CN211233279U

CN211233279U - Air conditioner door opening and closing actuator

Info

Publication number: CN211233279U
Application number: CN201922273807.3U
Authority: CN
Inventors: 冯佳慧; 王富冈; 王远磊
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-08-11
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses an air conditioner door opening and closing actuator, which comprises a protection box; the motor assembly is electrically connected with an external power supply; the two-wheel assembly is in transmission connection with the output end of the motor assembly, and a first external gear structure is arranged on the outer side of the two-wheel assembly; one end of the output wheel is connected with the air deflector and is suitable for driving the air deflector to rotate, and the other end of the output wheel is provided with sector teeth in transmission connection with the first external gear structure of the two-wheel assembly; and a pair of rotation limiting ribs for limiting the rotation angle of the output wheel are arranged on the end surface of the protection box close to the output wheel. The utility model discloses a fan-shaped tooth restricts the rotation angle of aviation baffle with the cooperation of rotatory spacing muscle on the output wheel, improves the accuracy of aviation baffle opening angle, has reduced the moment of torsion that the aviation baffle connecting axle received.

Description

Air conditioner door opening and closing actuator

Technical Field

The utility model relates to an air conditioner design technical field especially relates to an air conditioner switch door executor.

Background

In the existing market, the air deflector of the split on-hook air conditioner needs to meet the functions of up-down air sweeping and closing, most air conditioners use a permanent magnet speed reduction stepping motor to directly drive the air deflector to sweep and close up and down, and the permanent magnet speed reduction stepping motor does not have a structure for protecting broken teeth, so that the phenomenon of broken teeth can be caused if the torque is too large, the air deflector is difficult to be made large, and the air outlet of the air conditioner and the air deflector are small in air sweeping area; in order to increase the size of the air outlet of the split air conditioner and increase the air sweeping of the air deflector, the air deflector of the air conditioner is usually made large, so that an elastic arm structure is additionally arranged between the stepping motor and the air deflector in the prior art, and when the torque is too large, the elastic arm and a part connected with the elastic arm rotate relatively, so that the phenomenon of tooth breakage is avoided. However, when the size of the air deflector of the air conditioner is large, the movement inertia of the air deflector is increased, the air deflector cannot stop moving immediately after the stepping motor stops moving, and at the moment, a connecting shaft of the actuator and the air deflector is subjected to a large torque, so that the requirement on the torsional strength of the connecting shaft is high, and the accuracy of the opening angle of the air deflector is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the increase of aviation baffle motion inertia behind the aviation baffle size increase among the split type on-hook air conditioner among the prior art, lead to the stop position accuracy of aviation baffle to reduce, the moment of torsion greatly increased's that the aviation baffle connecting axle received technical problem, the utility model provides an air conditioner switch door executor solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: an air conditioner door opening and closing actuator comprises a protection box; the motor assembly is arranged in the protection box and is electrically connected with an external power supply; the two-wheel assembly is arranged in the protection box and is in transmission connection with the output end of the motor assembly, and a first external gear structure is arranged on the outer side of the two-wheel assembly; the output wheel is arranged in the protection box, one end of the output wheel is connected with the air deflector and is suitable for driving the air deflector to rotate, and sector teeth in transmission connection with the first external gear structure of the two-wheel assembly are arranged at the other end of the output wheel; and a pair of rotation limiting ribs for limiting the rotation angle of the output wheel are arranged on the end surface of the protection box close to the output wheel, and two of the rotation limiting ribs are respectively positioned on two sides of the rotation direction of the fan-shaped teeth.

Furthermore, the protection box comprises a protection shell and a protection cover which are mutually buckled, an output wheel mounting hole is formed in the end face, close to the side plate, of the protection shell, and the output wheel penetrates through the output wheel mounting hole to be connected with the air deflector; the two rotary limiting ribs are arranged to protrude out of the inner side of the side plate.

Preferably, the plane of the surface of each of the two rotation limiting ribs, which is in contact with the corresponding sector tooth, passes through the central axis of the output wheel mounting hole.

Furthermore, one end of the output wheel, which is connected with the air deflector, is provided with a cross-shaped end, the cross-shaped end is composed of two groups of cross ends which are respectively and symmetrically arranged and have mutually perpendicular symmetrical axes, and the cross ends in different groups of cross ends have different widths.

