JPH0737932Y2 - Connection structure for switching doors of vehicle air conditioners - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for connecting a drive source side of a switching door for controlling an air flow of a vehicle air conditioner.

[0002]

2. Description of the Related Art In a conventional vehicle air conditioner, in order to improve a warm air condition by mixing cold air and hot air, as shown in FIG. 6, for example, a switch for deflecting a flow of cold air bypassing a heater core 100 is performed. The variable door 102, which is a door, is provided on the rear side of the bypass passage 104 to provide the air mix door 10.
It is well known that the variable door 102 is made vertical when it is fully hot and is horizontal when it is fully cool by interlocking with the rotation of 6.

The air mix door 106 and the variable door 102 are connected to each other by a lever 108 fixed to the air mix door 106 and a variable door 102 connected to the lever 108 and a rod 110 connected to the lever 108. is there.
Note that 112 is an air conditioning case, 113 and 114 are inlets and outlets of the air conditioning case, and 115 is a hot air passage.

[0004]

However, in the connection structure according to the above-mentioned prior art, the variable door, which is a switching door, is rotated following the drive of the air mix door, which is the main drive door. For example, the door operation schedule of stopping the rotation of the variable door when the opening of the air mix door becomes equal to or larger than the predetermined opening cannot be appropriately changed. In order to change the door operation schedule, it is necessary to additionally equip a complicated link mechanism or the like therewith, but such equipment cannot be easily added, and the cost and installation space are restricted. Not practical.

In view of the above problems, it is an object of the present invention to provide a switching door connection structure for a vehicle air conditioner, which has a simple structure and can easily change the door operation schedule. To do.

[0006]

In order to achieve the above object, a connecting structure for a switching door of an air conditioner for a vehicle according to the present invention has a structure in which a force is transmitted from a main drive door through a rod and a shaft serves as a fulcrum. A connecting structure for rotating switching doors,
The base of the elastic member is fixed to the side surface of the switching door opposite to the main drive door, one end of the rod is connected to the tip of the elastic member, and a stopper for restricting the movement of the switching door is provided.

[0007]

Therefore, when the main drive door reaches a predetermined opening, the rotation of the switching door is stopped by the stopper,
Even if the main drive door rotates by a predetermined opening or more, the driving force transmitted to the switching door via the rod only pushes the elastic member and is released, so that the door operation schedule can be easily changed. It can be performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, in an air conditioning case 1, an air inlet 2 is opened on the upstream side and an air outlet 3 is opened on the downstream side, and a heater core 4 is obliquely arranged in the middle thereof. ing. The arrangement of the heater core 4 in the air conditioning case 1 divides the heater core 4 into a warm air passage 5 through which air that has passed through the heater core 4 and a bypass passage 6 through which air that does not pass through the heater core 4 flow. Further, in front of the heater core 4, an air mix door 9 that rotates about a shaft 8 as a fulcrum is arranged, and the driving force of the air mix door 9 is given from the outside, and from the fully closed (full cool) position. It is designed to be rotated from to the fully open position. At the turning position of the air mix door 9, the warm air passage 5
The flow rate ratio of air passing through the bypass passage 6 and the bypass passage 6 is determined, and the respective air is mixed in the air mix space 10 to a desired temperature and blown out to the air-conditioned space. In addition, in FIG. 1, the air mix door 9 is set to the full cool position.

Reference numeral 12 is a sub door provided behind the heater core 4, which is rotated in conjunction with the air mix door 9 so as to be closed during a full cool and opened during a full hot. . Further, reference numeral 13 is a cold air bypass passage of a cold air bypass device (the explanation is omitted).

Behind the heater core 4 and at the outlet 3 of the conditioned air, there is provided a variable door 15 as a switching door which is rotated in conjunction with an air mix door 9 as a main drive door.

The variable door 15 is rotatably provided on a shaft 16 and is rotated in conjunction with the air mix door 9. The variable door 15 is constructed by sticking a soft foam urethane 18 to the outer surface of a flat plate 17 having a desired shape made of a hard resin, and the flat plate 17 has a direction away from the axis (longitudinal slot 20 in the vertical direction). An opening hole 21 is formed which is formed and opens at a side end connected to the elongated hole 20.

On the outer surface (opposite to the main drive door) of the flat plate 17, a leaf spring 21 of an elastic member is attached along the elongated hole 20, and is attached to the flat plate by a fixture 22 such as a hecket at its base. ing. A connecting portion 23 is attached to the tip of the leaf spring 21 and an engaging hole 24 is formed therein. A rod 25 described below is inserted into the engaging portion 24. The urethane 18 is provided to prevent air from leaking through the elongated hole 20.

