A fixing structure for fixing a brush arm

Abstract

This application relates to the field of motor disassembly and assembly, and more particularly to a fixing structure for fixing a brush arm. The fixing structure for fixing the brush arm includes a second housing. The center of the second housing has a second insertion hole that penetrates the second housing. The second housing also has an arc-shaped blocking arm located below the second insertion hole; two brush arm assemblies are arranged opposite to each other and are located on both sides of the second insertion hole. One end of each of the two brush arm assemblies penetrates the second housing, and the other end is located between the second insertion hole and the arc-shaped blocking arm assembly; and two fixing structures are arranged opposite to each other and are provided on the second housing and are located between the arc-shaped blocking arm and the two brush arm assemblies. The present invention can achieve the advantages of simple structure, convenient use, and saving of motor maintenance and disassembly procedures by effectively utilizing its own structural configuration.

Description

Technical Field

[0001] This application relates to the field of motor disassembly and assembly, and more particularly to a fixing structure for fixing a brush arm. Background Art

[0002] The brush motor designed by our company before, as Figures 8 to 10 shown, includes a first housing 50. The center of the first housing 50 has a first insertion hole 501, and the first insertion hole 501 penetrates through the first housing 50. On both sides of the first insertion hole 501, there is also a first brush arm 61, and on each of the first brush arms 61, there is a first carbon block 62. In addition, the two first carbon blocks

[0001] are located on the side where the two first brush arms 61 are close to each other, and both are spaced a predetermined distance from the first insertion hole 501. In addition, it should be noted that the first housing 50 also has two oppositely arranged brush slots 502, and the two brush slots 502 penetrate through the first housing 50, and the two first brush arms 61 are located on the side where the two brush slots 502 are close to each other. In addition, as Figures 9 to 10As shown, our company's existing brush-opening tooling 60 has two insertion parts. The two insertion parts respectively pass through the two brush-opening slots 502 and respectively contact the two first brush arms 61. When the brush tooling is manually rotated, the two first brush arms 61 are displaced by the action of the brush-opening tooling 60. At this time, the first brush arms 61 are opened, and then the user can remove or install the armature 200. However, it should be noted that there are certain defects in the above technology. Specifically, first, when inserting the brush-opening tooling 60, if the insertion angle is incorrect, it may cause the insertion part of the brush-opening tooling 60 to contact the first carbon block 62, resulting in damage to the first carbon block 62, and further causing abnormal power supply of the first carbon block 62 and abnormal motor performance. Second, when disassembling and assembling the armature 200, the position of the brush-opening operation needs to be maintained continuously. If the brush-opening tooling 60 is displaced, the two first brush arms 61 in contact with the brush-opening tooling 60 will be displaced synchronously, resulting in an angle that does not meet the requirements for brush opening. If the armature 200 is inserted at this time, the armature 200 may collide with the first brush arms 61, causing the first carbon block 62 to break or the brush arms to deform, and the motor cannot be powered normally. Third, in automatic line assembly, since the brush-opening tooling 60 needs to continuously contact the first brush arms 61, a brush-opening tooling 60 needs to be configured for each first housing 50, resulting in a large waste of assembly resources. Fourth, since the first housing 50 is placed on the brush-opening tooling 60, the assembly sequence is: brush opening (rotate the brush-opening tooling 60 placed in the two brush-opening slots 502), place the armature 200, assemble the stator, and then release the first brush arms 61 (the brush-opening tooling 60 is reset). The first brush arms 61 are in the brush-opening state for a relatively long time during the assembly process, which is likely to cause permanent deformation of the first brush arms 61, resulting in insufficient tension and abnormal motor performance.

[0003] Therefore, there is a need for a fixed structure for the brush arm that is simple in structure, easy to use, and saves the motor repair and disassembly processes. Summary of the Invention

[0004] The main purpose of this application is to provide a fixed structure for the brush arm. Among them, the fixed structure of the brush arm can effectively utilize its own structural configuration to achieve the advantage of saving the motor repair and disassembly processes.

