Carbon brush fixing device

Abstract

The utility model relates to the technical field of motor shaft voltage, and provides a carbon brush fixing device. One part of the movable part protrudes out of the shell, the other part of the movable part is located in the shell, the movable part can axially move relative to the shell, the protruding end of the movable part is provided with an extrusion part, and the protruding end of the movable part is used for fixing a carbon brush; the flexible part is connected with the extrusion part and located between the extrusion part and the shell; wherein the movable part drives the extrusion part to move towards the direction of the shell so as to extrude the flexible part, and the flexible part is extruded to deform and is filled into the voltage test hole of the motor. According to the technical scheme of the utility model, the teflon tape for fixing the carbon brush can be saved, and the operation process can be reduced at the same time.

Description

Technical Field

[0001] This application relates to the technical field of motor shaft voltage, and more particularly, to a carbon brush fixing device. Background Art

[0002] With the rapid development of new energy electric drives, related electric drive tests are also carried out in multiple extreme directions. Among them, the motor shaft voltage test is one of them. One of the existing motor shaft voltage test methods requires drilling holes in the outer shell near the motor shaft, winding raw tape around the carbon brush and inserting it into the holes to relatively fix the carbon brush to the outer shell of the motor. Then, after the bristles of the carbon brush contact the motor shaft, the voltage signal is collected. This method wastes some raw tape. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a carbon brush fixing device that can save the raw tape for fixing the carbon brush and also reduce the operation process.

[0004] To solve the above technical problem, this application adopts the following technical solutions:

[0005] This application provides a carbon brush fixing device, including: a housing; a movable member, a part of which protrudes from the housing and another part is located inside the housing. The movable member can axially move relative to the housing. An extrusion member is provided at the protruding end of the movable member, and the protruding end of the movable member is used to fix the carbon brush; a flexible member, connected to the extrusion member and located between the extrusion member and the housing; wherein, the movable member drives the extrusion member to move towards the housing direction to extrude the flexible member, and the flexible member is extruded and deformed to fill into the voltage test hole of the motor.

[0006] As an implementation manner, the movable member is integrally formed with the extrusion member or fixedly connected to the extrusion member.

[0007] As an implementation manner, a fixing member is fixed on one side of the housing facing the extrusion member. The area of the fixing member is the same as the area of the extrusion member, and the area of the flexible member does not exceed the area of the extrusion member.

[0008] As an implementation manner, a plugging hole for inserting the carbon brush is provided at one end of the movable member, and the movable member is further provided with a channel for the wire of the carbon brush to pass through, and the channel is communicated with the plugging hole.

[0009] As an implementation manner, the movable member includes a first section and a second section. The radial dimension of the first section is smaller than that of the second section, and the first section protrudes from the housing; the carbon brush fixing device further includes an elastic member, and both ends of the elastic member respectively abut against the housing and the second section.

[0010] As an implementation manner, the carbon brush fixing device further includes a toggling member, the toggling member abuts against one end of the movable member, the toggling member is rotatable relative to the housing, and the movable member moves towards the toggling member through the elastic member.

[0011] As an implementation manner, the carbon brush fixing device further includes a plug pin, and the plug pin passes through the housing and the toggling member.

[0012] As an implementation manner, the toggling member is provided with a through hole for the plug pin to pass through, and the distance from the through hole to the end face of the nearest end of the toggling member is greater than the diameter of the toggling member.

[0013] As an implementation manner, one side of the housing is provided with a first opening, the toggling member can rotate towards the first opening, and the movable member moves towards the toggling member through the elastic force of the elastic member.

[0014] As an implementation manner, the second section is provided with an outlet of the channel, and the housing is further provided with a second opening, and the height of the second opening is lower than the outlet of the channel.

