JPS5889419A - Roof opening device for automobile - Google Patents

Abstract

PURPOSE:To reduce slopping noise and whistling sound at a deflector by placing the same under such a car-speed-based variable control that the deflector is raised high when the car runs at a low speed while raised low when the car runs at a high speed. CONSTITUTION:When a sliding roof 3 is slided backward to widen an opening 2, a deflector 4 is raised by a certain angle by the energizing force of a coil spring 6. If a car speed is below 80km/h, for example, an attraction solenoid 8 is kept unexcited because a car speed sensor 12 is maintained open, on account of which a rod 7b will not be attracted so that the deflector 4 maintains said certain angle. The slopping noise may be thus reduced. On the other hand, if the speed is increased over a certain value, the car speed sensor 12 is closed to excite the solenoid 8 in cooperation with a opening roof detection switch 11 being closed so that the solenoid attracts a rod 7b. The deflector 6 is thereby turned in the closing direction to stand at an intermediate angle, whereby the slopping noise and the whistling sound may be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roof opening device that opens and closes an opening formed in a roof panel of a vehicle, and in particular, the problem occurs when the vehicle is traveling with the opening opened.

This invention relates to an improvement in a device in which a deflector is provided at the front edge of the opening in order to reduce low-frequency pulsating noise (so-called slob noise) that uses the passenger compartment volume as a resonance box.

Conventionally, the deflector of this type of roof opening device is normally housed in the roof panel in a horizontal state, as disclosed in, for example, Japanese Utility Model Application Publication No. 51-132'714. When the roof is opened by sliding a sliding roof, etc., it automatically stands up at a predetermined angle of inclination and protrudes above the opening, and in this state, the slob noise is reduced. Since the standing angle of the deflector does not change and is limited to a fixed value set in advance at a predetermined angle, the sloping noise can be effectively reduced by the deflector set at a predetermined angle in low-speed driving ranges, but on the other hand, in high-speed driving ranges When entering the area, wind noise increases significantly due to the presence of the deflector erected at a predetermined angle, making it impossible to maintain a quiet state inside the single room.

In view of this, the present invention focuses on the fact that slop noise can be effectively reduced by increasing the upright angle of the deflector, and that slop noise becomes harsh in low speed ranges and wind noise becomes harsh in high speed ranges. By making the upright angle of the deflector as described above variable in accordance with the vehicle speed so that it increases when driving at low speeds and decreases when driving at high speeds, the deflector with a large upright angle in low speed driving ranges To provide a roof opening device for an automobile, which effectively reduces slob noise and also effectively suppresses increase in wind noise caused by the presence of a deflector using a deflector with a small upright angle in a high-speed driving range. It is.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

1 and 2 show a first embodiment in which the present invention is applied to a sliding roof device for an automobile, in which 1 is a roof panel, 2 is an opening formed in the roof panel 1,
A sliding roof 6 is provided in the opening 2 of the roof panel 1.
is disposed to be slidable in the longitudinal direction of the vehicle body, and the opening 2 is opened and closed by sliding the sliding roof 5 in the longitudinal direction of the vehicle body.

Further, reference numeral 4 denotes a deflector made of a flat plate arranged at the front edge of the opening 2, and the deflector 4 is rotated in the longitudinal direction of the vehicle body via a coil spring 6 on a bracket 5 fixed to the roof panel 1. freely and in front (second
Therefore, when the sliding roof 5 slides rearward to open the opening 2, the biasing force of the coil spring 6 causes the deflector 4 to move to the second position. It rotates counterclockwise in the figure to a predetermined inclination angle (for example, 7
0°) and is configured to protrude above the opening 2.

Further, one end of a rod 7b is rotatably connected to the lower end of the deflector 4 via a link 7a, and a suction solenoid 8 is disposed at the other end of the rod 7b. A battery 10 is connected to the excitation circuit 9 of the suction solenoid 8.
Then, the vehicle speed reaches a predetermined speed (for example, 80°C) in response to signals from the roof open detection switch 11, which closes when the opening 2 is in the open state, and a vehicle speed sensor (not shown) that detects the vehicle speed.
A vehicle speed sensor switch 12 is provided which closes when the vehicle speed exceeds a predetermined speed (for example, 80 Km/h). When the vehicle speed sensor switch 12 is opened, the suction solenoid 8 is de-energized, the deflector 4 is raised to a predetermined angle of inclination (for example, 70°) by the biasing force of the coil spring 6, and while the rising angle is increased, the deflector 4 is raised to a predetermined speed ( For example, in a high-speed driving range of 80 to ψ) or higher, the roof opening/closing detection switch 11 and the vehicle speed sensor switch 12 are closed, and the suction solenoid 8 is energized to attract the rod 7b. The upright angle of the deflector 4 is adjusted at the vehicle speed so that the deflector 4 is rotated clockwise in FIG. It is configured to change in response to.

