CN105222307B - Swing blade driving device and air conditioner - Google Patents

Abstract

The invention discloses a swing blade driving device and an air conditioner, wherein the swing blade driving device comprises a connecting rod crank, a sector gear and a driving assembly for driving the sector gear to rotate, wherein one end of the connecting rod crank is provided with two racks parallel to the length direction of the connecting rod crank, and the two racks are arranged at intervals; the sector gear is arranged between the two racks and is meshed with one rack; when the driving assembly drives the sector gear to rotate around the same direction, the sector gear is periodically and alternately meshed with the two racks to drive the connecting rod crank to do periodic reciprocating motion. The technical scheme of the invention prevents the connecting rod crank from bending deformation caused by a plurality of acting forces which are not on the same straight line, and ensures the reliability and effectiveness of the driving of the connecting rod crank.

Description

Swing vane drive and air conditioner

technical field

The invention relates to the technical field of air conditioning, in particular to a swing blade driving device and an air conditioner.

Background technique

The structure of the swing blade driving device of the existing air conditioner is as shown in Figure 1, is that motor 100 is installed on a motor base, and crank 200 is inserted on the rotating shaft of motor 100, and the rotating shaft of motor 100 rotates to drive crank 200 to rotate; There are limited cylinders 500 on both sides of the lower end of the crank 200 to limit the angle of rotation of the crank 200; there is a short pin 300 at the upper end of the crank 200, and the short pin 300 is inserted into the round hole at the head end of the connecting rod crank 400. When the crank 200 rotates, the connecting rod crank 400 is driven to Back and forth movement occurs in the horizontal direction; thus, the connecting rod crank 400 pulls the connecting rod 600 connected thereto, and the connecting rod 600 drives the swing blade 700 to swing to realize swinging wind.

In the existing pendulum blade drive mode, since the crank 200 is driven by the motor 100, the short pin 300 moves in a circle around the rotating shaft. The trajectory pulls the movement, so that the connecting rod crank 400 is subjected to multiple forces that are not in the same straight line direction. After a long time of use, the connecting rod crank 400 will be deformed, causing the swing angle of the connecting rod crank 400 to drive the swing blade 700 to become smaller, and even drive failure etc.

Contents of the invention

The main purpose of the present invention is to provide a swing vane drive device, which aims at preventing the deformation of the connecting rod crank.

In order to achieve the above object, the swing blade driving device proposed by the present invention includes a connecting rod crank, a sector gear and a driving assembly for driving the sector gear to rotate. One end of the connecting rod crank is provided with two connecting rods. A rack parallel to the length direction of the crank, the two racks are arranged at intervals; the sector gear is arranged between the two racks and meshes with one of the racks; when the drive assembly drives the sector gear When rotating in the same direction, the sector gear meshes alternately with the two racks periodically, driving the connecting rod crank to move back and forth periodically

Preferably, the diameter of the dedendum circle of the sector gear is equal to the distance between the tooth tops of the two racks.

Preferably, one end of the two racks that is not connected to the connecting rod crank is connected together via a connecting arm.

Preferably, a limit block is fixed on one side of the sector gear, and a limit protrusion is provided on the edge of the limit block; a limit needle is provided around the limit block on the mounting base, so The first end of the limit pin is rotatably connected to the mounting base, and the rotation axis of the limit pin is parallel to the axis of the sector gear; the mounting base is provided with a The stop part, the mounting seat is also provided with an elastic member that exerts an elastic force on the stop pin in the direction of the stop part, and the stop pin is elastically abutted against the stop part; The distance between the limiting protrusion and the axis of the sector gear is greater than the distance between the second end of the limit pin and the axis of the sector gear.

Preferably, the mounting seat is provided with a boss parallel to the axis of the sector gear, the first end of the limit pin is provided with an axis hole adapted to the boss, and the limit pin It is sleeved on the boss through the shaft hole to be rotatably connected with the mounting base.

