Noise-reducing brush holder structure

Abstract

The invention relates to the technical field of window lifting motor accessories, in particular to a noise reduction brush carrier structure which comprises a brush carrier body, a bearing and a stirring piece, the brush carrier body is provided with a through hole, an embedding hole and a glue injection channel, the embedding hole is communicated with the through hole and the glue injection channel, the side wall of the embedding hole is provided with a protrusion combination, and the bearing is arranged on the bearing. The bearing is arranged in the embedding hole, the side wall of the bearing and the protrusion are combined and attached to form a gelling cavity, the bearing is provided with an annular hole and a kidney-shaped hole, the rubber coating liquid is poured into the gelling cavity from the rubber injection channel and forms a rubber coating structure after being solidified, the stirring piece comprises an annular body, one end of the annular body is provided with an extending end, and the annular body is arranged in the annular hole. Each extension end penetrates through the corresponding kidney-shaped hole and then extends into the gelling cavity, one end of each extension end is bent by a preset angle, and when the annular body rotates, each extension end slides along the corresponding kidney-shaped hole, and the advantage that a buffer structure is arranged at the brush carrier bearing is achieved by arranging the rubber coating structure.

Description

Technical Field

[0001] The present application relates to the technical field of window motor accessories, and more specifically to a noise-reducing brush holder structure. Background Art

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

[0003] Patent document (CN221767775U) discloses a window motor including a brush holder. Figure 3 It is easy to see that one end of the brush holder assembly has a bearing mounting hole, in which a ball bearing is installed, and the driving shaft passes through the ball bearing. However, since there is no buffer structure at the bearing, the impact and vibration of the motor operation directly act on the bearing through the driving shaft, accelerating its wear, thereby causing abnormal vibration and greater noise of the motor.

[0004] Therefore, there is a need to provide a brush holder structure with a buffer structure at the brush holder bearing, more uniform rubber coating, and more secure bearing installation, which reduces noise. Summary of the invention

[0005] The main purpose of the present 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 is connected to the through hole, one end of the glue injection channel extends to the side wall of the fitting hole, the side wall of the fitting hole has a plurality of protrusion combinations arranged in a circular array, the bearing is placed in the fitting hole, and the side wall of the bearing is fitted with the protrusion combination, the side wall of the bearing, the hole wall of the fitting hole and the side wall of the protrusion combination jointly form a gelling chamber, one end surface of the bearing is provided with an annular hole, the side wall of the bearing has a plurality of waist-shaped holes, the annular hole is connected to each of the waist-shaped holes, and one end of the waist-shaped hole away from the annular hole is connected to The gelling chamber is connected, and the coating liquid is poured into the gelling chamber from the coating injection channel and forms a coating structure after solidification. The stirring member includes an annular body, one end of the annular body has a plurality of extension ends, the annular body is placed in the annular hole, and each of the extension ends extends into the gelling chamber after passing through the corresponding waist-shaped hole, and one end of the extension end extending into the gelling chamber is bent at a predetermined angle, and when the annular body rotates, each of the extension ends slides along the corresponding waist-shaped hole. By setting the coating structure, a buffer structure is provided at the brush holder bearing to extend the service life of the bearing. By setting the stirring member, one of its functions is to stir the coating liquid in the gelling chamber to make the coating liquid more uniform. Secondly, when the coating liquid solidifies to form the coating structure, the stirring member is engaged with the coating structure to make the bearing installation more secure.

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

[0007] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a noise-reducing brush holder structure, wherein the noise-reducing brush holder structure comprises: A brush holder body, wherein 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 is connected to the through hole, one end of the glue injection channel extends to the side wall of the fitting hole, and the side wall of the fitting hole has a plurality of protrusions arranged in a circular array; and A bearing, the bearing is placed in the fitting hole, and the side wall of the bearing is fitted with the protrusion combination, the side wall of the bearing, the hole wall of the fitting hole and the side wall of the protrusion combination together form a gelling cavity, one end surface of the bearing is provided with an annular hole, the side wall of the bearing has a plurality of waist-shaped holes, the annular hole is connected to each waist-shaped hole, and one end of the waist-shaped hole away from the annular hole is connected to the gelling cavity, and the encapsulation liquid is poured into the gelling cavity from the injection channel and forms an encapsulation structure after solidification; and A stirring member, the stirring member includes an annular body, one end of the annular body has a plurality of extension ends, the annular body is placed in the annular hole, and each of the extension ends extends into the gelling cavity after passing through the corresponding waist-shaped hole, one end of the extension end extending into the gelling cavity is bent at a predetermined angle, and when the annular body rotates, each of the extension ends slides along the corresponding waist-shaped hole.

