Protective structure for carbon brush holder of automobile generator

Abstract

The utility model relates to the technical field of generator carbon brush holders, in particular to an automobile generator carbon brush holder protection structure, which comprises a brush holder disc, four groups of protection mechanisms arranged on the brush holder disc, two groups of copper ring cleaning mechanisms arranged in the protection mechanisms and carbon brushes arranged in the protection mechanisms. The protection mechanism comprises a brush holder protection cover arranged at the top of the brush holder disc and a pressure-bearing baffle arranged at the outer end of the brush holder protection cover. The copper ring cleaning mechanism comprises two sliding covers arranged on the inner wall of the brush carrier protecting cover. The protection mechanisms are uniformly distributed in the carbon brush holder of the existing automobile generator, and the symmetrical copper ring cleaning mechanisms can be arranged in the protection mechanisms for protecting the carbon brush according to the assembly requirement of the carbon brush, so that after the copper ring rotates at a high speed, the brush sheets which are pressurized and pushed inwards can effectively scrape dirt on the surface of the copper ring; and the cleaned copper ring can be in lossless contact with the inner end of the carbon brush, so that the conductive efficiency of the fixed body and the rotating body is improved.

Description

Technical Field

[0001] This utility model relates to the field of generator carbon brush holder technology, specifically a protective structure for an automotive generator carbon brush holder. Background Technology

[0002] The carbon brush holder is an important component of an electric motor. Its function is to apply pressure to the carbon brushes, which slide in contact with the surface of the commutator or slip ring, through springs, so that the current can be stably conducted between the stationary and rotating parts. For electric motors, both the brush holder and the carbon brushes are very important components.

[0003] The carbon brushes inside an automotive alternator have a simple structure. Although they only serve as carriers of current, some contaminants can enter the machine body due to external factors and eventually adhere to the surface of the copper ring during the rotation of the copper ring. The contaminated copper ring can easily cause wear on the inner end of the carbon brush at high speeds. Once the carbon brush wear becomes more severe, the conductivity between the stationary and rotating parts will decrease, seriously affecting the service life of the alternator.

[0004] In view of this, a protective structure for the carbon brush holder of an automotive generator was designed to solve the above problems. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is as follows:

[0007] A protective structure for a carbon brush holder in an automotive generator includes a brush holder disc, four sets of protective mechanisms mounted on the brush holder disc, two sets of copper ring cleaning mechanisms within the protective mechanisms, and carbon brushes mounted within the protective mechanisms. The protective mechanisms include a brush holder cover mounted on the top of the brush holder disc and a pressure-bearing baffle mounted on the outer end of the brush holder cover. The copper ring cleaning mechanisms include two sliding covers mounted on the inner wall of the brush holder cover, pads mounted on the outer ends of the sliding covers, a second telescopic rod mounted inside the pads, a telescopic rod pad mounted on the second telescopic rod, and a brush blade located on the outer end of the telescopic rod pad. The brush blade is located on the outer side of the inner end of the carbon brush.

[0008] In a preferred embodiment, the present invention can be further configured such that the copper ring cleaning mechanism also includes two fixing pins;

[0009] The brush blade has an overall T-shaped structure, and the top and bottom of the telescopic rod pad on the inner side of the brush blade are provided with grooves that are adapted to be snapped into the two fixing pins.

[0010] The fixing pin extends through the outside of the brush plate and is adapted to extend through the inside of the telescopic rod pad.

[0011] In a preferred embodiment, the present invention can be further configured such that a second spring is provided on the outside of the second telescopic rod;

[0012] One end of the second spring is adapted to bear pressure on the inner end of the pad, and the other end of the second spring is adapted to bear pressure on the telescopic rod pad.

[0013] In a preferred embodiment, the present invention may be further configured such that the protective mechanism also includes an anti-detachment disc installed inside the pressure-bearing baffle, a first telescopic rod disposed within the anti-detachment disc, and a heightening disc disposed at the outer end of the inner sub-rod of the first telescopic rod.

[0014] In a preferred embodiment, the present invention can be further configured such that a first spring is provided on the outside of the first telescopic rod;

[0015] One end of the first spring is pressed against the anti-detachment disc, and the other end of the first spring is pressed against the raising disc.

[0016] In a preferred embodiment, the present invention may be further configured such that the sliding cover is made of stainless steel and the surface of the sliding cover is coated with an insulating varnish layer.

[0017] In a preferred embodiment, the present invention can be further configured such that: the height-increasing disc is made of thickened anti-slip rubber material, and the end face of the height-increasing disc that fits against the carbon brush is provided with rough protrusions.