[0005] Another object of the present application is to provide a fixing structure for fixing a brush arm. The fixing structure for fixing the brush arm includes a second housing. The second housing has two fixing structures arranged opposite to each other, and the two fixing structures together form a deer horn shape. Two brush arm assemblies are further provided on the second housing. When the user disassembles or installs the armature, the user can apply a force to the two brush arm assemblies, so that one end of each of the two brush arm assemblies cooperates with the end of each of the two fixing structures, so that the two brush arm assemblies are opened, and then it is convenient for the user to disassemble or install.

[0006] Another object of the present application is to provide a fixing structure for fixing a brush arm. The fixing structure for fixing the brush arm is simple in structure and convenient to operate, does not involve complex manufacturing processes and expensive materials, has high economy, and is easy to promote and use.

[0007] To achieve at least one of the above invention objects, the present application provides a fixing structure for fixing a brush arm, where the fixing structure for fixing the brush arm includes:

[0008] A second housing, the center of the second housing has a second insertion hole, the second insertion hole penetrates through the second housing, and the second housing further has an arc-shaped blocking arm, and the arc-shaped blocking arm is located below the second insertion hole;

[0009] Two brush arm assemblies, the two brush arm assemblies are arranged opposite to each other, and the two brush arm assemblies are located on both sides of the second insertion hole. One end of each of the two brush arm assemblies penetrates through the second housing, and the other end of each of the two brush arm assemblies is located in the second insertion hole and the arc-shaped blocking arm assembly; and

[0010] Two fixing structures, the two fixing structures are arranged opposite to each other, and the two fixing structures are provided on the second housing and are located between the arc-shaped blocking arm and the two brush arm assemblies. The end of the brush arm assembly close to the second insertion hole is arranged to be able to swing a predetermined angle in a direction away from the second insertion hole, and at the same time, the mutually facing ends of the two fixing structures are arranged to be able to limit the ends of the two brush arm assemblies after swinging the predetermined angle.

[0011] In one or more embodiments of the present application, one side of the second shell has two first protrusions arranged opposite to each other, and the two first protrusions are located on both sides of the second insertion hole. It should be noted that the bottom of the first protrusion has a first mounting groove with an opening, and the bottom wall forming the first mounting groove has a second mounting groove, and the second mounting groove passes through the second shell. One side of the second shell has two first protrusions arranged opposite to each other, and the two first protrusions are located on both sides of the second insertion hole. The bottom of the first protrusion has a first mounting groove with an opening, and the bottom wall forming the first mounting groove has a second mounting groove, and the second mounting groove passes through the second shell. Each of the second protrusions has a third mounting groove on the side close to the first mounting groove, and the side of the third mounting groove facing away from the second insertion hole is connected to the outside.

[0012] In one or more embodiments of the present application, the second protrusion has an extension end on the side facing away from the first protrusion, and the extension end is close to the end of the second protrusion away from the second insertion hole. In addition, the extension end is perpendicular to the second protrusion, and the extension end has a limiting surface on the side facing away from the second insertion hole, and the limiting surface is a slope.

[0013] In one or more embodiments of the present application, each of the brush arm assemblies includes a second brush arm terminal and a second brush arm brush sheet, the two second brush arm terminals correspond one-to-one to the two first mounting slots, one end of each second brush arm terminal passes through the corresponding first mounting slot and the second mounting slot in sequence, and is placed on the side of the second shell away from the first protrusion, and the other end of the second brush arm terminal is placed on the side of the first protrusion away from the second shell, and the second brush arm terminal near the wall of the third mounting slot also has two oppositely arranged snap-in protrusions, the two snap-in protrusions are oppositely arranged, and both are placed in the third mounting slot.

[0014] In one or more embodiments of the present application, each of the second brush arm brush plates includes a first connecting portion, a bent portion, a first extension portion and a force-bearing portion, one end of the first connecting portion is connected to the bent portion, an end of the bent portion facing away from the first connecting portion is connected to the first extension portion, an end of the first extension portion facing away from the bent portion is connected to the force-bearing portion, and an angle between the first connecting portion and the first extension portion is between 50 and 60°.

[0015] In one or more embodiments of the present application, the first connecting portion has two oppositely arranged connecting holes, the two connecting holes correspond one-to-one to the two snap-fit protrusions, and the two snap-fit protrusions are fixedly connected to the two connecting holes respectively, the first extension portion contacts the limiting surface and extends in the direction close to the second insertion hole, and the other two force-bearing portions are both close to the bottom of the second insertion hole.