Further, the motor assembly comprises a stepping motor and a wheel connected with the output end of the stepping motor in a transmission mode, a second external gear structure in meshing transmission with the two wheel assemblies is arranged on the outer side of the circumference of the wheel, a flat potential hole in transmission connection with the stepping motor is arranged on the inner side of the circumference of the wheel, and a round hole in rotation connection with the protective shell.

Further, the two-wheel assembly comprises two wheel sheets and two wheel shaft teeth; the two-wheel sheet with a round of meshing transmission, the circumference inboard of two-wheel sheet still is provided with the internal tooth structure, two-wheel axle tooth include with the linkage segment that the output wheel transmission is connected and with the elastic section that two-wheel sheet is connected, the elastic section has and is suitable for the card to go into the elastic arm of the root of tooth of internal tooth structure.

Preferably, be equipped with on the protective housing with the fixed visor installation reference column of the location mounting hole installation of visor, with the spacing muscle of visor of the inboard laminating of visor and with the screw mounting hole of the fixed orifices of visor, visor installation reference column and the spacing muscle of visor are close to respectively the both sides of protective housing set up, the screw mounting hole is close to the spacing muscle of visor sets up.

Preferably, the outside of protective housing is provided with a plurality of buckles, the head of buckle has the chamfer, the outside of visor be equipped with the draw-in groove that the buckle matches.

Furthermore, a gear box assembly and an output shaft assembly are arranged between the stepping motor and the first wheel, and the input end of the gear box assembly is in transmission connection with the output end of the stepping motor; the output shaft assembly comprises an output shaft, a wheel connecting section and an outer gear section, the wheel connecting section and the outer gear section are sleeved on the periphery of the output shaft, the outer gear section is in meshing transmission with the output end of the gear box assembly, and the wheel connecting section is in transmission connection with the wheel; when the rotating torque is too large, the output shaft, the wheel connecting section and the external gear section can rotate relatively.

Preferably, the wheel connecting section is provided with a flat side face, and the wheel connecting section and the external gear section are both manufactured by adopting an injection molding process.

The utility model has the advantages that:

(1) air conditioner switch door executor pass through the rotation rate of multistage gear drive's mode adjustment aviation baffle, the rotation angle of aviation baffle is restricted with the cooperation of rotatory spacing muscle through fan-shaped tooth on the output wheel simultaneously, when the aviation baffle is rotatory to two limit angle, fan-shaped tooth supports respectively on the rotatory spacing muscle of two differences to make the aviation baffle stop motion rapidly, improve the accuracy of aviation baffle opening angle, reduced the moment of torsion that the aviation baffle connecting axle received.

(2) The utility model discloses in, rotatory spacing muscle with the surface place plane of fan-shaped tooth contact is passed through the center pin of output wheel mounting hole, thereby make fan-shaped tooth with rotatory spacing muscle is the face contact, improves the compressive strength of rotatory spacing muscle.

(3) The utility model discloses in, with the aviation baffle is connected output wheel one end is provided with the cross end, the cross end has the unequal cross end of two sets of widths, through the cross end can really export the installation angle of wheel, places the subassembly assembly mistake, leads to aviation baffle rotation angle to go wrong.

(4) The utility model discloses in, still be connected with gear box subassembly and output shaft subassembly on step motor's the output, the split type structure that the output shaft subassembly cup jointed inside and outside for, rely on the frictional force of the inner and outer structure of output shaft subassembly to realize the moment transmission, when moment is less, the inner and outer structure synchronous operation of output shaft subassembly, when moment is great, the inner and outer structure of output shaft subassembly rotates relatively to protect the inside gear of step motor.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is an exploded view of an embodiment of an air conditioner door opening/closing actuator according to the present invention;

FIG. 2 is a schematic view of the internal cross-section of the assembled protective case of the present invention;

fig. 3 is a schematic structural view of the protective case of the present invention;

FIG. 4 is a top view of the wheel of the present invention (as viewed from one end of the flattened hole);

fig. 5 is a schematic view of the assembly relationship between the first wheel and the stepping motor in the present invention;

FIG. 6 is a schematic structural view of the two-wheel axle gear of the present invention;

FIG. 7 is a front view of the two-wheel sheet of the present invention;

FIG. 8 is a schematic cross-sectional view of the two-wheel assembly of the present invention;

fig. 9 is an exploded view of the protective case of the present invention;

fig. 10 is a schematic view of the back structure of the protective shell of the present invention;

fig. 11 is a schematic diagram of a position of the abdicating groove on the protection box according to the present invention;

fig. 12 is a schematic structural diagram of the protective cover of the present invention;

fig. 13 is a schematic structural view of the output wheel of the present invention;

FIG. 14 is a top view of the output wheel of FIG. 13;

fig. 15 is an exploded view of an embodiment of an air conditioner door actuator according to the present invention;

fig. 16 is a schematic structural view of the output shaft assembly of the present invention;

FIG. 17 is a cross-sectional schematic view of the output shaft assembly illustrated in FIG. 16.

