JPS62178453A - Drip molding - Google Patents

Abstract

PURPOSE:To prevent rain water from flowing down as well as to prevent wind whiz from occurring in a drip molding installed along a drip rail by providing a flap which sets the dericking motion accompanied with the coming in and out of fluid. CONSTITUTION:When a car is running in the rain, if fluid is introduced into a cavity 16, the cavity 6 expands for making a flap 13 rise. Consequently, a groove 9 is formed between the flap 13 and a roof panel 8 for gethering running rain water into the groove 9 so as to prevent it from flowing down to a side window. On the other hand, when the car is running in an usual condition, particularly at high speed, if the fluid in the cavity 16 is discharged out, the cavity 16 contracts for causing the flap 13 to lie down so as to strike it into contact with a roof panel 8. Accordingly, as a smooth surface is formed, air turbulence is prevented for preventing wind whiz from occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drip molding that is attached along a drip rail formed on the side of a vehicle roof.

[Conventional technology]

Fig. 12 is a perspective view of the vehicle, in which 1 is the vehicle body, 2 is a window glass (windshield glass), 3 is a side window (door glass), 4 is a window molding, 5 is a drip molding, and 6 is a roof molding. .

13 and 14 are sectional views taken along the line AA in FIG. 12, showing conventional drip molding.

FIG. 13 shows a sedan type, and the molding 5 has a protrusion made of soft synthetic resin extending from the molding main body 5a made of hard synthetic resin, which is attached to cover the drip rail 7 formed on the side of the roof, to the side of the roof panel 8. 5b protrudes and forms a groove 9 between it and the roof panel 8. 5c is a core material, and 10 is a side roof rail. FIG. 14 shows a hard top type, in which the molding 5 is attached to the weather strip retainer LOa so as to cover the drip rail 7.
Molding body 5 of the metal plate molding layer attached to
a, and a cushioning material 5d.

In the drip molding described above, water droplets adhering to the roof panel 8 when driving in the rain are collected by the Fi 49 and flow down, so that they are prevented from flowing over the drip molding 5 and flowing down to the side window 3 and blocking the view of the sight window 3. Ru.

[Problem that the invention seeks to solve]

However, in such conventional drip molding, the molding body 5a or the protrusion 5b
Since there is always a space between the roof panel 8 and the roof panel 8, it is possible to prevent rainwater from flowing down, but when driving when it is not raining, especially when driving at high speed under clear skies, air turbulence may occur in this space. There were problems such as easy wind noise and loss of decorativeness.

This invention is intended to solve the above problems.It prevents rainwater from flowing down during rainy days, and also prevents air turbulence and wind noise during normal driving, especially when driving at high speeds. The purpose of this invention is to provide a drip molding with excellent decorative properties.

[Means for solving problems]

This invention relates to a drip molding that is installed along a drip rail formed on the side of a vehicle roof, which includes a molding body that is attached to the drip rail or the side of the vehicle body, and a molding body that protrudes from the molding body so as to be able to rise and fall toward the roof panel. This drip molding includes a flap that forms a groove and a cavity that is airtightly formed inside the flap and expands and contracts as fluid enters and exits, causing the flap to rise and fall.

[For production]

The drip molding of the present invention is attached to the drip rail or the side of the vehicle body along the drip rail and with the flap protruding toward the roof panel. When fluid is introduced into the cavity when driving in the rain, the cavity expands and causes the flap to stand up. This forms a groove between the flap and the roof panel, and rainwater is collected in this groove and flows down. , preventing it from flowing down to the side window. When the fluid in the cavity is drained during normal driving, especially when driving at high speeds, the cavity shrinks and the flaps lie down and their tips touch the roof panel, creating a smooth surface that allows the air to flow turbulently. is prevented, wind noise is prevented, and an excellent appearance is maintained.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings. Figures 1 and 2 are sectional views taken along the line A-A in Figure 12 showing an embodiment of the present invention applied to a sedan, Figure 3 is a partially enlarged view of Figure 2, and Figure 4 is a system diagram. The same reference numerals as in FIGS. 12 to 14 indicate the same or corresponding parts.

The molding 5 includes a resin part 1 made of soft synthetic resin fixed to one end of the molding body 5a made of hard synthetic resin.
The flap 13 has a flap 13 that protrudes undulatingly from the base 11a of the roof panel 1 to the roof panel 8 side via the constriction 12, and forms a groove 9 between the flap 13 and the roof panel 8. A tube 15 is inserted into a cavity 14 formed inside the flap 13, and an airtight cavity 16 is formed inside the tube 15.

The molding body 5a is a long material extruded from hard synthetic resin, and elastic locking clip portions 17 and 18 are formed in the internal space of the molding body 5a, and these locking clip portions 17 and 18 are connected to the drip rail 7. The molding body 5a is attached to the drip rail 7 by elastically engaging with a locking portion 19 formed on the side of the molding body 5a.

