CN108036490B

CN108036490B - Door opening and closing movement mechanism and air conditioner

Info

Publication number: CN108036490B
Application number: CN201711464055.8A
Authority: CN
Inventors: 庞丰; 陈子雄
Original assignee: Midea Group Co Ltd; Wuhu Meizhi Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Meizhi Air Conditioning Equipment Co Ltd
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2024-06-04
Anticipated expiration: 2037-12-28
Also published as: CN108036490A

Abstract

The invention provides a door opening and closing movement mechanism and an air conditioner, comprising: the device comprises a motor base, a driving motor, a controller, a transmission device, a magnetic device and a circuit board; the magnetic device is arranged on the transmission device or the output shaft; the circuit board is electrically connected with the controller, and can sense the change of a magnetic field generated by the magnetic device during rotation and convert the change into an electric signal to be transmitted to the controller; wherein the circuit board is arranged on the axial side surface of the magnetic device and is deviated from the rotation axis of the magnetic device. The door opening and closing movement mechanism can realize the function of preventing a clamping hand according to magnetic field induction; the circuit board is arranged on the axial side surface of the magnetic device and deviates from the rotation axis of the magnetic device, so that the distance between the induction element and the magnetic pole of the magnetic device can be shortened as far as possible, the sensitivity of the circuit board to the change of the induction magnetic field is improved, other electric elements on the circuit board can be far away from the magnetic device, and the use reliability of the circuit board is improved.

Description

Door opening and closing movement mechanism and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to a door opening and closing movement mechanism and an air conditioner.

Background

At present, in daily life, a plurality of household appliances or furniture are provided with switch doors, and a motor drives the switch to be realized. For example, in the field of air conditioners, cabinet air conditioners are provided with a door opening and closing, and for aesthetic purposes, the door opening and closing needs to be ensured to reduce a gap as much as possible after the door is closed, so that a motion mechanism for driving the door opening and closing needs to have a larger moment. In order to avoid the situation that the hand of a user is scratched or foreign matters enter the driving motor or other parts to be damaged after the moment of the door opening and closing movement mechanism is increased, corresponding anti-pinch devices are arranged. However, the structure of the existing anti-pinch device is not reasonable enough, and the performance is not sensitive and reliable enough, so that higher risks still exist.

Disclosure of Invention

In order to solve at least one of the above problems, an object of the present invention is to provide a door opening and closing movement mechanism.

Another object of the present invention is to provide an air conditioner including the above door opening and closing movement mechanism.

In order to achieve the above object, a first aspect of the present invention provides a door opening and closing movement mechanism, including: a motor base; the driving motor is arranged on the motor seat; the controller is electrically connected with the driving motor and used for controlling the driving motor to work; the transmission device is connected with an output shaft of the driving motor and used for driving the switch door to move in a preset range; a magnetic device mounted on the transmission device or the output shaft, capable of rotating with the rotation of the output shaft, and generating a changing magnetic field according to the change of the rotation speed; the circuit board is electrically connected with the controller, can sense the change of the magnetic field generated by the magnetic device during rotation, and converts the sensed change of the magnetic field into an electric signal to be transmitted to the controller, so that the controller controls the driving motor to work according to the electric signal; wherein the circuit board is arranged on the axial side surface of the magnetic device and deviates from the rotation axis of the magnetic device.

According to the door opening and closing movement mechanism provided by the technical scheme of the first aspect of the invention, the magnetic device can rotate along with the rotation of the output shaft of the driving motor and can generate a variable magnetic field according to the change of the rotating speed, the circuit board can sense the change of the magnetic field and convert the signal into an electric signal according to the change of the magnetic field to be transmitted to the controller, and the controller controls the driving motor to work so as to drive the door opening and closing movement by the driving motor. Therefore, when foreign matters or hands stop the normal switch of the switch door, the rotation speed of the driving motor is disturbed, so that the rotation speed of the driving motor is changed, and the magnetic device rotates along with the rotation of the motor, so that the change of the magnetic field of the magnetic device also changes along with the change of the rotation speed, and the magnetic field is sensed by the circuit board and then can be transmitted to the controller to control the driving motor so as to change the operation of the driving motor, thereby realizing the function of preventing the clamping hand; meanwhile, the circuit board is arranged on the axial side of the magnetic device and is offset from the rotation axis of the magnetic device, namely: the circuit board is arranged on the outer side of the axial direction of the magnetic device and is not coaxially arranged with the magnetic device, so that a part of area of the circuit board can be even located on the outer side of the radial direction of the magnetic device, compared with the technical scheme that the circuit board and the magnetic device are coaxially arranged, the arrangement range of the induction element on the circuit board is remarkably increased, the distance between the induction element and the magnetic pole of the magnetic device is conveniently and reasonably controlled, the distance between the induction element and the magnetic pole of the magnetic device is shortened as much as possible on the basis that the circuit board cannot be contacted with the magnetic device, the sensitivity of the induction magnetic field change of the circuit board is improved, and the sensitivity and the reliability of the door opening and closing movement mechanism are further improved; in addition, compared with the technical scheme that the circuit board and the magnetic device are coaxially arranged and the circuit board is arranged on the radial side face of the magnetic device, other electric elements on the circuit board can be far away from the magnetic device, so that the magnetic device is prevented from interfering with other electric elements on the circuit board, friction and the like caused by too short distance between the circuit board and the magnetic device are avoided as much as possible, and the use reliability of the circuit board is further improved.

It should be noted that the controller may be a separately provided controller for controlling the door opening and closing movement mechanism; the device can also be integrally arranged on a main control board of equipment, for example, for an air conditioner, the device is directly arranged on the main control board of the air conditioner so as to control the operation of a driving motor; the control mode is that the controller rotates forward, rotates reversely or stops.

In addition, the door opening and closing movement mechanism in the technical scheme provided by the invention can also have the following additional technical characteristics:

In the above technical scheme, the magnetic device is circular or ring-shaped and is coaxially connected with the driving motor, a clamping seat is arranged on the motor seat, and the circuit board is fixedly arranged on the clamping seat.

The magnetic device is in a circular shape or a circular ring shape, is coaxially connected with the driving motor, can be directly connected or indirectly connected, is beneficial to the rotation movement of the magnetic device under the driving of the driving motor and is beneficial to the generation of a uniform magnetic field; be equipped with the cassette on the motor cabinet, circuit board fixed mounting has guaranteed the stability of circuit board position on the cassette, and then has guaranteed the operational reliability of circuit board.

In the above technical scheme, the clamping seat is provided with a clamping groove, and the circuit board is clamped in the clamping groove.

