Automobile window lifting motor brush holder with limiting and anti-falling structure

Abstract

The utility model discloses a kind of automobile window lifting motor brush holder with limiting anti-drop structure, it is related to the technical field of automobile accessories, including outer frame and inner frame, the inner frame inside is provided with elastic electric connecting piece, the elastic electric connecting piece one end is fixedly installed with brush head, elastic adjusting assembly and anti-drop fixing assembly are set between the outer frame and inner frame;In the technical scheme provided by the utility model, reliable fixing is realized by setting anti-drop fixing assembly multidimensional cooperation, boss forms support limit to elastic electric connecting piece bottom, the interference fit of boss and clamping groove is transverse positioning to elastic electric connecting piece, limiting block further strengthens the installation stability of elastic electric connecting piece, the thread connection of fixed lug and fixed bolt then fasten inner frame with outer frame, under motor long-term vibration and car window frequent lifting working condition, effectively avoid that brush is loose or drop, improve the stability and security of brush holder operation.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a brush holder for a car window lift motor with a limiting and anti-detachment structure. Background Technology

[0002] In automotive window lift systems, the motor brush holder is a key component, and its performance directly affects the stability of the motor's operation.

[0003] The brushes in existing automotive window regulator motor brush holders are usually fixed by simple slots or springs. Under conditions of long-term motor operation and vibration, as well as frequent window raising and lowering, the brushes are prone to loosening or even falling off the brush holder. At the same time, when the brushes are worn, the elasticity of the brush head changes, and the contact pressure with the commutator changes, which leads to poor motor contact, affects the normal operation of the window raising and lowering function, and reduces the reliability and safety of the vehicle. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a car window lift motor brush holder with a limiting and anti-detachment structure. This solves the problem that in the prior art, the brushes of car window lift motor brush holders are usually fixed by simple slots or springs. Under the conditions of long-term motor operation and vibration and frequent window raising and lowering, the brushes are prone to loosening or even falling off the brush holder. At the same time, when the brushes are worn, the elasticity of the brush head of the motor brush changes, and the contact pressure with the commutator changes, which leads to poor motor contact, affects the normal operation of the window lifting function, and reduces the reliability and safety of car use.

[0005] In view of this, the present invention provides a car window lift motor brush holder with a limiting and anti-detachment structure, including an outer frame and an inner frame. An elastic electrical connecting piece is provided on the inner side of the inner frame, and an electric brush head is fixedly installed on one end of the elastic electrical connecting piece. An elastic adjustment component and an anti-detachment fixing component are provided between the outer frame and the inner frame. The anti-detachment fixing component includes a boss, a protrusion, a slot, a limiting block, a fixing ear, and a fixing bolt. The boss is fixedly connected to the inner side of the outer frame, the protrusion is fixedly connected to the inner side of the inner frame, the slot is opened on one side of the protrusion, the limiting block is fixedly connected to one end of the elastic electrical connecting piece, the fixing ear is fixedly connected to the inner side of the inner frame, and the fixing bolt is movably installed on one end of the fixing ear.

[0006] Optionally, the top surface of the boss abuts against the bottom surface of the protrusion, and the top surface of the boss abuts against the bottom surface of one end of the elastic electrical connector.

[0007] Optionally, the shape of the slot matches the shape of one end of the limiting block and the elastic electrical connector, and the limiting block and the elastic electrical connector are interference-fitted to the inside of the slot.

[0008] Optionally, one side surface of the fixing ear abuts against the inner end face of the outer frame.

[0009] Optionally, the outer frame has screw holes that match the fixing bolts, and one end of the fixing bolts is threaded into the screw holes in the outer frame.

[0010] Optionally, the elastic adjustment assembly includes a support block, an internal threaded hole, an adjusting screw, and a through hole. The support block is fixedly connected to the corner of the elastic electrical connection piece. The internal threaded hole is opened on the side of the inner frame near the fixing lug. The adjusting screw is movably installed inside the internal threaded hole. The through hole is opened on one side of the outer frame.

[0011] Optionally, the adjusting screw is threaded into the internal threaded hole, and one end of the adjusting screw abuts against one side surface of the support block.

[0012] Optionally, the diameter of the perforation matches the diameter of the internal threaded hole, and the perforation is located at one end of the internal threaded hole.

[0013] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages: 1. This utility model discloses a car window lift motor brush holder with a limiting and anti-detachment structure. It achieves reliable fixation through multi-dimensional cooperation of anti-detachment fixing components. Specifically, the boss provides support and limit to the bottom of the elastic electrical connector, the interference fit between the boss and the slot provides lateral positioning of the elastic electrical connector, the limiting block further enhances the installation stability of the elastic electrical connector, and the threaded connection between the fixing ear and the fixing bolt secures the inner frame and the outer frame. It restricts the displacement of the elastic electrical connector and the brush head in multiple directions, including longitudinal, lateral and vertical. Under the conditions of long-term motor vibration and frequent window lifting, it effectively prevents the brush from loosening or falling off, and improves the stability and safety of the brush holder operation.

