array with respect to the center of the mounting board 130. Each pin hole group 100 has four pin holes 110, and each pin hole 110 is provided with one pin groove 120, that is, one pin hole group 100 has four pin holes 110 and four pin grooves 120, and the four pin grooves 120 are centrosymmetric.

The number of the lower brackets 150 is four, and the number of the riveting columns is correspondingly four. Correspondingly, the number of the connecting holes 131 is four, and the connecting holes 131 are in one-to-one correspondence with the riveting columns. The connection holes 131 and/or the pin hole sets 100 are distributed on the mounting board 130 in a circumferential array. Each of the connection holes 131 may be spaced apart from each of the pin hole sets 100.

In the first embodiment of the present application, the bracket assembly 10 is assembled by the mounting plate 130, the bracket body 140, and the lower bracket 150. In assembling the bracket assembly 10, the four carbon brush assemblies 20 are first required to be mounted on the mounting plate 130 one by one, and after the four riveting pins 200 on each carbon brush assembly 20 pass through the corresponding four pin holes 110 on the mounting plate 130, the riveting pins 200 are fixed to the positions of the pin grooves 120 by means of an external device, so as to complete the fixation of the carbon brush assemblies 20 and the mounting plate 130.

The connecting holes 131 on the mounting plate 130 on which the carbon brush assembly 20 is mounted correspondingly pass through the round riveting columns on the lower bracket 150, and then riveting and fixing are carried out by means of equipment, so that the connection between the mounting plate 130 and the bracket body 140 is realized, and finally the assembly of the bracket assembly 10 and the carbon brush assembly 20 is completed.

Fig. 8 and 9 are schematic diagrams of a carbon brush assembly mounting structure 1 according to a second embodiment of the application. As with the structure of the carbon brush assembly mounting structure 1 in the first embodiment, the carbon brush assembly mounting structure 1 includes: the support assembly 10 and the carbon brush assembly 20, the support assembly 10 comprises a mounting plate 130, a support body 140 and a lower support 150 connected to the support body 140, the pin hole group 100 is arranged on the mounting plate 130, and the mounting plate 130 is connected with the support body 140. The mounting plate 130 is made of epoxy plate, and the lower bracket 150 is made of cast aluminum.

Referring to fig. 10 and 11, a pin hole set 100 is provided on the bracket assembly 10, and the pin hole set 100 includes a pin hole 110 and a pin groove 120, which is different from the first embodiment in that the pin hole 110 is formed by combining a triangle and a rectangle, wherein the rectangle pin hole 110 is used for passing through the riveting pin 200, and the shape of the pin hole 110 is consistent with the shape of the riveting pin 200, and is rectangular. The triangular hole portion corresponds to the pin groove 120, and the triangular hole is used for guiding the fixing bending direction of the rivet pin 200. In this embodiment, the triangular holes are used to replace the pin grooves 120 in the first embodiment, and the structure of the pin hole set 100 makes the fixing of the carbon brush assembly 20 more reliable and stable after the riveting pins 200 are bent, so as to avoid noise generated when the carbon brush assembly 20 is not firmly installed.

Further, riveting the pin 200 through the pin hole 110 and fixing to the pin hole 110 includes: the rivet pin 200 passes through the rectangular portion of the pin hole 110 on the mounting plate 130 and is bent and fixed in the direction of the triangular portion of the pin hole 110.

Referring to fig. 10, the lower end surface of the mounting plate 130 is defined as an end surface of the mounting plate 130 near the carbon brush assembly 20 in fig. 10, the upper end surface of the mounting plate 130 is defined as an end surface of the mounting plate 130 near the bracket assembly 10, and the pin grooves 120 are located on the upper end surface of the mounting plate 130.