In the figure, 1, a protective shell, 101, a side plate, 102, an output wheel mounting hole, 103, a gear shaft positioning hole, 104, a wheel positioning column, 105, a buckle, 106, a protective cover mounting positioning column, 107, a protective cover limiting rib, 108, a screw mounting hole, 109, a fixing column mounting hole, 2, a protective cover, 201, a gear shaft mounting hole, 202, a clamping groove, 203, a connecting line outlet, 204, a abdicating groove, 205, a screw fixing column, 206, a reinforcing rib, 3, a motor component, 301, a stepping motor, 302, a wheel, 3021, a second external gear structure, 3022, a flat potential hole, 3023, a round hole, 4, a two-wheel component, 401, a two-wheel piece, 4011, an internal tooth structure, 402, a two-wheel shaft tooth, 4021, a connecting section, 40211, a first external gear structure, 4022, an elastic arm, 4023, a radial limiting rib, 5, an output wheel, 501, a sector tooth, 502, a cross end, 503, a cross end, 504, 6. the gear box assembly comprises a rotation limiting rib 7, a gear shaft 8, a gear box assembly 9, an output shaft assembly 901, an output shaft 902, a wheel connecting section 903, an outer gear section 10 and a cover plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Embodiment 1, an air conditioner door opening and closing actuator, as shown in fig. 1 to 3, 13 and 14, includes a protection box, and a motor assembly 3, a two-wheel assembly 4 and an output wheel 5 installed in the protection box, wherein the motor assembly 3 is electrically connected to an external power supply; the two-wheel assembly 4 is in transmission connection with the output end of the motor assembly 3, and a first external gear structure 40211 is arranged on the outer side of the two-wheel assembly 4; one end of the output wheel 5 is connected with the air deflector and is suitable for driving the air deflector to rotate, and the other end of the output wheel is provided with sector teeth 501 in transmission connection with the first outer gear structure 40211 of the two-wheel assembly 4; a pair of rotation limiting ribs 6 for limiting the rotation angle of the output wheel 5 are arranged on the end surface of the protection box close to the output wheel 5, and two rotation limiting ribs 6 in the pair of rotation limiting ribs 6 are respectively positioned on two sides of the sector gear 501 in the rotation direction. The aviation baffle can the stall when the side of fan-shaped tooth 501 and rotatory spacing muscle 6 contact, has increased the area of contact of output wheel 5 with rotatory spacing muscle 6 through the design of fan-shaped tooth 501, improves the compressive strength of rotatory spacing muscle 6, is applicable to the rotation spacing of jumbo size aviation baffle.

As shown in fig. 3 and 9, the protection box specifically includes a protection shell 1 and a protection cover 2 which are fastened to each other, an output wheel mounting hole 102 is formed in an end surface of the protection shell 1 close to a side plate 101, and an output wheel 5 penetrates through the output wheel mounting hole 102 and is connected with the air deflector; the inboard setting of two rotatory spacing muscle 6 protrusion curb plates 101, output wheel 5 is close to the curb plate 101 installation of protective housing 1 promptly, and rotatory spacing muscle 6 can be connected with the terminal surface and the curb plate 101 of protective housing 1 simultaneously, increases the intensity of rotatory spacing muscle 6. The output wheel 5 is in clearance fit with the output wheel mounting hole 102. Preferably, the plane of the surface of the two rotation limiting ribs 6 contacting with the sector-shaped teeth 501 passes through the central axis of the output wheel mounting hole 102, when the output wheel 5 runs to one side, the output wheel 5 and the output wheel 5 limiting ribs are in surface contact, the output wheel 5 is prevented from being in point contact with the protective shell 1, and the included angle between the contact surfaces of the two rotation limiting ribs 6 and the sector-shaped teeth 501 is determined according to the running angle of the air deflector. As shown in fig. 2, 3 and 9, the protective cover 2 has a gear shaft mounting hole 201 which is in interference fit with the gear shaft 7, the protective shell 1 is provided with a corresponding gear shaft positioning hole 103, so that the gear shaft 7 is arranged between the protective cover 2 and the protective shell 1, and the two-wheel assembly 4 is rotatably connected to the gear shaft 7.

