Wear-resistant motor carbon brush

Abstract

The utility model provides a wear-resistant motor carbon brush, which relates to the technical field of motor carbon brushes and comprises a metal folded plate, one end of the metal folded plate is fixedly connected with a first spring, one end of the first spring is provided with a brush head, and the brush head is composed of a base, a conductive layer, a base layer and a wear-resistant layer. A fixing device is arranged at one end of the first spring and comprises a mounting plate, the mounting plate is detachably connected with the base, a wire is arranged in the first spring, the two ends of the wire are fixedly connected with the metal folded plate and the mounting plate respectively, and the mounting plate is fixedly connected to one end of the first spring. According to the carbon brush, the effect of fixing the brush head is achieved through the fixing device, when the brush head is abraded, a worker only needs to replace the brush head independently, replacement of all parts of the carbon brush is avoided, and therefore waste of resources is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor carbon brush technical field especially relates to a wear -resisting type motor carbon brush. BACKGROUND

[0002] Motor carbon brush is an important component of motor, it plays a vital role in the operation process of motor, motor carbon brush is made of carbon, graphite and other materials, has the characteristics such as good conductivity, wear resistance, high temperature resistance.

[0003] The prior art carbon brush is composed of brush head, spring and metal sheet, and the brush head and spring and metal sheet of the carbon brush are fixed together, when the carbon brush is used, the carbon brush inevitably contacts and rubs with the commutator or the current collector ring closely, thereby causing the carbon brush to wear and need to be replaced, and the overall replacement can easily cause resource waste. UTILITY MODEL CONTENTS

[0004] The utility model discloses a wear -resisting type motor carbon brush to solve the shortcoming in prior art.

[0005] In order to realize the above-mentioned purpose, the utility model discloses the following technical scheme: a wear -resisting type motor carbon brush, including metal folded plate, one end of metal folded plate is fixedly connected with first spring, one end of first spring is provided with brush head, wherein the brush head is combined by base, conducting layer, base layer and wear -resisting layer, one end of first spring is provided with fixing device, the fixing device includes mounting plate, wherein the mounting plate and the base are detachably connected, the inside of first spring is provided with wire, wherein both ends of wire are fixedly connected with metal folded plate and mounting plate.

[0006] The effect reached by the above-mentioned components is that when the carbon brush needs to be used, the staff installs the first spring and wire through the metal folded plate, the external current enters the brush head through the metal folded plate and wire, the brush head drives the motor to rotate, when the brush head wears and cannot be used, the staff dismounts and replaces the brush head through the fixing device.

[0007] Preferably, the mounting plate is fixedly connected at one end of the first spring, recesses are formed on both sides of the mounting plate, the second spring is fixedly connected to the mounting plate by means of the recesses, the plug rod is fixedly connected to one end of the second spring, the mounting groove is formed in the base corresponding to the mounting plate, the size of the mounting groove is matched with the size of the mounting plate, the two symmetrical insertion holes are formed in the base by means of the mounting groove, the size of the plug rod is matched with the size of the insertion hole, and the metal protrusion is fixedly connected to the upper surface of the mounting plate.

[0008] The effects achieved by the above components are that when the brush head needs to be replaced, the worker first moves the new brush head to the installation plate, at this time the worker moves the insertion rod, the insertion rod moves towards the inside of the groove, the second spring is contracted, at this time the worker inserts the installation plate into the installation groove of the brush head base, when the insertion rod moves to the position of the insertion hole, under the action of the reset elastic force of the second spring, the insertion rod is inserted into the insertion hole of the base, the effect of fixing the brush head is achieved, at this time the metal protrusion of the installation plate is in contact with the base, facilitating current transmission, through the fixing device, the effect of fixing the brush head is achieved, when the brush head is worn, the worker can replace the brush head alone, avoiding replacement of all parts of the carbon brush, thereby reducing resource waste.

[0009] Preferably, one end of the insertion rod is fixedly connected with a sharp protrusion, wherein the sharp end of the sharp protrusion is away from the insertion rod.

[0010] The effects achieved by the above components are that the sharp protrusion facilitates the worker to insert the insertion rod into the insertion hole of the base, bringing convenience to the worker.

[0011] Preferably, the arc surface of the insertion rod is fixedly connected with a pull plate, wherein the surface of the pull plate is provided with anti-skid lines.

[0012] The effects achieved by the above components are that the pull plate increases the friction between the worker's hand and the insertion rod, thereby facilitating the worker to move the insertion rod, bringing convenience to the worker.

