Motor rear end cover insulation brush carrier plate

Abstract

The utility model discloses a motor rear end cover insulation brush carrier plate, which relates to the technical field of motor parts and comprises a brush carrier plate body, brush grooves are symmetrically arranged at the top end of the brush carrier plate body, connecting plates are fixedly connected with the bottoms of two ends of the brush grooves, screw holes are arranged on the connecting plates, and the connecting plates and the brush carrier plate body are fixed through bolts and screw holes in a threaded mode. Through the arrangement of the extension groove device, when a carbon brush is installed in a brush groove in the brush carrier plate body, the carbon brush can be inserted into the brush groove firstly, then a telescopic rod is held by a hand to rotate a rotating shaft according to the length of the carbon brush, and therefore a steel rope is wound around the surface of a positioning pile to be wound, the purpose that the steel rope pulls the extension groove to move is achieved, and after the steel rope is pulled to be consistent with the carbon brush, the carbon brush is fixed. The telescopic rod can be inserted into the limiting groove to be fixed, so that the steel rope is limited, the extending groove is kept still to be clamped with the carbon brush, and the effect that the brush groove can be freely adjusted when the carbon brushes with different lengths are installed is effectively achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor components, in particular to an insulating brush holder plate for a rear end cover of a motor. Background Art

[0002] Motor carbon brushes are used on the commutator or slip ring of the motor as sliding contacts for conducting and importing current. Generally, carbon brushes are mainly made of graphite, impregnated graphite, and metal (including copper and silver) graphite. When working, the carbon brushes need to be installed on the carbon brush holder. During installation, pressure is applied to the carbon brushes in sliding contact with the commutator or slip ring surface through a spring, so that it can stably conduct current between the fixed body and the rotating body.

[0003] For example, announcement number CN205945335U discloses a motor rear end cover brush holder plate, including a rear end cover brush holder plate, a bearing placement hole is formed at the center of the rear end cover brush holder plate, the bearing placement hole is formed with an annular baffle extending radially inward, a bearing and a corrugated washer are matched in the bearing placement hole, the bearing is pressed into the bearing placement hole, and the rear end cover brush holder plate is provided with an inductor placement block for fixing the inductor and a capacitor placement block for fixing the capacitor. The inductor placement block and the capacitor placement block are both composed of two positioning blocks, the positioning blocks are arranged in an arc shape relative to the radial cross section of the rotating shaft, and the arc openings are arranged opposite to each other so that the cross section of the two positioning blocks constitutes a circular or elliptical structure. The utility model protects and limits components such as inductors and capacitors through two arc-shaped positioning blocks, thereby preventing components such as capacitors and inductors from tilting or pin breakage due to external forces.

[0004] However, the widths of carbon brushes of different models are the same, and the difference between carbon brushes of different models lies in the lengths. Different motors require different types of carbon brushes, and existing carbon brush holders cannot adjust the length of the brush slots, resulting in different types of motors requiring different carbon brush holders.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an insulating brush holder plate for the rear end cover of a motor is proposed. Utility Model Content

[0006] The purpose of the present invention is to provide an insulating brush holder plate for the rear end cover of a motor, so as to solve the problem that the carbon brush holders proposed in the above background technology cannot adjust the brush groove length, resulting in different models of motors needing to use different carbon brush holders.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulating brush holder plate for the rear end cover of a motor, comprising a brush holder plate body, a brush groove symmetrically installed on the top of the brush holder plate body, a connecting plate fixedly connected to the bottom of both ends of the brush groove, screw holes are drilled on the connecting plate, and the connecting plate and the brush holder plate body are threadedly fixed by bolts and screw holes, the top of the bolt is rotatably connected to a rotating shaft, the top of the rotating shaft is fixedly connected to a limiting plate, a steel rope is wound around the surface of the rotating shaft, an extension groove is slidably connected to the inner wall of the brush groove, the cross-section of the extension groove away from the brush groove is symmetrically fixedly connected to a connecting ring, the top of the brush holder plate body is fixedly connected to a positioning pile corresponding to the connecting ring, and the steel rope is wound around the surface of the positioning pile away from the rotating shaft and fixedly connected to the connecting ring.

[0008] Furthermore, a groove is carved in the middle of the top of the limiting plate, and a telescopic rod is installed in the groove.

[0009] Furthermore, a limiting groove is drilled on the limiting plate located on the side of the groove, and the telescopic rod is engaged with the limiting groove through telescoping.

[0010] Furthermore, the telescopic rod is designed to be U-shaped.

[0011] Furthermore, slide grooves are symmetrically opened at both ends of the extension groove, and a compression spring is installed at one end of the slide groove close to the brush groove.