Referring to fig. 12, in operation, the riveting pin 200 passes through the lower end surface of the mounting plate 130 to the upper end surface of the mounting plate 130, the rectangular portion of the riveting pin 200 passing through the pin hole 110 on the mounting plate 130 can be bent and fixed in the direction of the triangular portion of the pin hole 110 (as shown by the arrow direction in fig. 12) by means of a tool such as a pressure clamp, and the bending portion of the riveting pin 200 can hook the mounting plate 130 under the restriction of the triangular portion of the pin hole 110, so that the riveting pin 200 can be fixed on the mounting plate 130.

Referring to fig. 6 and 7, a portion of the carbon brush assembly 20 facing the bracket assembly 10 after the rivet pin 200 is fixed is defined as a first end surface 210, a portion of the bracket assembly 10 facing the first end surface 210 is defined as a second end surface 101, and a linear distance d1 between the first end surface 210 and the second end surface 101 is equal to or greater than 3mm. The portion of the riveting pin 200 facing the bracket assembly 10 after being fixed is defined as a first end face 210, the portion of the mounting plate 130 facing the first end face 210 is defined as a third end face 132, and the linear distance d2 between the first end face 210 and the third end face 132 is more than or equal to 0.9mm.

Further, referring to fig. 11 and 12, the mounting plate 130 is further provided with a connecting hole 131, a first mounting hole 151 is disposed at a position of the lower bracket 150 corresponding to the connecting hole 131, a second mounting hole 141 is disposed at a position of the bracket body 140 corresponding to the first mounting hole 151, the connecting hole 131, the first mounting hole 151 and the second mounting hole 141 are in one-to-one correspondence, and the mounting plate 130 is fixedly connected to the lower bracket 150 and the bracket body 140 by passing through the connecting hole 131, the first mounting hole 151 and the second mounting hole 141 through the connecting member 160. The structure of the mounting plate 130 in the first embodiment is the same, the connecting hole 131 is a circular rivet hole, the connecting component 160 is a circular rivet column, the circular rivet column passes through the connecting hole 131 on the mounting plate 130, the first mounting hole 151 on the lower bracket 150 and the second mounting hole 141 on the bracket body 140, and then the fixing between the mounting plate 130 and the lower bracket 150 and the bracket body 140 is realized by riveting and fixing by means of equipment.

Referring to fig. 8 and 9, a plurality of waist-shaped holes 142 are uniformly distributed on the bracket body 140 according to the radial rotation direction, and the arrangement positions of the waist-shaped holes 142 are aligned with the riveting pins 200. The arrangement position of the waist-shaped hole 142 is aligned with the riveting pin 200, so that the electric gap between the riveting pin 200 and the lower bracket 150 in the vertical direction can be increased, the distance requirement of the installation standard (namely, the linear distance d1 between the first end face 210 and the second end face 101 is more than or equal to 3 mm) is ensured, and the overall height of the carbon brush assembly 20 after being installed to the bracket assembly 10 is reduced.

In the second embodiment of the present application, the carbon brush assemblies 20 are made of conductive metal, the number of the carbon brush assemblies 20 is at least four, and the at least four carbon brush assemblies 20 are distributed in a circumferential array with respect to the center of the mounting plate 130. Taking four carbon brush assemblies 20 as an example, each carbon brush assembly 20 has a "≡shape, and therefore, four riveting pins 200 are provided on each carbon brush assembly 20. Correspondingly, on the mounting board 130, there are four pin hole sets 100, and the four pin hole sets 100 are distributed in a circumferential array with respect to the center of the mounting board 130. Each pin hole set 100 has four pin holes 110, and the four pin holes 110 are centrally symmetrical.

The number of the lower brackets 150 is four, and the number of the riveting columns is correspondingly four. Correspondingly, the number of the connecting holes 131 is four, and the connecting holes 131 are in one-to-one correspondence with the riveting columns. The connection holes 131 and/or the pin hole sets 100 are distributed on the mounting board 130 in a circumferential array. Each of the connection holes 131 may be spaced apart from each of the pin hole sets 100.

