JPH09207571A - Door weather strip structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a door closing property without requiring any excessive door closing force so as to increase a sealing property for an interior by providing an internal pressure regulating device, by which air is controlled so as to be discharged when a door is closed for forcibly compressing a weather strip and is controlled so as to be supplied when the door is fully closed for forcibly inflating the weather strip. SOLUTION: A hollow type weather strip 3 is installed in a body 1 of an automobile, and a lip type weather strip 4 is installed in a door 2. The weather strip 3, into which air is fed from an air compressor unit A via a hose 9, is forcibly compressed when a hinge side door opening sensor detects the position in which the opened door 2 is closed and air inside the weather strip 3 is discharged. When the door 2 is fully closed (locking condition), the weather strip 3 is filled with air from the air compressor so as to be forcibly inflated, and as a result, a sufficient sealing property can be obtained by means of a reaction force of the weather strip 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door weatherstrip mechanism for adjusting the internal pressure of a hollow door weatherstrip when the door is opened and closed.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a conventional weather strip having a double mounting structure. A hollow tube-shaped weather strip 3 is attached to the body 1 of the automobile, and a lip-type weather strip 4 is attached to the door 2. The weather strip 3 has a circular cross section, and a welt 5 is formed on one side thereof.
Attached to.

From the fully opened state of the door 2 of FIG. 5A, the door 2 contacts the weather strip 3 of the body 1.
The semi-closed state of (b) leads to the locked state (fully closed state) of FIG. 5 (c). During this period from (b) to (c), the door 2 receives the reaction force of the weather strip 3.

[0004]

When the door of an automobile is closed, the door may be half-locked due to air resistance, latch resistance, reaction force of the weather strip, etc. This is often caused by the reaction force of the weather strip, and the conventional weather strip 3 as shown in FIG.

The weather strip has functions of waterproofing, soundproofing, dustproofing, etc., and in recent years, the weather strip itself has become a double or triple-grade construction in order to further enhance these functions. , The door closing property deteriorates,
Furthermore, the deterioration of the airtightness due to the deterioration of the weather strip with time also poses a problem.

The present invention has been made by paying attention to the above-mentioned points. It does not require an excessive closing force, improves the closing property of the door, enhances the airtightness of the vehicle interior, and is airtight due to deterioration over time. It is an object of the present invention to provide a door weather strip mechanism with less deterioration.

[0007]

According to the first aspect of the present invention,
A hollow tube-shaped weatherstrip attached to a door or body, and for exhausting air when the door is closed to forcibly compress the weatherstrip and supplying air when the door is fully closed to forcibly expand the weatherstrip. And an internal pressure adjusting device controlled by.

Therefore, in the invention according to claim 1, when the door is closed, the air in the weather strip is exhausted and the weather strip is forcibly compressed, and the reaction force of the weather strip at the time of closing the door is almost eliminated. , Therefore, the door is easily closed, half-lock is prevented, and when the door is closed in the locked state (fully closed state), the weather strip is forcibly expanded with a high internal pressure, so that the airtightness is further improved. Therefore, the functions of waterproofing, soundproofing, and dustproofing are enhanced, and the performances such as vibration prevention and noise prevention of the door during traveling are further improved.

A second aspect of the present invention is the door weather strip mechanism according to the first aspect, wherein the internal pressure adjusting device includes an in-vehicle air compressor unit including an air compressor, an electromagnetic valve, and a control circuit, and a door. A door opening detecting means for detecting an opening and outputting a signal for controlling the air compressor unit.

Therefore, according to the second aspect of the present invention, the door opening detecting means detects the door closing operation to automatically perform the exhaust and forced compression of the weather strip, and also to supply the air when the door is locked. Forced expansion is done automatically.

A third aspect of the present invention is the door weather strip mechanism according to the first aspect, wherein the internal pressure adjusting device is an in-vehicle air compressor unit including an air compressor, a solenoid valve, and a control circuit, and the weather strip. A pressure sensor for detecting the internal pressure of the weather strip, and controlling the air compressor unit based on a signal of the pressure sensor to keep the internal pressure of the weather strip constant. .

