JPH092049A - Ventilation device for vehicle - Google Patents

Abstract

PURPOSE: To provide a ventilation device which reduces fitting manhour and is useful for preventing water invasion. CONSTITUTION: This ventilation device is provided with a frame body 1 of which the outer size is larger than the opening part of a vehicle body panel and a plurality of exhaust ports (e) are openedly provided on the inner part, and an elastic seat plate 2 which is fitted to the frame body 1, enlarged in the outer size more than the opening part (d), and provided with tongue piece parts 21 capable of covering the respective exhaust ports (e) by forming slits 23 along the circumferential edges except the upper edges concerning the respective exhaust ports (e) in the inner part, and the frame body 1 is fitted to the opening part of the vehicle body panel through the elastic seat plate 2 from the vehicle room side. Hereby, the outer circumferential part 22 of the elastic seat plate 2 is pinchedly fitted, and the tongue piece parts 21 covering the exhaust ports (e) open the exhaust ports (e) according to rise of the pressure in the vehicle room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle provided to ensure ventilation of a vehicle interior while a vehicle is running and to prevent foreign matter and exhaust gas from entering the vehicle interior when the vehicle is stopped. Ventilation system.

[0002]

2. Description of the Related Art A ventilation device for a vehicle (hereinafter, simply referred to as a "ventilation device") is provided in a rear portion of an automobile to replace air in a vehicle interior during traveling.
That. ). The air entering from the front of the passenger compartment,
It is exhausted to the outside of the vehicle in a concentrated manner through the exhaust port of this ventilation device. A flap is attached to the opening frame forming the exhaust port, and during traveling, the flap changes its opening degree according to the pressure difference between the inside and outside of the vehicle compartment to adjust the air volume.
Further, when the vehicle is stopped, the flap covers the exhaust port to prevent foreign matter from entering the vehicle interior from the outside. Further, when the pressure inside the vehicle is lower than the external pressure, such as when a window is opened during traveling, the flap is in close contact with the exhaust port to prevent backflow of exhaust gas and the like.

[0003] Such a ventilator has been improved and has been constituted by an opening frame 6, a flap 7 and a rubber packing 8 as shown in Figs. 9 to 14, for example. The opening frame 6 is
It is made of synthetic resin, and is provided with a plurality of exhaust ports e. Further, the water entry prevention wall 64 is projected from the outside of the vehicle body panel S to the inside. A flap 7 is attached to the exhaust port e to guide air inside the vehicle to the outside of the vehicle and to prevent gas and water from entering from the outside of the vehicle. The flap 7 is a molded product of a non-mineral oil resistant rubber or a thin sheet (usually 0.5 mm to 0.8 mm).
A punched product (thickness of mm) is used, and a plurality of umbrella-shaped inserts 71 are provided on the upper edge of the flap 7 via suspension legs 72 at regular intervals. By inserting this insert body 71 into the square hole 61 of the opening frame 6 (FIG. 13), the flap 7 is rotatably attached with the hanging foot portion 72 as a fulcrum, and in the normal state, the flap 7 covers the exhaust port e. It is in a state (Fig. 1
1, FIG. 12). Then, when the vehicle interior pressure becomes higher than the vehicle exterior pressure, the entire flap tilts and moves away from the opening frame 6, and ventilation is performed in the vehicle interior. Reference numeral 62 indicates a locking claw provided on the side wall of the opening frame 6, and the opening frame 6 is fixed to the edge of the opening by the locking claw 62 and its own outer frame outer peripheral portion 63. (Figs. 10 and 12). The rubber packing 8 is interposed between the outer peripheral portion 63 of the opening frame and the surface of the vehicle body panel S for the purpose of preventing water from entering when fixing the opening frame 6 to the vehicle body panel S. The rubber packing 8 is a long piece of cellular rubber (usually a closed cell sponge such as EPDM), and is attached to the inside of the opening frame 6 by a double-sided tape or the like before the opening frame 6 is attached to the vehicle body panel opening d. It is attached to the peripheral surface (Fig. 10). The symbol B indicates a bumper.

