Lateral sealing spiral damper unit

Abstract

A side-sealed spiral damper unit comprises: a damper movably arranged between a distribution box housing and a middle partition of an automobile air conditioner, and a damper rocker arm passing through the distribution box housing and connected to the damper. The damper is subjected to force and compression in the direction of motion during rotation, i.e., the axial direction of the damper rotation. The sealing direction of the damper is changed from the rotation direction to the end face direction through a spiral structure, so as to be applied to the layout of a small distribution box space.

Description

Technical Field

[0001] The invention relates to a technology in the field of air conditioning, in particular to a side-sealed spiral damper unit. Background Art

[0002] The most commonly used damper systems in existing automotive air conditioners are based on the direction of the damper's rotation and the sealing of the air outlet by overpressure at a certain angle. This type of structure can function well in most areas, but the air outlets are usually located at both ends of the air conditioning box, with fan-shaped or square openings. When using conventional dampers, the overall space occupancy of the damper is relatively large, which will hinder the flow channel, affect the ventilation area, and thus affect the performance. At the same time, because the damper is long, the requirements for damper molding and subsequent quality control are high, and the damper often leaks due to deformation problems, which may cause the damper to be not closed tightly. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention proposes a side-sealed spiral damper unit, in which the force and compression directions of the damper during rotation are both in the direction of movement, i.e., the axial direction of rotation of the damper. The sealing direction of the damper is converted from the rotation direction to the end face direction through the spiral structure, so as to be applicable to the layout of the distribution box with a smaller space.

[0004] The present invention is achieved through the following technical solutions:

[0005] The invention comprises: a damper movably arranged between a distribution box shell and a middle partition of an automobile air conditioner, and a damper rocker arm penetrating the distribution box shell and connected with the damper.

[0006] The damper rocker arm comprises: a rocker arm body, a rocker arm buckle arranged on one side of the rocker arm body and a driving assembly arranged on the other side, wherein: the rocker arm buckle is clamped with a rocker arm fixing structure arranged on the distribution box shell.

[0007] The damper includes: a door shaft and a door plate with damper spiral limiting structures at both ends, wherein: the two damper spiral limiting structures are respectively in contact with the middle partition and the distribution box shell to realize multi-directional rotation of the damper, and the door plates are arranged on both sides of the damper, perpendicular to the door shaft and parallel to the air outlet to cover the air outlet opening area.

[0008] The door panel is provided with a soft rubber structure which matches with the flange surface on the distribution box shell to achieve sealing.

[0009] The distribution box shell and the middle partition are respectively provided with a shell spiral support structure and a middle partition spiral support structure corresponding to the damper spiral limiting structure.

[0010] The shell spiral support structure and the middle partition spiral support structure are preferably inclined structures.

[0011] Technical Effects

[0012] Compared with the prior art, the present invention realizes the conversion of the damper in different sealing directions. Through this conversion, the patency of the flow channel inside the air conditioner distribution box can be effectively improved. Because the space occupied by the traditional long damper is not required, the air volume is increased and the linear temperature rise control is better. Because the sealing direction of the design is at a vertical angle to the damper movement direction, the resistance to the damper movement caused by the wind pressure when the damper is closed is effectively avoided, and the driving force during the damper closing process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall layout diagram of the damper system of the spiral damper with lateral sealing in the embodiment;

[0014] Figure 2 for Figure 1 Explosion diagram;

[0015] Figure 3 It is a schematic diagram of the housing portion of the distribution box;

[0016] Figure 4 It is a schematic diagram of the throttle rocker arm;

[0017] Figure 5 The diagram of the air door is shown in FIG.

