A front and rear blowing surface control mechanism for automobile air conditioner

Abstract

The invention discloses a front and rear blowing surface control mechanism of an automobile air conditioner, comprising a driving motor, wherein the output shaft of the driving motor is connected to a mode plate, the mode plate is provided with a front blowing surface air door track groove, a front blowing surface air door rocker arm can rotate around a rocker arm shaft, a first end of the front blowing surface air door rocker arm is provided with a rocker arm lever matched with the front blowing surface air door track groove, a second end of the front blowing surface air door rocker arm is rotationally connected with a first end of a front blowing surface air door connecting rod, a second end of the front blowing surface air door connecting rod is rotationally connected with a first end of a front blowing surface air door crank, a second end of the front blowing surface air door crank is connected with a rotating shaft of the front blowing surface air door, the front blowing surface air door is provided with a rear blowing surface air door connecting rod track groove, a rear blowing surface air door is provided with a rear blowing surface air door track groove, a rear blowing surface air door connecting rod can rotate around a connecting rod shaft, and a first end and a second end of the rear blowing surface air door connecting rod are respectively provided with a rear blowing surface air door connecting rod track groove and a connecting rod lever matched with the rear blowing surface air door track groove. The invention can avoid the blowing surface air door from generating noise, and also greatly reduce the production cost.

Description

Technical Field

[0001] The invention relates to a front and rear blowing surface control mechanism for an automobile air conditioner. Background Art

[0002] The front and rear blowing surfaces of the existing air conditioning box are mainly achieved by the following two methods:

[0003] Solution 1: The front and rear blowing surfaces are controlled by a damper, and the rear blowing surface changes its angle through the blowing damper to adjust the air supply ratio;

[0004] Solution 2: Use two front and rear air doors, each controlled by an independent motor. The motor drives the corresponding air door to change the opening, thereby adjusting the air supply ratio.

[0005] If the front and rear blowing surfaces adopt the design of Plan 1, the blowing surface damper needs to be set at the intersection of the front blowing surface air outlet and the rear blowing surface air outlet. When the airflow flows through the gaps on both sides of the damper, it is very easy to generate noise and howling, affecting the passenger comfort.

[0006] If the front and rear blowing surfaces adopt the second design, blowing surface dampers are respectively set at the front blowing surface air outlet and the rear blowing surface air outlet, which means that the front and rear blowing surfaces are independently controlled. This can avoid noise, but a separate drive motor needs to be added, which will not only require more space but also increase the cost a lot. Summary of the invention

[0007] Purpose of the invention: The purpose of the invention is to provide a front and rear blowing surface control mechanism for an automobile air conditioner, so that the same motor can drive the two front and rear blowing surface dampers.

[0008] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a front and rear blowing surface control mechanism of an automobile air conditioner, including a front blowing surface air door, a rear blowing surface air door, a driving motor, and also including a mode plate, a front blowing surface air door rocker arm, a front blowing surface air door connecting rod, a front blowing surface air door crank, and a rear blowing surface air door connecting rod;

[0009] The output shaft of the driving motor is connected to the mode plate, the mode plate is provided with a front blowing face air door track groove, the middle part of the front blowing face air door rocker arm is installed on the rocker arm shaft and can rotate around the rocker arm shaft, the first end of the front blowing face air door rocker arm is provided with a rocker arm lever, the rocker arm lever cooperates with the front blowing face air door track groove, the second end of the front blowing face air door rocker arm is rotatably connected to the first end of the front blowing face air door connecting rod, the second end of the front blowing face air door connecting rod is rotatably connected to the first end of the front blowing face air door crank, and the second end of the front blowing face air door crank is rotatably connected to the The front blowing face air door is connected to the rotating shaft, a rear blowing face air door connecting rod track groove is provided on one side of the front blowing face air door, a rear blowing face air door track groove is provided on one side of the rear blowing face air door, the middle part of the rear blowing face air door connecting rod is installed on the connecting rod shaft and can rotate around the connecting rod shaft, the first end and the second end of the rear blowing face air door connecting rod are respectively provided with connecting rod levers, the connecting rod lever at the first end of the rear blowing face air door connecting rod cooperates with the rear blowing face air door connecting rod track groove, and the connecting rod lever at the second end of the rear blowing face air door connecting rod cooperates with the rear blowing face air door track groove.

[0010] Furthermore, the output shaft of the driving motor is splined with the shaft hole in the center of the mode plate, and a limiting mechanism is provided on the mode plate and the output shaft of the motor to limit the rotation angle of the mode plate.