The clamping groove is formed in the clamping seat, and the circuit board is clamped in the clamping groove, so that the assembly process of the circuit board is simple and quick; the distance between the circuit board and the magnetic device can be reasonably controlled by adjusting the position of the clamping groove, and coarse adjustment is carried out on the distance between the induction element and the magnetic pole of the magnetic device; the thickness of the circuit board can be adapted by adjusting the size of the clamping groove, and the distance between the induction element and the magnetic pole of the magnetic device can be finely adjusted; through the combination of rough adjustment and fine adjustment, the induction element on the circuit board is easy to adjust to a better position (such as to a position with the radial distance between the induction element and the magnetic device being 1mm or even closer to the radial distance), so that the sensitivity and the reliability of the circuit board are further improved, and the anti-pinch performance is more optimized.

In the above technical scheme, the clamping seat comprises a connecting plate connected with the motor seat, and a supporting plate and a pressing protrusion connected with two ends of the connecting plate in the width direction respectively, wherein the pressing protrusion is arranged opposite to the supporting plate, so that the clamping groove is defined between the connecting plate, the supporting plate and the pressing protrusion.

The clamping seat comprises a connecting plate, a supporting plate and a pressing protrusion, wherein the connecting plate is connected with the motor seat to realize the fixed connection of the clamping seat and the motor seat; the support plate is connected with one end of the width direction of the connecting plate to form a structure with an L-shaped cross section, the pressing bulge is connected with the other end of the width direction of the connecting plate and is arranged opposite to the support plate, so that a clamping groove is defined among the connecting plate, the support plate and the pressing bulge, the cross section of the clamping groove is U-shaped at the position of the pressing bulge opposite to the support plate, and the edge part of the circuit board is inserted into the clamping groove, so that the circuit board can be fixed and assembled very conveniently; meanwhile, the structure of the clamping seat is simpler, the volume is smaller, and the clamping seat is convenient for processing and forming.

In the above technical scheme, one end of the connecting plate in the length direction is connected with the motor base, and the other end of the connecting plate in the length direction extends in a direction away from the rotation axis of the magnetic device.

One end of the length direction of the connecting plate is connected with the motor base, the other end of the length direction of the connecting plate extends in the direction away from the rotating axis of the magnetic device, and then the circuit board mounted on the clamping base also extends in the direction away from the rotating axis of the magnetic device, so that most of structures of the circuit board are far away from the rotating axis of the magnetic device, the induction element can be arranged at the position of the circuit board, which is close to the magnetic device, so that the distance between the induction element and the magnetic pole of the magnetic device is shortened as much as possible, and other electrical elements on the circuit board are far away from the magnetic device as much as possible, so that interference with the magnetic device or interference caused by the magnetic device is avoided, and the use reliability of the circuit board is improved.

In the above technical solution, the support plate and the pressing protrusion are disposed opposite to each other along an axial direction of the magnetic device, and an axial distance between the support plate and the magnetic device is smaller than an axial distance between the pressing protrusion and the magnetic device.

The supporting plate and the pressing bulge are oppositely arranged along the axial direction of the magnetic device, and then the plate surface of the circuit board is approximately perpendicular to the rotation axis of the magnetic device; because the circuit board is located the axial outside of magnetic means, then the cassette also is located the axial outside of magnetic means correspondingly, therefore when the axial interval between backup pad and the magnetic means is less than the axial interval between pressfitting arch and the magnetic means for the backup pad is close to magnetic means more, because the backup pad is continuous platy, and area of contact with the circuit board is great relatively, therefore can play better supporting role to the circuit board, avoided the circuit board part to take place situations such as contact friction with the magnetic means, thereby further improved the reliability of use of circuit board.

In the above technical scheme, the length of the supporting plate is smaller than the length of the connecting plate, so that the clamping seat forms an avoidance gap at one end close to the magnetic device.

As mentioned above, in order to reduce the distance between the sensing element and the magnetic pole of the magnetic device as much as possible, the sensing element is preferably disposed at the end of the circuit board close to the magnetic device, so the length of the support plate is smaller than that of the connection plate, so that the card seat forms an avoidance gap at the end close to the magnetic device, and shielding of the card seat to the end of the circuit board close to the magnetic device can be reduced as much as possible, thereby reducing interference to the sensing element, and further improving sensitivity and reliability of the sensing element.

In the above technical scheme, the clamping seat further comprises a support column fixedly connected with the support plate and the motor seat; and/or the number of the pressing protrusions is multiple, and the pressing protrusions are arranged at intervals along the length direction of the connecting plate; and/or the pressing protrusion is strip-shaped, the length direction of the pressing protrusion is parallel to the width direction of the supporting plate, and the length of the pressing protrusion is larger than the width of the supporting plate.

As previously described, because connecting plate length direction's one end links to each other with the motor cabinet, and the other end extends to the direction of keeping away from magnetic means's rotation axis for the circuit board of installing on the cassette also extends to the direction of keeping away from magnetic means's rotation axis, so the majority of cassette and circuit board is unsettled, so add the support column between cassette and motor cabinet, the support column can play effectual supporting role to cassette and circuit board, thereby the stability of cassette and motor cabinet has been improved, and then also further improved holistic sensitivity and the stability of sensing element and switch door motion.

The number of the pressing bulges is multiple, and the pressing bulges are arranged at intervals along the length direction of the connecting plate, so that on one hand, the continuity of the clamping groove is ensured, the positioning effect is realized on the assembly of the circuit board, and the conditions of tilting, deflection and the like of the circuit board in the assembly process are avoided; on the other hand, a plurality of parts of the assembled circuit board can be pressed, so that the condition that the circuit board cannot shake in the use process is guaranteed, the stability of the position of the circuit board is improved, the distance between the induction element and the magnetic pole of the magnetic device is guaranteed to be stable, and the sensitivity and the reliability of the door opening and closing movement mechanism are further improved. Preferably, the number of the pressing protrusions is two, and one pressing protrusion is opposite to one end, close to the magnetic device, of the supporting plate, so that the circuit board cannot tilt upwards when passing through the position.

The pressing bulges are strip-shaped, the length direction of the pressing bulges is parallel to the width direction of the supporting plate, one side of the clamping groove for clamping the circuit board is a continuous supporting plate, and the other side of the pressing bulges is strip-shaped bulges which are arranged at intervals, so that the contact area between the clamping seat and the circuit board is effectively reduced, and excessive interference between the clamping seat and the circuit board is avoided; and the length that the pressfitting was mentionedly is greater than the width of backup pad, has guaranteed that the pressfitting protruding can play effectual pressfitting effect to the circuit board to avoid the circuit board to deviate from the draw-in groove easily, thereby improved the stability of circuit board position.

Of course, the shape and the number of the pressing protrusions are not limited to the above scheme, for example, the pressing protrusions may be strip-shaped, and the length direction of the pressing protrusions is parallel to the length direction of the supporting plate, and the number of the pressing protrusions is one, so that a continuous U-shaped groove structure is formed; or the length direction of the pressing bulges is parallel to the length direction of the connecting plate, and the number of the pressing bulges is a plurality of the pressing bulges to form a plurality of U-shaped groove structures … … which are arranged at intervals; the present invention can be achieved by these means without departing from the spirit and scope of the present invention, and therefore, the present invention is not limited to these means.

