CN202847648U - Large motor vehicle non-blind area windscreen wiper - Google Patents

Abstract

A large-scale motor vehicle wiper device without blind spots, including a driving mechanism, a left wiper arm, a right wiper arm, a wiper blade on the left wiper arm and a right wiper arm, and the drive mechanism is simultaneously connected with the left wiper through a flexible rack. The starting gear of the wiper arm and the right wiper arm is matched; the characteristic is that the driving mechanism cooperates with the starting gear of the left wiper arm through a flexible rack. The gear of the arm is engaged; the end of the left wiper arm is hinged to the middle of the upper left wiper arm through the left connecting rod, and the top of the upper left wiper arm is hinged to the left top of the windshield; the end of the right wiper arm is connected to the middle of the upper right wiper arm through the right connecting rod Hinged, the top of the upper right wiper arm is hinged to the right top of the windshield; wiper blades are installed on the upper left wiper arm and the upper right wiper arm. This kind of wiper device scrapes rainwater and dust on the middle and lower parts and the middle and upper parts of the windshield, increases the scraping interval, expands the driver's field of vision, better ensures safe driving, and reduces safety hazards.

Description

A large motor vehicle without blind spot wiper device

technical field

The utility model relates to a windshield wiper, in particular to a windshield-free wiper device for a large motor vehicle.

Background technique

The wiper device is one of the most common important safety auxiliary accessories for motor vehicles, and it plays an extremely important role and significance for the driver's safe driving. Existing large-scale motor vehicles (such as large trucks, buses, large trucks, etc.) have a large windshield size, but the wiper device on it has a single structure, and only relies on the drive mechanism to drive two left and right swings that swing in the same direction. The wiper arm and the wiper blade on it realize rainwater and dust scraping. Its scraping can only be carried out within the range that the wiper arm can swing, and the large field of vision in the middle and upper part of the windshield cannot be scraped, so there is a problem of blind wiper. During the driving process, it directly affects the driver's field of vision and brings potential safety hazards.

Utility model content

The purpose of this utility model is to provide a wiper device without blind spots for large-scale motor vehicles. This wiper device can wipe rainwater and dust on the middle and lower parts and upper and middle parts of the windshield, increase the scraping interval, and expand the driver's The range of vision can better ensure the driver's safe driving and reduce potential safety hazards.

The technical solution adopted by the utility model to realize the purpose of the invention is that a large-scale motor vehicle has no blind spot wiper device, including a driving mechanism, a left wiper arm, a right wiper arm, and the left wiper arm and the right wiper arm. For the wiper blade, the driving mechanism cooperates with the starting gears of the left wiper arm and the right wiper arm through a flexible rack; the characteristics are:

The specific way for the drive mechanism to cooperate with the start gear of the left wiper arm through the flexible rack is: the flexible rack meshes with the drop gear, and the fall wheel meshes with the gear of the left wiper arm;

The end of the left wiper arm is hinged to the middle of the left upper wiper arm through the left connecting rod, and the top of the left upper wiper arm is hinged to the left top of the windshield; a wiper blade is installed on the left upper wiper arm;

The end of the right wiper arm is hinged to the middle part of the upper right wiper arm through the right connecting rod, and the top of the upper right wiper arm is hinged to the right top of the windshield; a wiper blade is installed on the upper right wiper arm.

Working principle and process of the present utility model are:

When the wiper device of the utility model is in the initial state, the left wiper arm and the right wiper arm are horizontally and symmetrically placed on the bottom of the windshield outward, and the ends are hinged to the upper left wiper arm and end of the left top of the windshield. The upper right wiper arm hinged at the right top of the windshield is vertically placed on the left and right sides of the windshield, so that the entire wiper device does not affect the driver's line of sight.

When it is necessary to wipe the rain or remove dust, start the drive mechanism; the drive mechanism drives the right wiper arm to rotate through the flexible rack and the gear at the beginning of the right wiper arm, and the drive mechanism drives the right wiper arm to rotate through the flexible rack, the fall wheel, and the gear at the beginning of the left wiper arm. The gear drives the left wiper arm to rotate. Because there is an extra pulley in the transmission system of the left wiper arm, the left wiper arm and the right wiper arm are not in the same direction, but rotate toward the center of the windshield in opposite directions.

