Automobile air conditioner air door actuator

Abstract

The utility model discloses an automobile air conditioner air door actuator which comprises an actuator shell, a motor assembly and a motor shell shock pad, the actuator shell comprises an actuator upper shell, an actuator lower shell and a shell cavity formed by the actuator upper shell and the actuator lower shell, and the motor assembly is arranged in the shell cavity and comprises a motor shell, a rotor rotating shaft and a rear cover plate. The tail end of the rear cover plate is provided with a protruding seat, the motor shell shock pad is connected between the rear cover plate and the inner wall of the shell cavity in an abutting mode, the motor shell shock pad comprises an upper semi-ring pad and a lower semi-ring pad, and a mounting hole used for being sleeved with the protruding seat is formed between the upper semi-ring pad and the lower semi-ring pad. The upper semi-ring gasket and the lower semi-ring gasket are correspondingly installed on the inner wall of the actuator upper shell and the inner wall of the actuator lower shell respectively. According to the utility model, the upper semi-ring pad and the lower semi-ring pad of the motor housing shock pad are respectively limited and installed on the inner walls of the actuator upper housing and the actuator lower housing in advance, thereby eliminating a positioning structure of the motor housing and the shock pad, and improving the application range of the motor assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning damper actuator transmission, in particular to an automobile air-conditioning damper actuator. Background Art

[0002] With the innovative development of the automobile industry, especially the rapid development of new energy, unmanned driving and other technologies, automotive electronics have been widely used and have become an important part of the vehicle. The performance of automotive electronics directly affects the power, economy, reliability, safety and comfort of the vehicle. The working principle of the automotive air-conditioning outlet actuator is as follows: the micromotor rotates at high speed after being powered on, decelerates through the gear system, and finally outputs at a certain torque and speed through the output gear, and then pushes the relevant damper through the connecting rod to realize the switch and angle conversion function of the automotive air-conditioning damper.

[0003] The air damper of the automobile air conditioner includes a stepper motor and a housing. In order to prevent the worm of the stepper motor from rotating relative to the housing, the rotating shaft of the stepper motor is rotatably connected to the housing. However, the vibration from the stepper motor is easily transmitted to the housing. This problem can be solved by setting a shock-absorbing pad between the stepper motor and the housing. The shock-absorbing pad in the prior art needs to cooperate with the stepper motor through a bump and a groove, which has certain requirements on the stepper motor structure. At the same time, when the stepper motor is installed, due to the axial compression of the shock-absorbing pad, the axial position of the stepper motor is usually offset. Summary of the invention

[0004] The embodiment of the present application provides an automobile air-conditioning damper actuator, in which the upper half ring pad and the lower half ring pad of the motor housing shock-absorbing pad are pre-positioned and installed on the inner walls of the actuator upper housing and the actuator lower housing, respectively, thereby eliminating the positioning structure of the motor housing and the shock-absorbing pad, thereby improving the application range of the motor assembly.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: an automobile air conditioner damper actuator, comprising

[0006] The actuator housing comprises an actuator upper housing, an actuator lower housing and a housing cavity formed by the actuator upper housing and the actuator lower housing;

[0007] The motor assembly is arranged inside the housing cavity, and the motor assembly includes a motor housing, a rotor shaft and a rear cover plate, and a convex seat is arranged at the rear end of the rear cover plate;

[0008] The motor housing shock-absorbing pad is abutted between the rear cover plate and the inner wall of the shell cavity. The motor housing shock-absorbing pad includes an upper half ring pad and a lower half ring pad. A mounting hole for fitting the convex seat is formed between the upper half ring pad and the lower half ring pad. The upper half ring pad and the lower half ring pad are respectively installed on the inner walls of the actuator upper housing and the actuator lower housing with corresponding limit stops.

[0009] Compared with the prior art, the advantages of the utility model are:

[0010] By pre-positioning and installing the upper half ring gasket and the lower half ring gasket of the motor housing shock-absorbing pad on the inner walls of the actuator upper housing and the actuator lower housing respectively, when the rear cover plate is connected to the actuator housing through the motor housing shock-absorbing pad, it is only necessary to make the mounting hole formed between the upper half ring gasket and the lower half ring gasket fit the convex seat set at the rear end of the rear cover plate, thereby eliminating the positioning structure of the motor housing and the shock-absorbing pad, thereby improving the application range of the motor assembly;

[0011] By splitting the motor housing shock-absorbing pad into an upper half ring pad and a lower half ring pad, the processing and manufacturing of the motor housing shock-absorbing pad is facilitated. At the same time, if a different motor component is replaced, if the size of the boss changes, only the upper half ring pad and the lower half ring pad need to be replaced, so that the mounting hole for fitting the boss formed between the upper half ring pad and the lower half ring pad is compatible with the replaced boss, further improving the applicability of the motor component.

