Automobile air conditioner transmission mechanism

Abstract

A kind of automobile air conditioner transmission mechanism, left defrosting air door and right defrosting air door are installed on air outlet shell, two defrosting connecting rods are installed on two defrosting air doors by ball head link mode, the other end of two defrosting connecting rods is fixed in defrosting drive disc by ball head bayonet mode, there is shaft hole in the middle of defrosting drive disc, the positioning guide cylinder in the middle of mode disc is fixed in the middle shaft hole of defrosting drive disc, spring is sleeved on two transmission rods of mode disc, the other end of two transmission rods is fixed in defrosting drive disc by bayonet, face blowing swing lever and face blowing connecting rod are connected by ball head, face blowing connecting rod and face blowing air door are connected by ball head, the other end of face blowing swing lever is installed in mode disc by ball head, and the whole transmission mechanism is integrally installed on mode base plate by bayonet.The present application can realize the free control of three modes of blowing foot, defrosting and blowing face.

Description

Technical Field

[0001] This invention pertains to automotive air conditioning, and specifically relates to the mode transmission of automotive air conditioning (HVAC) assemblies. Background Technology

[0002] Current air conditioning drive designs mainly rely on a drive disc that drives two other non-concentric circular rocker arms via a track groove to achieve mode switching. This requires three drives in different positions. Under conditions of coaxiality and tight structure, the air conditioning drive cannot achieve three modes and can only turn on and off simultaneously. As a result, the air conditioning cannot achieve the best cooling or heating effect, affecting the overall performance of the air conditioning and passenger comfort. Summary of the Invention

[0003] The purpose of this invention is to provide an automotive air conditioning transmission structure that allows for free control of three modes: foot blowing, defrosting, and face blowing.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A transmission mechanism for an automotive air conditioning system includes a left defrost damper and a right defrost damper mounted on an air outlet housing. Two defrost connecting rods are mounted on the two defrost dampers via ball joints. The other ends of the two defrost connecting rods are fixed to a defrost drive plate via ball joint snap-fits. The defrost drive plate has a shaft hole in the middle. A positioning guide cylinder in the middle of the mode plate is fixed in the shaft hole in the middle of the defrost drive plate. Springs are fitted onto two transmission rods of the mode plate. The other ends of the two transmission rods are fixed to the defrost drive plate via snap-fits. A blowing arm and a blowing connecting rod are connected via ball joints. The blowing connecting rod and the blowing damper are connected via ball joints. The other end of the blowing arm is mounted on the mode plate via a ball joint. The entire transmission mechanism is mounted on the mode base plate via snap-fits.

[0006] The mode disc rotates counterclockwise, and the spring, starting from its initial state, pushes the defrost drive disc to run synchronously. The left and right defrost dampers, through the defrost drive disc, drive the left and right defrost linkages via spatial transmission. The defrost dampers close, and at this time, the defrost drive disc and the mode base plate just reach the defrost damper closing limit position. Simultaneously, the mode disc drives the blowing swing arm to move through the track groove. The blowing damper, connected by the blowing swing arm and the blowing linkage, opens through spatial transmission at both ends of the ball joints. The mode disc 7 stops rotating when it reaches its position, realizing the blowing mode.

[0007] In the blowing mode, the defrost drive plate is already at the limit of the mode base plate and cannot continue to rotate. At this time, the mode plate continues to rotate counterclockwise, and the spring begins to press the mode plate to run. The blowing damper is connected by the blowing swing rod and the blowing connecting rod to the ball heads at both ends and closes through spatial transmission. The mode plate runs to the position and stops rotating. At this time, the defrost blowing damper is completely closed and the foot blowing mode is turned on.

[0008] The advantages of this invention are as follows: Through the transmission action of a defrost drive disc and a mode disc, the mode disc drives the defrost drive disc, which in turn drives the defrost linkage, which in turn drives the defrost damper. The drive disc's trajectory groove drives the face-blowing swing rod, which in turn drives the face-blowing linkage, which in turn drives the face-blowing damper. By converting the tension and compression forces of the springs, the air conditioner can operate in three modes: foot blowing, defrosting, and face blowing, greatly improving the practicality of the air conditioner and increasing driving comfort. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention. Implementation

[0010] The invention will now be further described with reference to the accompanying drawings.