Further, the molding body 5a may be formed by bending a metal plate such as a stainless steel plate, an aluminum plate, or an iron plate into a predetermined cross-sectional shape.

The resin portion 11 and the flap 13 are molded from flexible and elastic rubber or soft synthetic resin, and are provided along the entire length of the molding body 5a. The material of the flap 13 may be any material as long as it has rubber-like flexibility and elasticity.

For example, Mitsubishi Monsando Kasei Co., Ltd.'s vinyl chloride resin "
In addition to "Sunplain" or "Sumiflex" (both trademarks) of Sumitomo Bakelite Co., Ltd., well-known polyolefin resins can be mentioned. Resin part 11
When the cross-sectional shapes of the molding body 5a, resin portion 11, flap 13, etc. are constant, the flap 13 may be integrally molded with the molding body 5a by composite extrusion molding in synchronization with the extrusion molding or bending molding of the molding body 5a. or when the cross-sectional shape is not constant, the molding body 5a is injection molded or press molded, and the resin part 11 and the flap 1-
3 can be separately injection molded, and each can be fixed and integrated with an adhesive or the like. When the width of the flap 13 is large, a core material 22 such as stainless steel foil may be embedded.

The empty chamber 14 is formed continuously in the longitudinal direction from the base 1.1a of the resin part 11, the bottom part 20, and the regulating part 21 in a bag shape. The bottom part 20 forming the empty room 14 is a roof panel 8
is in close contact with the surface of The width of the regulating portion 21 is the width of the flap 1.
In order to prevent the roof panel 3 from opening excessively due to wind pressure or the like received while driving, it is preferable that the roof panel 3 is set to have its maximum dimension when it is approximately parallel to the surface of the roof panel 8 when standing up.

Further, the regulating portion 21 has flexibility, and the constriction portion 12 is
Depending on the region where it is used, the surface of the flap 13 and the regulating portion 21 on the groove 9 side may be coated with a thin film of polytetrafluoroethylene resin, etc., to prevent them from sticking due to freezing during the cold season. It is desirable to form a water repellent treatment M323.

The tube 15 is formed from a material that is flexible and stretchable over almost its entire length, and one longitudinal end of the tube 15 is sealed with a sealing part 24, and the other end is open and serves as a guide tube connected to a fluid supply source. 25 are connected. The tube IS is fixed to the flap 13 and the bottom part 20 by the fixing part 26, and both sides of the tube IS are free.

One end of the guide tube 25 is connected to an exhaust pipe system 29 from the vehicle engine via a pressure booster 27 and a switching valve 28. A suction pipe 30 and a discharge pipe 31 are connected to the switching valve 28, with the suction pipe 30 facing the exhaust gas inlet side and the discharge pipe 31 facing the exhaust gas outlet side. The pressure intensifier 27 has a large piston 34 and a small piston 35 in a large cylinder 32 connected to the switching valve 28 and a small cylinder 33 connected thereto. The guide tube 25 is configured to be selectively connected to the suction pipe 30 or the discharge pipe 31 by a switching valve 28 via a pressure intensifier 27 .

In FIG. 4, one end of the tube 15 is shown shorter than the flap 13, but this changes depending on the shape of the molding 5 and the roof panel 8, and the one end of the tube 15 is set to protrude longer than the flap 13. There is also.

Next, the effect will be explained. Under normal conditions, the tube 15 of the molding 5 is contracted and the tip of the flap 13 is in a down position, as shown in FIG. 1, in contact with the surface of the roof panel 8. When it starts to rain and the driver turns on the wiper drive switch (or when the wiper drive switch is turned on by an automatic raindrop detection sensor (not shown) installed on the car body), the wiper drive switch drive signal and electrical The switching valve 28 connected to is operated to connect the guide tube 25 to the suction pipe 30 side. Since the suction pipe 30 has its tip facing toward the exhaust gas inlet side, the suction pipe 30 is preloaded (positive pressure) and pushes the large piston 34 of the pressure intensifier 27 toward the small piston 35 side. The fluid therein is placed under a relatively high pressure and is forced into the tube 15 through the guide tube 25.

This injected fluid causes the tube 15 to expand and the cavity 16 to expand, and as a result, the flaps 13 are
4. Stand up as shown in Figure 4. In this state, the water dripping is indicated by the arrow
The rainwater is collected in the groove 9 and flows down in the direction of the rainwater, thereby preventing rainwater from flowing down to the side window 3.