[0018] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0019] 1. This utility model provides a uniformly distributed protective mechanism within the carbon brush holder of an existing automotive generator. Based on the requirements of carbon brush assembly, a symmetrical copper ring cleaning mechanism can be installed within the protective mechanism to protect the carbon brush. When the copper ring rotates at high speed, the pressurized and inwardly pushed brush blades can effectively scrape away dirt from the surface of the copper ring. The cleaned copper ring can then make non-destructive contact with the inner end of the carbon brush, thereby improving the conductivity of the fixed and rotating bodies. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the use of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 3 This is an explosion diagram of the protective mechanism and copper ring cleaning mechanism of this utility model;

[0023] Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0024] Figure label:

[0025] 100. Brush holder;

[0026] 200. Protective mechanism; 210. Brush holder cover; 220. Pressure baffle; 230. Anti-detachment disc; 240. First telescopic rod; 250. Heightening disc; 260. First spring;

[0027] 300. Copper ring cleaning mechanism; 310. Sliding cover; 320. Pad; 330. Second telescopic rod; 340. Telescopic rod pad; 350. Second spring; 360. Fixing pin; 370. Brush blade;

[0028] 400, carbon brush. Detailed Implementation

[0029] 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 specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0030] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0031] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a protective structure for a carbon brush holder of an automotive generator. Example 1

[0032] Combination Figures 1-4 As shown, the present invention provides a protective structure for a carbon brush holder of an automotive generator, including a brush holder disk 100, four sets of protective mechanisms 200 disposed on the brush holder disk 100, two sets of copper ring cleaning mechanisms 300 disposed within the protective mechanisms 200, and carbon brushes 400 disposed within the protective mechanisms 200. The four sets of protective mechanisms 200 are used for pre-rotation protection when the fixed body and the rotating body are selected for energization. The copper ring cleaning mechanisms 300 are optionally installed within the selected protective mechanisms 200 and are used to clean dirt from the surface of the copper rings.

[0033] The protective mechanism 200 includes a brush holder cover 210 disposed on the top of the brush holder plate 100 and a pressure-bearing baffle 220 disposed on the outer end of the brush holder cover 210.

[0034] The copper ring cleaning mechanism 300 includes two fixing pins 360, two sliding covers 310 disposed on the inner wall of the brush holder cover 210, a pad 320 disposed on the outer end of the sliding cover 310, a second telescopic rod 330 disposed inside the pad 320, a telescopic rod pad 340 disposed on the second telescopic rod 330, and a brush 370 disposed on the outer end of the telescopic rod pad 340.

[0035] Brush 370 is located on the outer side of the inner end of carbon brush 400;

[0036] The brush blade 370 has a T-shaped structure, and the top and bottom of the telescopic rod pad 340 inside the brush blade 370 are provided with grooves that are adapted to be snapped into the two fixing pins 360.

[0037] The fixing pin 360 extends through the outside of the brush plate 370 and the rod body adapter extends through the inside of the telescopic rod pad 340.

[0038] When the copper ring rotates at high speed, the two brush blades 370 pushed outward by the two second telescopic rods 330 and the two second springs 350 will adapt and fit against the surface of the copper ring. When there is dirt on the surface of the copper ring, the multiple brush blades 370 that first fit against the surface of the copper ring can perform a wide-area cleaning operation on the dirt. At this time, the surface of the copper ring can be cleaned before it comes into contact with the inner end of the carbon brush 400, thereby avoiding the dirt from causing wear to the inner end of the carbon brush 400. Example 2

[0039] Combination Figure 1 and Figure 3 As shown, based on Embodiment 1, the protective mechanism 200 further includes an anti-detachment disc 230 installed inside the pressure-bearing baffle 220, a first telescopic rod 240 disposed inside the anti-detachment disc 230, and a heightening disc 250 disposed at the outer end of the sub-rod inside the first telescopic rod 240.

[0040] Preferably, the anti-detachment disc 230 is fixedly installed inside the pressure baffle 220, and the inner tube of the first telescopic rod 240 is fixed inside the anti-detachment disc 230 by welding. When the carbon brush 400 is movably installed in the gap formed by the brush holder cover 210 and the brush holder disc 100, the raising disc 250, which is in an elastic pressure state, can provide an effective stabilizing force for the carbon brush 400 to the copper ring.

[0041] A first spring 260 is provided on the outside of the first telescopic rod 240;

[0042] One end of the first spring 260 is pressed against the anti-detachment disc 230, and the other end of the first spring 260 is pressed against the raising disc 250;

[0043] The height increase plate 250 is made of thickened anti-slip rubber material, and the end face of the height increase plate 250 that fits against the carbon brush 400 has rough protrusions.