[0012] As an improvement, an upper groove is provided on the inner wall of the upper shell of the actuator, and a lower groove is provided on the inner wall of the lower shell of the actuator corresponding to the upper groove. The upper half ring gasket is arranged inside the upper groove, and the lower half ring gasket is arranged inside the lower groove. By arranging the upper half ring gasket inside the upper groove and the lower half ring gasket inside the lower groove, the upper half ring gasket and the lower half ring gasket are limitedly installed.

[0013] As an improvement, the side wall of the upper groove near the rear cover is provided with an upper semicircular hole adapted to the shape of the upper end of the convex seat, and the side wall of the lower groove near the rear cover is provided with a lower semicircular hole adapted to the lower end of the shape of the convex seat corresponding to the upper semicircular hole. The convex seat passes through the upper semicircular hole and the lower semicircular hole, so that the upper end of the convex seat abuts against the lower end of the upper semi-ring gasket, and the lower end of the convex seat abuts against the upper end of the lower semi-ring gasket. The tail end of the rear cover abuts against the side walls of the upper and lower grooves near the rear cover, and the rear cover is passed through the rear cover. The tail end of the rear cover plate abuts against the upper groove and the lower groove near the side wall of the rear cover plate, so that the tail end of the rear cover plate is limited by the upper groove and the lower groove near the side wall of the rear cover plate in the axial direction, and the convex seat passes through the upper semicircular hole and the lower semicircular hole, so that the upper end of the convex seat abuts against the lower end of the upper semi-ring gasket, and the lower end of the convex seat abuts against the upper end of the lower semi-ring gasket, so that the convex seat is limited by the upper semi-ring gasket and the lower semi-ring gasket in the radial direction, thereby improving the stability of the motor assembly when the motor assembly is working.

[0014] As an improvement, the motor assembly also includes a first sleeve and a sheet elastic member. The motor housing includes a first end and a second end of the motor housing. The rotor shaft is rotatably installed in the motor housing. The first sleeve is supported and installed on the rotor shaft near the first end of the motor housing. The sheet elastic member is fixed to the first end of the motor housing and is adapted to the shape of the first end of the motor housing. The sheet elastic member applies elastic force to the rotor shaft through the first sleeve. The rear cover plate is arranged at the first end of the motor housing and the outer end of the sheet elastic member, and is fixed to the motor housing and the sheet elastic member as a whole. A mounting through hole is arranged at the center of the protrusion. The tail end of the first sleeve is sleeved and installed in the mounting through hole. By adding the sheet elastic member, the sheet elastic member applies an axial upward elastic force to the rotor shaft through the first sleeve, thereby providing axial support to the rotor shaft, so that the rotor shaft is strongly supported when there is no load and no power is supplied, thereby ensuring the stability of the rotor shaft during movement, thereby further improving the stability of the motor assembly during operation, and optimizing the overall abnormal noise problem of the motor assembly.

[0015] As an improvement, the motor assembly also includes a second sleeve, a worm, and a worm bracket. The second sleeve is supported and installed on the other end of the rotor shaft, the worm is fixed to the output end of the rotor shaft, and the large end of the worm bracket is fixed to the second end of the motor housing. The small end of the worm bracket is sleeved and installed on the outer periphery of the second sleeve and limited by the second sleeve. The large end of the worm bracket is fixed to the second end of the motor housing, and the small end of the worm bracket is sleeved and installed on the outer periphery of the second sleeve, thereby improving the stability of the worm during rotation.

[0016] As an improvement, the actuator also includes a worm shock-absorbing pad, a limiting through hole is arranged at the center of the worm shock-absorbing pad, and the first end of the second sleeve is installed inside the worm shock-absorbing pad so that the side wall of the limiting through hole abuts against the side wall of the first end of the second sleeve, and the front end face of the worm bracket abuts against the rear end face of the worm shock-absorbing pad. By abutting the side wall of the limiting through hole against the side wall of the first end of the second sleeve, the front end face of the worm bracket abuts against the rear end face of the worm shock-absorbing pad, the second sleeve is subjected to radial force and the worm bracket is subjected to axial force, thereby further improving the stability of the worm during rotation.