In any of the above technical solutions, the number of the card holders is two, the two card holders are oppositely arranged, and two ends of the circuit board are respectively clamped in the card slots on the two card holders.

The number of the clamping seats is two, the two clamping seats are arranged oppositely, and the number of the clamping grooves is also two, and the two clamping grooves are arranged oppositely; because the circuit board is generally rectangular, two opposite clamping grooves are formed, two ends of the circuit board are inserted along the openings of the two clamping grooves, so that the two ends of the circuit board are respectively clamped in the two clamping grooves, the circuit board can be effectively fixed, and the assembly is very convenient; and the situation that the sensitivity and the reliability of the electric element on the circuit board are reduced due to excessive interference between the clamping seat and the circuit board or shielding of the circuit board with an excessive area is avoided.

In the above technical solution, the two clamping seats are symmetrically arranged about the rotation axis of the magnetic device, the circuit board is rectangular, and two ends of the circuit board in the length direction are respectively clamped in the two clamping grooves; and/or, the length direction of the connecting plate is perpendicular to the rotation axis of the magnetic device.

The two clamping seats are symmetrically arranged about the rotation axis of the magnetic device, namely, the distances between the two clamping seats and the rotation axis of the magnetic device are equal, so that the distances between the two ends of the length direction of the circuit board and the center of the magnetic device are also equal, namely, the circuit board is placed right opposite to the magnetic device, the structure of the product is more regular, and the induction of the circuit board to the magnetic field change is also facilitated.

The length direction of the connecting plate is perpendicular to the rotation axis of the magnetic device, and then the plate surface of the circuit board is also perpendicular to the rotation axis of the magnetic device, so that the circuit board is transversely arranged on the axial side surface of the magnetic device, interference between the circuit board and other structures due to overhigh circuit board is avoided, the gravity center of the circuit board is reduced, and the two clamping grooves are more reliable in fixing the circuit board.

In any of the above technical solutions, the circuit board includes a main body and a hall plate, where the main body is located at an outer side of the magnetic device in an axial direction and deviates from a rotation axis of the magnetic device, and a plate surface of the main body is perpendicular to the rotation axis of the magnetic device, and the hall plate is disposed in the main body and is used for sensing a change of a magnetic field generated by the magnetic device during rotation.

The circuit board comprises a main body and a Hall piece, wherein the main body is plate-shaped, is electrically connected with the controller, is arranged on the axial side surface of the magnetic device and deviates from the rotation axis of the magnetic device, and the plate surface of the circuit board is perpendicular to the rotation axis of the magnetic device; the Hall plate is used as an induction element for inducing the change of a magnetic field generated by the magnetic device, and has the advantages of high sensitivity, small volume, light weight, long service life, convenient installation, low power consumption, high frequency, shock resistance, dust and oil dirt resistance, water vapor resistance, salt fog resistance and other pollution or corrosion resistance and the like; compared with the scheme of arranging the Hall plate on the edge of the main body of the circuit board, the Hall plate is more reliable in fixation and more stable in position, so that the reliability is higher; meanwhile, the distance between the Hall piece and the magnetic device can be accurately adjusted by adjusting the position of the circuit board, so that the distance adjustment between the Hall piece and the magnetic device is easier to control and realize.

In the above technical scheme, the number of the hall pieces is a plurality of the hall pieces, and the hall pieces are uniformly distributed around the rotation axis of the magnetic device.

The number of the Hall pieces is multiple, the Hall pieces are uniformly distributed around the rotation axis of the magnetic device, so that the distances between the Hall pieces and the magnetic poles of the magnetic device are kept equal, the Hall pieces are convenient to arrange, and the sensitivity and the reliability of the product are further improved. As for the specific number of hall plates, adjustment can be made as needed.

In any of the above technical solutions, the magnetic device is a magnetic ring, and the magnetic ring has S poles and N poles alternately arranged.

The magnetic device is a magnetic ring, the magnetic ring is provided with S poles and N poles which are alternately arranged, and the S poles and the N poles are alternately arranged and are inherent to the magnetic ring, so that a magnetic field generated during rotation is very accurate, compared with a scheme of arranging a plurality of magnetic strips in a circumferential surface at intervals along the radial direction, the control error caused by the magnetic field change error generated by the magnetic device can be remarkably reduced, and the control sensitivity and the control reliability of the door opening and closing movement mechanism are further improved.

Of course, the magnetic device can also adopt the technical scheme that a plurality of magnetic strips are arranged in the circumferential surface at radial intervals, for example, the plurality of magnetic strips are embedded in the circumferential surface of a circular or annular magnetic disk in the radial direction, the magnetic strips are distributed uniformly in the circumferential direction from the center to the periphery in a scattering mode in the magnetic disk, the diameters of the magnetic disks are as large as possible, so that more magnetic strips can be embedded in the magnetic disk, the more the number of magnetizing strips is, the higher the precision of detecting the rotating speed is, and the better the effect is. The present invention can be achieved without departing from the spirit and scope of the invention, and therefore, the present invention is also intended to be within the scope of the present invention.

In any of the above technical solutions, the motor base includes an upper cover and a lower cover, the upper cover and the lower cover are mutually covered to form an installation space, the driving motor and the magnetic device are located in the installation space, and the magnetic device is located on the upper side of the driving motor; the circuit board is arranged on the upper cover, is positioned on the outer side of the installation space and is arranged close to the notch; and/or when the magnetic device rotates at a constant speed, a uniformly-changed magnetic field is generated and is sensed by the circuit board, and the controller controls the driving motor to keep the original speed; when the magnetic device rotates at a non-uniform speed, a non-uniformly changed magnetic field is generated and is sensed by the circuit board, and the controller controls the driving motor to stop running or reverse running; and/or, the transmission device comprises a driving gear, a driven gear meshed with the driving gear and a rack block meshed with the driven gear, the driving gear is fixedly connected with the output shaft, the magnetic device is fixedly arranged on the driving gear, and the rack block is connected with the switch door.

The motor seat comprises an upper cover and a lower cover which are mutually covered, the driving motor and the magnetic device are fixedly arranged in an installation space between the upper cover and the lower cover, good protection effect is achieved on the driving motor and the magnetic device, and stability of the driving motor and the magnetic device is guaranteed; the upper cover is provided with a notch corresponding to the magnetic device, so that at least one part of the magnetic device can be exposed outside, and the circuit board is fixedly arranged on the upper cover and is arranged close to the notch, thereby ensuring that the circuit board can sensitively sense the magnetic field change generated when the magnetic device rotates; meanwhile, the circuit board is arranged on the outer side of the installation space, so that wiring between the circuit board and the controller and/or other structures is facilitated. As for the transmission device, part of the structure (such as a driving gear, a transmission gear and a rack part of a rack block) is positioned between the upper cover and the lower cover and is matched with the driving motor, and part of the structure (such as a part of the rack connected with the switch door) also extends to the outside of the motor seat and is used for connecting the switch door.