The waist-shaped holes 142 are arranged in four groups, each group of waist-shaped holes 142 is arranged in two, and the four groups of waist-shaped holes 142 are uniformly distributed on the bracket body 140 according to the radial rotation direction.

In the second embodiment of the present application, the bracket assembly 10 is assembled by the mounting plate 130, the bracket body 140, and the lower bracket 150. In assembling the bracket assembly 10, the four carbon brush assemblies 20 are first required to be mounted on the mounting plate 130 one by one, the four riveting pins 200 on each carbon brush assembly 20 penetrate through the rectangular parts of the corresponding four pin holes 110 on the mounting plate 130, and then the riveting pins 200 are bent and fixed towards the direction of the triangular parts of the pin holes 110 by means of external equipment, so as to complete the fixation of the carbon brush assemblies 20 and the mounting plate 130.

The connecting holes 131 on the mounting plate 130 on which the carbon brush assembly 20 is mounted correspondingly pass through the round riveting columns on the lower bracket 150, and then riveting and fixing are carried out by means of equipment, so that the connection between the mounting plate 130 and the bracket body 140 is realized, and finally the assembly of the bracket assembly 10 and the carbon brush assembly 20 is completed.

Fig. 13 and 14 are schematic diagrams of a carbon brush assembly mounting structure 1 according to a third embodiment of the present application. The carbon brush assembly mounting structure 1 is the same as that of the carbon brush assembly mounting structure 1 in the first and second embodiments, and the carbon brush assembly mounting structure 1 includes: the support assembly 10 and the carbon brush assembly 20, the support assembly 10 comprises a mounting plate 130, a support body 140 and a lower support 150 connected to the support body 140, the pin hole group 100 is arranged on the mounting plate 130, and the mounting plate 130 is connected with the support body 140. The mounting plate 130 material is an epoxy plate. Unlike the first embodiment and the second embodiment, in this embodiment, the material of the lower bracket 150 is a plastic piece, and the material adopts pet+30% b glass fiber (Polyethylene terephthalate, polyethylene terephthalate, abbreviated as PET), or pet+30% glass fiber, or BMC (Bulk Molding Compound, bulk molding compound, abbreviated as BMC), or the like.

Referring to fig. 15 and 16, the bracket assembly 10 is provided with a pin hole set 100, and the pin hole set 100 includes a pin hole 110 and a pin groove 120, and the structure of the pin hole set 100 is the same as that of the pin hole set 100 in the second embodiment. The pin hole 110 is formed by combining a triangle structure and a rectangle structure, wherein the rectangle pin hole 110 is used for the riveting pin 200 to pass through, and the shape of the pin hole 110 is consistent with the shape of the riveting pin 200 and is rectangle. The triangular hole portion corresponds to the pin groove 120, and the triangular hole is used for guiding the fixing bending direction of the rivet pin 200.

Further, riveting the pin 200 through the pin hole 110 and fixing to the pin hole 110 includes: the rivet pin 200 passes through the rectangular portion of the pin hole 110 on the mounting plate 130 and is bent and fixed in the direction of the triangular portion of the pin hole 110.

Referring to fig. 15, the lower end surface of the mounting plate 130 is defined as an end surface of the mounting plate 130 near the carbon brush assembly 20 in fig. 10, the upper end surface of the mounting plate 130 is defined as an end surface of the mounting plate 130 near the bracket assembly 10, and the pin grooves 120 are located on the upper end surface of the mounting plate 130.

Referring to fig. 17, in operation, the riveting pin 200 passes through the lower end surface of the mounting plate 130 to the upper end surface of the mounting plate 130, the rectangular portion of the riveting pin 200 passing through the pin hole 110 on the mounting plate 130 can be bent and fixed in the direction of the triangular portion of the pin hole 110 (as shown by the arrow direction in fig. 17) by means of a tool such as a pressure clamp, and the bending portion of the riveting pin 200 can hook the mounting plate 130 under the restriction of the triangular portion of the pin hole 110, so that the riveting pin 200 can be fixed on the mounting plate 130.

