JPH0679673U - Rear wiper for vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a rear wiper for a vehicle, which enables a driver to automatically secure a field of view and improve safety without switching a driving state. [Structure] When the front wiper switch 21 is ON (S1) and it is determined that the gear is in the reverse position (S2), when the vehicle is in a low speed running state immediately after starting (S5, 6). ), The rear wiper motor 15
After continuously operating for several times, the rear wiper motor 15 is stopped (S7, 8). Further, as the vehicle speed increases, intermittent operation is performed with the driving interval shortened (S10, 11).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rear wiper that removes raindrops and the like adhering to the rear glass of a vehicle.

[0002]

[Prior art]

 The wiper removes rainwater that adheres to the glass on the front of the driver's seat when the vehicle travels in the rain. By the way, recently, in order to remove splashes adhering to the rear glass when the vehicle rolls up from the road surface during driving, many vehicles have a rear wiper provided on the rear glass.

The rear wiper is composed of a wiper motor, a link mechanism, a wiper arm, and a wiper blade, and the wiper motor is composed of a motor section and a control section for controlling the operating state (continuous operation, intermittent operation) of the rear wiper (actual opening 3). -121062 gazette etc.).

[0004]

[Problems to be solved by the device]

 Here, since the conventional rear wiper can perform continuous operation and intermittent operation, it is used in the following operating states. That is, when the vehicle starts, the rear wiper is operated to remove the raindrops adhering to the rear glass when the vehicle is stopped.However, when the vehicle is running at medium speed after the vehicle starts, the wiper blade is immediately wiped out, causing wear of the wiper blade and damage to the rear glass. Therefore, the wiper is stopped every time it is activated.

On the other hand, when the vehicle speed increases and the splashed wind of the vehicle adheres to the rear glass, the intermittent wiper cannot remove the splash and secure sufficient visibility, so switch to continuous operation. There is. That is, as described above, when the rear wiper is operated, the driver needs to perform a complicated operation to switch the driving state one by one, and thus there is a fear that the driver will not be fully utilized, and therefore safety cannot be sufficiently secured. There is a fear.

The present applicant has previously filed an application for operating the rear wiper when the vehicle moves backward (see Japanese Utility Model Laid-Open No. 61-122953). The present invention has been made in view of the above circumstances, and provides a rear wiper for a vehicle that can automatically secure a field of view and enhance safety without switching the driving state by a driver. With the goal.

[0007]

[Means for Solving the Problems]

 Therefore, in the present invention, in the rear wiper capable of performing the intermittent operation and the continuous operation in which the operation intervals can be set to at least two types, the operation detection means for detecting the operation of the front wiper and the vehicle speed for detecting the vehicle speed. When the detection means and the front wiper are operating, if the vehicle speed is less than or equal to the predetermined speed, continuous operation is performed at most several times, and if the vehicle speed is above the predetermined speed, the vehicle speed increases as the speed increases. The operation control means for controlling the operation of the rear wiper is provided so as to shorten the operation interval.

[0008]

[Action]

 In such a structure, when the operation detecting means detects the operation of the front wiper and the vehicle speed detecting means detects that the vehicle speed is equal to or lower than the predetermined speed, the rear wiper is continuously operated by the operation controlling means at most several times. Done. That is, if it is determined by detecting the operation of the front wiper that the wiper is in operation in rainy weather, for example, when the vehicle shifts from start to low speed running, the rear glass is stopped when the vehicle is stopped. The rear wiper is operated continuously several times to remove raindrops that have adhered to it, and then stopped to prevent the dry wipe condition.

Further, when the operation of the front wiper is detected by the operation detecting means and the vehicle speed becomes higher than the predetermined speed by the vehicle speed detecting means, the rear wiper operates at an operation interval as the vehicle speed increases by the operation control means. Is controlled to be short, and so-called intermittent operation is performed. That is, when the vehicle speed increases, the splashed wind of the own vehicle adheres to the rear glass, but since the amount of such adhesion increases as the vehicle speed increases, the operating interval of the intermittent wiper is shortened and the above-mentioned splashes frequently occur. Need to be removed to secure sufficient visibility.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Referring to FIG. 1, a vehicle rear wiper according to the present invention controls the operation of a front wiper motor 11 that drives a front wiper (not shown) and the operation of a rear wiper motor 15 that drives a rear wiper that removes raindrops and the like adhering to the rear glass (not shown). The control unit 1 is included. Then, the control unit 1 receives a front wiper operation signal from the front wiper switch 21 and a reverse gear detection sensor 23 for detecting whether or not the gear stage of the speed changer is in the reverse position in order to move the vehicle backward. The reverse signal and the vehicle speed signal of the vehicle from the vehicle speed sensor 25 are input.

Next, the control routine relating to the operation of the rear wiper motor 15 performed by the control unit 1 will be described with reference to the flowchart shown in FIG. The routine is executed at the same time when the ignition key is turned on. In step 1 (denoted as S1 in the figure; the same applies hereinafter), the front wiper operation signal from the front wiper switch 21 is read and it is determined whether or not the front wiper switch 21 is ON. If it is not turned on, the wiper is not in the activated state and the routine returns. On the other hand, if it is determined that the wiper is on, it is determined that the wiper is in operation in rainy weather or the like, and the process proceeds to step 2.