[0014] 2. This utility model discloses a car window lift motor brush holder with a limiting and anti-detachment structure. The contact pressure is flexibly adjusted by setting an elastic adjustment component. Specifically, a support block is fixed at the corner of the elastic electrical connector. The adjusting screw moves axially through thread engagement with the internal threaded hole. Its end abuts against the support block, changing the thrust on the elastic electrical connector. When the brush head's contact pressure with the commutator changes due to wear, the pressure can be adjusted to a suitable range by rotating the adjusting screw. This ensures the brush head maintains stable contact with the commutator, preventing poor contact from affecting the window lift function, extending the brush holder's service life, and improving the reliability of the motor operation.

[0015] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of one side of the structure of this utility model; Figure 3 This is a diagram of the anti-detachment fixing component of this utility model; Figure 4 This is a schematic diagram of the structure of the elastic electrical connection piece of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Outer frame; 2. Inner frame; 3. Flexible electrical connector; 4. Brush head; 501. Boss; 502. Protrusion; 503. Slot; 504. Limiting block; 505. Fixing ear; 506. Fixing bolt; 601. Support block; 602. Internal threaded hole; 603. Adjusting screw; 604. Through hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0019] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a car window lift motor brush holder with a limiting and anti-detachment structure.

[0020] Example 1 For easier understanding, please refer to Figures 1 to 4 This utility model provides an embodiment of a car window lift motor brush holder with a limiting and anti-detachment structure, including an outer frame 1 and an inner frame 2. An elastic electrical connecting piece 3 is provided on the inner side of the inner frame 2. An electric brush head 4 is fixedly installed on one end of the elastic electrical connecting piece 3. An elastic adjustment component and an anti-detachment fixing component are provided between the outer frame 1 and the inner frame 2. The anti-detachment fixing component includes a boss 501, a protrusion 502, a slot 503, a limiting block 504, a fixing ear 505, and a fixing bolt 506. The boss 501 is fixedly connected to the inner side of the outer frame 1, the protrusion 502 is fixedly connected to the inner side of the inner frame 2, the slot 503 is formed on one side of the protrusion 502, the limiting block 504 is fixedly connected to one end of the elastic electrical connecting piece 3, the fixing ear 505 is fixedly connected to the inner side of the inner frame 2, and the fixing bolt 506 is movably installed on one end of the fixing ear 505. The top surface of the boss 501 abuts against... On the bottom surface of the protrusion 502, and the top surface of the protrusion 501 abuts against the bottom surface of one end of the elastic electrical connector 3, the shape of the slot 503 matches the shape of the limiting block 504 and one end of the elastic electrical connector 3. The limiting block 504 and the elastic electrical connector 3 are interference-fitted to the inside of the slot 503. One side surface of the fixing ear 505 abuts against the inner end face of the outer frame 1. The outer frame 1 has a screw hole that matches the fixing bolt 506, and one end of the fixing bolt 506 is threadedly connected to the screw hole in the outer frame 1.

[0021] It should be noted that the anti-detachment fixing component achieves layered positioning through multi-structure collaboration. The boss 501 is fixed to the inner side of the outer frame 1, and its top abuts against the bottom of the boss 502 and the bottom of one end of the elastic electrical connecting piece 3, forming a vertical support and limiting, preventing the elastic electrical connecting piece 3 from shifting downward due to vibration; the slot 503 on one side of the boss 502 forms a shape-matching interference connection with the end of the elastic electrical connecting piece 3 and the limiting block 504, achieving lateral positioning through mechanical engagement, preventing the elastic electrical connecting piece 3 from loosening in the horizontal direction; the fixing ear 505 is threadedly connected to the screw hole of the outer frame 1 through the fixing bolt 506, fastening the inner frame 2 and the outer frame 1 into a whole, further eliminating gaps from the assembly level, ensuring the positional stability of each component under long-term vibration conditions, and effectively solving the problem of easy detachment in traditional fixing methods.

[0022] Example 2 In some embodiments, such as Figure 2 , Figure 3 As shown, the elastic adjustment assembly includes a support block 601, an internal threaded hole 602, an adjusting screw 603, and a through hole 604. The support block 601 is fixedly connected to the corner of the elastic electrical connection piece 3. The internal threaded hole 602 is opened on the side of the inner frame 2 near the fixing ear 505. The adjusting screw 603 is movably installed inside the internal threaded hole 602. The through hole 604 is opened on one side of the outer frame 1. The adjusting screw 603 and the internal threaded hole 602 are threadedly engaged, and one end of the adjusting screw 603 abuts against one side surface of the support block 601. The diameter of the through hole 604 matches the diameter of the internal threaded hole 602, and the through hole 604 is located at one end of the internal threaded hole 602.