[0004]

However, in the ventilation device as described above, the inserts 71, 71, ... Of the flap 7 are formed.
Had to be inserted into the respective square holes 61, 61, ... Provided in the opening frame 6, which was very time-consuming to assemble. As the number of exhaust ports e increases, the number of flaps 7 also increases, resulting in an increase in assembly man-hours. Ideally, the insert body pitch P of the flap 7 is around 30 mm (Fig. 9). If the pitch is made larger than this, the flap 7 warps and deforms between the pitches, and further, it is received by water pressure from outside the vehicle. There was a possibility that the face would fall off. Therefore, the number of inserts 71 cannot be reduced in order to reduce the number of assembling steps. Further, the work of sticking the rubber packing 8 on the inner peripheral surface of the opening frame 6 is also a factor of increasing the number of assembling steps of the ventilation device, and the burden on the operator is heavy. In addition, the flap 7 is set to have a dimension of the suspension foot portion smaller than that of the square hole of the opening frame so that the opening degree can be changed according to the pressure difference between the inside and outside of the vehicle compartment. There is a possibility that water may enter the gap 61 through the gap α (FIG. 14).

The present invention solves the above problems,
It is an object of the present invention to provide a ventilation device that reduces the number of assembly steps and also helps prevent water from entering.

[0006]

In order to achieve the above object,
The gist of the first aspect of the present invention is that the outer dimension is larger than the opening of the vehicle body panel, the frame body having a plurality of exhaust ports opened therein, and the frame body attached to the frame body, the outer dimension being larger than the opening, An elastic sheet plate provided with a tongue piece capable of covering each exhaust port by a slit provided along a peripheral edge other than the upper edge of each exhaust port therein, and the elastic sheet plate is interposed. By attaching the frame body to the opening of the vehicle body panel from the vehicle interior side, the outer peripheral portion of the elastic sheet plate is sandwiched, and the tongue portion that covers the exhaust port exhausts air in accordance with the increase in vehicle interior pressure. The ventilator for a vehicle is characterized by having an open mouth. Here, the "elastic sheet plate" means
It refers to a plate-shaped body having a low elastic modulus and capable of elastically deforming with a small external force, for example, a plate-shaped body made of a rubber material.

According to the second aspect of the present invention, locking claws are integrally formed on the surface of the frame of the first aspect of the invention, and further, an escape hole is provided at a position of the elastic sheet plate corresponding to the locking claw, and the escape hole is provided. It is characterized in that the frame body is locked and fixed by sandwiching the elastic sheet plate at the edge of the opening by the locking claw inserted through the and the outer peripheral portion of the frame body. The vehicle ventilator of the third invention is the first invention or the second invention,
A plurality of pins are integrally formed on the surface of the frame body, and a small hole is formed at a position of the elastic sheet plate corresponding to the pin, and the elastic sheet plate is positioned on the frame body by inserting the pin into the small hole. It is characterized by The vehicle ventilator according to the fourth aspect of the present invention is characterized in that, in the first aspect to the third aspect, a ridge portion is integrally formed along the outer peripheral edge of the frame body facing the elastic sheet plate.

[0008]

As in the vehicle ventilator according to the first aspect of the present invention, the tongue portion that covers each exhaust port is provided by forming the slits along the peripheral edge other than the upper edge of each exhaust port, and this tongue part is provided, and this is the difference in atmospheric pressure between the inside and outside. When the elastic sheet plate is formed so as to open only in the outer side of the vehicle, the tongue portion can act as a flap only by attaching the elastic sheet plate to the inner frame. Therefore, it is possible to save the labor of inserting the individual flaps into the opening frame as in the conventional case. Then, when the elastic sheet plate and the frame are made larger than the opening, and further the locking claw is provided and pushed into the opening like the vehicle ventilation device of the second invention, the ventilation device is locked at the edge of the opening. Since the claw and the outer frame are clamped and fixed, the mounting structure is simplified, and the elastic sheet plate itself can play the role of packing, so it is necessary to interpose a rubber packing between the ventilation device and the vehicle body panel. Disappears. When the pin and the small hole are formed as in the vehicle ventilator of the third invention, the elastic sheet plate can be positioned on the frame body by inserting the pin into the small hole, which facilitates the assembly work of the ventilator. move on. Like the vehicle ventilation device of the fourth invention,
When the ridges are formed along the outer peripheral edge of the outer frame facing the elastic sheet plate, when the ventilation device is attached to the vehicle body panel, the ridges strongly press the elastic sheet plate together with the vehicle body panel. ,
The sealing property will be further improved.