[0017] As an improvement, a limit block is provided on the inner wall of the upper shell of the actuator, and an open groove is provided on the inner wall of the lower shell of the actuator corresponding to the limit block. The worm shock-absorbing pad is arranged inside the opening groove, and the upper end of the worm shock-absorbing pad is abutted against the lower end of the limit block. By arranging the worm shock-absorbing pad inside the opening groove and abutting against the upper end of the worm shock-absorbing pad against the lower end of the limit block, the limited installation of the worm shock-absorbing pad is achieved.

[0018] As an improvement, the outer wall of the lower shell of the actuator is provided with a plurality of blocks, and the outer wall of the upper shell of the actuator is provided with a plurality of slots corresponding to the blocks, the blocks are engaged with the slots, and the upper shell of the actuator and the lower shell of the actuator are engaged with each other through the plurality of blocks and the slots, so that the upper shell of the actuator and the lower shell of the actuator are connected and tightened, and are convenient for disassembly and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is an exploded diagram of the structure of an automotive air-conditioning damper actuator;

[0021] Figure 2 This is a schematic diagram of the internal structure of the automobile air conditioning damper actuator after removing the upper shell;

[0022] Figure 3 It is a schematic diagram of the structure of the shock-absorbing pad of the motor housing;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the motor component;

[0024] Figure 5 It is a schematic diagram of the structure of a sheet elastic member;

[0025] Figure 6 It is a schematic diagram of the lower shell structure;

[0026] Figure 7 It is a schematic diagram of the upper shell structure;

[0027] Figure 8 It is a schematic diagram of the structural coordination between the upper shell and the lower shell.

[0028] The marks in the above figure are as follows: 1. actuator upper housing; 1.1. upper groove; 1.1.1. upper semicircular hole; 1.2. limit block; 1.3. slot; 2. actuator lower housing; 2.1. lower groove; 2.1.1. lower semicircular hole; 2.2. open groove; 2.3. block; 3. housing cavity; 4. motor housing; 5. rotor shaft; 6. rear cover; 6.1. boss; 6.1.1. mounting through hole; 7. first bushing; 8. sheet elastic member; 8.1. center mounting hole; 8.2. slit; 8.3. spring piece mounting positioning hole; 9. second bushing; 10. worm; 11. worm bracket; 12. motor housing shock-absorbing pad; 12.1. upper semi-ring pad; 12.2. lower semi-ring pad; 12.3. mounting hole; 13. worm shock-absorbing pad; 13.1. limit through hole. DETAILED DESCRIPTION

[0029] In the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "planar direction", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] like Figures 1 to 3 As shown, an automobile air-conditioning damper actuator comprises an actuator housing, a motor assembly, and a motor housing shock-absorbing pad 12. The actuator housing comprises an actuator upper housing 1, an actuator lower housing 2, and a housing cavity 3 formed by the actuator upper housing 1 and the actuator lower housing 2. The motor assembly is arranged inside the housing cavity 3. The motor assembly comprises a motor housing 4, a rotor shaft 5, and a rear cover plate 6. A convex seat 6.1 is arranged at the tail end of the rear cover plate 6. The motor housing shock-absorbing pad 12 abuts between the rear cover plate 6 and the inner wall of the housing cavity 3. The motor housing shock-absorbing pad 12 comprises an upper semi-ring pad 12.1 and a lower semi-ring pad 12.2. A mounting hole 12.3 for fitting the convex seat 6.1 is formed between the upper semi-ring pad 12.1 and the lower semi-ring pad 12.2. The upper semi-ring pad 12.1 and the lower semi-ring pad 12.2 are respectively mounted on the inner walls of the actuator upper housing 1 and the actuator lower housing 2 in a corresponding limit position.

[0031] The actuator also includes a worm shock-absorbing pad 13, a limiting through hole 13.1 is arranged at the center of the worm shock-absorbing pad 13, and the head end of the second shaft sleeve 9 is installed inside the worm shock-absorbing pad 13 so that the side wall of the limiting through hole 13.1 abuts against the side wall of the head end of the second shaft sleeve 9, and the front end face of the worm bracket 11 abuts against the rear end face of the worm shock-absorbing pad 13.

[0032] like Figure 4 As shown, the motor assembly also includes a first sleeve 7 and a sheet elastic member 8. The motor housing 4 includes a first end and a second end of the motor housing 4. The rotor shaft 5 is rotatably installed in the motor housing 4. The first sleeve 7 is supported and installed on the rotor shaft 5 near the first end of the motor housing 4. The sheet elastic member 8 is fixed to the first end of the motor housing 4 and is adapted to the shape of the first end of the motor housing 4. The sheet elastic member 8 applies elastic force to the rotor shaft 5 through the first sleeve 7. The rear cover plate 6 is arranged at the first end of the motor housing 4 and the outer end of the sheet elastic member 8, and is fixed to the motor housing 4 and the sheet elastic member 8 as a whole. A mounting through hole 6.1.1 is arranged at the center of the boss 6.1, and the tail end of the first sleeve 7 is sleeved and installed in the mounting through hole 6.1.1.

