JPH0330165Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a ventilation system for vehicles, and more specifically, it is mainly used for large vehicles such as buses and trucks, and it is possible to move the ventilation lid in any direction and in stages. This relates to ventilation equipment that can be opened and closed.

[Prior Art] Generally, large vehicles such as buses are equipped with a ventilation system to purify the air inside the vehicle and adjust the temperature inside the vehicle.

Conventionally, this type of ventilation system was developed by, for example, the
As disclosed in Publication No. 19364 and Japanese Utility Model Publication No. 45-21048, this device is a device that opens and closes a ventilation cover via a link mechanism to a ventilation opening provided on the roof of a vehicle. By moving the handle attached to the back side of the lid up and down in two steps, the front end of the ventilation lid connected to the end of the link mechanism is raised while being tilted forward in the direction of travel of the vehicle. It was configured to perform three actions: ventilation (air supply), raising the rear end of the ventilation lid to extract ventilation (exhaust), and closing the ventilation opening with the ventilation lid. It is something.

[Problem to be solved by the invention] The above ventilation system is also known as "2-way ventilation system"
It is a device that performs suction ventilation at the first opening position and forced ventilation at the second opening position, and is superior in that it has a relatively simple structure, but it has the following features: It has various problems and is not necessarily an effective device.

That is, the first problem is that when the end of the ventilation lid at the rear in the direction of travel of the vehicle is lifted to the first opening position and the inside of the vehicle is sucked out, the ventilation lid is simply pushed up by the elastic force of the spring. Since the ventilation cover is only in a closed position, it has the disadvantage that the support for the ventilation cover is unstable and that it closes due to wind pressure.

Therefore, a strong spring must be used to open the ventilation lid with enough elasticity to withstand the wind pressure. Naturally, using such a strong spring makes it difficult to open and close the ventilation lid.

The second problem is that since the link mechanism is used as the means for opening and closing the lid member, the structure is complicated and the number of parts is large, and when the lid member is closed, the link mechanism There were problems in that it protruded to the side, narrowing the vehicle interior space, and was extremely difficult to assemble.

In addition, as disclosed in Japanese Patent Application Laid-Open No. 56-63508, an opening/closing mechanism for an air supply damper opens and closes the opening area of the air supply port in stages through a guide pipe that contacts the cam surface of the air supply damper. However, in the case of this invention, the air supply damper cannot be opened in any direction, and the mechanism for adjusting the opening area of the air supply port uses a cam etc.
There were problems in that the structure was complicated and it was difficult to firmly fix the opening position.

Further, a ventilation device in which the air supply opening is opened in multiple directions is disclosed in Japanese Utility Model Publication No. 12850/1983, but in the case of this device, the lid 1 is attached to four telescopic legs. It is supported by the connecting pipe 6 and the opening/closing operation is performed by the connecting pipe 6.
This is done with the help of a compression spring, especially when storing the lid 1 by pushing it down below the dead point, so the opening area of the air supply port is limited. The problem was that it was difficult to adjust.

Furthermore, in the vehicle ventilation system disclosed in Japanese Utility Model Application Publication No. 58-43509, both ends of the torsion bar spring are inserted into holes in the ventilation frame on the vehicle body side, so the ventilation cover can be easily installed and removed. Therefore, there was a problem that the assembly workability and maintainability were poor.

This invention was devised by focusing on such conventional problems, and its purpose is to ensure that the opening state of the ventilation lid member is maintained, and that the lid member can be opened and closed even at a relatively low position. In addition, the lid member can be opened in any direction, the opening area can be adjusted in stages, and the lid member can be easily attached and removed, improving the assembly workability. The present invention provides a vehicle ventilation system with improved maintainability.

[Means for Solving the Problems] In order to achieve the above object, this invention has an elastic engagement member attached to the center of the lower surface of the lid covering the ventilation opening of the vehicle body, and three or more branches of the elastic engagement member. A lid opening/closing member having an end that is brought into contact engagement with the lower surface of the flange of the ventilation port and having a plurality of locking steps that can be locked on the upper surface of the flange portion is hingedly engaged between the branched end portions of the lower surface of the lid. This is what happens.

[Function] Next, the function of the vehicle ventilation system of the present invention having the above-mentioned configuration is as follows.

