Automobile HVAC assembly motor fan installation fixing structure

Abstract

The present invention discloses a motor fan installation and fixing structure for an automobile HVAC assembly. The motor fan is installed and connected to a lower shell of a volute, and is characterized in that: the motor fan is provided with a fan shell installation surface, the edge of the fan shell installation surface is provided with a clamping boss, the lower shell of the volute is provided with a mounting hole matched with the fan shell installation surface, the edge of the mounting hole is provided with a mounting notch matched to pass through the clamping boss, and the motor fan is rotated, and the clamping boss of the motor fan is clamped and limited to the lower shell of the volute. The motor fan installation and fixing structure for an automobile HVAC assembly of the present invention has a simple structure, is easy to install and fix, has a low cost, has good product performance, and has a good application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and more specifically, relates to a motor fan installation and fixing structure of an automobile HVAC assembly. Background Art

[0002] There are more and more automobile air-conditioning manufacturers now, the competitive pressure is increasing, and the requirements for the shell are getting higher and higher. Therefore, innovation in product design is carried out to reduce production costs through innovation, thereby improving the core competitiveness of the product.

[0003] In previous projects, the motor fan and the lower casing of the volute were assembled and fixed with screws. This not only required the purchase of screws, increasing costs, but also required employees to assemble them, thus reducing production efficiency and being unfavorable to product competition. Since the boss feature of the mounting hole of the self-tapping screw is higher than the plane of the casing, it may generate noise and affect the performance of the assembly. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to provide an automobile HVAC assembly motor fan installation and fixing structure which has a simple structure, is easy to install and fix, has a low cost and has good product performance.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: the provided automobile HVAC assembly motor fan installation and fixing structure, the motor fan is installed and connected on the lower shell of the volute, and is characterized in that: the motor fan is provided with a fan shell installation surface, the edge of the fan shell installation surface is provided with a clamping boss, the lower shell of the volute is provided with a mounting hole that matches the fan shell installation surface, the edge of the mounting hole is provided with a mounting groove that matches and passes through the clamping boss, and the motor fan is rotated, and the clamping boss of the motor fan is clamped and limited to the lower shell of the volute.

[0006] In order to make the above technical solution more detailed and specific, the present invention also provides the following further preferred technical solutions to obtain satisfactory practical effects:

[0007] The edge of the fan housing mounting surface is provided with a plurality of the clamping bosses which are evenly spaced, and the edge of the mounting hole is provided with a plurality of mounting notches corresponding to the plurality of the clamping bosses.

[0008] A guide boss and a limit boss are provided on the volute lower shell.

[0009] The guide boss is arranged along the rotation direction of the motor fan, and the boss height gradually increases along the installation rotation direction.

[0010] The motor fan is provided with a first limiting block which slides along the guide boss.

[0011] A limiting groove for clamping and limiting the first limiting block is provided at the end of the guide boss.

[0012] The guide boss and the limiting boss are arranged in sequence along the rotational installation direction.

[0013] The motor fan is provided with a second limit block, and when the motor fan is rotated and installed in place, the second limit block corresponds to the position of the limit boss; a limit stopper protruding to a certain height is provided at the rear end of the limit boss.

[0014] A male slot opening toward the installation direction is provided at the edge of the fan housing installation surface, and a female slot corresponding to the male slot is provided on the edge of the installation hole. Both the male slot and the female slot are U-shaped slots.

[0015] The edge of the mounting hole extends toward the center to form an extension section, the mounting notch is arranged on the extension section, and the clamping boss is formed by extending from the edge of the fan housing mounting surface toward the center.

[0016] Compared with the prior art, the present invention has the following advantages: the automobile HVAC assembly motor fan installation and fixing structure of the present invention has a simple structure, is easy to install and fix, has low cost, good product performance, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of this specification:

[0018] Figure 1 This is a schematic diagram of the installation and fixing structure of the motor fan of the automobile HVAC assembly of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the motor fan and the volute lower housing of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the motor fan and the volute lower housing of the present invention;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the motor fan installation and fixing structure of the present invention;

[0022] Figure 5 for Figure 4 Middle A is a schematic diagram of a partially enlarged structure;

[0023] Figure 6 This is a schematic diagram of the external limit matching structure of the motor fan installation fixing structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the lower shell of the volute in the present invention.