Preferably, the elastic member is a torsion spring sleeved on the boss and located between the limiting needle and the mounting seat; one end of the torsion spring is fixed to the limiting needle, and the other end is connected to the limiting needle. The mount is fixed.

Preferably, a mounting seat is also included, and the driving assembly is arranged on the mounting seat.

Preferably, the driving assembly includes a driving gear, a driven gear meshing with the driving gear, and a motor fixed on the mounting seat, the driving gear is sleeved on the rotating shaft of the motor, and the driven gear is The gear is rotatably connected to the mounting seat, and the sector gear is coaxially and fixedly connected to the driven gear.

Preferably, the connecting rod crank is provided with a guide groove parallel to the rack, and the mounting seat is provided with a guide rib stuck in the guide groove, when the drive assembly drives the sector gear to rotate , the connecting rod crank periodically reciprocates in a direction parallel to the rack, and the guide slot slides relative to the guide rib.

The present invention also proposes an air conditioner, including a swing leaf and a drive device for the swing leaf. The drive device for the swing leaf includes a connecting rod crank, a sector gear, and a drive assembly for driving the sector gear to rotate. One end of the connecting rod crank is provided with There are two racks arranged in parallel; the sector gear is arranged between the two racks and meshes with one of the racks; when the drive assembly drives the sector gears to rotate in the same direction, the sector gears It is periodically and alternately meshed with the two racks, and drives the connecting rod crank to move back and forth periodically in a direction parallel to the racks.

The technical scheme of the present invention uses the driving assembly to drive the sector gear to rotate in one direction, so that the sector gear and the two racks are alternately meshed periodically, thereby driving the connecting rod crank to reciprocate in its length direction, and when applied to drive the swing blade, drive The swing blade swings back and forth; the present invention only applies force in the length direction of the connecting rod crank to drive the reciprocating motion of the connecting rod crank, which prevents the connecting rod crank from being caused by multiple acting forces that are not on the same straight line. The occurrence of bending deformation ensures the reliability and effectiveness of the connecting rod crank drive.

Description of drawings

Fig. 1 is a structural schematic diagram of a swing blade drive device in the prior art;

Fig. 2 is a schematic structural view of a preferred embodiment of the swing blade driving device of the present invention;

Figure 3 is an exploded view of a preferred embodiment of the swing blade drive device of the present invention

Fig. 4 is the enlarged schematic view of position A in Fig. 2;

Fig. 5 is a partial structural schematic diagram of a preferred embodiment of the swing blade driving device of the present invention;

Fig. 6 is a structural schematic diagram of a gear box in a preferred embodiment of the swing blade driving device of the present invention;

Fig. 7 is a schematic structural view of the gear box cover in a preferred embodiment of the swing blade driving device of the present invention;

Fig. 8 is a structural schematic diagram of the connection between the swing vane driving device, the connecting rod and the swing vane in a preferred embodiment of the air conditioner of the present invention.

Description of background technology reference numerals:

label name label name 100 motor 200 crank 300 short sale 400 connecting rod crank 500 limit cylinder 600 link 700 Swing leaves

DETAILED DESCRIPTION OF THE DRAWINGS:

label name label name 10 connecting rod crank 20 sector gear 30 drive components 50 limit needle 60 gear part 70 link

80 Swing leaves 11 rack 12 connecting arm 13 The guide groove twenty one limit block 211 limit protrusion 31 motor 311 shaft 32 driving gear 33 driven gear 41 Motor mount 42 gear box 43 gear case cover 421 Cylindrical shaft 422 Avoid vias 423 gap 424 Boss 431 tablet 432 Via D. guide rib T Boss

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The present invention proposes a swing vane driving device, which is applied in an air conditioner and is used for connecting with a connecting rod that drives the swing vane to drive the swinging wind of the swing vane.

