JPH0125373Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to, for example, a rotary switch type wiper switch for a vehicle.

[Conventional technology]

BACKGROUND ART Conventionally, a rotary switch type wiper switch for a vehicle is known, for example, one having four switch positions: OFF, INT, LOW, and HIGH.

However, in the vehicle wiper switch configured as described above, the four switch positions of OFF, INT, LOW, and HIGH are provided on the same knob, but the rotary volume for adjusting the intermittent operation varies the intermittent operation time. Therefore, it is provided with a separate knob.

[The problem that the idea aims to solve]

Since the conventional wiper switch for a vehicle is constructed as described above, another knob must be rotated in order to operate the wiper intermittently, which makes the operation cumbersome.

Furthermore, the mechanism of the vehicle wiper switch becomes complicated because it is equipped with two knobs.

This idea was made in view of the above-mentioned circumstances, and it improves operability by providing a rotary volume for intermittent operation adjustment on the same knob as the other switch positions, and also provides a vehicle wiper switch with a simple mechanism. The purpose is to provide the following.

[Means to solve the problem]

The vehicle wiper switch according to this invention is of a type different from conventional ones, and instead of using the conventional high mode (high speed) for the wiper speed, it does not use the low mode (low speed), and only changes the wiper intermittent time. This is to control the wiper drive.

In other words, the intermittent time set according to the volume output (output voltage) of the rotary volume is
The wiper drive is controlled by changing between the maximum time of the conventional INT operation and zero intermittent time (conventional high speed).

To achieve this purpose, a rotary switch is provided which is rotated relative to a fixed member by an operating knob;
It rotates together with the operation knob and controls the rotary switch.
Provided between the rotary volume that changes resistance etc. in the ON operation area, the operating knob and the fixed member,
A moderation mechanism is provided in which the sense of moderation between the OFF position and the intermittent operation start position is different from the sense of moderation between the intermittent operation start position and the intermittent operation end position.

[Effect]

The wiper switch for a vehicle according to this invention rotates a rotary switch and a rotary volume by rotating an operating knob, controls the intermittent time by the rotary volume, and controls the drive of the wiper.

When turning the operation knob in this way, the sense of moderation of the moderation mechanism is different between the OFF position and the intermittent operation start position and between the intermittent operation start position and the intermittent operation end position. This allows you to grasp the rotational position of the operating knob.

〔Example〕

An embodiment of this invention will be described below based on the drawings.

Figure 1 is a side view of the vehicle wiper switch, Figure 2 is a side view of the vehicle wiper switch.
3 is an enlarged plan view of a printed circuit board constituting the rotary switch; FIG. 4 is an explanatory diagram illustrating the state of contact between the printed circuit board constituting the rotary switch and the contact member; 5 is an enlarged plan view of the surface of the moderation plate on which the engagement recess is formed, and FIG. 6 is a partially enlarged sectional view of FIG. 5.

In FIGS. 1 to 6, A indicates a vehicle wiper switch, which is composed of an operating knob 1 and a fixing member 2 (not shown) fixed around the steering wheel. It is designed so that it can be rotated against.

The outer circumferential surface of the operation knob 1 is provided with letters and symbols indicating the OFF switch position (OFF position), as well as figures (not shown) indicating the switch position such as the end of intermittent operation, and the fixing member 2
An L-shaped symbol indicating the switch position is provided on the outer circumferential surface of the stem complete 4 (to be described later).

Therefore, the switch position is determined by rotating the operating knob 1 relative to the fixed member 2 and matching the symbol of the operating knob 1 with the symbol of the fixed member 2.

In addition, the fixing member 2 is a stem complete 4,
The pipe 3 is fixed at the center of the stem complete 4, and a cylindrical moderation plate with a bottom is fixed coaxially with the pipe 3 in a hollow part 4a formed at the end of the stem complete 4 on the operation knob 1 side. 5, and a stem complete 4 is fixed around the handle.

As shown in FIG. 3, the end of the pipe 3 on the operation knob 1 side passes through the side wall 1a of the operation knob 1 on the fixed member 2 (moderation plate 5) side and enters the hollow part 1b of the operation knob 1. is coming.

Reference numeral 7 indicates a printed circuit board having conductive patterns 7a and 7b formed on its surface, and is fixed to the pipe 3 facing into the hollow portion 1b of the operating knob 1.

Reference numeral 8 denotes an insulator, which is fixed together with a printed circuit board 7 to a pipe 3 facing into the hollow portion 1b of the operating knob 1.

Reference numeral 9 indicates a contact member, into which the pipe 3 is loosely inserted and arranged in the hollow part 1b of the operating knob 1.
A tongue piece (not shown) that engages with the side wall 1a of the operation knob 1 is provided, and as shown in FIG.
Contact points 9a and 9b are provided to contact the conductive patterns 7a and 7b, respectively.