[0033] The motor assembly also includes a second shaft sleeve 9, a worm 10, and a worm bracket 11. The second shaft sleeve 9 is supported and installed on the other end of the rotor shaft 5. The worm 10 is fixed to the output end of the rotor shaft 5, and the large end of the worm bracket 11 is fixed to the second end of the motor housing 4. The small end of the worm bracket 11 is sleeved and installed on the outer periphery of the second shaft sleeve 9 and is limited by the second shaft sleeve 9.

[0034] like Figure 5 As shown, the sheet elastic member 8 includes a central mounting hole 8.1 for cooperating with the first sleeve 7, a plurality of slits 8.2 uniformly extending outwardly along the edge of the central mounting hole 8.1, and a spring piece mounting positioning hole 8.3 disposed near the end of the slit 8.2 and staggered with the slit 8.2, the slit 8.2 is non-radially penetrated, a plurality of mounting positioning protrusions are provided at the first end of the motor housing 4 corresponding to the spring piece mounting positioning hole 8.3, and a plurality of rear cover mounting positioning holes are provided on the rear cover plate 6 corresponding to the spring piece mounting positioning hole 8.3.

[0035] The sheet-like elastic member 8 is circular, and the length of the slit 8.2 accounts for 2 / 3 of the radius of the sheet-like elastic member 8, and the width of the slit 8.2 is 0.3-0.5 mm.

[0036] like Figure 6 to Figure 7 As shown, the inner wall of the actuator upper housing 1 is provided with an upper groove 1.1, the inner wall of the actuator lower housing 2 is provided with a lower groove 2.1 corresponding to the upper groove 1.1, the upper half ring gasket 12.1 is arranged inside the upper groove 1.1, and the lower half ring gasket 12.2 is arranged inside the lower groove 2.1.

[0037] An upper semicircular hole 1.1.1 matching the shape of the upper end of the boss 6.1 is provided on the side wall of the upper groove 1.1 close to the rear cover plate 6, and a lower semicircular hole 2.1.1 matching the shape of the lower end of the boss 6.1 is provided on the side wall of the lower groove 2.1 close to the rear cover plate 6 corresponding to the upper semicircular hole 1.1.1. The boss 6.1 passes through the upper semicircular hole 1.1.1 and the lower semicircular hole 2.1.1, so that the upper end of the boss 6.1 abuts against the lower end of the upper semi-ring gasket 12.1, the lower end of the boss 6.1 abuts against the upper end of the lower semi-ring gasket 12.2, and the tail end of the rear cover plate 6 abuts against the side walls of the upper groove 1.1 and the lower groove 2.1 close to the rear cover plate 6.

[0038] The inner wall of the actuator upper shell 1 is provided with a limit block 1.2, and the inner wall of the actuator lower shell 2 is provided with an opening groove 2.2 corresponding to the limit block 1.2. The worm shock pad 13 is arranged inside the opening groove 2.2, and the upper end of the worm shock pad 13 is against the lower end of the limit block 1.2.

[0039] like Figure 8 As shown, the outer wall of the actuator lower housing 2 is provided with a plurality of clamping blocks 2.3, and the outer wall of the actuator upper housing 1 is provided with a plurality of clamping grooves 1.3 corresponding to the clamping blocks 2.3, and the clamping blocks 2.3 are clamped with the clamping grooves 1.3.

[0040] The upper half ring washer 12.1 is arranged inside the upper groove 1.1, the lower half ring washer 12.2 is arranged inside the lower groove 2.1, the worm shock-absorbing washer 13 is arranged inside the opening groove 2.2, the boss 6.1 passes through the lower semicircular hole 2.1.1, so that the lower end of the boss 6.1 abuts against the upper end of the lower half ring washer 12.2, the tail end of the rear cover plate 6 abuts against the side wall of the lower groove 2.1 close to the rear cover plate 6, and the head end of the second sleeve 9 is installed inside the worm shock-absorbing washer 13, so that the limit through hole 13.1 The side wall abuts against the side wall of the head end of the second shaft sleeve 9, the front end face of the worm bracket 11 abuts against the rear end face of the worm shock-absorbing pad 13, and finally, when the actuator upper shell 1 is installed, the lower end of the limit block 1.2 abuts against the upper end of the worm shock-absorbing pad 13, the boss 6.1 passes through the upper semicircular hole 1.1.1, the upper end of the boss 6.1 abuts against the lower end of the upper semi-ring pad 12.1, and the tail end of the rear cover plate 6 abuts against the side wall of the upper groove 1.1 close to the rear cover plate 6, finally making the block 2.3 engage with the slot 1.3.