[0008] In one or more embodiments of the present 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, and the guide portion has a stepped hole with an opening at one end close to the assembly portion, and the middle section of the stepped hole at one end away from the assembly portion extends along the radial direction of the guide portion to form the mating hole, and the highest point of the protrusion combination is flush with the hole wall of the stepped hole.

[0009] In one or more embodiments of the present application, each of the protrusion combinations includes a first protrusion and a second protrusion, the first protrusion and the second protrusion are separated by a predetermined distance in the axial direction of the guide portion, and the extension end is located between the first protrusion and the second protrusion.

[0010] In one or more embodiments of the present application, one end of the annular body away from the extension end extends out of the orifice of the annular hole by a predetermined distance, and one end of the annular body away from the extension end has a screw groove.

[0011] In one or more embodiments of the present application, the glue injection channel includes a spiral groove, a connecting hole and a flow groove, the spiral groove is located at one end of the fitting hole close to the assembly portion, the flow groove is located on the side wall of the guide portion, and the connecting hole extends from the bottom wall of one end of the flow groove toward the central axis direction of the guide portion to the spiral groove.

[0012] In one or more embodiments of the present application, the connection between the annular hole and the waist-shaped hole is transitioned by an arc surface.

[0013] In one or more embodiments of the present application, the noise reduction brush holder structure further includes a brush arm and two power terminals, and the brush arm and the power terminals are both mounted on the assembly portion.

[0014] In an embodiment of the present application, a 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 is connected to the through hole. One end of the glue injection channel extends to the side wall of the fitting hole. The side wall of the fitting hole has a protrusion combination. The bearing is placed in the fitting hole, and the side wall of the bearing fits the protrusion combination to form a gelling cavity together. The bearing has an annular hole, and the side wall of the bearing has a waist-shaped hole, and one end is connected to the gelling cavity. The glue-coating liquid is poured into the gelling cavity from the glue injection channel and forms a glue-coating structure after solidification. The agitator The component includes an annular body, one end of which has an extension end, the annular body is placed in the annular hole, and each extension end extends into the gelling cavity after passing through the waist-shaped hole, one end of the extension end is bent at a predetermined angle, and when the annular body rotates, each extension end slides along the corresponding waist-shaped hole. By setting the rubber coating structure, a buffer structure is provided at the brush holder bearing to extend the service life of the bearing. By setting the stirring piece, one of its functions is to stir the rubber coating liquid in the gelling cavity to make the rubber coating liquid more uniform. Secondly, when the rubber coating liquid solidifies to form the rubber coating structure, the stirring piece is embedded with the rubber coating structure to make the bearing installation more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which: Figure 1 The figure shows a result schematic diagram of a noise-reducing brush holder structure of the present application; Figure 2 The figure shows a cross-sectional view of the brush holder body guide portion; Figure 3 The figure shows the structural schematic diagram of the bearing; Figure 4 The figure shows a schematic diagram of the structure of the guide part at a certain angle. DETAILED DESCRIPTION

[0016] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0017] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0018] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. 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 likewise, 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 associated listed items.

[0019] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when 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.

[0020] Schematic diagram of noise reduction brush holder structure, 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.

[0021] Specifically, Figure 2 As 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 is connected to the through hole 101, one end of the glue injection channel 103 extends to the side wall of the fitting hole 102, and the side wall of the fitting hole 102 has a plurality of protrusion combinations 104 arranged in a circular array; in addition, the bearing 20 is placed in the fitting hole 102, and the side wall of the bearing 20 is fitted with the protrusion combination 104, the side wall of the bearing 20, the hole wall of the fitting hole 102 and the side wall of the protrusion combination 104 jointly form a gelling cavity 105, and the glue coating liquid is poured into the gelling cavity 105 from the glue injection channel 103 and forms a glue coating structure after solidification (not marked in the figure).

