A noise-reducing brush holder structure

Abstract

The application relates to the technical field of window shaking motor accessories, in particular to a brush holder structure with noise reduction, which comprises a brush holder body, a bearing and a stirring piece. The brush holder body is provided with a through hole, an embedding hole and a glue injection channel. The embedding hole is in communication with the through hole and the glue injection channel respectively. The side wall of the embedding hole is provided with a convex combination. The bearing is arranged in the embedding hole, and the side wall of the bearing is attached to the convex combination and forms a glue setting cavity. The bearing is provided with an annular hole and a waist-shaped hole. The glue injection channel is filled with glue liquid, which forms a glue wrapping structure after setting. The stirring piece comprises an annular body. One end of the annular body is provided with an extension end. The annular body is arranged in the annular hole, and each extension end extends into the glue setting cavity after passing through the waist-shaped hole. One end of the extension end is bent by a predetermined angle. When the annular body rotates, each extension end slides along the corresponding waist-shaped hole. The glue wrapping structure is arranged, and the advantage that a buffer structure is arranged at the bearing of the brush holder is realized.

Description

Technical Field

[0001] This application relates to the field of window regulator motor accessories technology, and more specifically to a noise-reducing brush holder structure. Background Technology

[0002] A window regulator motor is a motor used to raise and lower vehicle windows, and the brush holder is one of the main components of a window regulator motor.

[0003] Patent document (CN221767775U) discloses a window retractor motor, including a brush holder, as shown in the accompanying drawings of its specification. Figure 3 As can be seen, one end of the brush holder assembly has a bearing mounting hole, in which a ball bearing is fitted, and the drive shaft passes through the ball bearing. However, because there is no buffer structure at the bearing, the impact and vibration of the motor operation act directly on the bearing through the drive shaft, accelerating its wear, thereby causing abnormal motor vibration and greater noise.

[0004] Therefore, there is a need for a noise-reducing brush holder structure that features a buffer structure at the brush holder bearing, more uniform rubber coating, and more secure bearing installation. Summary of the Invention

[0005] The main objective of this application is to provide a noise-reducing brush holder structure, wherein the noise-reducing brush holder structure includes a brush holder body, a bearing, and an agitator. One end of the brush holder body has a through hole, a fitting hole, and a glue injection channel. One end of the fitting hole communicates with the through hole, and one end of the glue injection channel extends to the sidewall of the fitting hole. The sidewall of the fitting hole has a plurality of protrusions arranged in a ring array. The bearing is placed inside the fitting hole, and the sidewall of the bearing fits against the protrusions. The sidewall of the bearing, the wall of the fitting hole, and the sidewall of the protrusions together form a gelling cavity. One end face of the bearing has an annular hole, and the sidewall of the bearing has a plurality of oblong holes. The annular hole communicates with each oblong hole, and the end of each oblong hole facing away from the annular hole is connected to the through hole. The gelling chamber is interconnected, and the coating liquid is poured into the gelling chamber from the injection channel and forms a coating structure after solidification. The agitator includes an annular body with several extension ends at one end. The annular body is placed in the annular hole, and each extension end extends into the gelling chamber after passing through the corresponding waist-shaped hole. The end of the extension end extending into the gelling chamber is bent at a predetermined angle, and each extension end slides along the corresponding waist-shaped hole when the annular body rotates. By setting the coating structure, a buffer structure is provided at the brush holder bearing, extending the bearing's service life. One function of the agitator is to agitate the coating liquid in the gelling chamber, making the coating liquid more uniform. Secondly, when the coating liquid solidifies to form the coating structure, the agitator and the coating structure fit together, making the bearing installation more secure.

[0006] Another objective of this application is to provide a noise-reducing brush holder structure, wherein the connection between the annular hole and the waist-shaped hole is transitioned by an arc surface so that the extension end extends out of the waist-shaped hole in a curved shape.