It should be noted that the number of the driving motor, the transmission device, the magnetic device and the circuit board may be plural. Such as: when two switch doors are arranged, the driving motor, the transmission device, the magnetic device and the circuit board are matched to form two sets, so that the two switch doors are respectively driven to move, but the two switch doors can be arranged on one motor base.

Through magnetic field induction, the controller controls the driving motor to stop running or reverse running after being blocked by foreign matters or clamped to the hands, thereby ensuring the safe running of the equipment and protecting the safety of users.

Such as: for the technical scheme that the magnetic device is a magnetic ring and the induction element is a Hall plate, when the Hall plate alternately meets the S pole and the N pole of the magnetic ring, a regular current signal can appear; when the switch door is normally opened or closed, namely the driving motor is normally operated, the magnetic ring is driven to rotate at a constant speed, and a current signal with the strength regularly changed can be detected through the Hall piece; when the clamping condition occurs, the rotation of the driving motor is blocked, the magnetic ring stops rotating, a single or strong or weak unchanged current signal is detected through the Hall plate, the door opening and closing movement is blocked according to the feedback of the current signal, the phenomenon of clamping is judged, and at the moment, the controller gives a command for stopping the operation or reversing the operation of the driving motor, so that the function of preventing clamping is achieved.

The transmission device comprises a driving gear, a driven gear and a rack block, and adopts gear transmission, so that accurate transmission can be realized, and meanwhile, the switching speed of a door can be controlled according to the transmission ratio; the magnetic device is fixedly arranged on the driving gear, so that the magnetic device is sensed by the circuit board, and the direct control of the controller on the driving motor is realized. Of course, the magnetic means may also be directly fixed to the output shaft of the drive motor, which is also within the scope of the invention.

The technical scheme of the second aspect of the invention provides an air conditioner, which comprises: a body; the switch door is arranged on the machine body; and a door opening and closing movement mechanism according to any one of the first aspect, wherein a transmission device is connected to the door opening and closing.

The air conditioner provided by the second aspect of the present invention includes the door opening and closing movement mechanism according to any one of the first aspect, so that the air conditioner has all the advantages of any one of the above technical aspects, and will not be described herein.

Optionally, the two switch doors are left and right, are double door air conditioners, are respectively arranged on the two transmission devices, and are respectively driven by the two transmission devices to be close to or far away from each other.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic top view of a door opening and closing motion mechanism according to some embodiments of the present invention;

FIG. 2 is a schematic rear view of the door opening and closing mechanism of FIG. 1;

FIG. 3 is a schematic view of the bottom view of the door opening and closing mechanism of FIG. 1;

FIG. 4 is a schematic left-hand view of the door opening and closing mechanism of FIG. 1;

FIG. 5 is a schematic diagram of a right-side view of the door opening and closing movement mechanism shown in FIG. 1;

FIG. 6 is a schematic diagram illustrating the cooperation of a door opening and closing movement mechanism and a door opening and closing according to some embodiments of the present invention;

FIG. 7 is a schematic view showing a partial structure of an air conditioner according to some embodiments of the present invention;

fig. 8 is a schematic view showing a partial structure of an air conditioner according to another view angle of some embodiments of the present invention.

Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 8 is:

The door opening and closing mechanism comprises a door opening and closing movement mechanism 1, a motor cabinet 10, an upper cover 11, a clamping seat 111, a connecting plate 1111, a supporting plate 1112, a clamping protrusion 1113, a 1114 avoiding gap, a supporting column 112, a lower cover 12, a driving motor 20, a driving gear 31, a magnetic ring 40, a circuit board 50, a door opening and closing door 2 and a machine body 3.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

A door opening and closing movement mechanism and an air conditioner according to some embodiments of the present invention will be described with reference to fig. 1 to 8.

As shown in fig. 1 to 5, an embodiment of a first aspect of the present invention provides a door opening and closing movement mechanism 1, including: motor mount 10, drive motor 20, controller, transmission, magnetic device and circuit board 50.

Specifically, the driving motor 20 is mounted on the motor housing 10; the controller is electrically connected with the driving motor 20 and is used for controlling the driving motor 20 to work; the transmission device is connected with an output shaft of the driving motor 20 and is used for driving the switch door 2 to move within a preset range; the magnetic device is arranged on the transmission device or the output shaft, can rotate along with the rotation of the output shaft, and generates a changing magnetic field according to the change of the rotating speed; the circuit board 50 is electrically connected with the controller, and can sense the change of the magnetic field generated by the magnetic device during rotation, and convert the sensed change of the magnetic field into an electric signal to be transmitted to the controller, so that the controller controls the driving motor 20 to work according to the electric signal; wherein the circuit board 50 is arranged on the axial side of the magnetic device and is offset from the axis of rotation of the magnetic device.

In the door opening and closing movement mechanism 1 provided by the embodiment of the first aspect of the present invention, the magnetic device can rotate along with the rotation of the output shaft of the driving motor 20, and can generate a changing magnetic field according to the change of the rotation speed, the circuit board 50 can induce the change of the magnetic field, and convert the signal into an electric signal according to the change of the magnetic field to be transmitted to the controller, and the controller controls the driving motor 20 to work, so that the driving motor 20 drives the door opening and closing 2 to act. Thus, when a foreign object or a human hand stops the normal switch of the switch door 2, the rotation speed of the driving motor 20 is disturbed, so that the rotation speed of the driving motor is changed, and the magnetic device rotates along with the rotation of the motor, so that the change of the magnetic field of the magnetic device also changes along with the change of the rotation speed, and the magnetic field is sensed by the circuit board 50 and then can be transmitted to the controller to control the driving motor 20, so that the operation of the driving motor 20 is changed, and the function of preventing the clamping hand is realized; meanwhile, the circuit board 50 is disposed at the axial side of the magnetic device and offset from the rotation axis of the magnetic device, that is: the circuit board 50 is arranged on the outer side of the axial direction of the magnetic device and is not coaxial with the magnetic device, so that a part of area of the circuit board 50 can be even located on the outer side of the radial direction of the magnetic device, compared with the embodiment in which the circuit board 50 is coaxial with the magnetic device, the arrangement range of the induction element on the circuit board 50 is remarkably increased, the distance between the induction element and the magnetic pole of the magnetic device is conveniently and reasonably controlled, the distance between the induction element and the magnetic pole of the magnetic device is shortened as much as possible on the basis that the circuit board 50 cannot contact the magnetic device, the sensitivity of the circuit board 50 for inducing magnetic field changes is improved, and the sensitivity and reliability of the door opening and closing movement mechanism 1 are further improved; in addition, compared with the embodiments in which the circuit board 50 is disposed coaxially with the magnetic device and the circuit board 50 is disposed on the radial side of the magnetic device, other electrical components on the circuit board 50 can be far away from the magnetic device, so that the magnetic device is prevented from interfering with other electrical components on the circuit board 50, friction and the like caused by too close distance between the circuit board 50 and the magnetic device are avoided as much as possible, and the use reliability of the circuit board 50 is further improved.