10 is a recess 1c on the inner surface of the side wall 1a of the operation knob 1
The spring shown in FIG. 1 urges the contact member 9 toward the printed circuit board 7 to ensure that the contacts 9a and 9b come into contact with the conductive patterns 7a and 7b.

Reference numeral 11 denotes a rotary switch composed of a printed circuit board 7 and a contact member 9, which is rotated with respect to a fixed member 2 by an operation knob 1.

Note that when the rotary switch 11 is in the OFF switch position (OFF position), the contact 9a of the contact member 9 shown in FIGS. 3 and 4 contacts the conductive pattern 7a of the printed circuit board 7, but the contact 9b contacts the conductive pattern 7b and does not form a contact configuration.

When the rotary switch 11 is rotated to the switch position for starting intermittent operation (intermittent operation start position) by rotating the operation knob 1, the contacts 9a and 9b come into contact with the conductive patterns 7a and 7b. A contact configuration is formed, and the contact configuration is maintained within a range up to the switch position at which the intermittent operation ends (intermittent operation end position).

Reference numeral 14 indicates a rotary volume made of a variable resistor, which is disposed within the hollow portion 5a of the moderation plate 5 and fixed to the stem complete 4.

From the rotary volume 14, a volume output is obtained from a predetermined period of time to zero during an intermittent period in which the wiper motor is driven at high mode speed.

Reference numeral 15 designates a volume shaft of a rotary volume 14 that is rotatably inserted into the pipe 3, faces into a hole 5b formed in the center of the moderation plate 5, and is inserted into the outer surface of the side wall 1a of the operating knob 1 within the hole 5b. A protruding sleeve 1d is inserted and fixed, and rotated together with the operating knob 1.

The rotation range of the volume shaft 15 is
The rotary volume 14 is set in the entire range from the OFF switch position to the intermittent operation switch position, and the rotary volume 14 is set to 0 from the OFF switch position to the intermittent operation start switch position.
[Ω], and a volume output is obtained in which the resistance increases sequentially in the process from the switch position at the start of intermittent operation to the switch position at the end of intermittent operation.

17 indicates a spring, which is attached to the side wall 1 of the operation knob 1.
It is loaded into a recess 1e provided at a predetermined location on the outer surface facing the moderation plate 5 of a, and presses a moderation member 18 made of a steel ball against the surface of the moderation plate 5.

The surface of the moderation plate 5, on which the moderation member 18 is pressed by the spring 17, has a large number of engagement recesses 5c along the circumference centered at the center, with which the moderation member 18 is removably engaged. , a convex portion 5d is formed which the moderation member 18 rides over from the OFF switch position to the switch position where intermittent operation starts, and the operation knob 1 is rotated unnecessarily due to the engagement between the moderation member 18 and the engagement recess 5c. Regulate what you do.

The spacing between the engaging recesses 5c is as shown in FIG.
As shown in Fig. 6, a wide convex portion 5d is provided at one point corresponding to the area between the OFF switch position and the intermittent operation start switch position (first moderation section), and the intermittent operation Several points between the start switch position and the end switch position of the intermittent operation (the second moderation section located in the INT area in Figure 6) are set narrowly, giving different moderation sensations. .

Reference numeral 20 indicates a moderation mechanism (see FIG. 6) composed of a moderation plate 5 and a moderation member 18.

The configuration of the watch switch will be explained below.

Reference numeral 22 indicates a printed circuit board fixed in the hollow part 1b on the outer end side (left side in FIG. 2) of the operation knob 1, and when a rubber contact member 24, which will be described later, comes into close contact with the printed circuit board, a conductive layer (not shown) is formed. It is provided.

23 indicates a bushing knob provided in the hollow portion 1b of the operation knob 1 so as to be movable in the axial direction;
A rubber contact member 24 made of conductive rubber is provided on the surface of the printed circuit board 22 facing the bushing knob 23, and the bushing knob 23 is provided with a retainer (not shown) to prevent it from coming off from the hollow portion 1b, and the head is not operated. It is exposed on the outer end surface of the knob 1.

25 denotes a spring for restoring the bushing knob 23, which connects the printed circuit board 22 to the spring 2.
5 constitutes a watch switch.

Reference numeral 26 indicates a C-shaped retaining ring that engages with the pipe 3 to prevent it from coming off.

Next, the operation will be explained.

First, when setting the wiper in the stopped state to the INT operating state, the rotary switch 11 is turned OFF.
Therefore, in order to turn the rotary switch 11 ON by rotating the operating knob 1, it is necessary to rotate the operating knob 1 to the switch position where intermittent operation starts.