Therefore, according to the third aspect of the present invention, when the internal pressure of the weather strip decreases, air is supplied from the air compressor unit so that the internal pressure can be kept constant at all times, and the pressure decrease due to deterioration over time is prevented. it can.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings.

In FIG. 1A, a hollow weather strip 3 is attached to a vehicle body 1, and a lip weather strip 4 is attached to a door 2. The hollow type weather strip 3 is in the shape of a closed tube having a circular cross section, has a welt 5 formed on one side surface, and is fixed by inserting the welt 5 into the joint portion 6 of the body 1. The base of the lip-type weather strip 4 is fixed to the corner of the door 2 on the free end side.

As shown in FIG. 2, the weather strips 3 are attached to the floor 7 side and the roof 8 side of the body 1 of the automobile, and each weather strip 3 is supplied with air from the air compressor unit A via a hose 9. Are being supplied. Although only the right door portion is shown in FIG. 2, the left door has a similar mechanism.

A hinge side door opening sensor 12 is provided on the hinge 11 side of the door 2, and a free end side door opening sensor 14 is provided on the free end 13 side. As the opening degree sensors 12 and 14, for example, a proximity sensor, a magnetic sensor,
A variable resistance sensor or the like can be used and may be attached to either the door 2 or the body 1.

FIG. 3 shows an example of an internal pressure adjusting device A for adjusting the internal pressure of the weather strip. In FIG. 3, FL is the left floor side, RL is the left roof side, FR is the right floor side, and RR is the respective weather strips 3 on the right roof side.
Is shown.

The internal pressure adjusting device A comprises an on-vehicle air compressor unit 20, a hinge side door opening sensor 12, and a free end side door opening sensor 14. The air compressor unit 20 includes an air compressor 15 and
Main solenoid valve 16 connected to this air compressor 15, and solenoid valve 1 connected to this main solenoid valve 16
7a, 17b, 17c and 17d, and a control circuit 18 for controlling the air compressor 15 and the solenoid valves 16, 17a-17b. Each solenoid valve 17a, 17
b, 17c and 17d are connected to the respective weather strips 3 of FL, RL, FR and RR. The hinge side door opening sensor 12 and the free end side door opening sensor 14 are each connected to a control circuit 18.

Next, the operation will be described with reference to the flow chart of FIG. Normally, as shown in FIG. 3, air is supplied from the air compressor 15 to the weather strip 3 via the electromagnetic valve 16 and the electromagnetic valves 17a to 17d, and the internal pressure is set so that the weather strip can function. . Since the left side and the right side have the same operation, the F on the right side
Only the R and RR weather strips 3 will be described.

As shown in FIG. 1 (a), when the hinge side door opening sensor 12 detects the position where the door 2 is moved from open to closed (step S1), the solenoid valve 16 and the solenoid are connected via the control circuit 18. The valves 17c and 17d are switched to the exhaust side (step S2), the air in the FR and RR weather strips 4 is exhausted from the exhaust port 19, and the internal pressure of the weather strip becomes 0, as shown in FIG. 1 (b). The weather strip 3 is forcibly compressed (step S3).

From this state, as shown in FIG. 1C, when the door 2 is fully closed (locked state), the free end side door opening sensor 14 detects this (step S4), and the control circuit 18 The solenoid valve 16 and the solenoid valves 17c and 17d are returned to the supply side of FIG. 3 (step S5), the weather strip 3 is filled with air from the air compressor 15, and the initial internal pressure is set (step S6). The forced expansion state of (c) is reached. In this state, the lip-type weather strip 4 contacts the body 1, and the reaction force of the weather strip 3 provides sufficient sealing performance.

When the door 2 is opened in the forced expansion state shown in FIG. 1C, unlocking is detected by the free end side door opening sensor 14 (step S7), and the process returns to the start.

As described above, since the weather strip 3 is forcibly compressed when the door is closed, there is almost no reaction force of the weather strip 3 when the door is closed, so that the door 2 is easily closed and half lock is prevented. In addition, the weather strip 3 can be set to a high internal pressure when fully closed in the locked state, so that it is possible to further enhance the sufficient airtightness and enhance the waterproof, soundproof, and dustproof functions. Further, performances such as vibration prevention and noise prevention of the door during traveling are further improved.