Further, referring to fig. 16 and 17, the mounting plate 130 is further provided with a connecting hole 131, a first mounting hole 151 is provided at a position of the lower bracket 150 corresponding to the connecting hole 131, a second mounting hole 141 is provided at a position of the bracket body 140 corresponding to the first mounting hole 151, the connecting hole 131, the first mounting hole 151 and the second mounting hole 141 are in one-to-one correspondence, and the mounting plate 130 is fixedly connected to the lower bracket 150 and the bracket body 140 by passing through the connecting hole 131, the first mounting hole 151 and the second mounting hole 141 through the connecting member 160.

The connection hole 131 is a circular rivet hole, for example. Unlike the first embodiment and the second embodiment, the connecting member 160 may be a screw, referring to fig. 14 and 15, the lower bracket 150 is provided with a limiting step 152, and the limiting step 152 is disposed at the first mounting hole 151. The connecting hole 131 on the mounting plate 130 is aligned with the first mounting hole 151 on the lower bracket 150, and under the limiting action of the limiting step 152, the screw sequentially passes through the connecting hole 131 on the mounting plate 130, the first mounting hole 151 on the lower bracket 150 and the second mounting hole 141 on the bracket body 140, so that the mounting plate 130 is fixed with the lower bracket 150 and the bracket body 140.

In this embodiment, since the lower bracket 150 is made of plastic material, the installation specification requirement that the linear distance d1 between the first end face 210 and the second end face 101 is greater than or equal to 3mm does not need to be satisfied between the lower bracket 150 and the carbon brush assembly 20, and at this time, the distance between the carbon brush assembly 20 and the lower bracket 150 can be set to be very short, so that the overall height of the carbon brush assembly 20 after being installed on the bracket assembly 10 is reduced. The manner of bending and fixing the riveting pin 200 replaces the conventional insulating paper installed between the carbon brush assembly 20 and the bracket assembly 10, so that the manufacturing process can be reduced and the materials can be saved.

In the third embodiment of the present application, the carbon brush assemblies 20 are made of conductive metal, the number of the carbon brush assemblies 20 is at least four, and the at least four carbon brush assemblies 20 are distributed in a circumferential array with respect to the center of the mounting plate 130. Taking four carbon brush assemblies 20 as an example, each carbon brush assembly 20 has a "≡shape, and therefore, four riveting pins 200 are provided on each carbon brush assembly 20. Correspondingly, on the mounting board 130, there are four pin hole sets 100, and the four pin hole sets 100 are distributed in a circumferential array with respect to the center of the mounting board 130. Each pin hole set 100 has four pin holes 110, and the four pin holes 110 are centrally symmetrical.

The number of the lower brackets 150 is four, the number of the limit steps 152 is four, and the number of the connecting parts 160 is four. Correspondingly, the number of the connecting holes 131 is four, and the connecting holes 131 and the limiting steps 152 are in one-to-one correspondence. The connection holes 131 and/or the pin hole sets 100 are distributed on the mounting board 130 in a circumferential array. Each of the connection holes 131 may be spaced apart from each of the pin hole sets 100.

In the third embodiment of the present application, the bracket assembly 10 is assembled by the mounting plate 130, the bracket body 140, and the lower bracket 150. In assembling the bracket assembly 10, the four carbon brush assemblies 20 are first required to be mounted on the mounting plate 130 one by one, the four riveting pins 200 on each carbon brush assembly 20 penetrate through the rectangular parts of the corresponding four pin holes 110 on the mounting plate 130, and then the riveting pins 200 are bent and fixed towards the direction of the triangular parts of the pin holes 110 by means of external equipment, so as to complete the fixation of the carbon brush assemblies 20 and the mounting plate 130.