That is, the front wiper switch 21 functions as an operation detecting unit. In step 2, it is determined whether or not the gear is in the reverse position in order to move the vehicle backward by checking the presence or absence of the reverse signal from the reverse gear detection sensor 23, and if it is determined that the gear is in the reverse position. Proceeds to step 3. In step 3, a continuous operation signal is input to the rear wiper motor 15 to continuously operate the rear wiper to secure the field of view when retreating and enable safe driving.

On the other hand, if it is determined in step 2 that the gear is not in the reverse position, the process proceeds to step 4, the vehicle speed V of the vehicle is read from the vehicle speed sensor 25, and then the vehicle speed is determined in step 5. It is determined whether V is 0. When it is determined in step 5 that V = 0, it is determined that the vehicle is stopped, and the process directly returns. When it is determined that V ≠ 0, the process proceeds to step 6 and it is determined whether the vehicle speed V is equal to or lower than the first reference speed V ₁ . Here, the first reference speed V ₁ is a speed when the vehicle is traveling at a low speed immediately after starting, for example, 1 to 2 km / h.

That is, the vehicle speed sensor 25 functions as a vehicle speed detecting means. When it is determined in step 6 that V ≦ V _1, it is determined that the vehicle is in a low speed traveling state immediately after starting, and the process proceeds to step 7 where the rear wiper motor 15 is continuously operated several times, and then the step At 8, the rear wiper motor 15 is stopped. That is, in this case, a large amount of raindrops may be attached to the rear glass while the vehicle is stopped, and it is necessary to remove the large amount of attached raindrops immediately after starting to secure the rear view. Operate continuously for several times. By the way, since the vehicle is running at a low speed after starting, raindrops are unlikely to adhere to the rear glass.Therefore, in order to protect the wiper blade of the rear wiper, stop the rear wiper motor 15 and wipe it with the dry wiper. To prevent abrasion of the wiper blade and damage to the rear glass.

On the other hand, if it is determined in step 6 that the vehicle speed V is higher than the first reference speed V ₁ , the process proceeds to step 9 to check whether the vehicle speed V is equal to or lower than the second reference speed V _2. to decide. Here, the second reference speed V ₂ is a speed when the vehicle runs at a medium speed, which is, for example, 5 to 60 km / h. When it is determined in step 9 that V ₁ <V ≦ V _2, it is determined that the operation of the front wiper is detected and the vehicle speed V is equal to or higher than the first reference speed V _1. Therefore, assuming that there is a possibility that some splashes may adhere to the rear glass, the process proceeds to step 10 and the rear wiper motor 15 is operated for a relatively long operation interval to perform the intermittent operation of the rear wiper.

On the other hand, when it is determined in step 9 that V ₂ <V, the operation of the front wiper is detected, and the vehicle speed V becomes higher than the second reference speed V ₂ described above. Therefore, in this case, as the vehicle speed increases, a large amount of splashed wind of the vehicle will adhere to the rear glass, so proceed to step 11 and operate the rear wiper motor 15 at a relatively short operating interval. Then, the droplets are removed frequently.

That is, in the routine, the first reference speed V ₁ corresponds to a predetermined speed, and steps 9 to 11 serve to control the operation of the rear wiper so as to shorten the operation interval as the vehicle speed increases. Is played. Further, as described above, the function of the operation control means is performed by this routine.

[0018]

[Effect of device]

 As described above, in the present invention, in the rear wiper capable of performing the intermittent operation and the continuous operation in which the operation intervals can be set to at least two types, the operation detection means for detecting the operation of the front wiper and the vehicle speed are detected. When the vehicle speed is less than the predetermined speed while the front wiper is operating, the vehicle is continuously operated at most several times, and when the vehicle speed is higher than the predetermined speed, the vehicle speed is increased. Therefore, the operation of the rear wiper is controlled so that the operation interval of the rear wiper is shortened accordingly.Therefore, the operation of the rear wiper is automatically controlled without the driver having to switch the operating state. In this way, the visibility is secured and safety is ensured, the dry wipe by the rear wiper is prevented, and the wear of the wiper blade and the damage of the rear glass are prevented. There is a cormorant effect.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation according to the embodiment.

[Explanation of symbols]

 1 Control unit 15 Rear wiper motor 21 Front wiper switch 23 Reverse gear detection sensor 25 Vehicle speed sensor

Claims (1)

[Scope of utility model registration request] 1. In a rear wiper capable of performing intermittent operation and continuous operation in which at least two operation intervals can be set, an operation detecting means for detecting an operation of a front wiper and a vehicle speed detecting means for detecting a vehicle speed. When the vehicle speed is less than or equal to the predetermined speed while the front wiper is operating, continuous operation is performed at most several times, and when the vehicle speed is higher than or equal to the predetermined speed, the operation interval is increased as the vehicle speed increases. A rear wiper for a vehicle, which is provided with operation control means for controlling the operation of the rear wiper so as to shorten the rear wiper.