A brush for removing static electricity

Abstract

The utility model discloses a brush for removing static electricity, which relates to the field of brushes, including a brush body, the top of the brush body is sleeved with a square metal sheet, the top of the square metal sheet is fixedly connected with an L-shaped metal baffle, the top of the brush body is fixedly connected with two connecting wires, the outer ring of the connecting wire is provided with an anti-bending component, the anti-bending component includes a protective cover, two protective covers are provided, and both protective covers are sleeved on the connecting wire. The utility model is provided with an anti-bending component to prevent the connecting wire from bending and separating from the brush during the disassembly process of the brush, thereby protecting the connecting wire. At the same time, a buffer zone is formed between a plurality of elastic protrusions, which disperses stress when the connecting wire is bent, thereby reducing stress concentration. A plurality of regularly arranged elastic protrusions can distribute the buffer zone around the entire connecting wire, thereby reducing the bending of the connecting wire.

Description

Technical Field

[0001] The utility model relates to the field of electric brushes, in particular to an electric brush for removing static electricity. Background Art

[0002] A brush is a conductive component that forms an electrical connection by sliding contact with moving parts. It is generally used on a commutator or slip ring as a sliding contact body for importing and exporting current. The brush has good electrical, thermal and lubricating properties, and has certain mechanical strength and commutation spark instinct. It is an important component of the motor.

[0003] In the prior art, the anti-static brush rubs against the commutator during use, causing wear of the anti-static brush and requiring regular replacement. During the replacement process, the brush and the wire are easily bent, causing damage to the surface of the wire.

[0004] Therefore, it is necessary to invent a brush for removing static electricity to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a static electricity removal brush to solve the problem that the static electricity removal brush rubs against the commutator during use, causing the static electricity removal brush to be worn and needs to be replaced regularly. During the replacement process, bending is easily generated between the brush and the wire, causing damage to the surface of the wire.

[0006] To achieve the above object, the utility model provides the following technical solution: a brush for removing static electricity, comprising a brush body, a square metal sheet is sleeved on the top of the brush body, an L-shaped metal baffle is fixedly connected to the top of the square metal sheet, and two connecting wires are fixedly connected to the top of the brush body;

[0007] An anti-bending component is provided at the outer ring of the connecting line, and the anti-bending component includes a protective sleeve. Two protective sleeves are provided, and the two protective sleeves are both sleeved on the connecting line. A circular hole is opened on the top of the two protective sleeves, and a plurality of elastic protrusions are fixedly connected to the inner wall of the circular hole. A fixing plate is fixedly connected between the two protective sleeves, and a guide plate is fixedly connected to the side of the fixing plate close to the L-shaped metal baffle, and both sides of the guide plate are fixedly connected to limiting blocks.

[0008] Preferably, the L-shaped metal baffle is fixedly connected to a metal guide block on the side close to the protective cover, a slot is provided on the top of the metal guide block, the guide plate is slidably connected in the slot, and two limit bars are fixedly connected to the side of the metal guide block away from the L-shaped metal baffle, a plurality of circular grooves are provided on the sides of the two limit bars close to each other, and the two limit blocks are respectively fitted with the corresponding circular grooves.

[0009] Preferably, the two protective sleeves are fixedly connected with connecting plates on the sides away from each other, and the two connecting plates are rotatably connected with limiting rods on the sides close to the L-shaped metal baffle, and the end of the limiting rod is in contact with one side of the L-shaped metal baffle.

[0010] Preferably, the plurality of elastic protrusions are distributed in a circular array with the axis of the protective sleeve as the axis.

[0011] Preferably, the plurality of circular grooves are distributed in a linear array, and the surfaces of the two limit strips close to each other are wavy.

[0012] Preferably, the limiting block is hemispherical.

[0013] Preferably, the limiting rod is L-shaped, and a surface of the limiting rod that is in contact with the L-shaped metal baffle is an arc-shaped surface.

[0014] Technical effects and advantages of the utility model:

[0015] The utility model is provided with an anti-bending component to prevent the connecting wire from bending and separating from the brush during the disassembly process of the brush, thereby protecting the connecting wire. At the same time, a buffer zone is formed between multiple elastic protrusions to disperse stress when the connecting wire is bent, thereby reducing stress concentration. Multiple regularly arranged elastic protrusions can distribute the buffer zone around the entire connecting wire, reducing the bending of the connecting wire. The protective cover can also perform anti-bending treatment on different positions of the connecting wire within the length of the limit strip itself as required. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the static electricity removal brush of the utility model from the first perspective.

[0017] Figure 2 This is a schematic structural diagram of the static electricity removal brush of the utility model from a second viewing angle.

