Arc slotted carbon block of window lifting motor

Abstract

The utility model discloses an arc slotted carbon block of a window lifting motor, which relates to the technical field of motors, and is characterized by comprising a carbon block body, one end of the carbon block body is provided with a fixing part for mounting and fixing, and the other end of the carbon block body is provided with a contact part; the contact part is used for being in matched contact with the commutator, two arc-shaped contact surfaces used for being in contact with the peripheral side wall of the commutator are formed on the contact part, and the contact surfaces are in an arc shape of which the two ends are gradually far away from the commutator in the width direction. According to the utility model, the distance is formed between the two contact surfaces, the contact area with a commutator is reduced, the contact effect is ensured, the contact area is increased through the arc-shaped contact surfaces, the problem of poor contact caused by direct physical contact between the carbon block and the commutator is solved, and the service life of a motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically to an arc-grooved carbon block for a window-sliding motor. Background Technology

[0002] The car window motor is a power drive for electric windows. It uses the vehicle's power supply to drive the electric motor of the window regulator, causing the regulator to move up and down, which in turn moves the window glass up and down, thus achieving the purpose of automatic opening and closing of the car window.

[0003] Currently, in the field of electric motors, especially in automotive window motors, the commonly used internal working mechanism is that the carbon block and the commutator are in direct physical contact.

[0004] However, existing traditional contact methods come with several key technical challenges: First, poor contact between the carbon block and the commutator surface leads to uneven current transmission, affecting the stability of motor operation and causing uneven motor speed, excessive vibration, and abnormal noise. Second, uneven wear during operation reduces the contact quality between the carbon block and the commutator, affecting conductivity and mechanical strength. Third, other problems include increased resistance, electrical sparks, or reduced lifespan. These issues contribute to unstable motor performance, severely impacting the user experience and requiring improvement. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide an arc-grooved carbon block for a window regulator motor to solve the problem of poor contact caused by direct physical contact between the carbon block and the commutator. The specific solution is as follows:

[0006] A slotted carbon block for a window retractor motor includes a carbon block body, one end of which is provided with a fixing part for installation and fixing, and the other end is provided with a contact part; the contact part is used to match and contact with a commutator, and the contact part forms two arc-shaped contact surfaces for contacting the outer peripheral sidewall of the commutator, and the contact surfaces are arc-shaped with both ends gradually moving away from the commutator along the width direction.

[0007] Preferably, the contact portion is provided with a V-shaped groove, the two contact surfaces are located on both sides of the V-shaped groove, and the side of the two contact surfaces that are far apart from each other is provided with an arc surface. The V-shaped groove, the arc surface on both sides of the V-shaped groove, and the contact surface are arranged along the commutator axial direction.

[0008] Preferably, the arc surface is concave in the middle, and the V-groove forms two slotted surfaces that are respectively connected to the adjacent contact surfaces, and the slotted surfaces are concave in the middle.

[0009] Preferably, the distance from the bottom of the V-groove to the fixing part is greater than the minimum distance from the arc surface to the fixing part.

[0010] Preferably, the fixing part is provided with snap ring fixing surfaces on the left and right sides, and the snap ring fixing surfaces are used to connect and fix with the brush arm.

[0011] As can be seen from the above solutions, this application provides an arc-grooved carbon block for a window reversing motor. The arc-grooved carbon block of the window reversing motor reduces the contact area with the commutator while ensuring the contact effect by forming a gap between the two contact surfaces. Furthermore, the arc-shaped contact surface increases the contact area, solving the problem of poor contact caused by direct physical contact between the carbon block and the commutator, and extending the motor life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the carbon block body in this embodiment;

[0013] Figure 2 This is a schematic diagram of the main structure of the carbon block body in this embodiment;

[0014] Figure 3 This is a schematic diagram of the mating structure between the carbon block body and the commutator in this embodiment;

[0015] Figure 4 These are the test results of the corrugated performance of carbon blocks in existing technologies;

[0016] Figure 5 These are the test results of the carbon block corrugation performance in this embodiment.

[0017] Explanation of reference numerals in the attached drawings: 1. Carbon block body; 11. Arc surface; 12. V-groove; 121. Grooved surface; 13. Contact surface; 2. Fixing part; 21. Snap ring fixing surface; 3. Commutator. Detailed Implementation

[0018] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] like Figure 1As shown, a slotted carbon block for a window regulator motor includes a carbon block body 1. A fixing part 2 for mounting and fixing is provided at one end of the carbon block body 1, and a contact part is provided at the other end. The contact part is used for mating contact with a commutator 3, and the contact part forms two arc-shaped contact surfaces 13 for contacting the outer peripheral sidewall of the commutator 3. The contact surfaces 13 have an arc shape that gradually moves away from the commutator 3 at both ends along the width direction. Therefore, the slotted carbon block of this window regulator motor reduces the contact area with the commutator 3 while ensuring effective contact by creating a gap between the two contact surfaces 13. At the same time, the arc shape of the contact surfaces 13 increases the contact area with the commutator 3 while maintaining contact with the commutator 3, thereby ensuring effective contact and solving the problem of poor contact caused by direct physical contact between the carbon block and the commutator 3. The fixing part 2 is provided with snap ring fixing surfaces 21 on the left and right sides. The snap ring fixing surfaces 21 are used to connect and fix with the brush arm, so that the arc-grooved carbon block of the window motor can maintain effective contact with the commutator 3 while being fixed by the fixing part 2, thereby achieving stable electrical conduction.