As shown in fig. 1, 3-5, the motor assembly 3 includes a stepping motor 301 and a first wheel 302 in transmission connection with an output end of the stepping motor 301, a second external gear structure 3021 in transmission connection with the second wheel assembly 4 is arranged on an outer circumferential side of the first wheel 302, a flat potential hole 3022 in transmission connection with the stepping motor 301 and a round hole 3023 in rotation connection with the protective housing 1 are arranged on an inner circumferential side of the first wheel 302, the motor assembly 3 includes the stepping motor 301 and the first wheel 302 in transmission connection with the output end of the stepping motor 301, the second external gear structure 3021 in transmission connection with the second wheel assembly 4 is arranged on an outer circumferential side of the first wheel 302, the flat potential hole 3022 in transmission connection with the stepping motor 301 and the round hole 3023 in rotation connection with the protective housing 1 are arranged on an inner circumferential side of the first wheel 302. One wheel 302 is formed by injection molding, so that the dimensional precision is high, the yield is high, and the part cost is low. The flat hole 3022 is located at one end of the one wheel 302, the round hole 3023 is located at the other end of the one wheel 302, the flat hole 3022 is preferably double flat, and the flat holes 3022 are arranged symmetrically along the center of the one wheel 302; multiple flat and single flat can be adopted. The size of the bottom end of the flat potential hole 3022 is larger than the size of the output end of the stepping motor 301, and the size of the middle part is smaller than the size of the output end of the stepping motor 301. When one wheel 302 is assembled with the stepping motor 301, the outer double flat of the output end of the stepping motor 301 is in transition fit with the flat potential hole 3022 of the one wheel 302, the one wheel 302 is pressed in through external force, and the one wheel 302 and the stepping motor 301 are assembled into the motor assembly 3 to prevent the one wheel 302 from falling off, and the one wheel 302 and the output end of the stepping motor 301 rotate simultaneously to reduce the virtual position of the one wheel 302. A wheel positioning column 104 is arranged on the protective shell 1, and a round hole 3023 of a wheel 302 is inserted into the wheel positioning column 104.

As shown in fig. 6 to 8, the two-wheel assembly 4 includes two-wheel plates 401 and two-wheel axle teeth 402; the two-wheel plate 401 is in meshed transmission with the first wheel 302, an internal tooth structure 4011 is further arranged on the inner side of the circumference of the two-wheel plate 401, the two-wheel shaft gear 402 comprises a connecting section 4021 in transmission connection with the output wheel 5 and an elastic section connected with the two-wheel plate 401, and the elastic section is provided with an elastic arm 4022 suitable for being clamped into the tooth root of the internal tooth structure 4011. The two-wheel shaft gear 402 and the two-wheel plate 401 adopt an injection molding processing technology. The internal tooth structures 4011 are uniformly distributed along the inner ring of the two-wheel plate 401, and the root parts of the internal teeth adopt circular arc transition. On the second wheel axle tooth 402, the first external gear structure 40211 is located on the connecting section 4021, the elastic arms 4022 are provided with one or more elastic arms 4022, two ends of each elastic arm 4022 are respectively provided with an elastic arm 4022 vertex, the elastic arm 4022 vertices are at the root of the internal teeth, the elastic arms 4022 are provided with a certain force arm, and the length of the force arm and the number of the elastic arms 4022 can be adjusted according to actual use requirements.

Two elastic arms 4022 are arranged in fig. 8, a radial limiting rib 4023 is further arranged between the two elastic arms 4022, and two ends of the radial limiting rib 4023 are abutted to the surface of the inner tooth structure 4011 to prevent the two wheel plates 401 from generating radial displacement.