The connecting hole 131 on the mounting plate 130 on which the carbon brush assembly 20 is mounted is aligned with the first mounting hole 151 on the lower bracket 150, and under the limiting action of the limiting step 152, the screw sequentially passes through the connecting hole 131 on the mounting plate 130, the first mounting hole 151 on the lower bracket 150 and the second mounting hole 141 on the bracket body 140, so that the mounting plate 130 is fixed with the lower bracket 150 and the bracket body 140, and finally the assembly of the bracket assembly 10 and the carbon brush assembly 20 is completed.

The application provides a series excited motor, which comprises a stator, a rotor and a carbon brush assembly mounting structure 1.

In the carbon brush assembly mounting structure 1, the pin holes 110 and the pin grooves 120 for assembling the riveting pins 200 of the carbon brush assembly 20 are arranged on the bracket assembly 10, and the riveting pins 200 are fixed in a simple process operation and firm fixation. By adopting the fixing mode, the overall height of the carbon brush assembly 20 after being mounted to the bracket assembly 10 can be reduced, the carbon brush assembly 20 is more firmly and stably fixed after the riveting pin 200 is bent, and noise generated by the unstable mounting of the carbon brush assembly 20 is avoided. In addition, the manner of bending and fixing the riveting pin 200 replaces the conventional insulating paper installed between the carbon brush assembly 20 and the bracket assembly 10, so that the manufacturing process can be reduced and the materials can be saved.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. A carbon brush assembly mounting structure comprises a bracket assembly and a carbon brush assembly; the carbon brush comprises a carbon brush component and is characterized in that the carbon brush component is provided with a support hole group, the support hole group is provided with a pin hole group, the pin hole group comprises a pin hole and a pin groove arranged at the pin hole, the carbon brush component is provided with a riveting pin corresponding to the pin hole group, and the riveting pin penetrates through the pin hole and is fixed to the pin groove;

The bracket assembly comprises a mounting plate, a bracket body and a lower bracket connected with the bracket body, the pin holes are formed in the mounting plate in a group, and the mounting plate is connected with the bracket body;

The rivet pin passes through the pin hole and is fixed to the pin recess, including:

The riveting pins penetrate through the mounting plate and are bent and fixed towards the direction where the pin grooves are located.

2. The carbon brush assembly mounting structure according to claim 1, wherein the mounting plate is further provided with a connecting hole, a first mounting hole is formed in a position of the lower bracket corresponding to the connecting hole, a second mounting hole is formed in a position of the bracket body corresponding to the first mounting hole, and the mounting plate is fixedly connected with the lower bracket and the bracket body by penetrating through the connecting hole, the first mounting hole and the second mounting hole through a connecting component.

3. The carbon brush assembly mounting structure according to claim 1, wherein the bracket body is provided with a plurality of waist-shaped holes uniformly distributed in a radial rotation direction, and the waist-shaped holes are aligned with the rivet pins.

4. The carbon brush assembly mounting structure according to claim 2, wherein the pin hole group and/or the connection holes are distributed on the mounting plate in a circumferential direction array.

5. The carbon brush assembly mounting structure according to any one of claims 1 to 4, wherein a portion of the rivet pin that faces the bracket assembly after being fixed is a first end face, a portion of the bracket assembly that faces the first end face is a second end face, and a linear distance d1 of the first end face and the second end face is equal to or greater than 3mm.

6. The carbon brush assembly mounting structure according to any one of claims 1 to 4, wherein the number of carbon brush assemblies is at least four, and the at least four carbon brush assemblies are distributed in a circumferential array with respect to the center of the mounting plate.

7. The carbon brush assembly mounting structure according to claim 1, wherein a portion of the rivet pin facing the bracket assembly after being fixed is a first end face, a portion of the mounting plate facing the first end face is a third end face, and a linear distance d2 between the first end face and the third end face is equal to or greater than 0.9mm.

8. A series motor comprising a stator, a rotor, and further comprising the carbon brush assembly mounting structure according to any one of claims 1 to 7.