Brush arm and brush sheet assembly structure
By designing the brush arm brush assembly structure, and using the linkage mechanism between the main brush arm and the secondary brush arm, the adaptive scraping of the windshield wiper device on the narrow and long glass is realized, solving the problem of insufficient scraping in the field of view in the prior art, and optimizing the scraping trajectory to adapt to different areas.
Patent Information
- Application Number
- CN202422368049.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing windshield wiper devices are difficult to meet the brushing requirements of key field of view when the glass is narrow and the installation position is limited.
A brush arm brush piece assembly structure is designed, including a main brush arm component, a secondary brush arm component, a bracket component and a brush piece component. Through the linkage mechanism, the movement trajectory of the brush piece component is adapted to the shape of the windshield glass, and the angular swing of the main brush arm and the secondary brush arm is used to drive the support and brush piece to swing the angular swing to form a specific shape of scraping area.
Adaptive scraping in different scraping areas is realized, and the motion trajectory is optimized through three-dimensional design software to meet the scraping needs of key field of view areas.
Smart Images
Figure CN223200035U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a windshield wiper, in particular to a brush arm and brush piece assembly structure. Background Art
[0002] Common windshield wiper device wiping methods include parallel wiping method ( Figure 1 ) and fan-shaped scraping method ( Figure 2 However, given the narrow and long windshield and the limited installation location of the wiper device, the above two wiping methods are difficult to meet the requirements of the critical field of view. Utility Model Content
[0003] Purpose of the utility model: The utility model provides a brush arm and brush blade assembly structure to solve the technical problem that the existing technology is difficult to meet the requirements of scraping and brushing in key visual areas.
[0004] Technical solution:
[0005] Provided is a brush arm and brush blade assembly structure, comprising: a main brush arm component, an auxiliary brush arm component, a brush blade component and a bracket component;
[0006] The bottom end of the main brush arm component is installed in the middle below the key visual area, and can swing angularly with the main brush arm component installation position A as the center of the circle; the bracket component is connected to the main brush arm component to form a main rotation pair, and the connection position is recorded as B; the bracket component is connected to the auxiliary brush arm component to form an auxiliary rotation pair, and the connection position is recorded as C; the auxiliary brush arm component is divided from top to bottom into a parallel section, a transition section, and a connecting section. The parallel section is parallel to the main brush arm component, and the connecting section obliquely passes through the main brush arm component from below one side of the main brush arm component and is installed below the key visual area on the other side of the main brush arm component, and can swing angularly with the auxiliary brush arm component installation position B as the center of the circle; the connecting section is lower than the parallel section, and the transition section connects the connecting section and the parallel section; the brush blade component is connected to the bracket component to form a rotation pair, and the connection position is recorded as E;
[0007] The main brush arm component drives the bracket component to rotate with point A as the center of the circle, and the bracket component drives the auxiliary brush arm component to rotate with point D as the center of the circle. At the same time, due to the linkage effect of the main brush arm component and the auxiliary brush arm component, the bracket component and the brush blade component perform angular swing with point B as the center of the circle.
[0008] Furthermore, the main brush arm component is driven by the reducer to perform angular swing.
[0009] Furthermore, the bracket component forms a rotating pair consisting of a rotating shaft and an axis hole between the bushing and the main brush arm component;
[0010] Furthermore, the bracket component forms a rotating pair consisting of a rotating shaft and an axis hole between the bracket component and the auxiliary brush arm component through the joint bearing.
[0011] Furthermore, the brush piece component and the bracket component form a rotating pair consisting of a rotating shaft and an axis hole through the screw.
[0012] Furthermore, the scraping trajectory changes with the relative positions of the four points A, B, C, and D to adapt to different scraping areas.
[0013] The utility model has the following advantages:
[0014] 1. As the main brush arm and auxiliary brush arm swing angularly with points A and D as the centers, the movement trajectory of the wiper blade is neither a parallel wiping area nor a fan-shaped wiping area, but a wiping area with a specific shape based on the shape of the windshield.
[0015] 2. The scraping trajectory can be modified by changing the relative positions of points A, B, C, and D to adapt to different scraping areas. The optimal design solution can be quickly obtained using the motion simulation function of 3D design software. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of the scraping area using the traditional parallel scraping method.
[0017] Figure 2 Schematic diagram of the scraping area using the traditional fan-shaped scraping method.
[0018] Figure 3 This is a schematic diagram of the scraping area of the brush arm and brush blade assembly structure of the present invention.
[0019] Figures 4 to 6 It is a structural diagram of the present utility model.
[0020] Description of the numbers in the above drawings:
[0021] 1- Main brush arm component; 2- Auxiliary brush arm component; 3- Brush blade component; 4- Bracket component; 5- Bushing; 6- Nut; 7- Washer; 8- Joint bearing.