[0013] Preferably, the arc surface of the insertion rod is fixedly connected with two mutually symmetrical sliding blocks, and the installation plate is provided with a sliding groove corresponding to the sliding blocks, wherein the sliding blocks and the sliding groove are slidingly matched.

[0014] The effects achieved by the above components are that the sliding blocks of the insertion rod move in the sliding groove of the installation plate, achieving the effect of limiting the moving direction of the insertion rod, avoiding shaking of the insertion rod.

[0015] Preferably, the arc surface of the insertion rod is inlaid with a rubber ring, and the base is provided with a limiting groove corresponding to the rubber ring, wherein the size of the limiting groove is matched with the size of the rubber ring.

[0016] The effects achieved by the above components are that when the insertion rod is inserted into the insertion hole of the base, the inner wall of the insertion hole of the base extrudes the rubber ring, the rubber ring deforms, when the rubber ring moves to the position of the limiting groove, under the action of the self-resetting elastic force of the rubber ring, the rubber ring enters the limiting groove, achieving the effect of fixing the insertion rod, avoiding deformation of the second spring when the brush head is working, thereby causing the insertion rod to move out of the insertion hole and the brush head to fall off.

[0017] Preferably, the base layer wraps the conductive layer, wherein the material of the conductive layer is copper, the wear-resistant layer wraps the base layer, wherein the material of the base layer is natural graphite, and the conductive layer and the base layer and the wear-resistant layer are fixedly connected with the base.

[0018] The conductive layer material in the brush head is copper, and copper has high conductivity, thereby improving the conductive effect of the brush head.

[0019] Preferably, the material of the wear-resistant layer is nickel-containing graphite.

[0020] The nickel alloy is coated on the surface of the graphite particles by physical or chemical methods, the brush head is kept lubricating by the nickel alloy, and the friction and wear are reduced.

[0021] In summary, the utility model has the advantages that:

[0022] When the brush head needs to be replaced, the staff first moves the new brush head to the installation plate, moves the insertion rod at this time, the insertion rod moves to the direction of the groove inside, the second spring is contracted, the staff inserts the installation plate into the installation slot of the brush head base at this time, when the insertion rod moves to the position of the insertion hole, the insertion rod is inserted into the insertion hole of the base under the action of the reset force of the second spring, the effect of fixing the brush head is achieved, the metal lugs of the installation plate are in contact with the base at this time, current transmission is facilitated, the effect of fixing the brush head is achieved through the fixing device, the staff can replace the brush head alone when the brush head is worn, all parts of the carbon brush are avoided to be replaced, thereby reducing the waste of resources. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0024] Figure 2 It is a three-dimensional structure schematic view of the utility model Figure 1 ;

[0025] Figure 3 It is a sectional view of the installation plate of the utility model;

[0026] Figure 4 It is a sectional view of the brush head of the utility model;

[0027] Figure 5 It is an enlarged view of A of the utility model Figure 4 ;

[0028] Legend: 1, metal folding plate; 2, first spring; 3, wire; 4, brush head; 41, base; 42, conductive layer; 43, base layer; 44, wear-resistant layer; 5, fixing device; 51, mounting plate; 52, groove; 53, second spring; 54, insertion rod; 55, mounting groove; 56, insertion hole; 57, pull plate; 58, sharp convex; 59, sliding block; 510, sliding groove; 511, rubber ring; 512, limiting groove; 513, metal bump. DETAILED DESCRIPTION

[0029] Referring to Figures 1-5 The embodiment shown discloses a wear-resistant motor carbon brush, which comprises a metal folding plate 1, one end of the metal folding plate 1 is fixedly connected with a first spring 2, one end of the first spring 2 is provided with a brush head 4, wherein the brush head 4 is composed of a base 41, a conductive layer 42, a base layer 43 and a wear-resistant layer 44, one end of the first spring 2 is provided with a fixing device 5, the fixing device 5 comprises a mounting plate 51, wherein the mounting plate 51 and the base 41 are detachably connected, the inside of the first spring 2 is provided with a wire 3, wherein both ends of the wire 3 are fixedly connected with the metal folding plate 1 and the mounting plate 51 respectively. When the carbon brush needs to be used, the staff installs the first spring 2 and the wire 3 through the metal folding plate 1, the external current enters the brush head 4 through the metal folding plate 1 and the wire 3, the brush head 4 drives the motor to rotate, when the brush head 4 is worn and cannot be used, the staff dismounts and replaces the brush head 4 through the fixing device 5.