During normal operation, the two-wheel plate 401 and the two-wheel shaft gear 402 rotate synchronously. When a large external force is applied, the elastic arm 4022 of the two-wheel shaft tooth 402 is pressed and deformed, and the two-wheel plate 401 and the two-wheel shaft tooth 402 rotate relatively. The torque at this time is called friction torque, which is lower than the strength of broken teeth of the stepping motor 301, so that no broken teeth are left inside the stepping motor 301 when the two-wheel plate 401 and the two-wheel shaft teeth 402 rotate relatively. After the elastic arm 4022 is deformed and recovered, the elastic arm 4022 can return to the original state, and the upper limit of the force applied during slipping can still meet the requirement of the customer standard.

The buckling structure between the protective shell 1 and the protective cover 2 is as follows: the outer side of the protective shell 1 is provided with a plurality of buckles 105, the heads of the buckles 105 are provided with chamfers, and the outer side of the protective cover 2 is provided with a clamping groove 202 matched with the buckles 105. As shown in fig. 9 and 10, there are three triangular buckles 105 on the protective shell 1, and the heads of the buckles 105 have a certain chamfer angle to play a guiding role in installation. On protective cover 2, be three draw-in groove 202 of triangular distribution equally, draw-in groove 202 sets up on the three jack catch of protective cover 2, and buckle 105 and the cooperation assembly of draw-in groove 202 guarantee that protective housing 1 and protective cover 2 cooperation back can not be because of buckle 105 uneven distribution, cause the clearance great between protective housing 1 and the protective cover 2. The arrangement of the protection box can separate the internal gear train from the external space, so that external foreign matters are prevented from entering the protection box.

The protective shell 1 and the protective cover 2 are fixed in the following manner: as shown in fig. 3, be equipped with on the protective housing 1 with the fixed visor installation reference column 106 of the location mounting hole installation of visor 2, with the inboard spacing muscle 107 of visor 2 laminating and with the fixed screw mounting hole 108 of visor 2 of the fixed orifices (the utility model discloses in do not signal 2 inner structure of visor), visor installation reference column 106 and the spacing muscle 107 of visor are close to the both sides setting of protective housing 1 respectively, and screw mounting hole 108 is close to the spacing muscle 107 setting of visor. The plane of the top end of the protective cover limiting rib 107 and the plane of the top end of the protective cover mounting positioning column 106 are the same horizontal plane. When the motor is installed, the installation hole at one end of the protective cover 2 is installed with the protective cover installation positioning column 106, the other end of the protective cover is positioned through the protective cover limiting rib 107, the stepping motor 301 is fixed on the protection box through screws, and the stepping motor 301 can be prevented from rotating when the actuator is stressed through screw fixation. The height of the protective cover limiting rib 107 is lower than the thickness of the protective cover 2, so that the installation of the stepping motor 301 is facilitated, and meanwhile, a two-end screw fastening mode can be adopted.

The protection box and the air conditioner are installed in the following mode: the back of protective housing 1, the terminal surface that is located the outside of protection box promptly is equipped with a pair of fixed column mounting hole 109, and fixed column mounting hole 109 distributes and the both sides of protective housing 1, and is triangle-shaped distribution with output wheel mounting hole 102, and fixed column mounting hole 109 and air conditioner reference column installation then use the screw to be fixed executor and air conditioner.

As shown in fig. 11, a connecting line outlet 203 is formed in the protective cover 2, and a yielding slot 204 penetrating through the connecting line is formed in the side surface of the protective cover 2, so that the temperature rise of the mechanism can be effectively reduced, and the mechanism failure caused by a high internal temperature of the stepping motor 301 can be prevented. The receding groove 204 is preferably perpendicular to the direction of the end face of the connecting wire outlet 203 to prevent the connecting wire from being removed, and the receding groove 204 may extend to the end face of the protective cover 2.

As shown in fig. 12, on the upper end face of the protective cover 2, that is, the end face located outside the protective box, there are screw fixing columns 205 fixed to the air conditioner, reinforcing ribs 206 are distributed on the periphery of the screw fixing columns 205 to prevent the screw fixing columns 205 from breaking, the bottom of the reinforcing ribs 206 is connected to the end face of the protective cover 2, the top of the reinforcing ribs does not protrude out of the surface of the screw fixing columns 205 to prevent interference with the air conditioner, the reinforcing ribs 206 are preferably distributed in a splayed manner, and each reinforcing rib 206 is arranged along the radial direction of the screw fixing column 205.