[0025] Markings in the figure are: 1, volute lower casing, 11, guide boss, 12, limit boss, 13, mounting notch, 14, female slot, 2, motor fan, 21, first limit block, 22, second limit block, 23, fan casing mounting surface, 24, snap-in boss, 25, male slot. DETAILED DESCRIPTION

[0026] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0027] The automobile HVAC assembly motor fan installation and fixing structure of the present invention is as follows: Figure 1 , 2 As shown in , 3, the motor fan 2 is installed and connected to the lower shell 1 of the volute, and the motor fan 2 is provided with a fan shell mounting surface 23, and the edge of the fan shell mounting surface 23 is provided with a clamping boss 24, and the lower shell 1 of the volute is provided with a mounting hole that matches the fan shell mounting surface 23, and the edge of the mounting hole is provided with a mounting notch 13 that matches and passes through the clamping boss 24, and the motor fan 2 is rotated, and the clamping boss of the motor fan 2 is clamped and limited to the lower shell 1 of the volute. This kind of installation and fixing structure saves installation time and improves installation efficiency.

[0028] In the present invention, Figure 2 , 3 As shown in Figures 4 and 5, the edge of the fan housing mounting surface 23 is provided with a plurality of evenly spaced snap-in bosses 24, and the edge of the mounting hole is provided with a plurality of mounting notches 13 corresponding to the plurality of snap-in bosses 24. In the rotary snap-in structure of the present invention, the edge of the mounting hole extends toward the center to form an extension section, the mounting notch 13 is provided on the extension section, and the snap-in boss 24 is formed by extending the edge of the fan housing mounting surface 23 toward the center. The snap-in bosses 24 are distributed in a serrated shape along the edge of the fan housing mounting surface 23. During installation, the snap-in bosses 24 are passed through the correspondingly arranged mounting notches 13, and the motor fan 2 is rotated along the installation rotation direction. The snap-in bosses 24 and the mounting notches 13 are correspondingly staggered, and the upper surface of the snap-in bosses 24 fits with the inner wall surface of the extension section of the volute lower housing to achieve snap-in installation.

[0029] In the present invention, Figure 1 , 6 As shown in , 7, the lower shell 1 of the volute is provided with a guide boss 11 and a limit boss 12. The guide boss 11 is arranged along the rotation direction of the motor fan 2, and its boss height gradually increases along the installation rotation direction, playing a role of rotation guide, and facilitating rotation installation. Figure 7As shown in , the motor fan 2 is provided with a first limit block 21 that slides along the guide boss. A limit groove for clamping and clamping the first limit block 21 is provided at the end of the guide boss 11 to prevent the motor fan 2 from reversing. The setting of the guide boss 11 here can also control the relative position gap between the motor fan and the lower shell of the volute in the upper and lower directions. By controlling the position and depth of the limit groove, it is ensured that the clamping boss 24 and the lower shell of the volute 1 are as closely fitted as possible after installation to reduce operating noise and improve product performance.

[0030] In the present invention, the guide boss 11 and the limit boss 12 are arranged in sequence along the rotational installation direction. A second limit block 22 is provided on the motor fan 2. When the motor fan 2 is rotated and installed in place, the second limit block 22 corresponds to the position of the limit boss 12; a limit stopper protruding to a certain height is provided at the rear end of the limit boss 12 to limit the distance the motor fan 2 rotates backward. During rotation, the rotation direction is controlled by the first limit block 21 and the guide boss 11. After installation, the first limit block 21 is snapped into the limit groove to achieve snap-on limit, and the snap-on boss 24 is matched with the inner wall surface of the volute lower shell 1 to limit the upper and lower matching clearance between the motor fan 2 and the volute lower shell 1; the second limit block 22 corresponds to the limit rod on the limit boss 12 to limit the circumferential rotation position of the motor fan 2.