[0041] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An automotive air conditioner damper actuator, characterized in that: include The actuator housing comprises an actuator upper housing, an actuator lower housing and a housing cavity formed by the actuator upper housing and the actuator lower housing; A motor assembly is arranged inside the housing cavity, the motor assembly comprising a motor housing, a rotor shaft and a rear cover plate, and a convex seat is arranged at the rear end of the rear cover plate; The motor housing shock-absorbing pad is abutted between the rear cover plate and the inner wall of the shell cavity. The motor housing shock-absorbing pad includes an upper half ring pad and a lower half ring pad. A mounting hole for fitting the boss is formed between the upper half ring pad and the lower half ring pad. The upper half ring pad and the lower half ring pad are respectively installed on the inner walls of the actuator upper housing and the actuator lower housing with corresponding limit positions.

2. The automotive air conditioner damper actuator according to claim 1, characterized in that: The inner wall of the actuator upper shell is provided with an upper groove, the inner wall of the actuator lower shell is provided with a lower groove corresponding to the upper groove, the upper half ring gasket is arranged inside the upper groove, and the lower half ring gasket is arranged inside the lower groove.

3. The automotive air conditioner damper actuator according to claim 2, characterized in that: The side wall of the upper groove close to the rear cover plate is provided with an upper semicircular hole adapted to the shape of the upper end of the boss, and the side wall of the lower groove close to the rear cover plate is provided with a lower semicircular hole adapted to the lower end of the boss shape corresponding to the upper semicircular hole. The boss passes through the upper semicircular hole and the lower semicircular hole, so that the upper end of the boss abuts against the lower end of the upper semi-ring gasket, the lower end of the boss abuts against the upper end of the lower semi-ring gasket, and the tail end of the rear cover plate abuts against the side walls of the upper groove and the lower groove close to the rear cover plate.

4. The automotive air conditioner damper actuator according to claim 1, characterized in that: The motor assembly also includes a first sleeve and a sheet-like elastic member. The motor housing includes a first end and a second end of the motor housing. The rotor shaft is rotatably mounted in the motor housing. The first sleeve is supported and mounted on the rotor shaft near the first end of the motor housing. The sheet-like elastic member is fixed to the first end of the motor housing and is adapted to the shape of the first end of the motor housing. The sheet-like elastic member applies elastic force to the rotor shaft through the first sleeve. The rear cover is arranged at the first end of the motor housing and the outer end of the sheet-like elastic member, and is fixed to the motor housing and the sheet-like elastic member as a whole. A mounting through hole is arranged at the center of the boss, and the tail end of the first sleeve is fitted into the mounting through hole.

5. The automotive air conditioner damper actuator according to claim 4, characterized in that: The motor assembly also includes a second sleeve, a worm, and a worm bracket. The second sleeve is supported and installed on the other end of the rotor shaft. The worm is fixed to the output end of the rotor shaft, and the large end of the worm bracket is fixed to the second end of the motor housing. The small end of the worm bracket is sleeved and installed on the outer periphery of the second sleeve and is limited by the second sleeve.

6. The automotive air conditioner damper actuator according to claim 5, characterized in that: The actuator also includes a worm shock-absorbing pad, a limiting through hole is arranged at the center of the worm shock-absorbing pad, and the first end of the second sleeve is installed inside the worm shock-absorbing pad so that the side wall of the limiting through hole abuts against the side wall of the first end of the second sleeve, and the front end face of the worm bracket abuts against the rear end face of the worm shock-absorbing pad.

7. The automotive air conditioner damper actuator according to claim 6, characterized in that: The inner wall of the actuator upper shell is provided with a limit block, the inner wall of the actuator lower shell is provided with an open groove corresponding to the limit block, the worm shock-absorbing pad is arranged inside the open groove, and the upper end of the worm shock-absorbing pad is against the lower end of the limit block.

8. The automotive air conditioner damper actuator according to claim 1, characterized in that: The outer wall of the actuator lower shell is provided with a plurality of clamping blocks, and the outer wall of the actuator upper shell is provided with a plurality of clamping grooves corresponding to the clamping blocks, and the clamping blocks are engaged with the clamping grooves.

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