In embodiment 2, the output wheel 5 and the air guiding plate are usually connected in a key connection or interference fit manner, so that the air guiding plate and the output wheel 5 rotate synchronously, and due to the design of the sector-shaped teeth 501 on the output wheel 5, for different requirements on the operating angles of the air guiding plate, the angular relationship between the sector-shaped teeth 501 and the rotation limiting ribs 6 when the output wheel 5 is installed has different requirements, in order to avoid errors in the installation position, the present embodiment improves the output wheel 5 as shown in fig. 13 and 14, one end of the output wheel 5 connected with the air guiding plate is provided with a cross-shaped end 502, the cross-shaped end 502 is composed of two groups of cross-shaped ends 503 which are respectively and symmetrically arranged and have mutually perpendicular symmetry axes, the cross-shaped ends 503 in different groups of cross-shaped ends 503 have different widths, a groove structure 504 is designed between adjacent cross-shaped ends 503 for being clamped in corresponding clamping openings of the air guiding, the width difference of the cross ends 503 in different groups of cross ends 503 means that the arc lengths of the radial end portions of the cross ends 503 in different groups of cross ends 503 are different, in this embodiment, the center line of the cross end 503 with the longer arc of the radial end portion forms a certain included angle with two sides of the sector-shaped teeth 501, during installation, the sector-shaped teeth 501 are located inside the protective shell 1 and clamped, at the moment, the cross-shaped end 502 and the air deflector only have a clamping mode, if the cross-shaped end 502 is rotated by 180 degrees and connected with the air deflector, the sector-shaped teeth 501 are located outside the protective shell 1, and therefore, the sector-shaped teeth 501 can effectively avoid assembly angle deviation.

Embodiment 3, in embodiment 1 or embodiment 2, the problem that the internal gear of the stepping motor 301 may be broken when the torque is increased is solved by the design of the elastic arm 4022 in the two-wheel shaft gear 402, and when the actuator torque required by a customer is large, the hidden danger of tooth breakage still exists only by the action of the elastic arm 4022, for this reason, on the basis of embodiment 1 or embodiment 2, as shown in fig. 15 to 17, a gear box assembly 8 and an output shaft assembly 9 are further arranged between the stepping motor 301 and the one-wheel 302, and the input end of the gear box assembly 8 is in transmission connection with the output end of the stepping motor 301; the output shaft assembly 9 comprises an output shaft 901, a wheel connecting section 902 and an external gear section 903, wherein the wheel connecting section 902 and the external gear section 903 are sleeved on the periphery of the output shaft 901, the external gear section 903 is in meshing transmission with the output end of the gearbox assembly 8, and the wheel connecting section 902 is in transmission connection with a wheel 302; when the rotational torque is too large, the output shaft 901, the one-wheel connection section 902, and the external gear section 903 can rotate relatively. Specifically, a wheel linkage section 902 has a flat side, makes a wheel 302 and a wheel linkage section 902 synchronous revolution, and one end of output shaft 901 is located a wheel linkage section 902 inside, and the other end stretches out external gear section 903 and is connected with the casing on the gear box subassembly 8 rotation, and external gear section 903 a wheel linkage section 902 and external gear section 903 all adopt injection molding process to make and form, and friction torque is stable, easily mass production, and manufacturing cost is also lower. The output shaft 901 is a stepped shaft, so that the contact area between the output shaft 901 and the wheel connecting section 902 and the external gear section 903 is increased, the surfaces of the output shaft 901, which are in contact with the wheel connecting section 902 and the external gear section 903, are circumferential surfaces, the output shaft 901 rotates synchronously with the wheel connecting section 902 and the external gear section 903 when the torque is small, and the output shaft 901 rotates relatively with the wheel connecting section 902 and the external gear section 903 when the torque is large. A cover plate 10 can be arranged between the wheel 302 and the output shaft assembly 9, and friction between the output shaft 901 and the end face of the wheel 302 is reduced.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An air conditioner door opening and closing actuator, comprising:

a protection box;

the motor component (3) is arranged in the protection box, and the motor component (3) is electrically connected with an external power supply;

the two-wheel assembly (4) is arranged in the protection box, the two-wheel assembly (4) is in transmission connection with the output end of the motor assembly (3), and a first external gear structure (40211) is arranged on the outer side of the two-wheel assembly (4);

the output wheel (5) is arranged in the protection box, one end of the output wheel (5) is connected with the air deflector and is suitable for driving the air deflector to rotate, and the other end of the output wheel is provided with sector teeth (501) in transmission connection with the first outer gear structure (40211) of the two-wheel assembly (4);

the end face, close to the output wheel (5), of the protection box is provided with a pair of rotation limiting ribs (6) for limiting the rotation angle of the output wheel (5), and two rotation limiting ribs (6) in the pair of rotation limiting ribs (6) are respectively located on two sides of the rotation direction of the fan-shaped tooth (501).