[0016] In one or more embodiments of the present application, the force-bearing part also has a slot, and the slot also has at least two oppositely arranged first limiting parts, one end of each first limiting part is fixedly connected to the bottom wall forming the slot, and the other end extends in the direction away from the second insertion hole, and the minimum spacing between the two first limiting parts is smaller than the size of the slot, and each brush arm assembly also includes a carbon block, the two carbon blocks correspond one-to-one to the two slots, and one end of each carbon block passes through the corresponding slot, and the other end extends a predetermined distance in the direction close to the center of the second insertion hole, and the wall surface of the carbon block placed in the slot is also squeezed by the two first limiting parts, thereby limiting the position of the carbon block, so that the carbon block will not easily escape from the corresponding slot.

[0017] In one or more embodiments of the present application, each of the curved portions has two oppositely arranged protrusions on a side close to the first protrusion, and each of the curved portions has two oppositely arranged notches on a side away from the first protrusion, and the two notches correspond one-to-one to the two protrusions, the notches are V-shaped notches, and the angle of the notches is 93-97°, and the thickness of the protrusions is 1.3-1.7 cm.

[0018] In one or more embodiments of the present application, the second shell further has two oppositely arranged communicating grooves, the two communicating grooves are oppositely arranged and spaced a predetermined distance apart, and both communicating grooves also pass through the second shell, and the second shell is provided with a third protrusion on one side of the first protrusion, the third protrusion is located between the two communicating grooves and close to the arc-shaped blocking arm, and the two fixing structures are provided on the third protrusion.

[0019] In one or more embodiments of the present application, each of the fixed structures includes a second connecting portion, a second extending portion, a second limiting portion, and a toggle portion. One end of the second connecting portion is connected to the third protrusion, and the other end is connected to one end of the second extending portion, and the second extending portion is perpendicular to the second connecting portion. The second extending portion extends a predetermined distance away from the second connecting portion, and the other end of the second extending portion is respectively connected to the second limiting portion and the toggle portion. The second limiting portion extends away from the arc-shaped blocking arm, and the toggle portion extends toward the arc-shaped blocking arm, and the end of the toggle portion away from the second extending portion is spaced a predetermined distance from the arc-shaped blocking arm. The other two fixed structures together form a antler-shaped structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and / or other aspects and advantages of the present application will become more clear and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0021] Figure 1 The figure shows a structural schematic diagram of a fixing structure for fixing the brush arm.

[0022] Figure 2 The figure shows a partial structural schematic diagram of a fixing structure for fixing a brush arm.

[0023] Figure 3 The figure shows a schematic structural diagram of the second shell.

[0024] Figure 4 A partial enlarged view of the second housing is shown.

[0025] Figure 5 The figure shows a schematic structural diagram of the second brush arm assembly.

[0026] Figure 6 The figure shows a partial structural schematic diagram of the second armature arm assembly.

[0027] Figure 7 The figure shows a schematic structural diagram of the brush piece of the second brush arm.

[0028] Figure 8 The figure shows a front schematic diagram of a conventional brushed motor.

[0029] Figure 9 The diagram shows a partial schematic diagram of the brush opening tooling Figure 1 .

[0030] Figure 10 The diagram shows a partial schematic diagram of the brush opening tooling Figure 2 . DETAILED DESCRIPTION

[0031] The terms and words used in the following specification and claims are not limited to their literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of the various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0032] It is understood that the term "a" should be construed as "at least one" or "one or more". That is, in one embodiment, the number of an element may be one, while in other embodiments, the number of the element may be multiple. The term "a" should not be construed as a limitation on the number.