When the rain stops, the wiper drive switch is turned OFF, the switching valve 28 electrically connected to the switch OFF signal is switched to the opposite side, and the guide tube 25 is turned off.
and the discharge pipe 31 are connected. Since the distal end of the exhaust pipe 31 is provided toward the exhaust gas outlet side, negative pressure is generated within the exhaust pipe 31 and acts to pull the large piston 34 of the pressure intensifier 27. piston 35
moves toward the large piston 34 side, the fluid in the small cylinder 33 is pulled back, the fluid in the tube 15 is pulled back through the guide tube 25, and along with this, the fluid in the tube 15 is pulled back.
shrinks.

In this state, due to the restoring force of the flap 13 itself, the flap 1
3 faces down toward the surface of the roof panel 8, and flap 1
3 comes into contact with the surface of the roof panel 8 again, restoring it to its original state. In this way, a smooth surface is formed from the roof panel 8 to the molding 5, and the airflow flows smoothly without generating turbulence, so that no wind noise is generated and the decorativeness is not impaired.

In the embodiment described above, the flap 13 is made of a flexible and elastic material and can be raised and lowered through the constriction part 12. Therefore, even when the molding 5 is curved in the longitudinal direction, the flap 13 can be easily moved. can be raised and lowered.

In the above embodiment, the bag-shaped tube 15 is attached to the fixing part 26.
When the tube 15 is fixed to at least the bottom 20 and the inner surface of the flap 13, and both sides of the tube 15 are left free,
As soon as the inside of the cavity 16 becomes negative pressure, it acts to quickly return the flap 13 to its original state, and while the engine is running and the wiper drive switch is OFF, the flap 13 is always kept close to the roof panel 8. Since it acts to attract the flap toward the surface side, no gap is generated between the tip of the flap 13 and the surface of the roof panel 8.

Further, the regulating portion 21 prevents the flap 13 from expanding excessively, and also provides good results in protecting the tube 15 from external influences such as rainwater, dirt, sand, and window washer fluid.

As a modification of the drive device in FIG. 4, there is a gap q 32 between the large cylinder 32 and the small cylinder 33 as shown by the broken line.
a, and pipes 30a, 30 are installed at both ends of the large cylinder 32.
b can be connected and connected only to the suction pipe 3o via the switching valve 28a, so that the switching valve 28 can be omitted. In this case, the exhaust gas is introduced above or below the large cylinder 32 to drive the large piston 34 by switching the switching valve 28a.

5 and 6 are sectional views taken along the line A-A showing an embodiment in which the present invention is applied to a hard top type. FIG. 5 shows a state in which the flap 13 is down, and FIG. 6 shows a state in which it is upright. show. In this embodiment, the molding 5 has a resin part 11 made of soft synthetic resin fixed to the tip of a metal molding main body 5a shown in FIG. 14, and a flap 13, a cavity 14, a tube 15, a cavity part 16, etc. They are provided in the same way as in FIGS. 4 to 4, and have similar effects.

FIGS. 7 and 8 are sectional views taken along the line A-A showing another embodiment applied to a sedan type, with FIG. 7 showing the state in which the flap 13 is down, and FIG. The example is constructed almost the same as in FIGS. 1 to 4, but the bottom 20 of the cavity 14 is fixed to the molding body 5a,
The tip of the flap 13 comes into contact with the bent portion 8a of the roof panel 8.

FIG. 9 is a cross-sectional view of a part of another embodiment, in which the tube 15 is made of a material that expands when fluid is supplied into the cavity 16, but whose outer diameter is less likely to expand (for example, (such as a pump hose), the restricting part 21 can be omitted by selecting the diameter of the tube 15 so that the flap 13 stands up in a predetermined position when the tube 15 is expanded to its maximum extent. You can also do it.

Even in the case of this embodiment, in order to stably keep the tube 15 in a predetermined position, it is preferable that it is partially fixed to the bottom part 20 and the inner surface of the flap 13 by the fixing part 26, and both sides are left free. It is also possible to omit the bottom part 20 and fix the tube 15 to the roof panel 8 or the molding body 5a, etc.

FIG. 10 is a sectional view showing still another embodiment, in which a bag-shaped cavity 14 is integrally formed with the flap 13, and a sealed cavity 16 is formed inside.
Fluid enters and exits directly.

FIG. 11 is a partial system diagram showing a drive device in another embodiment. In this embodiment, a cylinder 37 is connected to the guide tube 25, and the piston 38 of the cylinder 37 is always urged by a spring 39 in the direction in which the screw rod 40 protrudes. The tip of the piston rod 40 faces toward the surface of an eccentric cam 42 that is integrally fixed to a shaft 41 of a reduction gear of a wiper drive motor. A suction boat 43 and a discharge boat 44 are provided at the rear end of the cylinder 37, and the suction port 1-43 is opened to the atmosphere via a check valve 45. On the other hand, the discharge port 44 is similarly connected to the guide tube 25 via a check valve 46. A pressure valve (safety valve) 47 and a fluid relief valve 48 are provided in the middle of the guide tube 25, and the pressure valve 47 discharges the fluid to the outside when the pressure of the fluid in the guide tube 25 exceeds a certain level. It looks like this.