It should be noted that the controller may be a separately provided controller for controlling the door opening and closing movement mechanism 1; or can be integrally installed on a main control board of the equipment, such as an air conditioner, and directly installed on the main control board of the air conditioner so as to control the operation of the driving motor 20; the control mode is that the controller rotates forward, rotates reversely or stops.

Further, the magnetic device is in a circular shape or a ring shape and is coaxially connected with the driving motor 20, the motor base 10 is provided with a clamping base 111, and the circuit board 50 is fixedly installed on the clamping base 111, as shown in fig. 1 and 2.

The magnetic device is in a circular shape or a circular ring shape, is coaxially connected with the driving motor 20, can be directly connected or indirectly connected, is beneficial to the rotation movement of the magnetic device under the driving of the driving motor 20 and is beneficial to the generation of a uniform magnetic field; the motor base 10 is provided with the clamping base 111, and the circuit board 50 is fixedly arranged on the clamping base 111, so that the stability of the position of the circuit board 50 is ensured, and the use reliability of the circuit board 50 is further ensured.

Further, the card holder 111 is provided with a card slot, and the circuit board 50 is clamped in the card slot, as shown in fig. 1.

A clamping groove is formed in the clamping seat 111, and the circuit board 50 is clamped in the clamping groove, so that the assembly process of the circuit board 50 is simple and quick; the distance between the circuit board 50 and the magnetic device can be reasonably controlled by adjusting the position of the clamping groove, and coarse adjustment is carried out on the distance between the induction element and the magnetic pole of the magnetic device; the thickness of the circuit board 50 can be adapted by adjusting the size of the clamping groove, so that the distance between the induction element and the magnetic pole of the magnetic device can be finely adjusted; by combining coarse tuning with fine tuning, the inductive element on the circuit board 50 is easily adjusted to a more optimal position (e.g., to a position that is even closer to the magnetic device by a radial distance of 1 mm), thereby further improving the sensitivity and reliability of the circuit board 50 and achieving a more optimal anti-pinch performance.

Specifically, the clamping base 111 includes a connecting plate 1111 connected to the motor base 10, and a support plate 1112 and a press protrusion 1113 connected to two ends of the connecting plate 1111 in the width direction, wherein the press protrusion 1113 is disposed opposite to the support plate 1112, as shown in fig. 1, such that a clamping groove is defined among the connecting plate 1111, the support plate 1112 and the press protrusion 1113.

The clamping seat 111 comprises a connecting plate 1111, a supporting plate 1112 and a pressing protrusion 1113, wherein the connecting plate 1111 is connected with the motor seat 10 to realize the fixed connection of the clamping seat 111 and the motor seat 10; the supporting plate 1112 is connected with one end of the connecting plate 1111 in the width direction to form a structure with an L-shaped cross section, the pressing protrusion 1113 is connected with the other end of the connecting plate 1111 in the width direction and is opposite to the supporting plate 1112, so that a clamping groove is defined among the connecting plate 1111, the supporting plate 1112 and the pressing protrusion 1113, the cross section of the clamping groove is U-shaped at the position of the pressing protrusion 1113 opposite to the supporting plate 1112, and the edge part of the circuit board 50 is inserted into the clamping groove, so that the circuit board 50 can be fixed, and the assembly is very convenient; meanwhile, the structure of the clamping seat 111 is simpler, the volume is smaller, and the processing and the forming are convenient.

Wherein one end of the connection plate 1111 in the length direction is connected to the motor base 10, and the other end of the connection plate 1111 in the length direction extends in a direction away from the rotation axis of the magnetic device, as shown in fig. 1 and 2.

One end of the connecting plate 1111 in the length direction is connected to the motor base 10, and the other end extends in a direction away from the rotation axis of the magnetic device, so that the circuit board 50 mounted on the card base 111 also extends in a direction away from the rotation axis of the magnetic device, so that most of the structures of the circuit board 50 are far away from the magnetic device, and the sensing element can be arranged at a position of the circuit board 50 close to the magnetic device, so as to shorten the distance between the sensing element and the magnetic pole of the magnetic device as much as possible, and simultaneously, other electrical components on the circuit board 50 are far away from the magnetic device as much as possible, so that interference with the magnetic device or interference caused by the magnetic device can be avoided, and the use reliability of the circuit board 50 is improved.

Preferably, the support plate 1112 and the press protrusion 1113 are disposed opposite to each other in an axial direction of the magnetic device, as shown in fig. 1, and an axial distance between the support plate 1112 and the magnetic device is smaller than an axial distance between the press protrusion 1113 and the magnetic device.

The support plate 1112 and the pressing protrusion 1113 are disposed opposite to each other along the axial direction of the magnetic device, and the board surface of the circuit board 50 is substantially perpendicular to the rotation axis of the magnetic device; because the circuit board 50 is located at the outer side of the axial direction of the magnetic device, the clamping seat 111 is correspondingly located at the outer side of the axial direction of the magnetic device, so that when the axial distance between the supporting plate 1112 and the magnetic device is smaller than the axial distance between the pressing protrusion 1113 and the magnetic device, the supporting plate 1112 is closer to the magnetic device, and because the supporting plate 1112 is in a continuous plate shape, the contact area with the circuit board 50 is relatively large, the circuit board 50 can be supported better, and the conditions of local contact friction and the like of the circuit board 50 and the magnetic device are avoided, so that the use reliability of the circuit board 50 is further improved.

Preferably, the length of the support plate 1112 is less than the length of the connection plate 1111 such that the cartridge 111 forms a relief notch 1114 at an end near the magnetic device, as shown in fig. 1.

As before, in order to reduce the distance between the sensing element and the magnetic pole of the magnetic device as much as possible, the sensing element is preferably disposed at the end of the circuit board 50 close to the magnetic device, so the length of the support plate 1112 is smaller than that of the connection plate 1111 to form the avoidance gap 1114 at the end of the card holder 111 close to the magnetic device, so that shielding of the card holder 111 to the end of the circuit board 50 close to the magnetic device can be reduced as much as possible, thereby reducing interference to the sensing element, and further improving sensitivity and reliability of the sensing element.

Further, the clamping base 111 further comprises a support column 112 fixedly connected with the support plate 1112 and the motor base 10, as shown in fig. 2.

