Current connecting carbon brush structure

Abstract

The utility model relates to a carbon brush technical field especially relates to a current connection carbon brush structure. The current connection carbon brush structure includes the inner sleeve, is equipped with the rotary disc of rotary connection on the inner sleeve, and the arc eccentric chamber is opened in the rotary disc, and the arc eccentric chamber all installs the carbon grip in, and the carbon brush column is installed in the carbon grip, and the arc eccentric chamber still installs the arc tension spring. The current connection carbon brush structure provided by the utility model passes through setting up the arc eccentric chamber of annular distribution on the rotary disc, and the carbon grip and carbon brush column are built -in in each chamber, and the multiple carbon brush parallel flow guide is formed, and the stability is improved obviously, and the arc tension spring drives the carbon grip to slide along the eccentric chamber wall, realizes the automatic pressure compensation of carbon brush column to the rotating shaft, and under the elastic force action of arc tension spring, when the motor rotating shaft occurs the elastic jump vibration, the carbon grip can slide along the arc eccentric chamber and make carbon brush column still closely adhere on the rotating shaft, and keep the stable current flow guide.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush technology, and in particular to a current-connected carbon brush structure. Background Technology

[0002] In some electric locomotives or new energy vehicles, shaft current exists when the motor rotates, which can cause electro-corrosion damage to the motor shaft, the transmission shaft connected to the motor shaft, and the bearings supporting both. Therefore, it is necessary to use a grounding device to guide the current out through the current-connected carbon brush.

[0003] In existing technologies, the carbon brushes used for connecting the motor shaft current mostly employ a single brush holder to slide and connect the carbon brush, using a spring to fix the carbon brush to the motor shaft. These types of carbon brushes generally suffer from unstable current conduction, especially when the motor shaft bounces or vibrates, resulting in disconnection. Furthermore, the existing carbon brushes are easily deformed by sintering due to being encased in the brush holder, leading to a short lifespan.

[0004] Therefore, it is necessary to provide a new current-connected carbon brush structure to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a current-connected carbon brush structure.

[0006] The current-connected carbon brush structure provided by this utility model includes an inner sleeve, on which a rotating disk is rotatably connected, and a plurality of annularly distributed arc-shaped eccentric cavities are opened in the rotating disk. Each arc-shaped eccentric cavity is equipped with a slidably connected carbon holder, and a carbon brush post is installed in the carbon holder.

[0007] The distance between the inner top wall of the arc-shaped eccentric cavity and the axis of the rotating disk decreases in a clockwise direction, and an arc-shaped tension spring is also installed inside the arc-shaped eccentric cavity.

[0008] Preferably, one end of the arc-shaped tension spring is fixedly connected to the inner wall of the small cavity end of the arc-shaped eccentric cavity, and the other end of the arc-shaped tension spring is fixedly connected to the plate wall corresponding to the carbon gripper.

[0009] Preferably, a T-shaped slider is fixedly installed on one side wall of the carbon holder, and the T-shaped slider passes through the arc-shaped eccentric groove opened on the rotating disk and is slidably connected to the arc-shaped eccentric groove. The T-shaped slider has a threaded through hole communicating with the inner cavity of the carbon holder, and a fastening screw for fastening the carbon brush post is inserted into the threaded through hole.

[0010] Preferably, the top of the carbon gripper is provided with an arc-shaped portion, and the arc-shaped portion is slidably connected to the inner top wall of the arc-shaped eccentric cavity.

[0011] Preferably, the arc-shaped eccentric groove and the arc-shaped eccentric cavity are coaxially arranged.

[0012] Preferably, the inner sleeve has an annular groove, and the annular groove has multiple arc-shaped cavities distributed in annularly and communicating with the inner cavity of the inner sleeve.

[0013] Preferably, the rotating disk is fitted into an annular groove on the inner sleeve, and the carbon brush column passes through the corresponding arc-shaped cavity and extends into the inner cavity of the inner sleeve.

[0014] Preferably, a fixing bracket is fixedly installed on the inner sleeve.

[0015] Compared with related technologies, the current-connected carbon brush structure provided by this utility model has the following beneficial effects:

[0016] This invention features annularly distributed arc-shaped eccentric cavities on a rotating disk, each housing a carbon holder and a carbon brush post, forming a multi-carbon brush parallel current conduction system that significantly improves stability. An arc-shaped tension spring drives the carbon holder to slide along the eccentric cavity wall, achieving automatic pressure compensation of the carbon brush post on the rotating shaft. Furthermore, when the motor shaft vibrates due to the elastic force of the arc-shaped tension spring, the carbon holder can slide along the arc-shaped eccentric cavity, ensuring the carbon brush post remains tightly attached to the shaft, maintaining stable current conduction. The carbon brush post is exposed to the inner cavity of the inner sleeve through the arc-shaped cavity, and this open heat dissipation channel prevents heat accumulation. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the current-connected carbon brush structure provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the exploded structure.

