Support seat for automobile wiper motor assembly

Abstract

The utility model discloses a support seat for automobile wiper motor assembly in the field of automobile manufacturing technology, including a mounting plate and a connecting plate, the support seat is mounted on the vehicle frame through the connecting plate, the automobile wiper motor assembly is mounted on the mounting plate, the plate surface of the connecting plate intersects with the plate surface of the mounting plate, a connecting bayonet is provided at one end of the connecting plate away from the mounting plate, and a crushing groove extending toward the upper edge of the connecting bayonet is provided on the upper side of the connecting plate, so that the bottom of the crushing groove forms a weak connection with the upper edge of the connecting bayonet. The utility model designs the connecting plate and the mounting plate into a cross structure, and then longitudinally connects the support seat with the vehicle frame connection point. When the mounting plate is subjected to longitudinal pressure, the crushing groove can be longitudinally broken, so that the wiper motor assembly loses the lateral upward support of the mounting point, rotates downward under the action of gravity, and breaks away from the rigid connection with the vehicle body, thereby avoiding further damage to pedestrians by the wiper output shaft and improving the pedestrian protection effect of the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a supporting seat for an automobile windshield wiper motor assembly. Background Art

[0002] According to statistics, an average of 63,000 people die in traffic accidents each year, and 230,000 people are injured. The proportion of pedestrians causing death and disability continues to increase, and the issue of pedestrian travel safety is becoming increasingly prominent. In collisions between pedestrians and vehicles, pedestrians are usually the weaker party, so protecting pedestrians has become an important part of safety development for major OEMs. In the 2018 version of C-NCAP, pedestrian protection is officially included in the evaluation indicators.

[0003] In the 2018 version of the C-NCAP pedestrian head protection rating method, pedestrians of different heights are simulated to divide the adult head area and the minor head area, and different head models and different angles are used in the corresponding areas to simulate collisions. According to the head injury value, the corresponding pedestrian protection head score is obtained. When pedestrians encounter a vehicle collision, the knees are often impacted first, and the lower limbs are forced to move quickly. The pedestrian flips over and hits the vehicle hood or glass. The wiper output shaft is an obvious hard protrusion on the front of the motor vehicle. It is made of a 6-14mm steel rod. When it collides quickly, it is no less than a steel needle, which poses a serious threat to the pedestrian's head. Because of this, the C-NCAP score rate near the wiper is relatively low.

[0004] In order to reduce the risk of the wiper output shaft, a groove-like crushing structure is generally provided on the support seat of the wiper assembly, such as Figure 1 , Figure 2 As shown, according to the test analysis, the crush structure may face the risk that when the crush groove 1 is subjected to external pressure, due to the unequal moments at different points and the structural problems of the die-casting itself, the support seat may not break and detach according to the reserved crush groove 1, and the inclined fracture may rest on the frame mounting fulcrum. Utility Model Content

[0005] In order to overcome the above-mentioned problems existing in the crushing structure of the existing wiper assembly support seat, the technical problem to be solved by the utility model is: to provide a new type of support seat for the automobile wiper motor assembly.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A support base for an automobile wiper motor assembly, the support base comprising a mounting plate and a connecting plate, the support base being mounted on a vehicle frame via the connecting plate, the automobile wiper motor assembly being mounted on the mounting plate, the plate surface of the connecting plate intersecting with the plate surface of the mounting plate, a connecting bayonet being provided at one end of the connecting plate away from the mounting plate, the entire support base being mounted on a longitudinal mounting surface of the vehicle frame via the connecting bayonet, the upper side edge of the connecting plate being provided with a crushing groove extending toward an upper edge of the connecting bayonet, so that a weak connection is formed between the bottom of the crushing groove and the upper edge of the connecting bayonet.

[0008] Furthermore, the size of the weak connection portion is such that the mounting plate breaks when subjected to a pressure exceeding 1500N.

[0009] Furthermore, the plate surface of the connecting plate and the longitudinal mounting surface of the vehicle frame are both parallel to the wiper output shaft mounted on the mounting plate.

[0010] Furthermore, the extension direction of the crush groove is also parallel to the wiper output shaft mounted on the mounting plate.

[0011] Furthermore, the mounting plate and the connecting plate are welded or integrally die-cast structures.

[0012] The beneficial effect of the utility model is as follows: by designing the connecting plate and the mounting plate into a cross structure, and then longitudinally connecting the support seat and the frame connection point, and setting the crushing groove on the upper side of the connecting plate, when the mounting plate is subjected to longitudinal pressure, the crushing groove can be longitudinally broken, and the wiper motor and the connecting rod mechanism assembly lose the lateral upward support of the mounting point, and rotate downward under the action of gravity, and separate from the rigid connection with the vehicle body, thereby avoiding further damage to pedestrians by the wiper output shaft and improving the pedestrian protection effect of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the existing support seat crushing structure;

[0014] Figure 2 It is a schematic diagram of the installation of the existing support seat;

[0015] Figure 3 It is a structural schematic diagram of the support seat of the utility model;

[0016] Figure 4 It is a schematic diagram of the installation of the support base of the utility model.

[0017] Marked in the figure, 1-mounting plate, 2-connecting plate, 3-vehicle frame, 4-wiper output shaft, 21-connecting bayonet, 22-crush groove, 23-weak connection part. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front, and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not for the absolute position of the related components or the position relationship between components. They are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "multiple", "multiple", "several", etc., they specifically refer to two or more.

