Vehicle air conditioning device

Abstract

The invention provides a vehicle air conditioning device (10). A driving force transmission mechanism (22) constituting the vehicle air conditioning device (10) is provided with: a drive rod (62) connected to a drive source (20); a driven rod (64) that is engaged with the drive rod (62) and that is driven; and a rack bar (66) that meshes with the driven rod (64) and moves linearly. A first shaft (50) meshes with the rack bar (66), and a link gear (78) of the driven rod (64) meshes with the rack bar (66). Furthermore, the drive rod (62) and the driven rod (64) are rotated by the drive of the drive source (20), thereby rotating a second shaft (52) that meshes with the link gear (78), and rotating the first shaft (50) via the rack bar (66). As a result, the first and second air mixing doors (40, 42) that mesh with the first and second shafts (50, 52) slide and open and close, and the degree of opening characteristics thereof are non-linear by the engagement between a link pin (72) and a link groove (84) of the driven rod (64).

Description

technical field [0001] The present invention relates to an air conditioner for a vehicle which is mounted on a vehicle and sends air whose temperature has been adjusted by a heat exchanger into a vehicle interior to adjust the temperature of the vehicle interior. Background technique [0002] Conventionally, for example, as disclosed in Japanese Patent Application Laid-Open No. 2015-110404 , a vehicle air conditioner mounted on a vehicle has a first air mix door and a second air mix door capable of sliding and displacing freely in the vertical direction inside the air conditioner casing. Air mix door. A first external gear of a first shaft meshes with the first air mix door, a second internal gear of a second shaft meshes with the second air mix door, and the first internal gear of the first shaft The second external gears of the second shaft are respectively meshed with ends of bar-shaped racks provided at an inclination. [0003] Moreover, by rotating the first shaft, th...

AI Technical Summary

Problems solved by technology

[0007] However, in the case of using the link mechanism of the vehicle air conditioner disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2007-168619 to control the two first and second air mixing doors, it is necessary to reserve in advance for two The space for the range of action of the swing action of the root action rod, so that other components cannot be arranged in this space

Therefore, it is necessary to provide a large space outside the air conditioner casing in which the link mechanism is installed, resulting in an increase in the size of the vehicle air conditioner.

[0008] On the other hand, when the two first air mix doors and the second air mix door start to open from the fully closed state close to each other, the air passes between the first air mix door and the other second air mix door and suddenly When the ground flows to the downstream side, the temperature change of the air increases, so the change in the temperature of the air sent into the vehicle compartment increases.

[0009] In addition, similarly, when the first air mix door and the second air mix door start to close from the fully open state where they are separated from each other, cold air flows rapidly downstream through the space between the first air mix door, the second air mix door and the air conditioner casing. side, therefore, the change in the temperature of the supply air sent into the cabin will increase

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