[0009]

【Example】

(1) First Embodiment Hereinafter, a vehicle ventilation device according to the present invention (hereinafter referred to as “ventilation device”) will be described in detail based on embodiments. 1 to 5 show an embodiment of a ventilation device of the present invention, which is applied to a ventilation device attached to the back of a bumper of a passenger car. 1 is an exploded perspective view of the ventilator, FIG. 2 is a perspective view in which an elastic sheet plate is assembled to the frame body of FIG. 1, FIG. 3 is an explanatory perspective view of attaching the ventilator of FIG. 2 to a vehicle body panel opening, and FIG. Is a vertical cross-sectional view of the ventilation device attached to the opening of the vehicle body panel, FIG.
Shows a cross-sectional view of FIG.

The ventilator according to the present invention has a two-piece construction including a frame 1 and an elastic sheet plate 2. Here, instead of assembling individual flaps for each exhaust port e, a single elastic sheet plate 2 having almost the same size as the frame body 1 is used, and slits are formed to match the exhaust port shape. The tongue piece portion 21 serves as a flap. The ventilation device A is constructed by attaching and fixing the elastic sheet plate 2 to the frame body 1. The ventilation device A is inserted into the opening d from the vehicle compartment side of the vehicle body panel S, and is attached to the edge of the opening with the locking claw 17 and the frame 1 (FIG. 3).

In the frame body 1, an inclined wall 12 and a horizontal wall 13 are connected to each other in a vertical cross-section at three positions in the vertical direction of a vertical wall 11,
This is a frame in which a rectangular exhaust port e is opened in a portion surrounded by the inclined wall 12 and the horizontal wall 13. Reinforcing ribs 14 are provided at the exhaust port e at appropriate intervals so as to receive the tongue portion 21 evenly. A flange 15 is integrally formed on the outer periphery of the frame body 1 to increase the rigidity.
The vertical wall 11 has an outer dimension that is one size larger than the opening of the vehicle body panel, and is 8 mm to 10 m over the entire circumference.
It is about m larger. On the front side of the vertical wall 11 (the front side means the outside of the vehicle when the ventilation device A is attached to the opening d), the pins 16 are provided at regular intervals along the upper portion of the exhaust port e and the outer periphery of the vertical wall 11. Is erected. This pin 16
Is a columnar body having a diameter of about 1.5 mmφ to 2 mmφ and a height of about 3 mm, and is used for positioning when the elastic sheet plate 2 is set on the frame body 1. Further, the head portion 16a crushed by thermal caulking is elastic. It serves to fix the sheet plate 2 to the frame body 1.

Reference numeral 17 designates hook-like engaging claws which are integrally formed at six positions on the front side of the vertical wall at regular intervals. Ventilator A
When attaching the to the opening d of the vehicle body panel S, the locking claw 17
Is arranged at a position where it abuts on the peripheral edge of the opening, and elastically deforms the opening edge to pass through, so that the ventilation device A can be fixed to the opening edge with the outer peripheral portion 1a of the frame body 1. (Fig. 6). More specifically, from the plate surface of the vertical wall 11,
At the position where the thickness of the vehicle body panel is added to the thickness at which the elastic sheet plate 2 is compressed to some extent to have a packing function, the returning portion of the locking claw 17 is bulged. Reference numeral 18 denotes a curved tubular water entry prevention wall that extends on the back side of the vertical wall 11 so as to surround the lowermost exhaust port e (FIG. 4). The frame 1 as described above is a molded product made of synthetic resin (for example, polypropylene), and the above-mentioned constituent parts are integrally molded.