[0011] Furthermore, a guide hole is provided at the bottom of the front blowing face air door trajectory groove, and when the front blowing face air door rotates to a set position, the guide hole coincides with the position of the rocker arm lever.

[0012] Furthermore, the sides of the front blowing surface damper connecting rod and the rear blowing surface damper connecting rod are both provided with reinforcing ribs.

[0013] Furthermore, a spline shaft is provided at the second end of the front blowing damper crank, the spline shaft cooperates with the spline hole at the end of the rotating shaft of the front blowing damper, and the spline shaft and the spline hole are provided with an axial locking mechanism to prevent the spline shaft from escaping from the spline hole.

[0014] Furthermore, a serrated rubber strip is provided on the edge of the front blowing surface damper.

[0015] Furthermore, the rocker arm shaft is arranged on the side plate of the air-conditioning box, and the side plate of the air-conditioning box is also provided with a front blowing damper rocker arm supporting rib near the rocker arm shaft.

[0016] Furthermore, the connecting rod shaft includes a cylindrical shaft body, a side surface of the shaft body has a through notch, and an elastic barb is provided in the notch.

[0017] Furthermore, the connecting rod shaft is arranged on a partition in the air-conditioning box, and the partition in the air-conditioning box is also provided with a rear-blowing damper connecting rod supporting rib, and the rear-blowing damper connecting rod supporting rib is circumferentially arranged around the connecting rod shaft.

[0018] Compared with the traditional solution, the present invention adopts a driving motor to drive the front and rear air doors, which can avoid the noise generated by the blowing air door and greatly reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the mode disk.

[0021] Figure 3 It is a schematic diagram of the structure of the front blowing door connecting rod.

[0022] Figure 4 It is a schematic diagram of the connection structure between the front blowing face air door crank and the front blowing face air door.

[0023] Figure 5 It is a structural diagram of the rocker shaft.

[0024] Figure 6 It is a schematic diagram of the connection structure between the connecting rod shaft and the rear blowing surface connecting rod.

[0025] In the figure: 1. mode plate; 2. front blowing face air door rocker arm; 3. front blowing face air door connecting rod; 4. front blowing face air door crank; 5. front blowing face air door; 6. rear blowing face air door connecting rod; 7. rear blowing face air door; 8. front blowing face air door track groove; 9. rear blowing face air door connecting rod track groove; 10. rear blowing face air door track groove; 11. limiting protrusion; 12. guide hole; 13. reinforcing rib; 14. spline shaft; 15. spline hole; 16. elastic hook; 17. slot; 18. serrated soft rubber; 19. rocker arm shaft; 20. air conditioning box side panel; 21. front blowing face air door rocker arm support rib; 22. connecting rod shaft; 23. air conditioning box middle partition; 24. rear blowing face air door connecting rod support rib; 25. elastic barb. DETAILED DESCRIPTION

[0026] The present invention will be further explained below in conjunction with the accompanying drawings.

[0027] like Figure 1 , 2 As shown in Figures 5 and 6, a front and rear blowing surface control mechanism of an automobile air conditioner of the present invention includes a front blowing surface damper 5, a rear blowing surface damper 7, a driving motor (not shown in the figure), and also includes a mode plate 1, a front blowing surface damper rocker arm 2, a front blowing surface damper connecting rod 3, a front blowing surface damper crank 4, and a rear blowing surface damper connecting rod 6.

[0028] The output shaft of the driving motor is connected to the mode plate 1, and the mode plate 1 is provided with a front blowing face air door track groove 8. The middle part of the front blowing face air door rocker arm 2 is installed on the rocker arm shaft 19 and can rotate around the rocker arm shaft 19. The first end of the front blowing face air door rocker arm 2 is provided with a rocker arm lever, and the rocker arm lever cooperates with the front blowing face air door track groove 8. The second end of the front blowing face air door rocker arm 2 is rotatably connected to the first end of the front blowing face air door connecting rod 3, and the second end of the front blowing face air door connecting rod 3 is rotatably connected to the first end of the front blowing face air door crank 4, and the second end of the front blowing face air door crank 4 is rotatably connected to the front blowing face air door connecting rod 3. The front blowing face damper 5 is connected to the rotating shaft, a rear blowing face damper connecting rod track groove 9 is provided on one side of the front blowing face damper, and a rear blowing face damper track groove 10 is provided on one side of the rear blowing face damper. The middle part of the rear blowing face damper connecting rod 6 is installed on the connecting rod shaft 22 and can rotate around the connecting rod shaft 22. The first end and the second end of the connecting rod of the rear blowing face damper 6 are respectively provided with connecting rod levers. The connecting rod lever at the first end of the rear blowing face damper connecting rod 6 cooperates with the rear blowing face damper connecting rod track groove 9, and the connecting rod lever at the second end of the rear blowing face damper connecting rod 6 cooperates with the rear blowing face damper track groove 10.