[0033] Although ordinal numbers such as "first", "second", etc. will be used to describe various components, those components are not limited herein. The term is only used to distinguish one component from another. For example, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component, without departing from the teachings of the inventive concept. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0034] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Additionally, it will be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of the stated features, numbers, steps, operations, components, elements, or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0035] Schematic fixing structure of the fixed brush arm

[0036] Reference Figures 1 to 7 , according to the fixing structure of the fixed brush arm of a preferred embodiment of the present invention, it should be noted that the existing brushed motors of our company are as Figures 8 to 10 shown, which includes a first housing 50. The center of the first housing 50 has a first insertion hole 501, and the first insertion hole 501 penetrates through the first housing 50. On both sides of the first insertion hole 501, there is also a first brush arm 61, and on each of the first brush arms 61, there is a first carbon block 62. Additionally, the two first carbon blocks 62 are located on the side where the two first brush arms 61 are close to each other and are both spaced a predetermined distance from the first insertion hole 501. Additionally, it should be noted that the first housing 50 also has two oppositely arranged brush slots 502, and the two brush slots 502 penetrate through the first housing 50, and the two first brush arms 61 are located on the side where the two brush slots 502 are close to each other. Additionally, as Figure 9 and10 As shown, our company's existing brush-opening tooling 60 has two insertion parts. The two insertion parts respectively pass through the two brush-opening slots 502 and respectively contact the two first brush arms 61. When the brush tooling is manually rotated, the two first brush arms 61 are displaced by the force of the brush-opening tooling 60. At this time, the first brush arms 61 are opened, and then the user can take out or install the armature 200. However, it should be noted that there are certain defects in the above technology. Specifically, first, when inserting the brush-opening tooling 60, if the insertion angle is incorrect, it may cause the insertion part of the brush-opening tooling 60 to contact the first carbon block 62, resulting in damage to the first carbon block 62, and further causing abnormal power supply of the first carbon block 62 and abnormal motor performance. Second, when disassembling and assembling the armature 200, the position of the brush-opening operation needs to be maintained continuously. If the brush-opening tooling 60 is displaced, the two first brush arms 61 in contact with the brush-opening tooling 60 will be displaced synchronously, so that the angle required for brush-opening cannot be achieved. If the armature 200 is inserted at this time, the armature 200 may collide with the first brush arm 61, resulting in fragmentation of the first carbon block 62 or deformation of the brush arm, and the motor cannot be powered normally. Third, in the automatic line assembly, since the brush-opening tooling 60 needs to continuously contact the first brush arm 61, a brush-opening tooling 60 needs to be configured for each first housing 50, resulting in a large waste of assembly resources. Fourth, since the first housing 50 is placed on the brush-opening tooling 60, the assembly sequence is: brush-opening (rotate the brush-opening tooling 60 placed in the two brush-opening slots 502), put in the armature 200, assemble the stator, and then release the first brush arm 61 (the brush-opening tooling 60 is reset). The first brush arm 61 has a relatively long brush-opening time during the assembly process, which is likely to cause permanent deformation of the first brush arm 61, resulting in insufficient tension and abnormal motor performance. In response to the above problems, our company has made improvements, and the following will elaborate on the present invention in detail for easy understanding of the present invention.

[0037] Specifically, the fixing structure of the fixed brush arm includes a second housing 10. The center of the second housing 10 has a second insertion hole 101, and the second insertion hole 101 penetrates through the second housing 10.

[0038] Furthermore, one side of the second housing 10 has two oppositely arranged first protrusions 11, and the two first protrusions 11 are located on both sides of the second insertion hole 101. It should be noted that the bottom of the first protrusion 11 has a first installation groove 1101 with an opening, and the bottom wall forming the first installation groove 1101 has a second installation groove 1102. The second installation groove 1102 penetrates through the second housing 10, that is, both ends of the second installation groove 1102 are respectively connected to the outside and the first installation groove 1101.

[0039] Furthermore, the second shell 10 is provided with two oppositely arranged second protrusions 12 on one side of the first protrusion 11, and the two second protrusions 12 are located on both sides of the second insertion hole 101, and the other two second protrusions 12 are respectively located on the lower sides of the two first protrusions 11, that is, the two second protrusions 12 respectively correspond to the two first mounting grooves 1101, and each second protrusion 12 is separated from the corresponding first mounting groove 1101 by a predetermined distance.

[0040] It should be noted that each of the second protrusions 12 has a third mounting groove 1201 on a side close to the first mounting groove 1101 , and a side of the third mounting groove 1201 facing away from the second insertion hole 101 is connected to the outside.

[0041] It is worth mentioning that the second protrusion 12 has an extension end 121 on the side facing away from the first protrusion 11 , and the extension end 121 is close to the end of the second protrusion 12 away from the second insertion hole 101 , and the extension end 121 is perpendicular to the second protrusion 12 .