[0022] It should be noted that, by making the outer ring of the bearing 20 and the protrusion combination 104 arranged in a circular array interference fit and closing the embedding hole 102, the side wall of the bearing 20, the hole wall of the embedding hole 102 and the side wall of the protrusion combination 104 jointly form the gelling cavity 105. Subsequently, the encapsulation liquid is poured into the gelling cavity 105 from the injection channel 103. After the encapsulation liquid is cooled, the encapsulation structure that is tightly fitted with the bearing 20 is formed. When the impact and vibration of the motor operation act on the bearing 20 through the driving shaft, between the outer ring of the bearing 20 and the hole wall of the embedding hole 102, except for a small part where the outer wall of the bearing 20 is in direct contact with the protrusion combination 104, the rest of the outer ring of the bearing 20 is in contact with the encapsulation structure. The encapsulation structure plays a role of buffering and shock absorption, 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 providing a buffer structure at the brush holder bearing.

[0023] However, when the glue 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, it is easy for the glue coating liquid to fill and overflow on the side of the gelling cavity 105 close to the glue injection channel 103, while the side of the gelling cavity 105 far from the glue injection channel 103 has residual air and glue flowing in unevenly, which may easily lead to pores or gaps in the formed glue coating structure.

[0024] In view of this, in the embodiments of the present application, Figure 2 and Figure 3 As shown, an annular hole 201 is provided on one end surface of the bearing 20, and a plurality of waist-shaped holes 202 are provided on the side wall of the bearing 20. The annular hole 201 is connected to each of the waist-shaped holes 202, and the end of the waist-shaped hole 202 away from the annular hole 201 is connected to the gelling chamber 105. The noise-reducing brush holder structure also includes an agitator 30, and the agitator 30 includes an annular body 301, and 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 gelling chamber 105 after passing through the corresponding waist-shaped hole 202. One end of the extension end 302 extending into the gelling 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.

[0025] In addition, in order to facilitate the bending of the extension end 302 , the connection between the annular hole 201 and the waist-shaped hole 202 is transitioned with an arc surface, that is, the connection between the annular hole 201 and the waist-shaped hole 202 has a guiding arc surface 203 .

[0026] It should be noted that the orientation of the extension end 302 in the initial state is flush with the central axis direction of the annular body 301. The glue filling personnel insert the end of the annular body 301 with the extension end 302 into the annular hole 201, and the extension end 302 contacts the guiding arc surface 203. As the annular body 301 is further pressed downward, the extension end 302 is subjected to force and generates an arc along the guiding arc surface 203, and at a certain moment extends out of the waist-shaped hole 202. It should be supplemented that the hole length of the waist-shaped hole 202 is greater than the width of the extension end 302, so that the extension end 302 can slide along the waist-shaped hole 202. In addition, 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 pouring personnel bend the extension end 302 at a predetermined angle to form a hook shape. Subsequently, during the process of pouring the glue-coating liquid, the annular body 301 is rotated, and the multiple hook-shaped extension ends 302 are stirred in the gelling cavity 105, and the glue-coating liquid poured into the gelling cavity 105 is stirred to fill each area more evenly, effectively reducing the phenomenon of pores or gaps in the glue-coating structure formed after the glue-coating liquid solidifies. At the same time, when the glue-coating liquid solidifies, the glue-coating structure is embedded with the extension end 302 and penetrates into the waist-shaped hole 202, so that the bearing 20 and the glue-coating structure fit more closely, further improving the shock absorption ability while also making the bearing 20 more securely installed.

[0027] Obviously, compared with the prior art, one of the functions of the extension end 302 is to stir the encapsulation liquid so that the encapsulation liquid can more evenly fill the gelling cavity 105 , and another function of the extension end 302 is to prevent the bearing 20 from falling out of the fitting hole 102 .

[0028] Further, in the embodiments of the present application, Figure 1 As shown, the brush holder body 10 includes a mounting portion 106 and a guide portion 107. The guide portion 107 is located at one end of the mounting portion 106 and is fixedly connected to the mounting portion 106. The fixed connection method is not limited to welding. The through hole 101 extends from the mounting portion 106 to the guide portion 107. Figure 2 As shown, the end of the guide portion 107 close to the assembly portion 106 has a stepped hole 1071 with an opening, the middle section of the stepped hole 1071 at one end away from the assembly portion 106 extends along the radial direction of the guide portion 107 and forms the interlocking hole 102, and the highest point of the protrusion assembly 104 is flush with the hole wall of the stepped hole 1071.