[0018] Figure 6 This is a schematic diagram of the damper operation;

[0019] Figure 7 It is a local enlarged schematic diagram;

[0020] Figure 8 This is an enlarged schematic diagram of the damper rocker arm matching spline;

[0021] Figure 9a , Figure 9b It is a schematic diagram of the drive components;

[0022] In the figure: distribution box shell 1, middle partition 2, damper 3, air outlet 4, door panel soft rubber 5, shell spiral support structure 6, middle partition spiral support structure 7, damper rocker arm 8, rocker arm fixing structure 9, rocker arm buckle 10, rocker arm spline 11, damper spline hole 12, damper spiral limiting structure 13, 14, door shaft 15, door panel 16, rocker arm body 17, matching pin 18, connecting rod 19, track plate 20. DETAILED DESCRIPTION

[0023] like Figure 1 and Figure 2As shown, a side-sealed spiral damper unit involved in this embodiment includes: a distribution box shell 1, a middle partition 2, a damper 3 movably arranged therebetween, and a damper rocker arm 8 passing through the distribution box shell 1 and connected to the damper 3.

[0024] like Figure 3 and Figure 4 As shown, the damper rocker arm 8 includes: a rocker arm body 17, a rocker arm buckle 10 arranged on one side of the rocker arm body 17, and a matching pin 18 connected to the driving mechanism arranged on the other side, wherein: the rocker arm buckle 10 is clamped with the rocker arm fixing structure 9 arranged on the distribution box housing 1.

[0025] like Figure 5 to Figure 7 As shown, the damper 3 includes: a door shaft 15 with damper spiral limiting structures 13, 14 at both ends and a door plate 16, wherein: the damper spiral limiting structures 13, 14 are respectively in contact with the middle partition 2 and the distribution box shell 1 to realize the multi-directional movement of the damper 3, and the door shaft 15 is fixedly connected to the door plate 16 through the middle partition spiral supporting structure 7.

[0026] like Figure 9a and Figure 9b As shown, the rocker arm body of the damper rocker arm is further connected to a driving assembly, which includes: a connecting rod 19, a track plate 20, a bracket and a motor.

[0027] The door plate 16 is provided with a soft rubber 5 which matches with the flange surface on the housing of the distribution box to achieve sealing.

[0028] like Figure 8 As shown, the damper spiral limiting structures 13, 14 are provided with damper spline holes 12 inside; correspondingly, the rocker arm body 17 is provided with splines 11, and the splines 11 cooperate with the spline holes 12 of the damper.

[0029] The multi-directional movement means that when the damper 3 is in the open and closed positions, the damper adopts rotational motion and produces axial displacement at the same time. To ensure the sealing of the damper, the displacement is the sum of the standard sealing interference and the axial clearance of the damper housing, preferably 2.5 to 4 degrees, corresponding to 1.8 to 2.2 mm, and the standard single-side housing clearance is 0.6 mm.

[0030] The distribution box housing 1 is provided with an air port 4, the shape of the door plate 16 on the damper 3 matches the air port 4, and the damper 3 is further provided with an interference fit door plate soft rubber 5 to improve the sealing performance.

[0031] like Figure 7 As shown, the distribution box shell 1 and the middle partition 2 are respectively provided with a shell spiral support structure 6 and a middle partition spiral support structure 7 corresponding to the damper spiral limiting structures 14 and 13.

[0032] The shell spiral support structure 6 and the middle partition spiral support structure 7 are both arc-shaped wedge structures, and their specific shape and structure requirements are: there are two planes at both ends of the arc-shaped wedge structure, which form a rotation angle of 5 degrees, respectively acting on the damper to rotate to the open and closed positions to lock, to avoid the angle deviation of the damper caused by the gap of the mechanism, and the arc-shaped wedge structure is determined according to the rotation angle of the damper. Assuming that the damper rotation angle is A, the arc-shaped wedge structure should subtract the locking planes at both ends as A-2*5 degrees, and assuming that the axial displacement of the damper is B, the inclination rate of the arc-shaped wedge is calculated by the rotation angle A and the axial displacement B. When the damper 4 rotates to different angles, the damper spiral limiting structures 13, 14 contact with the shell spiral structures 6, 7. Since the spiral structures 6, 7 have different displacements in the Y direction, the damper 4 moves in the Y direction when rotating.