When the left wiper arm and the right wiper arm rotate in opposite directions, they respectively drive the left upper wiper arm and the right upper wiper arm to rotate toward the center of the windshield through the left connecting rod and the right connecting rod; when the left wiper arm, right When the wiper arm rotates upward (middle) to reach the maximum arc, the driving mechanism rotates in the opposite direction, and the left wiper arm and the right wiper arm rotate oppositely to the outside of the windshield; the left connecting rod and the right connecting rod also respectively drive the upper left wiper The wiper arm and the upper right wiper arm rotate towards the outside of the windshield until the left wiper arm and the right wiper arm rotate downward to reach the maximum arc, and the rotation direction of the motor shaft is reversed again.

In this cycle, the left wiper arm and the right wiper arm swing back and forth in the middle and lower part of the windshield, and the left upper wiper arm and right upper wiper arm swing back and forth in the middle and upper part of the windshield. The windshield has no rain or dust in the blind area.

Compared with the prior art, the beneficial effects of the utility model are:

1. There is no blind area in scratching, and the scratching effect is good.

On the basis of the existing common wiper device, the wiper device of the present utility model adds the upper left wiper arm, the upper right wiper arm and its wiper blade, which can not only scrape the middle and lower parts of the windshield, but also Scrape rainwater and dust on the middle and upper part of the windshield; increase the scraping interval, solve the problem of blind scraping area of the existing wiper, expand the driver's field of vision, further ensure the driver's safe driving and reduce the safety Hidden danger. It is especially suitable for large vehicles with large windshields such as buses, buses, and large trucks.

2. Both the wiper arm and the wiper blade of the present invention are existing devices, and the four-wiper structure of the utility model can be combined by selecting different sizes of the wiper arm, wiper blade and connecting rod, and its structure is simple. It is easy to manufacture and convenient to implement.

3. The wiper device of the present invention adopts a hinged four-bar mechanism, and the top and bottom ends of the wiper arm group formed by the left (right) upper wiper arm and the left (right) wiper arm are fixed on the On the windshield, it is a two-point support. Compared with the existing single-point support wiper arm, the contact pressure between the wiper blade and the windshield is greater, the contact is more sufficient, the scraping is cleaner and more uniform, and the effect is better. Well, providing a clearer line of sight for driving.

Description of drawings

Fig. 1 is the front view of the utility model embodiment.

Detailed ways

Figure 1 shows that a specific embodiment of the present utility model is a large-scale motor vehicle without blind spot wiper device, including a drive mechanism 1, a left wiper arm 3A, a right wiper arm 3B, a left wiper arm 3A and For the wiper blade on the right wiper arm 3B, the driving mechanism 1 cooperates with the start gears of the left wiper arm 3A and the right wiper arm 3B through a flexible rack; it is characterized in that:

The specific way that the drive mechanism 1 cooperates with the start gear of the left wiper arm 3A through the flexible rack is: the flexible rack meshes with the drop gear 6, and the drop wheel 6 meshes with the gear of the left wiper arm 3A;

The end of the left wiper arm 3A is hinged to the middle part of the left upper wiper arm 5A through the left connecting rod 4A, and the top of the left upper wiper arm 5A is hinged to the left top of the windshield; a wiper blade is installed on the left upper wiper arm 5A ;

The end of the right wiper arm 3B is hinged to the middle of the upper right wiper arm 5B through the right connecting rod 4B, and the top of the upper right wiper arm 5B is hinged to the right top of the windshield; a wiper is installed on the upper right wiper arm 5B. piece.

Claims (1)

1. Large vehicle non-blind area Wiping device, comprise driver train (1), left wiper arm (3A), right wiper arm (3B), rain shaving blade on left wiper arm (3A) and the right wiper arm (3B), driver train (1) cooperates with the top gear of left wiper arm (3A), right wiper arm (3B) by flexible rack simultaneously; It is characterized in that:

Described driver train (1) by flexible rack with the concrete mode that the top gear of left wiper arm (3A) cooperates is: flexible rack and wheel (6) engagement of falling, the gear engagement of fall wheel (6) and left wiper arm (3A);

Described left wiper arm (3A) is terminal hinged with the middle part of upper left wiper arm (5A) by left connecting rod (4A), and the top of upper left wiper arm (5A) is articulated in the left top of Windshield; On the upper left wiper arm (5A) rain shaving blade is installed;

Described right wiper arm (3B) is terminal hinged with the middle part of upper right wiper arm (5B) by right connecting rod (4B), and the top of upper right wiper arm (5B) is articulated in the right top of Windshield; On the upper right wiper arm (5B) rain shaving blade is installed.

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