On the other hand, the fluid relief valve 48 allows a very small amount of fluid to escape to the outside at all times. This relief area should be adjusted so that the fluid at 1 atm or higher that enters the cavity 16 and the guide tube 25 returns to 1 atm in several tens of seconds to several minutes. When the rain begins to fall and the driver turns on the wiper drive switch (including the state where it is turned on by an automatic raindrop detection sensor (not shown)), the wiper drive motor rotates and the eccentric cam 42 fixed to the shaft 41 of the reducer rotates. rotates and pushes the piston rod 40 against the spring 39. piston rod 40
The piston 38 at the tip compresses the fluid in the cylinder 37, and the compressed fluid passes through the check valve 46, passes through the guide tube 25, and flows into the cavity 16 from the tip of the guide tube 25. After one revolution, the surface of the eccentric cam 42 separates from the tip of the piston rod 40, and at this time the piston 38 is pushed back to its original position by the spring 39.
When the piston 38 is pushed back, fresh fluid fills the cylinder 37 through the suction boat 43.

When the wiper is in a driving state, the eccentric cam 42 rotates continuously or intermittently, so that fluid is sequentially fed into the cavity 16, causing the flap 13 to rise as the cavity 16 expands. Fluid is continuously fed by the rotation of the eccentric cam 42, but when the pressure exceeds a predetermined value, the 38 bodies are discharged from the pressure valve 47, and the tube 15 etc. are not damaged due to overpressure.

On the other hand, when the rain stops, the wiper drive switch is turned to
It becomes FF and the eccentric cam 42 stops rotating.

In this state, the fluid in the cavity 16 and the guide tube 25 is gradually discharged to the outside from the fluid relief valve 48 and begins to return to atmospheric pressure, and the flap 13 is brought down to the surface side of the roof panel 8 due to the restoring force and the tip The liquid is applied to the roof panel 8 again, restoring it to its original state.

In the above explanation, the molding 5, the flap 13
, the material, structure, etc. of the cavity 16 and the drive device can be changed.

〔Effect of the invention〕

According to the present invention, the flap is provided on the molding body so that it can be raised and lowered, and the flap is raised and lowered by allowing fluid to enter and exit the cavity.This prevents rainwater from flowing down during rainy weather, and also prevents rainwater from flowing down during normal driving, especially at high speeds. It can prevent the generation of turbulence and wind noise when driving, has an excellent appearance, has a simple structure, and has fewer failures.

[Brief explanation of drawings]

FIGS. 1 and 2 show a 12th embodiment of the present invention.
A-A sectional view in the figure, Figure 3 is a partially enlarged view of Figure 2, Figure 4 is a partially enlarged view of Figure 2.
The figure is a system diagram, Figures 5 to 10 are A-A sectional views showing other embodiments, Figure 11 is a system diagram of the drive device in another embodiment, Figure 12 is a perspective view of the vehicle, Figures 1 and 14 are sectional views taken along line AA of a conventional molding. In each figure, the same reference numerals indicate the same or equivalent parts, 5 is the molding, 5a is the molding body, 7 is the drip rail, 8 is the roof panel, 9 is the groove, 12 is the constriction, 13 is the flap, and 14 is the empty room. , 15 is Chunibu, 16
20 is a hollow portion, 20 is a bottom portion, 21 is a regulating portion, 25 is a guide tube, 27 is a pressure intensifier, 28 is a switching valve, and 29 is an exhaust pipe system. Agent: Patent Attorney Nari Yanagihara)

Claims (6)

[Claims] (1) In a drip molding that is installed along a drip rail formed on the side of the roof of a vehicle, there is a molding body that is attached to the drip rail or the side of the vehicle body, and a groove that protrudes undulatingly from the molding body toward the roof panel. a flap forming a
This drip molding includes a cavity that is formed airtight inside the flap and expands and contracts as fluid enters and exits, causing the flap to rise and fall. (2) The drip molding according to claim 1, wherein the flap has flexibility and elasticity and is provided so as to be able to rise and fall through the constriction. (3) The drip molding according to claim 1 or 2, wherein the flap is brought down by the restoring force of the flap itself. (4) The drip molding according to any one of claims 1 to 3, wherein the cavity is formed integrally with the flap. (5) The drip molding according to any one of claims 1 to 3, wherein the cavity is formed by a tube separate from the flap. (6) The drip molding according to any one of claims 1 to 5, wherein fluid enters and exits the cavity in conjunction with the drive of the wiper.