[0007] To achieve at least one of the above-mentioned objectives, this application provides a noise-reducing brush holder structure, wherein the noise-reducing brush holder structure includes:

[0008] A brush holder body, one end of which has a through hole, a fitting hole, and a glue injection channel; one end of the fitting hole communicates with the through hole; one end of the glue injection channel extends to the sidewall of the fitting hole; the sidewall of the fitting hole has a plurality of protrusions arranged in a ring array; and

[0009] A bearing is placed within the fitting hole, and the sidewall of the bearing is in contact with the protrusion assembly. The sidewall of the bearing, the wall of the fitting hole, and the sidewall of the protrusion assembly together form a gelling cavity. One end face of the bearing has an annular hole, and the sidewall of the bearing has several oblong holes. The annular hole connects to each oblong hole, and the end of each oblong hole facing away from the annular hole connects to the gelling cavity. Adhesive liquid is injected into the gelling cavity through the injection channel and forms an adhesive structure after solidification.

[0010] An agitator includes an annular body with a plurality of extension ends at one end. The annular body is placed inside the annular hole, and each of the extension ends extends into the gelation cavity after passing through the corresponding waist-shaped hole. The end of the extension end extending into the gelation cavity is bent at a predetermined angle, and each of the extension ends slides along the corresponding waist-shaped hole when the annular body rotates.

[0011] In one or more embodiments of this application, the brush holder body includes an assembly portion and a guide portion. The guide portion is located at one end of the assembly portion and is fixedly connected to the assembly portion. The through hole extends from the assembly portion to the guide portion. The guide portion has a stepped hole with an opening at one end near the assembly portion. The middle section of the stepped hole at one end away from the assembly portion extends along the radial direction of the guide portion and forms the fitting hole. The highest point of the protrusion assembly is flush with the hole wall of the stepped hole.

[0012] In one or more embodiments of this application, each of the protrusion combinations includes a first protrusion and a second protrusion, the first protrusion and the second protrusion being spaced apart by a predetermined distance in the axial direction of the guide portion, and the extension end being located between the first protrusion and the second protrusion.

[0013] In one or more embodiments of this application, one end of the annular body opposite to the extension end extends a predetermined distance from the opening of the annular hole, and the one end of the annular body opposite to the extension end has a screwing groove.

[0014] In one or more embodiments of this application, the glue injection channel includes a spiral groove, a connecting hole, and a flow channel. The spiral groove is located at one end of the fitting hole near the assembly part, the flow channel is located on the side wall of the guide part, and the connecting hole extends from the bottom wall of one end of the flow channel toward the central axis of the guide part to the spiral groove.

[0015] In one or more embodiments of this application, the connection between the annular hole and the waist-shaped hole is transitioned by an arc surface.

[0016] In one or more embodiments of this application, the noise-reducing brush holder structure further includes a brush arm and two power terminals, both of which are mounted on the assembly part.

[0017] In this embodiment, the noise-reducing brush holder structure includes a brush holder body, a bearing, and an agitator. One end of the brush holder body has a through hole, a fitting hole, and a glue injection channel. One end of the fitting hole communicates with the through hole, and one end of the glue injection channel extends to the sidewall of the fitting hole. The sidewall of the fitting hole has a protrusion assembly. The bearing is placed inside the fitting hole, and the sidewall of the bearing fits against the protrusion assembly, together forming a gelling cavity. The bearing has an annular hole, and the sidewall of the bearing has a waist-shaped hole, one end of which communicates with the gelling cavity. The coating liquid is injected into the gelling cavity from the glue injection channel and forms a coating structure after solidification. The agitator... The component includes an annular body with an extension end at one end. The annular body is placed inside an annular hole, and each extension end extends into the gelling cavity after passing through an oblong hole. One end of the extension end is bent at a predetermined angle, and each extension end slides along the corresponding oblong hole when the annular body rotates. By setting a rubber coating structure, a buffer structure is provided at the brush holder bearing, extending the bearing's service life. By setting an agitator, one of its functions is to agitate the rubber coating liquid in the gelling cavity, making the rubber coating liquid more uniform. Secondly, after the rubber coating liquid solidifies to form a rubber coating structure, the agitator and the rubber coating structure fit together, making the bearing installation more secure. Attached Figure Description

[0018] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 The figure shows a schematic diagram of a noise-reducing brush holder structure according to this application;

[0020] Figure 2 The illustration shows a cross-sectional view of the guide section of the brush holder body;

[0021] Figure 3 The diagram shows a schematic of the bearing structure.