[0015] The technical solution of the present application has the following beneficial effects:

[0016] A movable member that axially moves relative to the housing is provided inside the housing. One end of the movable member protrudes from the housing, and a pressing member is provided at the protruding end of the movable member. The protruding end of the movable member is also used to fix the carbon brush. A flexible member is provided between the pressing member and the housing. When it is necessary to fix the carbon brush, the carbon brush is passed through the voltage test hole on the outer shell of the motor, so that the flexible member is in the voltage test hole, and then the movable member is moved to drive the pressing member to press the flexible member. The flexible member deforms and fills into the voltage test hole of the motor, thereby playing a role in fixing the carbon brush and reducing the winding of the raw material tape;

[0017] In addition, in the prior art, when the number of windings of the raw material tape is small, the carbon brush may not be firmly fixed and needs to be rewound. However, in the carbon brush fixing device of the present application, the flexible member deforms and fills into the voltage test hole, and the carbon brush can be directly fixed to the voltage test hole at one time, which can reduce the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1A schematic structural diagram of a carbon brush fixing device provided in an embodiment of the present application;

[0020] Figure 2 Schematic diagram of the structure of the carbon brush fixing device provided in different embodiments of the present application;

[0021] Figure 3 A schematic diagram of the exploded structure of the carbon brush fixing device provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of the carbon brush fixing device and the carbon brush provided in an embodiment of the present application;

[0023] Figure 5 A schematic cross-sectional view of a carbon brush fixing device according to an embodiment of the present application;

[0024] Figure 6 Schematic diagram of the exploded structure from different perspectives of the carbon brush fixing device provided in an embodiment of the present application.

[0025] Icon: 1-shell; 11-first opening; 12-second opening; 2-movable part; 21-first section; 22-second section; 23-connecting hole; 24-channel; 3-extrusion part; 4-flexible part; 5-fixing part; 6-elastic part; 7-toggle part; 71-through hole; 8-pin; 9-body; 10-wire. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0028] like Figure 1 、 2As shown in FIGS. 5, an embodiment of the present application provides a carbon brush fixing device, which includes a housing 1 and a movable member 2 disposed inside the housing 1. A part of the movable member 2 protrudes from the housing 1, and the other part is inside the housing 1. The movable member 2 can move along the axial direction of the housing 1; an extrusion member 3 is fixed to one end of the movable member 2, and a flexible member 4 is provided between the extrusion member 3 and the housing 1. The end of the movable member 2 with the extrusion member 3 fixed thereto is used to fix the carbon brush. When the carbon brush needs to be fixed to the motor housing, first pass the carbon brush fixing device with the carbon brush through the voltage test hole, so that the bristles of the carbon brush contact the motor shaft, and then place the flexible member 4 in the voltage test hole. The movable member 2 drives the extrusion member 3 to move towards the housing 1, and the extrusion force between the extrusion member 3 and the housing 1 causes the flexible member 4 to deform and fill the voltage test hole, realizing the fixation between the carbon brush and the voltage test hole, without the need to use raw tape to fix the carbon brush, reducing the waste of raw tape;

[0029] In addition, during the process of using raw tape, if the number of windings is small, during the rotation of the motor shaft, the carbon brush will be driven and loosened, and it needs to be wound again, resulting in an extended test process; if too many windings are made, it will be difficult to insert into the voltage test hole. Therefore, the carbon brush fixing device of the embodiment of the present application can reduce the operation process; at the same time, the situation of difficult insertion will not occur.

[0030] Optionally, the voltage test hole is a through hole-shaped structure.

[0031] Optionally, the flexible member 4 can be rubber or the like.

[0032] Optionally, the carbon brush includes a body 9 and bristles (not shown in the figure). The bristles are fixed on the body 9, and the body 9 is inserted into the insertion hole 23 at one end of the movable member 2 by interference fit. Among them, the carbon brush is a standard part.

[0033] Optionally, the extrusion member 3 and the fixing member 5 can be metal parts.

[0034] As an implementation manner, the movable member 2 and the extrusion member 3 are integrally formed or fixedly connected to the extrusion member 3, thereby improving the stability between the movable member 2 and the extrusion member 3.

[0035] Optionally, the fixing manner of the extrusion member 3 and the movable member 2 can be a detachable connection. For example, a screw passes through the extrusion member 3 and the movable member 2 from one side, or it can be glued or the like.