[0029] More specifically, if Figure 2 and Figure 4As shown, each of the protrusion combinations 104 includes a first protrusion 1041 and a second protrusion 1042, the first protrusion 1041 and the second protrusion 1042 are spaced apart by a predetermined distance in the axial direction of the guide portion 107, and the extension end 302 is located between the first protrusion 1041 and the second protrusion 1042. By providing the first protrusion 1041 and the second protrusion 1042 arranged at intervals, it is helpful for the encapsulation liquid to cross a single protrusion combination 104 and flow to another protrusion combination 104, and in addition, it also provides a prerequisite for the extension end 302 to slide between the first protrusion 1041 and the second protrusion 1042.

[0030] Furthermore, in order to facilitate the glue filling personnel to screw the annular body 301, Figure 3 As shown, the end of the annular body 301 away from the extension end 302 extends out of the opening of the annular hole 201 by a predetermined distance, and the end of the annular body 301 away from the extension end 302 has a screw groove 3011. It should be noted that in the embodiment of the present application, the screw groove 3011 is a slot, and the glue filling personnel can insert a tool such as a slotted screwdriver into the screw groove 3011 and rotate the annular body 301.

[0031] Further, in the embodiments of the present application, Figure 2 As shown, the glue injection channel 103 includes a spiral groove 1031, a connecting hole 1032 and a flow groove 1033. The spiral groove 1031 is located at one end of the fitting hole 102 close to the assembly portion 106, the flow groove 1033 is located on the side wall of the guide portion 107, and the connecting hole 1032 extends from the bottom wall of one end of the flow groove 1033 toward the central axis direction of the guide portion 107 to the spiral groove 1031.

[0032] In addition, the noise-reducing brush holder structure further includes a brush arm 401 and two power terminals 402 , and both the brush arm 401 and the power terminals 402 are mounted on the assembly portion 106 .

[0033] In summary, the noise reduction brush holder structure based on the embodiment of the present application is explained, which provides the noise reduction brush holder structure with advantages such as a buffer structure at the brush holder bearing, more uniform rubber coating, and more secure bearing installation.

[0034] It is worth mentioning that in the embodiment of the present application, the noise reduction brush holder structure has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the noise reduction brush holder structure provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0035] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A noise-reducing brush holder structure, characterized in that: The noise-reducing brush holder structure includes A brush holder body, wherein 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 is connected to the through hole, one end of the glue injection channel extends to the side wall of the fitting hole, and the side wall of the fitting hole has a plurality of protrusions arranged in a circular array; and A bearing, the bearing is placed in the fitting hole, and the side wall of the bearing is fitted with the protrusion combination, the side wall of the bearing, the hole wall of the fitting hole and the side wall of the protrusion combination together form a gelling cavity, one end surface of the bearing is provided with an annular hole, the side wall of the bearing has a plurality of waist-shaped holes, the annular hole is connected to each waist-shaped hole, and one end of the waist-shaped hole away from the annular hole is connected to the gelling cavity, and the encapsulation liquid is poured into the gelling cavity from the injection channel and forms an encapsulation structure after solidification; as well as A stirring member, the stirring member includes an annular body, one end of the annular body has a plurality of extension ends, the annular body is placed in the annular hole, and each of the extension ends extends into the gelling cavity after passing through the corresponding waist-shaped hole, one end of the extension end extending into the gelling cavity is bent at a predetermined angle, and when the annular body rotates, each of the extension ends slides along the corresponding waist-shaped hole.

2. The noise-reducing brush holder structure according to claim 1, characterized in that: The brush holder body includes an assembly portion and a guide portion, wherein 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, and the guide portion has a stepped hole with an opening at one end close to the assembly portion, and the middle section of the stepped hole at one end away from the assembly portion extends along the radial direction of the guide portion to form the fitting hole, and the highest point of the protrusion combination 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 protrusion combinations includes a first protrusion and a second protrusion, the first protrusion and the second protrusion are spaced apart by a predetermined distance in the axial direction of the guide portion, and the extending end is located between the first protrusion and the second protrusion.

4. The noise-reducing brush holder structure according to claim 3, characterized in that: One end of the annular body away from the extending end extends out of the opening of the annular hole by a predetermined distance, and one end of the annular body away from the extending end has a screw 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 groove. The spiral groove is located at one end of the fitting hole close to the assembly part, the flow groove 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 groove toward the central axis direction of the guide part to the spiral groove.

6. The noise reduction brush holder structure according to any one of claims 1 to 5, characterized in that: The connecting part 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-reducing brush holder structure further includes a brush arm and two power terminals, and both the brush arm and the power terminals are mounted on the assembly portion.

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