The elastic sheet plate 2 has a thickness of 0.5 mm to 0.8 m.
It is a thin plate with a thickness of m and is made of a punched product made of non-mineral oil resistant rubber such as ethylene-propylene-diene rubber (EPDM). The outer dimensions of the elastic sheet plate 2 are set to be larger than the opening d of the vehicle body panel S by about 8 mm to 10 mm like the frame 1, and when the ventilation device A is assembled to the opening d, the outer periphery of the elastic sheet plate 2 is set. The portion 22 is interposed between the frame body 1 and the vehicle body panel S so as to function as a packing. Reference numeral 23 indicates a slit punched along the peripheral edge other than the upper edge of each exhaust port e (FIG. 1). The tongue portion 21 formed by the slit 23 plays the role of a flap that is a valve body in the conventional ventilation device A, and when the elastic sheet plate 2 is set in the frame body 1, the inclined wall 1 that forms the exhaust port e is formed.
2 and the horizontal wall 13 is mounted on the opening edge f and covers the exhaust port e. When the elastic sheet plate 2 is set on the frame 1 (FIG. 2), the tongue piece 21 is bent at the upper edge of the exhaust port e at an inclined wall angle, and the tongue piece 21 is attached as a ventilation device to reduce the vehicle interior pressure. When the pressure becomes higher than the vehicle exterior pressure, the tongue portion 21 is further bent around the upper edge portion to open the exhaust port e (FIG. 4).

In this embodiment, the horizontally elongated discontinuous slit 2 is formed in the elastic sheet plate 2 along the upper edge of the exhaust port e.
4 are formed. By providing the discontinuous slit 24, the bending resistance at the time of opening the tongue portion 21 is reduced and the valve opening characteristic is improved. As a result, even if the thickness of the elastic sheet plate 2 is increased to some extent, the opening degree of the tongue portion 21 changes according to the pressure difference between the inside and outside of the vehicle compartment, and the air volume can be adjusted. Small holes 25 are punched in the elastic sheet plate 2 in correspondence with the pins 16 provided on the frame body 1. Further, a rectangular escape hole 27 is punched in the elastic sheet plate 2 so as to correspond to the locking claw 17 provided on the frame body 1. The elastic sheet plate 2 is
The outer dimensions are secured as described above, and the slits 23, the discontinuous slits 24, the small holes 25, and the relief holes 27 are punched and formed at the same time.

Next, the procedure for assembling and attaching the ventilation device A using the frame body 1 and the elastic sheet plate 2 will be described. First,
The elastic sheet plate 2 is placed on the surface of the frame body 1, and the pins 16 and 1
6, are inserted into the small holes 25, and the elastic sheet plate 2 is temporarily set on the frame body 1 (FIG. 2). By inserting the pin 16 into the small hole 33, the positioning of the frame body 1 becomes reliable. Then, the head of the pin projecting on the elastic sheet plate 2 is crushed by thermal crimping so that the elastic sheet plate 2 is fixed to the frame body 1. In the present embodiment, the head 16a whose pin is crushed by thermal caulking integrates the frame 1 and the elastic sheet plate 2, but instead of this, for example, a circular hole 41 as shown in FIG.
It is also possible to use a bowl-shaped stopper 4 with a groove. The elastic sheet plate 2 is fixed to the frame body 1 by expanding the circular hole 41 at the cut 42 of the stopper 4 and tightly fitting the circular hole portion into the pin 16. Alternatively, the elastic sheet plate may be fixed to the frame by using a double-sided tape or an adhesive.

