Shell assembly and automotive active air-inlet grille actuator comprising same

Abstract

The shell assembly comprises a shell body and a shell cover which are mutually covered to form a cavity, a retainer is installed on the surface of the shell cover located in the cavity, the retainer is provided with a shaft hole for one or more gear shafts to penetrate through, an oil injection hole is formed in the periphery of the shaft hole, and the oil injection hole is communicated with the shell body. A gear shaft for mounting a gear set is fixed on the shell cover; and the gear shaft mounted between the retainer and the shell cover is in clearance fit with the shaft hole. According to the utility model, the gears are arranged compactly, the structure is simple, the coaxiality of the gear set is high, and the meshing precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive intake grille design, in particular to a housing assembly and a vehicle active intake grille actuator including the same, which includes an actuator for providing driving force and connected to the main controller LIN of the self-regulating intake grille system. Background Art

[0002] The main function of the automotive intake grille is to provide an intake passage for the automotive engine or battery pack to facilitate timely heat dissipation of the vehicle. When the engine or battery pack is overheated and natural wind alone cannot dissipate heat sufficiently, the fan will automatically start to assist in heat dissipation. During vehicle driving, the air flows backward, and the airflow direction of the fan is also opposite. The automotive intake grille will provide an intake passage for the vehicle to allow external air to enter the vehicle body and form a passage. The heated airflow after heat dissipation flows backward from behind the engine or battery pack and the bottom of the vehicle body, thereby discharging the heat.

[0003] Currently, more intake grilles on the market use three-slot or six-slot special-shaped iron cores, allowing the gear shaft to pass through the iron core to achieve complete fixation between the housing and the cover. However, the torque output of the three-slot or six-slot special-shaped iron cores is relatively small, and the expandability is weak. If a nine-slot iron core with a larger output torque is used, due to the too large volume of the stator, part of the gear shaft cannot be designed to be completely fixed between the housing and the cover, or gear shaft holes need to be provided on the end face of the stator, resulting in complex processes.

[0004] Therefore, it is necessary to design an intake grille actuator that can output a large torque and has a simple assembly process. Summary of the Utility Model

[0005] In order to solve the technical problems in the prior art that the automotive intake grille has a small output torque or due to space limitations, part of the gear shaft cannot be designed to be completely fixed between the housing and the cover, the utility model provides a housing assembly and a vehicle active intake grille actuator including the same to solve the above problems.

[0006] The utility model provides a housing assembly, which includes a housing and a cover that are mutually covered to form a cavity. A cage is installed on the surface of the cover located in the cavity. The cage has shaft holes for installing one or more gear shafts. A gear shaft for installing a gear set is fixed on the cover, and the gear shaft installed between the cage and the cover is in clearance fit with the shaft hole.

[0007] Furthermore, the cover is provided with gear holes that are in interference fit with the gear shaft.

[0008] Furthermore, an oil injection hole is provided on the periphery of the shaft hole.

[0009] Furthermore, at least two fixing holes for installing with the cover are provided on the outer edge of the cage.

[0010] Further, the cover has convex columns corresponding to the fixing holes, and the pin columns at the tops of the convex columns are inserted into the fixing holes and thermally riveted and fixed to the fixing holes.

[0011] Further, the number of shaft holes on the cage is 2 to 4.

[0012] Further, the number of fixing holes on the cage is 3 to 4.

[0013] Further, one or more mounting holes are provided on the housing, and the gear shaft installed between the housing and the cover is in clearance fit with the mounting holes.

[0014] Further, the shaft hole is a counterbore with one end closed towards the housing.

[0015] The present utility model also provides one, which includes the above-mentioned housing assembly and a stator assembly, a rotor assembly, a gear set and a circuit board located in the cavity of the housing assembly.

[0016] Further, the stator assembly adopts a nine-slot stator core.

[0017] The beneficial effects of the present utility model are:

[0018] (1) In the present utility model, the gears are arranged compactly, the structure is simple, the coaxiality of the gear set is high, and the meshing accuracy is high.

[0019] (2) The present utility model can adopt a nine-slot stator core with a relatively large output torque, so that external air can quickly enter the vehicle to accelerate the heat dissipation of the vehicle and meet the heat dissipation requirements of the vehicle intake grille. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 is an exploded view of the specific embodiment of the vehicle active intake grille actuator of the present utility model;

[0022] Figure 2 is a top view of the housing in the present utility model;

[0023] Figure 3 is a perspective view of the cage in the present utility model (observed from the side facing the housing);

[0024] Figure 4 is a perspective view of the cage in the present utility model (observed from the side facing the cover);

[0025] Figure 5 is a schematic internal structure view of the cover in the present utility model;

[0026] Figure 6 It is an assembly schematic diagram of the shell cover, cage and two-stage gears in the present utility model;

[0027] Figure 7 It is an assembly schematic diagram of the shell cover, cage and all gears in the present utility model.