[0023] It should be noted that the elastic adjustment component achieves precise control of contact pressure through threaded transmission. The support block 601 is fixed at the corner of the elastic electrical connection piece 3. This position can evenly transmit the thrust of the adjusting screw 603 to the elastic electrical connection piece 3, avoiding deformation caused by localized stress. The adjusting screw 603 and the internal threaded hole 602 adopt a threaded engagement structure. By rotating the screw, precise axial movement can be achieved. The thrust generated when its end abuts against the support block 601 directly acts on the elastic electrical connection piece 3, changing the contact pressure between the brush head 4 and the commutator. The diameter of the through hole 604 on one side of the outer frame 1 matches that of the internal threaded hole 602, which facilitates the operation of the adjusting screw 603 by passing the through hole 604. The coaxial design of the through hole 604 and the internal threaded hole 602 ensures stable force on the screw during adjustment, avoiding skewing that affects the adjustment accuracy.

[0024] Working principle: When the car window lift motor brush holder is working, the elastic electrical connecting piece 3 contacts the motor commutator through the brush head 4 to conduct current and drive the window to lift. When the motor is running and the window is frequently raised and lowered, causing vibration, the anti-detachment fixing component ensures structural stability through multi-dimensional limiting: the vertical support of the boss 501, the lateral interference fit between the slot 503 and the limiting block 504, and the overall fastening of the fixing ear 505 and the fixing bolt 506, together limit the displacement of the elastic electrical connecting piece 3 and the brush head 4, preventing loosening or detachment. When the brush head 4 wears down due to long-term use, causing changes in the contact pressure with the commutator, it can be dynamically adjusted using the elastic adjustment component: by using a tool to rotate the adjusting screw 603 through the through hole 604 of the outer frame 1, the screw 603 is rotated and its engagement with the internal threaded hole 602 is used to achieve axial movement. The end of the adjusting screw 603 pushes against the support block 601, thereby changing the force state of the elastic electrical connecting piece 3, so that the brush head 4 always maintains the optimal contact pressure with the commutator, avoiding poor contact, ensuring the continuous and stable operation of the motor, and ensuring the reliability and safety of the window lifting function.

[0025] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A brush holder for a car window lift motor with a limiting and anti-detachment structure, characterized in that: It includes an outer frame (1) and an inner frame (2). An elastic electrical connecting piece (3) is provided on the inner side of the inner frame (2). An electric brush head (4) is fixedly installed on one end of the elastic electrical connecting piece (3). An elastic adjustment component and an anti-detachment fixing component are provided between the outer frame (1) and the inner frame (2). The anti-detachment fixing component includes a boss (501), a protrusion (502), a slot (503), a limiting block (504), a fixing ear (505), and a fixing bolt (506). The boss (501) is fixedly connected to the inner side of the outer frame (1), the protrusion (502) is fixedly connected to the inner side of the inner frame (2), the slot (503) is opened on one side of the protrusion (502), the limiting block (504) is fixedly connected to one end of the elastic electrical connecting piece (3), the fixing ear (505) is fixedly connected to the inner side of the inner frame (2), and the fixing bolt (506) is movably installed on one end of the fixing ear (505).

2. The car window lift motor brush holder with a limiting and anti-detachment structure according to claim 1, characterized in that: The top surface of the boss (501) abuts against the bottom surface of the protrusion (502), and the top surface of the boss (501) abuts against the bottom surface of one end of the elastic electrical connector (3).

3. The car window lift motor brush holder with a limiting and anti-detachment structure according to claim 1, characterized in that: The shape of the slot (503) matches the shape of one end of the limiting block (504) and the elastic electrical connector (3), and the limiting block (504) and the elastic electrical connector (3) are interference-fitted to the inside of the slot (503).

4. The car window lift motor brush holder with a limiting and anti-detachment structure according to claim 1, characterized in that: The surface of one side of the fixing ear (505) abuts against the inner end face of the outer frame (1).

5. A car window lift motor brush holder with a limiting and anti-detachment structure according to claim 1, wherein the outer frame (1) is provided with a screw hole that matches the fixing bolt (506), and one end of the fixing bolt (506) is threadedly connected to the screw hole provided in the outer frame (1).

6. A car window lift motor brush holder with a limiting and anti-detachment structure according to claim 1, characterized in that: The elastic adjustment assembly includes a support block (601), an internal threaded hole (602), an adjusting screw (603), and a through hole (604). The support block (601) is fixedly connected to the corner of the elastic electrical connector (3). The internal threaded hole (602) is opened on the side of the inner frame (2) near the fixing ear (505). The adjusting screw (603) is movably installed inside the internal threaded hole (602). The through hole (604) is opened on the side of the outer frame (1).

7. A car window lift motor brush holder with a limiting and anti-detachment structure according to claim 6, characterized in that: The adjusting screw (603) is threaded into the internal threaded hole (602), and one end of the adjusting screw (603) abuts against one side surface of the support block (601).

8. A car window lift motor brush holder with a limiting and anti-detachment structure according to claim 6, characterized in that: The diameter of the through hole (604) matches the diameter of the internal threaded hole (602), and the through hole (604) is located at one end of the internal threaded hole (602).

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