First, from the state where the lid member is closed,
If you want to open a part of the lid member in the direction of travel of the vehicle, hold the other end of the lid holding member and push it upwards. It is pushed up against the force, creating an opening that admits forced ventilation (supply air).

When a predetermined opening is obtained in this way, the desired locking portion of the lid holding member is locked to the flange portion formed at the peripheral edge of the ventilation port, and in this state, release the hand. Then, the lid member tries to act in the closing direction due to the elastic force of the elastic engagement member, but as a result of being held by the locking portion of the lid holding member that is locked to the flange portion, the lid member A constant open state is maintained.

In addition, the cover member may be opened on the side opposite to the direction of vehicle travel, or opened on the side for suction ventilation (exhaust air).
If it is desired to do so, the locking portion may be locked with the flange portion by pushing up the other lid holding member by the same operation as described above.

Next, when the lid member is to be closed from the open state, the lid holding member is pushed up at one end to remove the locking portion from the flange portion, and the lid member is held in place by the elastic engagement. Automatically closes due to the elastic force of the members.

Furthermore, when the lid member is removed from the wall surface of the vehicle, the elastic engagement member that elastically connects the wall surface and the lid member is further bent than the state shown in FIG. The cover member can be easily removed by separating the cover member from the flange portion of the ventilation port.

Furthermore, by opening all of the opening/closing means, it is possible to open the entire lid member, and by adjusting the locking position of each of the locking parts, the opening area can be arbitrarily adjusted. It can be adjusted.

[Example] An example of the vehicle ventilation system of this invention will be described below based on the accompanying drawings.

Figure 1 shows a bus 1 in which this invention has been implemented, and Figure 2 shows a wall 2 that partitions the outside of the vehicle 1 and the inside of the vehicle.
The ventilation device 3 provided in the figure is shown. Note that this first
The wall surface 2 on which the ventilation device 3 of the embodiment is provided is the roof, and it can also be provided on the floor or the body (indicated by chain lines in FIG. 1).

As shown in FIGS. 2 and 3, the ventilation device 3 has a circular lid member 6 attached to a circular ventilation opening 4 formed in a wall surface 2 via a sealing material 5 so as to be openable and closable. There is.

An elastic engagement member 8 composed of a substantially triangular plate spring is attached to the back side of the lid member 6 via a pin 7, and the three branched ends 81 of the elastic engagement member 8 are connected to the The cover member 6 is slidably engaged with the lower surface of a flange portion 9 formed at the peripheral edge of the ventilation port 4 to always bias the cover member 6 in a direction to close it.

In addition, the lid member 6 can be opened and closed in any direction at multiple locations (three locations in this embodiment) with the back peripheral edge of the lid member 6 that engages with the flange portion 9 of the wall surface 2 where the ventilation opening 4 is provided. Furthermore, an opening/closing means 10 is provided which can adjust the opening area in stages.

As shown in FIGS. 4 and 5, the opening/closing means 10 has a hinge plate 11 fixed to the back surface of the lid member 6 by welding or the like, and locking holes 12 of the hinge plate 11 are formed in multiple stages on the side surface. One end 14a of a plate-shaped lid holding member 14 provided with a saw-blade-shaped locking portion 13 is rotatably attached via a pin 15.

The lid holding member 14 has a notch 16 formed in the center as shown in FIG.
Moreover, they are integrally provided at predetermined intervals.

Next, the opening/closing operation of the vehicle ventilation system of this invention having the above-mentioned configuration will be explained.

First, if you want to open a part of the lid member 6 with respect to the running direction of the bus 1 from the closed state as shown in FIG. 14b and push it upward, a part of the lid member 6 is pushed up against the elastic force of the elastic engagement member 8, as shown in FIG. 4, and an opening is formed to take in forced ventilation (air supply). be done.

Once a predetermined opening is obtained in this way, the desired locking portion 13 of the lid holding member 14 is locked to the flange portion 9 formed at the peripheral edge of the ventilation port 4, and in this state, release the hand. Then, the lid member 6 tries to act in the closing direction due to the elastic force of the elastic engagement member 8, but the lid holding member 1 locked to the flange portion 9
As a result of being held by the locking portion 13 of 4, the lid member 6
is maintained in a constant open state.

In addition, if you want to open the side of the cover member 6 opposite to the vehicle running direction or open the side for suction ventilation (exhaust), push up the other cover holding member 14 by the same operation as described above. The locking portion 13 may be locked to the flange portion 9.