Referring to Fig. 2 and Fig. 3, in the embodiment of the present invention, the swing blade driving device includes a connecting rod crank 10, a sector gear 20 and a drive assembly 30 for driving the sector gear 20 to rotate, and one end of the connecting rod crank 10 is provided with two A rack 11 parallel to the length direction of the connecting rod crank 10 (i.e. the X-axis direction in FIG. 2 ), two racks 11 are arranged at intervals; The gears 11 mesh (that is, the sector gear 20 mainly acts on any one of the racks 11 each time); when the drive assembly 30 drives the sector gear 20 to rotate in the same direction, the sector gear 20 and the two racks 11 are periodically meshed alternately, and the drive chain The rod crank 10 periodically reciprocates in the direction parallel to the rack 11 . In this embodiment, the driving component 30 may be directly a driving motor, which is connected to the sector gear 20 through the driving motor, or may include other transmission components, through which the driving motor is connected to the sector gear 20 and so on. For the convenience of description, the two parallel racks 11 are respectively marked as the first rack and the second rack here. When the drive assembly 30 drives the sector gear 20 to rotate in the same direction, the sector gear 20 meshes with the first rack to drive The first rack moves to the first direction (for example, X+ direction) of the parallel rack 11, and the sector gear 20 meshes with the second rack to drive the second rack to the second direction (opposite to the first direction) of the parallel rack. direction X-direction), that is, when the sector gear 20 is meshed with different racks 11, it drives the connecting rod crank 10 to move back and forth on its length; It moves back and forth in the length direction (X-axis direction), thereby driving the back and forth swing wind of the swing blade through the connecting rod.

The technical solution of this embodiment uses the driving assembly 30 to drive the sector gear 20 to rotate in one direction, so that the sector gear 20 and the two racks 11 are periodically and alternately meshed, thereby driving the connecting rod crank 10 to move back and forth in its length direction. When driving the swing blade, it drives the swing blade back and forth to swing the wind; in the scheme of this embodiment, only an active force is applied on the length direction of the connecting rod crank 10 to drive the reciprocating motion of the connecting rod crank 10, which prevents the connecting rod crank 10 from being affected by the absence of Multiple acting forces on the same straight line cause the bending deformation of the connecting rod crank 10 to ensure the reliability and effectiveness of driving the connecting rod crank 10 .

In this embodiment, it is preferable to adopt the same number of teeth on the two racks 11 and set them facing one by one, and the number of teeth on the sector gear 20 is less than the number of teeth on the rack 11, so that the distance that the sector gear 20 drives the two racks 11 to move is exactly the same , that is, the left and right swing angles of the swing blade driven by the connecting rod crank 10 are exactly the same. Specifically, in this embodiment, the number of teeth on the sector gear 20 is 4 and the number of teeth on the rack 11 is 5 as an example.

Furthermore, in order to make the transmission between the sector gear 20 and the rack 11 difficult to produce offset and looseness in the direction perpendicular to the transmission direction and ensure a better transmission effect, this embodiment preferably adopts the dedendum of the sector gear 20 The diameter of the circle is equal to the distance between the tooth tops of the two racks 11, that is, the sector gear 20 is always clamped between the two racks 11 during rotation, thereby avoiding the loosening between the sector gear 20 and the rack 11 occur.

Further, referring to FIG. 2 , in this embodiment, the ends of the two racks 11 that are not connected to the connecting rod crank 10 are preferably connected together through a connecting arm 12, and the two racks 11 are mutually strengthened by the action of the connecting arm 12. , and ensure the tightness of meshing with the sector gear 20, and prevent the two racks 11 from bending and deforming backwards. In this embodiment, the connecting arm 12 is preferably integrally formed with the two racks 11, so as to better strengthen the strength of the two racks 11; of course, in other embodiments, the connecting arm 12 and the two racks 11 can also be detachably connected. .

Further, the swing blade driving device of this embodiment also includes a mounting base (not labeled), on which the driving assembly 30 is arranged, through which the swing blade driving device can be easily installed on the air conditioner as a whole, improving installation efficiency.