While the operating knob 1 is rotated to the switch position for starting intermittent operation in this way, the rotary switch 11 does not form a contact structure, so the wiper remains stopped. When the rotary switch 11 rotates toward the OFF position and forms the contact configuration, the rotary switch 11 enters the INT operating state and the wiper is driven.

At this time, the resistance of the rotary volume 14 is 0.
Ω, the wiper intermittent time (drive interval) is the maximum interval in the setting range.

Then, when the operation knob 1 is further rotated, the rotary switch 11 remains in the contact configuration.
Since the resistance of the rotary volume 14 increases sequentially from 0Ω, the wiper intermittent time gradually decreases and finally reaches zero, so that the wiper can be driven continuously at high speed from the high mode INT operating state with a long intermittent time.

Therefore, by rotating the operation knob 1, an arbitrary wiper intermittent time can be selected and the wiper motor can be driven in high mode, eliminating the need to set the wiper motor mode and simplifying the structure. .

When rotating the operating knob 1 in this way, the moderation member 18 first climbs over the convex portion 5d of the moderation plate 5, and
After that, the operation knob 1 will be engaged with the engagement recess 5c.
You can feel the moderation by the rotation of the .

The first moderation section of the moderation mechanism 20 extends from the OFF switch position that gives a feeling of moderation to the switch position that starts intermittent operation, and the first moderation section that extends from the switch position that starts intermittent operation to the switch position that ends intermittent operation. Since the spacing between the engagement recess 5c and the second moderation part of the moderation mechanism 20 is different, the feeling of moderation differs depending on the rotational position of the operating knob 1. The moving position can be grasped.

Furthermore, when the bushing knob 23 is pressed and the contact member 24 conducts the conductive layer of the printed circuit board 22, the pump of the washer tank (not shown) is activated and cleaning water is spouted from the nozzle.

Therefore, if the vehicle wiper switch A is operated as described above while the cleaning water is jetted onto the windshield, the windshield can be cleaned.

Although the circuit configuration of the above embodiment was not mentioned, when the operating knob 1 is rotated to drive the wiper motor, the wiper motor has an intermittent time according to the detected value of the volume output (output voltage) of the rotary volume 14. is driven by.

In order to easily distinguish between the OFF switch position and the INT switch position,
A separate switch circuit that rotates together with the operating knob 1 is provided, and the signal from this separate switch circuit
It is also possible to distinguish between the OFF switch position and the INT switch position.

[Effect of idea]

As described above, according to this invention, there is a rotary switch that is rotated relative to a fixed member by an operation knob, and a rotary volume that rotates together with the operation knob and changes the resistance etc. in the ON operation area of the rotary switch. and a moderation mechanism that is provided between the operating knob and the fixed member and has a different moderation feel between the OFF position and the intermittent operation start position and a moderation feeling between the intermittent operation start position and the intermittent operation end position. Since a switch position such as OFF and a switch position for intermittent operation can be installed on the same operation knob, the knobs can be combined into one, improving operability and simplifying the mechanism. become.

Furthermore, since the rotary switch, rotary volume, and moderation mechanism can be constructed separately, the degree of freedom in setting the contact point configuration and moderation is increased, and the design becomes easier.

Furthermore, there is an effect that the rotation position of the operation knob can be grasped by the sense of moderation when the operation knob is rotated.

[Brief explanation of the drawing]

Figure 1 is a side view of the vehicle wiper switch, Figure 2 is a side view of the vehicle wiper switch.
3 is an enlarged plan view of a printed circuit board constituting the rotary switch; FIG. 4 is an explanatory diagram illustrating the state of contact between the printed circuit board constituting the rotary switch and the contact member; 5 is an enlarged plan view of the surface of the moderation plate on which the engagement recess is formed, and FIG. 6 is a partially enlarged sectional view of FIG. 5. A... Vehicle wiper switch, 1... Operation knob, 2... Fixed member, 11... Rotary switch, 14... Rotary volume, 20... Moderation mechanism.

Claims (1)

[Claims for Utility Model Registration] A wiper switch for a vehicle, comprising: a rotary switch rotated relative to a fixed member by an operation knob; a rotary volume for adjusting intermittent wiper operation that rotates together with the operation knob; and the operation. a first moderation section provided between the knob and the fixed member and providing a sense of moderation between the off position and the intermittent operation start position; and a moderation section between the intermittent operation start position and the intermittent operation end position. a second moderation section that imparts a feeling, and a moderation mechanism in which the first moderation section and the second moderation section have different moderation sensations with respect to the operation knob; A wiper switch for a vehicle characterized by controlling the drive of the wiper by controlling the time.