[0022] Figure 4 The diagram shows a schematic of the guide section at a certain angle. Detailed Implementation

[0023] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0024] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0025] While ordinal numbers such as "first," "second," etc., will be used to describe various components, this does not limit which components are used. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0027] Schematic illustration of a brush holder structure for noise reduction, see reference. Figures 1 to 4 According to a preferred embodiment of the present invention, a noise-reducing brush holder structure includes a brush holder body 10 and a bearing 20.

[0028] Specifically, such as Figure 2As shown, one end of the brush holder body 10 has a through hole 101, a fitting hole 102, and a glue injection channel 103. One end of the fitting hole 102 communicates with the through hole 101, and one end of the glue injection channel 103 extends to the side wall of the fitting hole 102. The side wall of the fitting hole 102 has a plurality of protrusions 104 arranged in a ring array. In addition, the bearing 20 is placed in the fitting hole 102, and the side wall of the bearing 20 is in contact with the protrusions 104. The side wall of the bearing 20, the hole wall of the fitting hole 102, and the side wall of the protrusions 104 together form a gelling cavity 105. The adhesive liquid is poured into the gelling cavity 105 from the glue injection channel 103 and forms an adhesive structure after solidification (not shown in the figure).

[0029] It should be noted that by interfering with the outer ring of the bearing 20 and the ring-arranged protrusions 104 to seal the fitting hole 102, the sidewall of the bearing 20, the hole wall of the fitting hole 102, and the sidewall of the protrusions 104 together form the gelation cavity 105. Subsequently, the coating liquid is poured into the gelation cavity 105 through the glue injection channel 103. After the coating liquid cools, the coating structure that is tightly fitted to the bearing 20 is formed. When the impact and vibration of the motor operation act on the bearing 20 through the drive shaft, the outer ring of the bearing 20 and the hole wall of the fitting hole 102 are in contact, except for a small part where the outer wall of the bearing 20 is in direct contact with the protrusions 104. The rest of the outer ring of the bearing 20 is in contact with the coating structure. The coating structure plays a buffering and shock-absorbing role, which can effectively reduce the wear of the outer wall of the bearing 20 and reduce abnormal noise. Compared with the prior art, it has the advantage of having a buffer structure at the brush holder bearing.

[0030] However, when the coating liquid is poured into the gelling cavity 105, since there is only one glue injection channel 103 on the brush holder body 10, that is, the glue injection channel 103 is only located on one side of the gelling cavity 105, the coating liquid is likely to overflow on the side of the gelling cavity 105 near the glue injection channel 103, while the side of the gelling cavity 105 away from the glue injection channel 103 is prone to air holes or gaps in the formed coating structure due to the uneven flow of residual air and glue liquid.

[0031] Therefore, in the embodiments of this application, such as Figure 2 and Figure 3As shown, one end face of the bearing 20 has an annular hole 201, and the side wall of the bearing 20 has a plurality of waist-shaped holes 202. The annular hole 201 connects to each of the waist-shaped holes 202, and the end of the waist-shaped hole 202 facing away from the annular hole 201 connects to the gelation chamber 105. The noise-reducing brush holder structure also includes a stirring member 30. The stirring member 30 includes an annular body 301. One end of the annular body 301 has a plurality of extension ends 302. The annular body 301 is placed in the annular hole 201, and each of the extension ends 302 extends into the gelation chamber 105 after passing through the corresponding waist-shaped hole 202. The end of the extension end 302 extending into the gelation chamber 105 is bent at a predetermined angle, and when the annular body 301 rotates, each of the extension ends 302 slides along the corresponding waist-shaped hole 202.