Further, referring to Fig. 2, Fig. 4 and Fig. 5, in this embodiment, a limit block 21 is fixed on one side of the sector gear 20, and a limit protrusion 211 is provided on the edge of the limit block 21; A limit pin 50 is arranged around the block 21, and the first end of the limit pin 50 is rotatably connected with the mounting base. The rotation axis of the limit pin 50 is parallel to the axis of the sector gear 20; The stop part 60 on one side of 50 is also provided with an elastic member that applies an elastic force to the stop part 60 to the stop pin 50 on the mounting seat, and the stop pin 50 elastically abuts against the stop part 60; The distance between the protrusion 211 and the axis of the sector gear 20 is greater than the distance between the second end of the limit pin 50 and the axis of the sector gear 20, that is, during the rotation of the sector gear 20, when the position limit protrusion 211 rotates When reaching the limit pin 50 , the limit protrusion 211 will collide with the limit pin 50 . In this embodiment, when the position-limiting protrusion 211 is rotated to the position of the position-limiting needle 50, if the position-limiting protrusion 211 and the stop portion 60 are located on the same side of the position-limiting pin 50, the position-limiting protrusion 211 can place the The limit pin 50 moves away from the position of the limit pin 50 in the direction away from the gear part 60, so that the limit block 21 continues to rotate, that is, the sector gear 20 can continue to rotate in this direction without hindrance, that is, the current rotation The direction is the direction of rotation during normal working and driving; after the limit protrusion leaves the position of the limit pin 50 , the limit pin 50 returns to abut against the stop part 60 under the action of the elastic member. When the position-limiting protrusion 211 rotates to the position of the position-limiting pin 50, if the position-limiting protrusion 211 and the stop portion 60 are located on different sides of the position-limiting pin 50, the position-limiting pin 50 is held up by the position portion 60. It cannot be moved, so the limit pin 50 blocks the limit protrusion 211, preventing the limit block 21 from continuing to rotate, that is, the sector gear 20 cannot continue to rotate in the current direction, that is, the current rotation direction is the opposite direction of the normal working driving direction . In this embodiment, it is preferable that the limiting block 21 is a circular block, and the limiting protrusion 211 is a right-angled protrusion provided on the limiting block 21 as an example.

In this embodiment, by setting the limit cooperation between the limit needle 50 and the limit protrusion 211, the sector gear 20 can rotate in the direction opposite to the working driving direction for initial reset, that is, during the initial reset, the drive assembly 30 drives the sector gear 20 Rotate until the limit projection 211 abuts against the limit pin 50 and locks, at this time the corresponding connecting rod crank 10 is located at a fixed driving position (for example, the position of the swing leaf is in the middle or the position of the swing leaf is at the far left or right, etc.) , the driving position can be used as the initial driving position, through the initial driving position, it can be checked whether the swing blade has shifted. It should be noted that in other embodiments, two limiting protrusions 211 may also be provided on the limiting block 21 , and the two limiting protrusions 211 are respectively arranged at symmetrical positions on a line passing through the axis of the sector gear 20 .

Specifically, referring to FIG. 2 and FIG. 5 and referring to FIG. 6 , the mounting seat is provided with a boss T parallel to the axis of the sector gear 20 , and the first end of the limit pin 50 is provided with a As for the shaft hole, in this embodiment, the limiting pin 50 is preferably sleeved on the boss T through the shaft hole to be rotatably connected with the mounting seat. The side of the second end of the limit pin 50 facing the gear part 60 is preferably an arc-shaped surface, which reduces the resistance to the rotation of the sector gear 20 in the normal working driving direction, and the second end of the limit pin 50 faces away from the gear part One side of 60 is preferably flat.