Note that when the opening 2 is closed by sliding the sliding roof 3 forward, the roof open detection switch 1 is activated.
When the deflector 1 is open, the suction solenoid 8 is de-energized and the rod 7b is allowed to move freely, so that the deflector 4 can be positioned horizontally and stored below the sliding roof 3. Further, 15 is a reinforcement that reinforces the area around the opening 2 of the roof panel 1.

Next, to explain the operation of the above embodiment, when the sliding roof 3 is slid backward and the opening 2 is opened,
The deflector 4 in the horizontal state is urged counterclockwise in FIG.
protrude upwards.

When the vehicle starts traveling in this state, in a low-speed traveling region below a predetermined speed (for example, s o Km/h), the suction solenoid 8 is kept in the non-energized width due to the maintenance of the open state of the vehicle speed sensor switch 12. Since the deflector 7b is not sucked by the suction solenoid 8, the deflector 4 remains upright at a predetermined inclination angle (for example, 70°). Therefore, the deflector 4 having a large upright angle effectively reduces the slobbing noise, making it possible to keep the room quiet. Moreover, the wind noise generated by the presence of the deflector 4 is sufficiently small since the vehicle is in a low speed driving range.

On the other hand, in a high-speed driving range above a predetermined speed (for example, 80 Km/h), the vehicle speed sensor switch 12 is closed, and the suction solenoid 8 is closed by closing the vehicle speed sensor switch 12 and the roof open detection switch 11. Since the rod 7b is in an excited state, the rod 7b is attracted by the attraction solenoid 8, and the deflector 4 is accordingly activated by the coil spring 6.
It rotates clockwise in FIG. 2 against the urging force of , and its upright angle decreases from a predetermined inclination angle (for example, 70°) to an intermediate inclination angle (for example, 40°). Therefore, since the upright angle of the deflector 4 is small, the wind noise is suppressed to be as low as possible. Furthermore, since the deflector 4 stands at an intermediate inclination angle (for example, 40 degrees), sloping noise can also be reduced.

3 and 4 show a second embodiment in which the present invention is applied to a removable roof device. In the first embodiment, a signal from a vehicle speed sensor switch 12 (that is, a vehicle speed sensor (not shown)) ), the upright angle of the deflector 4 is changed based on the wind pressure corresponding to the vehicle speed.

That is, in FIGS. 3 and 4, a removable roof (not shown) is provided in the opening 2 formed in the roof panel 1.
A U-shaped arm member 14 is provided at the lower end of the deflector 4 disposed at the front edge of the opening 2.
is attached with its both ends embedded, and the center portion of the arm member 14 is formed by a locking piece portion 15a extending forward from the rear end portion of an L-shaped bracket 15 fixed to the roof panel 1. A spring 16 is rotatably engaged with the holding groove 151) and is interposed between the arm member 14 and a locking portion 150 formed on the bracket 15, so that the deflector 4 It is rotatably attached to the front edge and is biased to rotate counterclockwise in FIG. 3, and when the opening 2 is opened by removing the roof (not shown), the biasing force of the spring 16 The deflector 4 rotates counterclockwise in FIG. 3, is engaged with a first engagement step 17a (described later) of the bracket 15, and raised to a predetermined inclination angle (for example, 700 degrees).

The arm member 14 is always biased in the lateral direction (to the right in FIG. 4) by the spring 16, and a locking piece 15a side end of the bracket 15 is provided with a As shown in detail, a gentle slope 17 is formed having first and second locking step portions 17a117b that abut and lock the arm member 14, so that when traveling with the opening 2 open, a predetermined slope is formed. In a low speed range below speed (for example, 80 to ψ), the arm member 14 is connected to the spring 16.
The first locking step portion 17a on the inside of the gentle slope 17 is rotated counterclockwise in FIG.
By stably locking the deflector 4 at a predetermined angle of inclination (for example, 70°), the rising angle is increased, while at the same time
) In the above high-speed driving range, wind pressure corresponding to the vehicle speed acts on the deflector 4, and this wind pressure causes the arm member 1 to
4 against the biasing force of the spring 16 and stably locked at the second locking step 17b on the outside of the gentle slope 17, the rising angle is changed to an intermediate slope angle (for example, 40°).
It is configured to change the upright angle of the deflector 4 in response to the vehicle speed (wind pressure). Note that when the opening 2 is closed by attaching a roof (not shown), the roof (not shown) presses the arm member 14 downward against the biasing force of the spring 16. The bracket 15 is moved further outward on the gentle slope 17 to bring it into a horizontal state. Further, 18 is a reinforcement.