[0029] During operation, the driving motor drives the mode plate to rotate, and the rocker arm lever at the first end of the front blowing face damper rocker arm 2 slides along the front blowing face damper track groove 8. The front blowing face damper track groove 8 is designed according to the required rotation angle of the front blowing face damper 5. The front blowing face damper track groove 8 applies a force to the lever, thereby driving the front blowing face damper rocker arm 2 to rotate around the rocker arm shaft 19. The front blowing face damper rocker arm 2 then drives the front blowing face damper 5 to rotate to the set position through the front blowing face damper connecting rod 3 and the front blowing face damper crank 4. Similarly, during the rotation of the front blowing face damper 5, the rear blowing face damper connecting rod 6 is driven to rotate around the connecting rod shaft 22 through the rear blowing face damper connecting rod track groove 9, and then the rear blowing face damper connecting rod 6 drives the rear blowing face damper 7 to rotate to the set position. Through the rear blowing face damper track groove 10 set on the rear blowing face damper, the mode plate 1 can be controlled at different positions so that the rear blowing face damper 7 can reach the designed position.

[0030] like Figure 2 As shown, the output shaft of the driving motor is matched with the shaft hole at the center of the mode plate 1 through a spline. Specifically, the output shaft of the driving motor is provided with a spline, which is matched with the spline groove at the center of the mode plate 1. In addition, a limiting mechanism is provided on the mode plate and the motor output shaft to limit the rotation angle of the mode plate 1 to prevent the mode plate 1 from over-moving and causing mode dislocation. The limiting mechanism includes two limiting protrusions 11 arranged at an annular interval outside the shaft hole. In addition, a stopper corresponding to the limiting protrusion is provided on the motor output shaft. The maximum rotation angle of the mode plate 1 is the angle formed between the two limiting protrusions 11.

[0031] A guide hole 12 is provided at the bottom of the front blowing air door trajectory groove 8. When the front blowing air door rotates to the set position, the guide hole coincides with the position of the rocker arm lever, which is convenient for the assembly workers to calibrate the installation position of the mode plate 1 and the front blowing air door 5 to prevent misalignment.

[0032] In order to prevent the connecting rod from deforming due to stress, the sides of the front blowing damper connecting rod 3 and the rear blowing damper connecting rod 6 are both provided with reinforcing ribs 13. Figure 3 As shown, the side reinforcement ribs 13 of the front blowing surface damper connecting rod 3 are composed of triangular rib plates and oblique rib plates.

[0033] like Figure 4 As shown, the second end of the front blowing damper crank 4 is provided with a spline shaft 14, and the spline shaft 14 is matched with the spline hole 15 at the end of the rotating shaft of the front blowing damper 5, and the spline shaft 14 and the spline hole 15 are provided with an axial locking mechanism to prevent the spline shaft 14 from escaping from the spline hole 15. The axial locking mechanism includes an elastic hook 16 arranged at the end of the spline shaft 14 and a slot 17 arranged on the side of the spline hole. When the spline shaft 14 and the spline hole 15 are matched in place, the hook 16 is just inserted into the slot 17 to axially fix the spline shaft 14 and the spline hole 15.

[0034] In addition, a serrated rubber strip 18 is provided at the edge of the front blowing damper, and this structure is to eliminate the whistling produced when the damper is closed.

[0035] like Figure 5 As shown, the rocker arm shaft 19 is arranged on the air-conditioning box side panel 20, and the air-conditioning box side panel 20 is also provided with a front blowing face damper rocker arm support rib 21 near the rocker arm shaft 19. The front blowing face damper rocker arm support rib 21 provides a certain support to the front blowing face damper rocker arm 2, thereby preventing the front blowing face damper rocker arm 2 from being deformed downward due to force, thereby affecting the control accuracy of the front blowing face damper 5.

[0036] like Figure 6 As shown, the connecting rod shaft 22 includes a cylindrical shaft body, and a notch is provided on the side of the shaft body, and an elastic barb 25 is provided in the notch. The rear blowing face damper connecting rod 6 is sleeved on the connecting rod shaft 22 from top to bottom. After being installed in place, the elastic barb 25 is pressed on the upper surface of the rear blowing face damper connecting rod 6 to prevent the rear blowing face damper connecting rod 6 from being separated from the connecting rod shaft 22 due to force.