[0032] In addition, to facilitate the bending of the extension end 302, the connection between the annular hole 201 and the waist-shaped hole 202 is transitioned by an arc surface, that is, the connection between the annular hole 201 and the waist-shaped hole 202 has a guiding arc surface 203.

[0033] It should be noted that the initial orientation of the extension end 302 is flush with the central axis of the annular body 301. When the glue applicator inserts the end of the annular body 301 with the extension end 302 into the annular hole 201, the extension end 302 contacts the guide arc surface 203. As the annular body 301 is further pressed down, the extension end 302 is subjected to force and arcs along the guide arc surface 203, extending out of the waist-shaped hole 202 at a certain moment. It should be added that the length of the waist-shaped hole 202 is greater than the width of the extension end 302 to facilitate sliding of the extension end 302 along the waist-shaped hole 202. Additionally, the extension end 302 has a certain thickness. It should be noted that when... After the extension end 302 extends out of the waist-shaped hole 202, the glue applicator bends the extension end 302 at a predetermined angle to form a hook shape. Then, during the process of pouring the coating liquid, the annular body 301 is rotated, and the multiple hook-shaped extension ends 302 will stir in the gelling cavity 105, making the coating liquid poured into the gelling cavity 105 more evenly fill each area. This effectively reduces the phenomenon of air holes or gaps in the coating structure formed after the coating liquid solidifies. At the same time, when the coating liquid solidifies, the coating structure and the extension end 302 are embedded and penetrated into the waist-shaped hole 202, making the bearing 20 fit more tightly with the coating structure. This further improves the shock absorption capacity and makes the bearing 20 more securely installed.

[0034] It is evident that, compared to the prior art, one of the functions of the extension end 302 is to agitate the coating liquid, so that the coating liquid fills the gelation cavity 105 more evenly. Another function of the extension end 302 is to prevent the bearing 20 from coming out of the fitting hole 102.

[0035] Furthermore, in the embodiments of this application, such as Figure 1 As shown, the brush holder body 10 includes an assembly portion 106 and a guide portion 107. The guide portion 107 is located at one end of the assembly portion 106 and is fixedly connected to the assembly portion 106. The fixed connection method includes, but is not limited to, welding. The through hole 101 extends from the assembly portion 106 to the guide portion 107, as shown. Figure 2 As shown, the guide portion 107 has a stepped hole 1071 with an opening at one end near the assembly portion 106. The middle section of the stepped hole 1071 away from the assembly portion 106 extends along the radial direction of the guide portion 107 and forms the fitting hole 102. The highest point of the protrusion assembly 104 is flush with the hole wall of the stepped hole 1071.

[0036] More specifically, such as Figure 2 and Figure 4 As shown, each of the protrusion assemblies 104 includes a first protrusion 1041 and a second protrusion 1042, which are spaced apart by a predetermined distance along the axial direction of the guide portion 107. The extension end 302 is located between the first protrusion 1041 and the second protrusion 1042. By providing the spaced-apart first protrusion 1041 and second protrusion 1042, it facilitates the flow of the overmolding liquid across a single protrusion assembly 104 and to another protrusion assembly 104. In addition, it also provides the preconditions for the extension end 302 to slide between the first protrusion 1041 and the second protrusion 1042.

[0037] Furthermore, to facilitate the dispensing personnel in screwing the annular body 301, such as... Figure 3 As shown, the annular body 301 extends a predetermined distance beyond the opening of the annular hole 201 from the end opposite to the extension end 302, and the end of the annular body 301 opposite to the extension end 302 has a screw-in groove 3011. It should be noted that, in this embodiment, the screw-in groove 3011 is a slotted groove, allowing the applicator to insert a flathead screwdriver or similar tool into the screw-in groove 3011 and rotate the annular body 301.