[0030] Referring to Figures 1-5As shown, the mounting plate 51 is fixedly connected to one end of the first spring 2, and recesses 52 are formed on both sides of the mounting plate 51. The second spring 53 is fixedly connected to the mounting plate 51 through the recesses 52. One end of the second spring 53 is fixedly connected to a plug rod 54. The base 41 is provided with a mounting groove 55 corresponding to the mounting plate 51. The size of the mounting groove 55 is matched with the size of the mounting plate 51. The base 41 is provided with two symmetrical insertion holes 56 through the mounting groove 55. The size of the plug rod 54 is matched with the size of the insertion hole 56. The upper surface of the mounting plate 51 is fixedly connected with a metal bump 513. When it is necessary to replace the brush head 4, the worker first moves the new brush head 4 to the mounting plate 51. At this time, the worker moves the plug rod 54, and the plug rod 54 moves towards the inside of the recess 52. The second spring 53 is contracted. At this time, the worker inserts the mounting plate 51 into the mounting groove 55 of the base 41 of the brush head 4. When the plug rod 54 moves to the position of the insertion hole 56, under the action of the restoring force of the second spring 53, the plug rod 54 is inserted into the insertion hole 56 of the base 41. The effect of fixing the brush head 4 is achieved. At this time, the metal bump 513 of the mounting plate 51 is in contact with the base 41, which is convenient for current transmission. Through the fixing device 5, the effect of fixing the brush head 4 is achieved. When the brush head 4 is worn out, the worker can replace the brush head 4 alone, avoiding replacement of all parts of the carbon brush, thereby reducing the waste of resources.

[0031] Referring to Figures 1-5 As shown, one end of the plug rod 54 is fixedly connected with a sharp protrusion 58, and the sharp end of the sharp protrusion 58 is away from the plug rod 54. The sharp protrusion 58 is convenient for the worker to insert the plug rod 54 into the insertion hole 56 of the base 41, which brings convenience to the worker. The circular surface of the plug rod 54 is fixedly connected with a pull plate 57, and the surface of the pull plate 57 is provided with anti-skid lines. The pull plate 57 increases the friction between the worker's hand and the plug rod 54, thereby facilitating the worker to move the plug rod 54, which brings convenience to the worker.

[0032] Referring to Figures 1-5As shown, the arc surface of the insertion rod 54 is fixedly connected with two symmetric sliding blocks 59, and the mounting plate 51 is provided with a sliding groove 510 corresponding to the sliding blocks 59, wherein the sliding blocks 59 and the sliding groove 510 are slidingly matched. By moving the sliding blocks 59 of the insertion rod 54 in the sliding groove 510 of the mounting plate 51, the moving direction of the insertion rod 54 is limited, avoiding shaking of the insertion rod 54. The arc surface of the insertion rod 54 is inlaid with a rubber ring 511, and the base 41 is provided with a limiting groove 512 corresponding to the rubber ring 511, wherein the size of the limiting groove 512 is matched with the size of the rubber ring 511. When the insertion rod 54 is inserted into the insertion hole 56 of the base 41, the inner wall of the insertion hole 56 of the base 41 extrudes the rubber ring 511, and the rubber ring 511 deforms. When the rubber ring 511 moves to the position of the limiting groove 512, under the action of the self-resetting elastic force of the rubber ring 511, the rubber ring 511 enters the limiting groove 512, achieving the effect of fixing the insertion rod 54, avoiding the situation that the second spring 53 deforms when the brush head 4 works, so that the insertion rod 54 moves out of the insertion hole 56, and the brush head 4 falls off.

[0033] Referring to Figures 1-5 As shown, the base layer 43 wraps the conductive layer 42, wherein the material of the conductive layer 42 is copper, and the wear-resistant layer 44 wraps the base layer 43, wherein the material of the base layer 43 is natural graphite, and the conductive layer 42 and the base layer 43 and the wear-resistant layer 44 are fixedly connected with the base 41. The material of the conductive layer 42 inside the brush head 4 is copper, and copper has high conductivity, which improves the conductivity effect of the brush head 4. The material of the wear-resistant layer 44 is nickel-containing graphite. The nickel alloy is coated on the surface of the graphite particles by physical or chemical methods, and the nickel alloy helps to reduce friction and wear by keeping the lubricating properties of the brush head 4.