[0018] Figure 3 This is a schematic diagram of the structure of the anti-bending component of the utility model.

[0019] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0020] Figure 5 This is a schematic diagram of the limit rod structure of the utility model

[0021] In the figure: 1. brush body; 2. square metal sheet; 3. L-shaped metal baffle; 4. connecting wire; 5. protective cover; 6. connecting sheet; 7. limit rod; 8. elastic protrusion; 9. fixing sheet; 10. guide sheet; 11. limit block; 12. metal guide block; 13. limit strip. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figure 1-Figure 5 As shown, a brush for removing static electricity includes a brush body 1. The brush body 1 is also called a carbon brush. As a sliding contact part, it is a device for transmitting energy or signals between the fixed part and the rotating part of a motor or generator or other rotating machinery. The carbon brush is mainly made of graphite, impregnated graphite, and metal (containing copper and silver) graphite. It is generally made of pure carbon plus a coagulant and is suitable for eliminating static electricity when used in various motors, generators, and axle machines.

[0024] A square metal sheet 2 is sleeved on the top of the brush body 1, and both sides of the square metal sheet 2 are installed on the brush body 1 by screws. Two connecting wires 4 are fixedly connected to the top of the brush body 1. The ends of the two connecting wires away from the brush are intertwined and converged into a strand, and are fixedly connected with a metal guide sheet, which is used to connect to a power supply. An L-shaped metal baffle 3 is fixedly connected to the top of the square metal sheet 2, and the L-shaped metal baffle 3 prevents the connecting wire 4 from bending in one direction.

[0025] An anti-bending component is provided at the outer ring of the connecting wire 4, and the anti-bending component includes a protective sleeve 5. Two protective sleeves 5 are provided, and the two protective sleeves 5 are both sleeved on the outer ring of the connecting wire 4 to prevent the connecting wire 4 from being separated from the brush body 1 by external force when the connecting wire 4 is disassembled. A circular hole is opened on the top of the two protective sleeves 5, and the circular hole is for the connecting wire 4 to be inserted. A plurality of elastic protrusions 8 are fixedly connected to the inner wall of the circular hole. The elastic protrusion 8 is made of rubber and has elasticity. The plurality of elastic protrusions 8 are distributed in a circular array with the axis of the protective sleeve 5 as the axis. When the protective sleeve 5 is sleeved on the connecting wire 4, the plurality of elastic protrusions 8 and the connecting wire 4 fit each other. A fixing plate 9 is fixedly connected between the two protective sleeves 5, and the fixing plate 9 serves as a connection, so that the two protective sleeves 5 have an integrated structure and can be installed or removed at the same time. A guide plate 10 is fixedly connected to the side of the fixing plate 9 close to the L-shaped metal baffle 3. The guide plate 10 is T-shaped and serves as a guide, which facilitates the installation and use of the two protective sleeves 5. At the same time, after the protective sleeves 5 are installed, the horizontal shaking of the guide plate 10 is avoided, and the stability of the use of the protective sleeves 5 is increased. Limiting blocks 11 are fixedly connected on both sides of the guide plate 10. The limiting blocks 11 are hemispherical and are used to limit the vertical movement of the protective sleeves 5.

[0026] The utility model is provided with an anti-bending component to prevent the connecting wire 4 from bending and separating from the brush during the disassembly process of the brush, thereby protecting the connecting wire 4. At the same time, a buffer zone is formed between the multiple elastic protrusions 8, which disperses the stress when the connecting wire 4 is subjected to force and reduces the stress concentration phenomenon. The multiple regularly arranged elastic protrusions 8 distribute the buffer zone around the entire connecting wire 4, reducing the bending of the connecting wire 4 and connecting the connecting wire 4 and the brush body 1 to each other.

[0027] The L-shaped metal baffle 3 is fixedly connected to a metal guide block 12 on one side close to the protective sleeve 5. A notch is provided on the top of the metal guide block 12. The notch is T-shaped and cooperates with the guide piece 10, and the guide piece 10 is slidably connected in the notch. Two limit bars 13 are fixedly connected to the side of the metal guide block 12 away from the L-shaped metal baffle 3. The two limit bars 13 are located on both sides of the guide piece 10. The two limit bars 13 are made of rubber and are elastic. A plurality of circular grooves are provided on one side of the two limit bars 13 close to each other. The plurality of circular grooves are distributed in a linear array. The side of the two limit bars 13 close to each other is wavy. When the guide piece 10 is subjected to force and moves vertically, the guide piece 10 drives the limit block 11 to move. The limit block 11 will squeeze the protruding part of the wavy area of ​​the limit bar 13, so that the limit bar 13 is locally deformed to facilitate the passage of the limit block 11. After the guide piece 10 stops, the limit block 11 is located in the corresponding circular groove.