As before, since one end of the length direction of the connecting plate 1111 is connected with the motor base 10, and the other end extends in a direction far away from the rotation axis of the magnetic device, so that the circuit board 50 mounted on the card base 111 also extends in a direction far away from the rotation axis of the magnetic device, most of the card base 111 and the circuit board 50 are suspended, so that the support column 112 is additionally arranged between the card base 111 and the motor base 10, the support column 112 can effectively support the card base 111 and the circuit board 50, thereby improving the stability of the card base 111 and the motor base 10, and further improving the sensitivity and stability of the whole induction element and the door opening and closing motion mechanism 1.

Preferably, the number of press-fit protrusions 1113 is plural, and the plurality of press-fit protrusions 1113 are spaced apart along the length direction of the connection plate 1111, as shown in fig. 1.

The number of the pressing protrusions 1113 is multiple, and the pressing protrusions 1113 are arranged at intervals along the length direction of the connecting plate 1111, so that continuity of clamping grooves is guaranteed, positioning effect is achieved on assembly of the circuit board 50, and the conditions of tilting, deflection and the like of the circuit board 50 in the assembly process are avoided; on the other hand, the plurality of parts of the assembled circuit board 50 can be pressed, so that the condition that the circuit board 50 cannot shake in the use process is guaranteed, the stability of the position of the circuit board 50 is improved, the distance between the induction element and the magnetic pole of the magnetic device is guaranteed to be stable, and the sensitivity and the reliability of the door opening and closing motion mechanism 1 are further improved. Preferably, the number of press protrusions 1113 is two, wherein one press protrusion 1113 is disposed opposite to one end of the support plate 1112 near the magnetic device, so as to ensure that the circuit board 50 does not tilt upward when passing through the position.

Preferably, the pressing protrusion 1113 is in a bar shape, its length direction is parallel to the width direction of the support plate 1112, and its length is greater than the width of the support plate 1112, as shown in fig. 1.

The pressing protrusion 1113 is in a strip shape, and the length direction of the pressing protrusion is parallel to the width direction of the supporting plate 1112, one side of the clamping groove for clamping the circuit board 50 is a continuous supporting plate 1112, and the other side of the clamping groove is provided with strip protrusions at intervals, so that the contact area between the clamping seat 111 and the circuit board 50 is effectively reduced, and excessive interference between the clamping seat 111 and the circuit board 50 is avoided; and the length that the pressfitting was lifted is greater than the width of backup pad 1112, has guaranteed that pressfitting protruding 1113 can play effectual pressfitting effect to circuit board 50 to avoid circuit board 50 to deviate from the draw-in groove easily, thereby improved the stability of circuit board 50 position.

Of course, the shape and number of the pressing protrusions 1113 are not limited to the above-mentioned scheme, for example, the pressing protrusions 1113 may also be elongated, and the length direction of the pressing protrusions is parallel to the length direction of the supporting plate 1112, and the number of the pressing protrusions is one, so as to form a continuous U-shaped groove structure; or the length direction of the pressing protrusion 1113 is parallel to the length direction of the connecting plate 1111, and the number of the pressing protrusions is a plurality of pressing protrusions to form a plurality of U-shaped groove structures … … which are arranged at intervals; the present invention can be achieved by these means without departing from the spirit and scope of the present invention, and therefore, the present invention is not limited to these means.

Further, the number of the two clamping seats 111 is two, the two clamping seats 111 are oppositely arranged, and two ends of the circuit board 50 are respectively clamped in clamping grooves on the two clamping seats 111, as shown in fig. 1.

The number of the clamping seats 111 is two, the two clamping seats 111 are arranged oppositely, and then the number of the clamping grooves is also two, and the two clamping grooves are arranged oppositely; because the circuit board 50 is generally rectangular, two opposite clamping grooves are formed, two ends of the circuit board 50 are inserted along the openings of the two clamping grooves, so that the two ends of the circuit board 50 are respectively clamped in the two clamping grooves, the circuit board 50 can be effectively fixed, and the assembly is very convenient; and the occurrence of the situation that the sensitivity and the reliability of the electric elements on the circuit board 50 are reduced due to the excessive interference between the clamping seat 111 and the circuit board 50 or the shielding of the circuit board 50 with an excessive area is avoided.

Preferably, the two clamping seats 111 are symmetrically arranged about the rotation axis of the magnetic device, the circuit board 50 is rectangular, and two ends of the circuit board in the length direction are respectively clamped in the two clamping grooves, as shown in fig. 1.

The two clamping seats 111 are symmetrically arranged about the rotation axis of the magnetic device, namely, the distances between the two clamping seats 111 and the rotation axis of the magnetic device are equal, so that the distances between the two ends of the circuit board 50 in the length direction and the center of the magnetic device are also equal, namely, the circuit board 50 is placed opposite to the magnetic device, the structure of the product is more regular, and the induction of the circuit board 50 to the magnetic field change is also facilitated.

Preferably, the length direction of the connection plate 1111 is perpendicular to the rotation axis of the magnetic device, as shown in fig. 1 and 2.

The length direction of the connecting plate 1111 is perpendicular to the rotation axis of the magnetic device, and then the board surface of the circuit board 50 is also perpendicular to the rotation axis of the magnetic device, so that the circuit board 50 is transversely arranged on the axial side surface of the magnetic device, interference of the circuit board 50 with other structures due to overhigh is avoided, the center of gravity of the circuit board 50 is lowered, and the two clamping grooves are more reliable in fixing the circuit board 50.

Further, the circuit board 50 includes a main body, which is located at the outer side of the axial direction of the magnetic device and is offset from the rotation axis of the magnetic device, and a hall plate (not shown) which is built in the main body to induce a change in the magnetic field generated by the magnetic device when the magnetic device is rotated, and whose plate surface is perpendicular to the rotation axis of the magnetic device.

The circuit board 50 comprises a main body and a Hall plate, wherein the main body is plate-shaped, is electrically connected with the controller, is arranged on the axial side surface of the magnetic device and deviates from the rotation axis of the magnetic device, and the plate surface of the main body is perpendicular to the rotation axis of the magnetic device; the Hall plate is used as an induction element for inducing the change of a magnetic field generated by the magnetic device, and has the advantages of high sensitivity, small volume, light weight, long service life, convenient installation, low power consumption, high frequency, shock resistance, dust and oil dirt resistance, water vapor resistance, salt fog resistance and other pollution or corrosion resistance and the like; compared with the scheme of arranging the Hall plate on the edge of the main body of the circuit board 50, the Hall plate is more reliable in fixation and more stable in position, so that the reliability is higher; meanwhile, the distance between the Hall plate and the magnetic device can be accurately adjusted by adjusting the position of the circuit board 50, so that the distance adjustment between the Hall plate and the magnetic device is easier to control and realize.

Preferably, the number of hall pieces is a plurality, the plurality of hall pieces being evenly distributed about the axis of rotation of the magnetic device.