[0034] Working principle: when the carbon brush needs to be used, the staff installs the first spring 2 and the wire 3 through the metal folding plate 1, the external current enters the brush head 4 through the metal folding plate 1 and the wire 3, the brush head 4 drives the motor to rotate, when the brush head 4 is worn and cannot be used, the staff first moves the plug rod 54 through the pull plate 57, the plug rod 54 moves out of the insertion hole 56 of the base 41, at this time the staff pulls out the brush head 4, then the staff moves the new brush head 4 to the mounting plate 51, at this time the staff moves the plug rod 54 through the pull plate 57, the plug rod 54 moves to the inside of the recess 52, the slider 59 of the plug rod 54 moves in the sliding groove 510 of the mounting plate 51, which achieves the effect of limiting the moving direction of the plug rod 54, the second spring 53 is contracted, then the staff inserts the mounting plate 51 into the installation groove 55 of the base 41 of the brush head 4, when the plug rod 54 moves to the position of the insertion hole 56, under the action of the reset elastic force of the second spring 53, the plug rod 54 is inserted into the insertion hole 56 of the base 41, when the rubber ring 511 on the plug rod 54 contacts with the inner wall of the base 41, the inner wall of the insertion hole 56 of the base 41 extrudes the rubber ring 511, the rubber ring 511 deforms, when the rubber ring 511 moves to the position of the limiting groove 512, under the action of the reset elastic force of the rubber ring 511, the rubber ring 511 enters the limiting groove 512, which achieves the effect of fixing the plug rod 54, avoiding the situation that the second spring 53 deforms when the brush head 4 works, so that the plug rod 54 moves out of the insertion hole 56 and the brush head 4 falls off, after the brush head 4 is installed, the metal protrusion 513 of the mounting plate 51 contacts with the base 41, which is convenient for current transmission, through the fixing device 5, the effect of fixing the brush head 4 is achieved, which is convenient for the staff to replace the brush head 4 alone when the brush head 4 is worn, avoiding replacing all parts of the carbon brush, thereby reducing the waste of resources.

Claims

1. A wear-resistant motor carbon brush comprising a metal flap (1), characterized in that: One end of the metal folding plate (1) is fixedly connected with a first spring (2), one end of the first spring (2) is provided with a brush head (4), wherein the brush head (4) is combined by a base (41), a conductive layer (42), a basic layer (43) and a wear-resistant layer (44), one end of the first spring (2) is provided with a fixing device (5), the fixing device (5) comprises a mounting plate (51), wherein the mounting plate (51) and the base (41) are detachably connected, the inside of the first spring (2) is provided with a wire (3), wherein both ends of the wire (3) are fixedly connected with the metal folding plate (1) and the mounting plate (51) respectively.

2. A wear resistant motor carbon brush according to claim 1, characterized in that: The mounting plate (51) is fixedly connected at one end of the first spring (2), recesses (52) are formed on both sides of the mounting plate (51), the mounting plate (51) is fixedly connected with a second spring (53) through the recesses (52), one end of the second spring (53) is fixedly connected with a plug rod (54), the base (41) is provided with a mounting groove (55) corresponding to the mounting plate (51), wherein the size of the mounting groove (55) is matched with the size of the mounting plate (51), the base (41) is provided with two symmetrical plug holes (56) through the mounting groove (55), wherein the size of the plug rod (54) is matched with the size of the plug hole (56), the upper surface of the mounting plate (51) is fixedly connected with a metal protrusion (513).

3. A wear resistant motor carbon brush according to claim 2, characterized in that: One end of the plug rod (54) is fixedly connected with a sharp protrusion (58), wherein the sharp end of the sharp protrusion (58) is away from the plug rod (54).

4. A wear resistant motor carbon brush according to claim 3, characterized in that: The circular surface of the plug rod (54) is fixedly connected with a pull plate (57), wherein the surface of the pull plate (57) is provided with anti-skid lines.

5. A wear resistant motor carbon brush according to claim 4, characterized in that: The circular surface of the plug rod (54) is fixedly connected with two symmetrical sliding blocks (59), the mounting plate (51) is provided with a sliding groove (510) corresponding to the sliding block (59), wherein the sliding block (59) is slidingly matched with the sliding groove (510).

6. A wear resistant motor carbon brush according to claim 5, characterized in that: The circular surface of the plug rod (54) is inlaid with a rubber ring (511), the base (41) is provided with a limiting groove (512) corresponding to the rubber ring (511), wherein the size of the limiting groove (512) is matched with the size of the rubber ring (511).

7. A wear resistant motor carbon brush according to claim 1, characterized in that: The basic layer (43) wraps the conductive layer (42), wherein the material of the conductive layer (42) is copper, the wear-resistant layer (44) wraps the basic layer (43), wherein the material of the basic layer (43) is natural graphite, the conductive layer (42), the basic layer (43) and the wear-resistant layer (44) are fixedly connected with the base (41).

8. A wear resistant motor carbon brush according to claim 7, characterized in that: The material of the wear-resistant layer (44) is nickel-containing graphite.

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