[0012] Furthermore, a sliding block corresponding to the sliding block is fixedly connected to the inner wall of the brush groove, and the sliding block is engaged with the sliding block, and a side end of the sliding block is fixedly connected to the compression spring.

[0013] Furthermore, the top of the bolt is irregularly shaped.

[0014] Furthermore, the positioning pile is fixedly connected to a lock buckle at one end away from the rotating shaft, and the lock buckle is engaged with the connecting ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model realizes that when installing the carbon brush in the brush groove on the brush holder plate body, the carbon brush can be inserted into the brush groove first, and then the telescopic rod is rotated according to the length of the carbon brush, so that the steel rope is wound around the surface of the positioning pile to achieve the purpose of the steel rope pulling the extension groove to move. After it is pulled to be consistent with the carbon brush, the telescopic rod can be inserted into the limit groove for fixation, thereby limiting the steel rope and making the extension groove remain stationary and engage with the carbon brush, effectively achieving the effect of freely adjusting the brush groove when installing carbon brushes of different lengths;

[0017] 2. The utility model adopts the arrangement of the telescopic rod and the limiting groove. When the rotating shaft is rotated to retract or release the steel rope, the telescopic rod can be pulled upward, so that the telescopic rod can be taken out of the limiting groove and rotated. When the steel rope is limited, the telescopic rod is U-shaped and can be inserted into the limiting groove to achieve a locking and limiting effect.

[0018] 3. At the same time, when adjusting the extension slot, the steel rope can be pulled to extend the extension slot. If it needs to be shortened, the rotating shaft can be rotated in the opposite direction to release the steel rope. At this time, the compression spring automatically rebounds, and the extension slot can be automatically retracted into the brush slot through the sliding of the slider and the slide slot, so as to shorten the adjustment. Since the top of the bolt cannot be twisted, the top side of the bolt is designed with an irregular shape to facilitate twisting and installation with a wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the axonometric structure of the brush rack;

[0020] Figure 2 Schematic diagram of the brush tank structure;

[0021] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 Schematic diagram of the chute structure.

[0023] In the figure: 1. Brush holder body; 2. Brush groove; 3. Extension groove; 4. Connecting plate; 5. Screw hole; 6. Bolt; 7. Limiting plate; 8. Telescopic rod; 9. Slide; 10. Positioning pile; 11. Steel rope; 12. Connecting ring; 13. Groove; 14. Compression spring; 15. Limiting groove; 16. Slider. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1: Figure 1 - Figure 3 As shown, an insulating brush holder plate for the rear end cover of a motor includes a brush holder plate body 1, a brush groove 2 is symmetrically installed on the top of the brush holder plate body 1, and a connecting plate 4 is fixedly connected to the bottom of both ends of the brush groove 2. Screw holes 5 are drilled on the connecting plate 4, and the connecting plate 4 and the brush holder plate body 1 are threadedly fixed to the screw holes 5 through bolts 6. The top of the bolt 6 is rotatably connected to a rotating shaft, and the top of the rotating shaft is fixedly connected to a limiting plate 7. A steel rope 11 is wound around the surface of the rotating shaft, and an extension groove 3 is slidably connected to the inner wall of the brush groove 2. The cross-section of the extension groove 3 at one end away from the brush groove 2 is symmetrically fixedly connected to a connecting ring 12. The top of the brush holder plate body 1 is fixedly connected to a positioning pile 10 corresponding to the connecting ring 12, and the steel rope 11 is wound around the surface of the positioning pile 10 at one end away from the rotating shaft and is fixedly connected to the connecting ring 12.

[0026] Furthermore, a groove 13 is carved in the middle of the top of the limiting plate 7 , and the telescopic rod 8 is installed in the groove 13 .

[0027] Furthermore, a limiting groove 15 is cut on the limiting plate 7 located at the side of the groove 13, and the telescopic rod 8 is engaged with the limiting groove 15 through telescoping.

[0028] Furthermore, the telescopic rod 8 is designed to be U-shaped.

[0029] Example 2: Figure 2 - Figure 4 As shown, the insulating brush holder plate of the rear end cover of the motor proposed by the present invention is another implementation method of the present invention compared with the first embodiment. When working, it is set.

[0030] Furthermore, slide grooves 9 are symmetrically formed at both ends of the extension groove 3 , and a compression spring 14 is installed at one end of the slide groove 9 close to the brush groove 2 .

[0031] Furthermore, a slider 16 corresponding to the slide groove 9 is fixedly connected to the inner wall of the brush groove 2 , and the slider 16 is engaged with the slide groove 9 , and a side end of the slider 16 is fixedly connected to the compression spring 14 .