[0037] The connecting rod shaft 22 is arranged on the partition plate 23 in the air conditioning box, and the partition plate 23 in the air conditioning box is also provided with a rear blowing face damper connecting rod support rib 24, and the rear blowing face damper connecting rod support rib 24 is circumferentially arranged around the connecting rod shaft 22. The front blowing face damper rocker arm support rib 21 plays a certain supporting role on the rear blowing face damper connecting rod 6, preventing the rear blowing face damper connecting rod 6 from swinging, thereby affecting the control accuracy of the rear blowing face damper 7, and having strong reliability. In addition, in order to reduce the rotational friction between the front blowing face damper rocker arm support rib 21 and the rear blowing face damper connecting rod 6, the cross section of the front blowing face damper rocker arm support rib 21 is semicircular, so that the two maintain line contact, thereby reducing friction and eliminating noise.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A front and rear blowing surface control mechanism for an automobile air conditioner, comprising a front blowing surface damper, a rear blowing surface damper, and a drive motor, characterized in that: It also includes a mode plate, a front blowing face throttle rocker arm, a front blowing face throttle connecting rod, a front blowing face throttle crank, and a rear blowing face throttle connecting rod; The output shaft of the driving motor is connected to the mode plate, the mode plate is provided with a front blowing face air door track groove, the middle part of the front blowing face air door rocker arm is installed on the rocker arm shaft and can rotate around the rocker arm shaft, the first end of the front blowing face air door rocker arm is provided with a rocker arm lever, the rocker arm lever cooperates with the front blowing face air door track groove, the second end of the front blowing face air door rocker arm is rotatably connected to the first end of the front blowing face air door connecting rod, the second end of the front blowing face air door connecting rod is rotatably connected to the first end of the front blowing face air door crank, and the second end of the front blowing face air door crank is rotatably connected to the The front blowing face air door is connected to the rotating shaft, a rear blowing face air door connecting rod track groove is provided on one side of the front blowing face air door, a rear blowing face air door track groove is provided on one side of the rear blowing face air door, the middle part of the rear blowing face air door connecting rod is installed on the connecting rod shaft and can rotate around the connecting rod shaft, the first end and the second end of the rear blowing face air door connecting rod are respectively provided with connecting rod levers, the connecting rod lever at the first end of the rear blowing face air door connecting rod cooperates with the rear blowing face air door connecting rod track groove, and the connecting rod lever at the second end of the rear blowing face air door connecting rod cooperates with the rear blowing face air door track groove; The output shaft of the driving motor is matched with the shaft hole in the center of the mode plate through a spline, and a limiting mechanism is provided on the mode plate and the output shaft of the motor to limit the rotation angle of the mode plate; The sides of the front blowing surface damper connecting rod and the rear blowing surface damper connecting rod are both provided with reinforcing ribs.

2. The front and rear blowing surface control mechanism of an automobile air conditioner according to claim 1, characterized in that: A guide hole is provided at the bottom of the front blowing face air door track groove. When the front blowing face air door rotates to a set position, the guide hole coincides with the position of the rocker arm lever.

3. The front and rear blowing surface control mechanism of an automobile air conditioner according to claim 1, characterized in that: The second end of the front blowing damper crank is provided with a spline shaft, which cooperates with the spline hole at the end of the rotating shaft of the front blowing damper, and the spline shaft and the spline hole are provided with an axial locking mechanism to prevent the spline shaft from escaping from the spline hole.

4. The front and rear blowing surface control mechanism of an automobile air conditioner according to claim 3, characterized in that: The edge of the front blowing door is provided with a serrated rubber strip.

5. The front and rear blowing surface control mechanism of an automobile air conditioner according to claim 1, characterized in that: The rocker arm shaft is arranged on the side plate of the air conditioning box, and the side plate of the air conditioning box is also provided with a front blowing damper rocker arm supporting rib near the rocker arm shaft.

6. The front and rear blowing surface control mechanism of an automobile air conditioner according to claim 1, characterized in that: The connecting rod shaft comprises a cylindrical shaft body, a side surface of the shaft body is provided with a through notch, and an elastic barb is arranged in the notch.

7. The front and rear blowing surface control mechanism of an automobile air conditioner according to claim 6, characterized in that: The connecting rod shaft is arranged on the partition plate in the air-conditioning box, and the partition plate in the air-conditioning box is also provided with a rear-blowing air door connecting rod supporting rib, and the rear-blowing air door connecting rod supporting rib is circumferentially arranged around the connecting rod shaft.

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