[0028] In the figure, 1 is the housing, 101 is the mounting hole, 102 is the guiding and positioning hole, 2 is the shell cover, 201 is the gear hole, 202 is the convex column, 203 is the guiding column, 204 is the abutting column, 3 is the cage, 301 is the oil injection hole, 302 is the fixing hole, 303 is the first-stage shaft hole, 304 is the second-stage shaft hole, 4 is the stator assembly, 5 is the rotor assembly, 6 is the gear set, 7 is the circuit board, 8 is the first-stage gear, 9 is the second-stage gear, 10 is the third-stage gear, 11 is the fourth-stage gear, 12 is the fifth-stage gear, 13 is the gear shaft, 14 is the pin column, 15 is the convex table surface, and 16 is the output shaft. Specific embodiments

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0030] As Figure 1 shown, the vehicle active intake grille actuator mainly includes a housing assembly and a stator assembly 4, a rotor assembly 5, a gear set 6 and a circuit board 7 installed in the housing assembly. The gear set 6 transmits the rotational movement of the rotating shaft of the rotor assembly 5 to the output shaft 16 through multi-stage gears. The housing assembly generally includes a housing 1 and a shell cover 2 that cover each other. When the size of the stator assembly 4 is small, for example, the stator assembly 4 uses a special-shaped iron core with three slots or six slots, there is more internal space in the housing assembly, and the gear shafts 13 for installing each stage of gears in the gear set 6 can be completely fixed by the housing 1 and the shell cover 2. However, when the size of the stator assembly 4 is large, for example, the stator assembly 4 uses a nine-slot stator iron core, the stator assembly 4 will occupy a large amount of internal space in the housing assembly, and it is impossible to fix each gear shaft 13 by the housing 1 and the shell cover 2. Therefore, a cage 3 needs to be added inside the housing assembly to reduce the axial length of some gear shafts 13.

[0031] In the prior art, this part of the gear shaft 13 is fixed to the cage 3, and then the cage 3 is fixed to the housing cover 2. The housing cover 2 has no positioning effect on the gear shaft 13. As two independently manufactured components, the cage 3 and the housing cover 2 need to ensure the accurate position of the gear shaft 13 on the cage 3 and the accurate fixing position of the cage 3 and the housing cover 2 simultaneously in order to ensure the precise fit between the gears at all levels. In the actual operation process, such a technological process is difficult to achieve the ideal accuracy requirements, resulting in poor meshing effect between the gears at all levels, large meshing noise, and low actuator efficiency.

[0032] The present utility model mainly improves the structure of the housing assembly, especially the housing cover 2 and the cage 3. By changing the installation method of the gears, the meshing accuracy between the gears at all levels is improved. It should be noted that the present utility model can significantly exhibit higher actuator efficiency and better space utilization rate in the actuator with a nine-slot stator core. However, those skilled in the art should understand that the housing assembly described in the present utility model is also applicable to the actuators with any other form of stator assembly 4. The following specifically introduces the structure of the housing assembly described in the present utility model for the gear set 6 structure meshed by the five-stage gear 12.

[0033] As Figures 2 - 6 shown, a housing assembly includes a housing 1 and a housing cover 2 that are mutually covered to form a cavity. A cage 3 is installed on the surface of the housing cover 2 located in the cavity. The cage 3 has shaft holes for one or more gear shafts 13 to pass through. The gear shaft 13 for installing the gear set 6 is fixed on the housing cover 2. The gear shaft 13 installed between the cage 3 and the housing cover 2 is in clearance fit with the shaft holes. An oil injection hole 301 can be provided around the shaft holes for lubricating the gear shaft 13.

[0034] Compared with the prior art, the present utility model fixes the gear shaft 13 to the gear hole 201 on the housing cover 2. The positions of all the gear shafts 13 are directly determined by the housing cover 2. The cage 3 and the housing 1 only play a role in stably supporting the other end of the gear shaft 13. When manufacturing the housing cover 2, as long as the positions of each gear hole 201 are accurately positioned, the meshing accuracy of the gears at all levels can be ensured. Therefore, the meshing accuracy is higher.

[0035] As Figure 1 shown, the gear set 6 includes a first-stage gear 8, a second-stage gear 9, a third-stage gear 10, a fourth-stage gear 11, and a fifth-stage gear 12 that are sequentially meshed. The corresponding gear shafts 13 are the first-stage gear shaft, the second-stage gear shaft, the third-stage gear shaft, and the fourth-stage gear shaft respectively. Among them, the fifth-stage gear 12 is installed on the output shaft 16. The first-stage gear shaft meshes with the output gear of the rotor assembly 5, and the fifth-stage gear 12 is connected to the output shaft 16.