[0028] The protective cover 5 can also be moved within the length of the limiting strip 13 to perform anti-bending treatment on different positions of the connecting line 4 as required.

[0029] Specifically, an external force is first applied to the fixing block 9 so that the fixing block 9 drives the guide piece 10 to move vertically under the force, and the limit block 11 moves in the direction of the guide piece 10 to fit one side of the limit strip 13. The limit block 10 squeezes the limit strip 13 during the movement. After the limit strip 13 is deformed under the force, the limit block 10 passes through the corresponding circular groove. When the protective sleeve 5 moves to the required position, the limit block 11 is located in the circular groove of the limit strip 13. At this time, without applying external force, the guide piece 10 will not move under the action of the limit strip 13, so that the protective sleeve 5 remains in the required position to protect the connecting line 4, and the position of the protective sleeve 5 on the connecting line 4 is not bent under the force.

[0030] The two protective sleeves 5 are fixedly connected with a connecting piece 6 on the side away from each other to play a connecting role. The two connecting pieces 6 are rotatably connected to the limiting rod 7 on the side close to the L-shaped metal baffle 3. The limiting rod 7 is L-shaped. The limiting rod 7 is composed of a rod body and a limiting plate. The limiting plate is made of rubber and has elasticity. An arc surface is provided on one side of the limiting plate close to the connecting piece 6, and the arc surface of the limiting plate is in contact with one side of the L-shaped metal baffle 3.

[0031] Before the limit rod 7 is not used, the limit plate on the limit rod 7 faces the direction of the brush body 1. When the limit rod 7 is used, the limit rod 7 is rotated, and the protruding position of the arc surface area of ​​the limit plate on the limit rod 7 is tightly fitted with the L-shaped metal baffle 3, limiting the protective cover 5 on one side of the L-shaped metal baffle 3, avoiding the protective cover 5 from shaking when the connecting wire 4 is subjected to force, thereby increasing the stability of the limit cover 5.

[0032] It is particularly noted that when the protective cover 5 is moved, the upper limit plate on the limit rod 7 and the L-shaped metal stopper 3 need to be separated from each other to release the restriction on the protective cover 5 .

Claims

1. A brush for removing static electricity, comprising a brush body (1), characterized in that: A square metal sheet (2) is sleeved on the top of the brush body (1), an L-shaped metal baffle (3) is fixedly connected to the top of the square metal sheet (2), and two connecting wires (4) are fixedly connected to the top of the brush body (1); An anti-bending component is provided at the outer ring of the connecting line (4), and the anti-bending component includes a protective sleeve (5). Two protective sleeves (5) are provided, and the two protective sleeves (5) are both sleeved on the connecting line (4). The tops of the two protective sleeves (5) are each provided with a circular hole, and a plurality of elastic protrusions (8) are fixedly connected to the inner wall of the circular hole. A fixing plate (9) is fixedly connected between the two protective sleeves (5), and a guide plate (10) is fixedly connected to the side of the fixing plate (9) close to the L-shaped metal baffle (3), and both sides of the guide plate (10) are fixedly connected to limit blocks (11).

2. A brush for removing static electricity according to claim 1, characterized in that: A metal guide block (12) is fixedly connected to the side of the L-shaped metal baffle (3) close to the protective sleeve (5), a notch is provided on the top of the metal guide block (12), the guide plate (10) is slidably connected in the notch, and two limit bars (13) are fixedly connected to the side of the metal guide block (12) away from the L-shaped metal baffle (3), a plurality of circular grooves are provided on the sides of the two limit bars (13) close to each other, and the two limit blocks (11) are respectively fitted with the corresponding circular grooves.

3. The anti-static brush according to claim 1, characterized in that: The two protective sleeves (5) are fixedly connected to a connecting piece (6) on the side away from each other, and the two connecting pieces (6) are rotatably connected to a limiting rod (7) on the side close to the L-shaped metal baffle (3), and the end of the limiting rod (7) is in contact with one side of the L-shaped metal baffle (3).

4. The anti-static brush according to claim 1, characterized in that: The plurality of elastic protrusions (8) are distributed in a circular array with the axis of the protective sleeve (5) as the axis.

5. The anti-static brush according to claim 2, characterized in that: The plurality of circular grooves are distributed in a linear array, and the surfaces of the two limit strips (13) that are close to each other are wavy.

6. The anti-static brush according to claim 1, characterized in that: The limiting block (11) is hemispherical.

7. The anti-static brush according to claim 3, characterized in that: The limiting rod (7) is L-shaped, and the side of the limiting rod (7) that is in contact with the L-shaped metal baffle (3) is an arc-shaped surface.

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