[0019] Figure 3 for Figure 2 The diagram shows the structure of the inner sleeve.

[0020] Figure 4 for Figure 2 The diagram shows the structure of the rotating disk.

[0021] Figure 5 for Figure 4 A cross-sectional view of the rotating disk shown.

[0022] Figure 6 for Figure 5 A schematic diagram of the carbon brush column installation structure when the rotating disk is viewed in section.

[0023] Figure 7 for Figure 2 The diagram shows the connection structure between the carbon gripper and the arc-shaped tension spring.

[0024] Figure 8A schematic diagram of the current-connected carbon brush structure provided by this utility model installed on a motor.

[0025] The following are the labels in the diagram: 1. Inner sleeve; 1a. Annular groove; 1b. Arc-shaped cavity; 11. Fixing frame; 2. Rotating disk; 2a. Arc-shaped eccentric cavity; 2b. Arc-shaped eccentric slide groove; 3. Carbon brush post; 4. Carbon holder; 41. Arc-shaped part; 42. T-shaped slider; 43. Fastening screw; 5. Arc-shaped tension spring; 6. Motor; 7. Rotating shaft. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] Please see Figures 1 to 7 The present invention provides a current-connected carbon brush structure, which includes an inner sleeve 1, a rotating disk 2, a carbon brush post 3, a carbon gripper 4, and an arc-shaped tension spring 5.

[0029] In the embodiments of this utility model, please refer to Figure 1 and Figure 4 The inner sleeve 1 is fitted with a rotating disk 2 that is rotatably connected. Specifically, the inner sleeve 1 has an annular groove 1a, and the annular groove 1a has multiple arc-shaped cavities 1b that are distributed in annularly and communicate with the inner cavity of the inner sleeve 1. The rotating disk 2 is fitted in the annular groove 1a on the inner sleeve 1, and the rotating disk 2 has multiple arc-shaped eccentric cavities 2a that are distributed in annularly. Each arc-shaped eccentric cavity 2a is fitted with a carbon holder 4 that is slidably connected, and a carbon brush post 3 is fitted in the carbon holder 4. The carbon brush post 3 passes through the corresponding arc-shaped cavity 1b and extends into the inner cavity of the inner sleeve 1. The distance between the inner top cavity wall of the arc-shaped eccentric cavity 2a and the axis of the rotating disk 2 decreases in a clockwise direction. An arc-shaped tension spring 5 is also fitted in the arc-shaped eccentric cavity 2a. One end of the arc-shaped tension spring 5 is fixedly connected to the inner wall of the small cavity end of the arc-shaped eccentric cavity 2a, and the other end of the arc-shaped tension spring 5 is fixedly connected to the plate wall corresponding to the carbon holder 4.

[0030] A T-shaped slider 42 is fixedly installed on one side wall of the carbon holder 4. The T-shaped slider 42 passes through the arc-shaped eccentric groove 2b opened in the rotating disk 2 and is slidably connected to the arc-shaped eccentric groove 2b. The arc-shaped eccentric groove 2b is coaxially arranged with the arc-shaped eccentric cavity 2a. A threaded through hole communicating with the inner cavity of the carbon holder 4 is opened on the T-shaped slider 42, and a fastening screw 43 for fastening the carbon brush post 3 is inserted into the threaded through hole.

[0031] In this application, a fixing bracket 11 is fixedly installed on the inner sleeve 1. The fixing bracket 11 is fixedly installed on the motor 6 using screws, so that the rotating shaft 7 of the motor 6 passes through the inner cavity of the inner sleeve 1 and is coaxially arranged with the inner sleeve 1 (as shown in the attached figure). Figure 8 (As shown).

[0032] It should be noted that when installing the carbon brush post 3 inside the carbon holder 4, the carbon brush post 3 is inserted into the carbon holder 4 from the bottom. Then, the fastening screw 43 is tightened to drive the fastening screw 43 to fix the carbon brush post 3 inside the carbon holder 4. Before installing the inner sleeve 1 on the motor 6, the inner sleeve 1 is fixed and the T-shaped slider 42 on the rotating disk 2 is rotated counterclockwise along the arc-shaped eccentric groove 2b. Since the distance from the inner top cavity wall of the arc-shaped eccentric cavity 2a to the axis of the rotating disk 2 decreases in the clockwise direction, the carbon brush post 3 slides into the arc-shaped eccentric cavity 2a while the arc-shaped tension spring 5 is stretched. At this time, after the inner sleeve 1 is put on the rotating shaft 7, the T-shaped slider 42 is released. Therefore, under the elastic force of the arc-shaped tension spring 5, the carbon holder 4 is driven to slide clockwise along the arc-shaped eccentric cavity 2a until the carbon brush post 3 abuts against the rotating shaft 7. Then, the fixing bracket 11 is fixedly installed on the motor 6 with screws and set coaxially with the rotating shaft.