[0036] The number of shaft holes on the retainer 3 is preferably 2 to 4. In the specific implementation of the utility model, the primary gear shaft and the secondary gear 9 are installed between the retainer 3 and the shell cover 2, and the remaining gears are installed between the shell cover 2 and the housing 1 (such as Figure 7 As shown in FIG. 1 , the two shaft holes on the retainer 3 are divided into a primary shaft hole 303 for matching with the primary gear shaft and a secondary shaft hole 304 for matching with the secondary gear shaft. The gear shaft 13 and the shell cover 2 can be welded or integrally formed. The utility model is provided with a gear hole 201 on the shell cover 2 that is interference-fitted with the gear shaft 13. Figure 5 As shown, the housing cover 2 is provided with four gear holes 201 and a hole for mounting the output shaft. Correspondingly, the housing 1 is provided with one or more mounting holes 101, and the gear shaft 13 installed between the housing 1 and the housing cover 2 is loosely matched with the mounting holes 101. Figure 2 As shown, two mounting holes 101 and a hole for mounting the output shaft are provided on the housing 1. The shaft hole is preferably a countersunk hole, that is, the end facing the housing 1 is not connected, and only the end facing the housing cover 2 is connected.

[0037] The fixing of the retaining frame 3 and the shell cover 2 may be, but is not limited to, the following structures: Figures 4 - 6 As shown, the outer edge of the retainer 3 is provided with at least two fixing holes 302 for mounting with the shell cover 2, and the shell cover 2 is provided with a corresponding mounting structure, such as screw connection or riveting, etc. In the utility model, the shell cover 2 has a boss 202 corresponding to the fixing hole 302, and the boss 202 is a stepped structure, and the top of the boss 202 has a pin 14 with a smaller diameter, and a boss surface 15 for supporting the retainer 3 is formed at the lower end of the pin 14. The pin 14 at the top of the boss 202 is inserted into the fixing hole 302 and fixed with the fixing hole 302 by hot riveting. In order to ensure the stability of the fixing of the retainer 3, the number of the fixing holes 302 is preferably 3 to 4. In the specific embodiment of the utility model, the number of the fixing holes 302 is three.

[0038] The shell 1 and the shell cover 2 are fixed by screws. To ensure the accuracy of the installation position, at least two guide positioning holes 102 are preferably provided on the shell 1, and a guide column 203 suitable for inserting into the guide positioning holes 102 is provided on the shell cover 2, so as to further strengthen the axial position of the two ends of the gear shaft 13 on the shell 1 and the shell cover 2. Figure 5 Two guide posts 203 are provided in the housing cover 2 shown.

[0039] In addition, the housing cover 2 is also provided with abutting posts 204 for abutting against the surface of the circuit board 7. The circuit board 7 is first mounted on the stator assembly 4, fixedly connected to the stator assembly 4 through the fisheye terminal, and then further firmly fixed through the abutting posts 204 to prevent the circuit board 7 from axial movement. Among them, the abutting posts 204, the protruding posts 202 and the guide posts 203 are all arranged close to the edge of the housing cover 2, and do not affect the installation of the gear.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "inner", "outer", "axial", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0041] In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In this specification, the schematic expression of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments.

[0043] Based on the above inspiration from the ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A housing assembly, comprising a housing and a housing cover which are mutually covered to form a cavity, wherein a retaining frame is installed on the surface of the housing cover located in the cavity, characterized in that: The retaining frame has an axial hole for installing one or more gear shafts, and the shell cover is fixed with a gear shaft for installing the gear set. The gear shaft installed between the retaining frame and the shell cover is clearance-matched with the axial hole.

2. The housing assembly according to claim 1, characterized in that: The shell cover is provided with a gear hole which is interference fit with the gear shaft.

3. The housing assembly according to claim 1, wherein: An oil filling hole is arranged on the periphery of the shaft hole.

4. The housing assembly according to claim 1, wherein: The outer edge of the retaining frame is provided with at least two fixing holes mounted with the shell cover.

5. The housing assembly according to claim 4, characterized in that: The shell cover is provided with a convex column corresponding to the fixing hole, and a pin column on the top of the convex column is inserted into the fixing hole and fixed to the fixing hole by hot riveting.

6. The housing assembly according to claim 4, characterized in that: The number of fixing holes on the retaining frame is 3 to 4.

7. The housing assembly according to claim 1, characterized in that: The housing is provided with one or more mounting holes, and the gear shaft installed between the housing and the housing cover is clearance-matched with the mounting holes.

8. The housing assembly according to claim 1, characterized in that: The axial hole is a countersunk hole closed toward one end of the housing.

9. An active air intake grille actuator for a vehicle, characterized in that: It comprises the housing assembly as claimed in any one of claims 1 to 8 and a stator assembly, a rotor assembly, a gear set and a circuit board located in the cavity of the housing assembly, wherein the gear on the rotating shaft of the rotor assembly meshes with the gear installed in the retaining frame, and drives the output shaft to rotate through the gear set.

10. The vehicle active air intake grille actuator according to claim 9, characterized in that: The stator assembly adopts a nine-slot stator core.

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