[0020] like Figure 1 , Figure 2 As shown, in this embodiment, the contact portion is provided with a V-groove 12, and two contact surfaces 13 are located on both sides of the V-groove 12. An arc surface 11 is provided on the side of the two contact surfaces 13 that is far apart from each other. The V-groove 12, the arc surface 11 on both sides of the V-groove 12, and the contact surface 13 are arranged along the axial direction of the commutator 3. The arc surface 11 has a concave shape in the middle, and the V-groove 12 forms two slotted surfaces 121 that are respectively connected to adjacent contact surfaces 13. The slotted surfaces 121 also have a concave shape in the middle. Meanwhile, in this embodiment, the distance from the bottom of the V-groove 12 to the fixing part 2 is greater than the minimum distance from the arc surface 11 to the fixing part 2.

[0021] Comparative Example 1

[0022] Comparative Example 1 is a carbon block in the prior art that does not have a V-groove to form an arc-shaped contact surface.

[0023] The tests included noise reduction and ripple performance testing. The test results are shown in Table 1 below. Figure 4 and Figure 5 As shown:

[0024] Table 1 Noise Reduction Test Results

[0025]

[0026] As can be seen from Table 1 above, the present application embodiment reduces the noise by 2dB compared to the existing carbon block by using the arc-shaped contact surface 13 to contact the commutator 3, which has a significant effect on improving noise reduction.

[0027] like Figure 4 , Figure 5 As shown, by reducing the occurrence of poor contact between the carbon block and the commutator 3, the current is ensured to flow smoothly from the carbon block to the commutator 3 in this embodiment, thereby significantly improving the overall ripple performance of the motor. In addition, the arc-shaped contact surface 13 enhances the fit between the carbon block and the commutator 3 in this embodiment, preventing the carbon block from significantly bouncing when crossing the groove and affecting the stability of the sound, thus effectively avoiding the problem of large sound fluctuations.

[0028] Furthermore, the test revealed that the existing carbon block produced a significant M-wave pattern in its ripple, while the carbon block in this embodiment exhibited excellent ripple performance and did not show a significant M-wave pattern, thereby effectively improving the ripple characteristics of the motor.

[0029] In summary, this application provides an arc-grooved carbon block for a window retractor motor. The arc-grooved carbon block of the window retractor motor reduces the contact area with the commutator 3 while ensuring the contact effect by forming a gap between the two contact surfaces 13. Furthermore, the arc-shaped contact surface 13 increases the contact area, solving the problem of poor contact caused by direct physical contact between the carbon block and the commutator 3, and extending the motor life.

[0030] The terms “first,” “second,” “third,” “fourth,” etc., used in this application (if applicable) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, or apparatus.

[0031] It should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0032] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A circular-arc slotted carbon block of a window-shaking motor, comprising a carbon block body (1), characterized in that: One end of the carbon block body (1) is provided with a fixed part (2) for installation and fixation, and the other end is provided with a contact part; the contact part is used for matching contact with a commutator (3), and the contact part is formed with two arc-shaped contact surfaces (13) for contacting the outer peripheral side wall of the commutator (3), and the contact surfaces (13) are in the shape of arcs gradually away from the commutator (3) at both ends along the width direction.

2. The arc slot carbon block of a window-shaking motor according to claim 1, characterized in that: The contact part is provided with a V-shaped groove (12), and the two contact surfaces (13) are located on both sides of the V-shaped groove (12), and the side where the two contact surfaces (13) are away from each other is provided with a circular arc surface (11), and the V-shaped groove (12) and the circular arc surface (11) and the contact surface (13) located on both sides of the V-shaped groove (12) are arranged along the axial direction of the commutator (3).

3. The arc slot carbon block of a window regulator motor according to claim 2, characterized in that: The circular arc surface (11) is in the shape of a concave inward in the middle, the V-shaped groove (12) is formed with two slot surfaces (121) connected with the adjacent contact surfaces (13) respectively, and the slot surfaces (121) are in the shape of a concave inward in the middle.

4. The arc slot carbon block of a window regulator motor according to claim 3, characterized in that: The distance from the groove bottom of the V-shaped groove (12) to the fixed part (2) is greater than the minimum distance from the circular arc surface (11) to the fixed part (2).

5. The arc slot carbon block of a window regulator motor according to claim 1, characterized in that: The fixed part (2) is provided with snap spring fixing surfaces (21) located on the left and right sides, and the snap spring fixing surfaces (21) are used for connecting and fixing with the brush arm.

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