Preferably, the elastic member is a torsion spring (not shown) that is sleeved on the boss T and located between the limit pin 50 and the mounting seat; one end of the torsion spring is fixed to the limit pin 50, and the other end is connected to the mounting seat Fixed; after the limit pin 50 rotates away from the gear part 60 under the action of an external force, the torsion spring produces an elastic force that makes the limit pin 50 move toward the gear part 60, and the external force acting on the limit pin 50 When withdrawn, the torsion spring makes the limit needle 50 return to abut against the gear part 60 . Of course, in this embodiment, the limit pin 50 can also be connected to the mounting base in a rotational manner by setting the first end of the boss T to be plugged into the shaft hole on the mounting base; the elastic member can also be a Tension spring, such as the elastic member is a tension spring arranged on the side of the gear part, one end of the tension spring is fixed on the mounting seat, and the other end is fixed on the limit pin 50, when the limit pin 50 rotates away from the gear part 60, the The limit pin 50 generates a pulling force toward the stop portion 60 . In this embodiment, the gear part 60 of this embodiment is preferably a half-frame draw-in groove, and the opening of the lock-in groove faces the side of the limit pin 50 where the gear part 60 is not provided; of course, the gear part 60 can also be Bumps, hooks, etc.

Further, referring to FIG. 2 , since the connecting rod crank 10 has a certain length, and it moves with the entire connecting rod crank 10 through the rack 11 arranged at one end, it is easy to shake and affect the transmission effect; therefore, this embodiment A guide groove 13 parallel to the rack 11 is provided on the connecting rod crank 10, and a guide rib D stuck in the guide groove 13 is provided on the mounting base. When the drive assembly 30 drives the sector gear 20 to rotate, the connecting rod crank 10 periodically reciprocates in the direction parallel to the rack 11, and the guide groove 13 slides relative to the guide rib D; through the guiding cooperation between the guide rib D and the guide groove 13, the connecting rod crank 10 is more stable in the reciprocating movement and reduces shaking , to maintain a better transmission effect.

Further, the preferred driving assembly 30 in this embodiment includes a driving gear 32, a driven gear 33 meshing with the driving gear 32, and a motor 31 fixed on the mounting base. The driving gear 32 is sleeved on the rotating shaft 311 of the motor 31, and the driven gear 33 is rotatably connected to the mounting base, and the sector gear 20 is coaxially connected with the driven gear 33 and is fixedly connected. In this embodiment, the sector gear 20 and the driven gear 33 are preferably integrally formed. The driving assembly 30 of this embodiment drives the driving gear 32 to rotate through the motor 31, and the driving gear 32 drives the driven gear 33 to rotate, so that the sector gear 20 on the driven gear 33 rotates, and then drives the connecting rod crank 10 on the connecting rod crank Move back and forth in the length direction of 10. In addition, the driving assembly 30 of this embodiment can also be composed only of the motor 31 fixed on the mounting base, and the rotation shaft 311 of the motor 31 is coaxially connected with the sector gear 20 to directly drive the sector gear 20 to rotate.

Referring to FIG. 3 , the mounting base of this embodiment preferably consists of a motor base 41 , a gear box 42 and a gear box cover 43 . Specifically, with reference to FIGS. 5 to 7 , the motor base 41 is provided with a housing groove for accommodating the motor. The motor is installed in the housing groove and locked and fixed with the motor base 41 by screws. The rotating shaft of the motor passes through the gear box 42 It is connected with the driving gear 32 located in the gear box 42, and the inner bottom surface of the gear box 42 is provided with a cylindrical shaft 421 corresponding to the axial center of the driven gear 33, and the driven gear 33 is sleeved on the cylindrical shaft 421, and the limit pin 50 , the shift portion 60 and the boss T are all arranged on the inner bottom surface of the gear box 42 . In addition, the side wall of the gear box 42 is provided with a notch 423 for the rack 11 of the connecting rod crank 10 to extend into. The outer wall of the gear box 42 is provided with a boss 424 corresponding to the notch 423, and the guide rib D is arranged on the notch 423. On the platform 424; on the side wall of the gear box 42, the position corresponding to the connecting arm 12 between the two racks 11 is provided with an avoidance through hole 422, so that the avoidance through hole 422 can pass through the avoidance through hole 422 for the rack 11 in reciprocating motion without being caught. The side wall of the gear box 42 blocks, so that a more compact gear box 42 can be used. The gear box cover 43 is closed on the gear box 42, and the gear box cover 43 and the gear box 42 are locked by a plurality of screws, and the position corresponding to the guide rib D on the gear box cover 43 is extended with a pressing piece 431, on which the pressing piece 431 A via hole 432 for the guide rib D to pass through is provided.