The rod 26 has its base portion rotatably connected to a lever 25 fixed to the air mix door 9, and the other end thereof is inserted into a long hole through a flat plate opening hole 19 of the variable door 15, and its The tip is inserted into the engaging hole 24 of the connecting portion 23 and is connected to the connecting portion 23. In addition, 27 is a stopper that regulates the moving position of the variable door 15, and is a stopper of the air conditioning case 1.
In the air mix space 10, the fulcrum of the air mix door 9
Is provided substantially below the position where the shaft 16 is attached.
It

The rotation of the air mix door 9 and the variable door 15 in the above structure will be described with reference to FIGS.

When the setting mode is full cool, as shown in FIGS. 1 and 5, the air mix door 9 is in a fully closed state, and the variable door 15 rotated through the connecting structure is set horizontally. . When the air mix door 9 is rotated from this state toward the hot state, the variable door 15 rotated via the rod 26 shifts from the horizontal state to the vertical state.

When the rotation of the air mix door 9 progresses and, for example, the setting mode is set to the 1/2 hot state,
As shown in FIG. 2 and FIG. 5, the variable door 1 in which the air mix door 9 is maintained in a substantially horizontal state and rotates in conjunction with this
5 comes into contact with the stopper 27 to stop the movement and is set to be substantially vertical. In this state, since the variable door 15 is vertical, the cold air passing through the bypass passage 6 impinges on the variable door 15 and is deflected to promote mixing with the warm air .

When the setting mode is full hot, as shown in FIGS. 3 and 5, the air mix door 9 is in a fully open state, but from the 1/2 hot state, the variable door 15 is moved by the stopper 27. Since it is regulated, the variable door 15 remains in the vertical state. At this time, the driving force transmitted from the air mix door 9 through the rod 26 presses the leaf spring 21 and bends as shown in FIG. 3, and the driving force is absorbed.

When the air mix door 9 is returned from the full hot state to the full cool state, it changes from FIG. 3 to FIG. 2 as shown in FIG. That is, the leaf spring 21 is returned by the movement of the rod 26 until the leaf spring 21 is attached to the variable door 15. Then, the movement of the variable door 15 starts (the air mix door 9 moves 1/2), and thereafter, in conjunction with the air mix door 9, the variable door 15 is returned from the vertical state to the horizontal state.

As described above, the leaf spring 21 as an elastic member is interposed between the elements of the connecting structure for connecting the air mix door 9 and the variable door 15, and the stopper 27 for restricting the variable door 15 at a desired stop position. By providing the above, it is possible to appropriately set a door operation schedule in which the stop position of the variable door 15 serving as a switching door is arbitrarily stopped at a predetermined opening or more of the air mix door 9 serving as a main drive door, and thus it is versatile. A switching door connection structure is provided.

Further, by changing the connecting structure of the switching door, for example, the length of the rod 26, it is possible to easily change the door operation schedule with a simple structure, and also to reduce the cost and the installation space. It is possible.

In this connection structure of the switching door, the leaf spring 21 is used as the elastic member which is a constituent element thereof, but the invention is not limited to this, and any elastic member such as a rod-shaped elastic body or the like can be used. Similar effects can be obtained by using a resin or the like.

[0023]

As described above, according to the present invention,
Since the elastic member is interposed in the element of the connecting structure for connecting the main drive door and the switching door, and the stopper for restricting the switching door at the desired stop position is provided, the stop position of the switching door is opened by the predetermined opening of the main drive door. If the elastic member bends more than a certain degree and absorbs the driving force, the door operation schedule can be appropriately set such that the elastic member absorbs the driving force and can stop arbitrarily in cooperation with the stopper, thus providing a versatile switching door connection structure. It Further, with such a switching door connection structure, it is possible to easily change the door operation schedule with a simple configuration, and it is possible to reduce the cost and the installation space.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the states of a main drive door and a switching door at the time of full cooling.

FIG. 2 is a diagram illustrating a state of a main drive door and a switching door at the time of 1/2 hot.

FIG. 3 is a diagram illustrating a state of a main drive door and a switching door at the time of full hot.

FIG. 4 is a perspective view illustrating a connection state of a switching door and a rod.

FIG. 5 is a graph showing the opening state of the switching door with respect to the setting mode of the air mix door.

FIG. 6 is a view showing a connecting structure of a conventional switching door.

[Explanation of symbols]

4 Heater core 9 Air mix door (main drive door) 15 Variable door (switching door) 25 Lever 26 Rod 27 Stopper

Claims (1)

[Scope of utility model registration request] 1. A connecting structure for a switching door, in which a force is transmitted from a main driving door through a rod and is rotated about an axis as a fulcrum, wherein a base portion of an elastic member is provided on a side surface of the switching door opposite to the main driving door. An air conditioner for a vehicle, which is fixed, has one end of the rod connected to the tip of the elastic member, and has a stopper for restricting the movement of the switching door at a predetermined position in the air mix space of the air conditioning case. Connection structure of switching door.