[0036] Such as Figure 2 and 3As shown, as an implementation manner, a fixing member 5 is fixed on one side of the housing 1 facing the extrusion member 3. The area of the fixing member 5 is the same as that of the extrusion member 3, and the area of the flexible member 4 does not exceed that of the extrusion member 3, so that the force-bearing areas of the extrusion member 3 and the fixing member 5 can be all concentrated on both sides of the flexible member 4, which can increase the radially protruding area of the flexible member 4, that is, make the filled area in the voltage test hole larger, so as to improve the stability between the carbon brush and the voltage test hole.

[0037] Optionally, the fixing member 5 can be fixed to one end of the housing 1 by gluing, or can be integrally formed with the housing 1.

[0038] Optionally, both the fixing member 5 and the flexible member 4 are annular structures, so that the first section 21 can pass through the fixing member 5 and the flexible member 4.

[0039] As Figure 4 and 5 shown, as an implementation manner, one end of the movable member 2 is provided with a plugging hole 23 for inserting the carbon brush. The movable member 2 is also provided with a channel 24 for the wire 10 of the carbon brush to pass through. The channel 24 is communicated with the plugging hole 23, so as to facilitate the carbon brush to collect voltage signals, and the voltage signals are transmitted to the oscilloscope through the wire 10; in addition, arranging the channel 24 in the movable member 2 can play a role in protecting the wire 10 and also reduce the interference of the wire 10 on the carbon brush fixing device.

[0040] Optionally, the axis of the plugging hole 23 is coaxial with the movable member 2, and the channel 24 is also coaxial with the movable member 2, so that the carbon brush is coaxial with the movable member 2, which is convenient for passing through the voltage test hole.

[0041] As Figure 3 and 5 shown, as an implementation manner, the movable member 2 includes a first section 21 and a second section 22. The radial dimension of the first section 21 is smaller than that of the second section 22, so that a stepped shape is formed between the first section 21 and the second section 22, which is convenient for the elastic member 6 to abut against the second section 22, and a part of the first section 21 protrudes from the housing 1; the carbon brush fixing device further includes an elastic member 6. The elastic member 6 is sleeved on the outer periphery of the first section 21, and both ends of the elastic member 6 respectively abut between the housing 1 and the second section 22, so that the movable member 2 can move the movable member 2 through the elastic force of the elastic member 6, and the movable member 2 moves to squeeze the flexible member 4.

[0042] Optionally, in the initial state, the elastic member 6 is in a compressed state; when it needs to be fixed in the voltage test hole, the elastic member 6 recovers its elastic force and pushes the movable member 2 to squeeze the flexible member 4.

[0043] Optionally, the elastic member 6 can be a spring. At the same time, in order to improve the stability, a spring with a larger elastic force can be selected.

[0044] Optionally, one end of the housing 1 is provided with a hole adapted to the diameter of the first section 21 for the first section 21 to pass through.

[0045] As Figures 1 to 3 shown, as an implementation manner, the carbon brush fixing device further includes a toggling member 7. The toggling member 7 abuts against one end of the movable member 2. The abutting force of the toggling member 7 on the movable member 2 can compress the elastic member 6, so that the elastic member 6 is always in a compressed state in the initial state, restricting the deformation of the elastic member 6 and preventing it from generating displacement. When the toggling member 7 rotates relative to the housing 1, the abutting force of one end of the movable member 2 on the elastic member 6 is reduced, enabling the elastic member 6 to recover its elastic deformation, and the movable member 2 can move towards the toggling member 7 through the elastic member 6, thereby realizing the extrusion of the flexible member 4.

[0046] Optionally, the end of the toggling member 7 that abuts against the movable member 2 has a rounded corner to facilitate the rotation of the toggling member 7. At the same time, the movable member 2 can also be provided with an arc-shaped groove to facilitate the rotation of the toggling member 7 and reduce the friction between the two. Additionally, in the initial state, the toggling member 7 and the movable member 2 are coaxial, and the toggling member 7 is inserted into the arc-shaped groove. The peripheral wall of the arc-shaped groove can play a role in limiting the position to prevent the toggling member 7 from shaking.

[0047] As Figures 1 to 3 shown, as an implementation manner, the carbon brush fixing device further includes a pin 8. The pin 8 passes through the housing 1 and the toggling member 7, enabling the toggling member 7 to rotate relative to the housing 1 with the pin 8 as the axis.