[0044] The carbon brush 400 extends through the brush holder cover 210. After being pressed by the rough raised end face of the heightening disc 250, it can provide effective stabilization and protection for its lateral movement. Example 3

[0045] Combination Figure 3 and Figure 4 As shown, in the above embodiment, a second spring 350 is provided on the outside of the second telescopic rod 330;

[0046] One end of the second spring 350 is adapted to bear pressure on the inner end of the pad 320, and the other end of the second spring 350 is adapted to bear pressure on the telescopic rod pad 340.

[0047] The slider 310 is made of stainless steel and its surface is coated with an insulating varnish layer.

[0048] Preferably, the pad 320 is fixed to one end of the sliding cover 310 by welding, and the sliding cover 310 is welded to the inner wall of the brush holder cover 210. At this time, the inner tube of the second telescopic rod 330 is fixed inside the pad 320, and the freely telescopic second telescopic rod 330 can provide effective support for the pressure on the brush 370.

[0049] The working principle and usage process of this utility model: When the outer ends of the two carbon brushes 400 are squeezed by the first spring 260 and the heightening plate 250, the inner ends of the two carbon brushes 400 will adapt and fit against the surface of the copper ring.

[0050] As the copper ring rotates at high speed, the two adjacent carbon brushes 400 are compressed and can fit and adhere to the copper ring to provide an effective path for current.

[0051] The two second springs 350 located inside the two sliding covers 310, together with the two second telescopic rods 330, can press the two brush blades 370, which are assembled and adapted to the inner end of the carbon brush 400, against the surface of the copper ring.

[0052] As the copper ring rotates, the outer ends of the two brush blades 370 continuously clean the surface of the copper ring. At this time, dirt that has accumulated on the copper ring due to accidents can be scraped off before contacting the inner end of the carbon brush 400, so as to ensure that the dirt on the surface of the copper ring will not cause wear to the inner end of the carbon brush 400.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A protective structure for a carbon brush holder in an automotive alternator, comprising a brush holder disc (100), characterized in that, It also includes four sets of protective mechanisms (200) set on the brush holder plate (100), two sets of copper ring cleaning mechanisms (300) set inside the protective mechanisms (200), and carbon brushes (400) set inside the protective mechanisms (200). The protective mechanism (200) includes a brush holder cover (210) disposed on the top of the brush holder plate (100) and a pressure-bearing baffle (220) disposed on the outer end of the brush holder cover (210). The copper ring cleaning mechanism (300) includes two sliding covers (310) disposed on the inner wall of the brush holder cover (210), a pad (320) installed on the outer end of the sliding cover (310), a second telescopic rod (330) installed inside the pad (320), a telescopic rod pad (340) installed on the second telescopic rod (330), and a brush (370) disposed on the outer end of the telescopic rod pad (340). The brush blade (370) is located on the outer side of the inner end of the carbon brush (400).

2. The protective structure for a carbon brush holder of an automotive generator according to claim 1, characterized in that, The copper ring cleaning mechanism (300) also includes two retaining pins (360); The brush (370) has a T-shaped structure, and the top and bottom of the telescopic rod pad on the inner side of the brush (370) are provided with grooves that are adapted to be snapped into the two fixing pins (360). The fixing pin (360) extends through the outside of the brush (370) and the rod body adapts to extend through the inside of the telescopic rod pad (340).

3. The protective structure for a carbon brush holder of an automotive generator according to claim 1, characterized in that, A second spring (350) is provided on the outside of the second telescopic rod (330); One end of the second spring (350) is adapted to bear pressure on the inner end of the pad (320), and the other end of the second spring (350) is adapted to bear pressure on the telescopic rod pad (340).

4. The protective structure for a carbon brush holder of an automotive generator according to claim 1, characterized in that, The protective mechanism (200) also includes an anti-detachment disc (230) installed inside the pressure baffle (220), a first telescopic rod (240) set inside the anti-detachment disc (230), and a heightening disc (250) set at the outer end of the sub-rod inside the first telescopic rod (240).

5. The protective structure for a carbon brush holder of an automotive generator according to claim 4, characterized in that, A first spring (260) is provided on the outside of the first telescopic rod (240); One end of the first spring (260) is pressed against the anti-detachment disc (230), and the other end of the first spring (260) is pressed against the heightening disc (250).

6. The protective structure for a carbon brush holder of an automotive generator according to claim 1, characterized in that, The sliding cover (310) is made of stainless steel and the surface of the sliding cover (310) is coated with an insulating varnish layer.

7. The protective structure for a carbon brush holder of an automotive generator according to claim 5, characterized in that, The height-increasing disc (250) is made of thickened anti-slip rubber material, and the end face of the height-increasing disc (250) that is attached to the carbon brush (400) is provided with rough protrusions.

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