[0042] Furthermore, the extending end 121 has a limiting surface 1211 on a side facing away from the second insertion hole 101 , and the limiting surface 1211 is an inclined surface.

[0043] It should be noted that the fixed structure for fixing the brush arm also includes two brush arm assemblies 20. Each brush arm assembly 20 includes a second brush arm terminal 21 and a second brush arm brush piece 22. The two second brush arm terminals 21 correspond one-to-one to the two first mounting slots 1101. One end of each second brush arm terminal 21 passes through the corresponding first mounting slot 1101 and second mounting slot 1102 in sequence and is positioned on the side of the second housing 10 facing away from the first protrusion 11. The other end of the second brush arm terminal 21 is positioned on the side of the first protrusion 11 facing away from the second housing 10. It should be noted that the size of the second brush arm terminal 21 passing through the second mounting slot 1102 is smaller than the size of the second brush arm terminal 21 passing through the first mounting slot 1101. In addition, the wall surface of the second brush arm terminal 21 near the third mounting slot 1201 also has two opposing snap-in protrusions 211. The two snap-in protrusions 211 are positioned opposite each other and both are positioned within the third mounting slot 1201. In addition, each of the second brush arm brush pieces 22 includes a first connecting portion 221, a bent portion 222, a first extending portion 223, and a force-bearing portion 224. One end of the first connecting portion 221 is connected to the bent portion 222, the end of the bent portion 222 facing away from the first connecting portion 221 is connected to the first extending portion 223, and the end of the first extending portion 223 facing away from the bent portion 222 is connected to the force-bearing portion 224. It should be noted that the angle between the first connecting portion 221 and the first extending portion 223 is between 50 and 60 degrees, preferably 55 degrees.

[0044] It should also be noted that the first connecting portion 221 has two oppositely arranged connecting holes 22101, and the two connecting holes 22101 correspond one-to-one to the two snap-fitting protrusions 211, and the two snap-fitting protrusions 211 are respectively fixedly connected to the two connecting holes 22101. Specifically, the two snap-fitting protrusions 211 first pass through the two connecting holes 22101 respectively, and then the external extrusion device squeezes the two snap-fitting protrusions 211 respectively, so that the end of the snap-fitting protrusion 211 passing through the connecting hole 22101 is deformed, so that the cross-sectional size of the snap-fitting protrusion 211 after being pressed is larger than the aperture of the connecting hole 22101, thereby limiting the position of the brush piece 22 of the second brush arm. In addition, the first extension portion 223 is in contact with the limiting surface 1211 and extends in the direction close to the second insertion hole 101. The other two force-bearing portions 224 are close to the bottom of the second insertion hole 101, that is, the two force-bearing portions 224 extend in the direction close to each other, and the end of the force-bearing portion 224 away from the first extension portion 223 is close to the bottom of the second insertion hole 101.

[0045] Furthermore, a damping plate 23 is provided on a side of each first extension portion 223 facing away from the second insertion hole 101 .

[0046] Furthermore, the force-bearing portion 224 further comprises a slot 22401, and at least two oppositely disposed first limiting portions 2241 are disposed within the slot 22401. One end of each first limiting portion 2241 is fixedly connected to the bottom wall forming the slot 22401, and the other end extends away from the second insertion hole 101. Furthermore, the minimum distance between the two first limiting portions 2241 is smaller than the size of the slot 22401. It is worth mentioning that the first limiting portions 2241 can be deformed under force, thereby increasing the minimum distance between the two first limiting portions 2241.

[0047] Furthermore, each of the brush arm assemblies 20 also includes a second carbon block 24, and the two second carbon blocks 24 correspond one-to-one to the two slots 22401, and one end of each second carbon block 24 passes through the corresponding slot 22401, and the other end extends a predetermined distance toward the center of the second insertion hole 101, and the wall surface of the second carbon block 24 placed in the slot 22401 is also squeezed by the two first limiting portions 2241, thereby limiting the position of the second carbon block 24, so that the second carbon block 24 will not easily escape from the corresponding slot 22401.