[0020] like Figure 1 , Figure 2 As shown, the mounting plate 1 and the connecting plate 2 of the existing wiper motor assembly support seat are parallel to each other, and the crush groove 22 is set on the plate surface of the connecting plate. When the support seat is installed on the frame 3, the crush groove 22 is located on the side facing the inside of the vehicle. When the wiper output shaft 4 is subjected to a downward force, the mounting plate 1 is subjected to a downward torque. According to the design, the mounting plate 1 should bend or break along the crush groove 22 to play a buffering role. However, the actual situation is that due to the long length of the crush groove 22, the force applied to the mounting plate 1 is not completely perpendicular to the mounting plate 1, and the force along the length direction of the crush groove 22 is uneven. Therefore, the mounting plate 1 may not necessarily break and detach according to the reserved crush groove 1, and the inclined fracture may also rest on the frame mounting fulcrum, thereby failing to play a sufficient buffering role.

[0021] The improved scheme of the utility model is as follows Figure 3 , Figure 4As shown, the support seat includes a mounting plate 1 and a connecting plate 2, the support seat is installed on the vehicle frame 3 through the connecting plate 2, the automobile wiper motor assembly is installed on the mounting plate 1, the plate surface of the connecting plate 2 intersects with the plate surface of the mounting plate 1, and the end of the connecting plate 2 away from the mounting plate 1 is provided with a connecting bayonet 21, and the entire support seat is installed on the longitudinal mounting surface of the vehicle frame 3 through the connecting bayonet 21, and the upper side of the connecting plate 2 is provided with a crushing groove 22 extending to the upper edge of the connecting bayonet 21, so that the bottom of the crushing groove 22 and the upper edge of the connecting bayonet 21 form a weak connection 23. The plate surface of the connecting plate 2 intersects with the plate surface of the mounting plate 1, which means that the two are not parallel and can intersect at any angle, which is specifically related to the structure of the vehicle frame 3 and the wiper assembly. The mounting plate 1 and the connecting plate 2 can adopt a structural form of two steel plates welded together, or an integral die-casting structure. The purpose of this setting is to facilitate the setting of the crushing groove 22 on the side of the connecting plate 2, so that the width of the crushing groove 22 can be reduced, making the crushing structure easier to break. In addition, since the connecting plate 2 is installed on the frame 3 through the connecting bayonet 21 with an opening on one side, and the crushing groove 22 is located on the upper side of the connecting plate 2 after installation, when the weak connection part 23 is broken, the upper half of the entire connecting bayonet 21 becomes an open structure, and the mounting plate 1 and the connecting plate 2 will be completely separated from the frame under the action of gravity and will not be overlapped on the frame 3.

[0022] In order to ensure that the crushing groove 22 can play an effective buffering role, the size of the weak connection part 23 needs to be designed to meet the requirement of breaking when the mounting plate 1 is subjected to a pressure exceeding 1500N.

[0023] When designing the support seat, the structure of the wiper motor assembly and the structure of the frame need to be considered comprehensively, because the angles of the front windshields of different models are different, and the wiper output shaft 4 is generally perpendicular to the front windshield. Therefore, in order to make the pressure on the wiper motor assembly better act on the weak connection part 23, the plate surface of the connecting plate 2 and the longitudinal mounting surface of the frame 3 can be designed to be parallel to the wiper output shaft 4 installed on the mounting plate 1. Furthermore, the extension direction of the crushing groove 22 is preferably also parallel to the wiper output shaft 4 installed on the mounting plate 1, so that the weak connection part 23 is better broken along the crushing groove 22.

[0024] To sum up, the utility model designs the connecting plate 2 and the mounting plate 1 to be a cross structure, and then longitudinally connects the support seat and the connection point of the frame 3, and sets the crushing groove 21 on the upper side of the connecting plate 2. In this way, when the mounting plate 1 is subjected to longitudinal pressure, the crushing groove 21 can be longitudinally broken, and the wiper motor and the connecting rod mechanism assembly lose the upward support of the side of the mounting point, rotate downward under the action of gravity, and separate from the rigid connection with the vehicle body, thereby avoiding further damage to pedestrians by the wiper output shaft, improving the pedestrian protection effect of the vehicle, and having good practicality and application value.

Claims

1. A support base for an automobile wiper motor assembly, the support base comprising a mounting plate (1) and a connecting plate (2), the support base being mounted on a vehicle frame (3) via the connecting plate (2), the automobile wiper motor assembly being mounted on the mounting plate (1), characterized in that: The plate surface of the connecting plate (2) intersects with the plate surface of the mounting plate (1); a connecting bayonet (21) is provided at one end of the connecting plate (2) away from the mounting plate (1); the entire support seat is mounted on the longitudinal mounting surface of the vehicle frame (3) via the connecting bayonet (21); the upper side edge of the connecting plate (2) is provided with a crushing groove (22) extending toward the upper edge of the connecting bayonet (21), so that the bottom of the crushing groove (22) and the upper edge of the connecting bayonet (21) form a weak connection portion (23).

2. The support base for an automobile wiper motor assembly according to claim 1, characterized in that: The size of the weak connection part (23) is such that the mounting plate (1) breaks when subjected to a pressure exceeding 1500N.

3. The support base for the automobile wiper motor assembly according to claim 1, characterized in that: The plate surface of the connecting plate (2) and the longitudinal mounting surface of the vehicle frame (3) are both parallel to the wiper output shaft (4) mounted on the mounting plate (1).

4. The support base for the automobile wiper motor assembly according to claim 3, characterized in that: The extension direction of the crushing groove (22) is also parallel to the wiper output shaft (4) mounted on the mounting plate (1).

5. The support base for an automobile wiper motor assembly according to any one of claims 1 to 4, characterized in that: The mounting plate (1) and the connecting plate (2) are welded or integrally die-cast structures.

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