The present invention also proposes an air conditioner. Referring to FIG. 8, the air conditioner includes a swing blade and a swing blade driving device. For the specific structure of the swing blade driving device, refer to the above-mentioned embodiments. Since this air conditioner adopts all the above-mentioned embodiments The technical solutions, therefore, also have all the beneficial effects brought by the technical solutions of the above embodiments, and will not be repeated here. Wherein, the connecting rod crank 10 of the swing blade driving device is connected with the connecting rod 70 of the swing blade 80 to drive the swing blade 80 to swing left and right.

It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, this technical solution should be considered The combination does not exist, nor is it within the scope of protection required by the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, are all The same reasoning is included in the patent protection scope of the present invention.

Claims (8)

1. A swing blade drive device, characterized in that it comprises a connecting rod crank, a sector gear and a drive assembly for driving the rotation of the sector gear, and one end of the connecting rod crank is provided with two The length direction of the rack is parallel to the rack, and the two racks are arranged at intervals; the sector gear is arranged between the two racks and meshes with one of the racks; when the drive assembly drives the sector gear to rotate When rotating in the same direction, the sector gear meshes alternately with the two racks periodically, driving the connecting rod crank to move back and forth periodically; The swing blade driving device also includes a mounting seat, and the driving assembly is arranged on the mounting seat; A limit block is fixed on one side of the sector gear, and a limit protrusion is arranged on the edge of the limit block; The first end of the needle is rotatably connected to the mounting base, and the rotation axis of the limiting pin is parallel to the axis of the sector gear; the mounting base is provided with a stop part located on one side of the limiting pin , the mounting seat is also provided with an elastic member that exerts an elastic force on the limit pin in the direction of the stop part, and the limit pin elastically abuts against the stop part; the stop protrusion The distance between the start and the axis of the sector gear is greater than the distance between the second end of the limit pin and the axis of the sector gear. 2 . The swing blade drive device according to claim 1 , wherein the diameter of the dedendum circle of the sector gear is equal to the distance between the tooth tops of the two racks. 3 . 3. The swing blade drive device according to claim 1, characterized in that, one end of the two racks not connected to the connecting rod crank is connected together via a connecting arm. 4. The swing blade driving device according to claim 1, characterized in that, the mounting seat is provided with a boss parallel to the axis of the sector gear, and the first end of the limit pin is provided with a The boss fits in the shaft hole, and the limit pin is sleeved on the boss through the shaft hole to be rotatably connected with the mounting base. 5. The swing blade driving device according to claim 4, characterized in that, the elastic member is a torsion spring sleeved on the boss and located between the limit pin and the mounting seat; the torsion spring One end is fixed with the limit pin, and the other end is fixed with the mounting base. 6. The swing blade driving device according to any one of claims 1 to 5, characterized in that, the driving assembly includes a driving gear, a driven gear meshing with the driving gear, and a driven gear fixed on the mounting seat The driving gear is sleeved on the rotating shaft of the motor, the driven gear is rotatably connected to the mounting seat, and the sector gear is coaxial with the driven gear and fixedly connected. 7. The swing blade driving device according to claim 6, characterized in that, the connecting rod crank is provided with a guide groove parallel to the rack, and the mounting seat is provided with a guide groove that is stuck in the guide groove. When the drive assembly drives the sector gear to rotate, the connecting rod crank periodically reciprocates in a direction parallel to the rack, and the guide groove slides relative to the guide rib. 8. An air conditioner comprising swing blades, further comprising the drive device for swing blades according to any one of claims 1-7.