[0048] It should be noted that the force-bearing portion 224 can be subjected to an external force, causing the first extension portion 223 to swing a predetermined distance away from the first protrusion 11, while simultaneously deforming the curved portion 222. It should be understood by those skilled in the art that if the curved portion 222 is deformed for a long time or with a significant force, when the force-bearing portion 224 is no longer subjected to force, the curved portion 222 may be permanently deformed, thereby preventing the first extension portion 223 from contacting the limiting surface 1211, and thus preventing the two second carbon blocks 24 from being at the predetermined distance, which could lead to abnormal motor performance. Therefore, improvements are needed in this area.

[0049] On one side of each of the bending portions 222 close to the first bump 11, there are two oppositely arranged protrusions 2221, and on the side of each of the bending portions 222 facing away from the first bump 11, there are two oppositely arranged notches 22201, and the two notches 22201 and the two protrusions 2221 correspond to each other one by one. It is worth mentioning that the two notches 22201 and the two protrusions 2221 deform synchronously, that is, by stamping the wall surface of the bending portion 222 (before bending) with an external stamping device, the two notches 22201 and the two protrusions 2221 are formed synchronously, so as to strengthen the structural strength at the bending portion 222, so that the bending portion 222 will not easily be permanently deformed and has a strong reset ability.

[0050] Furthermore, the notch 22201 is a V-shaped notch 22201, and the angle of the notch 22201 is 93 - 97°, preferably 96°, and the thickness of the protrusion 2221 is 1.3 - 1.7 cm, preferably 1.5 cm.

[0051] It is worth mentioning that on the side of the second housing 10 provided with the first bump 11, there is an arc-shaped blocking arm 13, and the arc-shaped blocking arm 13 is located below the second insertion hole 101. It should be noted that the arc-shaped blocking arm 13 is arranged to prevent the swinging angle of the first extension portion 223 from being too large, resulting in permanent deformation of the bending portion 222. Specifically, when the force-receiving portion 224 receives an external force, the first extension portion 223 swings a predetermined distance in a direction away from the first bump 11 until the first extension portion 223 contacts the arc-shaped blocking arm 13.

[0052] It should be noted that the second housing 10 also has two oppositely arranged communication grooves 102, the two communication grooves 102 are oppositely arranged and spaced a predetermined distance, and the two communication grooves 102 also penetrate through the second housing 10. It should be noted that the two communication grooves 102 are also both close to the side of the arc-shaped blocking arm 13 close to the second insertion hole 101.

[0053] In addition, on the side of the second housing 10 provided with the first bump 11, there is also a third bump 14, and the third bump 14 is located between the two communication grooves 102 and close to the arc-shaped blocking arm 13.

[0054] It is worth mentioning that on the side of the third bump 14 facing away from the second housing 10, there are two oppositely arranged fixing structures 30, that is, one ends of the two fixing structures 30 are fixedly connected to the third bump 14, and the other ends extend a predetermined distance in opposite directions.

[0055] Furthermore, each of the fixing structures 30 includes a second connecting portion 31, a second extending portion 32, a second limiting portion 33, and a toggle portion 34. One end of the second connecting portion 31 is connected to the third protrusion 14, and the other end is connected to one end of the second extending portion 32. The second extending portion 32 is perpendicular to the second connecting portion 31. The second extending portion 32 extends a predetermined distance in a direction away from the second connecting portion 31. The other end of the second extending portion 32 is respectively connected to the second limiting portion 33 and the toggle portion 34.

[0056] The second limiting portion 33 extends away from the arcuate blocking arm 13, while the toggle portion 34 extends toward the arcuate blocking arm 13. The end of the toggle portion 34 facing away from the second extending portion 32 is spaced a predetermined distance from the arcuate blocking arm 13. It should be noted that the fixing structure 30 is integrally formed; specifically, the second housing 10 is a plastic component. It is worth noting that the two fixing structures 30 together form a deer antler-like structure.