2. An air conditioner door opening and closing actuator as claimed in claim 1, wherein: the protection box comprises a protection shell (1) and a protection cover (2) which are mutually buckled, an output wheel mounting hole (102) is formed in the end face, close to the side plate (101), of the protection shell (1), and the output wheel (5) penetrates through the output wheel mounting hole (102) to be connected with the air deflector;

the two rotation limiting ribs (6) are arranged to protrude out of the inner side of the side plate (101).

3. An air conditioner door opening and closing actuator as claimed in claim 2, wherein: the plane of the surface of the two rotation limiting ribs (6) in contact with the sector teeth (501) passes through the central shaft of the output wheel mounting hole (102).

4. An air conditioner door opening and closing actuator as claimed in claim 1, wherein: one end of the output wheel (5) connected with the air deflector is provided with a cross-shaped end (502), the cross-shaped end (502) is composed of two groups of cross ends (503) which are respectively and symmetrically arranged and have mutually perpendicular symmetrical axes, and the cross ends (503) in different groups of cross ends (503) have different widths.

5. An air conditioner door opening and closing actuator as claimed in claim 2, wherein: the motor element (3) comprises a stepping motor (301) and a wheel (302) connected with the output end of the stepping motor (301) in a transmission manner, the outer side of the circumference of the wheel (302) is provided with a second external gear structure (3021) in a meshing transmission manner with the two wheel elements (4), the inner side of the circumference of the wheel (302) is provided with a flat potential hole (3022) connected with the stepping motor (301) in a transmission manner, and the protective shell (1) is rotationally provided with a round hole (3023).

6. An air conditioner door opening and closing actuator according to claim 5, wherein: the two-wheel assembly (4) comprises two-wheel sheets (401) and two-wheel shaft teeth (402); the double round piece (401) with a round (302) meshing transmission, the circumference inboard of double round piece (401) still is provided with internal tooth structure (4011), double round axle tooth (402) including with changeover portion (4021) that output wheel (5) transmission is connected and with the elastic segment that double round piece (401) is connected, the elastic segment has and is suitable for the card to go into elastic arm (4022) of the root of tooth of internal tooth structure (4011).

7. An air conditioner door opening and closing actuator as claimed in claim 2, wherein: be equipped with on protective housing (1) with the fixed visor installation reference column (106) of the location mounting hole installation of visor (2), with the inboard spacing muscle of visor (107) of laminating of visor (2) and with the fixed screw mounting hole (108) of the fixed orifices of visor (2), visor installation reference column (106) and the spacing muscle of visor (107) are close to respectively the both sides setting of protective housing (1), screw mounting hole (108) are close to the spacing muscle of visor (107) sets up.

8. An air conditioner door opening and closing actuator as claimed in claim 2, wherein: the protective housing is characterized in that a plurality of buckles (105) are arranged on the outer side of the protective housing (1), the heads of the buckles (105) are provided with chamfers, and clamping grooves (202) matched with the buckles (105) are formed in the outer side of the protective cover (2).

9. An air conditioner door opening and closing actuator according to claim 5, wherein: a gear box assembly (8) and an output shaft assembly (9) are further arranged between the stepping motor (301) and the first wheel (302), and the input end of the gear box assembly (8) is in transmission connection with the output end of the stepping motor (301);

the output shaft assembly (9) comprises an output shaft (901), a wheel connecting section (902) and an external gear section (903), wherein the wheel connecting section (902) and the external gear section (903) are sleeved on the periphery of the output shaft (901), the external gear section (903) is in meshing transmission with the output end of the gearbox assembly (8), and the wheel connecting section (902) is in transmission connection with the wheel (302); when the rotating torque is too large, the output shaft (901), the one-wheel connecting section (902) and the external gear section (903) can rotate relatively.

10. An air conditioner door opening and closing actuator as claimed in claim 9, wherein: the one-wheel connecting section (902) is provided with a flat side face, and the one-wheel connecting section (902) and the external gear section (903) are both manufactured by adopting an injection molding process.