[0038] Furthermore, in the embodiments of this application, such as Figure 2As shown, the glue injection channel 103 includes a spiral groove 1031, a connecting hole 1032, and a flow channel 1033. The spiral groove 1031 is located at one end of the fitting hole 102 near the assembly part 106. The flow channel 1033 is located on the side wall of the guide part 107. The connecting hole 1032 extends from the bottom wall of one end of the flow channel 1033 toward the central axis of the guide part 107 to the spiral groove 1031.

[0039] In addition, the noise reduction brush holder structure also includes a brush arm 401 and two power terminals 402, both of which are mounted on the assembly part 106.

[0040] In summary, the noise-reducing brush holder structure based on the embodiments of this application is explained, which provides advantages such as a buffer structure at the brush holder bearing, more uniform coating, and more reliable bearing installation.

[0041] It is worth mentioning that, in this embodiment, the noise-reducing brush holder structure is simple in structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the noise-reducing brush holder structure provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0042] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from these principles.

Claims

1. A noise-reducing brush holder structure, characterized in that: The noise reduction brush holder structure includes A brush holder body, one end of which has a through hole, a fitting hole, and a glue injection channel; one end of the fitting hole communicates with the through hole; one end of the glue injection channel extends to the sidewall of the fitting hole; the sidewall of the fitting hole has a plurality of protrusions arranged in a ring array; and A bearing is placed inside the fitting hole, and the sidewall of the bearing is in contact with the protrusion assembly. The sidewall of the bearing, the wall of the fitting hole, and the sidewall of the protrusion assembly together form a gelling cavity. One end face of the bearing has an annular hole, and the sidewall of the bearing has a plurality of waist-shaped holes. The annular hole connects to each of the waist-shaped holes, and the end of the waist-shaped hole opposite to the annular hole is connected to the gelling cavity. The adhesive liquid is poured into the gelling cavity from the adhesive injection channel and forms an adhesive structure after solidification. as well as An agitator includes an annular body with a plurality of extension ends at one end. The annular body is placed inside the annular hole, and each of the extension ends extends into the gelation cavity after passing through the corresponding waist-shaped hole. The end of the extension end extending into the gelation cavity is bent at a predetermined angle, and each of the extension ends slides along the corresponding waist-shaped hole when the annular body rotates.

2. The noise-reducing brush holder structure according to claim 1, characterized in that: The brush holder body includes an assembly part and a guide part. The guide part is located at one end of the assembly part and is fixedly connected to the assembly part. The through hole extends from the assembly part to the guide part. The guide part has a stepped hole with an opening at one end near the assembly part. The middle section of the stepped hole at the end away from the assembly part extends along the radial direction of the guide part and forms the fitting hole. The highest point of the protrusion assembly is flush with the hole wall of the stepped hole.

3. The noise-reducing brush holder structure according to claim 2, characterized in that: Each of the protrusions includes a first protrusion and a second protrusion, the first protrusion and the second protrusion being spaced apart by a predetermined distance in the axial direction of the guide portion, and the extension end being located between the first protrusion and the second protrusion.

4. The noise-reducing brush holder structure according to claim 3, characterized in that: The annular body extends a predetermined distance from the opening of the annular hole at one end opposite to the extension end, and the annular body at one end opposite to the extension end has a screwing groove.

5. The noise-reducing brush holder structure according to claim 4, characterized in that: The glue injection channel includes a spiral groove, a connecting hole, and a flow channel. The spiral groove is located at one end of the fitting hole near the assembly part, the flow channel is located on the side wall of the guide part, and the connecting hole extends from the bottom wall of one end of the flow channel toward the central axis of the guide part to the spiral groove.

6. The noise-reducing brush holder structure according to any one of claims 1-5, characterized in that: The connection between the annular hole and the waist-shaped hole is transitioned by an arc surface.

7. The noise-reducing brush holder structure according to claim 6, characterized in that: The noise reduction brush holder structure also includes a brush arm and two power terminals, both of which are mounted on the assembly part.

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