The ventilator A thus assembled is then pressed from the passenger compartment side into the opening d of the vehicle body panel S. The slanted wall 12 and the horizontal wall 13 of the frame body 1 pass through the opening d, and the opening edge f thereof faces the outside of the vehicle. And
The locking claw 17 hooks the front surface side of the opening edge, and the locking claw 17
The ventilation device A is fixed to the vehicle body panel S by sandwiching the vehicle body panel S between the frame body 1 and the outer peripheral portion 1a of the frame body 1 (FIG. 5).
Here, since the outer dimensions of the elastic sheet plate 2 and the frame body 1 are larger than the opening d, they stop on the back side of the opening d, and the outer peripheral portion 22 of the elastic sheet plate 2 removes the edge of the opening. Serves as a surrounding packing. Therefore, only by pushing the ventilating device A into the opening d, the ventilating device A which is effective in preventing water from entering is attached to the vehicle body panel S without the rubber packing 8 or the like.

In the ventilator A thus constructed, each tongue piece portion 21 serving as a flap is present in one elastic sheet plate 2, so that not only the number of parts is reduced but also the conventional corners are used. Since the fitting and assembling of the flap 7 into the hole 61 is eliminated, the troublesome work is released. Then, the ventilation device A can be completed only by attaching the elastic sheet plate 2 to the frame body 1 and crushing and fixing the head of the pin 16 with heat caulking, so that the number of assembling steps is greatly reduced. Furthermore, since the elastic sheet plate 2 and the frame body 1 are larger than the opening d, the outer peripheral portion 22 of the elastic sheet plate 2 serves as a water-proof packing.
The long rubber sponge used as the rubber packing 8 is no longer required, and the merit of reducing the number of parts and the number of assembling steps is added. In particular, since the elastic sheet plate 2 is made of a rubber sheet, a reliable seal can be made even with a slight pressure contact, which is effective for preventing water from entering the outer peripheral portion 22. Further, since the tongue piece portion 21 is attached to the opening d only by placing the elastic sheet plate 2 on the frame body 1 by passing the pin 16 through the small hole 25, the flap insertion body 71 is inserted into the square hole 61. Unlike the conventional structure, the gap α is not generated (see FIG. 14), and the effect of preventing water entry is improved.

In addition, if the ventilating device A is pushed into the opening d from the passenger compartment side, the engaging pawl 17 and the frame body 1 will cause the ventilating device A to move.
Is easily pinched and fixed to the edge of the opening, and this pinching force also tightens the outer peripheral portion 22 of the elastic sheet plate 2 to inevitably exert the sealing function. Further, if the discontinuous slit 24 is provided, the tongue portion 21 can be easily operated while widening the material and thickness selection range of the elastic sheet plate 2, so that the flap action and the sealing action of the elastic sheet plate 2 are handled. You will be able to adjust the two better.

(2) Embodiment 2 As shown in FIG. 7, the ventilator of this embodiment has a ridge 19 having an inverted V-shaped cross section on the outer peripheral portion 1a of the frame 1 on the side facing the elastic sheet plate 2. Is provided. FIG. 7 is based on the partially enlarged view of FIG. The ridges 19 are shaped to surround the opening d along the outer peripheral edge. The size of the ridges 19 is adjusted by the thickness of the elastic sheet plate 2, and the width thereof is about 1 mm and the height is about 0.3 mm to 0.5 mm. Other configurations are the same as those of the first embodiment. In addition to the actions and effects of the first embodiment, the ventilator configured as described above has the protrusions 19 that bite into the elastic sheet plate 2 when the ventilator is attached to the opening d, so that the ventilator seals against the vehicle body panel S. Sex is further improved.

(3) Embodiment 3 In the ventilation device of this embodiment, instead of the discontinuous slit 24,
A concave groove 26 as shown in FIG. 8 is formed on the front side of the elastic sheet plate 2. FIG. 8 is based on the partially enlarged view of FIG.
The concave groove 26, unlike the discontinuous slit 24, does not separate the tongue piece 21 from the elastic sheet plate 2. Therefore, the concave groove 26 can be formed as a continuous groove along the upper edge of the exhaust port e. The size of the groove 26 is appropriately selected according to the thickness of the elastic sheet plate 2. Other configurations are the same as those of the first embodiment. In addition to the actions and effects of the first embodiment, the ventilator configured in this way eliminates the slits of the discontinuous slits 24 that are connected to the passenger compartment side of the ventilator, so that gas and water intrusion from outside the vehicle using this can be prevented. Since it is possible to shut out, the sealing action of the elastic sheet plate 2 works more reliably. Of course, the formation of the concave groove 26 changes the opening degree of the tongue piece portion 21 according to the pressure difference between the inside and outside of the vehicle compartment, and facilitates the adjustment of the air volume.