[0048] As Figure 5 and 6 shown, as an implementation manner, the toggling member 7 is provided with a through hole 71 for the pin 8 to pass through. The distance from the through hole 71 to the end face of the nearest end of the toggling member 7 is greater than the diameter of the toggling member 7. When the toggling member 7 rotates, that is, when the toggling member 7 and the movable member 2 are perpendicular to each other, it can create a movement space for the movable member 2, enabling the elastic member 6 to recover its deformation and driving the movable member 2 to extrude the flexible member 4.

[0049] As Figure 3 shown, as an implementation manner, one side of the housing 1 is provided with a first opening 11. The toggling member 7 can rotate towards the direction of the first opening 11, thereby providing space for the rotation of the toggling member 7. After the toggling member 7 rotates, the elastic member 6 loses part of the extrusion force and needs to recover its elastic deformation. The movable member 2 moves towards the toggling member 7 through the elastic force of the elastic member 6 to realize the extrusion of the flexible member 4.

[0050] As Figure 2As shown, as an implementation manner, the second section 22 is provided with an outlet of the channel 24, and the housing 1 is further provided with a second opening 12. The height of the second opening 12 is lower than the outlet of the channel 24, that is, the distance between the lowest position of the second opening 12 and the bottom of the housing 1 is less than the distance between the opening of the channel 24 and the bottom of the housing 1, so that the outlet of the channel 24 is exposed, and the housing 1 does not block the outlet of the channel 24, facilitating the lead-out of the wire 10.

[0051] Optionally, the outlet of the channel 24 is provided on one side of the second section 22, thus facilitating the lead-out of the wire 10.

[0052] Optionally, the toggling member 7 can also be toggled in the direction of the second opening 12.

[0053] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0054] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0055] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. A carbon brush fixing device, characterized in that, include: case; a movable member, a portion of which protrudes from the housing and the other portion of which is located within the housing, the movable member being movable axially relative to the housing, an extrusion member being provided at one protruding end of the movable member, and the protruding end of the movable member being used to fix a carbon brush; a flexible member connected to the extrusion member and located between the extrusion member and the shell; The movable member drives the extruding member to move toward the housing to extrude the flexible member, and the flexible member is deformed by the extrusion and filled into the voltage test hole of the motor.

2. The carbon brush fixing device according to claim 1, characterized in that, The movable part is integrally formed with the extrusion part or fixedly connected to the extrusion part.

3. The carbon brush fixing device according to claim 1 or 2, characterized in that, A fixing piece is fixed on a side of the shell facing the extrusion piece. The area of the fixing piece is the same as that of the extrusion piece. The area of the flexible piece does not exceed that of the extrusion piece.

4. The carbon brush fixing device according to claim 1 or 2, characterized in that, One end of the movable part is provided with a plug hole for inserting the carbon brush, and the movable part is also provided with a channel for the electric wire of the carbon brush to pass through, and the channel is connected with the plug hole.

5. The carbon brush fixing device according to claim 4, characterized in that The movable member includes a first section and a second section, the radial dimension of the first section is smaller than the radial dimension of the second section, and the first section protrudes from the housing; The carbon brush fixing device further includes an elastic member, and two ends of the elastic member are respectively in contact with the housing and the second section.

6. The carbon brush fixing device according to claim 5, characterized in that, The carbon brush fixing device further includes a toggle member, which abuts against one end of the movable member. The toggle member is rotatable relative to the housing, and the movable member moves toward the toggle member through the elastic member.

7. The carbon brush fixing device according to claim 6, wherein, The carbon brush fixing device further includes a latch which passes through the housing and the toggle member.

8. The carbon brush fixing device according to claim 7, characterized in that, The toggle member is provided with a through hole for the latch to pass through, and the distance from the through hole to the end surface of the nearest end of the toggle member is greater than the diameter of the toggle member.

9. The carbon brush fixing device according to claim 6, characterized in that, A first opening is provided on one side of the housing. The toggle member can rotate toward the first opening, and the movable member moves toward the toggle member due to the elastic force of the elastic member.

10. The carbon brush fixing device according to claim 5, characterized in that, The second section is provided with an outlet of the channel, and the shell is further provided with a second opening, the height of the second opening being lower than the outlet of the channel.

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