Furthermore, the internal pressure of the weather strip 3 is detected by, for example, a pressure sensor, and the air compressor unit 20 is controlled by this detection signal to keep the internal pressure of the weather strip 3 constant at all times. It is possible to avoid deterioration of the property and to extend the life of the weather strip.

In the above embodiment, two types of hollow weather strips 3 and lip type weather strips 4 are used.
Although the example of the heavy attachment structure is shown, the present invention is not limited to this, and only the hollow weather strip 3 may be used, or the weather strip 3 may be attached to the door 2 side.

Although two sensors, the hinge side door opening sensor 12 and the free end side door opening sensor 14, are provided, one sensor can be used if two positions, the locked state and the open state, of the door 2 can be detected. It may be.

Further, as the sensor, an optical (proximity) sensor, a magnetic sensor, a variable resistance sensor or the like can be used.

[0028]

As described above in detail, according to the first aspect of the present invention, when the door is closed, the air in the weather strip is exhausted to forcibly compress the weather strip, so that the door is closed. The reaction force of the weather strip of
When the door is easy to close and half lock is prevented, and the weather strip is fully closed in the locked state, the weather strip can be set to a high internal pressure, so the airtightness can be further improved, and it is waterproof, soundproof, and dustproof. Function is improved, and performances such as vibration prevention and noise prevention of the door during traveling are further improved.

According to the second aspect of the present invention, the vehicle-mounted air compressor unit and the door opening detecting means for detecting the opening of the door and outputting the signal for controlling the air compressor unit are provided. The door opening detection means detects the door closing operation, and the weather strip is exhausted and forcedly compressed automatically, and when the door lock is fully closed, air supply and forced expansion are automatically performed. A reliable operation can be obtained.

According to the third aspect of the invention, since the pressure sensor for detecting the internal pressure of the weather strip is provided,
When the internal pressure of the weather strip decreases, air is supplied from the air compressor unit, and it is possible to maintain a constant internal pressure at all times, and to prevent pressure decrease due to deterioration over time,
The life of the weather strip can be extended and reliable operation can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a door weather strip mechanism of the present invention, in which (a), (b) and (c) respectively show an operation of closing a door.

FIG. 2 is a perspective view of a vehicle door portion provided with a door weather strip mechanism of the present invention.

FIG. 3 is a block diagram showing an example of an internal pressure adjusting device used in the door weather strip mechanism of the present invention.

FIG. 4 is a flowchart explaining the operation of the door weather strip mechanism of the present invention.

FIG. 5 is a cross-sectional view of a conventional weather strip, (a),
(B) and (c) show the operation of closing the door.

[Explanation of symbols]

 1 body 2 door 3 weather strip 12 hinge side door opening sensor 14 free end side door opening sensor 15 air compressor 16 solenoid valve 17a, 17b, 17c, 17d solenoid valve 18 control circuit 20 air compressor unit A internal pressure adjusting device

Claims (3)

[Claims] 1. A hollow tube-shaped weatherstrip attached to a door or a body, and air is exhausted when the door is closed to forcibly compress the weatherstrip and air is supplied when the door is fully closed. A door weather strip mechanism, comprising: an internal pressure adjusting device that is controlled so as to forcibly expand. 2. The internal pressure adjusting device comprises a vehicle-mounted air compressor unit including an air compressor, a solenoid valve, and a control circuit, and a door opening for detecting a door opening and outputting a signal for controlling the air compressor unit. The door weather strip mechanism according to claim 1, further comprising a detection means. 3. The internal pressure adjusting device includes a vehicle-mounted air compressor unit including an air compressor, a solenoid valve, and a control circuit, and a pressure sensor for detecting an internal pressure of the weather strip. 2. The door weather strip mechanism according to claim 1, wherein the air compressor unit is controlled based on the air compressor unit to keep the internal pressure of the weather strip constant.