In the present invention, the present invention is not limited to those shown in the above embodiments, but can be variously changed within the scope of the present invention depending on the purpose and application. For the frame 1 and the elastic sheet plate 2, the shape and constituent material of each part can be appropriately selected according to the performance, application, required strength, etc. of the ventilation device.

[0022]

As described above, the vehicle ventilator according to the present invention is easy to assemble, can prevent water from entering, and can secure the sealing property of the exhaust port without using a dedicated packing. It has excellent effects such as labor saving, quality improvement, and cost reduction because the number of parts is extremely reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a vehicle ventilation device according to a first exemplary embodiment.

FIG. 2 is a perspective view in which an elastic sheet plate is attached to the frame body of FIG.

FIG. 3 is an explanatory perspective view of attaching the vehicle ventilation device of FIG. 2 to an opening of a vehicle body panel.

FIG. 4 is a vertical cross-sectional view of a ventilation device attached to a vehicle body panel opening.

5 shows a cross-sectional view of FIG.

FIG. 6 is a partially enlarged perspective view of another mode in which a stopper is fitted into a pin.

FIG. 7 is a partial enlarged cross-sectional view around a ridge portion when a vehicle ventilation device is attached to a vehicle body panel in the second embodiment.

FIG. 8 is a partially enlarged vertical sectional view of the vicinity of an upper portion of a tongue piece portion according to a third embodiment.

FIG. 9 is an exploded perspective view of a conventional vehicle ventilation device.

FIG. 10 is an explanatory perspective view of attaching a conventional vehicle ventilation device to a vehicle body panel opening.

11 is a longitudinal sectional view of FIG.

FIG. 12 is a cross-sectional view of FIG.

FIG. 13 is a partial cross-sectional perspective view showing insertion of a flap into a square hole in a conventional vehicle ventilation device.

FIG. 14 is a partially enlarged perspective view showing a state in which a flap is inserted into a square hole.

[Explanation of symbols]

 1 frame 1a outer peripheral part 16 pin 17 locking claw 19 ridge 2 elastic sheet plate 21 tongue piece 22 outer peripheral part 23 slit 25 small hole 27 escape hole A ventilation device S vehicle body panel d opening e exhaust port

Claims (4)

[Claims] 1. A frame body (1) having an outer dimension larger than that of an opening of a vehicle body panel and having a plurality of exhaust ports formed therein, and an outer dimension larger than the opening, which is attached to the frame body, An elastic sheet plate (2) provided with a tongue portion capable of covering each exhaust port by a slit provided along a peripheral edge other than the upper edge of each exhaust port therein; By attaching the frame body to the opening of the vehicle body panel from the vehicle interior side through the interposition, the outer peripheral portion of the elastic sheet plate is sandwiched and the tongue portion that covers the exhaust port increases the vehicle interior pressure. A vehicle ventilation device characterized in that the exhaust port is opened accordingly. 2. A locking claw is integrally formed on the surface of the frame,
Further, a relief hole is provided at a position of the elastic sheet plate corresponding to the locking claw, and the frame is elastic at the edge of the opening by the locking claw inserted into the clearance hole and the outer peripheral portion of the frame. The vehicle ventilator according to claim 1, wherein the seat plate is sandwiched and fixed. 3. A plurality of pins are integrally formed on the surface of the frame body, and small holes are formed in the elastic sheet plate corresponding to the pins, and the elastic sheet plate is formed by inserting the pins into the small holes. The vehicle ventilation device according to claim 1 or 2, which is positioned on the frame. 4. The vehicle ventilation device according to claim 1, wherein a ridge portion is integrally formed along the outer peripheral edge of the frame body so as to face the elastic sheet plate.