[0033] When the carbon brush post 3 wears down, the carbon gripper 4 is driven to slide further clockwise along the arc-shaped eccentric cavity 2a by the elastic force of the arc-shaped tension spring 5, so that the carbon brush post 3 fits tightly against the rotating shaft 7.

[0034] This application sets up annularly distributed arc-shaped eccentric cavities 2a on the rotating disk 2, with each cavity containing a carbon holder 4 and a carbon brush post 3, forming a multi-carbon brush parallel current conduction, which significantly improves stability. The arc-shaped tension spring 5 drives the carbon holder 4 to slide along the wall of the eccentric cavity, realizing automatic pressure compensation of the carbon brush post 3 on the rotating shaft 7. When the motor shaft bounces and vibrates under the elastic force of the arc-shaped tension spring 5, the carbon holder 4 can slide along the arc-shaped eccentric cavity 2a to keep the carbon brush post 3 tightly attached to the rotating shaft 7, maintaining stable current conduction. The carbon brush post 3 is exposed to the inner cavity of the inner sleeve 1 through the arc-shaped cavity 1b, and the open heat dissipation channel avoids heat accumulation.

[0035] Furthermore, the top of the carbon holder 4 is provided with an arc-shaped part 41, and the arc-shaped part 41 is slidably connected to the inner top cavity wall of the arc-shaped eccentric cavity 2a. The arc-shaped part 41 provided on the top of the carbon holder 4 improves the stability of the carbon holder 4 when sliding along the arc-shaped eccentric cavity 2a.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A current-connected carbon brush structure, characterized in that, Includes an inner sleeve (1), on which a rotating disk (2) is rotatably connected, and the rotating disk (2) has multiple annularly distributed arc-shaped eccentric cavities (2a), each of which is fitted with a slidingly connected carbon holder (4), and a carbon brush column (3) is installed in the carbon holder (4). The distance between the inner top cavity wall of the arc-shaped eccentric cavity (2a) and the axis of the rotating disk (2) decreases in a clockwise direction, and an arc-shaped tension spring (5) is also installed in the arc-shaped eccentric cavity (2a).

2. The current-connected carbon brush structure according to claim 1, characterized in that, One end of the arc-shaped tension spring (5) is fixedly connected to the inner wall of the small cavity end of the arc-shaped eccentric cavity (2a), and the other end of the arc-shaped tension spring (5) is fixedly connected to the plate wall corresponding to the carbon gripper (4).

3. The current-connected carbon brush structure according to claim 2, characterized in that, A T-shaped slider (42) is fixedly installed on one side wall of the carbon holder (4), and the T-shaped slider (42) passes through the arc-shaped eccentric groove (2b) opened on the rotating disk (2) and is slidably connected with the arc-shaped eccentric groove (2b). A threaded through hole communicating with the inner cavity of the carbon holder (4) is opened on the T-shaped slider (42), and a fastening screw (43) for fastening the carbon brush post (3) is inserted into the threaded through hole.

4. The current-connected carbon brush structure according to claim 3, characterized in that, The top of the carbon gripper (4) is provided with an arc-shaped part (41), and the arc-shaped part (41) is slidably connected to the inner top wall of the arc-shaped eccentric cavity (2a).

5. The current-connected carbon brush structure according to claim 3, characterized in that, The arc-shaped eccentric groove (2b) is coaxially arranged with the arc-shaped eccentric cavity (2a).

6. The current-connected carbon brush structure according to claim 1, characterized in that, The inner sleeve (1) is provided with an annular groove (1a), and the annular groove (1a) is provided with a plurality of arc-shaped cavities (1b) that are distributed in annularly and communicate with the inner cavity of the inner sleeve (1).

7. The current-connected carbon brush structure according to claim 6, characterized in that, The rotating disk (2) is fitted into the annular groove (1a) opened on the inner sleeve (1), and the carbon brush column (3) passes through the corresponding arc-shaped cavity (1b) and extends into the inner cavity of the inner sleeve (1).

8. The current-connected carbon brush structure according to claim 1, characterized in that, A fixing bracket (11) is fixedly installed on the inner sleeve (1).

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