Therefore, in this embodiment, when the roof (not shown) is removed and the opening 2 is opened, the arm member 14 is in a horizontal state.
is biased by the biasing force of the spring 16 and rotates counterclockwise in FIG.
The deflector 4 stands up at a predetermined inclination angle (for example, 70°) by being stably supported by the inner first locking step portion 17a by moving laterally in contact with the gentle slope 17 of a.

When running in this state, in a low-speed running region below a predetermined speed (for example, 80 Km/h), the deflector 4 is still moved to the first engagement position inside the gentle slope 17 by the biasing force of the spring 16 because the wind pressure is small. Stop portion 17
It remains stably supported by a, and its upright angle is large.

On the other hand, in a high-speed driving region above a predetermined speed (for example, 80 Km/h), the wind pressure acting on the deflector 4 increases in proportion to the vehicle speed, so the deflector 4 is pushed backward by this wind pressure and moves clockwise in FIG. 3. Accordingly, the arm member 14 moves outward against the gentle slope 17 of the bracket 15 against the biasing force of the spring 16, and is stably supported by the outer second locking step portion 17b. Accordingly, the upright angle of the deflector 4 is reduced from a predetermined inclination angle (for example, 700°) to an intermediate inclination angle (for example, 40°).

Therefore, in addition to the first embodiment described above, the sloping noise can be effectively reduced by the deflector 4 having a large upright angle when driving at low speeds, and the wind noise generated by the presence of the deflector 4 can be reduced when driving at high speeds. This can be suppressed as much as possible by the angle deflector 4, and the interior of the vehicle can always be maintained in a quiet state.

In this embodiment, the upright angle of the deflector 4 is set to a predetermined inclination angle (for example, 70°) and an intermediate inclination angle (for example, 40°).
), but in addition, sloping noise can be reduced and Wind noise can be suppressed more effectively.

Next, let us consider the case where the upright angle of the deflector 4 is 70° and the case where the upright angle is 40°.
FIG. 6 shows the measurement results of the slob sound level and the wind noise level with respect to the vehicle speed in the case of 100°.

Figure 6 shows the slop sound level when the angle is 70° with the solid line marked with an X, the slob sound level when the angle is 40° with the broken line where the measurement point is marked with an The broken line with measurement points marked with ◯ indicates the wind noise level in the case of 400, and the solid line with measurement points with ◯ marks. 6th
As can be seen from the figure, in low-speed driving ranges where the vehicle speed is 80 km/h or less, setting the rising angle to 70° can reduce the slob sound level by about 10 dB compared to setting it to 40°. The increase in sound level is also not that large. In addition, in high-speed driving ranges where the vehicle speed is 80 km/h or more, if the standing angle is set to 40°, the
The slob sound level is reduced by 1 odB compared to when set to 0°.
4 nights, and the wind noise level can be suppressed by 1 odB or more.

As explained above, according to the automobile roof opening device of the present invention, the angle of upright angle of the deflector changes in accordance with the vehicle speed so that it becomes steeper when driving at low speeds and becomes smaller when driving at high speeds, so that sloping noise occurs when driving at low speeds. In addition to effectively reducing wind noise caused by the presence of the deflector during high-speed driving, the vehicle interior can be kept in a quiet state at all times.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIGS. 1 and 2 show a first embodiment. FIG. 1 is a perspective view of the overall schematic configuration, FIG. 2 is an enlarged longitudinal sectional view of the main part, and FIG. 5 to 5 show the second embodiment, FIG. 3 is a longitudinal sectional view, FIG. 4 is an enlarged perspective view of the main part, FIG. 5 is a plan view of the gently sloped part of the bracket, and FIG. FIG. 3 is a diagram showing measurement results of sound level and wind noise level. 1. Roof panel, 2. Opening, 4. Deflector, 6. Coil spring, 8. Suction lens, 1
2...Single sensor switch, 14...Arm member, 15
...Bracket, 15a-retaining piece, 15b...retaining groove, 15C...locking part, 16...spring, 17a...
First series stop step portion, 1711)...Second stop step portion. -15-

Claims (3)

[Claims] (1) A roof opening device for opening and closing an opening formed in a roof panel, in which a deflector that rises when the roof is opened is rotatably attached to the front edge of the opening,
The deflector has a large upright angle when driving at low speeds,
A roof opening device for an automobile, characterized in that the opening angle of the roof can be varied according to the vehicle speed so that the opening angle becomes smaller when driving at high speed. (2) The upright angle of the deflector changes based on a signal from a vehicle speed sensor that detects vehicle speed.
The automobile roof opening device according to item 1. (3) The automobile roof opening device according to claim 1, wherein the upright angle of the deflector changes based on wind pressure.