[0031] In the present invention, Figure 5 As shown in , a male slot 25 opening toward the installation direction is provided on the edge of the fan housing installation surface 23, and a female slot 14 corresponding to the male slot is provided on the edge of the installation hole, and both the male slot and the female slot are U-shaped slots. During installation, the motor fan 2 is installed into the volute lower housing 1 along the installation direction, and the male slot 25 and the female slot 14 are correspondingly plugged and installed. The clamping boss 24 passes through the installation notch 14, and after rotating a certain angle, the installation notch 14 is staggered, and the installation and fixing are achieved under the action of the upper guide boss 11 and the limit boss 12. This installation and fixing structure has good stability and can achieve convenient and quick installation.

[0032] In the present invention, the motor fan 2 is fixed to the lower volute housing 1 by a rotary assembly. The motor fan 1 is combined with the lower volute housing through the installation notch 14 of the lower volute housing 1, and then rotated counterclockwise so that the snap-in boss 24 of the motor fan is snap-fitted with the boss feature on the extended edge of the lower volute housing. The present invention is provided with a guide structure, which is conducive to rotary assembly. The guide boss 11 has a gradually changing height, and its slope is very gentle, which is conducive to better rotary installation of the motor fan, so that it can be easily assembled with the lower volute housing. The limiting boss 12 limits the rotation of the motor fan 2 to prevent it from rotating beyond a predetermined position. After the motor fan rotates to a predetermined position, it is stuck in the limiting groove to prevent the motor fan from reversing.

[0033] The automobile HVAC assembly motor fan installation and fixing structure of the present invention has a simple structure, is easy to install and fix, has a low cost, has good product performance, and has a good application prospect.

[0034] The present invention is described above by way of example in conjunction with the accompanying drawings, but the present invention is not limited to the above manner. As long as various non-substantial improvements made using the method concept and technical solution of the present invention or direct applications to other occasions are made, they all fall within the protection scope of the present invention.

Claims

1. A motor fan mounting and fixing structure for an automobile HVAC assembly, wherein the motor fan is mounted and connected to a lower casing of a volute, characterized in that: The motor fan is provided with a fan housing mounting surface, the edge of the fan housing mounting surface is provided with a clamping boss, the volute lower housing is provided with a mounting hole matched with the fan housing mounting surface, and the edge of the mounting hole is provided with a mounting notch matched with the clamping boss; the edge of the fan housing mounting surface is provided with a plurality of the clamping bosses arranged evenly at intervals, and the edge of the mounting hole is provided with a plurality of mounting notches corresponding to the plurality of the clamping bosses; the volute lower housing is provided with a guide boss and a limit boss; the guide boss is arranged along the rotation direction of the motor fan, and the boss height thereof gradually increases along the installation rotation direction; the motor fan is provided with a first limit block guiding and sliding along the guide boss; a limit groove for clamping and limiting the first limit block is provided at the end of the guide boss; the guide boss and the limit boss are arranged in sequence along the rotation installation direction; the motor fan is provided with a second limit block, and when the motor fan is rotated and installed in place, the second limit block corresponds to the position of the limit boss; a limit stopper protruding to a certain height is provided at the rear end of the limit boss.

2. The automotive HVAC assembly motor fan mounting and fixing structure according to claim 1, characterized in that: A male slot opening toward the installation direction is provided at the edge of the fan housing installation surface, and a female slot corresponding to the male slot is provided on the edge of the installation hole. Both the male slot and the female slot are U-shaped slots.

3. The automotive HVAC assembly motor fan mounting and fixing structure according to claim 2, characterized in that: The edge of the mounting hole extends toward the center to form an extension section, the mounting notch is arranged on the extension section, and the clamping boss is formed by extending from the edge of the fan housing mounting surface toward the center.

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