[0033] like Figure 8 As shown, there is a clearance fit between the damper 3 and the damper rocker arm 8, and the preferred design clearance should be 0.05-0.1 mm on one side.

[0034] The specific working process of this device is as follows: the external driving mechanism drives the rocker arm 8 to perform rotational motion through the motor, mode plate, connecting rod and other parts, and the rocker arm 8 drives the damper 3 to perform the same rotational motion through the spline cooperation. At the same time, the rocker arm 8 is fixed to the rocker arm fixing structure 9 on the shell 1 through the buckle 10, so that the rocker arm 8 remains axially fixed during any movement. When the damper 3 is driven by the rocker arm 8 to perform rotational motion, spiral structures 6 and 7 are respectively provided on the shell 1 and the middle partition 2. The structure is an arc-shaped wedge, which contacts the spiral limiting structures 13 and 14 on the damper 3. Due to the structural principle of the arc-shaped wedge, the damper 3 is axially displaced at different angles. The displacement stroke causes the damper door plate 16 and the door plate soft rubber 5 to contact the shell 1, and further produce an interference fit. Due to the elastic principle of the soft rubber 5, it is a non-rigid contact, so it is deformed to achieve the sealing effect of the air outlet of the air conditioner.

[0035] The above-mentioned specific implementation can be partially adjusted in different ways by those skilled in the art without departing from the principle and purpose of the present invention. The protection scope of the present invention shall be based on the claims and shall not be limited by the above-mentioned specific implementation. Each implementation scheme within its scope shall be subject to the constraints of the present invention.

Claims

1. A side-sealed spiral damper unit, characterized in that: include: A damper movably arranged between the distribution box housing and the middle partition of the automobile air conditioner, and a damper rocker arm passing through the distribution box housing and connected to the damper; The damper comprises: a door shaft and a door plate with damper spiral limiting structures at both ends, wherein: the two damper spiral limiting structures are respectively in contact with the middle partition plate and the distribution box housing to realize the multi-directional rotation of the damper, and the door plates are arranged on both sides of the damper, perpendicular to the door shaft and parallel to the air outlet so as to cover the air outlet opening area; The distribution box shell and the middle partition are respectively provided with a shell spiral support structure and a middle partition spiral support structure corresponding to the damper spiral limiting structure. The shell spiral support structure and the middle partition spiral support structure are both arc-shaped wedge structures, specifically: two planes are respectively arranged at both ends of the arc-shaped wedge structure, which form a rotation angle of 5°, respectively acting on the damper to rotate to the open and closed positions to lock, thereby avoiding the angle deviation of the damper caused by the gap of the mechanism. The relationship between the arc-shaped wedge structure and the damper rotation angle A satisfies A-2*5°; The inclination rate of the arc wedge structure is calculated by the rotation angle A and the axial displacement B. When the damper rotates to different angles, the damper spiral limiting structures at both ends contact the corresponding shell spiral support structure and the middle partition spiral support structure respectively. Since the shell spiral support structure and the middle partition spiral support structure have different displacements in the Y direction, the damper moves in the Y direction during rotation.

2. The spiral damper unit according to claim 1, characterized in that: The damper rocker arm comprises: a rocker arm body, a rocker arm buckle arranged on one side of the rocker arm body and a driving assembly arranged on the other side, wherein: the rocker arm buckle is clamped with a rocker arm fixing structure arranged on the distribution box shell.

3. The spiral damper unit according to claim 1, characterized in that: The door panel is provided with a soft rubber structure which matches with the flange surface on the distribution box shell to achieve sealing.

4. The spiral damper unit according to claim 2, characterized in that: The driving assembly comprises: a connecting rod, a track plate, a bracket and a motor.

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