Preferably, the magnetic means is a magnetic ring 40, as shown in fig. 1, the magnetic ring 40 having alternately arranged S-poles and N-poles.

The magnetic device is a magnetic ring 40, the magnetic ring 40 has alternately arranged S poles and N poles, and the alternately arranged S poles and N poles are inherent properties of the magnetic ring 40, so that a magnetic field generated during rotation is very accurate, compared with a scheme of arranging a plurality of magnetic strips in a circumferential surface at radial intervals, the control error caused by the magnetic field change error generated by the magnetic device can be remarkably reduced, and the control sensitivity and the control reliability of the door opening and closing motion mechanism 1 are further improved.

Alternatively, the magnetic device may also adopt an embodiment in which a plurality of magnetic strips are radially arranged in the circumferential surface at intervals, for example, a plurality of magnetic strips are radially embedded in the circumferential surface of a circular or annular magnetic disk, the magnetic strips are arranged in the magnetic disk in a scattering manner from the center to the periphery, the plurality of magnetic strips are uniformly distributed along the circumferential direction, the diameter of the magnetic disk is as large as possible, so that more magnetic strips can be embedded in the magnetic disk, the more the number of magnetizing strips is, the higher the precision of detecting the rotating speed is, and the better the effect is. The present invention can be achieved without departing from the spirit and scope of the invention, and therefore, the present invention is also intended to be within the scope of the present invention.

In any of the above embodiments, the motor base 10 includes the upper cover 11 and the lower cover 12, as shown in fig. 1 to 5, the upper cover 11 and the lower cover 12 are mutually covered to form an installation space, the driving motor 20 and the magnetic device are located in the installation space, and the magnetic device is located on the upper side of the driving motor 20; wherein, the upper cover 11 is provided with a notch corresponding to the magnetic device, so that the magnetic device is at least partially exposed, and the circuit board 50 is mounted on the upper cover 11, located outside the mounting space, and disposed adjacent to the notch.

The motor base 10 comprises an upper cover 11 and a lower cover 12 which are mutually covered, the driving motor 20 and the magnetic device are fixedly arranged in an installation space between the upper cover 11 and the lower cover 12, good protection effect is achieved on the driving motor 20 and the magnetic device, and stability is guaranteed; the upper cover 11 is provided with a notch corresponding to the magnetic device, so that at least one part of the magnetic device can be exposed outside, and the circuit board 50 is fixedly arranged on the upper cover 11 and is arranged close to the notch, thereby ensuring that the circuit board 50 can sensitively sense the magnetic field change generated when the magnetic device rotates; at the same time, the circuit board 50 is disposed outside of the mounting space, facilitating routing between the circuit board 50 and the controller and/or other structures. As for the transmission device, part of its structure (such as a driving gear 31, a driving gear and a rack portion of a rack block) is located between the upper cover 11 and the lower cover 12, and is matched with the driving motor 20, and part of its structure (such as a portion where the rack is connected to the switch door 2) also extends to the outside of the motor base 10 for connecting the switch door 2.

It should be noted that the number of the driving motor 20, the transmission device, the magnetic device and the circuit board 50 may be plural. Such as: when two switch doors 2 are provided, the driving motor 20+the transmission device+the magnetic device+the circuit board 50 are matched into two sets to respectively drive the two switch doors 2 to move, but can be installed on one motor base 10, as shown in fig. 1 to 3.

In any of the above embodiments, when the magnetic device rotates at a constant speed, a uniformly varying magnetic field is generated and induced by the circuit board 50, and the controller controls the driving motor 20 to keep the original speed; when the magnetic device rotates unevenly, a unevenly varying magnetic field is generated and sensed by the circuit board 50, and the controller controls the driving motor 20 to stop or reverse operation.

The driving motor 20 is controlled by the controller to stop operation or reverse operation after being blocked by foreign matters or clamped to the hand through magnetic field induction, so that the safe operation of the equipment is ensured, and the safety of a user is protected.

Such as: for the embodiment in which the magnetic device is the magnetic ring 40 and the sensing element is the hall plate, when the hall plate alternately meets the S pole and the N pole of the magnetic ring 40, a regular current signal will appear; when the door 2 is normally opened and closed, namely the driving motor 20 is normally operated, the magnetic ring 40 is driven to rotate at a constant speed, and a current signal with the intensity regularly changed can be detected through the Hall plate; when the pinching is occurred, the rotation of the driving motor 20 is blocked, the magnetic ring 40 stops rotating, a single or strong or weak unchanged current signal is detected through the Hall plate, the movement of the switch door 2 is blocked according to the feedback of the current signal, the pinching is judged, and at the moment, the controller gives a command for stopping the operation or reversing the operation of the driving motor 20, so that the pinching prevention function is realized.

In any of the above embodiments, the transmission device includes a driving gear 31, a driven gear meshed with the driving gear 31, and a rack block meshed with the driven gear, the driving gear 31 is fixedly connected with the output shaft, the magnetic device is fixedly mounted on the driving gear 31, and the rack block is connected with the switch door 2.

The transmission device comprises a driving gear 31, a driven gear and a rack block, and adopts gear transmission, so that accurate transmission can be realized, and meanwhile, the switching speed of the switch door 2 can be controlled according to the transmission ratio; the magnetic device is fixedly arranged on the driving gear 31, so that the induction of the circuit board 50 to the magnetic device is facilitated, and the direct control of the controller to the driving motor 20 is realized. Of course, the magnetic means may also be directly fixed to the output shaft of the drive motor 20, which is also within the scope of the present invention.

As shown in fig. 6 to 8, an embodiment of a second aspect of the present invention provides an air conditioner, comprising: the body 3, the door 2 and the door opening and closing movement mechanism 1 according to any one of the embodiments of the first aspect.

Specifically, the opening and closing door 2 is mounted on the body 3; the transmission of the door opening and closing movement mechanism 1 is connected with the door opening and closing 2 as shown in fig. 6.

The air conditioner provided by the embodiment of the second aspect of the present invention includes the door opening and closing movement mechanism 1 according to any one of the embodiments of the first aspect, so that the air conditioner has all the advantages of any one of the embodiments described above, and will not be described herein.

Optionally, the two switch doors 2 are left and right, are double door air conditioners, are respectively arranged on the two transmission devices, and are respectively driven by the two transmission devices to approach or separate from each other.