Next, when the lid member 6 is to be closed from the open state, the lid holding member 14 is pushed up at one end to remove the locking portion 13 from the flange portion 9, and the lid member 6 is moved to the elastic engagement member. Automatically closes due to the elastic force of 8.

Furthermore, when removing the lid member 6 from the wall surface 2 of the bus 1, the elastic engagement member 8 that elastically connects the wall surface 2 and the lid member 6 is further bent than the state shown in FIG. By separating the portion 81 from the flange portion 9 of the ventilation port 4, the lid member 6 can be easily removed.

Further, in the first embodiment described above, only a part of the lid member 6 is opened and closed, but the entire lid member 6 can be opened by opening and closing all the opening/closing means 10. Also, by adjusting the locking position of the locking portion 13, the opening area can be arbitrarily adjusted.

6 to 8 show a second embodiment of the vehicle ventilation system of the present invention, in which a torsion bar is used as the elastic engagement member 8c, and two torsion bars 18a and 18b are used. It is bent to form a swastika shape, and each bent portion is fixed to the lid member 6c via the mounting bracket 19, and the terminal portion 181 as a branched end is slidably brought into contact with the lower surface of the flange 9 of the wall surface 2c. It was designed to match.

Further, since the opening/closing means 10 and other configurations are the same as those in the first embodiment, the same reference numerals will be given and explanations will be omitted.

Furthermore, as mentioned above, the configuration of the ventilation system in this second embodiment is almost the same as that in the first embodiment except for the change in the elastic engagement member 8c, so its operation is also the same as in the first embodiment. It is almost the same as that of the embodiment.

In the above two embodiments, an example of a ventilation system for a bus has been described, but the invention can also be applied to other vehicles such as trucks.

[Effects of the invention] As described above, this invented vehicle ventilation system has an elastic engagement member attached to the center of the lower surface of the lid that covers the ventilation opening of the vehicle body, and three or more branch ends of the elastic engagement member. contactingly engages the lower surface of the flange of the ventilation port,
A lid opening/closing member having a plurality of locking steps that can be locked on the upper surface of the flange portion is hingedly engaged between the branched end portions on the lower surface of the lid, so that the opening state of the lid member can be maintained and the opening/closing operation can be easily performed. The lid member can be opened and closed easily and reliably from a relatively low position, and the lid member can be opened in any direction and the opening area can be adjusted in stages. Furthermore, since a link mechanism is not used as the means for opening and closing the lid member as in the past, the structure is simple and the number of parts is small, and when the lid member is closed, the link mechanism protrudes toward the passenger compartment. There is no need to narrow the space, and since the lid member is only slidably engaged with the lower surface of the flange of the ventilation port, the lid member can be easily attached and removed. This has the effect of improving assembly workability and maintainability.

[Brief explanation of drawings]

FIG. 1 is a side view of a vehicle showing a first embodiment of the vehicle ventilation system of this invention, FIG. 2 is a sectional view showing the ventilation system in the same embodiment in a closed state, and FIG. - A bottom view as viewed from the arrows, FIG. 4 is a cross-sectional view showing the opening/closing means of the ventilation device in an open state, FIG. 5 is a perspective view of the lid holding member of the ventilation device, and FIGS. 6 and 7 are views of the ventilation device. A side view and a bottom view showing the second embodiment, and FIG. 8 is a perspective view of the torsion bar. 2, 2c... Wall surface, 3, 3a... Ventilation system, 4
... Ventilation port, 5 ... Sealing material, 6, 6c ... Lid member, 7 ... Pin, 8, 8c ... Elastic engagement member, 1
0... Opening/closing means, 11... Hinge plate, 13
... Locking part, 14 ... Lid holding member, 16 ... Notch, 18a, 18b ... Torsion bar, 19 ...
...Mounting fitting, 81, 181... Branch end of elastic engagement member.

Claims (1)

[Scope of utility model registration request] An elastic engagement member is attached to the center of the lower surface of a lid that covers the ventilation opening of the vehicle body, three or more branched ends of the elastic engagement member are brought into contact and engagement with the lower surface of the flange of the ventilation opening, and the flange portion A ventilation system for a vehicle, in which a lid opening/closing member having a plurality of locking step portions that can be locked on an upper surface is hingedly engaged between the branched end portions of the lower surface of the lid.