[0032] Furthermore, the top of the bolt 6 is irregularly shaped.

[0033] Furthermore, one end of the positioning pile 10 away from the rotating shaft is fixedly connected to a lock buckle, and the lock buckle is engaged with the connecting ring 12 .

[0034] Working principle: When using this type of insulating brush holder plate on the rear end cover of the motor, first, when installing the carbon brush in the brush groove 2 on the brush holder plate body 1, the carbon brush can be inserted into the brush groove 2 first, and then the telescopic rod 8 is held by hand and the rotating shaft is rotated according to the length of the carbon brush, so that the steel rope 11 is wound around the surface of the positioning pile 10 to achieve the purpose of the steel rope 11 pulling the extension groove 3 to move. After it is pulled to be consistent with the carbon brush, the telescopic rod 8 can be inserted into the limit groove 15 for fixation, thereby limiting the steel rope 11, so that the extension groove 3 remains stationary and engages with the carbon brush, effectively achieving the effect of freely adjusting the brush groove 2 when installing carbon brushes of different lengths.

[0035] Secondly, when the rotating shaft is rotated to retract or extend the steel rope 11, the telescopic rod 8 can be pulled upward so that the telescopic rod 8 can be taken out of the limit groove 15 and rotated. When limiting the steel rope 11, since the telescopic rod 8 is U-shaped, it can be inserted into the limit groove 15 to achieve a locking and limiting effect.

[0036] Finally, when adjusting the extension slot 3, the steel rope 11 can be pulled to extend the extension slot 3. If it needs to be shortened, the rotating shaft can be rotated in the opposite direction to release the steel rope 11. At this time, the compression spring 14 automatically rebounds, and the extension slot 3 can be automatically retracted into the brush slot 2 through the sliding of the slider 16 and the slide groove 9, thereby performing shortening adjustment. Since the top of the bolt 6 cannot be twisted, the top side of the bolt 6 is designed to be an irregular shape, which is convenient for twisting and installing with a wrench.

[0037] This is the working principle of the insulating brush holder plate of the rear end cover of the motor.

[0038] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. An insulating brush holder plate for a rear end cover of a motor, comprising a brush holder plate body (1), characterized in that: The brush frame plate body (1) is symmetrically provided with a brush groove (2) at the top end, and the bottom ends of the brush groove (2) are fixedly connected with a connecting plate (4), screw holes (5) are drilled on the connecting plate (4), and the connecting plate (4) and the brush frame plate body (1) are screwed and fixed by bolts (6) and the screw holes (5), the top end of the bolt (6) is rotatably connected with a rotating shaft, the top end of the rotating shaft is fixedly connected with a limiting plate (7), a steel rope (11) is wound around the surface of the rotating shaft, the inner wall of the brush groove (2) is slidably connected with an extension groove (3), and the cross section of the extension groove (3) away from the brush groove (2) is symmetrically fixedly connected with a connecting ring (12), the top end of the brush frame plate body (1) is fixedly connected with a positioning pile (10) corresponding to the connecting ring (12), and the end of the steel rope (11) away from the rotating shaft is wound around the surface of the positioning pile (10) and fixedly connected to the connecting ring (12).

2. The insulating brush holder plate of the motor rear end cover according to claim 1, characterized in that: A groove (13) is cut in the middle of the top end of the limiting plate (7), and a telescopic rod (8) is installed in the groove (13).

3. The insulating brush holder plate of the motor rear end cover according to claim 2, characterized in that: A limiting groove (15) is cut on the limiting plate (7) located on the side of the groove (13), and the telescopic rod (8) is engaged with the limiting groove (15) through telescoping.

4. The insulating brush holder plate of the motor rear end cover according to claim 2, characterized in that: The telescopic rod (8) is designed to be U-shaped.

5. The insulating brush holder plate for the rear end cover of a motor according to claim 1, characterized in that: Slide grooves (9) are symmetrically formed at both ends of the extension groove (3), and a compression spring (14) is installed at one end of the slide groove (9) close to the brush groove (2).

6. The insulating brush holder plate for the rear end cover of a motor according to claim 5, characterized in that: A slider (16) corresponding to the slide groove (9) is fixedly connected to the inner wall of the brush groove (2), and the slider (16) is engaged with the slide groove (9), and the side end of the slider (16) is fixedly connected to the compression spring (14).

7. The motor rear end cover insulation brush holder plate according to claim 2, characterized in that: The top end of the bolt (6) is an irregular shape.

8. The insulating brush holder plate for the rear end cover of a motor according to claim 2, characterized in that: The positioning pile (10) is fixedly connected to a lock buckle at one end away from the rotating shaft, and the lock buckle is engaged with the connecting ring (12).

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