[0057] It should be noted that when the force-bearing part 224 is subjected to external force, the first extension part 223 swings a predetermined distance in the direction away from the first protrusion 11 until the force-bearing part 224 squeezes the second limiting part 33, so that the second extension part 32 swings in the direction close to the arc-shaped blocking arm 13, so that the second limiting part 33 no longer blocks the force-bearing part 224 until the first extension part 223 contacts the arc-shaped blocking arm 13, and the second limiting part 33 is reset. At this time, the force-bearing part 224 is no longer subjected to external force. At this time, the force-bearing part 224 is subjected to the force of the bent part 222 to return to its original position, but because its force is small, the second extension part 32 cannot be deformed upward, so the force-bearing part 224 will be blocked by the second limiting part 33, and the armature 200 can be inserted at this time. The brush arm assembly 20 will not collide with the armature 200, so that the second carbon block 24 will not be damaged due to the collision. In addition, when the installation is completed, the toggle portion 34 is toggled, and the second extension portion 32 is deformed by force and swings downward by a predetermined angle. At this time, the second limiting portion 33 no longer blocks the force-bearing portion 224, thereby restoring the first extension portion 223.

[0058] It should be noted that the advantages of the present invention are: 1. In the subsequent maintenance and disassembly of the motor, the use of tooling can be reduced. It is only necessary to manually move the force-bearing part 224 so that the force-bearing part 224 temporarily rests on the second limit part 33. 2. The force-bearing part 224 is temporarily resting on the second limit part 33, and then the armature 200 is inserted. There will be no collision, which will cause the second carbon block 24 to be damaged and the motor power supply to be abnormal. 3. The process steps are reduced, specifically: the force-bearing part 224 is moved so that it rests on the first limit part 2241 to achieve the purpose of opening the brush, and then the armature 200 is taken out or put in, and finally the moving part 34 is moved to release the force-bearing part 224. Therefore, compared with the existing solution, the brush opening time of the present invention is short, and it is not easy for the brush piece of the second brush arm to form permanent deformation. No additional tooling is required for the brush opening operation, which saves the cost of the brush opening tooling and simplifies the brush opening steps.

[0059] In summary, the fixing structure of the fixed brush arm according to the embodiment of the present application is explained, which provides the fixing structure of the fixed brush arm with advantages such as simple structure, easy use, and saving of motor maintenance and disassembly processes.

[0060] It is worth mentioning that in the embodiments of the present application, the fixing structure of the fixed brush arm is simple in structure, does not involve complex manufacturing processes and expensive materials, and is highly economical. At the same time, for manufacturers, the fixing structure of the fixed brush arm provided in the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further facilitating product promotion and use.

[0061] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from these principles.

Claims

1. A fixing structure for fixing a brush arm, characterized in that: The fixing structure of the fixed brush arm includes: A second shell, the center of the second shell has a second insertion hole, the second insertion hole passes through the second shell, the second shell also has an arc-shaped blocking arm, the arc-shaped blocking arm is located at the lower side of the second insertion hole, one side of the second shell has two oppositely arranged first protrusions, and the two first protrusions are located on both sides of the second insertion hole, the bottom of the first protrusion has a first mounting groove with an opening, and the bottom wall forming the first mounting groove has a second mounting groove, the second mounting groove passes through the second shell, the second shell has two oppositely arranged first protrusions on one side, the two first protrusions are located on both sides of the second insertion hole, the bottom of the first protrusion has a first mounting groove with an opening, and the bottom wall forming the first mounting groove has a second mounting groove, the second mounting groove passes through the second shell, and the second shell is provided with the first protrusion One side of the block also has two second protrusions arranged opposite to each other, and the two second protrusions are located on both sides of the second insertion hole, and each second protrusion has a third mounting groove on a side close to the first mounting groove, and the third mounting groove is connected to the outside on a side away from the second insertion hole, and the second protrusion has an extending end on a side away from the first protrusion, and the extending end is close to an end of the second protrusion away from the second insertion hole, and the extending end is perpendicular to the second protrusion, and a limiting surface is provided on a side of the extending end away from the second insertion hole, and the limiting surface is an inclined surface, and the second protrusion has an extending end on a side away from the first protrusion, and the extending end is close to an end of the second protrusion away from the second insertion hole, and the extending end is perpendicular to the second protrusion, and a limiting surface is provided on a side away from the second insertion hole, and the limiting surface is an inclined surface; Two brush arm assemblies, the two brush arm assemblies are arranged opposite to each other, and the two brush arm assemblies are located on both sides of the second insertion hole, one end of the two brush arm assemblies passes through the second shell, and the other end is located in the second insertion hole and the arc-shaped blocking arm assembly, each of the brush arm assemblies includes a second brush arm terminal and a second brush arm brush sheet, the two second brush arm terminals correspond to the two first mounting grooves one by one, one end of each second brush arm terminal passes through the corresponding first mounting groove and the second mounting groove in sequence, and is placed on the side of the second shell away from the first protrusion, and the other end of the second brush arm terminal is placed in the The first protrusion is away from the side of the second shell, and the wall surface of the second brush arm terminal close to the third mounting groove further has two oppositely arranged clamping protrusions, the two clamping protrusions are oppositely arranged and are both placed in the third mounting groove, each of the second brush arm brush pieces includes a first connecting portion, a bent portion, a first extension portion and a force-bearing portion, one end of the first connecting portion is connected to the bent portion, the end of the bent portion away from the first connecting portion is connected to the first extension, the end of the first extension portion away from the bent portion is connected to the force-bearing portion, and the angle between the first connecting portion and the first extension is between 50 and 60 degrees; and Two fixing structures are arranged opposite to each other, and the two fixing structures are arranged on the second shell and located between the arc-shaped blocking arm and the two brush arm assemblies, wherein the end of the brush arm assembly close to the second insertion hole is arranged to be able to swing away from the second insertion hole by a predetermined angle, and at the same time, the ends of the two fixing structures that are away from each other are arranged to limit or release the ends of the two brush arm assemblies after swinging by a predetermined angle.