[0022] Figure 7 This is an example of the brushing area of the brush arm and brush blade assembly structure.
[0023] Figure 8 This is the second example of the brush arm and brush blade assembly structure scraping area.
[0024] Figure 9 This is the third example of the brush arm and brush blade assembly structure scraping area. DETAILED DESCRIPTION
[0025] like Figure 1 As shown, in the traditional parallel scraping method, the four points A, B, C, and D form a parallelogram, and the direction of the brush blade remains unchanged during the scraping process; in the special-shaped brush arm and brush blade assembly structure of the present invention, as shown Figure 3 、 Figure 4 、 Figure 5 As shown, by moving point D, the original parallelogram shape is changed. On this basis, due to the linkage effect of the main brush arm component and the auxiliary brush arm component, the bracket component and the brush blade component are angularly swung with point B as the center.
[0026] like Figure 4 、 Figure 5 As shown in the figure, the core structure of the present invention consists of a main brush arm, an auxiliary brush arm, a brush blade, and a bracket. The main brush arm swings angularly with point A as the center of the circle; the bracket and the main brush arm are connected by a revolute pair, with the connection position marked as B; the bracket and the auxiliary brush arm are connected by a revolute pair, with the connection position marked as C; the auxiliary brush arm swings angularly with point D as the center of the circle; the brush blade and the bracket are connected by a revolute pair, with the connection position marked as E.
[0027] The mechanical linkage of this utility model is mainly in the following four positions:
[0028] ⑴ A: If Figure 4 As shown, the main brush arm component is driven by the reducer to swing angularly.
[0029] ⑵ B: If Figure 6 As shown, the bracket component is connected to the main brush arm component through the bushing, which is a rotating pair consisting of a rotating shaft and an axis hole.
[0030] ⑶ C: If Figure 6 As shown, the bracket component is connected to the auxiliary brush arm through the joint bearing, which is a rotating pair consisting of a rotating shaft and an axis hole.
[0031] ⑷ D: If Figure 5 As shown, the bracket component drives the auxiliary brush arm component to swing angularly with D as the center.
[0032] When the windshield wiper device of the present invention is in operation, the motor converts the rotational motion of the motor output shaft into angular swing of the reducer output shaft through the reducer; the main brush arm installed on the reducer output shaft swings angularly accordingly, and drives the auxiliary brush arm to rotate; due to the linkage effect of the main brush arm component and the auxiliary brush arm component, the bracket component and the brush blade component swing angularly with point B as the center of the circle, thereby forming Figure 3 Wiping area shown.
[0033] By changing the relative positions of points A, B, C, and D, the scraping trajectory can be changed to adapt to different scraping areas. An example is shown in Table 1 below.
[0034] Table 1
[0035]
Claims
1. A brush arm and brush blade assembly structure, characterized in that: include: A main brush arm component (1), an auxiliary brush arm component (2), a brush sheet component (3) and a bracket component (4); The bottom end of the main brush arm component (1) is installed in the middle of the key visual field, and can swing angularly with the main brush arm component (1) installation position A as the center of the circle; the bracket component is connected to the main brush arm component to form a main rotation pair, and the connection position is recorded as B; the bracket component is connected to the auxiliary brush arm component to form an auxiliary rotation pair, and the connection position is recorded as C; the auxiliary brush arm component is divided from top to bottom into a parallel section, a transition section, and a connecting section, the parallel section is parallel to the main brush arm component (1), the connecting section obliquely passes through the main brush arm component (1) from the bottom of one side, and is installed at a position below the key visual field on the other side of the main brush arm component (1), and can swing angularly with the auxiliary brush arm component installation position B as the center of the circle; the connecting section is lower than the parallel section, and the transition section connects the connecting section and the parallel section; the brush piece component (3) is connected to the bracket component (4) to form a rotation pair, and the connection position is recorded as E; The main brush arm component drives the bracket component to rotate with point A as the center of the circle, and the bracket component drives the auxiliary brush arm component to rotate with point D as the center of the circle. At the same time, due to the linkage effect of the main brush arm component and the auxiliary brush arm component, the bracket component and the brush blade component perform angular swing with point B as the center of the circle.
2. The structure according to claim 1, characterized in that The main brush arm component is driven by the reducer to swing angularly.
3. The structure according to claim 1, characterized in that The bracket component forms a rotating pair consisting of a rotating shaft and an axis hole between the bracket component and the main brush arm component through the bushing.
4. The structure according to claim 1, characterized in that The bracket component and the auxiliary brush arm component form a rotating pair consisting of a rotating shaft and an axis hole through the joint bearing.
5. The structure according to claim 1, characterized in that The brush piece component is connected to the bracket component through a screw to form a rotating pair consisting of a rotating shaft and an axis hole.
6. The structure according to claim 1, characterized in that The scraping track changes with the relative positions of the four points A, B, C, and D to adapt to different scraping areas.