In summary, according to the door opening and closing motion mechanism provided by the invention, the magnetic device can rotate along with the rotation of the output shaft of the driving motor, and can generate a variable magnetic field according to the change of the rotation speed, the circuit board can sense the change of the magnetic field, and convert the signal into an electric signal according to the change of the magnetic field to be transmitted to the controller, and the controller controls the driving motor to work, so that the driving motor drives the door opening and closing motion. Therefore, when foreign matters or hands stop the normal switch of the switch door, the rotation speed of the driving motor is disturbed, so that the rotation speed of the driving motor is changed, and the magnetic device rotates along with the rotation of the motor, so that the change of the magnetic field of the magnetic device also changes along with the change of the rotation speed, and the magnetic field is sensed by the circuit board and then can be transmitted to the controller to control the driving motor so as to change the operation of the driving motor, thereby realizing the function of preventing the clamping hand; meanwhile, the circuit board is arranged on the axial side of the magnetic device and is offset from the rotation axis of the magnetic device, namely: the circuit board is arranged on the outer side of the axial direction of the magnetic device and is not coaxially arranged with the magnetic device, so that a part of area of the circuit board can be even located on the outer side of the radial direction of the magnetic device, compared with the technical scheme that the circuit board and the magnetic device are coaxially arranged, the arrangement range of the induction element on the circuit board is remarkably increased, the distance between the induction element and the magnetic pole of the magnetic device is conveniently and reasonably controlled, the distance between the induction element and the magnetic pole of the magnetic device is shortened as much as possible on the basis that the circuit board cannot be contacted with the magnetic device, the sensitivity of the induction magnetic field change of the circuit board is improved, and the sensitivity and the reliability of the door opening and closing movement mechanism are further improved; in addition, compared with the technical scheme that the circuit board and the magnetic device are coaxially arranged and the circuit board is arranged on the radial side face of the magnetic device, other electric elements on the circuit board can be far away from the magnetic device, so that the magnetic device is prevented from interfering with other electric elements on the circuit board, friction and the like caused by too short distance between the circuit board and the magnetic device are avoided as much as possible, and the use reliability of the circuit board is further improved.

In the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A door opening and closing movement mechanism, comprising:

A motor base;

The driving motor is arranged on the motor seat;

the controller is electrically connected with the driving motor and used for controlling the driving motor to work;

the transmission device is connected with an output shaft of the driving motor and used for driving the switch door to move in a preset range;

A magnetic device mounted on the transmission device or the output shaft, capable of rotating with the rotation of the output shaft, and generating a changing magnetic field according to the change of the rotation speed;

The circuit board is electrically connected with the controller, can sense the change of the magnetic field generated by the magnetic device during rotation, and converts the sensed change of the magnetic field into an electric signal to be transmitted to the controller, so that the controller controls the driving motor to work according to the electric signal;

Wherein the circuit board is arranged on the axial side surface of the magnetic device and deviates from the rotation axis of the magnetic device;

the circuit board comprises a main body and a Hall piece, wherein the Hall piece is arranged on the main body and is used for inducing the change of a magnetic field generated by the magnetic device during rotation;

the main body is positioned on the outer side of the axial direction of the magnetic device and deviates from the rotation axis of the magnetic device, and the plate surface of the main body is perpendicular to the rotation axis of the magnetic device;

The motor base comprises an upper cover and a lower cover, the upper cover and the lower cover are mutually covered to form an installation space, the driving motor and the magnetic device are positioned in the installation space, and the magnetic device is positioned on the upper side of the driving motor; the circuit board is arranged on the upper cover, is positioned on the outer side of the installation space and is arranged close to the notch;

when the magnetic device rotates at a constant speed, a uniformly-changed magnetic field is generated and is induced by the circuit board, and the controller controls the driving motor to keep the original speed; when the magnetic device rotates at a non-uniform speed, a non-uniformly changed magnetic field is generated and is sensed by the circuit board, and the controller controls the driving motor to stop running or reverse running;

The driving device comprises a driving gear, a driven gear meshed with the driving gear and a rack block meshed with the driven gear, the driving gear is fixedly connected with the output shaft, the magnetic device is fixedly arranged on the driving gear, and the rack block is connected with the switch door.

2. The door opening and closing movement mechanism according to claim 1, wherein,

The magnetic device is round or annular and is coaxially connected with the driving motor, a clamping seat is arranged on the motor seat, and the circuit board is fixedly arranged on the clamping seat.

3. The door opening and closing movement mechanism according to claim 2, wherein,

The clamping seat is provided with a clamping groove, and the circuit board is clamped in the clamping groove.

4. The door opening and closing movement mechanism according to claim 3, wherein,

The clamping seat comprises a connecting plate connected with the motor seat, and a supporting plate and a pressing protrusion which are respectively connected with two ends of the connecting plate in the width direction, wherein the pressing protrusion is arranged opposite to the supporting plate, so that the clamping groove is defined between the connecting plate, the supporting plate and the pressing protrusion.

5. The door opening and closing movement mechanism according to claim 4, wherein,

One end of the connecting plate in the length direction is connected with the motor base, and the other end of the connecting plate in the length direction extends in the direction away from the rotating axis of the magnetic device.

6. The door opening and closing movement mechanism according to claim 5, wherein,

The support plate and the pressing protrusion are oppositely arranged along the axial direction of the magnetic device, and the axial distance between the support plate and the magnetic device is smaller than the axial distance between the pressing protrusion and the magnetic device.

7. The door opening and closing movement mechanism according to claim 6, wherein,

The length of the supporting plate is smaller than that of the connecting plate, so that the clamping seat forms an avoidance gap at one end close to the magnetic device.

8. The door opening and closing movement mechanism according to any one of claims 4 to 7, wherein,

The motor seat is also provided with a support column fixedly connected with the clamping seat; and/or

The number of the pressing protrusions is multiple, and the pressing protrusions are arranged at intervals along the length direction of the connecting plate; and/or

The pressing protrusions are strip-shaped, the length direction of the pressing protrusions is parallel to the width direction of the supporting plate, and the length of the pressing protrusions is larger than the width of the supporting plate.

9. The door opening and closing movement mechanism according to any one of claims 4 to 7, wherein,

The number of the clamping seats is two, the two clamping seats are oppositely arranged, and two ends of the circuit board are respectively clamped in the clamping grooves on the two clamping seats.

10. The door opening and closing movement mechanism according to claim 9, wherein,

The two clamping seats are symmetrically arranged about the rotation axis of the magnetic device, the circuit board is rectangular, and two ends of the circuit board in the length direction are respectively clamped in the two clamping grooves; and/or

The length direction of the connecting plate is perpendicular to the rotation axis of the magnetic device.

11. The door opening and closing movement mechanism according to claim 1, wherein,

The number of the Hall pieces is multiple, and the Hall pieces are uniformly distributed around the rotation axis of the magnetic device.

12. The door opening and closing movement mechanism according to any one of claims 1 to 7, wherein,

The magnetic device is a magnetic ring, and the magnetic ring is provided with S poles and N poles which are alternately arranged.

13. An air conditioner, comprising:

A body;

The switch door is arranged on the machine body; and

The door opening and closing movement mechanism as claimed in any one of claims 1 to 12, wherein a transmission device thereof is connected to the door opening and closing.