2. The fixing structure for fixing the brush arm according to claim 1, wherein the first connecting portion has two oppositely arranged connecting holes, the two connecting holes correspond one-to-one to the two snap-fit protrusions, and the two snap-fit protrusions are fixedly connected to the two connecting holes respectively, the first extension portion contacts the limiting surface and extends in the direction close to the second insertion hole, and the other two force-bearing portions are both close to the bottom of the second insertion hole.

3. The fixing structure for fixing the brush arm according to claim 2, wherein the force-bearing part further has a slot, and the slot further has at least two oppositely arranged first limiting parts, one end of each first limiting part is fixedly connected to the bottom wall forming the slot, and the other end extends in a direction away from the second insertion hole, and the minimum spacing between the two first limiting parts is smaller than the size of the slot, and each of the brush arm assemblies further includes a carbon block, the two carbon blocks correspond one-to-one to the two slots, and one end of each carbon block passes through the corresponding slot, and the other end extends a predetermined distance in a direction close to the center of the second insertion hole, and the wall surface of the carbon block placed in the slot is also squeezed by the two first limiting parts, thereby limiting the position of the carbon block, so that the carbon block will not easily escape from the corresponding slot.

4. The fixing structure for fixing a brush arm according to claim 3, wherein each of the bent portions has two oppositely disposed protrusions on a side close to the first protrusion, and each of the bent portions has two oppositely disposed notches on a side facing away from the first protrusion, and the two notches correspond one-to-one with the two protrusions, the notches are V-shaped, the angle of the notches is 93-97°, and the thickness of the protrusions is 1.3-1.7 cm.

5. The fixing structure for fixing the brush arm according to claim 4, wherein the second shell further has two oppositely arranged communicating grooves, the two communicating grooves are oppositely arranged and spaced a predetermined distance apart, and both communicating grooves also pass through the second shell, and the second shell is provided with a third protrusion on one side of the first protrusion, the third protrusion is located between the two communicating grooves and close to the arc-shaped blocking arm, and the two fixing structures are provided on the third protrusion.

6. The fixing structure for fixing the brush arm according to claim 5, wherein each of the fixing structures includes a second connecting portion, a second extending portion, a second limiting portion, and a toggle portion, one end of the second connecting portion is connected to the third protrusion, and the other end is connected to one end of the second extending portion, and the second extending portion is perpendicular to the second connecting portion, and the second extending portion extends a predetermined distance away from the second connecting portion, and the other end of the second extending portion is respectively connected to the second limiting portion and the toggle portion, the second limiting portion extends in a direction away from the arc-shaped blocking arm, and the toggle portion extends in a direction close to the arc-shaped blocking arm, and the end of the toggle portion away from the second extending portion is spaced a predetermined distance from the arc-shaped blocking arm, and the other two fixing structures together form a antler-shaped structure.

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