[0011] See Figure 1 The left defrost linkage 2 and right defrost linkage 5 are connected to the defrost drive plate 6 via ball joints. The left defrost damper 1 and right defrost damper 4 are first installed on the air outlet housing. After installation, the other end of the left defrost damper linkage 2 and right defrost linkage 5 are connected to the left and right defrost dampers via ball joints. The spring 8 is first installed on the mode plate 7, which is fitted onto the two transmission rods. Then, the center positioning guide cylinder of the mode plate 7 passes through the center shaft hole of the defrost drive plate 6. Rotating the mode plate 7, the transmission rod at the spring is installed onto the defrost drive plate 6 via the snap joint. The blowing arm 9 and the blowing linkage 10 are connected via ball joints. The blowing linkage 10 is connected to the blowing damper 11. After installation, the blowing arm 9 is installed onto the mode plate 7. Then, the parts assembled in step 2 are installed onto the mode base plate 3 as a whole via the snap joint structure.

[0012] Defrosting mode: In this mode, the left defrosting damper 2 and the right defrosting damper 4 are fully open, and the face blowing damper 11 is fully closed.

[0013] Blowing mode:

[0014] 1. The mode plate 7 rotates counterclockwise via the actuator, and the spring 8, starting from its initial state, pushes the defrost drive plate 6 to run synchronously. The left defrost damper 1 and the right defrost damper 4, through the defrost drive plate 6, drive the left defrost linkage 1 and the right defrost linkage to run via spatial transmission, closing the defrost dampers. At this time, the defrost drive plate 6 and the mode base plate 7 just reach the defrost damper closing limit position;

[0015] 2. While the mode disk 7 is running, it drives the blowing rod 9 to move through the track groove. The blowing damper 11 is connected by the blowing rod 9 and the blowing connecting rod 10. The ball heads at both ends are opened through spatial transmission. The mode disk 7 stops rotating when it reaches the position.

[0016] Foot blowing mode:

[0017] In the blowing mode, the defrost drive plate 6 is already limited to the mode base plate 7 and cannot continue to rotate. At this time, the mode plate 7 continues to rotate counterclockwise, and the spring 8 begins to press the mode plate 7 to run. The blowing air door 11 is connected by the blowing swing rod 9 and the blowing connecting rod 10. The ball heads at both ends are closed through spatial transmission. The mode plate 7 runs to the position and stops rotating. At this time, the defrost blowing air door is completely closed and the foot blowing mode is turned on.

Claims

1. A transmission mechanism for an automotive air conditioning system, comprising an air outlet housing, a defrost damper, and connecting rods, wherein a left defrost damper and a right defrost damper are mounted on the air outlet housing, and two defrost connecting rods are mounted on the two defrost dampers via ball joint connections, characterized in that: The other ends of the two defrosting linkages are fixed to the defrosting drive plate by ball joints. The defrosting drive plate has a shaft hole in the middle. The positioning guide cylinder in the middle of the mode plate is fixed in the shaft hole in the middle of the defrosting drive plate. The spring is fitted on the two transmission rods of the mode plate. The other ends of the two transmission rods are fixed to the defrosting drive plate by ball joints. The blowing rod and the blowing linkage are connected by ball joints. The blowing linkage and the blowing damper are connected by ball joints. The other end of the blowing rod is installed on the mode plate by ball joints. The entire transmission mechanism is installed on the mode base plate by ball joints.

2. The automotive air conditioning transmission mechanism according to claim 1, characterized in that: The mode disc rotates counterclockwise, and the spring, starting from its initial state, pushes the defrost drive disc to run synchronously. The left and right defrost dampers, through the defrost drive disc, drive the left and right defrost linkages via spatial transmission. When the defrost dampers close, the defrost drive disc and the mode base plate reach the defrost damper closing limit position. Simultaneously, the mode disc drives the blowing swing arm through the track groove. The blowing damper, connected by the blowing swing arm and the blowing linkage, opens through spatial transmission at both ends of the ball joints. The mode disc stops rotating when it reaches its position, thus realizing the blowing mode.

3. The automotive air conditioning transmission mechanism according to claim 2, characterized in that: In the blowing mode, the defrost drive plate is already at the limit of the mode base plate and cannot continue to rotate. At this time, the mode plate continues to rotate counterclockwise, and the spring begins to press the mode plate to run. The blowing damper is connected by the blowing swing rod and the blowing connecting rod to the ball heads at both ends and closes through spatial transmission. The mode plate runs to the position and stops rotating. At this time, the defrost blowing damper is completely closed and the foot blowing mode is turned on.

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